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annotate org.eclipse.swt.gtk.linux.x86/src/org/eclipse/swt/custom/StyledText.d @ 120:536e43f63c81
Comprehensive update for Win32/Linux32 dmd-2.053/dmd-1.068+Tango-r5661
===D2===
* added [Try]Immutable/Const/Shared templates to work with differenses in D1/D2 instead of version statements
used these templates to work with strict type storage rules of dmd-2.053
* com.ibm.icu now also compilable with D2, but not tested yet
* small fixes
Snippet288 - shared data is in TLS
===Phobos===
* fixed critical bugs in Phobos implemention
completely incorrect segfault prone fromStringz (Linux's port ruthless killer)
terrible, incorrect StringBuffer realization (StyledText killer)
* fixed small bugs as well
Snippet72 - misprint in the snippet
* implemented missed functionality for Phobos
ByteArrayOutputStream implemented (image loading available)
formatting correctly works for all DWT's cases
As a result, folowing snippets now works with Phobos (Snippet### - what is fixed):
Snippet24, 42, 111, 115, 130, 235, 276 - bad string formatting
Snippet48, 282 - crash on image loading
Snippet163, 189, 211, 213, 217, 218, 222 - crash on copy/cut in StyledText
Snippet244 - hang-up
===Tango===
* few changes for the latest Tango trunc-r5661
* few small performance improvments
===General===
* implMissing-s for only one version changed to implMissingInTango/InPhobos
* incorrect calls to Format in toString-s fixed
* fixed loading \uXXXX characters in ResourceBundle
* added good UTF-8 support for StyledText, TextLayout (Win32) and friends
UTF functions revised and tested. It is now in java.nonstandard.*Utf modules
StyledText and TextLayout (Win32) modules revised for UTF-8 support
* removed small diferences in most identical files in *.swt.* folders
*.swt.internal.image, *.swt.events and *.swt.custom are identical in Win32/Linux32
now 179 of 576 (~31%) files in *.swt.* folders are fully identical
* Win32: snippets now have right subsystem, pretty icons and native system style controls
* small fixes in snippets
Snippet44 - it's not Snippet44
Snippet212 - functions work with different images and offsets arrays
Win32: Snippet282 - crash on close if the button has an image
Snippet293 - setGrayed is commented
and others
Win32: As a result, folowing snippets now works
Snippet68 - color doesn't change
Snippet163, 189, 211, 213, 217, 218, 222 - UTF-8 issues (see above)
Snippet193 - no tabel headers
| author | Denis Shelomovskij <verylonglogin.reg@gmail.com> |
|---|---|
| date | Sat, 09 Jul 2011 15:50:20 +0300 |
| parents | fb3aa8075988 |
| children |
| rev | line source |
|---|---|
| 25 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2008 IBM Corporation and others. | |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 * Port to the D programming language: | |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 12 *******************************************************************************/ | |
| 13 module org.eclipse.swt.custom.StyledText; | |
| 14 | |
| 15 | |
| 16 import org.eclipse.swt.SWT; | |
| 17 import org.eclipse.swt.SWTError; | |
| 18 import org.eclipse.swt.SWTException; | |
| 19 import org.eclipse.swt.accessibility.ACC; | |
| 20 import org.eclipse.swt.accessibility.Accessible; | |
| 21 import org.eclipse.swt.accessibility.AccessibleAdapter; | |
| 22 import org.eclipse.swt.accessibility.AccessibleControlAdapter; | |
| 23 import org.eclipse.swt.accessibility.AccessibleControlEvent; | |
| 24 import org.eclipse.swt.accessibility.AccessibleEvent; | |
| 25 import org.eclipse.swt.accessibility.AccessibleTextAdapter; | |
| 26 import org.eclipse.swt.accessibility.AccessibleTextEvent; | |
| 27 import org.eclipse.swt.dnd.Clipboard; | |
| 28 import org.eclipse.swt.dnd.DND; | |
| 29 import org.eclipse.swt.dnd.RTFTransfer; | |
| 30 import org.eclipse.swt.dnd.TextTransfer; | |
| 31 import org.eclipse.swt.dnd.Transfer; | |
| 32 import org.eclipse.swt.events.ModifyListener; | |
| 33 import org.eclipse.swt.events.SelectionEvent; | |
| 34 import org.eclipse.swt.events.SelectionListener; | |
| 35 import org.eclipse.swt.events.VerifyListener; | |
| 36 import org.eclipse.swt.graphics.Color; | |
| 37 import org.eclipse.swt.graphics.Cursor; | |
| 38 import org.eclipse.swt.graphics.Font; | |
| 39 import org.eclipse.swt.graphics.FontData; | |
| 40 import org.eclipse.swt.graphics.FontMetrics; | |
| 41 import org.eclipse.swt.graphics.GC; | |
| 42 import org.eclipse.swt.graphics.GlyphMetrics; | |
| 43 import org.eclipse.swt.graphics.Image; | |
| 44 import org.eclipse.swt.graphics.Device; | |
| 45 import org.eclipse.swt.graphics.Point; | |
| 46 import org.eclipse.swt.graphics.Rectangle; | |
| 47 import org.eclipse.swt.graphics.Resource; | |
| 48 import org.eclipse.swt.graphics.TextLayout; | |
| 49 import org.eclipse.swt.internal.BidiUtil; | |
| 50 import org.eclipse.swt.internal.Compatibility; | |
| 51 import org.eclipse.swt.printing.Printer; | |
| 52 import org.eclipse.swt.printing.PrinterData; | |
| 53 import org.eclipse.swt.widgets.Canvas; | |
| 54 import org.eclipse.swt.widgets.Caret; | |
| 55 import org.eclipse.swt.widgets.Composite; | |
| 56 import org.eclipse.swt.widgets.Control; | |
| 57 import org.eclipse.swt.widgets.Display; | |
| 58 import org.eclipse.swt.widgets.Event; | |
| 59 import org.eclipse.swt.widgets.IME; | |
| 60 import org.eclipse.swt.widgets.Label; | |
| 61 import org.eclipse.swt.widgets.Listener; | |
| 62 import org.eclipse.swt.widgets.ScrollBar; | |
| 63 import org.eclipse.swt.widgets.TypedListener; | |
| 64 import org.eclipse.swt.custom.StyledTextContent; | |
| 65 import org.eclipse.swt.custom.TextChangeListener; | |
| 66 import org.eclipse.swt.custom.StyledTextRenderer; | |
| 67 import org.eclipse.swt.custom.StyledTextPrintOptions; | |
| 68 import org.eclipse.swt.custom.ExtendedModifyListener; | |
| 69 import org.eclipse.swt.custom.BidiSegmentListener; | |
| 70 import org.eclipse.swt.custom.LineBackgroundListener; | |
| 71 import org.eclipse.swt.custom.LineStyleListener; | |
| 72 import org.eclipse.swt.custom.PaintObjectListener; | |
| 73 import org.eclipse.swt.custom.VerifyKeyListener; | |
| 74 import org.eclipse.swt.custom.MovementListener; | |
| 75 import org.eclipse.swt.custom.Bullet; | |
| 76 import org.eclipse.swt.custom.StyledTextEvent; | |
| 77 import org.eclipse.swt.custom.StyleRange; | |
| 78 import org.eclipse.swt.custom.TextChangedEvent; | |
| 79 import org.eclipse.swt.custom.TextChangingEvent; | |
| 80 import org.eclipse.swt.custom.DefaultContent; | |
| 81 import org.eclipse.swt.custom.StyledTextDropTargetEffect; | |
| 82 import org.eclipse.swt.custom.StyledTextListener; | |
| 83 import org.eclipse.swt.custom.ST; | |
| 84 | |
|
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85 import java.lang.all; |
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86 import java.nonstandard.UnsafeUtf; |
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87 |
| 48 | 88 version(Tango){ |
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89 static import tango.io.model.IFile; |
| 48 | 90 } else { // Phobos |
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91 static import std.string; |
| 48 | 92 } |
| 25 | 93 |
| 94 | |
| 95 /** | |
| 96 * A StyledText is an editable user interface object that displays lines | |
| 97 * of text. The following style attributes can be defined for the text: | |
| 98 * <ul> | |
| 99 * <li>foreground color | |
| 100 * <li>background color | |
| 101 * <li>font style (bold, italic, bold-italic, regular) | |
| 102 * <li>underline | |
| 103 * <li>strikeout | |
| 104 * </ul> | |
| 105 * <p> | |
| 106 * In addition to text style attributes, the background color of a line may | |
| 107 * be specified. | |
| 108 * </p><p> | |
| 109 * There are two ways to use this widget when specifying text style information. | |
| 110 * You may use the API that is defined for StyledText or you may define your own | |
| 111 * LineStyleListener. If you define your own listener, you will be responsible | |
| 112 * for maintaining the text style information for the widget. IMPORTANT: You may | |
| 113 * not define your own listener and use the StyledText API. The following | |
| 114 * StyledText API is not supported if you have defined a LineStyleListener: | |
| 115 * <ul> | |
| 116 * <li>getStyleRangeAtOffset(int) | |
| 117 * <li>getStyleRanges() | |
| 118 * <li>replaceStyleRanges(int,int,StyleRange[]) | |
| 119 * <li>setStyleRange(StyleRange) | |
| 120 * <li>setStyleRanges(StyleRange[]) | |
| 121 * </ul> | |
| 122 * </p><p> | |
| 123 * There are two ways to use this widget when specifying line background colors. | |
| 124 * You may use the API that is defined for StyledText or you may define your own | |
| 125 * LineBackgroundListener. If you define your own listener, you will be responsible | |
| 126 * for maintaining the line background color information for the widget. | |
| 127 * IMPORTANT: You may not define your own listener and use the StyledText API. | |
| 128 * The following StyledText API is not supported if you have defined a | |
| 129 * LineBackgroundListener: | |
| 130 * <ul> | |
| 131 * <li>getLineBackground(int) | |
| 132 * <li>setLineBackground(int,int,Color) | |
| 133 * </ul> | |
| 134 * </p><p> | |
| 135 * The content implementation for this widget may also be user-defined. To do so, | |
| 136 * you must implement the StyledTextContent interface and use the StyledText API | |
| 137 * setContent(StyledTextContent) to initialize the widget. | |
| 138 * </p><p> | |
| 139 * <dl> | |
| 140 * <dt><b>Styles:</b><dd>FULL_SELECTION, MULTI, READ_ONLY, SINGLE, WRAP | |
| 141 * <dt><b>Events:</b><dd>ExtendedModify, LineGetBackground, LineGetSegments, LineGetStyle, Modify, Selection, Verify, VerifyKey | |
| 142 * </dl> | |
| 143 * </p><p> | |
| 144 * IMPORTANT: This class is <em>not</em> intended to be subclassed. | |
| 145 * </p> | |
| 146 * | |
| 147 * @see <a href="http://www.eclipse.org/swt/snippets/#styledtext">StyledText snippets</a> | |
| 148 * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Examples: CustomControlExample, TextEditor</a> | |
| 149 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
| 150 */ | |
| 151 public class StyledText : Canvas { | |
| 152 alias Canvas.computeSize computeSize; | |
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153 package: |
| 25 | 154 |
| 155 static const char TAB = '\t'; | |
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156 version(Tango){ |
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157 static const String PlatformLineDelimiter = tango.io.model.IFile.FileConst.NewlineString; |
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158 } else { // Phobos |
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159 static const String PlatformLineDelimiter = std.string.newline; |
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160 } |
| 25 | 161 static const int BIDI_CARET_WIDTH = 3; |
| 162 static const int DEFAULT_WIDTH = 64; | |
| 163 static const int DEFAULT_HEIGHT = 64; | |
| 164 static const int V_SCROLL_RATE = 50; | |
| 165 static const int H_SCROLL_RATE = 10; | |
| 166 | |
| 167 static const int ExtendedModify = 3000; | |
| 168 static const int LineGetBackground = 3001; | |
| 169 static const int LineGetStyle = 3002; | |
| 170 static const int TextChanging = 3003; | |
| 171 static const int TextSet = 3004; | |
| 172 static const int VerifyKey = 3005; | |
| 173 static const int TextChanged = 3006; | |
| 174 static const int LineGetSegments = 3007; | |
| 175 static const int PaintObject = 3008; | |
| 176 static const int WordNext = 3009; | |
| 177 static const int WordPrevious = 3010; | |
| 178 | |
| 179 static const int PREVIOUS_OFFSET_TRAILING = 0; | |
| 180 static const int OFFSET_LEADING = 1; | |
| 181 | |
| 182 Color selectionBackground; // selection background color | |
| 183 Color selectionForeground; // selection foreground color | |
| 184 StyledTextContent content; // native content (default or user specified) | |
| 185 StyledTextRenderer renderer; | |
| 186 Listener listener; | |
| 187 TextChangeListener textChangeListener; // listener for TextChanging, TextChanged and TextSet events from StyledTextContent | |
| 188 int verticalScrollOffset = 0; // pixel based | |
| 189 int horizontalScrollOffset = 0; // pixel based | |
| 190 int topIndex = 0; // top visible line | |
| 191 int topIndexY; | |
| 192 int clientAreaHeight = 0; // the client area height. Needed to calculate content width for new visible lines during Resize callback | |
| 193 int clientAreaWidth = 0; // the client area width. Needed during Resize callback to determine if line wrap needs to be recalculated | |
| 194 int tabLength = 4; // number of characters in a tab | |
| 195 int leftMargin; | |
| 196 int topMargin; | |
| 197 int rightMargin; | |
| 198 int bottomMargin; | |
| 199 int columnX; // keep track of the horizontal caret position when changing lines/pages. Fixes bug 5935 | |
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200 int/*UTF8index*/ caretOffset = 0; |
| 25 | 201 int caretAlignment; |
| 202 Point selection; // x and y are start and end caret offsets of selection | |
| 203 Point clipboardSelection; // x and y are start and end caret offsets of previous selection | |
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204 bool selectedTextValid = true; // DWT: false if we just changed a text witch was selected |
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205 int/*UTF8index*/ selectionAnchor; // position of selection anchor. 0 based offset from beginning of text |
| 25 | 206 Point doubleClickSelection; // selection after last mouse double click |
| 207 bool editable = true; | |
| 208 bool wordWrap = false; | |
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209 bool doubleClickEnabled = true; // see getDoubleClickEnabled |
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210 bool overwrite = false; // insert/overwrite edit mode |
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211 int/*UTF8index*/ textLimit = -1; // limits the number of characters the user can type in the widget. Unlimited by default. |
| 25 | 212 int[int] keyActionMap; |
| 213 Color background = null; // workaround for bug 4791 | |
| 214 Color foreground = null; // | |
| 215 Clipboard clipboard; | |
| 216 int clickCount; | |
| 217 int autoScrollDirection = SWT.NULL; // the direction of autoscrolling (up, down, right, left) | |
| 218 int autoScrollDistance = 0; | |
| 219 int lastTextChangeStart; // cache data of the | |
| 220 int lastTextChangeNewLineCount; // last text changing | |
| 221 int lastTextChangeNewCharCount; // event for use in the | |
| 222 int lastTextChangeReplaceLineCount; // text changed handler | |
| 223 int lastTextChangeReplaceCharCount; | |
| 224 int lastLineBottom; // the bottom pixel of the last line been replaced | |
| 225 bool isMirrored_; | |
| 226 bool bidiColoring = false; // apply the BIDI algorithm on text segments of the same color | |
| 227 Image leftCaretBitmap = null; | |
| 228 Image rightCaretBitmap = null; | |
| 229 int caretDirection = SWT.NULL; | |
| 230 int caretWidth = 0; | |
| 231 Caret defaultCaret = null; | |
| 232 bool updateCaretDirection = true; | |
| 233 bool fixedLineHeight; | |
| 234 bool dragDetect_ = true; | |
| 235 IME ime; | |
| 236 | |
| 237 int alignment; | |
| 238 bool justify; | |
| 239 int indent; | |
| 240 int lineSpacing; | |
| 241 | |
| 242 const static bool IS_CARBON, IS_GTK, IS_MOTIF; | |
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243 mixin(sharedStaticThis!(`{ |
| 25 | 244 String platform = SWT.getPlatform(); |
| 245 IS_CARBON = ("carbon" == platform); | |
| 246 IS_GTK = ("gtk" == platform); | |
| 247 IS_MOTIF = ("motif" == platform); | |
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248 }`)); |
| 25 | 249 |
| 250 /** | |
| 251 * The Printing class : printing of a range of text. | |
| 252 * An instance of <code>Printing</code> is returned in the | |
| 253 * StyledText#print(Printer) API. The run() method may be | |
| 254 * invoked from any thread. | |
| 255 */ | |
| 256 static class Printing : Runnable { | |
| 257 const static int LEFT = 0; // left aligned header/footer segment | |
| 258 const static int CENTER = 1; // centered header/footer segment | |
| 259 const static int RIGHT = 2; // right aligned header/footer segment | |
| 260 | |
| 261 Printer printer; | |
| 262 StyledTextRenderer printerRenderer; | |
| 263 StyledTextPrintOptions printOptions; | |
| 264 Rectangle clientArea; | |
| 265 FontData fontData; | |
| 266 Font printerFont; | |
| 267 Resource[Resource] resources; | |
| 268 int tabLength; | |
| 269 GC gc; // printer GC | |
| 270 int pageWidth; // width of a printer page in pixels | |
| 271 int startPage; // first page to print | |
| 272 int endPage; // last page to print | |
| 273 int startLine; // first (wrapped) line to print | |
| 274 int endLine; // last (wrapped) line to print | |
| 275 bool singleLine; // widget single line mode | |
| 276 Point selection = null; // selected text | |
| 277 bool mirrored; // indicates the printing gc should be mirrored | |
| 278 int lineSpacing; | |
| 279 int printMargin; | |
| 280 | |
| 281 /** | |
| 282 * Creates an instance of <code>Printing</code>. | |
| 283 * Copies the widget content and rendering data that needs | |
| 284 * to be requested from listeners. | |
| 285 * </p> | |
| 286 * @param parent StyledText widget to print. | |
| 287 * @param printer printer device to print on. | |
| 288 * @param printOptions print options | |
| 289 */ | |
| 290 this(StyledText styledText, Printer printer, StyledTextPrintOptions printOptions) { | |
| 291 this.printer = printer; | |
| 292 this.printOptions = printOptions; | |
| 293 this.mirrored = (styledText.getStyle() & SWT.MIRRORED) !is 0; | |
| 294 singleLine = styledText.isSingleLine(); | |
| 295 startPage = 1; | |
| 296 endPage = int.max; | |
| 297 PrinterData data = printer.getPrinterData(); | |
| 298 if (data.scope_ is PrinterData.PAGE_RANGE) { | |
| 299 startPage = data.startPage; | |
| 300 endPage = data.endPage; | |
| 301 if (endPage < startPage) { | |
| 302 int temp = endPage; | |
| 303 endPage = startPage; | |
| 304 startPage = temp; | |
| 305 } | |
| 306 } else if (data.scope_ is PrinterData.SELECTION) { | |
| 307 selection = styledText.getSelectionRange(); | |
| 308 } | |
| 309 printerRenderer = new StyledTextRenderer(printer, null); | |
| 310 printerRenderer.setContent(copyContent(styledText.getContent())); | |
| 311 cacheLineData(styledText); | |
| 312 } | |
| 313 /** | |
| 314 * Caches all line data that needs to be requested from a listener. | |
| 315 * </p> | |
| 316 * @param printerContent <code>StyledTextContent</code> to request | |
| 317 * line data for. | |
| 318 */ | |
| 319 void cacheLineData(StyledText styledText) { | |
| 320 StyledTextRenderer renderer = styledText.renderer; | |
| 321 renderer.copyInto(printerRenderer); | |
| 322 fontData = styledText.getFont().getFontData()[0]; | |
| 323 tabLength = styledText.tabLength; | |
| 324 int lineCount = printerRenderer.lineCount; | |
| 325 if (styledText.isListening(LineGetBackground) || (styledText.isBidi() && styledText.isListening(LineGetSegments)) || styledText.isListening(LineGetStyle)) { | |
| 326 StyledTextContent content = printerRenderer.content; | |
| 327 for (int i = 0; i < lineCount; i++) { | |
| 328 String line = content.getLine(i); | |
| 329 int lineOffset = content.getOffsetAtLine(i); | |
| 330 StyledTextEvent event = styledText.getLineBackgroundData(lineOffset, line); | |
| 331 if (event !is null && event.lineBackground !is null) { | |
| 332 printerRenderer.setLineBackground(i, 1, event.lineBackground); | |
| 333 } | |
| 334 if (styledText.isBidi()) { | |
| 335 int[] segments = styledText.getBidiSegments(lineOffset, line); | |
| 336 printerRenderer.setLineSegments(i, 1, segments); | |
| 337 } | |
| 338 event = styledText.getLineStyleData(lineOffset, line); | |
| 339 if (event !is null) { | |
| 340 printerRenderer.setLineIndent(i, 1, event.indent); | |
| 341 printerRenderer.setLineAlignment(i, 1, event.alignment); | |
| 342 printerRenderer.setLineJustify(i, 1, event.justify); | |
| 343 printerRenderer.setLineBullet(i, 1, event.bullet); | |
| 344 StyleRange[] styles = event.styles; | |
| 345 if (styles !is null && styles.length > 0) { | |
| 346 printerRenderer.setStyleRanges(event.ranges, styles); | |
| 347 } | |
| 348 } | |
| 349 } | |
| 350 } | |
| 351 Point screenDPI = styledText.getDisplay().getDPI(); | |
| 352 Point printerDPI = printer.getDPI(); | |
| 353 resources = null; | |
| 354 for (int i = 0; i < lineCount; i++) { | |
| 355 Color color = printerRenderer.getLineBackground(i, null); | |
| 356 if (color !is null) { | |
| 357 if (printOptions.printLineBackground) { | |
| 358 Color printerColor; | |
| 359 if ( auto p = color in resources ) { | |
| 360 printerColor = cast(Color)*p; | |
| 361 } | |
| 362 else { | |
| 363 printerColor = new Color (printer, color.getRGB()); | |
| 364 resources[color]=printerColor; | |
| 365 } | |
| 366 printerRenderer.setLineBackground(i, 1, printerColor); | |
| 367 } else { | |
| 368 printerRenderer.setLineBackground(i, 1, null); | |
| 369 } | |
| 370 } | |
| 371 int indent = printerRenderer.getLineIndent(i, 0); | |
| 372 if (indent !is 0) { | |
| 373 printerRenderer.setLineIndent(i, 1, indent * printerDPI.x / screenDPI.x); | |
| 374 } | |
| 375 } | |
| 376 StyleRange[] styles = printerRenderer.styles; | |
| 377 for (int i = 0; i < printerRenderer.styleCount; i++) { | |
| 378 StyleRange style = styles[i]; | |
| 379 Font font = style.font; | |
| 380 if (style.font !is null) { | |
| 381 Font printerFont; | |
| 382 if ( auto p = font in resources ) { | |
| 383 printerFont = cast(Font)*p; | |
| 384 } | |
| 385 else { | |
| 386 printerFont = new Font (printer, font.getFontData()); | |
| 387 resources[font]= printerFont; | |
| 388 } | |
| 389 style.font = printerFont; | |
| 390 } | |
| 391 Color color = style.foreground; | |
| 392 if (color !is null) { | |
| 393 if (printOptions.printTextForeground) { | |
| 394 Color printerColor; | |
| 395 if ( auto p = color in resources ) { | |
| 396 printerColor = cast(Color)*p; | |
| 397 } | |
| 398 else { | |
| 399 printerColor = new Color (printer, color.getRGB()); | |
| 400 resources[color]=printerColor; | |
| 401 } | |
| 402 style.foreground = printerColor; | |
| 403 } else { | |
| 404 style.foreground = null; | |
| 405 } | |
| 406 } | |
| 407 color = style.background; | |
| 408 if (color !is null) { | |
| 409 if (printOptions.printTextBackground) { | |
| 410 Color printerColor; | |
| 411 if ( auto p = color in resources ) { | |
| 412 printerColor = cast(Color)*p; | |
| 413 } | |
| 414 else { | |
| 415 printerColor = new Color (printer, color.getRGB()); | |
| 416 resources[color]=printerColor; | |
| 417 } | |
| 418 style.background = printerColor; | |
| 419 } else { | |
| 420 style.background = null; | |
| 421 } | |
| 422 } | |
| 423 if (!printOptions.printTextFontStyle) { | |
| 424 style.fontStyle = SWT.NORMAL; | |
| 425 } | |
| 426 style.rise = style.rise * printerDPI.y / screenDPI.y; | |
| 427 GlyphMetrics metrics = style.metrics; | |
| 428 if (metrics !is null) { | |
| 429 metrics.ascent = metrics.ascent * printerDPI.y / screenDPI.y; | |
| 430 metrics.descent = metrics.descent * printerDPI.y / screenDPI.y; | |
| 431 metrics.width = metrics.width * printerDPI.x / screenDPI.x; | |
| 432 } | |
| 433 } | |
| 434 lineSpacing = styledText.lineSpacing * printerDPI.y / screenDPI.y; | |
| 435 if (printOptions.printLineNumbers) { | |
| 436 printMargin = 3 * printerDPI.x / screenDPI.x; | |
| 437 } | |
| 438 } | |
| 439 /** | |
| 440 * Copies the text of the specified <code>StyledTextContent</code>. | |
| 441 * </p> | |
| 442 * @param original the <code>StyledTextContent</code> to copy. | |
| 443 */ | |
| 444 StyledTextContent copyContent(StyledTextContent original) { | |
| 445 StyledTextContent printerContent = new DefaultContent(); | |
| 446 int insertOffset = 0; | |
| 447 for (int i = 0; i < original.getLineCount(); i++) { | |
| 448 int insertEndOffset; | |
| 449 if (i < original.getLineCount() - 1) { | |
| 450 insertEndOffset = original.getOffsetAtLine(i + 1); | |
| 451 } else { | |
| 452 insertEndOffset = original.getCharCount(); | |
| 453 } | |
| 454 printerContent.replaceTextRange(insertOffset, 0, original.getTextRange(insertOffset, insertEndOffset - insertOffset)); | |
| 455 insertOffset = insertEndOffset; | |
| 456 } | |
| 457 return printerContent; | |
| 458 } | |
| 459 /** | |
| 460 * Disposes of the resources and the <code>PrintRenderer</code>. | |
| 461 */ | |
| 462 void dispose() { | |
| 463 if (gc !is null) { | |
| 464 gc.dispose(); | |
| 465 gc = null; | |
| 466 } | |
| 467 foreach( resource; resources.values ){ | |
| 468 resource.dispose(); | |
| 469 } | |
| 470 resources = null; | |
| 471 if (printerFont !is null) { | |
| 472 printerFont.dispose(); | |
| 473 printerFont = null; | |
| 474 } | |
| 475 if (printerRenderer !is null) { | |
| 476 printerRenderer.dispose(); | |
| 477 printerRenderer = null; | |
| 478 } | |
| 479 } | |
| 480 void init_() { | |
| 481 Rectangle trim = printer.computeTrim(0, 0, 0, 0); | |
| 482 Point dpi = printer.getDPI(); | |
| 483 | |
| 484 printerFont = new Font( cast(Device)printer, fontData.getName(), fontData.getHeight(), SWT.NORMAL); | |
| 485 clientArea = printer.getClientArea(); | |
| 486 pageWidth = clientArea.width; | |
| 487 // one inch margin around text | |
| 488 clientArea.x = dpi.x + trim.x; | |
| 489 clientArea.y = dpi.y + trim.y; | |
| 490 clientArea.width -= (clientArea.x + trim.width); | |
| 491 clientArea.height -= (clientArea.y + trim.height); | |
| 492 | |
| 493 int style = mirrored ? SWT.RIGHT_TO_LEFT : SWT.LEFT_TO_RIGHT; | |
| 494 gc = new GC(printer, style); | |
| 495 gc.setFont(printerFont); | |
| 496 printerRenderer.setFont(printerFont, tabLength); | |
| 497 int lineHeight = printerRenderer.getLineHeight(); | |
| 498 if (printOptions.header !is null) { | |
| 499 clientArea.y += lineHeight * 2; | |
| 500 clientArea.height -= lineHeight * 2; | |
| 501 } | |
| 502 if (printOptions.footer !is null) { | |
| 503 clientArea.height -= lineHeight * 2; | |
| 504 } | |
| 505 | |
| 506 // TODO not wrapped | |
| 507 StyledTextContent content = printerRenderer.content; | |
| 508 startLine = 0; | |
| 509 endLine = singleLine ? 0 : content.getLineCount() - 1; | |
| 510 PrinterData data = printer.getPrinterData(); | |
| 511 if (data.scope_ is PrinterData.PAGE_RANGE) { | |
| 512 int pageSize = clientArea.height / lineHeight;//WRONG | |
| 513 startLine = (startPage - 1) * pageSize; | |
| 514 } else if (data.scope_ is PrinterData.SELECTION) { | |
| 515 startLine = content.getLineAtOffset(selection.x); | |
| 516 if (selection.y > 0) { | |
|
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parents:
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changeset
|
517 // DWT: index isn't a valid UTF-8 index |
| 25 | 518 endLine = content.getLineAtOffset(selection.x + selection.y - 1); |
| 519 } else { | |
| 520 endLine = startLine - 1; | |
| 521 } | |
| 522 } | |
| 523 } | |
| 524 /** | |
| 525 * Prints the lines in the specified page range. | |
| 526 */ | |
| 527 void print() { | |
| 528 Color background = gc.getBackground(); | |
| 529 Color foreground = gc.getForeground(); | |
| 530 int paintY = clientArea.y; | |
| 531 int paintX = clientArea.x; | |
| 532 int width = clientArea.width; | |
| 533 int page = startPage; | |
| 534 int pageBottom = clientArea.y + clientArea.height; | |
| 535 int orientation = gc.getStyle() & (SWT.RIGHT_TO_LEFT | SWT.LEFT_TO_RIGHT); | |
| 536 TextLayout printLayout = null; | |
| 537 if (printOptions.printLineNumbers || printOptions.header !is null || printOptions.footer !is null) { | |
| 538 printLayout = new TextLayout(printer); | |
| 539 printLayout.setFont(printerFont); | |
| 540 } | |
| 541 if (printOptions.printLineNumbers) { | |
| 542 int numberingWidth = 0; | |
| 543 int count = endLine - startLine + 1; | |
| 544 String[] lineLabels = printOptions.lineLabels; | |
| 545 if (lineLabels !is null) { | |
| 546 for (int i = startLine; i < Math.min(count, lineLabels.length); i++) { | |
| 547 if (lineLabels[i] !is null) { | |
| 548 printLayout.setText(lineLabels[i]); | |
| 549 int lineWidth = printLayout.getBounds().width; | |
| 550 numberingWidth = Math.max(numberingWidth, lineWidth); | |
| 551 } | |
| 552 } | |
| 553 } else { | |
| 554 StringBuffer buffer = new StringBuffer("0"); | |
| 555 while ((count /= 10) > 0) buffer.append("0"); | |
| 556 printLayout.setText(buffer.toString()); | |
| 557 numberingWidth = printLayout.getBounds().width; | |
| 558 } | |
| 559 numberingWidth += printMargin; | |
| 560 if (numberingWidth > width) numberingWidth = width; | |
| 561 paintX += numberingWidth; | |
| 562 width -= numberingWidth; | |
| 563 } | |
| 564 for (int i = startLine; i <= endLine && page <= endPage; i++) { | |
| 565 if (paintY is clientArea.y) { | |
| 566 printer.startPage(); | |
| 567 printDecoration(page, true, printLayout); | |
| 568 } | |
| 569 TextLayout layout = printerRenderer.getTextLayout(i, orientation, width, lineSpacing); | |
| 570 Color lineBackground = printerRenderer.getLineBackground(i, background); | |
| 571 int paragraphBottom = paintY + layout.getBounds().height; | |
| 572 if (paragraphBottom <= pageBottom) { | |
| 573 //normal case, the whole paragraph fits in the current page | |
| 574 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); | |
| 575 paintY = paragraphBottom; | |
| 576 } else { | |
| 577 int lineCount = layout.getLineCount(); | |
| 578 while (paragraphBottom > pageBottom && lineCount > 0) { | |
| 579 lineCount--; | |
| 580 paragraphBottom -= layout.getLineBounds(lineCount).height + layout.getSpacing(); | |
| 581 } | |
| 582 if (lineCount is 0) { | |
| 583 //the whole paragraph goes to the next page | |
| 584 printDecoration(page, false, printLayout); | |
| 585 printer.endPage(); | |
| 586 page++; | |
| 587 if (page <= endPage) { | |
| 588 printer.startPage(); | |
| 589 printDecoration(page, true, printLayout); | |
| 590 paintY = clientArea.y; | |
| 591 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); | |
| 592 paintY += layout.getBounds().height; | |
| 593 } | |
| 594 } else { | |
| 595 //draw paragraph top in the current page and paragraph bottom in the next | |
| 596 int height = paragraphBottom - paintY; | |
| 597 gc.setClipping(clientArea.x, paintY, clientArea.width, height); | |
| 598 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); | |
| 599 gc.setClipping(cast(Rectangle)null); | |
| 600 printDecoration(page, false, printLayout); | |
| 601 printer.endPage(); | |
| 602 page++; | |
| 603 if (page <= endPage) { | |
| 604 printer.startPage(); | |
| 605 printDecoration(page, true, printLayout); | |
| 606 paintY = clientArea.y - height; | |
| 607 int layoutHeight = layout.getBounds().height; | |
| 608 gc.setClipping(clientArea.x, clientArea.y, clientArea.width, layoutHeight - height); | |
| 609 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); | |
| 610 gc.setClipping(cast(Rectangle)null); | |
| 611 paintY += layoutHeight; | |
| 612 } | |
| 613 } | |
| 614 } | |
| 615 printerRenderer.disposeTextLayout(layout); | |
| 616 } | |
| 617 if (page <= endPage && paintY > clientArea.y) { | |
| 618 // close partial page | |
| 619 printDecoration(page, false, printLayout); | |
| 620 printer.endPage(); | |
| 621 } | |
| 622 if (printLayout !is null) printLayout.dispose(); | |
| 623 } | |
| 624 /** | |
| 625 * Print header or footer decorations. | |
| 626 * | |
| 627 * @param page page number to print, if specified in the StyledTextPrintOptions header or footer. | |
| 628 * @param header true = print the header, false = print the footer | |
| 629 */ | |
| 630 void printDecoration(int page, bool header, TextLayout layout) { | |
| 631 String text = header ? printOptions.header : printOptions.footer; | |
| 632 if (text is null) return; | |
| 633 int lastSegmentIndex = 0; | |
| 634 for (int i = 0; i < 3; i++) { | |
| 635 int segmentIndex = text.indexOf( StyledTextPrintOptions.SEPARATOR, lastSegmentIndex); | |
| 636 String segment; | |
| 637 if (segmentIndex is -1 ) { | |
| 638 segment = text.substring(lastSegmentIndex); | |
| 639 printDecorationSegment(segment, i, page, header, layout); | |
| 640 break; | |
| 641 } else { | |
| 642 segment = text.substring(lastSegmentIndex, segmentIndex); | |
| 643 printDecorationSegment(segment, i, page, header, layout); | |
| 644 lastSegmentIndex = segmentIndex + StyledTextPrintOptions.SEPARATOR.length; | |
| 645 } | |
| 646 } | |
| 647 } | |
| 648 /** | |
| 649 * Print one segment of a header or footer decoration. | |
| 650 * Headers and footers have three different segments. | |
| 651 * One each for left aligned, centered, and right aligned text. | |
| 652 * | |
| 653 * @param segment decoration segment to print | |
| 654 * @param alignment alignment of the segment. 0=left, 1=center, 2=right | |
| 655 * @param page page number to print, if specified in the decoration segment. | |
| 656 * @param header true = print the header, false = print the footer | |
| 657 */ | |
| 658 void printDecorationSegment(String segment, int alignment, int page, bool header, TextLayout layout) { | |
| 659 int pageIndex = segment.indexOf(StyledTextPrintOptions.PAGE_TAG); | |
| 660 if (pageIndex !is -1 ) { | |
| 661 int pageTagLength = StyledTextPrintOptions.PAGE_TAG.length; | |
| 662 StringBuffer buffer = new StringBuffer(segment.substring (0, pageIndex)); | |
| 663 buffer.append (page); | |
| 664 buffer.append (segment.substring(pageIndex + pageTagLength)); | |
| 51 | 665 segment = buffer.toString()._idup(); |
| 25 | 666 } |
| 667 if (segment.length > 0) { | |
| 668 layout.setText(segment); | |
| 669 int segmentWidth = layout.getBounds().width; | |
| 670 int segmentHeight = printerRenderer.getLineHeight(); | |
| 671 int drawX = 0, drawY; | |
| 672 if (alignment is LEFT) { | |
| 673 drawX = clientArea.x; | |
| 674 } else if (alignment is CENTER) { | |
| 675 drawX = (pageWidth - segmentWidth) / 2; | |
| 676 } else if (alignment is RIGHT) { | |
| 677 drawX = clientArea.x + clientArea.width - segmentWidth; | |
| 678 } | |
| 679 if (header) { | |
| 680 drawY = clientArea.y - segmentHeight * 2; | |
| 681 } else { | |
| 682 drawY = clientArea.y + clientArea.height + segmentHeight; | |
| 683 } | |
| 684 layout.draw(gc, drawX, drawY); | |
| 685 } | |
| 686 } | |
| 687 void printLine(int x, int y, GC gc, Color foreground, Color background, TextLayout layout, TextLayout printLayout, int index) { | |
| 688 if (background !is null) { | |
| 689 Rectangle rect = layout.getBounds(); | |
| 690 gc.setBackground(background); | |
| 691 gc.fillRectangle(x, y, rect.width, rect.height); | |
| 692 | |
| 693 // int lineCount = layout.getLineCount(); | |
| 694 // for (int i = 0; i < lineCount; i++) { | |
| 695 // Rectangle rect = layout.getLineBounds(i); | |
| 696 // rect.x += paintX; | |
| 697 // rect.y += paintY + layout.getSpacing(); | |
| 698 // rect.width = width;//layout bounds | |
| 699 // gc.fillRectangle(rect); | |
| 700 // } | |
| 701 } | |
| 702 if (printOptions.printLineNumbers) { | |
| 703 FontMetrics metrics = layout.getLineMetrics(0); | |
| 704 printLayout.setAscent(metrics.getAscent() + metrics.getLeading()); | |
| 705 printLayout.setDescent(metrics.getDescent()); | |
| 706 String[] lineLabels = printOptions.lineLabels; | |
| 707 if (lineLabels !is null) { | |
| 708 if (0 <= index && index < lineLabels.length && lineLabels[index] !is null) { | |
| 709 printLayout.setText(lineLabels[index]); | |
| 710 } else { | |
| 711 printLayout.setText(""); | |
| 712 } | |
| 713 } else { | |
|
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Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
113
diff
changeset
|
714 printLayout.setText(String_valueOf(index)); |
| 25 | 715 } |
| 716 int paintX = x - printMargin - printLayout.getBounds().width; | |
| 717 printLayout.draw(gc, paintX, y); | |
| 718 printLayout.setAscent(-1); | |
| 719 printLayout.setDescent(-1); | |
| 720 } | |
| 721 gc.setForeground(foreground); | |
| 722 layout.draw(gc, x, y); | |
| 723 } | |
| 724 /** | |
| 725 * Starts a print job and prints the pages specified in the constructor. | |
| 726 */ | |
| 727 public void run() { | |
| 728 String jobName = printOptions.jobName; | |
| 729 if (jobName is null) { | |
| 730 jobName = "Printing"; | |
| 731 } | |
| 732 if (printer.startJob(jobName)) { | |
| 733 init_(); | |
| 734 print(); | |
| 735 dispose(); | |
| 736 printer.endJob(); | |
| 737 } | |
| 738 } | |
| 739 } | |
| 740 /** | |
| 741 * The <code>RTFWriter</code> class is used to write widget content as | |
| 742 * rich text. The implementation complies with the RTF specification | |
| 743 * version 1.5. | |
| 744 * <p> | |
| 745 * toString() is guaranteed to return a valid RTF string only after | |
| 746 * close() has been called. | |
| 747 * </p><p> | |
| 748 * Whole and partial lines and line breaks can be written. Lines will be | |
| 749 * formatted using the styles queried from the LineStyleListener, if | |
| 750 * set, or those set directly in the widget. All styles are applied to | |
| 751 * the RTF stream like they are rendered by the widget. In addition, the | |
| 752 * widget font name and size is used for the whole text. | |
| 753 * </p> | |
| 754 */ | |
| 755 class RTFWriter : TextWriter { | |
| 756 | |
| 757 alias TextWriter.write write; | |
| 758 | |
| 759 static const int DEFAULT_FOREGROUND = 0; | |
| 760 static const int DEFAULT_BACKGROUND = 1; | |
| 761 Color[] colorTable; | |
| 762 Font[] fontTable; | |
| 763 bool WriteUnicode; | |
| 764 | |
| 765 /** | |
| 766 * Creates a RTF writer that writes content starting at offset "start" | |
| 767 * in the document. <code>start</code> and <code>length</code>can be set to specify partial | |
| 768 * lines. | |
| 769 * | |
| 770 * @param start start offset of content to write, 0 based from | |
| 771 * beginning of document | |
| 772 * @param length length of content to write | |
| 773 */ | |
| 774 public this(int start, int length) { | |
| 775 super(start, length); | |
| 776 colorTable ~= getForeground(); | |
| 777 colorTable ~= getBackground(); | |
| 778 fontTable ~= getFont(); | |
| 779 setUnicode(); | |
| 780 } | |
| 781 /** | |
| 782 * Closes the RTF writer. Once closed no more content can be written. | |
| 783 * <b>NOTE:</b> <code>toString()</code> does not return a valid RTF string until | |
| 784 * <code>close()</code> has been called. | |
| 785 */ | |
| 786 public override void close() { | |
| 787 if (!isClosed()) { | |
| 788 writeHeader(); | |
| 789 write("\n}}\0"); | |
| 790 super.close(); | |
| 791 } | |
| 792 } | |
| 793 /** | |
| 794 * Returns the index of the specified color in the RTF color table. | |
| 795 * | |
| 796 * @param color the color | |
| 797 * @param defaultIndex return value if color is null | |
| 798 * @return the index of the specified color in the RTF color table | |
| 799 * or "defaultIndex" if "color" is null. | |
| 800 */ | |
| 801 int getColorIndex(Color color, int defaultIndex) { | |
| 802 if (color is null) return defaultIndex; | |
| 803 int index = -1; | |
| 804 foreach( i, col; colorTable ){ | |
| 805 if( col == color ){ | |
| 806 index = i; | |
| 807 break; | |
| 808 } | |
| 809 } | |
| 810 if (index is -1) { | |
| 811 index = colorTable.length; | |
| 812 colorTable ~= color; | |
| 813 } | |
| 814 return index; | |
| 815 } | |
| 816 /** | |
| 817 * Returns the index of the specified color in the RTF color table. | |
| 818 * | |
| 819 * @param color the color | |
| 820 * @param defaultIndex return value if color is null | |
| 821 * @return the index of the specified color in the RTF color table | |
| 822 * or "defaultIndex" if "color" is null. | |
| 823 */ | |
| 824 int getFontIndex(Font font) { | |
| 825 int index = -1; | |
| 826 foreach( i, f; colorTable ){ | |
| 827 if( f == font ){ | |
| 828 index = i; | |
| 829 break; | |
| 830 } | |
| 831 } | |
| 832 if (index is -1) { | |
| 833 index = fontTable.length; | |
| 834 fontTable ~= font; | |
| 835 } | |
| 836 return index; | |
| 837 } | |
| 838 /** | |
| 839 * Determines if Unicode RTF should be written. | |
| 840 * Don't write Unicode RTF on Windows 95/98/ME or NT. | |
| 841 */ | |
|
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Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
113
diff
changeset
|
842 void setUnicode() {/*!!!*/ |
| 25 | 843 // const String Win95 = "windows 95"; |
| 844 // const String Win98 = "windows 98"; | |
| 845 // const String WinME = "windows me"; | |
| 846 // const String WinNT = "windows nt"; | |
| 847 // String osName = System.getProperty("os.name").toLowerCase(); | |
| 848 // String osVersion = System.getProperty("os.version"); | |
| 849 // int majorVersion = 0; | |
| 850 // | |
| 851 // if (osName.startsWith(WinNT) && osVersion !is null) { | |
| 852 // int majorIndex = osVersion.indexOf('.'); | |
| 853 // if (majorIndex !is -1) { | |
| 854 // osVersion = osVersion.substring(0, majorIndex); | |
| 855 // try { | |
| 856 // majorVersion = Integer.parseInt(osVersion); | |
| 857 // } catch (NumberFormatException exception) { | |
| 858 // // ignore exception. version number remains unknown. | |
| 859 // // will write without Unicode | |
| 860 // } | |
| 861 // } | |
| 862 // } | |
| 863 // WriteUnicode = !osName.startsWith(Win95) && | |
| 864 // !osName.startsWith(Win98) && | |
| 865 // !osName.startsWith(WinME) && | |
| 866 // (!osName.startsWith(WinNT) || majorVersion > 4); | |
| 867 WriteUnicode = true; // we are on linux-gtk | |
| 868 } | |
| 869 /** | |
| 870 * Appends the specified segment of "string" to the RTF data. | |
| 871 * Copy from <code>start</code> up to, but excluding, <code>end</code>. | |
| 872 * | |
| 873 * @param string string to copy a segment from. Must not contain | |
| 874 * line breaks. Line breaks should be written using writeLineDelimiter() | |
| 875 * @param start start offset of segment. 0 based. | |
| 876 * @param end end offset of segment | |
| 877 */ | |
| 878 void write(String string, int start, int end) { | |
|
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536e43f63c81
Comprehensive update for Win32/Linux32 dmd-2.053/dmd-1.068+Tango-r5661
Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
113
diff
changeset
|
879 int incr; |
|
536e43f63c81
Comprehensive update for Win32/Linux32 dmd-2.053/dmd-1.068+Tango-r5661
Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
113
diff
changeset
|
880 for (int index = start; index < end; index += incr) { |
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881 dchar ch = string.dcharAt(index, incr); |
| 25 | 882 if (ch > 0xFF && WriteUnicode) { |
| 883 // write the sub string from the last escaped character | |
| 884 // to the current one. Fixes bug 21698. | |
| 885 if (index > start) { | |
| 886 write( string[start .. index ] ); | |
| 887 } | |
| 888 write("\\u"); | |
|
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889 write( String_valueOf( cast(short)ch )); |
| 25 | 890 write(' '); // control word delimiter |
| 891 start = index + incr; | |
| 892 } else if (ch is '}' || ch is '{' || ch is '\\') { | |
| 893 // write the sub string from the last escaped character | |
| 894 // to the current one. Fixes bug 21698. | |
| 895 if (index > start) { | |
| 896 write(string[start .. index]); | |
| 897 } | |
| 898 write('\\'); | |
| 899 write(cast(char)ch); // ok because one of {}\ | |
|
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parents:
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900 assert(incr == 1); |
| 25 | 901 start = index + 1; |
| 902 } | |
| 903 } | |
| 904 // write from the last escaped character to the end. | |
| 905 // Fixes bug 21698. | |
| 906 if (start < end) { | |
| 907 write(string[ start .. end]); | |
| 908 } | |
| 909 } | |
| 910 /** | |
| 911 * Writes the RTF header including font table and color table. | |
| 912 */ | |
| 913 void writeHeader() { | |
| 914 StringBuffer header = new StringBuffer(); | |
| 915 FontData fontData = getFont().getFontData()[0]; | |
| 916 header.append("{\\rtf1\\ansi"); | |
| 917 // specify code page, necessary for copy to work in bidi | |
| 918 // systems that don't support Unicode RTF. | |
| 919 // PORTING_TODO: String cpg = System.getProperty("file.encoding").toLowerCase(); | |
|
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parents:
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920 //String cpg = "UTF16"; |
| 25 | 921 /+ |
| 922 if (cpg.startsWith("cp") || cpg.startsWith("ms")) { | |
| 923 cpg = cpg.substring(2, cpg.length()); | |
| 924 header.append("\\ansicpg"); | |
| 925 header.append(cpg); | |
| 926 } | |
| 927 +/ | |
| 928 header.append("\\uc0\\deff0{\\fonttbl{\\f0\\fnil "); | |
| 929 header.append(fontData.getName()); | |
| 930 header.append(";"); | |
| 931 for (int i = 1; i < fontTable.length; i++) { | |
| 932 header.append("\\f"); | |
| 933 header.append(i); | |
| 934 header.append(" "); | |
| 935 FontData fd = (cast(Font)fontTable[i]).getFontData()[0]; | |
| 936 header.append(fd.getName()); | |
| 937 header.append(";"); | |
| 938 } | |
| 939 header.append("}}\n{\\colortbl"); | |
| 940 for (int i = 0; i < colorTable.length; i++) { | |
| 941 Color color = cast(Color) colorTable[i]; | |
| 942 header.append("\\red"); | |
| 943 header.append(color.getRed()); | |
| 944 header.append("\\green"); | |
| 945 header.append(color.getGreen()); | |
| 946 header.append("\\blue"); | |
| 947 header.append(color.getBlue()); | |
| 948 header.append(";"); | |
| 949 } | |
| 950 // some RTF readers ignore the deff0 font tag. Explicitly | |
| 951 // set the font for the whole document to work around this. | |
| 952 header.append("}\n{\\f0\\fs"); | |
| 953 // font size is specified in half points | |
| 954 header.append(fontData.getHeight() * 2); | |
| 955 header.append(" "); | |
| 956 write(header.toString(), 0); | |
| 957 } | |
| 958 /** | |
| 959 * Appends the specified line text to the RTF data. Lines will be formatted | |
| 960 * using the styles queried from the LineStyleListener, if set, or those set | |
| 961 * directly in the widget. | |
| 962 * | |
| 963 * @param line line text to write as RTF. Must not contain line breaks | |
| 964 * Line breaks should be written using writeLineDelimiter() | |
| 965 * @param lineOffset offset of the line. 0 based from the start of the | |
| 966 * widget document. Any text occurring before the start offset or after the | |
| 967 * end offset specified during object creation is ignored. | |
| 968 * @exception SWTException <ul> | |
| 969 * <li>ERROR_IO when the writer is closed.</li> | |
| 970 * </ul> | |
| 971 */ | |
| 972 public override void writeLine(String line, int lineOffset) { | |
| 973 if (isClosed()) { | |
| 974 SWT.error(SWT.ERROR_IO); | |
| 975 } | |
| 976 int lineIndex = content.getLineAtOffset(lineOffset); | |
| 977 int lineAlignment, lineIndent; | |
| 978 bool lineJustify; | |
| 979 int[] ranges; | |
| 980 StyleRange[] styles; | |
| 981 StyledTextEvent event = getLineStyleData(lineOffset, line); | |
| 982 if (event !is null) { | |
| 983 lineAlignment = event.alignment; | |
| 984 lineIndent = event.indent; | |
| 985 lineJustify = event.justify; | |
| 986 ranges = event.ranges; | |
| 987 styles = event.styles; | |
| 988 } else { | |
| 989 lineAlignment = renderer.getLineAlignment(lineIndex, alignment); | |
| 990 lineIndent = renderer.getLineIndent(lineIndex, indent); | |
| 991 lineJustify = renderer.getLineJustify(lineIndex, justify); | |
| 992 ranges = renderer.getRanges(lineOffset, line.length); | |
| 993 styles = renderer.getStyleRanges(lineOffset, line.length, false); | |
| 994 } | |
| 995 if (styles is null) styles = new StyleRange[0]; | |
| 996 Color lineBackground = renderer.getLineBackground(lineIndex, null); | |
| 997 event = getLineBackgroundData(lineOffset, line); | |
| 998 if (event !is null && event.lineBackground !is null) lineBackground = event.lineBackground; | |
| 999 writeStyledLine(line, lineOffset, ranges, styles, lineBackground, lineIndent, lineAlignment, lineJustify); | |
| 1000 } | |
| 1001 /** | |
| 1002 * Appends the specified line delimiter to the RTF data. | |
| 1003 * | |
| 1004 * @param lineDelimiter line delimiter to write as RTF. | |
| 1005 * @exception SWTException <ul> | |
| 1006 * <li>ERROR_IO when the writer is closed.</li> | |
| 1007 * </ul> | |
| 1008 */ | |
| 1009 public override void writeLineDelimiter(String lineDelimiter) { | |
| 1010 if (isClosed()) { | |
| 1011 SWT.error(SWT.ERROR_IO); | |
| 1012 } | |
| 1013 write(lineDelimiter, 0, lineDelimiter.length); | |
| 1014 write("\\par "); | |
| 1015 } | |
| 1016 /** | |
| 1017 * Appends the specified line text to the RTF data. | |
| 1018 * <p> | |
| 1019 * Use the colors and font styles specified in "styles" and "lineBackground". | |
| 1020 * Formatting is written to reflect the text rendering by the text widget. | |
| 1021 * Style background colors take precedence over the line background color. | |
| 1022 * Background colors are written using the \highlight tag (vs. the \cb tag). | |
| 1023 * </p> | |
| 1024 * | |
| 1025 * @param line line text to write as RTF. Must not contain line breaks | |
| 1026 * Line breaks should be written using writeLineDelimiter() | |
| 1027 * @param lineOffset offset of the line. 0 based from the start of the | |
| 1028 * widget document. Any text occurring before the start offset or after the | |
| 1029 * end offset specified during object creation is ignored. | |
| 1030 * @param styles styles to use for formatting. Must not be null. | |
| 1031 * @param lineBackground line background color to use for formatting. | |
| 1032 * May be null. | |
| 1033 */ | |
| 1034 void writeStyledLine(String line, int lineOffset, int ranges[], StyleRange[] styles, Color lineBackground, int indent, int alignment, bool justify) { | |
| 1035 int lineLength = line.length; | |
| 1036 int startOffset = getStart(); | |
| 1037 int writeOffset = startOffset - lineOffset; | |
| 1038 if (writeOffset >= lineLength) return; | |
| 1039 int lineIndex = Math.max(0, writeOffset); | |
| 1040 | |
| 1041 write("\\fi"); | |
| 1042 write(indent); | |
| 1043 switch (alignment) { | |
| 1044 case SWT.LEFT: write("\\ql"); break; | |
| 1045 case SWT.CENTER: write("\\qc"); break; | |
| 1046 case SWT.RIGHT: write("\\qr"); break; | |
| 1047 default: | |
| 1048 } | |
| 1049 if (justify) write("\\qj"); | |
| 1050 write(" "); | |
| 1051 | |
| 1052 if (lineBackground !is null) { | |
| 1053 write("{\\highlight"); | |
| 1054 write(getColorIndex(lineBackground, DEFAULT_BACKGROUND)); | |
| 1055 write(" "); | |
| 1056 } | |
| 1057 int endOffset = startOffset + super.getCharCount(); | |
| 1058 int lineEndOffset = Math.min(lineLength, endOffset - lineOffset); | |
| 1059 for (int i = 0; i < styles.length; i++) { | |
| 1060 StyleRange style = styles[i]; | |
| 1061 int start, end; | |
| 1062 if (ranges !is null) { | |
| 1063 start = ranges[i << 1] - lineOffset; | |
| 1064 end = start + ranges[(i << 1) + 1]; | |
| 1065 } else { | |
| 1066 start = style.start - lineOffset; | |
| 1067 end = start + style.length; | |
| 1068 } | |
| 1069 // skip over partial first line | |
| 1070 if (end < writeOffset) { | |
| 1071 continue; | |
| 1072 } | |
| 1073 // style starts beyond line end or RTF write end | |
| 1074 if (start >= lineEndOffset) { | |
| 1075 break; | |
| 1076 } | |
| 1077 // write any unstyled text | |
| 1078 if (lineIndex < start) { | |
| 1079 // copy to start of style | |
| 1080 // style starting beyond end of write range or end of line | |
| 1081 // is guarded against above. | |
| 1082 write(line, lineIndex, start); | |
| 1083 lineIndex = start; | |
| 1084 } | |
| 1085 // write styled text | |
| 1086 write("{\\cf"); | |
| 1087 write(getColorIndex(style.foreground, DEFAULT_FOREGROUND)); | |
| 1088 int colorIndex = getColorIndex(style.background, DEFAULT_BACKGROUND); | |
| 1089 if (colorIndex !is DEFAULT_BACKGROUND) { | |
| 1090 write("\\highlight"); | |
| 1091 write(colorIndex); | |
| 1092 } | |
| 1093 Font font = style.font; | |
| 1094 if (font !is null) { | |
| 1095 int fontIndex = getFontIndex(font); | |
| 1096 write("\\f"); | |
| 1097 write(fontIndex); | |
| 1098 FontData fontData = font.getFontData()[0]; | |
| 1099 write("\\fs"); | |
| 1100 write(fontData.getHeight() * 2); | |
| 1101 } else { | |
| 1102 if ((style.fontStyle & SWT.BOLD) !is 0) { | |
| 1103 write("\\b"); | |
| 1104 } | |
| 1105 if ((style.fontStyle & SWT.ITALIC) !is 0) { | |
| 1106 write("\\i"); | |
| 1107 } | |
| 1108 } | |
| 1109 if (style.underline) { | |
| 1110 write("\\ul"); | |
| 1111 } | |
| 1112 if (style.strikeout) { | |
| 1113 write("\\strike"); | |
| 1114 } | |
| 1115 write(" "); | |
| 1116 // copy to end of style or end of write range or end of line | |
| 1117 int copyEnd = Math.min(end, lineEndOffset); | |
| 1118 // guard against invalid styles and let style processing continue | |
| 1119 copyEnd = Math.max(copyEnd, lineIndex); | |
| 1120 write(line, lineIndex, copyEnd); | |
| 1121 if (font is null) { | |
| 1122 if ((style.fontStyle & SWT.BOLD) !is 0) { | |
| 1123 write("\\b0"); | |
| 1124 } | |
| 1125 if ((style.fontStyle & SWT.ITALIC) !is 0) { | |
| 1126 write("\\i0"); | |
| 1127 } | |
| 1128 } | |
| 1129 if (style.underline) { | |
| 1130 write("\\ul0"); | |
| 1131 } | |
| 1132 if (style.strikeout) { | |
| 1133 write("\\strike0"); | |
| 1134 } | |
| 1135 write("}"); | |
| 1136 lineIndex = copyEnd; | |
| 1137 } | |
| 1138 // write unstyled text at the end of the line | |
| 1139 if (lineIndex < lineEndOffset) { | |
| 1140 write(line, lineIndex, lineEndOffset); | |
| 1141 } | |
| 1142 if (lineBackground !is null) write("}"); | |
| 1143 } | |
| 1144 } | |
| 1145 /** | |
| 1146 * The <code>TextWriter</code> class is used to write widget content to | |
| 1147 * a string. Whole and partial lines and line breaks can be written. To write | |
| 1148 * partial lines, specify the start and length of the desired segment | |
| 1149 * during object creation. | |
| 1150 * <p> | |
| 1151 * </b>NOTE:</b> <code>toString()</code> is guaranteed to return a valid string only after close() | |
| 1152 * has been called. | |
| 1153 * </p> | |
| 1154 */ | |
| 1155 class TextWriter { | |
| 1156 private StringBuffer buffer; | |
| 1157 private int startOffset; // offset of first character that will be written | |
| 1158 private int endOffset; // offset of last character that will be written. | |
| 1159 // 0 based from the beginning of the widget text. | |
| 1160 private bool isClosed_ = false; | |
| 1161 | |
| 1162 /** | |
| 1163 * Creates a writer that writes content starting at offset "start" | |
| 1164 * in the document. <code>start</code> and <code>length</code> can be set to specify partial lines. | |
| 1165 * | |
| 1166 * @param start start offset of content to write, 0 based from beginning of document | |
| 1167 * @param length length of content to write | |
| 1168 */ | |
| 1169 public this(int start, int length) { | |
| 1170 buffer = new StringBuffer(length); | |
| 1171 startOffset = start; | |
| 1172 endOffset = start + length; | |
| 1173 } | |
| 1174 /** | |
| 1175 * Closes the writer. Once closed no more content can be written. | |
| 1176 * <b>NOTE:</b> <code>toString()</code> is not guaranteed to return a valid string unless | |
| 1177 * the writer is closed. | |
| 1178 */ | |
| 1179 public void close() { | |
| 1180 if (!isClosed_) { | |
| 1181 isClosed_ = true; | |
| 1182 } | |
| 1183 } | |
| 1184 /** | |
| 1185 * Returns the number of characters to write. | |
| 1186 * @return the integer number of characters to write | |
| 1187 */ | |
| 1188 public int getCharCount() { | |
| 1189 return endOffset - startOffset; | |
| 1190 } | |
| 1191 /** | |
| 1192 * Returns the offset where writing starts. 0 based from the start of | |
| 1193 * the widget text. Used to write partial lines. | |
| 1194 * @return the integer offset where writing starts | |
| 1195 */ | |
| 1196 public int getStart() { | |
| 1197 return startOffset; | |
| 1198 } | |
| 1199 /** | |
| 1200 * Returns whether the writer is closed. | |
| 1201 * @return a bool specifying whether or not the writer is closed | |
| 1202 */ | |
| 1203 public bool isClosed() { | |
| 1204 return isClosed_; | |
| 1205 } | |
| 1206 /** | |
| 1207 * Returns the string. <code>close()</code> must be called before <code>toString()</code> | |
| 1208 * is guaranteed to return a valid string. | |
| 1209 * | |
| 1210 * @return the string | |
| 1211 */ | |
| 1212 public override String toString() { | |
| 1213 return buffer.toString(); | |
| 1214 } | |
| 1215 /** | |
| 1216 * Appends the given string to the data. | |
| 1217 */ | |
| 1218 void write(String string) { | |
| 1219 buffer.append(string); | |
| 1220 } | |
| 1221 /** | |
| 1222 * Inserts the given string to the data at the specified offset. | |
| 1223 * <p> | |
| 1224 * Do nothing if "offset" is < 0 or > getCharCount() | |
| 1225 * </p> | |
| 1226 * | |
| 1227 * @param string text to insert | |
| 1228 * @param offset offset in the existing data to insert "string" at. | |
| 1229 */ | |
| 1230 void write(String string, int offset) { | |
| 1231 if (offset < 0 || offset > buffer.length()) { | |
| 1232 return; | |
| 1233 } | |
| 1234 buffer.insert( offset, string ); | |
| 1235 } | |
| 1236 /** | |
| 1237 * Appends the given int to the data. | |
| 1238 */ | |
| 1239 void write(int i) { | |
| 1240 buffer.append(i); | |
| 1241 } | |
| 1242 /** | |
| 1243 * Appends the given character to the data. | |
| 1244 */ | |
| 1245 void write(char i) { | |
| 1246 buffer.append(i); | |
| 1247 } | |
| 1248 /** | |
| 1249 * Appends the specified line text to the data. | |
| 1250 * | |
| 1251 * @param line line text to write. Must not contain line breaks | |
| 1252 * Line breaks should be written using writeLineDelimiter() | |
| 1253 * @param lineOffset offset of the line. 0 based from the start of the | |
| 1254 * widget document. Any text occurring before the start offset or after the | |
| 1255 * end offset specified during object creation is ignored. | |
| 1256 * @exception SWTException <ul> | |
| 1257 * <li>ERROR_IO when the writer is closed.</li> | |
| 1258 * </ul> | |
| 1259 */ | |
| 1260 public void writeLine(String line, int lineOffset) { | |
| 1261 if (isClosed_) { | |
| 1262 SWT.error(SWT.ERROR_IO); | |
| 1263 } | |
| 1264 int writeOffset = startOffset - lineOffset; | |
| 1265 int lineLength = line.length; | |
| 1266 int lineIndex; | |
| 1267 if (writeOffset >= lineLength) { | |
| 1268 return; // whole line is outside write range | |
| 1269 } else if (writeOffset > 0) { | |
| 1270 lineIndex = writeOffset; // line starts before write start | |
| 1271 } else { | |
| 1272 lineIndex = 0; | |
| 1273 } | |
| 1274 int copyEnd = Math.min(lineLength, endOffset - lineOffset); | |
| 1275 if (lineIndex < copyEnd) { | |
| 1276 write(line.substring(lineIndex, copyEnd)); | |
| 1277 } | |
| 1278 } | |
| 1279 /** | |
| 1280 * Appends the specified line delimiter to the data. | |
| 1281 * | |
| 1282 * @param lineDelimiter line delimiter to write | |
| 1283 * @exception SWTException <ul> | |
| 1284 * <li>ERROR_IO when the writer is closed.</li> | |
| 1285 * </ul> | |
| 1286 */ | |
| 1287 public void writeLineDelimiter(String lineDelimiter) { | |
| 1288 if (isClosed_) { | |
| 1289 SWT.error(SWT.ERROR_IO); | |
| 1290 } | |
| 1291 write(lineDelimiter); | |
| 1292 } | |
| 1293 } | |
| 1294 | |
| 1295 /** | |
| 1296 * Constructs a new instance of this class given its parent | |
| 1297 * and a style value describing its behavior and appearance. | |
| 1298 * <p> | |
| 1299 * The style value is either one of the style constants defined in | |
| 1300 * class <code>SWT</code> which is applicable to instances of this | |
| 1301 * class, or must be built by <em>bitwise OR</em>'ing together | |
| 1302 * (that is, using the <code>int</code> "|" operator) two or more | |
| 1303 * of those <code>SWT</code> style constants. The class description | |
| 1304 * lists the style constants that are applicable to the class. | |
| 1305 * Style bits are also inherited from superclasses. | |
| 1306 * </p> | |
| 1307 * | |
| 1308 * @param parent a widget which will be the parent of the new instance (cannot be null) | |
| 1309 * @param style the style of widget to construct | |
| 1310 * | |
| 1311 * @exception IllegalArgumentException <ul> | |
| 1312 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> | |
| 1313 * </ul> | |
| 1314 * @exception SWTException <ul> | |
| 1315 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> | |
| 1316 * </ul> | |
| 1317 * | |
| 1318 * @see SWT#FULL_SELECTION | |
| 1319 * @see SWT#MULTI | |
| 1320 * @see SWT#READ_ONLY | |
| 1321 * @see SWT#SINGLE | |
| 1322 * @see SWT#WRAP | |
| 1323 * @see #getStyle | |
| 1324 */ | |
| 1325 public this(Composite parent, int style) { | |
| 1326 selection = new Point(0, 0); | |
| 1327 super(parent, checkStyle(style)); | |
| 1328 // set the fg in the OS to ensure that these are the same as StyledText, necessary | |
| 1329 // for ensuring that the bg/fg the IME box uses is the same as what StyledText uses | |
| 1330 super.setForeground(getForeground()); | |
| 1331 super.setDragDetect(false); | |
| 1332 Display display = getDisplay(); | |
| 1333 isMirrored_ = (super.getStyle() & SWT.MIRRORED) !is 0; | |
| 1334 fixedLineHeight = true; | |
| 1335 if ((style & SWT.READ_ONLY) !is 0) { | |
| 1336 setEditable(false); | |
| 1337 } | |
| 1338 leftMargin = rightMargin = isBidiCaret() ? BIDI_CARET_WIDTH - 1: 0; | |
| 1339 if ((style & SWT.SINGLE) !is 0 && (style & SWT.BORDER) !is 0) { | |
| 1340 leftMargin = topMargin = rightMargin = bottomMargin = 2; | |
| 1341 } | |
| 1342 alignment = style & (SWT.LEFT | SWT.RIGHT | SWT.CENTER); | |
| 1343 if (alignment is 0) alignment = SWT.LEFT; | |
| 1344 clipboard = new Clipboard(display); | |
| 1345 installDefaultContent(); | |
| 1346 renderer = new StyledTextRenderer(getDisplay(), this); | |
| 1347 renderer.setContent(content); | |
| 1348 renderer.setFont(getFont(), tabLength); | |
| 1349 ime = new IME(this, SWT.NONE); | |
| 1350 defaultCaret = new Caret(this, SWT.NONE); | |
| 1351 if ((style & SWT.WRAP) !is 0) { | |
| 1352 setWordWrap(true); | |
| 1353 } | |
| 1354 if (isBidiCaret()) { | |
| 1355 createCaretBitmaps(); | |
| 1356 Runnable runnable = new class() Runnable { | |
| 1357 public void run() { | |
| 1358 int direction = BidiUtil.getKeyboardLanguage() is BidiUtil.KEYBOARD_BIDI ? SWT.RIGHT : SWT.LEFT; | |
| 1359 if (direction is caretDirection) return; | |
| 1360 if (getCaret() !is defaultCaret) return; | |
| 1361 Point newCaretPos = getPointAtOffset(caretOffset); | |
| 1362 setCaretLocation(newCaretPos, direction); | |
| 1363 } | |
| 1364 }; | |
| 1365 BidiUtil.addLanguageListener(this, runnable); | |
| 1366 } | |
| 1367 setCaret(defaultCaret); | |
| 1368 calculateScrollBars(); | |
| 1369 createKeyBindings(); | |
| 1370 setCursor(display.getSystemCursor(SWT.CURSOR_IBEAM)); | |
| 1371 installListeners(); | |
| 1372 initializeAccessible(); | |
| 1373 setData("DEFAULT_DROP_TARGET_EFFECT", new StyledTextDropTargetEffect(this)); | |
| 1374 } | |
| 1375 /** | |
| 1376 * Adds an extended modify listener. An ExtendedModify event is sent by the | |
| 1377 * widget when the widget text has changed. | |
| 1378 * | |
| 1379 * @param extendedModifyListener the listener | |
| 1380 * @exception SWTException <ul> | |
| 1381 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1382 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1383 * </ul> | |
| 1384 * @exception IllegalArgumentException <ul> | |
| 1385 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1386 * </ul> | |
| 1387 */ | |
| 1388 public void addExtendedModifyListener(ExtendedModifyListener extendedModifyListener) { | |
| 1389 checkWidget(); | |
| 1390 if (extendedModifyListener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1391 StyledTextListener typedListener = new StyledTextListener(extendedModifyListener); | |
| 1392 addListener(ExtendedModify, typedListener); | |
| 1393 } | |
| 1394 /** | |
| 1395 * Adds a bidirectional segment listener. | |
| 1396 * <p> | |
| 1397 * A BidiSegmentEvent is sent | |
| 1398 * whenever a line of text is measured or rendered. The user can | |
| 1399 * specify text ranges in the line that should be treated as if they | |
| 1400 * had a different direction than the surrounding text. | |
| 1401 * This may be used when adjacent segments of right-to-left text should | |
| 1402 * not be reordered relative to each other. | |
| 1403 * E.g., Multiple Java string literals in a right-to-left language | |
| 1404 * should generally remain in logical order to each other, that is, the | |
| 1405 * way they are stored. | |
| 1406 * </p> | |
| 1407 * | |
| 1408 * @param listener the listener | |
| 1409 * @exception SWTException <ul> | |
| 1410 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1411 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1412 * </ul> | |
| 1413 * @exception IllegalArgumentException <ul> | |
| 1414 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1415 * </ul> | |
| 1416 * @see BidiSegmentEvent | |
| 1417 * @since 2.0 | |
| 1418 */ | |
| 1419 public void addBidiSegmentListener(BidiSegmentListener listener) { | |
| 1420 checkWidget(); | |
| 1421 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1422 addListener(LineGetSegments, new StyledTextListener(listener)); | |
| 1423 } | |
| 1424 /** | |
| 1425 * Adds a line background listener. A LineGetBackground event is sent by the | |
| 1426 * widget to determine the background color for a line. | |
| 1427 * | |
| 1428 * @param listener the listener | |
| 1429 * @exception SWTException <ul> | |
| 1430 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1431 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1432 * </ul> | |
| 1433 * @exception IllegalArgumentException <ul> | |
| 1434 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1435 * </ul> | |
| 1436 */ | |
| 1437 public void addLineBackgroundListener(LineBackgroundListener listener) { | |
| 1438 checkWidget(); | |
| 1439 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1440 if (!isListening(LineGetBackground)) { | |
| 1441 renderer.clearLineBackground(0, content.getLineCount()); | |
| 1442 } | |
| 1443 addListener(LineGetBackground, new StyledTextListener(listener)); | |
| 1444 } | |
| 1445 /** | |
| 1446 * Adds a line style listener. A LineGetStyle event is sent by the widget to | |
| 1447 * determine the styles for a line. | |
| 1448 * | |
| 1449 * @param listener the listener | |
| 1450 * @exception SWTException <ul> | |
| 1451 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1452 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1453 * </ul> | |
| 1454 * @exception IllegalArgumentException <ul> | |
| 1455 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1456 * </ul> | |
| 1457 */ | |
| 1458 public void addLineStyleListener(LineStyleListener listener) { | |
| 1459 checkWidget(); | |
| 1460 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1461 if (!isListening(LineGetStyle)) { | |
| 1462 setStyleRanges(0, 0, null, null, true); | |
| 1463 renderer.clearLineStyle(0, content.getLineCount()); | |
| 1464 } | |
| 1465 addListener(LineGetStyle, new StyledTextListener(listener)); | |
| 1466 } | |
| 1467 /** | |
| 1468 * Adds a modify listener. A Modify event is sent by the widget when the widget text | |
| 1469 * has changed. | |
| 1470 * | |
| 1471 * @param modifyListener the listener | |
| 1472 * @exception SWTException <ul> | |
| 1473 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1474 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1475 * </ul> | |
| 1476 * @exception IllegalArgumentException <ul> | |
| 1477 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1478 * </ul> | |
| 1479 */ | |
| 1480 public void addModifyListener(ModifyListener modifyListener) { | |
| 1481 checkWidget(); | |
| 1482 if (modifyListener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1483 addListener(SWT.Modify, new TypedListener(modifyListener)); | |
| 1484 } | |
| 1485 /** | |
| 1486 * Adds a paint object listener. A paint object event is sent by the widget when an object | |
| 1487 * needs to be drawn. | |
| 1488 * | |
| 1489 * @param listener the listener | |
| 1490 * @exception SWTException <ul> | |
| 1491 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1492 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1493 * </ul> | |
| 1494 * @exception IllegalArgumentException <ul> | |
| 1495 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1496 * </ul> | |
| 1497 * | |
| 1498 * @since 3.2 | |
| 1499 * | |
| 1500 * @see PaintObjectListener | |
| 1501 * @see PaintObjectEvent | |
| 1502 */ | |
| 1503 public void addPaintObjectListener(PaintObjectListener listener) { | |
| 1504 checkWidget(); | |
| 1505 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1506 addListener(PaintObject, new StyledTextListener(listener)); | |
| 1507 } | |
| 1508 /** | |
| 1509 * Adds a selection listener. A Selection event is sent by the widget when the | |
| 1510 * user changes the selection. | |
| 1511 * <p> | |
| 1512 * When <code>widgetSelected</code> is called, the event x and y fields contain | |
| 1513 * the start and end caret indices of the selection. | |
| 1514 * <code>widgetDefaultSelected</code> is not called for StyledTexts. | |
| 1515 * </p> | |
| 1516 * | |
| 1517 * @param listener the listener which should be notified when the user changes the receiver's selection | |
| 1518 | |
| 1519 * @exception IllegalArgumentException <ul> | |
| 1520 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 1521 * </ul> | |
| 1522 * @exception SWTException <ul> | |
| 1523 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1524 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1525 * </ul> | |
| 1526 * | |
| 1527 * @see SelectionListener | |
| 1528 * @see #removeSelectionListener | |
| 1529 * @see SelectionEvent | |
| 1530 */ | |
| 1531 public void addSelectionListener(SelectionListener listener) { | |
| 1532 checkWidget(); | |
| 1533 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1534 addListener(SWT.Selection, new TypedListener(listener)); | |
| 1535 } | |
| 1536 /** | |
| 1537 * Adds a verify key listener. A VerifyKey event is sent by the widget when a key | |
| 1538 * is pressed. The widget ignores the key press if the listener sets the doit field | |
| 1539 * of the event to false. | |
| 1540 * | |
| 1541 * @param listener the listener | |
| 1542 * @exception SWTException <ul> | |
| 1543 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1544 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1545 * </ul> | |
| 1546 * @exception IllegalArgumentException <ul> | |
| 1547 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1548 * </ul> | |
| 1549 */ | |
| 1550 public void addVerifyKeyListener(VerifyKeyListener listener) { | |
| 1551 checkWidget(); | |
| 1552 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1553 addListener(VerifyKey, new StyledTextListener(listener)); | |
| 1554 } | |
| 1555 /** | |
| 1556 * Adds a verify listener. A Verify event is sent by the widget when the widget text | |
| 1557 * is about to change. The listener can set the event text and the doit field to | |
| 1558 * change the text that is set in the widget or to force the widget to ignore the | |
| 1559 * text change. | |
| 1560 * | |
| 1561 * @param verifyListener the listener | |
| 1562 * @exception SWTException <ul> | |
| 1563 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1564 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1565 * </ul> | |
| 1566 * @exception IllegalArgumentException <ul> | |
| 1567 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1568 * </ul> | |
| 1569 */ | |
| 1570 public void addVerifyListener(VerifyListener verifyListener) { | |
| 1571 checkWidget(); | |
| 1572 if (verifyListener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1573 addListener(SWT.Verify, new TypedListener(verifyListener)); | |
| 1574 } | |
| 1575 /** | |
| 1576 * Adds a word movement listener. A movement event is sent when the boundary | |
| 1577 * of a word is needed. For example, this occurs during word next and word | |
| 1578 * previous actions. | |
| 1579 * | |
| 1580 * @param movementListener the listener | |
| 1581 * @exception SWTException <ul> | |
| 1582 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1583 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1584 * </ul> | |
| 1585 * @exception IllegalArgumentException <ul> | |
| 1586 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1587 * </ul> | |
| 1588 * | |
| 1589 * @see MovementEvent | |
| 1590 * @see MovementListener | |
| 1591 * @see #removeWordMovementListener | |
| 1592 * | |
| 1593 * @since 3.3 | |
| 1594 */ | |
| 1595 public void addWordMovementListener(MovementListener movementListener) { | |
| 1596 checkWidget(); | |
| 1597 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1598 addListener(WordNext, new StyledTextListener(movementListener)); | |
| 1599 addListener(WordPrevious, new StyledTextListener(movementListener)); | |
| 1600 } | |
| 1601 /** | |
| 1602 * Appends a string to the text at the end of the widget. | |
| 1603 * | |
| 1604 * @param string the string to be appended | |
| 1605 * @see #replaceTextRange(int,int,String) | |
| 1606 * @exception SWTException <ul> | |
| 1607 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1608 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1609 * </ul> | |
| 1610 */ | |
| 1611 public void append(String string) { | |
| 1612 checkWidget(); | |
| 1613 // SWT extension: allow null for zero length string | |
| 1614 // if (string is null) { | |
| 1615 // SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1616 // } | |
| 1617 int lastChar = Math.max(getCharCount(), 0); | |
| 1618 replaceTextRange(lastChar, 0, string); | |
| 1619 } | |
| 1620 /** | |
| 1621 * Calculates the scroll bars | |
| 1622 */ | |
| 1623 void calculateScrollBars() { | |
| 1624 ScrollBar horizontalBar = getHorizontalBar(); | |
| 1625 ScrollBar verticalBar = getVerticalBar(); | |
| 1626 setScrollBars(true); | |
| 1627 if (verticalBar !is null) { | |
| 1628 verticalBar.setIncrement(getVerticalIncrement()); | |
| 1629 } | |
| 1630 if (horizontalBar !is null) { | |
| 1631 horizontalBar.setIncrement(getHorizontalIncrement()); | |
| 1632 } | |
| 1633 } | |
| 1634 /** | |
| 1635 * Calculates the top index based on the current vertical scroll offset. | |
| 1636 * The top index is the index of the topmost fully visible line or the | |
| 1637 * topmost partially visible line if no line is fully visible. | |
| 1638 * The top index starts at 0. | |
| 1639 */ | |
| 1640 void calculateTopIndex(int delta) { | |
| 1641 int oldTopIndex = topIndex; | |
| 1642 int oldTopIndexY = topIndexY; | |
| 1643 if (isFixedLineHeight()) { | |
| 1644 int verticalIncrement = getVerticalIncrement(); | |
| 1645 if (verticalIncrement is 0) { | |
| 1646 return; | |
| 1647 } | |
| 1648 topIndex = Compatibility.ceil(getVerticalScrollOffset(), verticalIncrement); | |
| 1649 // Set top index to partially visible top line if no line is fully | |
| 1650 // visible but at least some of the widget client area is visible. | |
| 1651 // Fixes bug 15088. | |
| 1652 if (topIndex > 0) { | |
| 1653 if (clientAreaHeight > 0) { | |
| 1654 int bottomPixel = getVerticalScrollOffset() + clientAreaHeight; | |
| 1655 int fullLineTopPixel = topIndex * verticalIncrement; | |
| 1656 int fullLineVisibleHeight = bottomPixel - fullLineTopPixel; | |
| 1657 // set top index to partially visible line if no line fully fits in | |
| 1658 // client area or if space is available but not used (the latter should | |
| 1659 // never happen because we use claimBottomFreeSpace) | |
| 1660 if (fullLineVisibleHeight < verticalIncrement) { | |
| 1661 topIndex--; | |
| 1662 } | |
| 1663 } else if (topIndex >= content.getLineCount()) { | |
| 1664 topIndex = content.getLineCount() - 1; | |
| 1665 } | |
| 1666 } | |
| 1667 } else { | |
| 1668 if (delta >= 0) { | |
| 1669 delta -= topIndexY; | |
| 1670 int lineIndex = topIndex; | |
| 1671 int lineCount = content.getLineCount(); | |
| 1672 while (lineIndex < lineCount) { | |
| 1673 if (delta <= 0) break; | |
| 1674 delta -= renderer.getLineHeight(lineIndex++); | |
| 1675 } | |
| 1676 if (lineIndex < lineCount && -delta + renderer.getLineHeight(lineIndex) <= clientAreaHeight - topMargin - bottomMargin) { | |
| 1677 topIndex = lineIndex; | |
| 1678 topIndexY = -delta; | |
| 1679 } else { | |
| 1680 topIndex = lineIndex - 1; | |
| 1681 topIndexY = -renderer.getLineHeight(topIndex) - delta; | |
| 1682 } | |
| 1683 } else { | |
| 1684 delta -= topIndexY; | |
| 1685 int lineIndex = topIndex; | |
| 1686 while (lineIndex > 0) { | |
| 1687 int lineHeight = renderer.getLineHeight(lineIndex - 1); | |
| 1688 if (delta + lineHeight > 0) break; | |
| 1689 delta += lineHeight; | |
| 1690 lineIndex--; | |
| 1691 } | |
| 1692 if (lineIndex is 0 || -delta + renderer.getLineHeight(lineIndex) <= clientAreaHeight - topMargin - bottomMargin) { | |
| 1693 topIndex = lineIndex; | |
| 1694 topIndexY = - delta; | |
| 1695 } else { | |
| 1696 topIndex = lineIndex - 1; | |
| 1697 topIndexY = - renderer.getLineHeight(topIndex) - delta; | |
| 1698 } | |
| 1699 } | |
| 1700 } | |
| 1701 if (topIndex !is oldTopIndex || oldTopIndexY !is topIndexY) { | |
| 1702 renderer.calculateClientArea(); | |
| 1703 setScrollBars(false); | |
| 1704 } | |
| 1705 } | |
| 1706 /** | |
| 1707 * Hides the scroll bars if widget is created in single line mode. | |
| 1708 */ | |
| 1709 static int checkStyle(int style) { | |
| 1710 if ((style & SWT.SINGLE) !is 0) { | |
| 1711 style &= ~(SWT.H_SCROLL | SWT.V_SCROLL | SWT.WRAP | SWT.MULTI); | |
| 1712 } else { | |
| 1713 style |= SWT.MULTI; | |
| 1714 if ((style & SWT.WRAP) !is 0) { | |
| 1715 style &= ~SWT.H_SCROLL; | |
| 1716 } | |
| 1717 } | |
| 1718 style |= SWT.NO_REDRAW_RESIZE | SWT.DOUBLE_BUFFERED | SWT.NO_BACKGROUND; | |
| 1719 return style; | |
| 1720 } | |
| 1721 /** | |
| 1722 * Scrolls down the text to use new space made available by a resize or by | |
| 1723 * deleted lines. | |
| 1724 */ | |
| 1725 void claimBottomFreeSpace() { | |
| 1726 int clientAreaHeight = this.clientAreaHeight - topMargin - bottomMargin; | |
| 1727 if (isFixedLineHeight()) { | |
| 1728 int lineHeight = renderer.getLineHeight(); | |
| 1729 int newVerticalOffset = Math.max(0, content.getLineCount() * lineHeight - clientAreaHeight); | |
| 1730 if (newVerticalOffset < getVerticalScrollOffset()) { | |
| 1731 scrollVertical(newVerticalOffset - getVerticalScrollOffset(), true); | |
| 1732 } | |
| 1733 } else { | |
| 1734 int bottomIndex = getPartialBottomIndex(); | |
| 1735 int height = getLinePixel(bottomIndex + 1); | |
| 1736 if (clientAreaHeight > height) { | |
| 1737 scrollVertical(-getAvailableHeightAbove(clientAreaHeight - height), true); | |
| 1738 } | |
| 1739 } | |
| 1740 } | |
| 1741 /** | |
| 1742 * Scrolls text to the right to use new space made available by a resize. | |
| 1743 */ | |
| 1744 void claimRightFreeSpace() { | |
| 1745 int newHorizontalOffset = Math.max(0, renderer.getWidth() - (clientAreaWidth - leftMargin - rightMargin)); | |
| 1746 if (newHorizontalOffset < horizontalScrollOffset) { | |
| 1747 // item is no longer drawn past the right border of the client area | |
| 1748 // align the right end of the item with the right border of the | |
| 1749 // client area (window is scrolled right). | |
| 1750 scrollHorizontal(newHorizontalOffset - horizontalScrollOffset, true); | |
| 1751 } | |
| 1752 } | |
| 1753 /** | |
| 1754 * Removes the widget selection. | |
| 1755 * | |
| 1756 * @param sendEvent a Selection event is sent when set to true and when the selection is actually reset. | |
| 1757 */ | |
| 1758 void clearSelection(bool sendEvent) { | |
| 1759 int selectionStart = selection.x; | |
| 1760 int selectionEnd = selection.y; | |
| 1761 resetSelection(); | |
| 1762 // redraw old selection, if any | |
| 1763 if (selectionEnd - selectionStart > 0) { | |
| 1764 int length = content.getCharCount(); | |
| 1765 // called internally to remove selection after text is removed | |
| 1766 // therefore make sure redraw range is valid. | |
| 1767 int redrawStart = Math.min(selectionStart, length); | |
| 1768 int redrawEnd = Math.min(selectionEnd, length); | |
|
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|
1769 if (redrawEnd - redrawStart > 0 && selectedTextValid) { |
| 25 | 1770 internalRedrawRange(redrawStart, redrawEnd - redrawStart); |
| 1771 } | |
| 1772 if (sendEvent) { | |
| 1773 sendSelectionEvent(); | |
| 1774 } | |
| 1775 } | |
|
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parents:
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changeset
|
1776 selectedTextValid = true; |
| 25 | 1777 } |
| 1778 public override Point computeSize (int wHint, int hHint, bool changed) { | |
| 1779 checkWidget(); | |
| 1780 int lineCount = (getStyle() & SWT.SINGLE) !is 0 ? 1 : content.getLineCount(); | |
| 1781 int width = 0; | |
| 1782 int height = 0; | |
| 1783 if (wHint is SWT.DEFAULT || hHint is SWT.DEFAULT) { | |
| 1784 Display display = getDisplay(); | |
| 1785 int maxHeight = display.getClientArea().height; | |
| 1786 for (int lineIndex = 0; lineIndex < lineCount; lineIndex++) { | |
| 1787 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 1788 int wrapWidth = layout.getWidth(); | |
| 1789 if (wordWrap) layout.setWidth(wHint is 0 ? 1 : wHint); | |
| 1790 Rectangle rect = layout.getBounds(); | |
| 1791 height += rect.height; | |
| 1792 width = Math.max(width, rect.width); | |
| 1793 layout.setWidth(wrapWidth); | |
| 1794 renderer.disposeTextLayout(layout); | |
| 1795 if (isFixedLineHeight() && height > maxHeight) break; | |
| 1796 } | |
| 1797 if (isFixedLineHeight()) { | |
| 1798 height = lineCount * renderer.getLineHeight(); | |
| 1799 } | |
| 1800 } | |
| 1801 // Use default values if no text is defined. | |
| 1802 if (width is 0) width = DEFAULT_WIDTH; | |
| 1803 if (height is 0) height = DEFAULT_HEIGHT; | |
| 1804 if (wHint !is SWT.DEFAULT) width = wHint; | |
| 1805 if (hHint !is SWT.DEFAULT) height = hHint; | |
| 1806 int wTrim = leftMargin + rightMargin + getCaretWidth(); | |
| 1807 int hTrim = topMargin + bottomMargin; | |
| 1808 Rectangle rect = computeTrim(0, 0, width + wTrim, height + hTrim); | |
| 1809 return new Point (rect.width, rect.height); | |
| 1810 } | |
| 1811 /** | |
| 1812 * Copies the selected text to the <code>DND.CLIPBOARD</code> clipboard. | |
| 1813 * <p> | |
| 1814 * The text will be put on the clipboard in plain text format and RTF format. | |
| 1815 * The <code>DND.CLIPBOARD</code> clipboard is used for data that is | |
| 1816 * transferred by keyboard accelerator (such as Ctrl+C/Ctrl+V) or | |
| 1817 * by menu action. | |
| 1818 * </p> | |
| 1819 * | |
| 1820 * @exception SWTException <ul> | |
| 1821 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1822 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1823 * </ul> | |
| 1824 */ | |
| 1825 public void copy() { | |
| 1826 checkWidget(); | |
| 1827 copy(DND.CLIPBOARD); | |
| 1828 } | |
| 1829 /** | |
| 1830 * Copies the selected text to the specified clipboard. The text will be put in the | |
| 1831 * clipboard in plain text format and RTF format. | |
| 1832 * <p> | |
| 1833 * The clipboardType is one of the clipboard constants defined in class | |
| 1834 * <code>DND</code>. The <code>DND.CLIPBOARD</code> clipboard is | |
| 1835 * used for data that is transferred by keyboard accelerator (such as Ctrl+C/Ctrl+V) | |
| 1836 * or by menu action. The <code>DND.SELECTION_CLIPBOARD</code> | |
| 1837 * clipboard is used for data that is transferred by selecting text and pasting | |
| 1838 * with the middle mouse button. | |
| 1839 * </p> | |
| 1840 * | |
| 1841 * @param clipboardType indicates the type of clipboard | |
| 1842 * | |
| 1843 * @exception SWTException <ul> | |
| 1844 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1845 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1846 * </ul> | |
| 1847 * | |
| 1848 * @since 3.1 | |
| 1849 */ | |
| 1850 public void copy(int clipboardType) { | |
| 1851 checkWidget(); | |
| 1852 if (clipboardType !is DND.CLIPBOARD && clipboardType !is DND.SELECTION_CLIPBOARD) return; | |
| 1853 int length = selection.y - selection.x; | |
| 1854 if (length > 0) { | |
| 1855 try { | |
| 1856 setClipboardContent(selection.x, length, clipboardType); | |
| 1857 } catch (SWTError error) { | |
| 1858 // Copy to clipboard failed. This happens when another application | |
| 1859 // is accessing the clipboard while we copy. Ignore the error. | |
| 1860 // Fixes 1GDQAVN | |
| 1861 // Rethrow all other errors. Fixes bug 17578. | |
| 1862 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 1863 throw error; | |
| 1864 } | |
| 1865 } | |
| 1866 } | |
| 1867 } | |
| 1868 /** | |
| 1869 * Returns the alignment of the widget. | |
| 1870 * | |
| 1871 * @return the alignment | |
| 1872 * | |
| 1873 * @exception SWTException <ul> | |
| 1874 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1875 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1876 * </ul> | |
| 1877 * | |
| 1878 * @see #getLineAlignment(int) | |
| 1879 * | |
| 1880 * @since 3.2 | |
| 1881 */ | |
| 1882 public int getAlignment() { | |
| 1883 checkWidget(); | |
| 1884 return alignment; | |
| 1885 } | |
| 1886 int getAvailableHeightAbove(int height) { | |
| 1887 int maxHeight = verticalScrollOffset; | |
| 1888 if (maxHeight is -1) { | |
| 1889 int lineIndex = topIndex - 1; | |
| 1890 maxHeight = -topIndexY; | |
| 1891 if (topIndexY > 0) { | |
| 1892 maxHeight += renderer.getLineHeight(lineIndex--); | |
| 1893 } | |
| 1894 while (height > maxHeight && lineIndex >= 0) { | |
| 1895 maxHeight += renderer.getLineHeight(lineIndex--); | |
| 1896 } | |
| 1897 } | |
| 1898 return Math.min(height, maxHeight); | |
| 1899 } | |
| 1900 int getAvailableHeightBellow(int height) { | |
| 1901 int partialBottomIndex = getPartialBottomIndex(); | |
| 1902 int topY = getLinePixel(partialBottomIndex); | |
| 1903 int lineHeight = renderer.getLineHeight(partialBottomIndex); | |
| 1904 int availableHeight = 0; | |
| 1905 int clientAreaHeight = this.clientAreaHeight - topMargin - bottomMargin; | |
| 1906 if (topY + lineHeight > clientAreaHeight) { | |
| 1907 availableHeight = lineHeight - (clientAreaHeight - topY); | |
| 1908 } | |
| 1909 int lineIndex = partialBottomIndex + 1; | |
| 1910 int lineCount = content.getLineCount(); | |
| 1911 while (height > availableHeight && lineIndex < lineCount) { | |
| 1912 availableHeight += renderer.getLineHeight(lineIndex++); | |
| 1913 } | |
| 1914 return Math.min(height, availableHeight); | |
| 1915 } | |
| 1916 /** | |
| 1917 * Returns a string that uses only the line delimiter specified by the | |
| 1918 * StyledTextContent implementation. | |
| 1919 * <p> | |
| 1920 * Returns only the first line if the widget has the SWT.SINGLE style. | |
| 1921 * </p> | |
| 1922 * | |
| 1923 * @param text the text that may have line delimiters that don't | |
| 1924 * match the model line delimiter. Possible line delimiters | |
| 1925 * are CR ('\r'), LF ('\n'), CR/LF ("\r\n") | |
| 1926 * @return the converted text that only uses the line delimiter | |
| 1927 * specified by the model. Returns only the first line if the widget | |
| 1928 * has the SWT.SINGLE style. | |
| 1929 */ | |
| 1930 String getModelDelimitedText(String text) { | |
| 1931 int length = text.length; | |
| 1932 if (length is 0) { | |
| 1933 return text; | |
| 1934 } | |
| 1935 int crIndex = 0; | |
| 1936 int lfIndex = 0; | |
| 1937 int i = 0; | |
| 1938 StringBuffer convertedText = new StringBuffer(length); | |
| 1939 String delimiter = getLineDelimiter(); | |
| 1940 while (i < length) { | |
| 1941 if (crIndex !is -1) { | |
| 1942 crIndex = text.indexOf (SWT.CR, i); | |
| 1943 } | |
| 1944 if (lfIndex !is -1) { | |
| 1945 lfIndex = text.indexOf (SWT.LF, i); | |
| 1946 } | |
| 1947 if (lfIndex is -1 && crIndex is -1) { // no more line breaks? | |
| 1948 break; | |
| 1949 } else if ((crIndex < lfIndex && crIndex !is -1) || lfIndex is -1) { | |
| 1950 convertedText.append(text.substring(i, crIndex)); | |
| 1951 if (lfIndex is crIndex + 1) { // CR/LF combination? | |
| 1952 i = lfIndex + 1; | |
| 1953 } else { | |
| 1954 i = crIndex + 1; | |
| 1955 } | |
| 1956 } else { // LF occurs before CR! | |
| 1957 convertedText.append(text.substring(i, lfIndex)); | |
| 1958 i = lfIndex + 1; | |
| 1959 } | |
| 1960 if (isSingleLine()) { | |
| 1961 break; | |
| 1962 } | |
| 1963 convertedText.append(delimiter); | |
| 1964 } | |
| 1965 // copy remaining text if any and if not in single line mode or no | |
| 1966 // text copied thus far (because there only is one line) | |
| 1967 if (i < length && (!isSingleLine() || convertedText.length() is 0)) { | |
| 1968 convertedText.append(text.substring(i)); | |
| 1969 } | |
| 1970 return convertedText.toString(); | |
| 1971 } | |
| 1972 bool checkDragDetect(Event event) { | |
| 1973 if (!isListening(SWT.DragDetect)) return false; | |
| 1974 if (IS_MOTIF) { | |
| 1975 if (event.button !is 2) return false; | |
| 1976 } else { | |
| 1977 if (event.button !is 1) return false; | |
| 1978 } | |
| 1979 if (selection.x is selection.y) return false; | |
| 1980 int offset = getOffsetAtPoint(event.x, event.y, null, true); | |
| 1981 if (selection.x <= offset && offset < selection.y) { | |
| 1982 return dragDetect(event); | |
| 1983 } | |
| 1984 return false; | |
| 1985 } | |
| 1986 /** | |
| 1987 * Creates default key bindings. | |
| 1988 */ | |
| 1989 void createKeyBindings() { | |
| 1990 int nextKey = isMirrored() ? SWT.ARROW_LEFT : SWT.ARROW_RIGHT; | |
| 1991 int previousKey = isMirrored() ? SWT.ARROW_RIGHT : SWT.ARROW_LEFT; | |
| 1992 | |
| 1993 // Navigation | |
| 1994 setKeyBinding(SWT.ARROW_UP, ST.LINE_UP); | |
| 1995 setKeyBinding(SWT.ARROW_DOWN, ST.LINE_DOWN); | |
| 1996 if (IS_CARBON) { | |
| 1997 setKeyBinding(previousKey | SWT.MOD1, ST.LINE_START); | |
| 1998 setKeyBinding(nextKey | SWT.MOD1, ST.LINE_END); | |
| 1999 setKeyBinding(SWT.HOME, ST.TEXT_START); | |
| 2000 setKeyBinding(SWT.END, ST.TEXT_END); | |
| 2001 setKeyBinding(SWT.ARROW_UP | SWT.MOD1, ST.TEXT_START); | |
| 2002 setKeyBinding(SWT.ARROW_DOWN | SWT.MOD1, ST.TEXT_END); | |
| 2003 setKeyBinding(nextKey | SWT.MOD3, ST.WORD_NEXT); | |
| 2004 setKeyBinding(previousKey | SWT.MOD3, ST.WORD_PREVIOUS); | |
| 2005 } else { | |
| 2006 setKeyBinding(SWT.HOME, ST.LINE_START); | |
| 2007 setKeyBinding(SWT.END, ST.LINE_END); | |
| 2008 setKeyBinding(SWT.HOME | SWT.MOD1, ST.TEXT_START); | |
| 2009 setKeyBinding(SWT.END | SWT.MOD1, ST.TEXT_END); | |
| 2010 setKeyBinding(nextKey | SWT.MOD1, ST.WORD_NEXT); | |
| 2011 setKeyBinding(previousKey | SWT.MOD1, ST.WORD_PREVIOUS); | |
| 2012 } | |
| 2013 setKeyBinding(SWT.PAGE_UP, ST.PAGE_UP); | |
| 2014 setKeyBinding(SWT.PAGE_DOWN, ST.PAGE_DOWN); | |
| 2015 setKeyBinding(SWT.PAGE_UP | SWT.MOD1, ST.WINDOW_START); | |
| 2016 setKeyBinding(SWT.PAGE_DOWN | SWT.MOD1, ST.WINDOW_END); | |
| 2017 setKeyBinding(nextKey, ST.COLUMN_NEXT); | |
| 2018 setKeyBinding(previousKey, ST.COLUMN_PREVIOUS); | |
| 2019 | |
| 2020 // Selection | |
| 2021 setKeyBinding(SWT.ARROW_UP | SWT.MOD2, ST.SELECT_LINE_UP); | |
| 2022 setKeyBinding(SWT.ARROW_DOWN | SWT.MOD2, ST.SELECT_LINE_DOWN); | |
| 2023 if (IS_CARBON) { | |
| 2024 setKeyBinding(previousKey | SWT.MOD1 | SWT.MOD2, ST.SELECT_LINE_START); | |
| 2025 setKeyBinding(nextKey | SWT.MOD1 | SWT.MOD2, ST.SELECT_LINE_END); | |
| 2026 setKeyBinding(SWT.HOME | SWT.MOD2, ST.SELECT_TEXT_START); | |
| 2027 setKeyBinding(SWT.END | SWT.MOD2, ST.SELECT_TEXT_END); | |
| 2028 setKeyBinding(SWT.ARROW_UP | SWT.MOD1 | SWT.MOD2, ST.SELECT_TEXT_START); | |
| 2029 setKeyBinding(SWT.ARROW_DOWN | SWT.MOD1 | SWT.MOD2, ST.SELECT_TEXT_END); | |
| 2030 setKeyBinding(nextKey | SWT.MOD2 | SWT.MOD3, ST.SELECT_WORD_NEXT); | |
| 2031 setKeyBinding(previousKey | SWT.MOD2 | SWT.MOD3, ST.SELECT_WORD_PREVIOUS); | |
| 2032 } else { | |
| 2033 setKeyBinding(SWT.HOME | SWT.MOD2, ST.SELECT_LINE_START); | |
| 2034 setKeyBinding(SWT.END | SWT.MOD2, ST.SELECT_LINE_END); | |
| 2035 setKeyBinding(SWT.HOME | SWT.MOD1 | SWT.MOD2, ST.SELECT_TEXT_START); | |
| 2036 setKeyBinding(SWT.END | SWT.MOD1 | SWT.MOD2, ST.SELECT_TEXT_END); | |
| 2037 setKeyBinding(nextKey | SWT.MOD1 | SWT.MOD2, ST.SELECT_WORD_NEXT); | |
| 2038 setKeyBinding(previousKey | SWT.MOD1 | SWT.MOD2, ST.SELECT_WORD_PREVIOUS); | |
| 2039 } | |
| 2040 setKeyBinding(SWT.PAGE_UP | SWT.MOD2, ST.SELECT_PAGE_UP); | |
| 2041 setKeyBinding(SWT.PAGE_DOWN | SWT.MOD2, ST.SELECT_PAGE_DOWN); | |
| 2042 setKeyBinding(SWT.PAGE_UP | SWT.MOD1 | SWT.MOD2, ST.SELECT_WINDOW_START); | |
| 2043 setKeyBinding(SWT.PAGE_DOWN | SWT.MOD1 | SWT.MOD2, ST.SELECT_WINDOW_END); | |
| 2044 setKeyBinding(nextKey | SWT.MOD2, ST.SELECT_COLUMN_NEXT); | |
| 2045 setKeyBinding(previousKey | SWT.MOD2, ST.SELECT_COLUMN_PREVIOUS); | |
| 2046 | |
| 2047 // Modification | |
| 2048 // Cut, Copy, Paste | |
| 2049 setKeyBinding('X' | SWT.MOD1, ST.CUT); | |
| 2050 setKeyBinding('C' | SWT.MOD1, ST.COPY); | |
| 2051 setKeyBinding('V' | SWT.MOD1, ST.PASTE); | |
| 2052 if (IS_CARBON) { | |
| 2053 setKeyBinding(SWT.DEL | SWT.MOD2, ST.DELETE_NEXT); | |
| 2054 setKeyBinding(SWT.BS | SWT.MOD3, ST.DELETE_WORD_PREVIOUS); | |
| 2055 setKeyBinding(SWT.DEL | SWT.MOD3, ST.DELETE_WORD_NEXT); | |
| 2056 } else { | |
| 2057 // Cut, Copy, Paste Wordstar style | |
| 2058 setKeyBinding(SWT.DEL | SWT.MOD2, ST.CUT); | |
| 2059 setKeyBinding(SWT.INSERT | SWT.MOD1, ST.COPY); | |
| 2060 setKeyBinding(SWT.INSERT | SWT.MOD2, ST.PASTE); | |
| 2061 } | |
| 2062 setKeyBinding(SWT.BS | SWT.MOD2, ST.DELETE_PREVIOUS); | |
| 2063 setKeyBinding(SWT.BS, ST.DELETE_PREVIOUS); | |
| 2064 setKeyBinding(SWT.DEL, ST.DELETE_NEXT); | |
| 2065 setKeyBinding(SWT.BS | SWT.MOD1, ST.DELETE_WORD_PREVIOUS); | |
| 2066 setKeyBinding(SWT.DEL | SWT.MOD1, ST.DELETE_WORD_NEXT); | |
| 2067 | |
| 2068 // Miscellaneous | |
| 2069 setKeyBinding(SWT.INSERT, ST.TOGGLE_OVERWRITE); | |
| 2070 } | |
| 2071 /** | |
| 2072 * Create the bitmaps to use for the caret in bidi mode. This | |
| 2073 * method only needs to be called upon widget creation and when the | |
| 2074 * font changes (the caret bitmap height needs to match font height). | |
| 2075 */ | |
| 2076 void createCaretBitmaps() { | |
| 2077 int caretWidth = BIDI_CARET_WIDTH; | |
| 2078 Display display = getDisplay(); | |
| 2079 if (leftCaretBitmap !is null) { | |
| 2080 if (defaultCaret !is null && leftCaretBitmap==/*eq*/defaultCaret.getImage()) { | |
| 2081 defaultCaret.setImage(null); | |
| 2082 } | |
| 2083 leftCaretBitmap.dispose(); | |
| 2084 } | |
| 2085 int lineHeight = renderer.getLineHeight(); | |
| 2086 leftCaretBitmap = new Image(display, caretWidth, lineHeight); | |
| 2087 GC gc = new GC (leftCaretBitmap); | |
| 2088 gc.setBackground(display.getSystemColor(SWT.COLOR_BLACK)); | |
| 2089 gc.fillRectangle(0, 0, caretWidth, lineHeight); | |
| 2090 gc.setForeground(display.getSystemColor(SWT.COLOR_WHITE)); | |
| 2091 gc.drawLine(0,0,0,lineHeight); | |
| 2092 gc.drawLine(0,0,caretWidth-1,0); | |
| 2093 gc.drawLine(0,1,1,1); | |
| 2094 gc.dispose(); | |
| 2095 | |
| 2096 if (rightCaretBitmap !is null) { | |
| 2097 if (defaultCaret !is null && rightCaretBitmap==/*eq*/defaultCaret.getImage()) { | |
| 2098 defaultCaret.setImage(null); | |
| 2099 } | |
| 2100 rightCaretBitmap.dispose(); | |
| 2101 } | |
| 2102 rightCaretBitmap = new Image(display, caretWidth, lineHeight); | |
| 2103 gc = new GC (rightCaretBitmap); | |
| 2104 gc.setBackground(display.getSystemColor(SWT.COLOR_BLACK)); | |
| 2105 gc.fillRectangle(0, 0, caretWidth, lineHeight); | |
| 2106 gc.setForeground(display.getSystemColor(SWT.COLOR_WHITE)); | |
| 2107 gc.drawLine(caretWidth-1,0,caretWidth-1,lineHeight); | |
| 2108 gc.drawLine(0,0,caretWidth-1,0); | |
| 2109 gc.drawLine(caretWidth-1,1,1,1); | |
| 2110 gc.dispose(); | |
| 2111 } | |
| 2112 /** | |
| 2113 * Moves the selected text to the clipboard. The text will be put in the | |
| 2114 * clipboard in plain text format and RTF format. | |
| 2115 * | |
| 2116 * @exception SWTException <ul> | |
| 2117 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 2118 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 2119 * </ul> | |
| 2120 */ | |
| 2121 public void cut(){ | |
| 2122 checkWidget(); | |
| 2123 int length = selection.y - selection.x; | |
| 2124 if (length > 0) { | |
| 2125 try { | |
| 2126 setClipboardContent(selection.x, length, DND.CLIPBOARD); | |
| 2127 } catch (SWTError error) { | |
| 2128 // Copy to clipboard failed. This happens when another application | |
| 2129 // is accessing the clipboard while we copy. Ignore the error. | |
| 2130 // Fixes 1GDQAVN | |
| 2131 // Rethrow all other errors. Fixes bug 17578. | |
| 2132 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 2133 throw error; | |
| 2134 } | |
| 2135 // Abort cut operation if copy to clipboard fails. | |
| 2136 // Fixes bug 21030. | |
| 2137 return; | |
| 2138 } | |
| 2139 doDelete(); | |
| 2140 } | |
| 2141 } | |
| 2142 /** | |
| 2143 * A mouse move event has occurred. See if we should start autoscrolling. If | |
| 2144 * the move position is outside of the client area, initiate autoscrolling. | |
| 2145 * Otherwise, we've moved back into the widget so end autoscrolling. | |
| 2146 */ | |
| 2147 void doAutoScroll(Event event) { | |
| 2148 if (event.y > clientAreaHeight) { | |
| 2149 doAutoScroll(SWT.DOWN, event.y - clientAreaHeight); | |
| 2150 } else if (event.y < 0) { | |
| 2151 doAutoScroll(SWT.UP, -event.y); | |
| 2152 } else if (event.x < leftMargin && !wordWrap) { | |
| 2153 doAutoScroll(ST.COLUMN_PREVIOUS, leftMargin - event.x); | |
| 2154 } else if (event.x > clientAreaWidth - leftMargin - rightMargin && !wordWrap) { | |
| 2155 doAutoScroll(ST.COLUMN_NEXT, event.x - (clientAreaWidth - leftMargin - rightMargin)); | |
| 2156 } else { | |
| 2157 endAutoScroll(); | |
| 2158 } | |
| 2159 } | |
| 2160 /** | |
| 2161 * Initiates autoscrolling. | |
| 2162 * | |
| 2163 * @param direction SWT.UP, SWT.DOWN, SWT.COLUMN_NEXT, SWT.COLUMN_PREVIOUS | |
| 2164 */ | |
| 2165 void doAutoScroll(int direction, int distance) { | |
| 2166 autoScrollDistance = distance; | |
| 2167 // If we're already autoscrolling in the given direction do nothing | |
| 2168 if (autoScrollDirection is direction) { | |
| 2169 return; | |
| 2170 } | |
| 2171 | |
| 2172 Runnable timer = null; | |
|
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|
2173 Display disp = getDisplay(); |
| 25 | 2174 // Set a timer that will simulate the user pressing and holding |
| 2175 // down a cursor key (i.e., arrowUp, arrowDown). | |
| 2176 if (direction is SWT.UP) { | |
| 2177 timer = new class(disp) Runnable { | |
| 2178 Display display; | |
| 2179 this( Display d ){ this.display = d; } | |
| 2180 public void run() { | |
| 2181 if (autoScrollDirection is SWT.UP) { | |
| 2182 doSelectionPageUp(autoScrollDistance); | |
| 2183 display.timerExec(V_SCROLL_RATE, this); | |
| 2184 } | |
| 2185 } | |
| 2186 }; | |
| 2187 autoScrollDirection = direction; | |
| 2188 display.timerExec(V_SCROLL_RATE, timer); | |
| 2189 } else if (direction is SWT.DOWN) { | |
| 2190 timer = new class(disp) Runnable { | |
| 2191 Display display; | |
| 2192 this( Display d ){ this.display = d; } | |
| 2193 public void run() { | |
| 2194 if (autoScrollDirection is SWT.DOWN) { | |
| 2195 doSelectionPageDown(autoScrollDistance); | |
| 2196 display.timerExec(V_SCROLL_RATE, this); | |
| 2197 } | |
| 2198 } | |
| 2199 }; | |
| 2200 autoScrollDirection = direction; | |
| 2201 display.timerExec(V_SCROLL_RATE, timer); | |
| 2202 } else if (direction is ST.COLUMN_NEXT) { | |
| 2203 timer = new class(disp) Runnable { | |
| 2204 Display display; | |
| 2205 this( Display d ){ this.display = d; } | |
| 2206 public void run() { | |
| 2207 if (autoScrollDirection is ST.COLUMN_NEXT) { | |
| 2208 doVisualNext(); | |
| 2209 setMouseWordSelectionAnchor(); | |
| 2210 doMouseSelection(); | |
| 2211 display.timerExec(H_SCROLL_RATE, this); | |
| 2212 } | |
| 2213 } | |
| 2214 }; | |
| 2215 autoScrollDirection = direction; | |
| 2216 display.timerExec(H_SCROLL_RATE, timer); | |
| 2217 } else if (direction is ST.COLUMN_PREVIOUS) { | |
| 2218 timer = new class(disp) Runnable { | |
| 2219 Display display; | |
| 2220 this( Display d ){ this.display = d; } | |
| 2221 public void run() { | |
| 2222 if (autoScrollDirection is ST.COLUMN_PREVIOUS) { | |
| 2223 doVisualPrevious(); | |
| 2224 setMouseWordSelectionAnchor(); | |
| 2225 doMouseSelection(); | |
| 2226 display.timerExec(H_SCROLL_RATE, this); | |
| 2227 } | |
| 2228 } | |
| 2229 }; | |
| 2230 autoScrollDirection = direction; | |
| 2231 display.timerExec(H_SCROLL_RATE, timer); | |
| 2232 } | |
| 2233 } | |
| 2234 /** | |
| 2235 * Deletes the previous character. Delete the selected text if any. | |
| 2236 * Move the caret in front of the deleted text. | |
| 2237 */ | |
| 2238 void doBackspace() { | |
| 2239 Event event = new Event(); | |
| 2240 event.text = ""; | |
| 2241 if (selection.x !is selection.y) { | |
| 2242 event.start = selection.x; | |
| 2243 event.end = selection.y; | |
| 2244 sendKeyEvent(event); | |
| 2245 } else if (caretOffset > 0) { | |
| 2246 int lineIndex = content.getLineAtOffset(caretOffset); | |
| 2247 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 2248 if (caretOffset is lineOffset) { | |
|
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2249 // DWT: on line start, delete line break |
| 25 | 2250 lineOffset = content.getOffsetAtLine(lineIndex - 1); |
| 2251 event.start = lineOffset + content.getLine(lineIndex - 1).length; | |
| 2252 event.end = caretOffset; | |
| 2253 } else { | |
| 2254 TextLayout layout = renderer.getTextLayout(lineIndex); | |
|
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2255 int start = layout.getPreviousOffset(caretOffset - lineOffset, SWT.MOVEMENT_CHAR); |
| 25 | 2256 renderer.disposeTextLayout(layout); |
| 2257 event.start = start + lineOffset; | |
| 2258 event.end = caretOffset; | |
| 2259 } | |
| 2260 sendKeyEvent(event); | |
| 2261 } | |
| 2262 } | |
| 2263 /** | |
| 2264 * Replaces the selection with the character or insert the character at the | |
| 2265 * current caret position if no selection exists. | |
| 2266 * <p> | |
| 2267 * If a carriage return was typed replace it with the line break character | |
| 2268 * used by the widget on this platform. | |
| 2269 * </p> | |
| 2270 * | |
| 2271 * @param key the character typed by the user | |
| 2272 */ | |
| 2273 void doContent(dchar key) { | |
| 2274 Event event = new Event(); | |
| 2275 event.start = selection.x; | |
| 2276 event.end = selection.y; | |
| 2277 // replace a CR line break with the widget line break | |
| 2278 // CR does not make sense on Windows since most (all?) applications | |
| 2279 // don't recognize CR as a line break. | |
| 2280 if (key is SWT.CR || key is SWT.LF) { | |
| 2281 if (!isSingleLine()) { | |
| 2282 event.text = getLineDelimiter(); | |
| 2283 } | |
| 2284 } else if (selection.x is selection.y && overwrite && key !is TAB) { | |
| 2285 // no selection and overwrite mode is on and the typed key is not a | |
| 2286 // tab character (tabs are always inserted without overwriting)? | |
| 2287 int lineIndex = content.getLineAtOffset(event.end); | |
| 2288 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 2289 String line = content.getLine(lineIndex); | |
| 2290 // replace character at caret offset if the caret is not at the | |
| 2291 // end of the line | |
| 2292 if (event.end < lineOffset + line.length) { | |
|
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|
2293 event.end += line.UTF8strideAt(event.end - lineOffset); |
| 25 | 2294 } |
| 2295 event.text = dcharToString( key ); | |
| 2296 } else { | |
| 2297 event.text = dcharToString( key ); | |
| 2298 } | |
| 2299 if (event.text !is null) { | |
| 2300 if (textLimit > 0 && content.getCharCount() - (event.end - event.start) >= textLimit) { | |
| 2301 return; | |
| 2302 } | |
| 2303 sendKeyEvent(event); | |
| 2304 } | |
| 2305 } | |
| 2306 /** | |
| 2307 * Moves the caret after the last character of the widget content. | |
| 2308 */ | |
| 2309 void doContentEnd() { | |
| 2310 // place caret at end of first line if receiver is in single | |
| 2311 // line mode. fixes 4820. | |
| 2312 if (isSingleLine()) { | |
| 2313 doLineEnd(); | |
| 2314 } else { | |
| 2315 int length = content.getCharCount(); | |
| 2316 if (caretOffset < length) { | |
| 2317 caretOffset = length; | |
| 2318 showCaret(); | |
| 2319 } | |
| 2320 } | |
| 2321 } | |
| 2322 /** | |
| 2323 * Moves the caret in front of the first character of the widget content. | |
| 2324 */ | |
| 2325 void doContentStart() { | |
| 2326 if (caretOffset > 0) { | |
| 2327 caretOffset = 0; | |
| 2328 showCaret(); | |
| 2329 } | |
| 2330 } | |
| 2331 /** | |
| 2332 * Moves the caret to the start of the selection if a selection exists. | |
| 2333 * Otherwise, if no selection exists move the cursor according to the | |
| 2334 * cursor selection rules. | |
| 2335 * | |
| 2336 * @see #doSelectionCursorPrevious | |
| 2337 */ | |
| 2338 void doCursorPrevious() { | |
| 2339 if (selection.y - selection.x > 0) { | |
| 2340 caretOffset = selection.x; | |
| 2341 caretAlignment = OFFSET_LEADING; | |
| 2342 showCaret(); | |
| 2343 } else { | |
| 2344 doSelectionCursorPrevious(); | |
| 2345 } | |
| 2346 } | |
| 2347 /** | |
| 2348 * Moves the caret to the end of the selection if a selection exists. | |
| 2349 * Otherwise, if no selection exists move the cursor according to the | |
| 2350 * cursor selection rules. | |
| 2351 * | |
| 2352 * @see #doSelectionCursorNext | |
| 2353 */ | |
| 2354 void doCursorNext() { | |
| 2355 if (selection.y - selection.x > 0) { | |
| 2356 caretOffset = selection.y; | |
| 2357 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 2358 showCaret(); | |
| 2359 } else { | |
| 2360 doSelectionCursorNext(); | |
| 2361 } | |
| 2362 } | |
| 2363 /** | |
| 2364 * Deletes the next character. Delete the selected text if any. | |
| 2365 */ | |
| 2366 void doDelete() { | |
| 2367 Event event = new Event(); | |
| 2368 event.text = ""; | |
| 2369 if (selection.x !is selection.y) { | |
| 2370 event.start = selection.x; | |
| 2371 event.end = selection.y; | |
| 2372 sendKeyEvent(event); | |
| 2373 } else if (caretOffset < content.getCharCount()) { | |
| 2374 int line = content.getLineAtOffset(caretOffset); | |
| 2375 int lineOffset = content.getOffsetAtLine(line); | |
| 2376 int lineLength = content.getLine(line).length; | |
| 2377 if (caretOffset is lineOffset + lineLength) { | |
| 2378 event.start = caretOffset; | |
| 2379 event.end = content.getOffsetAtLine(line + 1); | |
| 2380 } else { | |
| 2381 event.start = caretOffset; | |
| 2382 event.end = getClusterNext(caretOffset, line); | |
| 2383 } | |
| 2384 sendKeyEvent(event); | |
| 2385 } | |
| 2386 } | |
| 2387 /** | |
| 2388 * Deletes the next word. | |
| 2389 */ | |
| 2390 void doDeleteWordNext() { | |
| 2391 if (selection.x !is selection.y) { | |
| 2392 // if a selection exists, treat the as if | |
| 2393 // only the delete key was pressed | |
| 2394 doDelete(); | |
| 2395 } else { | |
| 2396 Event event = new Event(); | |
| 2397 event.text = ""; | |
| 2398 event.start = caretOffset; | |
| 2399 event.end = getWordNext(caretOffset, SWT.MOVEMENT_WORD); | |
| 2400 sendKeyEvent(event); | |
| 2401 } | |
| 2402 } | |
| 2403 /** | |
| 2404 * Deletes the previous word. | |
| 2405 */ | |
| 2406 void doDeleteWordPrevious() { | |
| 2407 if (selection.x !is selection.y) { | |
| 2408 // if a selection exists, treat as if | |
| 2409 // only the backspace key was pressed | |
| 2410 doBackspace(); | |
| 2411 } else { | |
| 2412 Event event = new Event(); | |
| 2413 event.text = ""; | |
| 2414 event.start = getWordPrevious(caretOffset, SWT.MOVEMENT_WORD); | |
| 2415 event.end = caretOffset; | |
| 2416 sendKeyEvent(event); | |
| 2417 } | |
| 2418 } | |
| 2419 /** | |
| 2420 * Moves the caret one line down and to the same character offset relative | |
| 2421 * to the beginning of the line. Move the caret to the end of the new line | |
| 2422 * if the new line is shorter than the character offset. | |
| 2423 */ | |
| 2424 void doLineDown(bool select) { | |
| 2425 int caretLine = getCaretLine(); | |
| 2426 int lineCount = content.getLineCount(); | |
| 2427 int y = 0; | |
| 2428 bool lastLine = false; | |
| 2429 if (wordWrap) { | |
| 2430 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2431 int offsetInLine = caretOffset - lineOffset; | |
| 2432 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2433 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2434 int layoutLineCount = layout.getLineCount(); | |
| 2435 if (lineIndex is layoutLineCount - 1) { | |
| 2436 lastLine = caretLine is lineCount - 1; | |
| 2437 caretLine++; | |
| 2438 } else { | |
| 2439 y = layout.getLineBounds(lineIndex + 1).y; | |
| 2440 } | |
| 2441 renderer.disposeTextLayout(layout); | |
| 2442 } else { | |
| 2443 lastLine = caretLine is lineCount - 1; | |
| 2444 caretLine++; | |
| 2445 } | |
| 2446 if (lastLine) { | |
| 2447 if (select) caretOffset = content.getCharCount(); | |
| 2448 } else { | |
| 2449 caretOffset = getOffsetAtPoint(columnX, y, caretLine); | |
| 2450 } | |
| 2451 int oldColumnX = columnX; | |
| 2452 int oldHScrollOffset = horizontalScrollOffset; | |
| 2453 if (select) { | |
| 2454 setMouseWordSelectionAnchor(); | |
| 2455 // select first and then scroll to reduce flash when key | |
| 2456 // repeat scrolls lots of lines | |
| 2457 doSelection(ST.COLUMN_NEXT); | |
| 2458 } | |
| 2459 showCaret(); | |
| 2460 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2461 columnX = oldColumnX + hScrollChange; | |
| 2462 } | |
| 2463 /** | |
| 2464 * Moves the caret to the end of the line. | |
| 2465 */ | |
| 2466 void doLineEnd() { | |
| 2467 int caretLine = getCaretLine(); | |
| 2468 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2469 int lineEndOffset; | |
| 2470 if (wordWrap) { | |
| 2471 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2472 int offsetInLine = caretOffset - lineOffset; | |
| 2473 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2474 int[] offsets = layout.getLineOffsets(); | |
| 2475 lineEndOffset = lineOffset + offsets[lineIndex + 1]; | |
| 2476 renderer.disposeTextLayout(layout); | |
| 2477 } else { | |
| 2478 int lineLength = content.getLine(caretLine).length; | |
| 2479 lineEndOffset = lineOffset + lineLength; | |
| 2480 } | |
| 2481 if (caretOffset < lineEndOffset) { | |
| 2482 caretOffset = lineEndOffset; | |
| 2483 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 2484 showCaret(); | |
| 2485 } | |
| 2486 } | |
| 2487 /** | |
| 2488 * Moves the caret to the beginning of the line. | |
| 2489 */ | |
| 2490 void doLineStart() { | |
| 2491 int caretLine = getCaretLine(); | |
| 2492 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2493 if (wordWrap) { | |
| 2494 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2495 int offsetInLine = caretOffset - lineOffset; | |
| 2496 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2497 int[] offsets = layout.getLineOffsets(); | |
| 2498 lineOffset += offsets[lineIndex]; | |
| 2499 renderer.disposeTextLayout(layout); | |
| 2500 } | |
| 2501 if (caretOffset > lineOffset) { | |
| 2502 caretOffset = lineOffset; | |
| 2503 caretAlignment = OFFSET_LEADING; | |
| 2504 showCaret(); | |
| 2505 } | |
| 2506 } | |
| 2507 /** | |
| 2508 * Moves the caret one line up and to the same character offset relative | |
| 2509 * to the beginning of the line. Move the caret to the end of the new line | |
| 2510 * if the new line is shorter than the character offset. | |
| 2511 */ | |
| 2512 void doLineUp(bool select) { | |
| 2513 int caretLine = getCaretLine(), y = 0; | |
| 2514 bool firstLine = false; | |
| 2515 if (wordWrap) { | |
| 2516 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2517 int offsetInLine = caretOffset - lineOffset; | |
| 2518 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2519 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2520 if (lineIndex is 0) { | |
| 2521 firstLine = caretLine is 0; | |
| 2522 if (!firstLine) { | |
| 2523 caretLine--; | |
| 2524 y = renderer.getLineHeight(caretLine) - 1; | |
| 2525 } | |
| 2526 } else { | |
| 2527 y = layout.getLineBounds(lineIndex - 1).y; | |
| 2528 } | |
| 2529 renderer.disposeTextLayout(layout); | |
| 2530 } else { | |
| 2531 firstLine = caretLine is 0; | |
| 2532 caretLine--; | |
| 2533 } | |
| 2534 if (firstLine) { | |
| 2535 if (select) caretOffset = 0; | |
| 2536 } else { | |
| 2537 caretOffset = getOffsetAtPoint(columnX, y, caretLine); | |
| 2538 } | |
| 2539 int oldColumnX = columnX; | |
| 2540 int oldHScrollOffset = horizontalScrollOffset; | |
| 2541 if (select) setMouseWordSelectionAnchor(); | |
| 2542 showCaret(); | |
| 2543 if (select) doSelection(ST.COLUMN_PREVIOUS); | |
| 2544 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2545 columnX = oldColumnX + hScrollChange; | |
| 2546 } | |
| 2547 /** | |
| 2548 * Moves the caret to the specified location. | |
| 2549 * | |
| 2550 * @param x x location of the new caret position | |
| 2551 * @param y y location of the new caret position | |
| 2552 * @param select the location change is a selection operation. | |
| 2553 * include the line delimiter in the selection | |
| 2554 */ | |
| 2555 void doMouseLocationChange(int x, int y, bool select) { | |
| 2556 int line = getLineIndex(y); | |
| 2557 | |
| 2558 updateCaretDirection = true; | |
| 2559 // allow caret to be placed below first line only if receiver is | |
| 2560 // not in single line mode. fixes 4820. | |
| 2561 if (line < 0 || (isSingleLine() && line > 0)) { | |
| 2562 return; | |
| 2563 } | |
| 2564 int oldCaretAlignment = caretAlignment; | |
| 2565 int newCaretOffset = getOffsetAtPoint(x, y); | |
| 2566 | |
| 2567 if (doubleClickEnabled && clickCount > 1) { | |
| 2568 newCaretOffset = doMouseWordSelect(x, newCaretOffset, line); | |
| 2569 } | |
| 2570 | |
| 2571 int newCaretLine = content.getLineAtOffset(newCaretOffset); | |
| 2572 | |
| 2573 // Is the mouse within the left client area border or on | |
| 2574 // a different line? If not the autoscroll selection | |
| 2575 // could be incorrectly reset. Fixes 1GKM3XS | |
| 2576 if (0 <= y && y < clientAreaHeight && | |
| 2577 (0 <= x && x < clientAreaWidth || wordWrap || | |
| 2578 newCaretLine !is content.getLineAtOffset(caretOffset))) { | |
| 2579 if (newCaretOffset !is caretOffset || caretAlignment !is oldCaretAlignment) { | |
| 2580 caretOffset = newCaretOffset; | |
| 2581 if (select) doMouseSelection(); | |
| 2582 showCaret(); | |
| 2583 } | |
| 2584 } | |
| 2585 if (!select) { | |
| 2586 caretOffset = newCaretOffset; | |
| 2587 clearSelection(true); | |
| 2588 } | |
| 2589 } | |
| 2590 /** | |
| 2591 * Updates the selection based on the caret position | |
| 2592 */ | |
| 2593 void doMouseSelection() { | |
| 2594 if (caretOffset <= selection.x || | |
| 2595 (caretOffset > selection.x && | |
| 2596 caretOffset < selection.y && selectionAnchor is selection.x)) { | |
| 2597 doSelection(ST.COLUMN_PREVIOUS); | |
| 2598 } else { | |
| 2599 doSelection(ST.COLUMN_NEXT); | |
| 2600 } | |
| 2601 } | |
| 2602 /** | |
| 2603 * Returns the offset of the word at the specified offset. | |
| 2604 * If the current selection extends from high index to low index | |
| 2605 * (i.e., right to left, or caret is at left border of selection on | |
| 2606 * non-bidi platforms) the start offset of the word preceding the | |
| 2607 * selection is returned. If the current selection extends from | |
| 2608 * low index to high index the end offset of the word following | |
| 2609 * the selection is returned. | |
| 2610 * | |
| 2611 * @param x mouse x location | |
| 2612 * @param newCaretOffset caret offset of the mouse cursor location | |
| 2613 * @param line line index of the mouse cursor location | |
| 2614 */ | |
| 2615 int doMouseWordSelect(int x, int newCaretOffset, int line) { | |
| 2616 // flip selection anchor based on word selection direction from | |
| 2617 // base double click. Always do this here (and don't rely on doAutoScroll) | |
| 2618 // because auto scroll only does not cover all possible mouse selections | |
| 2619 // (e.g., mouse x < 0 && mouse y > caret line y) | |
| 2620 if (newCaretOffset < selectionAnchor && selectionAnchor is selection.x) { | |
| 2621 selectionAnchor = doubleClickSelection.y; | |
| 2622 } else if (newCaretOffset > selectionAnchor && selectionAnchor is selection.y) { | |
| 2623 selectionAnchor = doubleClickSelection.x; | |
| 2624 } | |
| 2625 if (0 <= x && x < clientAreaWidth) { | |
| 2626 bool wordSelect = (clickCount & 1) is 0; | |
| 2627 if (caretOffset is selection.x) { | |
| 2628 if (wordSelect) { | |
| 2629 newCaretOffset = getWordPrevious(newCaretOffset, SWT.MOVEMENT_WORD_START); | |
| 2630 } else { | |
| 2631 newCaretOffset = content.getOffsetAtLine(line); | |
| 2632 } | |
| 2633 } else { | |
| 2634 if (wordSelect) { | |
| 2635 newCaretOffset = getWordNext(newCaretOffset, SWT.MOVEMENT_WORD_END); | |
| 2636 } else { | |
| 2637 int lineEnd = content.getCharCount(); | |
| 2638 if (line + 1 < content.getLineCount()) { | |
| 2639 lineEnd = content.getOffsetAtLine(line + 1); | |
| 2640 } | |
| 2641 newCaretOffset = lineEnd; | |
| 2642 } | |
| 2643 } | |
| 2644 } | |
| 2645 return newCaretOffset; | |
| 2646 } | |
| 2647 /** | |
| 2648 * Scrolls one page down so that the last line (truncated or whole) | |
| 2649 * of the current page becomes the fully visible top line. | |
| 2650 * <p> | |
| 2651 * The caret is scrolled the same number of lines so that its location | |
| 2652 * relative to the top line remains the same. The exception is the end | |
| 2653 * of the text where a full page scroll is not possible. In this case | |
| 2654 * the caret is moved after the last character. | |
| 2655 * </p> | |
| 2656 * | |
| 2657 * @param select whether or not to select the page | |
| 2658 */ | |
| 2659 void doPageDown(bool select, int height) { | |
| 2660 if (isSingleLine()) return; | |
| 2661 int oldColumnX = columnX; | |
| 2662 int oldHScrollOffset = horizontalScrollOffset; | |
| 2663 if (isFixedLineHeight()) { | |
| 2664 int lineCount = content.getLineCount(); | |
| 2665 int caretLine = getCaretLine(); | |
| 2666 if (caretLine < lineCount - 1) { | |
| 2667 int lineHeight = renderer.getLineHeight(); | |
| 2668 int lines = (height is -1 ? clientAreaHeight : height) / lineHeight; | |
| 2669 int scrollLines = Math.min(lineCount - caretLine - 1, lines); | |
| 2670 // ensure that scrollLines never gets negative and at least one | |
| 2671 // line is scrolled. fixes bug 5602. | |
| 2672 scrollLines = Math.max(1, scrollLines); | |
| 2673 caretOffset = getOffsetAtPoint(columnX, getLinePixel(caretLine + scrollLines)); | |
| 2674 if (select) { | |
| 2675 doSelection(ST.COLUMN_NEXT); | |
| 2676 } | |
| 2677 // scroll one page down or to the bottom | |
| 2678 int verticalMaximum = lineCount * getVerticalIncrement(); | |
| 2679 int pageSize = clientAreaHeight; | |
| 2680 int verticalScrollOffset = getVerticalScrollOffset(); | |
| 2681 int scrollOffset = verticalScrollOffset + scrollLines * getVerticalIncrement(); | |
| 2682 if (scrollOffset + pageSize > verticalMaximum) { | |
| 2683 scrollOffset = verticalMaximum - pageSize; | |
| 2684 } | |
| 2685 if (scrollOffset > verticalScrollOffset) { | |
| 2686 scrollVertical(scrollOffset - verticalScrollOffset, true); | |
| 2687 } | |
| 2688 } | |
| 2689 } else { | |
| 2690 int lineCount = content.getLineCount(); | |
| 2691 int caretLine = getCaretLine(); | |
| 2692 int lineIndex, lineHeight; | |
| 2693 if (height is -1) { | |
| 2694 lineIndex = getPartialBottomIndex(); | |
| 2695 int topY = getLinePixel(lineIndex); | |
| 2696 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2697 height = topY; | |
| 2698 if (topY + lineHeight <= clientAreaHeight) { | |
| 2699 height += lineHeight; | |
| 2700 } else { | |
| 2701 if (wordWrap) { | |
| 2702 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2703 int y = clientAreaHeight - topY; | |
| 2704 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2705 Rectangle bounds = layout.getLineBounds(i); | |
| 2706 if (bounds.contains(bounds.x, y)) { | |
| 2707 height += bounds.y; | |
| 2708 break; | |
| 2709 } | |
| 2710 } | |
| 2711 renderer.disposeTextLayout(layout); | |
| 2712 } | |
| 2713 } | |
| 2714 } else { | |
| 2715 lineIndex = getLineIndex(height); | |
| 2716 int topLineY = getLinePixel(lineIndex); | |
| 2717 if (wordWrap) { | |
| 2718 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2719 int y = height - topLineY; | |
| 2720 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2721 Rectangle bounds = layout.getLineBounds(i); | |
| 2722 if (bounds.contains(bounds.x, y)) { | |
| 2723 height = topLineY + bounds.y + bounds.height; | |
| 2724 break; | |
| 2725 } | |
| 2726 } | |
| 2727 renderer.disposeTextLayout(layout); | |
| 2728 } else { | |
| 2729 height = topLineY + renderer.getLineHeight(lineIndex); | |
| 2730 } | |
| 2731 } | |
| 2732 int caretHeight = height; | |
| 2733 if (wordWrap) { | |
| 2734 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2735 int offsetInLine = caretOffset - content.getOffsetAtLine(caretLine); | |
| 2736 lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2737 caretHeight += layout.getLineBounds(lineIndex).y; | |
| 2738 renderer.disposeTextLayout(layout); | |
| 2739 } | |
| 2740 lineIndex = caretLine; | |
| 2741 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2742 while (caretHeight - lineHeight >= 0 && lineIndex < lineCount - 1) { | |
| 2743 caretHeight -= lineHeight; | |
| 2744 lineHeight = renderer.getLineHeight(++lineIndex); | |
| 2745 } | |
| 2746 caretOffset = getOffsetAtPoint(columnX, caretHeight, lineIndex); | |
| 2747 if (select) doSelection(ST.COLUMN_NEXT); | |
| 2748 height = getAvailableHeightBellow(height); | |
| 2749 scrollVertical(height, true); | |
| 2750 if (height is 0) setCaretLocation(); | |
| 2751 } | |
| 2752 showCaret(); | |
| 2753 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2754 columnX = oldColumnX + hScrollChange; | |
| 2755 } | |
| 2756 /** | |
| 2757 * Moves the cursor to the end of the last fully visible line. | |
| 2758 */ | |
| 2759 void doPageEnd() { | |
| 2760 // go to end of line if in single line mode. fixes 5673 | |
| 2761 if (isSingleLine()) { | |
| 2762 doLineEnd(); | |
| 2763 } else { | |
| 2764 int bottomOffset; | |
| 2765 if (wordWrap) { | |
| 2766 int lineIndex = getPartialBottomIndex(); | |
| 2767 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2768 int y = (clientAreaHeight - bottomMargin) - getLinePixel(lineIndex); | |
| 2769 int index = layout.getLineCount() - 1; | |
| 2770 while (index >= 0) { | |
| 2771 Rectangle bounds = layout.getLineBounds(index); | |
| 2772 if (y >= bounds.y + bounds.height) break; | |
| 2773 index--; | |
| 2774 } | |
| 2775 if (index is -1 && lineIndex > 0) { | |
| 2776 bottomOffset = content.getOffsetAtLine(lineIndex - 1) + content.getLine(lineIndex - 1).length; | |
| 2777 } else { | |
|
120
536e43f63c81
Comprehensive update for Win32/Linux32 dmd-2.053/dmd-1.068+Tango-r5661
Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
113
diff
changeset
|
2778 bottomOffset = content.getOffsetAtLine(lineIndex) + Math.max(0, getPreviousCharOffset(lineIndex, layout.getLineOffsets()[index + 1])); |
| 25 | 2779 } |
| 2780 renderer.disposeTextLayout(layout); | |
| 2781 } else { | |
| 2782 int lineIndex = getBottomIndex(); | |
| 2783 bottomOffset = content.getOffsetAtLine(lineIndex) + content.getLine(lineIndex).length; | |
| 2784 } | |
| 2785 if (caretOffset < bottomOffset) { | |
| 2786 caretOffset = bottomOffset; | |
| 2787 caretAlignment = OFFSET_LEADING; | |
| 2788 showCaret(); | |
| 2789 } | |
| 2790 } | |
| 2791 } | |
| 2792 /** | |
| 2793 * Moves the cursor to the beginning of the first fully visible line. | |
| 2794 */ | |
| 2795 void doPageStart() { | |
| 2796 int topOffset; | |
| 2797 if (wordWrap) { | |
| 2798 int y, lineIndex; | |
| 2799 if (topIndexY > 0) { | |
| 2800 lineIndex = topIndex - 1; | |
| 2801 y = renderer.getLineHeight(lineIndex) - topIndexY; | |
| 2802 } else { | |
| 2803 lineIndex = topIndex; | |
| 2804 y = -topIndexY; | |
| 2805 } | |
| 2806 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2807 int index = 0; | |
| 2808 int lineCount = layout.getLineCount(); | |
| 2809 while (index < lineCount) { | |
| 2810 Rectangle bounds = layout.getLineBounds(index); | |
| 2811 if (y <= bounds.y) break; | |
| 2812 index++; | |
| 2813 } | |
| 2814 if (index is lineCount) { | |
| 2815 topOffset = content.getOffsetAtLine(lineIndex + 1); | |
| 2816 } else { | |
| 2817 topOffset = content.getOffsetAtLine(lineIndex) + layout.getLineOffsets()[index]; | |
| 2818 } | |
| 2819 renderer.disposeTextLayout(layout); | |
| 2820 } else { | |
| 2821 topOffset = content.getOffsetAtLine(topIndex); | |
| 2822 } | |
| 2823 if (caretOffset > topOffset) { | |
| 2824 caretOffset = topOffset; | |
| 2825 caretAlignment = OFFSET_LEADING; | |
| 2826 showCaret(); | |
| 2827 } | |
| 2828 } | |
| 2829 /** | |
| 2830 * Scrolls one page up so that the first line (truncated or whole) | |
| 2831 * of the current page becomes the fully visible last line. | |
| 2832 * The caret is scrolled the same number of lines so that its location | |
| 2833 * relative to the top line remains the same. The exception is the beginning | |
| 2834 * of the text where a full page scroll is not possible. In this case the | |
| 2835 * caret is moved in front of the first character. | |
| 2836 */ | |
| 2837 void doPageUp(bool select, int height) { | |
| 2838 if (isSingleLine()) return; | |
| 2839 int oldHScrollOffset = horizontalScrollOffset; | |
| 2840 int oldColumnX = columnX; | |
| 2841 if (isFixedLineHeight()) { | |
| 2842 int caretLine = getCaretLine(); | |
| 2843 if (caretLine > 0) { | |
| 2844 int lineHeight = renderer.getLineHeight(); | |
| 2845 int lines = (height is -1 ? clientAreaHeight : height) / lineHeight; | |
| 2846 int scrollLines = Math.max(1, Math.min(caretLine, lines)); | |
| 2847 caretLine -= scrollLines; | |
| 2848 caretOffset = getOffsetAtPoint(columnX, getLinePixel(caretLine)); | |
| 2849 if (select) { | |
| 2850 doSelection(ST.COLUMN_PREVIOUS); | |
| 2851 } | |
| 2852 int verticalScrollOffset = getVerticalScrollOffset(); | |
| 2853 int scrollOffset = Math.max(0, verticalScrollOffset - scrollLines * getVerticalIncrement()); | |
| 2854 if (scrollOffset < verticalScrollOffset) { | |
| 2855 scrollVertical(scrollOffset - verticalScrollOffset, true); | |
| 2856 } | |
| 2857 } | |
| 2858 } else { | |
| 2859 int caretLine = getCaretLine(); | |
| 2860 int lineHeight, lineIndex; | |
| 2861 if (height is -1) { | |
| 2862 if (topIndexY is 0) { | |
| 2863 height = clientAreaHeight; | |
| 2864 } else { | |
| 2865 int y; | |
| 2866 if (topIndex > 0) { | |
| 2867 lineIndex = topIndex - 1; | |
| 2868 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2869 height = clientAreaHeight - topIndexY; | |
| 2870 y = lineHeight - topIndexY; | |
| 2871 } else { | |
| 2872 lineIndex = topIndex; | |
| 2873 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2874 height = clientAreaHeight - (lineHeight + topIndexY); | |
| 2875 y = -topIndexY; | |
| 2876 } | |
| 2877 if (wordWrap) { | |
| 2878 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2879 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2880 Rectangle bounds = layout.getLineBounds(i); | |
| 2881 if (bounds.contains(bounds.x, y)) { | |
| 2882 height += lineHeight - (bounds.y + bounds.height); | |
| 2883 break; | |
| 2884 } | |
| 2885 } | |
| 2886 renderer.disposeTextLayout(layout); | |
| 2887 } | |
| 2888 } | |
| 2889 } else { | |
| 2890 lineIndex = getLineIndex(clientAreaHeight - height); | |
| 2891 int topLineY = getLinePixel(lineIndex); | |
| 2892 if (wordWrap) { | |
| 2893 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2894 int y = topLineY; | |
| 2895 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2896 Rectangle bounds = layout.getLineBounds(i); | |
| 2897 if (bounds.contains(bounds.x, y)) { | |
| 2898 height = clientAreaHeight - (topLineY + bounds.y); | |
| 2899 break; | |
| 2900 } | |
| 2901 } | |
| 2902 renderer.disposeTextLayout(layout); | |
| 2903 } else { | |
| 2904 height = clientAreaHeight - topLineY; | |
| 2905 } | |
| 2906 } | |
| 2907 int caretHeight = height; | |
| 2908 if (wordWrap) { | |
| 2909 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2910 int offsetInLine = caretOffset - content.getOffsetAtLine(caretLine); | |
| 2911 lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2912 caretHeight += layout.getBounds().height - layout.getLineBounds(lineIndex).y; | |
| 2913 renderer.disposeTextLayout(layout); | |
| 2914 } | |
| 2915 lineIndex = caretLine; | |
| 2916 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2917 while (caretHeight - lineHeight >= 0 && lineIndex > 0) { | |
| 2918 caretHeight -= lineHeight; | |
| 2919 lineHeight = renderer.getLineHeight(--lineIndex); | |
| 2920 } | |
| 2921 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2922 caretOffset = getOffsetAtPoint(columnX, lineHeight - caretHeight, lineIndex); | |
| 2923 if (select) doSelection(ST.COLUMN_PREVIOUS); | |
| 2924 height = getAvailableHeightAbove(height); | |
| 2925 scrollVertical(-height, true); | |
| 2926 if (height is 0) setCaretLocation(); | |
| 2927 } | |
| 2928 showCaret(); | |
| 2929 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2930 columnX = oldColumnX + hScrollChange; | |
| 2931 } | |
| 2932 /** | |
| 2933 * Updates the selection to extend to the current caret position. | |
| 2934 */ | |
| 2935 void doSelection(int direction) { | |
| 2936 int redrawStart = -1; | |
| 2937 int redrawEnd = -1; | |
| 2938 if (selectionAnchor is -1) { | |
| 2939 selectionAnchor = selection.x; | |
| 2940 } | |
| 2941 if (direction is ST.COLUMN_PREVIOUS) { | |
| 2942 if (caretOffset < selection.x) { | |
| 2943 // grow selection | |
| 2944 redrawEnd = selection.x; | |
| 2945 redrawStart = selection.x = caretOffset; | |
| 2946 // check if selection has reversed direction | |
| 2947 if (selection.y !is selectionAnchor) { | |
| 2948 redrawEnd = selection.y; | |
| 2949 selection.y = selectionAnchor; | |
| 2950 } | |
| 2951 // test whether selection actually changed. Fixes 1G71EO1 | |
| 2952 } else if (selectionAnchor is selection.x && caretOffset < selection.y) { | |
| 2953 // caret moved towards selection anchor (left side of selection). | |
| 2954 // shrink selection | |
| 2955 redrawEnd = selection.y; | |
| 2956 redrawStart = selection.y = caretOffset; | |
| 2957 } | |
| 2958 } else { | |
| 2959 if (caretOffset > selection.y) { | |
| 2960 // grow selection | |
| 2961 redrawStart = selection.y; | |
| 2962 redrawEnd = selection.y = caretOffset; | |
| 2963 // check if selection has reversed direction | |
| 2964 if (selection.x !is selectionAnchor) { | |
| 2965 redrawStart = selection.x; | |
| 2966 selection.x = selectionAnchor; | |
| 2967 } | |
| 2968 // test whether selection actually changed. Fixes 1G71EO1 | |
| 2969 } else if (selectionAnchor is selection.y && caretOffset > selection.x) { | |
| 2970 // caret moved towards selection anchor (right side of selection). | |
| 2971 // shrink selection | |
| 2972 redrawStart = selection.x; | |
| 2973 redrawEnd = selection.x = caretOffset; | |
| 2974 } | |
| 2975 } | |
| 2976 if (redrawStart !is -1 && redrawEnd !is -1) { | |
| 2977 internalRedrawRange(redrawStart, redrawEnd - redrawStart); | |
| 2978 sendSelectionEvent(); | |
| 2979 } | |
| 2980 } | |
| 2981 /** | |
| 2982 * Moves the caret to the next character or to the beginning of the | |
| 2983 * next line if the cursor is at the end of a line. | |
| 2984 */ | |
| 2985 void doSelectionCursorNext() { | |
| 2986 int caretLine = getCaretLine(); | |
| 2987 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2988 int offsetInLine = caretOffset - lineOffset; | |
| 2989 if (offsetInLine < content.getLine(caretLine).length) { | |
| 2990 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2991 offsetInLine = layout.getNextOffset(offsetInLine, SWT.MOVEMENT_CLUSTER); | |
| 2992 int lineStart = layout.getLineOffsets()[layout.getLineIndex(offsetInLine)]; | |
| 2993 renderer.disposeTextLayout(layout); | |
| 2994 caretOffset = offsetInLine + lineOffset; | |
| 2995 caretAlignment = offsetInLine is lineStart ? OFFSET_LEADING : PREVIOUS_OFFSET_TRAILING; | |
| 2996 showCaret(); | |
| 2997 } else if (caretLine < content.getLineCount() - 1 && !isSingleLine()) { | |
| 2998 caretLine++; | |
| 2999 caretOffset = content.getOffsetAtLine(caretLine); | |
| 3000 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 3001 showCaret(); | |
| 3002 } | |
| 3003 } | |
| 3004 /** | |
| 3005 * Moves the caret to the previous character or to the end of the previous | |
| 3006 * line if the cursor is at the beginning of a line. | |
| 3007 */ | |
| 3008 void doSelectionCursorPrevious() { | |
| 3009 int caretLine = getCaretLine(); | |
| 3010 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 3011 int offsetInLine = caretOffset - lineOffset; | |
| 3012 caretAlignment = OFFSET_LEADING; | |
| 3013 | |
| 3014 if (offsetInLine > 0) { | |
| 3015 caretOffset = getClusterPrevious(caretOffset, caretLine); | |
| 3016 showCaret(); | |
| 3017 } else if (caretLine > 0) { | |
| 3018 caretLine--; | |
| 3019 lineOffset = content.getOffsetAtLine(caretLine); | |
| 3020 caretOffset = lineOffset + content.getLine(caretLine).length; | |
| 3021 showCaret(); | |
| 3022 } | |
| 3023 } | |
| 3024 /** | |
| 3025 * Moves the caret one line down and to the same character offset relative | |
| 3026 * to the beginning of the line. Moves the caret to the end of the new line | |
| 3027 * if the new line is shorter than the character offset. | |
| 3028 * Moves the caret to the end of the text if the caret already is on the | |
| 3029 * last line. | |
| 3030 * Adjusts the selection according to the caret change. This can either add | |
| 3031 * to or subtract from the old selection, depending on the previous selection | |
| 3032 * direction. | |
| 3033 */ | |
| 3034 void doSelectionLineDown() { | |
| 3035 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3036 doLineDown(true); | |
| 3037 columnX = oldColumnX; | |
| 3038 } | |
| 3039 /** | |
| 3040 * Moves the caret one line up and to the same character offset relative | |
| 3041 * to the beginning of the line. Moves the caret to the end of the new line | |
| 3042 * if the new line is shorter than the character offset. | |
| 3043 * Moves the caret to the beginning of the document if it is already on the | |
| 3044 * first line. | |
| 3045 * Adjusts the selection according to the caret change. This can either add | |
| 3046 * to or subtract from the old selection, depending on the previous selection | |
| 3047 * direction. | |
| 3048 */ | |
| 3049 void doSelectionLineUp() { | |
| 3050 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3051 doLineUp(true); | |
| 3052 columnX = oldColumnX; | |
| 3053 } | |
| 3054 /** | |
| 3055 * Scrolls one page down so that the last line (truncated or whole) | |
| 3056 * of the current page becomes the fully visible top line. | |
| 3057 * <p> | |
| 3058 * The caret is scrolled the same number of lines so that its location | |
| 3059 * relative to the top line remains the same. The exception is the end | |
| 3060 * of the text where a full page scroll is not possible. In this case | |
| 3061 * the caret is moved after the last character. | |
| 3062 * <p></p> | |
| 3063 * Adjusts the selection according to the caret change. This can either add | |
| 3064 * to or subtract from the old selection, depending on the previous selection | |
| 3065 * direction. | |
| 3066 * </p> | |
| 3067 */ | |
| 3068 void doSelectionPageDown(int pixels) { | |
| 3069 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3070 doPageDown(true, pixels); | |
| 3071 columnX = oldColumnX; | |
| 3072 } | |
| 3073 /** | |
| 3074 * Scrolls one page up so that the first line (truncated or whole) | |
| 3075 * of the current page becomes the fully visible last line. | |
| 3076 * <p> | |
| 3077 * The caret is scrolled the same number of lines so that its location | |
| 3078 * relative to the top line remains the same. The exception is the beginning | |
| 3079 * of the text where a full page scroll is not possible. In this case the | |
| 3080 * caret is moved in front of the first character. | |
| 3081 * </p><p> | |
| 3082 * Adjusts the selection according to the caret change. This can either add | |
| 3083 * to or subtract from the old selection, depending on the previous selection | |
| 3084 * direction. | |
| 3085 * </p> | |
| 3086 */ | |
| 3087 void doSelectionPageUp(int pixels) { | |
| 3088 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3089 doPageUp(true, pixels); | |
| 3090 columnX = oldColumnX; | |
| 3091 } | |
| 3092 /** | |
| 3093 * Moves the caret to the end of the next word . | |
| 3094 */ | |
| 3095 void doSelectionWordNext() { | |
| 3096 int newCaretOffset = getWordNext(caretOffset, SWT.MOVEMENT_WORD); | |
| 3097 // Force symmetrical movement for word next and previous. Fixes 14536 | |
| 3098 caretAlignment = OFFSET_LEADING; | |
| 3099 // don't change caret position if in single line mode and the cursor | |
| 3100 // would be on a different line. fixes 5673 | |
| 3101 if (!isSingleLine() || | |
| 3102 content.getLineAtOffset(caretOffset) is content.getLineAtOffset(newCaretOffset)) { | |
| 3103 caretOffset = newCaretOffset; | |
| 3104 showCaret(); | |
| 3105 } | |
| 3106 } | |
| 3107 /** | |
| 3108 * Moves the caret to the start of the previous word. | |
| 3109 */ | |
| 3110 void doSelectionWordPrevious() { | |
| 3111 caretAlignment = OFFSET_LEADING; | |
| 3112 caretOffset = getWordPrevious(caretOffset, SWT.MOVEMENT_WORD); | |
| 3113 int caretLine = content.getLineAtOffset(caretOffset); | |
| 3114 // word previous always comes from bottom line. when | |
| 3115 // wrapping lines, stay on bottom line when on line boundary | |
| 3116 if (wordWrap && caretLine < content.getLineCount() - 1 && | |
| 3117 caretOffset is content.getOffsetAtLine(caretLine + 1)) { | |
| 3118 caretLine++; | |
| 3119 } | |
| 3120 showCaret(); | |
| 3121 } | |
| 3122 /** | |
| 3123 * Moves the caret one character to the left. Do not go to the previous line. | |
| 3124 * When in a bidi locale and at a R2L character the caret is moved to the | |
| 3125 * beginning of the R2L segment (visually right) and then one character to the | |
| 3126 * left (visually left because it's now in a L2R segment). | |
| 3127 */ | |
| 3128 void doVisualPrevious() { | |
| 3129 caretOffset = getClusterPrevious(caretOffset, getCaretLine()); | |
| 3130 showCaret(); | |
| 3131 } | |
| 3132 /** | |
| 3133 * Moves the caret one character to the right. Do not go to the next line. | |
| 3134 * When in a bidi locale and at a R2L character the caret is moved to the | |
| 3135 * end of the R2L segment (visually left) and then one character to the | |
| 3136 * right (visually right because it's now in a L2R segment). | |
| 3137 */ | |
| 3138 void doVisualNext() { | |
| 3139 caretOffset = getClusterNext(caretOffset, getCaretLine()); | |
| 3140 showCaret(); | |
| 3141 } | |
| 3142 /** | |
| 3143 * Moves the caret to the end of the next word. | |
| 3144 * If a selection exists, move the caret to the end of the selection | |
| 3145 * and remove the selection. | |
| 3146 */ | |
| 3147 void doWordNext() { | |
| 3148 if (selection.y - selection.x > 0) { | |
| 3149 caretOffset = selection.y; | |
| 3150 showCaret(); | |
| 3151 } else { | |
| 3152 doSelectionWordNext(); | |
| 3153 } | |
| 3154 } | |
| 3155 /** | |
| 3156 * Moves the caret to the start of the previous word. | |
| 3157 * If a selection exists, move the caret to the start of the selection | |
| 3158 * and remove the selection. | |
| 3159 */ | |
| 3160 void doWordPrevious() { | |
| 3161 if (selection.y - selection.x > 0) { | |
| 3162 caretOffset = selection.x; | |
| 3163 showCaret(); | |
| 3164 } else { | |
| 3165 doSelectionWordPrevious(); | |
| 3166 } | |
| 3167 } | |
| 3168 /** | |
| 3169 * Ends the autoscroll process. | |
| 3170 */ | |
| 3171 void endAutoScroll() { | |
| 3172 autoScrollDirection = SWT.NULL; | |
| 3173 } | |
| 3174 public override Color getBackground() { | |
| 3175 checkWidget(); | |
| 3176 if (background is null) { | |
| 3177 return getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND); | |
| 3178 } | |
| 3179 return background; | |
| 3180 } | |
| 3181 /** | |
| 3182 * Returns the baseline, in pixels. | |
| 3183 * | |
| 3184 * Note: this API should not be used if a StyleRange attribute causes lines to | |
| 3185 * have different heights (i.e. different fonts, rise, etc). | |
| 3186 * | |
| 3187 * @return baseline the baseline | |
| 3188 * @exception SWTException <ul> | |
| 3189 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3190 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3191 * </ul> | |
| 3192 * @since 3.0 | |
| 3193 * | |
| 3194 * @see #getBaseline(int) | |
| 3195 */ | |
| 3196 public int getBaseline() { | |
| 3197 checkWidget(); | |
| 3198 return renderer.getBaseline(); | |
| 3199 } | |
| 3200 /** | |
| 3201 * Returns the baseline at the given offset, in pixels. | |
| 3202 * | |
| 3203 * @param offset the offset | |
| 3204 * | |
| 3205 * @return baseline the baseline | |
| 3206 * | |
| 3207 * @exception SWTException <ul> | |
| 3208 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3209 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3210 * </ul> | |
| 3211 * @exception IllegalArgumentException <ul> | |
| 3212 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3213 * </ul> | |
| 3214 * | |
| 3215 * @since 3.2 | |
| 3216 */ | |
| 3217 public int getBaseline(int offset) { | |
| 3218 checkWidget(); | |
| 3219 if (!(0 <= offset && offset <= content.getCharCount())) { | |
| 3220 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 3221 } | |
| 3222 if (isFixedLineHeight()) { | |
| 3223 return renderer.getBaseline(); | |
| 3224 } | |
| 3225 int lineIndex = content.getLineAtOffset(offset); | |
| 3226 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3227 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3228 int lineInParagraph = layout.getLineIndex(Math.min(offset - lineOffset, layout.getText().length)); | |
| 3229 FontMetrics metrics = layout.getLineMetrics(lineInParagraph); | |
| 3230 renderer.disposeTextLayout(layout); | |
| 3231 return metrics.getAscent() + metrics.getLeading(); | |
| 3232 } | |
| 3233 /** | |
| 3234 * Gets the BIDI coloring mode. When true the BIDI text display | |
| 3235 * algorithm is applied to segments of text that are the same | |
| 3236 * color. | |
| 3237 * | |
| 3238 * @return the current coloring mode | |
| 3239 * @exception SWTException <ul> | |
| 3240 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3241 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3242 * </ul> | |
| 3243 * | |
| 3244 * @deprecated use BidiSegmentListener instead. | |
| 3245 */ | |
| 3246 public bool getBidiColoring() { | |
| 3247 checkWidget(); | |
| 3248 return bidiColoring; | |
| 3249 } | |
| 3250 /** | |
| 3251 * Returns the index of the last fully visible line. | |
| 3252 * | |
| 3253 * @return index of the last fully visible line. | |
| 3254 */ | |
| 3255 int getBottomIndex() { | |
| 3256 int bottomIndex; | |
| 3257 if (isFixedLineHeight()) { | |
| 3258 int lineCount = 1; | |
| 3259 int lineHeight = renderer.getLineHeight(); | |
| 3260 if (lineHeight !is 0) { | |
| 3261 // calculate the number of lines that are fully visible | |
| 3262 int partialTopLineHeight = topIndex * lineHeight - getVerticalScrollOffset(); | |
| 3263 lineCount = (clientAreaHeight - partialTopLineHeight) / lineHeight; | |
| 3264 } | |
| 3265 bottomIndex = Math.min(content.getLineCount() - 1, topIndex + Math.max(0, lineCount - 1)); | |
| 3266 } else { | |
| 3267 int clientAreaHeight = this.clientAreaHeight - bottomMargin; | |
| 3268 bottomIndex = getLineIndex(clientAreaHeight); | |
| 3269 if (bottomIndex > 0) { | |
| 3270 int linePixel = getLinePixel(bottomIndex); | |
| 3271 int lineHeight = renderer.getLineHeight(bottomIndex); | |
| 3272 if (linePixel + lineHeight > clientAreaHeight) { | |
| 3273 if (getLinePixel(bottomIndex - 1) >= topMargin) { | |
| 3274 bottomIndex--; | |
| 3275 } | |
| 3276 } | |
| 3277 } | |
| 3278 } | |
| 3279 return bottomIndex; | |
| 3280 } | |
| 3281 Rectangle getBoundsAtOffset(int offset) { | |
| 3282 int lineIndex = content.getLineAtOffset(offset); | |
| 3283 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3284 String line = content.getLine(lineIndex); | |
| 3285 Rectangle bounds; | |
| 3286 if (line.length !is 0) { | |
| 3287 int offsetInLine = offset - lineOffset; | |
| 3288 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3289 bounds = layout.getBounds(offsetInLine, offsetInLine); | |
| 3290 renderer.disposeTextLayout(layout); | |
| 3291 } else { | |
| 3292 bounds = new Rectangle (0, 0, 0, renderer.getLineHeight()); | |
| 3293 } | |
| 3294 if (offset is caretOffset) { | |
| 3295 int lineEnd = lineOffset + line.length; | |
| 3296 if (offset is lineEnd && caretAlignment is PREVIOUS_OFFSET_TRAILING) { | |
| 3297 bounds.width += getCaretWidth(); | |
| 3298 } | |
| 3299 } | |
| 3300 bounds.x += leftMargin - horizontalScrollOffset; | |
| 3301 bounds.y += getLinePixel(lineIndex); | |
| 3302 return bounds; | |
| 3303 } | |
| 3304 /** | |
| 3305 * Returns the caret position relative to the start of the text. | |
| 3306 * | |
| 3307 * @return the caret position relative to the start of the text. | |
| 3308 * @exception SWTException <ul> | |
| 3309 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3310 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3311 * </ul> | |
| 3312 */ | |
| 3313 public int getCaretOffset() { | |
| 3314 checkWidget(); | |
| 3315 return caretOffset; | |
| 3316 } | |
| 3317 /** | |
| 3318 * Returns the caret width. | |
| 3319 * | |
| 3320 * @return the caret width, 0 if caret is null. | |
| 3321 */ | |
| 3322 int getCaretWidth() { | |
| 3323 Caret caret = getCaret(); | |
| 3324 if (caret is null) return 0; | |
| 3325 return caret.getSize().x; | |
| 3326 } | |
| 3327 Object getClipboardContent(int clipboardType) { | |
| 3328 TextTransfer plainTextTransfer = TextTransfer.getInstance(); | |
| 3329 return clipboard.getContents(plainTextTransfer, clipboardType); | |
| 3330 } | |
| 3331 int getClusterNext(int offset, int lineIndex) { | |
| 3332 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3333 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3334 offset -= lineOffset; | |
| 3335 offset = layout.getNextOffset(offset, SWT.MOVEMENT_CLUSTER); | |
| 3336 offset += lineOffset; | |
| 3337 renderer.disposeTextLayout(layout); | |
| 3338 return offset; | |
| 3339 } | |
| 3340 int getClusterPrevious(int offset, int lineIndex) { | |
| 3341 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3342 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3343 offset -= lineOffset; | |
| 3344 offset = layout.getPreviousOffset(offset, SWT.MOVEMENT_CLUSTER); | |
| 3345 offset += lineOffset; | |
| 3346 renderer.disposeTextLayout(layout); | |
| 3347 return offset; | |
| 3348 } | |
| 3349 /** | |
| 3350 * Returns the content implementation that is used for text storage. | |
| 3351 * | |
| 3352 * @return content the user defined content implementation that is used for | |
| 3353 * text storage or the default content implementation if no user defined | |
| 3354 * content implementation has been set. | |
| 3355 * @exception SWTException <ul> | |
| 3356 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3357 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3358 * </ul> | |
| 3359 */ | |
| 3360 public StyledTextContent getContent() { | |
| 3361 checkWidget(); | |
| 3362 return content; | |
| 3363 } | |
| 3364 public override bool getDragDetect () { | |
| 3365 checkWidget (); | |
| 3366 return dragDetect_; | |
| 3367 } | |
| 3368 /** | |
| 3369 * Returns whether the widget implements double click mouse behavior. | |
| 3370 * | |
| 3371 * @return true if double clicking a word selects the word, false if double clicks | |
| 3372 * have the same effect as regular mouse clicks | |
| 3373 * @exception SWTException <ul> | |
| 3374 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3375 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3376 * </ul> | |
| 3377 */ | |
| 3378 public bool getDoubleClickEnabled() { | |
| 3379 checkWidget(); | |
| 3380 return doubleClickEnabled; | |
| 3381 } | |
| 3382 /** | |
| 3383 * Returns whether the widget content can be edited. | |
| 3384 * | |
| 3385 * @return true if content can be edited, false otherwise | |
| 3386 * @exception SWTException <ul> | |
| 3387 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3388 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3389 * </ul> | |
| 3390 */ | |
| 3391 public bool getEditable() { | |
| 3392 checkWidget(); | |
| 3393 return editable; | |
| 3394 } | |
| 3395 public override Color getForeground() { | |
| 3396 checkWidget(); | |
| 3397 if (foreground is null) { | |
| 3398 return getDisplay().getSystemColor(SWT.COLOR_LIST_FOREGROUND); | |
| 3399 } | |
| 3400 return foreground; | |
| 3401 } | |
| 3402 /** | |
| 3403 * Returns the horizontal scroll increment. | |
| 3404 * | |
| 3405 * @return horizontal scroll increment. | |
| 3406 */ | |
| 3407 int getHorizontalIncrement() { | |
| 3408 return renderer.averageCharWidth; | |
| 3409 } | |
| 3410 /** | |
| 3411 * Returns the horizontal scroll offset relative to the start of the line. | |
| 3412 * | |
| 3413 * @return horizontal scroll offset relative to the start of the line, | |
| 3414 * measured in character increments starting at 0, if > 0 the content is scrolled | |
| 3415 * @exception SWTException <ul> | |
| 3416 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3417 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3418 * </ul> | |
| 3419 */ | |
| 3420 public int getHorizontalIndex() { | |
| 3421 checkWidget(); | |
| 3422 return horizontalScrollOffset / getHorizontalIncrement(); | |
| 3423 } | |
| 3424 /** | |
| 3425 * Returns the horizontal scroll offset relative to the start of the line. | |
| 3426 * | |
| 3427 * @return the horizontal scroll offset relative to the start of the line, | |
| 3428 * measured in pixel starting at 0, if > 0 the content is scrolled. | |
| 3429 * @exception SWTException <ul> | |
| 3430 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3431 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3432 * </ul> | |
| 3433 */ | |
| 3434 public int getHorizontalPixel() { | |
| 3435 checkWidget(); | |
| 3436 return horizontalScrollOffset; | |
| 3437 } | |
| 3438 /** | |
| 3439 * Returns the line indentation of the widget. | |
| 3440 * | |
| 3441 * @return the line indentation | |
| 3442 * | |
| 3443 * @exception SWTException <ul> | |
| 3444 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3445 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3446 * </ul> | |
| 3447 * | |
| 3448 * @see #getLineIndent(int) | |
| 3449 * | |
| 3450 * @since 3.2 | |
| 3451 */ | |
| 3452 public int getIndent() { | |
| 3453 checkWidget(); | |
| 3454 return indent; | |
| 3455 } | |
| 3456 /** | |
| 3457 * Returns whether the widget justifies lines. | |
| 3458 * | |
| 3459 * @return whether lines are justified | |
| 3460 * | |
| 3461 * @exception SWTException <ul> | |
| 3462 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3463 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3464 * </ul> | |
| 3465 * | |
| 3466 * @see #getLineJustify(int) | |
| 3467 * | |
| 3468 * @since 3.2 | |
| 3469 */ | |
| 3470 public bool getJustify() { | |
| 3471 checkWidget(); | |
| 3472 return justify; | |
| 3473 } | |
| 3474 /** | |
| 3475 * Returns the action assigned to the key. | |
| 3476 * Returns SWT.NULL if there is no action associated with the key. | |
| 3477 * | |
| 3478 * @param key a key code defined in SWT.java or a character. | |
| 3479 * Optionally ORd with a state mask. Preferred state masks are one or more of | |
| 3480 * SWT.MOD1, SWT.MOD2, SWT.MOD3, since these masks account for modifier platform | |
| 3481 * differences. However, there may be cases where using the specific state masks | |
| 3482 * (i.e., SWT.CTRL, SWT.SHIFT, SWT.ALT, SWT.COMMAND) makes sense. | |
| 3483 * @return one of the predefined actions defined in ST.java or SWT.NULL | |
| 3484 * if there is no action associated with the key. | |
| 3485 * @exception SWTException <ul> | |
| 3486 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3487 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3488 * </ul> | |
| 3489 */ | |
| 3490 public int getKeyBinding(int key) { | |
| 3491 checkWidget(); | |
| 3492 if( auto p = key in keyActionMap ){ | |
| 3493 return *p; | |
| 3494 } | |
| 3495 return SWT.NULL; | |
| 3496 } | |
| 3497 /** | |
| 3498 * Gets the number of characters. | |
| 3499 * | |
| 3500 * @return number of characters in the widget | |
| 3501 * @exception SWTException <ul> | |
| 3502 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3503 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3504 * </ul> | |
| 3505 */ | |
| 3506 public int getCharCount() { | |
| 3507 checkWidget(); | |
| 3508 return content.getCharCount(); | |
| 3509 } | |
| 3510 /** | |
| 3511 * Returns the line at the given line index without delimiters. | |
| 3512 * Index 0 is the first line of the content. When there are not | |
| 3513 * any lines, getLine(0) is a valid call that answers an empty string. | |
| 3514 * <p> | |
| 3515 * | |
| 3516 * @param lineIndex index of the line to return. | |
| 3517 * @return the line text without delimiters | |
| 3518 * | |
| 3519 * @exception SWTException <ul> | |
| 3520 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3521 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3522 * </ul> | |
| 3523 * @exception IllegalArgumentException <ul> | |
| 3524 * <li>ERROR_INVALID_RANGE when the line index is outside the valid range (< 0 or >= getLineCount())</li> | |
| 3525 * </ul> | |
| 3526 * @since 3.4 | |
| 3527 */ | |
| 3528 public String getLine(int lineIndex) { | |
| 3529 checkWidget(); | |
| 3530 if (lineIndex < 0 || | |
| 3531 (lineIndex > 0 && lineIndex >= content.getLineCount())) { | |
| 3532 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 3533 } | |
| 3534 return content.getLine(lineIndex); | |
| 3535 } | |
| 3536 /** | |
| 3537 * Returns the alignment of the line at the given index. | |
| 3538 * | |
| 3539 * @param index the index of the line | |
| 3540 * | |
| 3541 * @return the line alignment | |
| 3542 * | |
| 3543 * @exception SWTException <ul> | |
| 3544 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3545 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3546 * </ul> | |
| 3547 * @exception IllegalArgumentException <ul> | |
| 3548 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3549 * </ul> | |
| 3550 * | |
| 3551 * @see #getAlignment() | |
| 3552 * | |
| 3553 * @since 3.2 | |
| 3554 */ | |
| 3555 public int getLineAlignment(int index) { | |
| 3556 checkWidget(); | |
| 3557 if (index < 0 || index > content.getLineCount()) { | |
| 3558 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 3559 } | |
| 3560 return renderer.getLineAlignment(index, alignment); | |
| 3561 } | |
| 3562 /** | |
| 3563 * Returns the line at the specified offset in the text | |
| 3564 * where 0 < offset < getCharCount() so that getLineAtOffset(getCharCount()) | |
| 3565 * returns the line of the insert location. | |
| 3566 * | |
| 3567 * @param offset offset relative to the start of the content. | |
| 3568 * 0 <= offset <= getCharCount() | |
| 3569 * @return line at the specified offset in the text | |
| 3570 * @exception SWTException <ul> | |
| 3571 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3572 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3573 * </ul> | |
| 3574 * @exception IllegalArgumentException <ul> | |
| 3575 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3576 * </ul> | |
| 3577 */ | |
| 3578 public int getLineAtOffset(int offset) { | |
| 3579 checkWidget(); | |
| 3580 if (offset < 0 || offset > getCharCount()) { | |
| 3581 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 3582 } | |
| 3583 return content.getLineAtOffset(offset); | |
| 3584 } | |
| 3585 /** | |
| 3586 * Returns the background color of the line at the given index. | |
| 3587 * Returns null if a LineBackgroundListener has been set or if no background | |
| 3588 * color has been specified for the line. Should not be called if a | |
| 3589 * LineBackgroundListener has been set since the listener maintains the | |
| 3590 * line background colors. | |
| 3591 * | |
| 3592 * @param index the index of the line | |
| 3593 * @return the background color of the line at the given index. | |
| 3594 * | |
| 3595 * @exception SWTException <ul> | |
| 3596 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3597 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3598 * </ul> | |
| 3599 * @exception IllegalArgumentException <ul> | |
| 3600 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3601 * </ul> | |
| 3602 */ | |
| 3603 public Color getLineBackground(int index) { | |
| 3604 checkWidget(); | |
| 3605 if (index < 0 || index > content.getLineCount()) { | |
| 3606 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 3607 } | |
| 3608 return isListening(LineGetBackground) ? null : renderer.getLineBackground(index, null); | |
| 3609 } | |
| 3610 /** | |
| 3611 * Returns the bullet of the line at the given index. | |
| 3612 * | |
| 3613 * @param index the index of the line | |
| 3614 * | |
| 3615 * @return the line bullet | |
| 3616 * | |
| 3617 * @exception SWTException <ul> | |
| 3618 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3619 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3620 * </ul> | |
| 3621 * @exception IllegalArgumentException <ul> | |
| 3622 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3623 * </ul> | |
| 3624 * | |
| 3625 * @since 3.2 | |
| 3626 */ | |
| 3627 public Bullet getLineBullet(int index) { | |
| 3628 checkWidget(); | |
| 3629 if (index < 0 || index > content.getLineCount()) { | |
| 3630 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 3631 } | |
| 3632 return isListening(LineGetStyle) ? null : renderer.getLineBullet(index, null); | |
| 3633 } | |
| 3634 /** | |
| 3635 * Returns the line background data for the given line or null if | |
| 3636 * there is none. | |
| 3637 * | |
| 3638 * @param lineOffset offset of the line start relative to the start | |
| 3639 * of the content. | |
| 3640 * @param line line to get line background data for | |
| 3641 * @return line background data for the given line. | |
| 3642 */ | |
| 3643 StyledTextEvent getLineBackgroundData(int lineOffset, String line) { | |
| 3644 return sendLineEvent(LineGetBackground, lineOffset, line); | |
| 3645 } | |
| 3646 /** | |
| 3647 * Gets the number of text lines. | |
| 3648 * | |
| 3649 * @return the number of lines in the widget | |
| 3650 * @exception SWTException <ul> | |
| 3651 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3652 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3653 * </ul> | |
| 3654 */ | |
| 3655 public int getLineCount() { | |
| 3656 checkWidget(); | |
| 3657 return content.getLineCount(); | |
| 3658 } | |
| 3659 /** | |
| 3660 * Returns the number of lines that can be completely displayed in the | |
| 3661 * widget client area. | |
| 3662 * | |
| 3663 * @return number of lines that can be completely displayed in the widget | |
| 3664 * client area. | |
| 3665 */ | |
| 3666 int getLineCountWhole() { | |
| 3667 if (isFixedLineHeight()) { | |
| 3668 int lineHeight = renderer.getLineHeight(); | |
| 3669 return lineHeight !is 0 ? clientAreaHeight / lineHeight : 1; | |
| 3670 } | |
| 3671 return getBottomIndex() - topIndex + 1; | |
| 3672 } | |
| 3673 /** | |
| 3674 * Returns the line delimiter used for entering new lines by key down | |
| 3675 * or paste operation. | |
| 3676 * | |
| 3677 * @return line delimiter used for entering new lines by key down | |
| 3678 * or paste operation. | |
| 3679 * @exception SWTException <ul> | |
| 3680 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3681 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3682 * </ul> | |
| 3683 */ | |
| 3684 public String getLineDelimiter() { | |
| 3685 checkWidget(); | |
| 3686 return content.getLineDelimiter(); | |
| 3687 } | |
| 3688 /** | |
| 3689 * Returns the line height. | |
| 3690 * <p> | |
| 3691 * Note: this API should not be used if a StyleRange attribute causes lines to | |
| 3692 * have different heights (i.e. different fonts, rise, etc). | |
| 3693 * </p> | |
| 3694 * | |
| 3695 * @return line height in pixel. | |
| 3696 * @exception SWTException <ul> | |
| 3697 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3698 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3699 * </ul> | |
| 3700 * @see #getLineHeight(int) | |
| 3701 */ | |
| 3702 public int getLineHeight() { | |
| 3703 checkWidget(); | |
| 3704 return renderer.getLineHeight(); | |
| 3705 } | |
| 3706 /** | |
| 3707 * Returns the line height at the given offset. | |
| 3708 * | |
| 3709 * @param offset the offset | |
| 3710 * | |
| 3711 * @return line height in pixels | |
| 3712 * | |
| 3713 * @exception SWTException <ul> | |
| 3714 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3715 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3716 * </ul> | |
| 3717 * @exception IllegalArgumentException <ul> | |
| 3718 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3719 * </ul> | |
| 3720 * | |
| 3721 * @since 3.2 | |
| 3722 */ | |
| 3723 public int getLineHeight(int offset) { | |
| 3724 checkWidget(); | |
| 3725 if (!(0 <= offset && offset <= content.getCharCount())) { | |
| 3726 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 3727 } | |
| 3728 if (isFixedLineHeight()) { | |
| 3729 return renderer.getLineHeight(); | |
| 3730 } | |
| 3731 int lineIndex = content.getLineAtOffset(offset); | |
| 3732 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3733 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3734 int lineInParagraph = layout.getLineIndex(Math.min(offset - lineOffset, layout.getText().length)); | |
| 3735 int height = layout.getLineBounds(lineInParagraph).height; | |
| 3736 renderer.disposeTextLayout(layout); | |
| 3737 return height; | |
| 3738 } | |
| 3739 /** | |
| 3740 * Returns the indentation of the line at the given index. | |
| 3741 * | |
| 3742 * @param index the index of the line | |
| 3743 * | |
| 3744 * @return the line indentation | |
| 3745 * | |
| 3746 * @exception SWTException <ul> | |
| 3747 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3748 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3749 * </ul> | |
| 3750 * @exception IllegalArgumentException <ul> | |
| 3751 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3752 * </ul> | |
| 3753 * | |
| 3754 * @see #getIndent() | |
| 3755 * | |
| 3756 * @since 3.2 | |
| 3757 */ | |
| 3758 public int getLineIndent(int index) { | |
| 3759 checkWidget(); | |
| 3760 if (index < 0 || index > content.getLineCount()) { | |
| 3761 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 3762 } | |
| 3763 return isListening(LineGetStyle) ? 0 : renderer.getLineIndent(index, indent); | |
| 3764 } | |
| 3765 /** | |
| 3766 * Returns whether the line at the given index is justified. | |
| 3767 * | |
| 3768 * @param index the index of the line | |
| 3769 * | |
| 3770 * @return whether the line is justified | |
| 3771 * | |
| 3772 * @exception SWTException <ul> | |
| 3773 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3774 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3775 * </ul> | |
| 3776 * @exception IllegalArgumentException <ul> | |
| 3777 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3778 * </ul> | |
| 3779 * | |
| 3780 * @see #getJustify() | |
| 3781 * | |
| 3782 * @since 3.2 | |
| 3783 */ | |
| 3784 public bool getLineJustify(int index) { | |
| 3785 checkWidget(); | |
| 3786 if (index < 0 || index > content.getLineCount()) { | |
| 3787 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 3788 } | |
| 3789 return isListening(LineGetStyle) ? false : renderer.getLineJustify(index, justify); | |
| 3790 } | |
| 3791 /** | |
| 3792 * Returns the line spacing of the widget. | |
| 3793 * | |
| 3794 * @return the line spacing | |
| 3795 * | |
| 3796 * @exception SWTException <ul> | |
| 3797 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3798 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3799 * </ul> | |
| 3800 * | |
| 3801 * @since 3.2 | |
| 3802 */ | |
| 3803 public int getLineSpacing() { | |
| 3804 checkWidget(); | |
| 3805 return lineSpacing; | |
| 3806 } | |
| 3807 /** | |
| 3808 * Returns the line style data for the given line or null if there is | |
| 3809 * none. | |
| 3810 * <p> | |
| 3811 * If there is a LineStyleListener but it does not set any styles, | |
| 3812 * the StyledTextEvent.styles field will be initialized to an empty | |
| 3813 * array. | |
| 3814 * </p> | |
| 3815 * | |
| 3816 * @param lineOffset offset of the line start relative to the start of | |
| 3817 * the content. | |
| 3818 * @param line line to get line styles for | |
| 3819 * @return line style data for the given line. Styles may start before | |
| 3820 * line start and end after line end | |
| 3821 */ | |
| 3822 StyledTextEvent getLineStyleData(int lineOffset, String line) { | |
| 3823 return sendLineEvent(LineGetStyle, lineOffset, line); | |
| 3824 } | |
| 3825 /** | |
| 3826 * Returns the top pixel, relative to the client area, of a given line. | |
| 3827 * Clamps out of ranges index. | |
| 3828 * | |
| 3829 * @param lineIndex the line index, the max value is lineCount. If | |
| 3830 * lineIndex is lineCount it returns the bottom pixel of the last line. | |
| 3831 * It means this function can be used to retrieve the bottom pixel of any line. | |
| 3832 * | |
| 3833 * @return the top pixel of a given line index | |
| 3834 * | |
| 3835 * @since 3.2 | |
| 3836 */ | |
| 3837 public int getLinePixel(int lineIndex) { | |
| 3838 checkWidget(); | |
| 3839 int lineCount = content.getLineCount(); | |
| 3840 lineIndex = Math.max(0, Math.min(lineCount, lineIndex)); | |
| 3841 if (isFixedLineHeight()) { | |
| 3842 int lineHeight = renderer.getLineHeight(); | |
| 3843 return lineIndex * lineHeight - getVerticalScrollOffset() + topMargin; | |
| 3844 } | |
| 3845 if (lineIndex is topIndex) return topIndexY + topMargin; | |
| 3846 int height = topIndexY; | |
| 3847 if (lineIndex > topIndex) { | |
| 3848 for (int i = topIndex; i < lineIndex; i++) { | |
| 3849 height += renderer.getLineHeight(i); | |
| 3850 } | |
| 3851 } else { | |
| 3852 for (int i = topIndex - 1; i >= lineIndex; i--) { | |
| 3853 height -= renderer.getLineHeight(i); | |
| 3854 } | |
| 3855 } | |
| 3856 return height + topMargin; | |
| 3857 } | |
| 3858 /** | |
| 3859 * Returns the line index for a y, relative to the client area. | |
| 3860 * The line index returned is always in the range 0..lineCount - 1. | |
| 3861 * | |
| 3862 * @param y the y-coordinate pixel | |
| 3863 * | |
| 3864 * @return the line index for a given y-coordinate pixel | |
| 3865 * | |
| 3866 * @since 3.2 | |
| 3867 */ | |
| 3868 public int getLineIndex(int y) { | |
| 3869 checkWidget(); | |
| 3870 y -= topMargin; | |
| 3871 if (isFixedLineHeight()) { | |
| 3872 int lineHeight = renderer.getLineHeight(); | |
| 3873 int lineIndex = (y + getVerticalScrollOffset()) / lineHeight; | |
| 3874 int lineCount = content.getLineCount(); | |
| 3875 lineIndex = Math.max(0, Math.min(lineCount - 1, lineIndex)); | |
| 3876 return lineIndex; | |
| 3877 } | |
| 3878 if (y is topIndexY) return topIndex; | |
| 3879 int line = topIndex; | |
| 3880 if (y < topIndexY) { | |
| 3881 while (y < topIndexY && line > 0) { | |
| 3882 y += renderer.getLineHeight(--line); | |
| 3883 } | |
| 3884 } else { | |
| 3885 int lineCount = content.getLineCount(); | |
| 3886 int lineHeight = renderer.getLineHeight(line); | |
| 3887 while (y - lineHeight >= topIndexY && line < lineCount - 1) { | |
| 3888 y -= lineHeight; | |
| 3889 lineHeight = renderer.getLineHeight(++line); | |
| 3890 } | |
| 3891 } | |
| 3892 return line; | |
| 3893 } | |
| 3894 /** | |
| 3895 * Returns the x, y location of the upper left corner of the character | |
| 3896 * bounding box at the specified offset in the text. The point is | |
| 3897 * relative to the upper left corner of the widget client area. | |
| 3898 * | |
| 3899 * @param offset offset relative to the start of the content. | |
| 3900 * 0 <= offset <= getCharCount() | |
| 3901 * @return x, y location of the upper left corner of the character | |
| 3902 * bounding box at the specified offset in the text. | |
| 3903 * @exception SWTException <ul> | |
| 3904 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3905 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3906 * </ul> | |
| 3907 * @exception IllegalArgumentException <ul> | |
| 3908 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3909 * </ul> | |
| 3910 */ | |
| 3911 public Point getLocationAtOffset(int offset) { | |
| 3912 checkWidget(); | |
| 3913 if (offset < 0 || offset > getCharCount()) { | |
| 3914 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 3915 } | |
| 3916 return getPointAtOffset(offset); | |
| 3917 } | |
| 3918 /** | |
| 3919 * Returns the character offset of the first character of the given line. | |
| 3920 * | |
| 3921 * @param lineIndex index of the line, 0 based relative to the first | |
| 3922 * line in the content. 0 <= lineIndex < getLineCount(), except | |
| 3923 * lineIndex may always be 0 | |
| 3924 * @return offset offset of the first character of the line, relative to | |
| 3925 * the beginning of the document. The first character of the document is | |
| 3926 * at offset 0. | |
| 3927 * When there are not any lines, getOffsetAtLine(0) is a valid call that | |
| 3928 * answers 0. | |
| 3929 * @exception SWTException <ul> | |
| 3930 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3931 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3932 * </ul> | |
| 3933 * @exception IllegalArgumentException <ul> | |
| 3934 * <li>ERROR_INVALID_RANGE when the line index is outside the valid range (< 0 or >= getLineCount())</li> | |
| 3935 * </ul> | |
| 3936 * @since 2.0 | |
| 3937 */ | |
| 3938 public int getOffsetAtLine(int lineIndex) { | |
| 3939 checkWidget(); | |
| 3940 if (lineIndex < 0 || | |
| 3941 (lineIndex > 0 && lineIndex >= content.getLineCount())) { | |
| 3942 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 3943 } | |
| 3944 return content.getOffsetAtLine(lineIndex); | |
| 3945 } | |
| 3946 /** | |
| 3947 * Returns the offset of the character at the given location relative | |
| 3948 * to the first character in the document. | |
| 3949 * <p> | |
| 3950 * The return value reflects the character offset that the caret will | |
| 3951 * be placed at if a mouse click occurred at the specified location. | |
| 3952 * If the x coordinate of the location is beyond the center of a character | |
| 3953 * the returned offset will be behind the character. | |
| 3954 * </p> | |
| 3955 * | |
| 3956 * @param point the origin of character bounding box relative to | |
| 3957 * the origin of the widget client area. | |
| 3958 * @return offset of the character at the given location relative | |
| 3959 * to the first character in the document. | |
| 3960 * @exception SWTException <ul> | |
| 3961 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3962 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3963 * </ul> | |
| 3964 * @exception IllegalArgumentException <ul> | |
| 3965 * <li>ERROR_NULL_ARGUMENT when point is null</li> | |
| 3966 * <li>ERROR_INVALID_ARGUMENT when there is no character at the specified location</li> | |
| 3967 * </ul> | |
| 3968 */ | |
| 3969 public int getOffsetAtLocation(Point point) { | |
| 3970 checkWidget(); | |
| 3971 if (point is null) { | |
| 3972 SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 3973 } | |
|
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|
3974 int[1] trailing; |
| 25 | 3975 int offset = getOffsetAtPoint(point.x, point.y, trailing, true); |
| 3976 if (offset is -1) { | |
| 3977 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 3978 } | |
| 3979 return offset + trailing[0]; | |
| 3980 } | |
| 3981 int getOffsetAtPoint(int x, int y) { | |
| 3982 int lineIndex = getLineIndex(y); | |
| 3983 y -= getLinePixel(lineIndex); | |
| 3984 return getOffsetAtPoint(x, y, lineIndex); | |
| 3985 } | |
| 3986 /** | |
| 3987 * Returns the offset at the specified x location in the specified line. | |
| 3988 * | |
| 3989 * @param x x location of the mouse location | |
| 3990 * @param line line the mouse location is in | |
| 3991 * @return the offset at the specified x location in the specified line, | |
| 3992 * relative to the beginning of the document | |
| 3993 */ | |
| 3994 int getOffsetAtPoint(int x, int y, int lineIndex) { | |
| 3995 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3996 x += horizontalScrollOffset - leftMargin; | |
| 3997 int[1] trailing; | |
| 3998 int offsetInLine = layout.getOffset(x, y, trailing); | |
| 3999 caretAlignment = OFFSET_LEADING; | |
| 4000 if (trailing[0] !is 0) { | |
| 4001 int lineInParagraph = layout.getLineIndex(offsetInLine + trailing[0]); | |
| 4002 int lineStart = layout.getLineOffsets()[lineInParagraph]; | |
| 4003 if (offsetInLine + trailing[0] is lineStart) { | |
| 4004 offsetInLine += trailing[0]; | |
| 4005 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 4006 } else { | |
| 4007 String line = content.getLine(lineIndex); | |
| 4008 int level; | |
| 4009 int offset = offsetInLine; | |
|
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|
4010 while (offset > 0 && Character.isDigit(line.dcharAt(offset))) |
|
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parents:
113
diff
changeset
|
4011 offset = line.offsetBefore(offset); |
| 51 | 4012 if (offset is 0 && Character.isDigit(line.dcharAt(offset))) { |
| 25 | 4013 level = isMirrored() ? 1 : 0; |
| 4014 } else { | |
| 4015 level = layout.getLevel(offset) & 0x1; | |
| 4016 } | |
| 4017 offsetInLine += trailing[0]; | |
| 4018 int trailingLevel = layout.getLevel(offsetInLine) & 0x1; | |
| 4019 if ((level ^ trailingLevel) !is 0) { | |
| 4020 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 4021 } else { | |
| 4022 caretAlignment = OFFSET_LEADING; | |
| 4023 } | |
| 4024 } | |
| 4025 } | |
| 4026 renderer.disposeTextLayout(layout); | |
| 4027 return offsetInLine + content.getOffsetAtLine(lineIndex); | |
| 4028 } | |
| 4029 int getOffsetAtPoint(int x, int y, int[] trailing, bool inTextOnly) { | |
| 4030 if (inTextOnly && y + getVerticalScrollOffset() < 0 || x + horizontalScrollOffset < 0) { | |
| 4031 return -1; | |
| 4032 } | |
| 4033 int bottomIndex = getPartialBottomIndex(); | |
| 4034 int height = getLinePixel(bottomIndex + 1); | |
| 4035 if (inTextOnly && y > height) { | |
| 4036 return -1; | |
| 4037 } | |
| 4038 int lineIndex = getLineIndex(y); | |
| 4039 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4040 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4041 x += horizontalScrollOffset - leftMargin ; | |
| 4042 y -= getLinePixel(lineIndex); | |
| 4043 int offset = layout.getOffset(x, y, trailing); | |
| 4044 Rectangle rect = layout.getLineBounds(layout.getLineIndex(offset)); | |
| 4045 renderer.disposeTextLayout(layout); | |
| 4046 if (inTextOnly && !(rect.x <= x && x <= rect.x + rect.width)) { | |
| 4047 return -1; | |
| 4048 } | |
| 4049 return offset + lineOffset; | |
| 4050 } | |
| 4051 /** | |
| 4052 * Returns the orientation of the receiver. | |
| 4053 * | |
| 4054 * @return the orientation style | |
| 4055 * | |
| 4056 * @exception SWTException <ul> | |
| 4057 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4058 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4059 * </ul> | |
| 4060 * | |
| 4061 * @since 2.1.2 | |
| 4062 */ | |
| 4063 public int getOrientation () { | |
| 4064 checkWidget(); | |
| 4065 return isMirrored() ? SWT.RIGHT_TO_LEFT : SWT.LEFT_TO_RIGHT; | |
| 4066 } | |
| 4067 /** | |
| 4068 * Returns the index of the last partially visible line. | |
| 4069 * | |
| 4070 * @return index of the last partially visible line. | |
| 4071 */ | |
| 4072 int getPartialBottomIndex() { | |
| 4073 if (isFixedLineHeight()) { | |
| 4074 int lineHeight = renderer.getLineHeight(); | |
| 4075 int partialLineCount = Compatibility.ceil(clientAreaHeight, lineHeight); | |
| 4076 return Math.max(0, Math.min(content.getLineCount(), topIndex + partialLineCount) - 1); | |
| 4077 } | |
| 4078 return getLineIndex(clientAreaHeight - bottomMargin); | |
| 4079 } | |
| 4080 /** | |
| 4081 * Returns the index of the first partially visible line. | |
| 4082 * | |
| 4083 * @return index of the first partially visible line. | |
| 4084 */ | |
| 4085 int getPartialTopIndex() { | |
| 4086 if (isFixedLineHeight()) { | |
| 4087 int lineHeight = renderer.getLineHeight(); | |
| 4088 return getVerticalScrollOffset() / lineHeight; | |
| 4089 } | |
| 4090 return topIndexY <= 0 ? topIndex : topIndex - 1; | |
| 4091 } | |
| 4092 /** | |
| 4093 * Returns the content in the specified range using the platform line | |
| 4094 * delimiter to separate lines. | |
| 4095 * | |
| 4096 * @param writer the TextWriter to write line text into | |
| 4097 * @return the content in the specified range using the platform line | |
| 4098 * delimiter to separate lines as written by the specified TextWriter. | |
| 4099 */ | |
| 4100 String getPlatformDelimitedText(TextWriter writer) { | |
| 4101 int end = writer.getStart() + writer.getCharCount(); | |
| 4102 int startLine = content.getLineAtOffset(writer.getStart()); | |
| 4103 int endLine = content.getLineAtOffset(end); | |
| 4104 String endLineText = content.getLine(endLine); | |
| 4105 int endLineOffset = content.getOffsetAtLine(endLine); | |
| 4106 | |
| 4107 for (int i = startLine; i <= endLine; i++) { | |
| 4108 writer.writeLine(content.getLine(i), content.getOffsetAtLine(i)); | |
| 4109 if (i < endLine) { | |
| 4110 writer.writeLineDelimiter(PlatformLineDelimiter); | |
| 4111 } | |
| 4112 } | |
| 4113 if (end > endLineOffset + endLineText.length) { | |
| 4114 writer.writeLineDelimiter(PlatformLineDelimiter); | |
| 4115 } | |
| 4116 writer.close(); | |
| 4117 return writer.toString(); | |
| 4118 } | |
| 4119 /** | |
| 4120 * Returns all the ranges of text that have an associated StyleRange. | |
| 4121 * Returns an empty array if a LineStyleListener has been set. | |
| 4122 * Should not be called if a LineStyleListener has been set since the | |
| 4123 * listener maintains the styles. | |
| 4124 * <p> | |
| 4125 * The ranges array contains start and length pairs. Each pair refers to | |
| 4126 * the corresponding style in the styles array. For example, the pair | |
| 4127 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 4128 * at styles[n/2] returned by <code>getStyleRanges(int, int, bool)</code>. | |
| 4129 * </p> | |
| 4130 * | |
| 4131 * @return the ranges or an empty array if a LineStyleListener has been set. | |
| 4132 * | |
| 4133 * @exception SWTException <ul> | |
| 4134 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4135 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4136 * </ul> | |
| 4137 * | |
| 4138 * @since 3.2 | |
| 4139 * | |
| 4140 * @see #getStyleRanges(bool) | |
| 4141 */ | |
| 4142 public int[] getRanges() { | |
| 4143 checkWidget(); | |
| 4144 if (!isListening(LineGetStyle)) { | |
| 4145 int[] ranges = renderer.getRanges(0, content.getCharCount()); | |
| 4146 if (ranges !is null) return ranges; | |
| 4147 } | |
| 4148 return new int[0]; | |
| 4149 } | |
| 4150 /** | |
| 4151 * Returns the ranges of text that have an associated StyleRange. | |
| 4152 * Returns an empty array if a LineStyleListener has been set. | |
| 4153 * Should not be called if a LineStyleListener has been set since the | |
| 4154 * listener maintains the styles. | |
| 4155 * <p> | |
| 4156 * The ranges array contains start and length pairs. Each pair refers to | |
| 4157 * the corresponding style in the styles array. For example, the pair | |
| 4158 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 4159 * at styles[n/2] returned by <code>getStyleRanges(int, int, bool)</code>. | |
| 4160 * </p> | |
| 4161 * | |
| 4162 * @param start the start offset of the style ranges to return | |
| 4163 * @param length the number of style ranges to return | |
| 4164 * | |
| 4165 * @return the ranges or an empty array if a LineStyleListener has been set. | |
| 4166 * | |
| 4167 * @exception SWTException <ul> | |
| 4168 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4169 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4170 * </ul> | |
| 4171 * @exception IllegalArgumentException <ul> | |
| 4172 * <li>ERROR_INVALID_RANGE if start or length are outside the widget content</li> | |
| 4173 * </ul> | |
| 4174 * | |
| 4175 * @since 3.2 | |
| 4176 * | |
| 4177 * @see #getStyleRanges(int, int, bool) | |
| 4178 */ | |
| 4179 public int[] getRanges(int start, int length) { | |
| 4180 checkWidget(); | |
| 4181 int contentLength = getCharCount(); | |
| 4182 int end = start + length; | |
| 4183 if (start > end || start < 0 || end > contentLength) { | |
| 4184 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 4185 } | |
| 4186 if (!isListening(LineGetStyle)) { | |
| 4187 int[] ranges = renderer.getRanges(start, length); | |
| 4188 if (ranges !is null) return ranges; | |
| 4189 } | |
| 4190 return new int[0]; | |
| 4191 } | |
| 4192 /** | |
| 4193 * Returns the selection. | |
| 4194 * <p> | |
| 4195 * Text selections are specified in terms of caret positions. In a text | |
| 4196 * widget that contains N characters, there are N+1 caret positions, | |
| 4197 * ranging from 0..N | |
| 4198 * </p> | |
| 4199 * | |
| 4200 * @return start and end of the selection, x is the offset of the first | |
| 4201 * selected character, y is the offset after the last selected character. | |
| 4202 * The selection values returned are visual (i.e., x will always always be | |
| 4203 * <= y). To determine if a selection is right-to-left (RtoL) vs. left-to-right | |
| 4204 * (LtoR), compare the caretOffset to the start and end of the selection | |
| 4205 * (e.g., caretOffset is start of selection implies that the selection is RtoL). | |
| 4206 * @see #getSelectionRange | |
| 4207 * @exception SWTException <ul> | |
| 4208 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4209 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4210 * </ul> | |
| 4211 */ | |
| 4212 public Point getSelection() { | |
| 4213 checkWidget(); | |
| 4214 return new Point(selection.x, selection.y); | |
| 4215 } | |
| 4216 /** | |
| 4217 * Returns the selection. | |
| 4218 * | |
| 4219 * @return start and length of the selection, x is the offset of the | |
| 4220 * first selected character, relative to the first character of the | |
| 4221 * widget content. y is the length of the selection. | |
| 4222 * The selection values returned are visual (i.e., length will always always be | |
| 4223 * positive). To determine if a selection is right-to-left (RtoL) vs. left-to-right | |
| 4224 * (LtoR), compare the caretOffset to the start and end of the selection | |
| 4225 * (e.g., caretOffset is start of selection implies that the selection is RtoL). | |
| 4226 * @exception SWTException <ul> | |
| 4227 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4228 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4229 * </ul> | |
| 4230 */ | |
| 4231 public Point getSelectionRange() { | |
| 4232 checkWidget(); | |
| 4233 return new Point(selection.x, selection.y - selection.x); | |
| 4234 } | |
| 4235 /** | |
| 4236 * Returns the receiver's selection background color. | |
| 4237 * | |
| 4238 * @return the selection background color | |
| 4239 * | |
| 4240 * @exception SWTException <ul> | |
| 4241 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4242 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4243 * </ul> | |
| 4244 * @since 2.1 | |
| 4245 */ | |
| 4246 public Color getSelectionBackground() { | |
| 4247 checkWidget(); | |
| 4248 if (selectionBackground is null) { | |
| 4249 return getDisplay().getSystemColor(SWT.COLOR_LIST_SELECTION); | |
| 4250 } | |
| 4251 return selectionBackground; | |
| 4252 } | |
| 4253 /** | |
| 4254 * Gets the number of selected characters. | |
| 4255 * | |
| 4256 * @return the number of selected characters. | |
| 4257 * @exception SWTException <ul> | |
| 4258 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4259 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4260 * </ul> | |
| 4261 */ | |
| 4262 public int getSelectionCount() { | |
| 4263 checkWidget(); | |
| 4264 return getSelectionRange().y; | |
| 4265 } | |
| 4266 /** | |
| 4267 * Returns the receiver's selection foreground color. | |
| 4268 * | |
| 4269 * @return the selection foreground color | |
| 4270 * | |
| 4271 * @exception SWTException <ul> | |
| 4272 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4273 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4274 * </ul> | |
| 4275 * @since 2.1 | |
| 4276 */ | |
| 4277 public Color getSelectionForeground() { | |
| 4278 checkWidget(); | |
| 4279 if (selectionForeground is null) { | |
| 4280 return getDisplay().getSystemColor(SWT.COLOR_LIST_SELECTION_TEXT); | |
| 4281 } | |
| 4282 return selectionForeground; | |
| 4283 } | |
| 4284 /** | |
| 4285 * Returns the selected text. | |
| 4286 * | |
| 4287 * @return selected text, or an empty String if there is no selection. | |
| 4288 * @exception SWTException <ul> | |
| 4289 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4290 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4291 * </ul> | |
| 4292 */ | |
| 4293 public String getSelectionText() { | |
| 4294 checkWidget(); | |
| 4295 return content.getTextRange(selection.x, selection.y - selection.x); | |
| 4296 } | |
| 4297 public override int getStyle() { | |
| 4298 int style = super.getStyle(); | |
| 4299 style &= ~(SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT | SWT.MIRRORED); | |
| 4300 if (isMirrored()) { | |
| 4301 style |= SWT.RIGHT_TO_LEFT | SWT.MIRRORED; | |
| 4302 } else { | |
| 4303 style |= SWT.LEFT_TO_RIGHT; | |
| 4304 } | |
| 4305 return style; | |
| 4306 } | |
| 4307 | |
| 4308 /** | |
| 4309 * Returns the text segments that should be treated as if they | |
| 4310 * had a different direction than the surrounding text. | |
| 4311 * | |
| 4312 * @param lineOffset offset of the first character in the line. | |
| 4313 * 0 based from the beginning of the document. | |
| 4314 * @param line text of the line to specify bidi segments for | |
| 4315 * @return text segments that should be treated as if they had a | |
| 4316 * different direction than the surrounding text. Only the start | |
| 4317 * index of a segment is specified, relative to the start of the | |
| 4318 * line. Always starts with 0 and ends with the line length. | |
| 4319 * @exception IllegalArgumentException <ul> | |
| 4320 * <li>ERROR_INVALID_ARGUMENT - if the segment indices returned | |
| 4321 * by the listener do not start with 0, are not in ascending order, | |
| 4322 * exceed the line length or have duplicates</li> | |
| 4323 * </ul> | |
| 4324 */ | |
| 4325 int [] getBidiSegments(int lineOffset, String line) { | |
| 4326 if (!isBidi()) return null; | |
| 4327 if (!isListening(LineGetSegments)) { | |
| 4328 return getBidiSegmentsCompatibility(line, lineOffset); | |
| 4329 } | |
| 4330 StyledTextEvent event = sendLineEvent(LineGetSegments, lineOffset, line); | |
| 4331 int lineLength = line.length; | |
| 4332 int[] segments; | |
| 4333 if (event is null || event.segments is null || event.segments.length is 0) { | |
| 4334 segments = [0, lineLength]; | |
| 4335 } else { | |
| 4336 int segmentCount = event.segments.length; | |
| 4337 | |
| 4338 // test segment index consistency | |
| 4339 if (event.segments[0] !is 0) { | |
| 4340 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 4341 } | |
| 4342 for (int i = 1; i < segmentCount; i++) { | |
| 4343 if (event.segments[i] <= event.segments[i - 1] || event.segments[i] > lineLength) { | |
| 4344 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 4345 } | |
| 4346 } | |
| 4347 // ensure that last segment index is line end offset | |
| 4348 if (event.segments[segmentCount - 1] !is lineLength) { | |
| 4349 segments = new int[segmentCount + 1]; | |
| 4350 System.arraycopy(event.segments, 0, segments, 0, segmentCount); | |
| 4351 segments[segmentCount] = lineLength; | |
| 4352 } else { | |
| 4353 segments = event.segments; | |
| 4354 } | |
| 4355 } | |
| 4356 return segments; | |
| 4357 } | |
| 4358 /** | |
| 4359 * @see #getBidiSegments | |
| 4360 * Supports deprecated setBidiColoring API. Remove when API is removed. | |
| 4361 */ | |
| 4362 int [] getBidiSegmentsCompatibility(String line, int lineOffset) { | |
| 4363 int lineLength = line.length; | |
| 4364 if (!bidiColoring) { | |
| 4365 return [0, lineLength]; | |
| 4366 } | |
| 4367 StyleRange [] styles = null; | |
| 4368 StyledTextEvent event = getLineStyleData(lineOffset, line); | |
| 4369 if (event !is null) { | |
| 4370 styles = event.styles; | |
| 4371 } else { | |
| 4372 styles = renderer.getStyleRanges(lineOffset, lineLength, true); | |
| 4373 } | |
| 4374 if (styles is null || styles.length is 0) { | |
| 4375 return [0, lineLength]; | |
| 4376 } | |
| 4377 int k=0, count = 1; | |
| 4378 while (k < styles.length && styles[k].start is 0 && styles[k].length is lineLength) { | |
| 4379 k++; | |
| 4380 } | |
| 4381 int[] offsets = new int[(styles.length - k) * 2 + 2]; | |
| 4382 for (int i = k; i < styles.length; i++) { | |
| 4383 StyleRange style = styles[i]; | |
| 4384 int styleLineStart = Math.max(style.start - lineOffset, 0); | |
| 4385 int styleLineEnd = Math.max(style.start + style.length - lineOffset, styleLineStart); | |
| 4386 styleLineEnd = Math.min (styleLineEnd, line.length ); | |
| 4387 if (i > 0 && count > 1 && | |
| 4388 ((styleLineStart >= offsets[count-2] && styleLineStart <= offsets[count-1]) || | |
| 4389 (styleLineEnd >= offsets[count-2] && styleLineEnd <= offsets[count-1])) && | |
| 4390 style.similarTo(styles[i-1])) { | |
| 4391 offsets[count-2] = Math.min(offsets[count-2], styleLineStart); | |
| 4392 offsets[count-1] = Math.max(offsets[count-1], styleLineEnd); | |
| 4393 } else { | |
| 4394 if (styleLineStart > offsets[count - 1]) { | |
| 4395 offsets[count] = styleLineStart; | |
| 4396 count++; | |
| 4397 } | |
| 4398 offsets[count] = styleLineEnd; | |
| 4399 count++; | |
| 4400 } | |
| 4401 } | |
| 4402 // add offset for last non-colored segment in line, if any | |
| 4403 if (lineLength > offsets[count-1]) { | |
| 4404 offsets [count] = lineLength; | |
| 4405 count++; | |
| 4406 } | |
| 4407 if (count is offsets.length) { | |
| 4408 return offsets; | |
| 4409 } | |
| 4410 int [] result = new int [count]; | |
| 4411 System.arraycopy (offsets, 0, result, 0, count); | |
| 4412 return result; | |
| 4413 } | |
| 4414 /** | |
| 4415 * Returns the style range at the given offset. | |
| 4416 * <p> | |
| 4417 * Returns null if a LineStyleListener has been set or if a style is not set | |
| 4418 * for the offset. | |
| 4419 * Should not be called if a LineStyleListener has been set since the | |
| 4420 * listener maintains the styles. | |
| 4421 * </p> | |
| 4422 * | |
| 4423 * @param offset the offset to return the style for. | |
| 4424 * 0 <= offset < getCharCount() must be true. | |
| 4425 * @return a StyleRange with start is offset and length is 1, indicating | |
| 4426 * the style at the given offset. null if a LineStyleListener has been set | |
| 4427 * or if a style is not set for the given offset. | |
| 4428 * @exception SWTException <ul> | |
| 4429 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4430 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4431 * </ul> | |
| 4432 * @exception IllegalArgumentException <ul> | |
| 4433 * <li>ERROR_INVALID_ARGUMENT when the offset is invalid</li> | |
| 4434 * </ul> | |
| 4435 */ | |
| 4436 public StyleRange getStyleRangeAtOffset(int offset) { | |
| 4437 checkWidget(); | |
| 4438 if (offset < 0 || offset >= getCharCount()) { | |
| 4439 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 4440 } | |
| 4441 if (!isListening(LineGetStyle)) { | |
| 4442 StyleRange[] ranges = renderer.getStyleRanges(offset, 1, true); | |
| 4443 if (ranges !is null) return ranges[0]; | |
| 4444 } | |
| 4445 return null; | |
| 4446 } | |
| 4447 /** | |
| 4448 * Returns the styles. | |
| 4449 * <p> | |
| 4450 * Returns an empty array if a LineStyleListener has been set. | |
| 4451 * Should not be called if a LineStyleListener has been set since the | |
| 4452 * listener maintains the styles. | |
| 4453 * <p></p> | |
| 4454 * Note: Because a StyleRange includes the start and length, the | |
| 4455 * same instance cannot occur multiple times in the array of styles. | |
| 4456 * If the same style attributes, such as font and color, occur in | |
| 4457 * multiple StyleRanges, <code>getStyleRanges(bool)</code> | |
| 4458 * can be used to get the styles without the ranges. | |
| 4459 * </p> | |
| 4460 * | |
| 4461 * @return the styles or an empty array if a LineStyleListener has been set. | |
| 4462 * | |
| 4463 * @exception SWTException <ul> | |
| 4464 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4465 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4466 * </ul> | |
| 4467 * | |
| 4468 * @see #getStyleRanges(bool) | |
| 4469 */ | |
| 4470 public StyleRange[] getStyleRanges() { | |
| 4471 checkWidget(); | |
| 4472 return getStyleRanges(0, content.getCharCount(), true); | |
| 4473 } | |
| 4474 /** | |
| 4475 * Returns the styles. | |
| 4476 * <p> | |
| 4477 * Returns an empty array if a LineStyleListener has been set. | |
| 4478 * Should not be called if a LineStyleListener has been set since the | |
| 4479 * listener maintains the styles. | |
| 4480 * </p><p> | |
| 4481 * Note: When <code>includeRanges</code> is true, the start and length | |
| 4482 * fields of each StyleRange will be valid, however the StyleRange | |
| 4483 * objects may need to be cloned. When <code>includeRanges</code> is | |
| 4484 * false, <code>getRanges(int, int)</code> can be used to get the | |
| 4485 * associated ranges. | |
| 4486 * </p> | |
| 4487 * | |
| 4488 * @param includeRanges whether the start and length field of the StyleRanges should be set. | |
| 4489 * | |
| 4490 * @return the styles or an empty array if a LineStyleListener has been set. | |
| 4491 * | |
| 4492 * @exception SWTException <ul> | |
| 4493 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4494 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4495 * </ul> | |
| 4496 * | |
| 4497 * @since 3.2 | |
| 4498 * | |
| 4499 * @see #getRanges(int, int) | |
| 4500 * @see #setStyleRanges(int[], StyleRange[]) | |
| 4501 */ | |
| 4502 public StyleRange[] getStyleRanges(bool includeRanges) { | |
| 4503 checkWidget(); | |
| 4504 return getStyleRanges(0, content.getCharCount(), includeRanges); | |
| 4505 } | |
| 4506 /** | |
| 4507 * Returns the styles for the given text range. | |
| 4508 * <p> | |
| 4509 * Returns an empty array if a LineStyleListener has been set. | |
| 4510 * Should not be called if a LineStyleListener has been set since the | |
| 4511 * listener maintains the styles. | |
| 4512 * </p><p> | |
| 4513 * Note: Because the StyleRange includes the start and length, the | |
| 4514 * same instance cannot occur multiple times in the array of styles. | |
| 4515 * If the same style attributes, such as font and color, occur in | |
| 4516 * multiple StyleRanges, <code>getStyleRanges(int, int, bool)</code> | |
| 4517 * can be used to get the styles without the ranges. | |
| 4518 * </p> | |
| 4519 * @param start the start offset of the style ranges to return | |
| 4520 * @param length the number of style ranges to return | |
| 4521 * | |
| 4522 * @return the styles or an empty array if a LineStyleListener has | |
| 4523 * been set. The returned styles will reflect the given range. The first | |
| 4524 * returned <code>StyleRange</code> will have a starting offset >= start | |
| 4525 * and the last returned <code>StyleRange</code> will have an ending | |
| 4526 * offset <= start + length - 1 | |
| 4527 * | |
| 4528 * @exception SWTException <ul> | |
| 4529 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4530 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4531 * </ul> | |
| 4532 * @exception IllegalArgumentException <ul> | |
| 4533 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4534 * </ul> | |
| 4535 * | |
| 4536 * @see #getStyleRanges(int, int, bool) | |
| 4537 * | |
| 4538 * @since 3.0 | |
| 4539 */ | |
| 4540 public StyleRange[] getStyleRanges(int start, int length) { | |
| 4541 checkWidget(); | |
| 4542 return getStyleRanges(start, length, true); | |
| 4543 } | |
| 4544 /** | |
| 4545 * Returns the styles for the given text range. | |
| 4546 * <p> | |
| 4547 * Returns an empty array if a LineStyleListener has been set. | |
| 4548 * Should not be called if a LineStyleListener has been set since the | |
| 4549 * listener maintains the styles. | |
| 4550 * </p><p> | |
| 4551 * Note: When <code>includeRanges</code> is true, the start and length | |
| 4552 * fields of each StyleRange will be valid, however the StyleRange | |
| 4553 * objects may need to be cloned. When <code>includeRanges</code> is | |
| 4554 * false, <code>getRanges(int, int)</code> can be used to get the | |
| 4555 * associated ranges. | |
| 4556 * </p> | |
| 4557 * | |
| 4558 * @param start the start offset of the style ranges to return | |
| 4559 * @param length the number of style ranges to return | |
| 4560 * @param includeRanges whether the start and length field of the StyleRanges should be set. | |
| 4561 * | |
| 4562 * @return the styles or an empty array if a LineStyleListener has | |
| 4563 * been set. The returned styles will reflect the given range. The first | |
| 4564 * returned <code>StyleRange</code> will have a starting offset >= start | |
| 4565 * and the last returned <code>StyleRange</code> will have an ending | |
| 4566 * offset <= start + length - 1 | |
| 4567 * | |
| 4568 * @exception SWTException <ul> | |
| 4569 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4570 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4571 * </ul> | |
| 4572 * @exception IllegalArgumentException <ul> | |
| 4573 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4574 * </ul> | |
| 4575 * | |
| 4576 * @since 3.2 | |
| 4577 * | |
| 4578 * @see #getRanges(int, int) | |
| 4579 * @see #setStyleRanges(int[], StyleRange[]) | |
| 4580 */ | |
| 4581 public StyleRange[] getStyleRanges(int start, int length, bool includeRanges) { | |
| 4582 checkWidget(); | |
| 4583 int contentLength = getCharCount(); | |
| 4584 int end = start + length; | |
| 4585 if (start > end || start < 0 || end > contentLength) { | |
| 4586 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 4587 } | |
| 4588 if (!isListening(LineGetStyle)) { | |
| 4589 StyleRange[] ranges = renderer.getStyleRanges(start, length, includeRanges); | |
| 4590 if (ranges !is null) return ranges; | |
| 4591 } | |
| 4592 return new StyleRange[0]; | |
| 4593 } | |
| 4594 /** | |
| 4595 * Returns the tab width measured in characters. | |
| 4596 * | |
| 4597 * @return tab width measured in characters | |
| 4598 * @exception SWTException <ul> | |
| 4599 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4600 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4601 * </ul> | |
| 4602 */ | |
| 4603 public int getTabs() { | |
| 4604 checkWidget(); | |
| 4605 return tabLength; | |
| 4606 } | |
| 4607 /** | |
| 4608 * Returns a copy of the widget content. | |
| 4609 * | |
| 4610 * @return copy of the widget content | |
| 4611 * @exception SWTException <ul> | |
| 4612 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4613 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4614 * </ul> | |
| 4615 */ | |
| 4616 public String getText() { | |
| 4617 checkWidget(); | |
| 4618 return content.getTextRange(0, getCharCount()); | |
| 4619 } | |
| 4620 /** | |
| 4621 * Returns the widget content between the two offsets. | |
| 4622 * | |
| 4623 * @param start offset of the first character in the returned String | |
| 4624 * @param end offset of the last character in the returned String | |
| 4625 * @return widget content starting at start and ending at end | |
| 4626 * @see #getTextRange(int,int) | |
| 4627 * @exception SWTException <ul> | |
| 4628 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4629 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4630 * </ul> | |
| 4631 * @exception IllegalArgumentException <ul> | |
| 4632 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4633 * </ul> | |
| 4634 */ | |
| 4635 public String getText(int start, int end) { | |
| 4636 checkWidget(); | |
| 4637 int contentLength = getCharCount(); | |
| 4638 if (start < 0 || start >= contentLength || end < 0 || end >= contentLength || start > end) { | |
| 4639 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 4640 } | |
|
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|
4641 auto res = content.getTextRange(start, content.getCharCount() - start); |
|
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parents:
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diff
changeset
|
4642 return res[0 .. res.offsetAfter(end - start)]; |
| 25 | 4643 } |
| 4644 /** | |
| 4645 * Returns the smallest bounding rectangle that includes the characters between two offsets. | |
| 4646 * | |
| 4647 * @param start offset of the first character included in the bounding box | |
| 4648 * @param end offset of the last character included in the bounding box | |
| 4649 * @return bounding box of the text between start and end | |
| 4650 * @exception SWTException <ul> | |
| 4651 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4652 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4653 * </ul> | |
| 4654 * @exception IllegalArgumentException <ul> | |
| 4655 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4656 * </ul> | |
| 4657 * @since 3.1 | |
| 4658 */ | |
| 4659 public Rectangle getTextBounds(int start, int end) { | |
| 4660 checkWidget(); | |
| 4661 int contentLength = getCharCount(); | |
| 4662 if (start < 0 || start >= contentLength || end < 0 || end >= contentLength || start > end) { | |
| 4663 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 4664 } | |
| 4665 int lineStart = content.getLineAtOffset(start); | |
| 4666 int lineEnd = content.getLineAtOffset(end); | |
| 4667 Rectangle rect; | |
| 4668 int y = getLinePixel(lineStart); | |
| 4669 int height = 0; | |
| 4670 int left = 0x7fffffff, right = 0; | |
| 4671 for (int i = lineStart; i <= lineEnd; i++) { | |
| 4672 int lineOffset = content.getOffsetAtLine(i); | |
| 4673 TextLayout layout = renderer.getTextLayout(i); | |
| 4674 int length = layout.getText().length; | |
| 4675 if (length > 0) { | |
| 4676 if (i is lineStart) { | |
| 4677 if (i is lineEnd) { | |
| 4678 rect = layout.getBounds(start - lineOffset, end - lineOffset); | |
| 4679 } else { | |
| 4680 rect = layout.getBounds(start - lineOffset, length); | |
| 4681 } | |
| 4682 y += rect.y; | |
| 4683 } else if (i is lineEnd) { | |
| 4684 rect = layout.getBounds(0, end - lineOffset); | |
| 4685 } else { | |
| 4686 rect = layout.getBounds(); | |
| 4687 } | |
| 4688 left = Math.min(left, rect.x); | |
| 4689 right = Math.max(right, rect.x + rect.width); | |
| 4690 height += rect.height; | |
| 4691 } else { | |
| 4692 height += renderer.getLineHeight(); | |
| 4693 } | |
| 4694 renderer.disposeTextLayout(layout); | |
| 4695 } | |
| 4696 rect = new Rectangle (left, y, right-left, height); | |
| 4697 rect.x += leftMargin - horizontalScrollOffset; | |
| 4698 return rect; | |
| 4699 } | |
| 4700 /** | |
| 4701 * Returns the widget content starting at start for length characters. | |
| 4702 * | |
| 4703 * @param start offset of the first character in the returned String | |
| 4704 * @param length number of characters to return | |
| 4705 * @return widget content starting at start and extending length characters. | |
| 4706 * @exception SWTException <ul> | |
| 4707 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4708 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4709 * </ul> | |
| 4710 * @exception IllegalArgumentException <ul> | |
| 4711 * <li>ERROR_INVALID_RANGE when start and/or length are outside the widget content</li> | |
| 4712 * </ul> | |
| 4713 */ | |
| 4714 public String getTextRange(int start, int length) { | |
| 4715 checkWidget(); | |
| 4716 int contentLength = getCharCount(); | |
| 4717 int end = start + length; | |
| 4718 if (start > end || start < 0 || end > contentLength) { | |
| 4719 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 4720 } | |
| 4721 return content.getTextRange(start, length); | |
| 4722 } | |
| 4723 /** | |
| 4724 * Returns the maximum number of characters that the receiver is capable of holding. | |
| 4725 * | |
| 4726 * @return the text limit | |
| 4727 * | |
| 4728 * @exception SWTException <ul> | |
| 4729 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4730 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4731 * </ul> | |
| 4732 */ | |
| 4733 public int getTextLimit() { | |
| 4734 checkWidget(); | |
| 4735 return textLimit; | |
| 4736 } | |
| 4737 /** | |
| 4738 * Gets the top index. | |
| 4739 * <p> | |
| 4740 * The top index is the index of the fully visible line that is currently | |
| 4741 * at the top of the widget or the topmost partially visible line if no line is fully visible. | |
| 4742 * The top index changes when the widget is scrolled. Indexing is zero based. | |
| 4743 * </p> | |
| 4744 * | |
| 4745 * @return the index of the top line | |
| 4746 * @exception SWTException <ul> | |
| 4747 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4748 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4749 * </ul> | |
| 4750 */ | |
| 4751 public int getTopIndex() { | |
| 4752 checkWidget(); | |
| 4753 return topIndex; | |
| 4754 } | |
| 4755 /** | |
| 4756 * Gets the top pixel. | |
| 4757 * <p> | |
| 4758 * The top pixel is the pixel position of the line that is | |
| 4759 * currently at the top of the widget. The text widget can be scrolled by pixels | |
| 4760 * by dragging the scroll thumb so that a partial line may be displayed at the top | |
| 4761 * the widget. The top pixel changes when the widget is scrolled. The top pixel | |
| 4762 * does not include the widget trimming. | |
| 4763 * </p> | |
| 4764 * | |
| 4765 * @return pixel position of the top line | |
| 4766 * @exception SWTException <ul> | |
| 4767 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4768 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4769 * </ul> | |
| 4770 */ | |
| 4771 public int getTopPixel() { | |
| 4772 checkWidget(); | |
| 4773 return getVerticalScrollOffset(); | |
| 4774 } | |
| 4775 /** | |
| 4776 * Returns the vertical scroll increment. | |
| 4777 * | |
| 4778 * @return vertical scroll increment. | |
| 4779 */ | |
| 4780 int getVerticalIncrement() { | |
| 4781 return renderer.getLineHeight(); | |
| 4782 } | |
| 4783 int getVerticalScrollOffset() { | |
| 4784 if (verticalScrollOffset is -1) { | |
| 4785 renderer.calculate(0, topIndex); | |
| 4786 int height = 0; | |
| 4787 for (int i = 0; i < topIndex; i++) { | |
| 4788 height += renderer.getLineHeight(i); | |
| 4789 } | |
| 4790 height -= topIndexY; | |
| 4791 verticalScrollOffset = height; | |
| 4792 } | |
| 4793 return verticalScrollOffset; | |
| 4794 } | |
| 4795 int getVisualLineIndex(TextLayout layout, int offsetInLine) { | |
| 4796 int lineIndex = layout.getLineIndex(offsetInLine); | |
| 4797 int[] offsets = layout.getLineOffsets(); | |
| 4798 if (lineIndex !is 0 && offsetInLine is offsets[lineIndex]) { | |
| 4799 int lineY = layout.getLineBounds(lineIndex).y; | |
| 4800 int caretY = getCaret().getLocation().y - topMargin - getLinePixel(getCaretLine()); | |
| 4801 if (lineY > caretY) lineIndex--; | |
| 4802 } | |
| 4803 return lineIndex; | |
| 4804 } | |
| 4805 int getCaretDirection() { | |
| 4806 if (!isBidiCaret()) return SWT.DEFAULT; | |
| 4807 if (ime.getCompositionOffset() !is -1) return SWT.DEFAULT; | |
| 4808 if (!updateCaretDirection && caretDirection !is SWT.NULL) return caretDirection; | |
| 4809 updateCaretDirection = false; | |
| 4810 int caretLine = getCaretLine(); | |
| 4811 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 4812 String line = content.getLine(caretLine); | |
| 4813 int offset = caretOffset - lineOffset; | |
| 4814 int lineLength = line.length; | |
| 4815 if (lineLength is 0) return isMirrored() ? SWT.RIGHT : SWT.LEFT; | |
|
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parents:
113
diff
changeset
|
4816 if (caretAlignment is PREVIOUS_OFFSET_TRAILING && offset > 0) |
|
536e43f63c81
Comprehensive update for Win32/Linux32 dmd-2.053/dmd-1.068+Tango-r5661
Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
113
diff
changeset
|
4817 offset = line.offsetBefore(offset); |
|
536e43f63c81
Comprehensive update for Win32/Linux32 dmd-2.053/dmd-1.068+Tango-r5661
Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
113
diff
changeset
|
4818 if (offset is lineLength && offset > 0) |
|
536e43f63c81
Comprehensive update for Win32/Linux32 dmd-2.053/dmd-1.068+Tango-r5661
Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
113
diff
changeset
|
4819 offset = line.offsetBefore(offset); |
|
536e43f63c81
Comprehensive update for Win32/Linux32 dmd-2.053/dmd-1.068+Tango-r5661
Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
113
diff
changeset
|
4820 while (offset > 0 && Character.isDigit(line.dcharAt(offset))) |
|
536e43f63c81
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Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
113
diff
changeset
|
4821 offset = line.offsetBefore(offset); |
| 51 | 4822 if (offset is 0 && Character.isDigit(line.dcharAt(offset))) { |
| 25 | 4823 return isMirrored() ? SWT.RIGHT : SWT.LEFT; |
| 4824 } | |
| 4825 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 4826 int level = layout.getLevel(offset); | |
| 4827 renderer.disposeTextLayout(layout); | |
| 4828 return ((level & 1) !is 0) ? SWT.RIGHT : SWT.LEFT; | |
| 4829 } | |
| 4830 /* | |
| 4831 * Returns the index of the line the caret is on. | |
| 4832 */ | |
| 4833 int getCaretLine() { | |
| 4834 return content.getLineAtOffset(caretOffset); | |
| 4835 } | |
| 4836 int getWrapWidth () { | |
| 4837 if (wordWrap && !isSingleLine()) { | |
| 4838 int width = clientAreaWidth - leftMargin - rightMargin - getCaretWidth(); | |
| 4839 return width > 0 ? width : 1; | |
| 4840 } | |
| 4841 return -1; | |
| 4842 } | |
| 4843 int getWordNext (int offset, int movement) { | |
| 4844 int newOffset, lineOffset; | |
| 4845 String lineText; | |
| 4846 if (offset >= getCharCount()) { | |
| 4847 newOffset = offset; | |
| 4848 int lineIndex = content.getLineCount() - 1; | |
| 4849 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4850 lineText = content.getLine(lineIndex); | |
| 4851 } else { | |
| 4852 int lineIndex = content.getLineAtOffset(offset); | |
| 4853 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4854 lineText = content.getLine(lineIndex); | |
| 4855 int lineLength = lineText.length; | |
| 4856 if (offset is lineOffset + lineLength) { | |
| 4857 newOffset = content.getOffsetAtLine(lineIndex + 1); | |
| 4858 } else { | |
| 4859 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4860 newOffset = lineOffset + layout.getNextOffset(offset - lineOffset, movement); | |
| 4861 renderer.disposeTextLayout(layout); | |
| 4862 } | |
| 4863 } | |
| 4864 return sendWordBoundaryEvent(WordNext, movement, offset, newOffset, lineText, lineOffset); | |
| 4865 } | |
| 4866 int getWordPrevious(int offset, int movement) { | |
| 4867 int newOffset, lineOffset; | |
| 4868 String lineText; | |
| 4869 if (offset <= 0) { | |
| 4870 newOffset = 0; | |
| 4871 int lineIndex = content.getLineAtOffset(newOffset); | |
| 4872 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4873 lineText = content.getLine(lineIndex); | |
| 4874 } else { | |
| 4875 int lineIndex = content.getLineAtOffset(offset); | |
| 4876 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4877 lineText = content.getLine(lineIndex); | |
| 4878 if (offset is lineOffset) { | |
| 4879 String nextLineText = content.getLine(lineIndex - 1); | |
| 4880 int nextLineOffset = content.getOffsetAtLine(lineIndex - 1); | |
| 4881 newOffset = nextLineOffset + nextLineText.length; | |
| 4882 } else { | |
| 4883 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4884 newOffset = lineOffset + layout.getPreviousOffset(offset - lineOffset, movement); | |
| 4885 renderer.disposeTextLayout(layout); | |
| 4886 } | |
| 4887 } | |
| 4888 return sendWordBoundaryEvent(WordPrevious, movement, offset, newOffset, lineText, lineOffset); | |
| 4889 } | |
| 4890 /** | |
| 4891 * Returns whether the widget wraps lines. | |
| 4892 * | |
| 4893 * @return true if widget wraps lines, false otherwise | |
| 4894 * @since 2.0 | |
| 4895 */ | |
| 4896 public bool getWordWrap() { | |
| 4897 checkWidget(); | |
| 4898 return wordWrap; | |
| 4899 } | |
| 4900 /** | |
| 4901 * Returns the location of the given offset. | |
| 4902 * <p> | |
| 4903 * <b>NOTE:</b> Does not return correct values for true italic fonts (vs. slanted fonts). | |
| 4904 * </p> | |
| 4905 * | |
| 4906 * @return location of the character at the given offset in the line. | |
| 4907 */ | |
| 4908 Point getPointAtOffset(int offset) { | |
| 4909 int lineIndex = content.getLineAtOffset(offset); | |
| 4910 String line = content.getLine(lineIndex); | |
| 4911 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4912 int offsetInLine = offset - lineOffset; | |
| 4913 int lineLength = line.length; | |
| 4914 if (lineIndex < content.getLineCount() - 1) { | |
|
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4915 int afterEndLineOffset = content.getOffsetAtLine(lineIndex + 1); |
|
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parents:
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|
4916 if (lineLength < offsetInLine && offsetInLine < afterEndLineOffset) { |
| 25 | 4917 offsetInLine = lineLength; |
| 4918 } | |
| 4919 } | |
| 4920 Point point; | |
| 4921 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4922 if (lineLength !is 0 && offsetInLine <= lineLength) { | |
| 4923 if (offsetInLine is lineLength) { | |
|
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|
4924 point = layout.getLocation(getPreviousCharOffset(lineIndex, offsetInLine), true); |
| 25 | 4925 } else { |
| 4926 switch (caretAlignment) { | |
| 4927 case OFFSET_LEADING: | |
| 4928 point = layout.getLocation(offsetInLine, false); | |
| 4929 break; | |
| 4930 case PREVIOUS_OFFSET_TRAILING: | |
| 4931 default: | |
| 4932 if (offsetInLine is 0) { | |
| 4933 point = layout.getLocation(offsetInLine, false); | |
| 4934 } else { | |
|
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|
4935 point = layout.getLocation(getPreviousCharOffset(lineIndex, offsetInLine), true); |
| 25 | 4936 } |
| 4937 break; | |
| 4938 } | |
| 4939 } | |
| 4940 } else { | |
| 4941 point = new Point(layout.getIndent(), 0); | |
| 4942 } | |
| 4943 renderer.disposeTextLayout(layout); | |
| 4944 point.x += leftMargin - horizontalScrollOffset; | |
| 4945 point.y += getLinePixel(lineIndex); | |
| 4946 return point; | |
| 4947 } | |
| 4948 /** | |
| 4949 * Inserts a string. The old selection is replaced with the new text. | |
| 4950 * | |
| 4951 * @param string the string | |
| 4952 * @see #replaceTextRange(int,int,String) | |
| 4953 * @exception SWTException <ul> | |
| 4954 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4955 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4956 * </ul> | |
| 4957 */ | |
| 4958 public void insert(String string) { | |
| 4959 checkWidget(); | |
| 4960 // SWT extension: allow null for zero length string | |
| 4961 // if (string is null) { | |
| 4962 // SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 4963 // } | |
| 4964 Point sel = getSelectionRange(); | |
| 4965 replaceTextRange(sel.x, sel.y, string); | |
| 4966 } | |
| 4967 /** | |
| 4968 * Creates content change listeners and set the default content model. | |
| 4969 */ | |
| 4970 void installDefaultContent() { | |
| 4971 textChangeListener = new class() TextChangeListener { | |
| 4972 public void textChanging(TextChangingEvent event) { | |
| 4973 handleTextChanging(event); | |
| 4974 } | |
| 4975 public void textChanged(TextChangedEvent event) { | |
| 4976 handleTextChanged(event); | |
| 4977 } | |
| 4978 public void textSet(TextChangedEvent event) { | |
| 4979 handleTextSet(event); | |
| 4980 } | |
| 4981 }; | |
| 4982 content = new DefaultContent(); | |
| 4983 content.addTextChangeListener(textChangeListener); | |
| 4984 } | |
| 4985 /** | |
| 4986 * Adds event listeners | |
| 4987 */ | |
| 4988 void installListeners() { | |
| 4989 ScrollBar verticalBar = getVerticalBar(); | |
| 4990 ScrollBar horizontalBar = getHorizontalBar(); | |
| 4991 | |
| 4992 listener = new class() Listener { | |
| 4993 public void handleEvent(Event event) { | |
| 4994 switch (event.type) { | |
| 4995 case SWT.Dispose: handleDispose(event); break; | |
| 4996 case SWT.KeyDown: handleKeyDown(event); break; | |
| 4997 case SWT.KeyUp: handleKeyUp(event); break; | |
| 4998 case SWT.MouseDown: handleMouseDown(event); break; | |
| 4999 case SWT.MouseUp: handleMouseUp(event); break; | |
| 5000 case SWT.MouseMove: handleMouseMove(event); break; | |
| 5001 case SWT.Paint: handlePaint(event); break; | |
| 5002 case SWT.Resize: handleResize(event); break; | |
| 5003 case SWT.Traverse: handleTraverse(event); break; | |
| 5004 default: | |
| 5005 } | |
| 5006 } | |
| 5007 }; | |
| 5008 addListener(SWT.Dispose, listener); | |
| 5009 addListener(SWT.KeyDown, listener); | |
| 5010 addListener(SWT.KeyUp, listener); | |
| 5011 addListener(SWT.MouseDown, listener); | |
| 5012 addListener(SWT.MouseUp, listener); | |
| 5013 addListener(SWT.MouseMove, listener); | |
| 5014 addListener(SWT.Paint, listener); | |
| 5015 addListener(SWT.Resize, listener); | |
| 5016 addListener(SWT.Traverse, listener); | |
| 5017 ime.addListener(SWT.ImeComposition, new class() Listener { | |
| 5018 public void handleEvent(Event event) { | |
| 5019 switch (event.detail) { | |
| 5020 case SWT.COMPOSITION_SELECTION: handleCompositionSelection(event); break; | |
| 5021 case SWT.COMPOSITION_CHANGED: handleCompositionChanged(event); break; | |
| 5022 case SWT.COMPOSITION_OFFSET: handleCompositionOffset(event); break; | |
| 5023 default: | |
| 5024 } | |
| 5025 } | |
| 5026 }); | |
| 5027 if (verticalBar !is null) { | |
| 5028 verticalBar.addListener(SWT.Selection, new class() Listener { | |
| 5029 public void handleEvent(Event event) { | |
| 5030 handleVerticalScroll(event); | |
| 5031 } | |
| 5032 }); | |
| 5033 } | |
| 5034 if (horizontalBar !is null) { | |
| 5035 horizontalBar.addListener(SWT.Selection, new class() Listener { | |
| 5036 public void handleEvent(Event event) { | |
| 5037 handleHorizontalScroll(event); | |
| 5038 } | |
| 5039 }); | |
| 5040 } | |
| 5041 } | |
| 5042 void internalRedrawRange(int start, int length) { | |
| 5043 if (length <= 0) return; | |
| 5044 int end = start + length; | |
| 5045 int startLine = content.getLineAtOffset(start); | |
| 5046 int endLine = content.getLineAtOffset(end); | |
| 5047 int partialBottomIndex = getPartialBottomIndex(); | |
| 5048 int partialTopIndex = getPartialTopIndex(); | |
| 5049 if (startLine > partialBottomIndex || endLine < partialTopIndex) { | |
| 5050 return; | |
| 5051 } | |
| 5052 if (partialTopIndex > startLine) { | |
| 5053 startLine = partialTopIndex; | |
| 5054 start = 0; | |
| 5055 } else { | |
| 5056 start -= content.getOffsetAtLine(startLine); | |
| 5057 } | |
| 5058 if (partialBottomIndex < endLine) { | |
| 5059 endLine = partialBottomIndex + 1; | |
| 5060 end = 0; | |
| 5061 } else { | |
| 5062 end -= content.getOffsetAtLine(endLine); | |
| 5063 } | |
| 5064 | |
| 5065 TextLayout layout = renderer.getTextLayout(startLine); | |
| 5066 int lineX = leftMargin - horizontalScrollOffset, startLineY = getLinePixel(startLine); | |
| 5067 int[] offsets = layout.getLineOffsets(); | |
| 5068 int startIndex = layout.getLineIndex(Math.min(start, layout.getText().length)); | |
| 5069 | |
| 5070 /* Redraw end of line before start line if wrapped and start offset is first char */ | |
| 5071 if (wordWrap && startIndex > 0 && offsets[startIndex] is start) { | |
| 5072 Rectangle rect = layout.getLineBounds(startIndex - 1); | |
| 5073 rect.x = rect.width; | |
| 5074 rect.width = clientAreaWidth - rightMargin - rect.x; | |
| 5075 rect.x += lineX; | |
| 5076 rect.y += startLineY; | |
| 5077 super.redraw(rect.x, rect.y, rect.width, rect.height, false); | |
| 5078 } | |
| 5079 | |
| 5080 if (startLine is endLine) { | |
| 5081 int endIndex = layout.getLineIndex(Math.min(end, layout.getText().length)); | |
| 5082 if (startIndex is endIndex) { | |
| 5083 /* Redraw rect between start and end offset if start and end offsets are in same wrapped line */ | |
|
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parents:
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diff
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|
5084 Rectangle rect = layout.getBounds( start, getPreviousCharOffset(startLine, end) ); |
| 25 | 5085 rect.x += lineX; |
| 5086 rect.y += startLineY; | |
| 5087 super.redraw(rect.x, rect.y, rect.width, rect.height, false); | |
| 5088 renderer.disposeTextLayout(layout); | |
| 5089 return; | |
| 5090 } | |
| 5091 } | |
| 5092 | |
| 5093 /* Redraw start line from the start offset to the end of client area */ | |
|
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parents:
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diff
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|
5094 Rectangle startRect = layout.getBounds( start, getPreviousCharOffset(startLine, offsets[startIndex + 1]) ); |
| 25 | 5095 if (startRect.height is 0) { |
| 5096 Rectangle bounds = layout.getLineBounds(startIndex); | |
| 5097 startRect.x = bounds.width; | |
| 5098 startRect.y = bounds.y; | |
| 5099 startRect.height = bounds.height; | |
| 5100 } | |
| 5101 startRect.x += lineX; | |
| 5102 startRect.y += startLineY; | |
| 5103 startRect.width = clientAreaWidth - rightMargin - startRect.x; | |
| 5104 super.redraw(startRect.x, startRect.y, startRect.width, startRect.height, false); | |
| 5105 | |
| 5106 /* Redraw end line from the beginning of the line to the end offset */ | |
| 5107 if (startLine !is endLine) { | |
| 5108 renderer.disposeTextLayout(layout); | |
| 5109 layout = renderer.getTextLayout(endLine); | |
| 5110 offsets = layout.getLineOffsets(); | |
| 5111 } | |
| 5112 int endIndex = layout.getLineIndex(Math.min(end, layout.getText().length)); | |
|
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parents:
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diff
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|
5113 Rectangle endRect = layout.getBounds(offsets[endIndex], getPreviousCharOffset(endLine, end)); |
| 25 | 5114 if (endRect.height is 0) { |
| 5115 Rectangle bounds = layout.getLineBounds(endIndex); | |
| 5116 endRect.y = bounds.y; | |
| 5117 endRect.height = bounds.height; | |
| 5118 } | |
| 5119 endRect.x += lineX; | |
| 5120 endRect.y += getLinePixel(endLine); | |
| 5121 super.redraw(endRect.x, endRect.y, endRect.width, endRect.height, false); | |
| 5122 renderer.disposeTextLayout(layout); | |
| 5123 | |
| 5124 /* Redraw all lines in between start and end line */ | |
| 5125 int y = startRect.y + startRect.height; | |
| 5126 if (endRect.y > y) { | |
| 5127 super.redraw(leftMargin, y, clientAreaWidth - rightMargin - leftMargin, endRect.y - y, false); | |
| 5128 } | |
| 5129 } | |
| 5130 void handleCompositionOffset (Event event) { | |
|
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|
5131 int[1] trailing; |
| 25 | 5132 event.index = getOffsetAtPoint(event.x, event.y, trailing, true); |
| 5133 event.count = trailing[0]; | |
| 5134 } | |
| 5135 void handleCompositionSelection (Event event) { | |
| 5136 event.start = selection.x; | |
| 5137 event.end = selection.y; | |
| 5138 event.text = getSelectionText(); | |
| 5139 } | |
| 5140 void handleCompositionChanged(Event event) { | |
| 5141 String text = event.text; | |
| 5142 int start = event.start; | |
| 5143 int end = event.end; | |
| 5144 int length = text.length; | |
| 5145 if (length is ime.getCommitCount()) { | |
| 5146 content.replaceTextRange(start, end - start, ""); | |
| 5147 caretOffset = ime.getCompositionOffset(); | |
| 5148 caretWidth = 0; | |
| 5149 caretDirection = SWT.NULL; | |
| 5150 } else { | |
| 5151 content.replaceTextRange(start, end - start, text); | |
| 5152 caretOffset = ime.getCaretOffset(); | |
| 5153 if (ime.getWideCaret()) { | |
| 5154 start = ime.getCompositionOffset(); | |
| 5155 int lineIndex = getCaretLine(); | |
| 5156 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 5157 TextLayout layout = renderer.getTextLayout(lineIndex); | |
|
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parents:
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|
5158 caretWidth = layout.getBounds(start - lineOffset, getPreviousCharOffset(lineIndex, start + length - lineOffset)).width; |
| 25 | 5159 renderer.disposeTextLayout(layout); |
| 5160 } | |
| 5161 } | |
| 5162 showCaret(); | |
| 5163 } | |
| 5164 /** | |
| 5165 * Frees resources. | |
| 5166 */ | |
| 5167 void handleDispose(Event event) { | |
| 5168 removeListener(SWT.Dispose, listener); | |
| 5169 notifyListeners(SWT.Dispose, event); | |
| 5170 event.type = SWT.None; | |
| 5171 | |
| 5172 clipboard.dispose(); | |
| 5173 if (renderer !is null) { | |
| 5174 renderer.dispose(); | |
| 5175 renderer = null; | |
| 5176 } | |
| 5177 if (content !is null) { | |
| 5178 content.removeTextChangeListener(textChangeListener); | |
| 5179 content = null; | |
| 5180 } | |
| 5181 if (defaultCaret !is null) { | |
| 5182 defaultCaret.dispose(); | |
| 5183 defaultCaret = null; | |
| 5184 } | |
| 5185 if (leftCaretBitmap !is null) { | |
| 5186 leftCaretBitmap.dispose(); | |
| 5187 leftCaretBitmap = null; | |
| 5188 } | |
| 5189 if (rightCaretBitmap !is null) { | |
| 5190 rightCaretBitmap.dispose(); | |
| 5191 rightCaretBitmap = null; | |
| 5192 } | |
| 5193 if (isBidiCaret()) { | |
| 5194 BidiUtil.removeLanguageListener(this); | |
| 5195 } | |
| 5196 selectionBackground = null; | |
| 5197 selectionForeground = null; | |
| 5198 textChangeListener = null; | |
| 5199 selection = null; | |
| 5200 doubleClickSelection = null; | |
| 5201 keyActionMap = null; | |
| 5202 background = null; | |
| 5203 foreground = null; | |
| 5204 clipboard = null; | |
| 5205 } | |
| 5206 /** | |
| 5207 * Scrolls the widget horizontally. | |
| 5208 */ | |
| 5209 void handleHorizontalScroll(Event event) { | |
| 5210 int scrollPixel = getHorizontalBar().getSelection() - horizontalScrollOffset; | |
| 5211 scrollHorizontal(scrollPixel, false); | |
| 5212 } | |
| 5213 /** | |
| 5214 * If an action has been registered for the key stroke execute the action. | |
| 5215 * Otherwise, if a character has been entered treat it as new content. | |
| 5216 * | |
| 5217 * @param event keyboard event | |
| 5218 */ | |
| 5219 void handleKey(Event event) { | |
| 5220 int action; | |
| 5221 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 5222 if (event.keyCode !is 0) { | |
| 5223 // special key pressed (e.g., F1) | |
| 5224 action = getKeyBinding(event.keyCode | event.stateMask); | |
| 5225 } else { | |
| 5226 // character key pressed | |
| 5227 action = getKeyBinding(event.character | event.stateMask); | |
| 5228 if (action is SWT.NULL) { | |
| 5229 // see if we have a control character | |
| 5230 if ((event.stateMask & SWT.CTRL) !is 0 && (event.character >= 0) && event.character <= 31) { | |
| 5231 // get the character from the CTRL+char sequence, the control | |
| 5232 // key subtracts 64 from the value of the key that it modifies | |
| 5233 int c = event.character + 64; | |
| 5234 action = getKeyBinding(c | event.stateMask); | |
| 5235 } | |
| 5236 } | |
| 5237 } | |
| 5238 if (action is SWT.NULL) { | |
| 5239 bool ignore = false; | |
| 5240 | |
| 5241 if (IS_CARBON) { | |
| 5242 // Ignore accelerator key combinations (we do not want to | |
| 5243 // insert a character in the text in this instance). Do not | |
| 5244 // ignore COMMAND+ALT combinations since that key sequence | |
| 5245 // produces characters on the mac. | |
| 5246 ignore = (event.stateMask ^ SWT.COMMAND) is 0 || | |
| 5247 (event.stateMask ^ (SWT.COMMAND | SWT.SHIFT)) is 0; | |
| 5248 } else if (IS_MOTIF) { | |
| 5249 // Ignore accelerator key combinations (we do not want to | |
| 5250 // insert a character in the text in this instance). Do not | |
| 5251 // ignore ALT combinations since this key sequence | |
| 5252 // produces characters on motif. | |
| 5253 ignore = (event.stateMask ^ SWT.CTRL) is 0 || | |
| 5254 (event.stateMask ^ (SWT.CTRL | SWT.SHIFT)) is 0; | |
| 5255 } else { | |
| 5256 // Ignore accelerator key combinations (we do not want to | |
| 5257 // insert a character in the text in this instance). Don't | |
| 5258 // ignore CTRL+ALT combinations since that is the Alt Gr | |
| 5259 // key on some keyboards. See bug 20953. | |
| 5260 ignore = (event.stateMask ^ SWT.ALT) is 0 || | |
| 5261 (event.stateMask ^ SWT.CTRL) is 0 || | |
| 5262 (event.stateMask ^ (SWT.ALT | SWT.SHIFT)) is 0 || | |
| 5263 (event.stateMask ^ (SWT.CTRL | SWT.SHIFT)) is 0; | |
| 5264 } | |
| 5265 // -ignore anything below SPACE except for line delimiter keys and tab. | |
| 5266 // -ignore DEL | |
| 5267 if (!ignore && event.character > 31 && event.character !is SWT.DEL || | |
| 5268 event.character is SWT.CR || event.character is SWT.LF || | |
| 5269 event.character is TAB) { | |
| 5270 doContent(event.character); | |
| 5271 update(); | |
| 5272 } | |
| 5273 } else { | |
| 5274 invokeAction(action); | |
| 5275 } | |
| 5276 } | |
| 5277 /** | |
| 5278 * If a VerifyKey listener exists, verify that the key that was entered | |
| 5279 * should be processed. | |
| 5280 * | |
| 5281 * @param event keyboard event | |
| 5282 */ | |
| 5283 void handleKeyDown(Event event) { | |
| 5284 if (clipboardSelection is null) { | |
| 5285 clipboardSelection = new Point(selection.x, selection.y); | |
| 5286 } | |
| 5287 | |
| 5288 Event verifyEvent = new Event(); | |
| 5289 verifyEvent.character = event.character; | |
| 5290 verifyEvent.keyCode = event.keyCode; | |
| 5291 verifyEvent.stateMask = event.stateMask; | |
| 5292 verifyEvent.doit = true; | |
| 5293 notifyListeners(VerifyKey, verifyEvent); | |
| 5294 if (verifyEvent.doit) { | |
| 5295 handleKey(event); | |
| 5296 } | |
| 5297 } | |
| 5298 /** | |
| 5299 * Update the Selection Clipboard. | |
| 5300 * | |
| 5301 * @param event keyboard event | |
| 5302 */ | |
| 5303 void handleKeyUp(Event event) { | |
| 5304 if (clipboardSelection !is null) { | |
| 5305 if (clipboardSelection.x !is selection.x || clipboardSelection.y !is selection.y) { | |
| 5306 try { | |
| 5307 if (selection.y - selection.x > 0) { | |
| 5308 setClipboardContent(selection.x, selection.y - selection.x, DND.SELECTION_CLIPBOARD); | |
| 5309 } | |
| 5310 } catch (SWTError error) { | |
| 5311 // Copy to clipboard failed. This happens when another application | |
| 5312 // is accessing the clipboard while we copy. Ignore the error. | |
| 5313 // Fixes 1GDQAVN | |
| 5314 // Rethrow all other errors. Fixes bug 17578. | |
| 5315 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 5316 throw error; | |
| 5317 } | |
| 5318 } | |
| 5319 } | |
| 5320 } | |
| 5321 clipboardSelection = null; | |
| 5322 } | |
| 5323 /** | |
| 5324 * Updates the caret location and selection if mouse button 1 has been | |
| 5325 * pressed. | |
| 5326 */ | |
| 5327 void handleMouseDown(Event event) { | |
| 5328 //force focus (object support) | |
| 5329 forceFocus(); | |
| 5330 | |
| 5331 //drag detect | |
| 5332 if (dragDetect_ && checkDragDetect(event)) return; | |
| 5333 | |
| 5334 //paste clipboard selection | |
| 5335 if (event.button is 2) { | |
| 51 | 5336 String text = stringcast(getClipboardContent(DND.SELECTION_CLIPBOARD)); |
| 25 | 5337 if (text !is null && text.length > 0) { |
| 5338 // position cursor | |
| 5339 doMouseLocationChange(event.x, event.y, false); | |
| 5340 // insert text | |
| 5341 Event e = new Event(); | |
| 5342 e.start = selection.x; | |
| 5343 e.end = selection.y; | |
| 5344 e.text = getModelDelimitedText(text); | |
| 5345 sendKeyEvent(e); | |
| 5346 } | |
| 5347 } | |
| 5348 | |
| 5349 //set selection | |
| 5350 if ((event.button !is 1) || (IS_CARBON && (event.stateMask & SWT.MOD4) !is 0)) { | |
| 5351 return; | |
| 5352 } | |
| 5353 clickCount = event.count; | |
| 5354 if (clickCount is 1) { | |
| 5355 bool select = (event.stateMask & SWT.MOD2) !is 0; | |
| 5356 doMouseLocationChange(event.x, event.y, select); | |
| 5357 } else { | |
| 5358 if (doubleClickEnabled) { | |
| 5359 clearSelection(false); | |
| 5360 int offset = getOffsetAtPoint(event.x, event.y); | |
| 5361 int lineIndex = content.getLineAtOffset(offset); | |
| 5362 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 5363 int lineEnd = content.getCharCount(); | |
| 5364 if (lineIndex + 1 < content.getLineCount()) { | |
| 5365 lineEnd = content.getOffsetAtLine(lineIndex + 1); | |
| 5366 } | |
| 5367 int start, end; | |
| 5368 if ((clickCount & 1) is 0) { | |
| 5369 start = Math.max(0, getWordPrevious(offset, SWT.MOVEMENT_WORD_START)); | |
| 5370 end = Math.min(content.getCharCount(), getWordNext(start, SWT.MOVEMENT_WORD_END)); | |
| 5371 } else { | |
| 5372 start = lineOffset; | |
| 5373 end = lineEnd; | |
| 5374 } | |
| 5375 caretOffset = start; | |
| 5376 resetSelection(); | |
| 5377 caretOffset = end; | |
| 5378 showCaret(); | |
| 5379 doMouseSelection(); | |
| 5380 doubleClickSelection = new Point(selection.x, selection.y); | |
| 5381 } | |
| 5382 } | |
| 5383 } | |
| 5384 /** | |
| 5385 * Updates the caret location and selection if mouse button 1 is pressed | |
| 5386 * during the mouse move. | |
| 5387 */ | |
| 5388 void handleMouseMove(Event event) { | |
| 5389 if (clickCount is 0) return; | |
| 5390 doMouseLocationChange(event.x, event.y, true); | |
| 5391 update(); | |
| 5392 doAutoScroll(event); | |
| 5393 } | |
| 5394 /** | |
| 5395 * Autoscrolling ends when the mouse button is released. | |
| 5396 */ | |
| 5397 void handleMouseUp(Event event) { | |
| 5398 clickCount = 0; | |
| 5399 endAutoScroll(); | |
| 5400 if (event.button is 1) { | |
| 5401 try { | |
| 5402 if (selection.y - selection.x > 0) { | |
| 5403 setClipboardContent(selection.x, selection.y - selection.x, DND.SELECTION_CLIPBOARD); | |
| 5404 } | |
| 5405 } catch (SWTError error) { | |
| 5406 // Copy to clipboard failed. This happens when another application | |
| 5407 // is accessing the clipboard while we copy. Ignore the error. | |
| 5408 // Fixes 1GDQAVN | |
| 5409 // Rethrow all other errors. Fixes bug 17578. | |
| 5410 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 5411 throw error; | |
| 5412 } | |
| 5413 } | |
| 5414 } | |
| 5415 } | |
| 5416 /** | |
| 5417 * Renders the invalidated area specified in the paint event. | |
| 5418 * | |
| 5419 * @param event paint event | |
| 5420 */ | |
| 5421 void handlePaint(Event event) { | |
| 5422 if (event.width is 0 || event.height is 0) return; | |
| 5423 if (clientAreaWidth is 0 || clientAreaHeight is 0) return; | |
| 5424 | |
| 5425 int startLine = getLineIndex(event.y); | |
| 5426 int y = getLinePixel(startLine); | |
| 5427 int endY = event.y + event.height; | |
| 5428 GC gc = event.gc; | |
| 5429 Color background = getBackground(); | |
| 5430 Color foreground = getForeground(); | |
| 5431 if (endY > 0) { | |
| 5432 int lineCount = isSingleLine() ? 1 : content.getLineCount(); | |
| 5433 int x = leftMargin - horizontalScrollOffset; | |
| 5434 for (int i = startLine; y < endY && i < lineCount; i++) { | |
| 5435 y += renderer.drawLine(i, x, y, gc, background, foreground); | |
| 5436 } | |
| 5437 if (y < endY) { | |
| 5438 gc.setBackground(background); | |
| 5439 drawBackground(gc, 0, y, clientAreaWidth, endY - y); | |
| 5440 } | |
| 5441 } | |
| 5442 // fill the margin background | |
| 5443 gc.setBackground(background); | |
| 5444 if (topMargin > 0) { | |
| 5445 drawBackground(gc, 0, 0, clientAreaWidth, topMargin); | |
| 5446 } | |
| 5447 if (bottomMargin > 0) { | |
| 5448 drawBackground(gc, 0, clientAreaHeight - bottomMargin, clientAreaWidth, bottomMargin); | |
| 5449 } | |
| 5450 if (leftMargin > 0) { | |
| 5451 drawBackground(gc, 0, 0, leftMargin, clientAreaHeight); | |
| 5452 } | |
| 5453 if (rightMargin > 0) { | |
| 5454 drawBackground(gc, clientAreaWidth - rightMargin, 0, rightMargin, clientAreaHeight); | |
| 5455 } | |
| 5456 } | |
| 5457 /** | |
| 5458 * Recalculates the scroll bars. Rewraps all lines when in word | |
| 5459 * wrap mode. | |
| 5460 * | |
| 5461 * @param event resize event | |
| 5462 */ | |
| 5463 void handleResize(Event event) { | |
| 5464 int oldHeight = clientAreaHeight; | |
| 5465 int oldWidth = clientAreaWidth; | |
| 5466 Rectangle clientArea = getClientArea(); | |
| 5467 clientAreaHeight = clientArea.height; | |
| 5468 clientAreaWidth = clientArea.width; | |
| 5469 /* Redraw the old or new right/bottom margin if needed */ | |
| 5470 if (oldWidth !is clientAreaWidth) { | |
| 5471 if (rightMargin > 0) { | |
| 5472 int x = (oldWidth < clientAreaWidth ? oldWidth : clientAreaWidth) - rightMargin; | |
| 5473 super.redraw(x, 0, rightMargin, oldHeight, false); | |
| 5474 } | |
| 5475 } | |
| 5476 if (oldHeight !is clientAreaHeight) { | |
| 5477 if (bottomMargin > 0) { | |
| 5478 int y = (oldHeight < clientAreaHeight ? oldHeight : clientAreaHeight) - bottomMargin; | |
| 5479 super.redraw(0, y, oldWidth, bottomMargin, false); | |
| 5480 } | |
| 5481 } | |
| 5482 if (wordWrap) { | |
| 5483 if (oldWidth !is clientAreaWidth) { | |
| 5484 renderer.reset(0, content.getLineCount()); | |
| 5485 verticalScrollOffset = -1; | |
| 5486 renderer.calculateIdle(); | |
| 5487 super.redraw(); | |
| 5488 } | |
| 5489 if (oldHeight !is clientAreaHeight) { | |
| 5490 if (oldHeight is 0) topIndexY = 0; | |
| 5491 setScrollBars(true); | |
| 5492 } | |
| 5493 setCaretLocation(); | |
| 5494 } else { | |
| 5495 renderer.calculateClientArea(); | |
| 5496 setScrollBars(true); | |
| 5497 claimRightFreeSpace(); | |
| 5498 // StyledText allows any value for horizontalScrollOffset when clientArea is zero | |
| 5499 // in setHorizontalPixel() and setHorisontalOffset(). Fixes bug 168429. | |
| 5500 if (clientAreaWidth !is 0) { | |
| 5501 ScrollBar horizontalBar = getHorizontalBar(); | |
| 5502 if (horizontalBar !is null && horizontalBar.getVisible()) { | |
| 5503 if (horizontalScrollOffset !is horizontalBar.getSelection()) { | |
| 5504 horizontalBar.setSelection(horizontalScrollOffset); | |
| 5505 horizontalScrollOffset = horizontalBar.getSelection(); | |
| 5506 } | |
| 5507 } | |
| 5508 } | |
| 5509 } | |
| 5510 claimBottomFreeSpace(); | |
| 5511 //TODO FIX TOP INDEX DURING RESIZE | |
| 5512 // if (oldHeight !is clientAreaHeight || wordWrap) { | |
| 5513 // calculateTopIndex(0); | |
| 5514 // } | |
| 5515 } | |
| 5516 /** | |
| 5517 * Updates the caret position and selection and the scroll bars to reflect | |
| 5518 * the content change. | |
| 5519 */ | |
| 5520 void handleTextChanged(TextChangedEvent event) { | |
| 5521 int offset = ime.getCompositionOffset(); | |
| 5522 if (offset !is -1 && lastTextChangeStart < offset) { | |
| 5523 ime.setCompositionOffset(offset + lastTextChangeNewCharCount - lastTextChangeReplaceCharCount); | |
| 5524 } | |
| 5525 int firstLine = content.getLineAtOffset(lastTextChangeStart); | |
| 5526 resetCache(firstLine, 0); | |
| 5527 if (!isFixedLineHeight() && topIndex > firstLine) { | |
| 5528 topIndex = firstLine; | |
| 5529 topIndexY = 0; | |
| 5530 super.redraw(); | |
| 5531 } else { | |
| 5532 int lastLine = firstLine + lastTextChangeNewLineCount; | |
| 5533 int firstLineTop = getLinePixel(firstLine); | |
| 5534 int newLastLineBottom = getLinePixel(lastLine + 1); | |
| 5535 if (lastLineBottom !is newLastLineBottom) { | |
| 5536 super.redraw(); | |
| 5537 } else { | |
| 5538 super.redraw(0, firstLineTop, clientAreaWidth, newLastLineBottom - firstLineTop, false); | |
| 5539 redrawLinesBullet(renderer.redrawLines); | |
| 5540 } | |
| 5541 } | |
| 5542 renderer.redrawLines = null; | |
| 5543 // update selection/caret location after styles have been changed. | |
| 5544 // otherwise any text measuring could be incorrect | |
| 5545 // | |
| 5546 // also, this needs to be done after all scrolling. Otherwise, | |
| 5547 // selection redraw would be flushed during scroll which is wrong. | |
| 5548 // in some cases new text would be drawn in scroll source area even | |
| 5549 // though the intent is to scroll it. | |
| 5550 updateSelection(lastTextChangeStart, lastTextChangeReplaceCharCount, lastTextChangeNewCharCount); | |
| 5551 if (lastTextChangeReplaceLineCount > 0 || wordWrap) { | |
| 5552 claimBottomFreeSpace(); | |
| 5553 } | |
| 5554 if (lastTextChangeReplaceCharCount > 0) { | |
| 5555 claimRightFreeSpace(); | |
| 5556 } | |
| 5557 } | |
| 5558 /** | |
| 5559 * Updates the screen to reflect a pending content change. | |
| 5560 * | |
| 5561 * @param event .start the start offset of the change | |
| 5562 * @param event .newText text that is going to be inserted or empty String | |
| 5563 * if no text will be inserted | |
| 5564 * @param event .replaceCharCount length of text that is going to be replaced | |
| 5565 * @param event .newCharCount length of text that is going to be inserted | |
| 5566 * @param event .replaceLineCount number of lines that are going to be replaced | |
| 5567 * @param event .newLineCount number of new lines that are going to be inserted | |
| 5568 */ | |
| 5569 void handleTextChanging(TextChangingEvent event) { | |
| 5570 if (event.replaceCharCount < 0) { | |
| 5571 event.start += event.replaceCharCount; | |
| 5572 event.replaceCharCount *= -1; | |
| 5573 } | |
| 5574 lastTextChangeStart = event.start; | |
| 5575 lastTextChangeNewLineCount = event.newLineCount; | |
| 5576 lastTextChangeNewCharCount = event.newCharCount; | |
| 5577 lastTextChangeReplaceLineCount = event.replaceLineCount; | |
| 5578 lastTextChangeReplaceCharCount = event.replaceCharCount; | |
| 5579 int lineIndex = content.getLineAtOffset(event.start); | |
| 5580 int srcY = getLinePixel(lineIndex + event.replaceLineCount + 1); | |
| 5581 int destY = getLinePixel(lineIndex + 1) + event.newLineCount * renderer.getLineHeight(); | |
| 5582 lastLineBottom = destY; | |
| 5583 if (srcY < 0 && destY < 0) { | |
| 5584 lastLineBottom += srcY - destY; | |
| 5585 verticalScrollOffset += destY - srcY; | |
| 5586 calculateTopIndex(destY - srcY); | |
| 5587 setScrollBars(true); | |
| 5588 } else { | |
| 5589 scrollText(srcY, destY); | |
| 5590 } | |
| 5591 | |
| 5592 renderer.textChanging(event); | |
| 5593 | |
| 5594 // Update the caret offset if it is greater than the length of the content. | |
| 5595 // This is necessary since style range API may be called between the | |
| 5596 // handleTextChanging and handleTextChanged events and this API sets the | |
| 5597 // caretOffset. | |
| 5598 int newEndOfText = content.getCharCount() - event.replaceCharCount + event.newCharCount; | |
| 5599 if (caretOffset > newEndOfText) caretOffset = newEndOfText; | |
| 5600 } | |
| 5601 /** | |
| 5602 * Called when the widget content is set programmatically, overwriting | |
| 5603 * the old content. Resets the caret position, selection and scroll offsets. | |
| 5604 * Recalculates the content width and scroll bars. Redraws the widget. | |
| 5605 * | |
| 5606 * @param event text change event. | |
| 5607 */ | |
| 5608 void handleTextSet(TextChangedEvent event) { | |
| 5609 reset(); | |
| 5610 } | |
| 5611 /** | |
| 5612 * Called when a traversal key is pressed. | |
| 5613 * Allow tab next traversal to occur when the widget is in single | |
| 5614 * line mode or in multi line and non-editable mode . | |
| 5615 * When in editable multi line mode we want to prevent the tab | |
| 5616 * traversal and receive the tab key event instead. | |
| 5617 * | |
| 5618 * @param event the event | |
| 5619 */ | |
| 5620 void handleTraverse(Event event) { | |
| 5621 switch (event.detail) { | |
| 5622 case SWT.TRAVERSE_ESCAPE: | |
| 5623 case SWT.TRAVERSE_PAGE_NEXT: | |
| 5624 case SWT.TRAVERSE_PAGE_PREVIOUS: | |
| 5625 event.doit = true; | |
| 5626 break; | |
| 5627 case SWT.TRAVERSE_RETURN: | |
| 5628 case SWT.TRAVERSE_TAB_NEXT: | |
| 5629 case SWT.TRAVERSE_TAB_PREVIOUS: | |
| 5630 if ((getStyle() & SWT.SINGLE) !is 0) { | |
| 5631 event.doit = true; | |
| 5632 } else { | |
| 5633 if (!editable || (event.stateMask & SWT.MODIFIER_MASK) !is 0) { | |
| 5634 event.doit = true; | |
| 5635 } | |
| 5636 } | |
| 5637 break; | |
| 5638 default: | |
| 5639 } | |
| 5640 } | |
| 5641 /** | |
| 5642 * Scrolls the widget vertically. | |
| 5643 */ | |
| 5644 void handleVerticalScroll(Event event) { | |
| 5645 int scrollPixel = getVerticalBar().getSelection() - getVerticalScrollOffset(); | |
| 5646 scrollVertical(scrollPixel, false); | |
| 5647 } | |
| 5648 /** | |
| 5649 * Add accessibility support for the widget. | |
| 5650 */ | |
| 5651 void initializeAccessible() { | |
|
49
7a2dd761a8b2
more work until dmd 2.026 linux segfaults.
Frank Benoit <benoit@tionex.de>
parents:
48
diff
changeset
|
5652 Accessible accessible = getAccessible(); |
| 25 | 5653 accessible.addAccessibleListener(new class() AccessibleAdapter { |
| 5654 public void getName (AccessibleEvent e) { | |
| 5655 String name = null; | |
| 5656 Label label = getAssociatedLabel (); | |
| 5657 if (label !is null) { | |
| 5658 name = stripMnemonic (label.getText()); | |
| 5659 } | |
| 5660 e.result = name; | |
| 5661 } | |
| 5662 public void getHelp(AccessibleEvent e) { | |
| 5663 e.result = getToolTipText(); | |
| 5664 } | |
| 5665 public void getKeyboardShortcut(AccessibleEvent e) { | |
| 5666 String shortcut = null; | |
| 5667 Label label = getAssociatedLabel (); | |
| 5668 if (label !is null) { | |
| 5669 String text = label.getText (); | |
| 5670 if (text !is null) { | |
| 5671 dchar mnemonic = _findMnemonic (text); | |
| 5672 if (mnemonic !is '\0') { | |
|
120
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Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
113
diff
changeset
|
5673 shortcut = "Alt+"~dcharToString(mnemonic); //$NON-NLS-1$ |
| 25 | 5674 } |
| 5675 } | |
| 5676 } | |
| 5677 e.result = shortcut; | |
| 5678 } | |
| 5679 }); | |
| 5680 accessible.addAccessibleTextListener(new class() AccessibleTextAdapter { | |
| 5681 public void getCaretOffset(AccessibleTextEvent e) { | |
| 5682 e.offset = this.outer.getCaretOffset(); | |
| 5683 } | |
| 5684 public void getSelectionRange(AccessibleTextEvent e) { | |
| 5685 Point selection = this.outer.getSelectionRange(); | |
| 5686 e.offset = selection.x; | |
| 5687 e.length = selection.y; | |
| 5688 } | |
| 5689 }); | |
| 5690 accessible.addAccessibleControlListener(new class() AccessibleControlAdapter { | |
| 5691 public void getRole(AccessibleControlEvent e) { | |
| 5692 e.detail = ACC.ROLE_TEXT; | |
| 5693 } | |
| 5694 public void getState(AccessibleControlEvent e) { | |
| 5695 int state = 0; | |
| 5696 if (isEnabled()) state |= ACC.STATE_FOCUSABLE; | |
| 5697 if (isFocusControl()) state |= ACC.STATE_FOCUSED; | |
| 5698 if (!isVisible()) state |= ACC.STATE_INVISIBLE; | |
| 5699 if (!getEditable()) state |= ACC.STATE_READONLY; | |
| 5700 e.detail = state; | |
| 5701 } | |
| 5702 public void getValue(AccessibleControlEvent e) { | |
| 5703 e.result = this.outer.getText(); | |
| 5704 } | |
| 5705 }); | |
| 5706 addListener(SWT.FocusIn, new class(accessible) Listener { | |
| 5707 Accessible acc; | |
| 5708 this( Accessible acc ){ this.acc = acc; } | |
| 5709 public void handleEvent(Event event) { | |
| 5710 acc.setFocus(ACC.CHILDID_SELF); | |
| 5711 } | |
| 5712 }); | |
| 5713 } | |
| 5714 /* | |
| 5715 * Return the Label immediately preceding the receiver in the z-order, | |
| 5716 * or null if none. | |
| 5717 */ | |
| 5718 Label getAssociatedLabel () { | |
| 5719 Control[] siblings = getParent ().getChildren (); | |
| 5720 for (int i = 0; i < siblings.length; i++) { | |
| 5721 if (siblings [i] is this) { | |
| 5722 if (i > 0 && ( null !is cast(Label)siblings [i-1])) { | |
| 5723 return cast(Label) siblings [i-1]; | |
| 5724 } | |
| 5725 } | |
| 5726 } | |
| 5727 return null; | |
| 5728 } | |
| 5729 String stripMnemonic (String string) { | |
| 5730 int index = 0; | |
| 5731 int length_ = string.length; | |
| 5732 do { | |
| 5733 while ((index < length_) && (string[index] !is '&')) index++; | |
| 5734 if (++index >= length_) return string; | |
| 5735 if (string[index] !is '&') { | |
| 5736 return string.substring(0, index-1) ~ string.substring(index, length_); | |
| 5737 } | |
| 5738 index++; | |
| 5739 } while (index < length_); | |
| 5740 return string; | |
| 5741 } | |
| 5742 /* | |
| 5743 * Return the lowercase of the first non-'&' character following | |
| 5744 * an '&' character in the given string. If there are no '&' | |
| 5745 * characters in the given string, return '\0'. | |
| 5746 */ | |
| 5747 dchar _findMnemonic (String string) { | |
| 5748 if (string is null) return '\0'; | |
| 5749 int index = 0; | |
| 5750 int length_ = string.length; | |
| 5751 do { | |
| 5752 while (index < length_ && string[index] !is '&') index++; | |
| 5753 if (++index >= length_) return '\0'; | |
|
120
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Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
113
diff
changeset
|
5754 if (string[index] !is '&') return Character.toLowerCase (string.dcharAt (index)); |
| 25 | 5755 index++; |
| 5756 } while (index < length_); | |
| 5757 return '\0'; | |
| 5758 } | |
| 5759 /** | |
| 5760 * Executes the action. | |
| 5761 * | |
| 5762 * @param action one of the actions defined in ST.java | |
| 5763 */ | |
| 5764 public void invokeAction(int action) { | |
| 5765 checkWidget(); | |
| 5766 updateCaretDirection = true; | |
| 5767 switch (action) { | |
| 5768 // Navigation | |
| 5769 case ST.LINE_UP: | |
| 5770 doLineUp(false); | |
| 5771 clearSelection(true); | |
| 5772 break; | |
| 5773 case ST.LINE_DOWN: | |
| 5774 doLineDown(false); | |
| 5775 clearSelection(true); | |
| 5776 break; | |
| 5777 case ST.LINE_START: | |
| 5778 doLineStart(); | |
| 5779 clearSelection(true); | |
| 5780 break; | |
| 5781 case ST.LINE_END: | |
| 5782 doLineEnd(); | |
| 5783 clearSelection(true); | |
| 5784 break; | |
| 5785 case ST.COLUMN_PREVIOUS: | |
| 5786 doCursorPrevious(); | |
| 5787 clearSelection(true); | |
| 5788 break; | |
| 5789 case ST.COLUMN_NEXT: | |
| 5790 doCursorNext(); | |
| 5791 clearSelection(true); | |
| 5792 break; | |
| 5793 case ST.PAGE_UP: | |
| 5794 doPageUp(false, -1); | |
| 5795 clearSelection(true); | |
| 5796 break; | |
| 5797 case ST.PAGE_DOWN: | |
| 5798 doPageDown(false, -1); | |
| 5799 clearSelection(true); | |
| 5800 break; | |
| 5801 case ST.WORD_PREVIOUS: | |
| 5802 doWordPrevious(); | |
| 5803 clearSelection(true); | |
| 5804 break; | |
| 5805 case ST.WORD_NEXT: | |
| 5806 doWordNext(); | |
| 5807 clearSelection(true); | |
| 5808 break; | |
| 5809 case ST.TEXT_START: | |
| 5810 doContentStart(); | |
| 5811 clearSelection(true); | |
| 5812 break; | |
| 5813 case ST.TEXT_END: | |
| 5814 doContentEnd(); | |
| 5815 clearSelection(true); | |
| 5816 break; | |
| 5817 case ST.WINDOW_START: | |
| 5818 doPageStart(); | |
| 5819 clearSelection(true); | |
| 5820 break; | |
| 5821 case ST.WINDOW_END: | |
| 5822 doPageEnd(); | |
| 5823 clearSelection(true); | |
| 5824 break; | |
| 5825 // Selection | |
| 5826 case ST.SELECT_LINE_UP: | |
| 5827 doSelectionLineUp(); | |
| 5828 break; | |
| 5829 case ST.SELECT_ALL: | |
| 5830 selectAll(); | |
| 5831 break; | |
| 5832 case ST.SELECT_LINE_DOWN: | |
| 5833 doSelectionLineDown(); | |
| 5834 break; | |
| 5835 case ST.SELECT_LINE_START: | |
| 5836 doLineStart(); | |
| 5837 doSelection(ST.COLUMN_PREVIOUS); | |
| 5838 break; | |
| 5839 case ST.SELECT_LINE_END: | |
| 5840 doLineEnd(); | |
| 5841 doSelection(ST.COLUMN_NEXT); | |
| 5842 break; | |
| 5843 case ST.SELECT_COLUMN_PREVIOUS: | |
| 5844 doSelectionCursorPrevious(); | |
| 5845 doSelection(ST.COLUMN_PREVIOUS); | |
| 5846 break; | |
| 5847 case ST.SELECT_COLUMN_NEXT: | |
| 5848 doSelectionCursorNext(); | |
| 5849 doSelection(ST.COLUMN_NEXT); | |
| 5850 break; | |
| 5851 case ST.SELECT_PAGE_UP: | |
| 5852 doSelectionPageUp(-1); | |
| 5853 break; | |
| 5854 case ST.SELECT_PAGE_DOWN: | |
| 5855 doSelectionPageDown(-1); | |
| 5856 break; | |
| 5857 case ST.SELECT_WORD_PREVIOUS: | |
| 5858 doSelectionWordPrevious(); | |
| 5859 doSelection(ST.COLUMN_PREVIOUS); | |
| 5860 break; | |
| 5861 case ST.SELECT_WORD_NEXT: | |
| 5862 doSelectionWordNext(); | |
| 5863 doSelection(ST.COLUMN_NEXT); | |
| 5864 break; | |
| 5865 case ST.SELECT_TEXT_START: | |
| 5866 doContentStart(); | |
| 5867 doSelection(ST.COLUMN_PREVIOUS); | |
| 5868 break; | |
| 5869 case ST.SELECT_TEXT_END: | |
| 5870 doContentEnd(); | |
| 5871 doSelection(ST.COLUMN_NEXT); | |
| 5872 break; | |
| 5873 case ST.SELECT_WINDOW_START: | |
| 5874 doPageStart(); | |
| 5875 doSelection(ST.COLUMN_PREVIOUS); | |
| 5876 break; | |
| 5877 case ST.SELECT_WINDOW_END: | |
| 5878 doPageEnd(); | |
| 5879 doSelection(ST.COLUMN_NEXT); | |
| 5880 break; | |
| 5881 // Modification | |
| 5882 case ST.CUT: | |
| 5883 cut(); | |
| 5884 break; | |
| 5885 case ST.COPY: | |
| 5886 copy(); | |
| 5887 break; | |
| 5888 case ST.PASTE: | |
| 5889 paste(); | |
| 5890 break; | |
| 5891 case ST.DELETE_PREVIOUS: | |
| 5892 doBackspace(); | |
| 5893 break; | |
| 5894 case ST.DELETE_NEXT: | |
| 5895 doDelete(); | |
| 5896 break; | |
| 5897 case ST.DELETE_WORD_PREVIOUS: | |
| 5898 doDeleteWordPrevious(); | |
| 5899 break; | |
| 5900 case ST.DELETE_WORD_NEXT: | |
| 5901 doDeleteWordNext(); | |
| 5902 break; | |
| 5903 // Miscellaneous | |
| 5904 case ST.TOGGLE_OVERWRITE: | |
| 5905 overwrite = !overwrite; // toggle insert/overwrite mode | |
| 5906 break; | |
| 5907 default: | |
| 5908 } | |
| 5909 } | |
| 5910 /** | |
| 5911 * Temporary until SWT provides this | |
| 5912 */ | |
| 5913 bool isBidi() { | |
| 5914 return IS_GTK || IS_CARBON || BidiUtil.isBidiPlatform() || isMirrored_; | |
| 5915 } | |
| 5916 bool isBidiCaret() { | |
| 5917 return BidiUtil.isBidiPlatform(); | |
| 5918 } | |
| 5919 bool isFixedLineHeight() { | |
| 5920 return fixedLineHeight; | |
| 5921 } | |
| 5922 /** | |
| 5923 * Returns whether the given offset is inside a multi byte line delimiter. | |
| 5924 * Example: | |
| 5925 * "Line1\r\n" isLineDelimiter(5) is false but isLineDelimiter(6) is true | |
| 5926 * | |
| 5927 * @return true if the given offset is inside a multi byte line delimiter. | |
| 5928 * false if the given offset is before or after a line delimiter. | |
| 5929 */ | |
| 5930 bool isLineDelimiter(int offset) { | |
| 5931 int line = content.getLineAtOffset(offset); | |
| 5932 int lineOffset = content.getOffsetAtLine(line); | |
| 5933 int offsetInLine = offset - lineOffset; | |
| 5934 // offsetInLine will be greater than line length if the line | |
| 5935 // delimiter is longer than one character and the offset is set | |
| 5936 // in between parts of the line delimiter. | |
| 5937 return offsetInLine > content.getLine(line).length; | |
| 5938 } | |
| 5939 /** | |
| 5940 * Returns whether the widget is mirrored (right oriented/right to left | |
| 5941 * writing order). | |
| 5942 * | |
| 5943 * @return isMirrored true=the widget is right oriented, false=the widget | |
| 5944 * is left oriented | |
| 5945 */ | |
| 5946 bool isMirrored() { | |
| 5947 return isMirrored_; | |
| 5948 } | |
| 5949 /** | |
| 5950 * Returns whether the widget can have only one line. | |
| 5951 * | |
| 5952 * @return true if widget can have only one line, false if widget can have | |
| 5953 * multiple lines | |
| 5954 */ | |
| 5955 bool isSingleLine() { | |
| 5956 return (getStyle() & SWT.SINGLE) !is 0; | |
| 5957 } | |
| 5958 /** | |
| 5959 * Sends the specified verify event, replace/insert text as defined by | |
| 5960 * the event and send a modify event. | |
| 5961 * | |
| 5962 * @param event the text change event. | |
| 5963 * <ul> | |
| 5964 * <li>event.start - the replace start offset</li> | |
| 5965 * <li>event.end - the replace end offset</li> | |
| 5966 * <li>event.text - the new text</li> | |
| 5967 * </ul> | |
| 5968 * @param updateCaret whether or not he caret should be set behind | |
| 5969 * the new text | |
| 5970 */ | |
| 5971 void modifyContent(Event event, bool updateCaret) { | |
| 5972 event.doit = true; | |
| 5973 notifyListeners(SWT.Verify, event); | |
| 5974 if (event.doit) { | |
| 5975 StyledTextEvent styledTextEvent = null; | |
| 5976 int replacedLength = event.end - event.start; | |
| 5977 if (isListening(ExtendedModify)) { | |
| 5978 styledTextEvent = new StyledTextEvent(content); | |
| 5979 styledTextEvent.start = event.start; | |
| 5980 styledTextEvent.end = event.start + event.text.length; | |
| 5981 styledTextEvent.text = content.getTextRange(event.start, replacedLength); | |
| 5982 } | |
| 5983 if (updateCaret) { | |
| 5984 //Fix advancing flag for delete/backspace key on direction boundary | |
| 5985 if (event.text.length is 0) { | |
| 5986 int lineIndex = content.getLineAtOffset(event.start); | |
| 5987 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 5988 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 5989 int levelStart = layout.getLevel(event.start - lineOffset); | |
| 5990 int lineIndexEnd = content.getLineAtOffset(event.end); | |
| 5991 if (lineIndex !is lineIndexEnd) { | |
| 5992 renderer.disposeTextLayout(layout); | |
| 5993 lineOffset = content.getOffsetAtLine(lineIndexEnd); | |
| 5994 layout = renderer.getTextLayout(lineIndexEnd); | |
| 5995 } | |
| 5996 int levelEnd = layout.getLevel(event.end - lineOffset); | |
| 5997 renderer.disposeTextLayout(layout); | |
| 5998 if (levelStart !is levelEnd) { | |
| 5999 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 6000 } else { | |
| 6001 caretAlignment = OFFSET_LEADING; | |
| 6002 } | |
| 6003 } | |
| 6004 } | |
| 6005 content.replaceTextRange(event.start, replacedLength, event.text); | |
| 6006 // set the caret position prior to sending the modify event. | |
| 6007 // fixes 1GBB8NJ | |
| 6008 if (updateCaret) { | |
| 6009 // always update the caret location. fixes 1G8FODP | |
| 6010 setSelection(event.start + event.text.length, 0, true); | |
| 6011 showCaret(); | |
| 6012 } | |
| 6013 sendModifyEvent(event); | |
| 6014 if (isListening(ExtendedModify)) { | |
| 6015 notifyListeners(ExtendedModify, styledTextEvent); | |
| 6016 } | |
| 6017 } | |
| 6018 } | |
| 6019 void paintObject(GC gc, int x, int y, int ascent, int descent, StyleRange style, Bullet bullet, int bulletIndex) { | |
| 6020 if (isListening(PaintObject)) { | |
| 6021 StyledTextEvent event = new StyledTextEvent (content) ; | |
| 6022 event.gc = gc; | |
| 6023 event.x = x; | |
| 6024 event.y = y; | |
| 6025 event.ascent = ascent; | |
| 6026 event.descent = descent; | |
| 6027 event.style = style; | |
| 6028 event.bullet = bullet; | |
| 6029 event.bulletIndex = bulletIndex; | |
| 6030 notifyListeners(PaintObject, event); | |
| 6031 } | |
| 6032 } | |
| 6033 /** | |
| 6034 * Replaces the selection with the text on the <code>DND.CLIPBOARD</code> | |
| 6035 * clipboard or, if there is no selection, inserts the text at the current | |
| 6036 * caret offset. If the widget has the SWT.SINGLE style and the | |
| 6037 * clipboard text contains more than one line, only the first line without | |
| 6038 * line delimiters is inserted in the widget. | |
| 6039 * | |
| 6040 * @exception SWTException <ul> | |
| 6041 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6042 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6043 * </ul> | |
| 6044 */ | |
| 6045 public void paste(){ | |
| 6046 checkWidget(); | |
| 51 | 6047 String text = stringcast( getClipboardContent(DND.CLIPBOARD)); |
| 25 | 6048 if (text !is null && text.length > 0) { |
| 6049 Event event = new Event(); | |
| 6050 event.start = selection.x; | |
| 6051 event.end = selection.y; | |
| 6052 event.text = getModelDelimitedText(text); | |
| 6053 sendKeyEvent(event); | |
| 6054 } | |
| 6055 } | |
| 6056 /** | |
| 6057 * Prints the widget's text to the default printer. | |
| 6058 * | |
| 6059 * @exception SWTException <ul> | |
| 6060 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6061 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6062 * </ul> | |
| 6063 */ | |
| 6064 public void print() { | |
| 6065 checkWidget(); | |
| 6066 Printer printer = new Printer(); | |
| 6067 StyledTextPrintOptions options = new StyledTextPrintOptions(); | |
| 6068 options.printTextForeground = true; | |
| 6069 options.printTextBackground = true; | |
| 6070 options.printTextFontStyle = true; | |
| 6071 options.printLineBackground = true; | |
| 6072 (new Printing(this, printer, options)).run(); | |
| 6073 printer.dispose(); | |
| 6074 } | |
| 6075 /** | |
| 6076 * Returns a runnable that will print the widget's text | |
| 6077 * to the specified printer. | |
| 6078 * <p> | |
| 6079 * The runnable may be run in a non-UI thread. | |
| 6080 * </p> | |
| 6081 * | |
| 6082 * @param printer the printer to print to | |
| 6083 * | |
| 6084 * @return a <code>Runnable</code> for printing the receiver's text | |
| 6085 * | |
| 6086 * @exception SWTException <ul> | |
| 6087 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6088 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6089 * </ul> | |
| 6090 * @exception IllegalArgumentException <ul> | |
| 6091 * <li>ERROR_NULL_ARGUMENT when printer is null</li> | |
| 6092 * </ul> | |
| 6093 */ | |
| 6094 public Runnable print(Printer printer) { | |
| 6095 checkWidget(); | |
| 6096 if (printer is null) { | |
| 6097 SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6098 } | |
| 6099 StyledTextPrintOptions options = new StyledTextPrintOptions(); | |
| 6100 options.printTextForeground = true; | |
| 6101 options.printTextBackground = true; | |
| 6102 options.printTextFontStyle = true; | |
| 6103 options.printLineBackground = true; | |
| 6104 return print(printer, options); | |
| 6105 } | |
| 6106 /** | |
| 6107 * Returns a runnable that will print the widget's text | |
| 6108 * to the specified printer. | |
| 6109 * <p> | |
| 6110 * The runnable may be run in a non-UI thread. | |
| 6111 * </p> | |
| 6112 * | |
| 6113 * @param printer the printer to print to | |
| 6114 * @param options print options to use during printing | |
| 6115 * | |
| 6116 * @return a <code>Runnable</code> for printing the receiver's text | |
| 6117 * | |
| 6118 * @exception SWTException <ul> | |
| 6119 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6120 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6121 * </ul> | |
| 6122 * @exception IllegalArgumentException <ul> | |
| 6123 * <li>ERROR_NULL_ARGUMENT when printer or options is null</li> | |
| 6124 * </ul> | |
| 6125 * @since 2.1 | |
| 6126 */ | |
| 6127 public Runnable print(Printer printer, StyledTextPrintOptions options) { | |
| 6128 checkWidget(); | |
| 6129 if (printer is null || options is null) { | |
| 6130 SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6131 } | |
| 6132 return new Printing(this, printer, options); | |
| 6133 } | |
| 6134 /** | |
| 6135 * Causes the entire bounds of the receiver to be marked | |
| 6136 * as needing to be redrawn. The next time a paint request | |
| 6137 * is processed, the control will be completely painted. | |
| 6138 * <p> | |
| 6139 * Recalculates the content width for all lines in the bounds. | |
| 6140 * When a <code>LineStyleListener</code> is used a redraw call | |
| 6141 * is the only notification to the widget that styles have changed | |
| 6142 * and that the content width may have changed. | |
| 6143 * </p> | |
| 6144 * | |
| 6145 * @exception SWTException <ul> | |
| 6146 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6147 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6148 * </ul> | |
| 6149 * | |
| 6150 * @see Control#update() | |
| 6151 */ | |
| 6152 public override void redraw() { | |
| 6153 super.redraw(); | |
| 6154 int itemCount = getPartialBottomIndex() - topIndex + 1; | |
| 6155 renderer.reset(topIndex, itemCount); | |
| 6156 renderer.calculate(topIndex, itemCount); | |
| 6157 setScrollBars(false); | |
| 6158 } | |
| 6159 /** | |
| 6160 * Causes the rectangular area of the receiver specified by | |
| 6161 * the arguments to be marked as needing to be redrawn. | |
| 6162 * The next time a paint request is processed, that area of | |
| 6163 * the receiver will be painted. If the <code>all</code> flag | |
| 6164 * is <code>true</code>, any children of the receiver which | |
| 6165 * intersect with the specified area will also paint their | |
| 6166 * intersecting areas. If the <code>all</code> flag is | |
| 6167 * <code>false</code>, the children will not be painted. | |
| 6168 * <p> | |
| 6169 * Marks the content width of all lines in the specified rectangle | |
| 6170 * as unknown. Recalculates the content width of all visible lines. | |
| 6171 * When a <code>LineStyleListener</code> is used a redraw call | |
| 6172 * is the only notification to the widget that styles have changed | |
| 6173 * and that the content width may have changed. | |
| 6174 * </p> | |
| 6175 * | |
| 6176 * @param x the x coordinate of the area to draw | |
| 6177 * @param y the y coordinate of the area to draw | |
| 6178 * @param width the width of the area to draw | |
| 6179 * @param height the height of the area to draw | |
| 6180 * @param all <code>true</code> if children should redraw, and <code>false</code> otherwise | |
| 6181 * | |
| 6182 * @exception SWTException <ul> | |
| 6183 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6184 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6185 * </ul> | |
| 6186 * | |
| 6187 * @see Control#update() | |
| 6188 */ | |
| 6189 public override void redraw(int x, int y, int width, int height, bool all) { | |
| 6190 super.redraw(x, y, width, height, all); | |
| 6191 if (height > 0) { | |
| 6192 int firstLine = getLineIndex(y); | |
| 6193 int lastLine = getLineIndex(y + height); | |
| 6194 resetCache(firstLine, lastLine - firstLine + 1); | |
| 6195 } | |
| 6196 } | |
| 6197 void redrawLines(int startLine, int lineCount) { | |
| 6198 // do nothing if redraw range is completely invisible | |
| 6199 int partialBottomIndex = getPartialBottomIndex(); | |
| 6200 if (startLine > partialBottomIndex || startLine + lineCount - 1 < topIndex) { | |
| 6201 return; | |
| 6202 } | |
| 6203 // only redraw visible lines | |
| 6204 if (startLine < topIndex) { | |
| 6205 lineCount -= topIndex - startLine; | |
| 6206 startLine = topIndex; | |
| 6207 } | |
| 6208 if (startLine + lineCount - 1 > partialBottomIndex) { | |
| 6209 lineCount = partialBottomIndex - startLine + 1; | |
| 6210 } | |
| 6211 startLine -= topIndex; | |
| 6212 int redrawTop = getLinePixel(startLine); | |
| 6213 int redrawBottom = getLinePixel(startLine + lineCount); | |
| 6214 int redrawWidth = clientAreaWidth - leftMargin - rightMargin; | |
| 6215 super.redraw(leftMargin, redrawTop, redrawWidth, redrawBottom - redrawTop, true); | |
| 6216 } | |
| 6217 void redrawLinesBullet (int[] redrawLines) { | |
| 6218 if (redrawLines is null) return; | |
| 6219 int topIndex = getPartialTopIndex(); | |
| 6220 int bottomIndex = getPartialBottomIndex(); | |
| 6221 for (int i = 0; i < redrawLines.length; i++) { | |
| 6222 int lineIndex = redrawLines[i]; | |
| 6223 if (!(topIndex <= lineIndex && lineIndex <= bottomIndex)) continue; | |
| 6224 int width = -1; | |
| 6225 Bullet bullet = renderer.getLineBullet(lineIndex, null); | |
| 6226 if (bullet !is null) { | |
| 6227 StyleRange style = bullet.style; | |
| 6228 GlyphMetrics metrics = style.metrics; | |
| 6229 width = metrics.width; | |
| 6230 } | |
| 6231 if (width is -1) width = getClientArea().width; | |
| 6232 int height = renderer.getLineHeight(lineIndex); | |
| 6233 int y = getLinePixel(lineIndex); | |
| 6234 super.redraw(0, y, width, height, false); | |
| 6235 } | |
| 6236 } | |
| 6237 /** | |
| 6238 * Redraws the specified text range. | |
| 6239 * | |
| 6240 * @param start offset of the first character to redraw | |
| 6241 * @param length number of characters to redraw | |
| 6242 * @param clearBackground true if the background should be cleared as | |
| 6243 * part of the redraw operation. If true, the entire redraw range will | |
| 6244 * be cleared before anything is redrawn. If the redraw range includes | |
| 6245 * the last character of a line (i.e., the entire line is redrawn) the | |
| 6246 * line is cleared all the way to the right border of the widget. | |
| 6247 * The redraw operation will be faster and smoother if clearBackground | |
| 6248 * is set to false. Whether or not the flag can be set to false depends | |
| 6249 * on the type of change that has taken place. If font styles or | |
| 6250 * background colors for the redraw range have changed, clearBackground | |
| 6251 * should be set to true. If only foreground colors have changed for | |
| 6252 * the redraw range, clearBackground can be set to false. | |
| 6253 * @exception SWTException <ul> | |
| 6254 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6255 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6256 * </ul> | |
| 6257 * @exception IllegalArgumentException <ul> | |
| 6258 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 6259 * </ul> | |
| 6260 */ | |
| 6261 public void redrawRange(int start, int length, bool clearBackground) { | |
| 6262 checkWidget(); | |
| 6263 int end = start + length; | |
| 6264 int contentLength = content.getCharCount(); | |
| 6265 if (start > end || start < 0 || end > contentLength) { | |
| 6266 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 6267 } | |
| 6268 int firstLine = content.getLineAtOffset(start); | |
| 6269 int lastLine = content.getLineAtOffset(end); | |
| 6270 resetCache(firstLine, lastLine - firstLine + 1); | |
| 6271 internalRedrawRange(start, length); | |
| 6272 } | |
| 6273 /** | |
| 6274 * Removes the specified bidirectional segment listener. | |
| 6275 * | |
| 6276 * @param listener the listener which should no longer be notified | |
| 6277 * | |
| 6278 * @exception SWTException <ul> | |
| 6279 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6280 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6281 * </ul> | |
| 6282 * @exception IllegalArgumentException <ul> | |
| 6283 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6284 * </ul> | |
| 6285 * | |
| 6286 * @since 2.0 | |
| 6287 */ | |
| 6288 public void removeBidiSegmentListener(BidiSegmentListener listener) { | |
| 6289 checkWidget(); | |
| 6290 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6291 removeListener(LineGetSegments, listener); | |
| 6292 } | |
| 6293 /** | |
| 6294 * Removes the specified extended modify listener. | |
| 6295 * | |
| 6296 * @param extendedModifyListener the listener which should no longer be notified | |
| 6297 * | |
| 6298 * @exception SWTException <ul> | |
| 6299 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6300 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6301 * </ul> | |
| 6302 * @exception IllegalArgumentException <ul> | |
| 6303 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6304 * </ul> | |
| 6305 */ | |
| 6306 public void removeExtendedModifyListener(ExtendedModifyListener extendedModifyListener) { | |
| 6307 checkWidget(); | |
| 6308 if (extendedModifyListener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6309 removeListener(ExtendedModify, extendedModifyListener); | |
| 6310 } | |
| 6311 /** | |
| 6312 * Removes the specified line background listener. | |
| 6313 * | |
| 6314 * @param listener the listener which should no longer be notified | |
| 6315 * | |
| 6316 * @exception SWTException <ul> | |
| 6317 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6318 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6319 * </ul> | |
| 6320 * @exception IllegalArgumentException <ul> | |
| 6321 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6322 * </ul> | |
| 6323 */ | |
| 6324 public void removeLineBackgroundListener(LineBackgroundListener listener) { | |
| 6325 checkWidget(); | |
| 6326 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6327 removeListener(LineGetBackground, listener); | |
| 6328 } | |
| 6329 /** | |
| 6330 * Removes the specified line style listener. | |
| 6331 * | |
| 6332 * @param listener the listener which should no longer be notified | |
| 6333 * | |
| 6334 * @exception SWTException <ul> | |
| 6335 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6336 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6337 * </ul> | |
| 6338 * @exception IllegalArgumentException <ul> | |
| 6339 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6340 * </ul> | |
| 6341 */ | |
| 6342 public void removeLineStyleListener(LineStyleListener listener) { | |
| 6343 checkWidget(); | |
| 6344 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6345 removeListener(LineGetStyle, listener); | |
| 6346 } | |
| 6347 /** | |
| 6348 * Removes the specified modify listener. | |
| 6349 * | |
| 6350 * @param modifyListener the listener which should no longer be notified | |
| 6351 * | |
| 6352 * @exception SWTException <ul> | |
| 6353 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6354 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6355 * </ul> | |
| 6356 * @exception IllegalArgumentException <ul> | |
| 6357 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6358 * </ul> | |
| 6359 */ | |
| 6360 public void removeModifyListener(ModifyListener modifyListener) { | |
| 6361 checkWidget(); | |
| 6362 if (modifyListener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6363 removeListener(SWT.Modify, modifyListener); | |
| 6364 } | |
| 6365 /** | |
| 6366 * Removes the specified listener. | |
| 6367 * | |
| 6368 * @param listener the listener which should no longer be notified | |
| 6369 * | |
| 6370 * @exception SWTException <ul> | |
| 6371 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6372 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6373 * </ul> | |
| 6374 * @exception IllegalArgumentException <ul> | |
| 6375 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6376 * </ul> | |
| 6377 * @since 3.2 | |
| 6378 */ | |
| 6379 public void removePaintObjectListener(PaintObjectListener listener) { | |
| 6380 checkWidget(); | |
| 6381 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6382 removeListener(PaintObject, listener); | |
| 6383 } | |
| 6384 /** | |
| 6385 * Removes the listener from the collection of listeners who will | |
| 6386 * be notified when the user changes the receiver's selection. | |
| 6387 * | |
| 6388 * @param listener the listener which should no longer be notified | |
| 6389 * | |
| 6390 * @exception IllegalArgumentException <ul> | |
| 6391 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 6392 * </ul> | |
| 6393 * @exception SWTException <ul> | |
| 6394 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6395 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6396 * </ul> | |
| 6397 * | |
| 6398 * @see SelectionListener | |
| 6399 * @see #addSelectionListener | |
| 6400 */ | |
| 6401 public void removeSelectionListener(SelectionListener listener) { | |
| 6402 checkWidget(); | |
| 6403 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6404 removeListener(SWT.Selection, listener); | |
| 6405 } | |
| 6406 /** | |
| 6407 * Removes the specified verify listener. | |
| 6408 * | |
| 6409 * @param verifyListener the listener which should no longer be notified | |
| 6410 * | |
| 6411 * @exception SWTException <ul> | |
| 6412 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6413 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6414 * </ul> | |
| 6415 * @exception IllegalArgumentException <ul> | |
| 6416 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6417 * </ul> | |
| 6418 */ | |
| 6419 public void removeVerifyListener(VerifyListener verifyListener) { | |
| 6420 checkWidget(); | |
| 6421 if (verifyListener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6422 removeListener(SWT.Verify, verifyListener); | |
| 6423 } | |
| 6424 /** | |
| 6425 * Removes the specified key verify listener. | |
| 6426 * | |
| 6427 * @param listener the listener which should no longer be notified | |
| 6428 * | |
| 6429 * @exception SWTException <ul> | |
| 6430 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6431 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6432 * </ul> | |
| 6433 * @exception IllegalArgumentException <ul> | |
| 6434 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6435 * </ul> | |
| 6436 */ | |
| 6437 public void removeVerifyKeyListener(VerifyKeyListener listener) { | |
| 6438 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6439 removeListener(VerifyKey, listener); | |
| 6440 } | |
| 6441 /** | |
| 6442 * Removes the specified word movement listener. | |
| 6443 * | |
| 6444 * @param listener the listener which should no longer be notified | |
| 6445 * | |
| 6446 * @exception SWTException <ul> | |
| 6447 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6448 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6449 * </ul> | |
| 6450 * @exception IllegalArgumentException <ul> | |
| 6451 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6452 * </ul> | |
| 6453 * | |
| 6454 * @see MovementEvent | |
| 6455 * @see MovementListener | |
| 6456 * @see #addWordMovementListener | |
| 6457 * | |
| 6458 * @since 3.3 | |
| 6459 */ | |
| 6460 | |
| 6461 public void removeWordMovementListener(MovementListener listener) { | |
| 6462 checkWidget(); | |
| 6463 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6464 removeListener(WordNext, listener); | |
| 6465 removeListener(WordPrevious, listener); | |
| 6466 } | |
| 6467 /** | |
| 6468 * Replaces the styles in the given range with new styles. This method | |
| 6469 * effectively deletes the styles in the given range and then adds the | |
| 6470 * the new styles. | |
| 6471 * <p> | |
| 6472 * Note: Because a StyleRange includes the start and length, the | |
| 6473 * same instance cannot occur multiple times in the array of styles. | |
| 6474 * If the same style attributes, such as font and color, occur in | |
| 6475 * multiple StyleRanges, <code>setStyleRanges(int, int, int[], StyleRange[])</code> | |
| 6476 * can be used to share styles and reduce memory usage. | |
| 6477 * </p><p> | |
| 6478 * Should not be called if a LineStyleListener has been set since the | |
| 6479 * listener maintains the styles. | |
| 6480 * </p> | |
| 6481 * | |
| 6482 * @param start offset of first character where styles will be deleted | |
| 6483 * @param length length of the range to delete styles in | |
| 6484 * @param ranges StyleRange objects containing the new style information. | |
| 6485 * The ranges should not overlap and should be within the specified start | |
| 6486 * and length. The style rendering is undefined if the ranges do overlap | |
| 6487 * or are ill-defined. Must not be null. | |
| 6488 * @exception SWTException <ul> | |
| 6489 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6490 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6491 * </ul> | |
| 6492 * @exception IllegalArgumentException <ul> | |
| 6493 * <li>ERROR_INVALID_RANGE when either start or end is outside the valid range (0 <= offset <= getCharCount())</li> | |
| 6494 * </ul> | |
| 6495 * | |
| 6496 * @since 2.0 | |
| 6497 * | |
| 6498 * @see #setStyleRanges(int, int, int[], StyleRange[]) | |
| 6499 */ | |
| 6500 public void replaceStyleRanges(int start, int length, StyleRange[] ranges) { | |
| 6501 checkWidget(); | |
| 6502 if (isListening(LineGetStyle)) return; | |
| 6503 // SWT extension: allow null for zero length string | |
| 6504 //if (ranges is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6505 setStyleRanges(start, length, null, ranges, false); | |
| 6506 } | |
| 6507 /** | |
| 6508 * Replaces the given text range with new text. | |
| 6509 * If the widget has the SWT.SINGLE style and "text" contains more than | |
| 6510 * one line, only the first line is rendered but the text is stored | |
| 6511 * unchanged. A subsequent call to getText will return the same text | |
| 6512 * that was set. Note that only a single line of text should be set when | |
| 6513 * the SWT.SINGLE style is used. | |
| 6514 * <p> | |
| 6515 * <b>NOTE:</b> During the replace operation the current selection is | |
| 6516 * changed as follows: | |
| 6517 * <ul> | |
| 6518 * <li>selection before replaced text: selection unchanged | |
| 6519 * <li>selection after replaced text: adjust the selection so that same text | |
| 6520 * remains selected | |
| 6521 * <li>selection intersects replaced text: selection is cleared and caret | |
| 6522 * is placed after inserted text | |
| 6523 * </ul> | |
| 6524 * </p> | |
| 6525 * | |
| 6526 * @param start offset of first character to replace | |
| 6527 * @param length number of characters to replace. Use 0 to insert text | |
| 6528 * @param text new text. May be empty to delete text. | |
| 6529 * @exception SWTException <ul> | |
| 6530 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6531 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6532 * </ul> | |
| 6533 * @exception IllegalArgumentException <ul> | |
| 6534 * <li>ERROR_INVALID_RANGE when either start or end is outside the valid range (0 <= offset <= getCharCount())</li> | |
| 6535 * <li>ERROR_INVALID_ARGUMENT when either start or end is inside a multi byte line delimiter. | |
| 6536 * Splitting a line delimiter for example by inserting text in between the CR and LF and deleting part of a line delimiter is not supported</li> | |
| 6537 * </ul> | |
| 6538 */ | |
| 6539 public void replaceTextRange(int start, int length, String text) { | |
| 6540 checkWidget(); | |
| 6541 // SWT extension: allow null for zero length string | |
| 6542 // if (text is null) { | |
| 6543 // SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6544 // } | |
| 6545 int contentLength = getCharCount(); | |
| 6546 int end = start + length; | |
| 6547 if (start > end || start < 0 || end > contentLength) { | |
| 6548 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 6549 } | |
| 6550 Event event = new Event(); | |
| 6551 event.start = start; | |
| 6552 event.end = end; | |
| 6553 event.text = text; | |
| 6554 modifyContent(event, false); | |
| 6555 } | |
| 6556 /** | |
| 6557 * Resets the caret position, selection and scroll offsets. Recalculate | |
| 6558 * the content width and scroll bars. Redraw the widget. | |
| 6559 */ | |
| 6560 void reset() { | |
| 6561 ScrollBar verticalBar = getVerticalBar(); | |
| 6562 ScrollBar horizontalBar = getHorizontalBar(); | |
| 6563 caretOffset = 0; | |
| 6564 topIndex = 0; | |
| 6565 topIndexY = 0; | |
| 6566 verticalScrollOffset = 0; | |
| 6567 horizontalScrollOffset = 0; | |
| 6568 resetSelection(); | |
| 6569 renderer.setContent(content); | |
| 6570 if (verticalBar !is null) { | |
| 6571 verticalBar.setSelection(0); | |
| 6572 } | |
| 6573 if (horizontalBar !is null) { | |
| 6574 horizontalBar.setSelection(0); | |
| 6575 } | |
| 6576 resetCache(0, 0); | |
| 6577 setCaretLocation(); | |
| 6578 super.redraw(); | |
| 6579 } | |
| 6580 void resetCache(int firstLine, int count) { | |
| 6581 int maxLineIndex = renderer.maxWidthLineIndex; | |
| 6582 renderer.reset(firstLine, count); | |
| 6583 renderer.calculateClientArea(); | |
| 6584 if (0 <= maxLineIndex && maxLineIndex < content.getLineCount()) { | |
| 6585 renderer.calculate(maxLineIndex, 1); | |
| 6586 } | |
| 6587 setScrollBars(true); | |
| 6588 if (!isFixedLineHeight()) { | |
| 6589 if (topIndex > firstLine) { | |
| 6590 verticalScrollOffset = -1; | |
| 6591 } | |
| 6592 renderer.calculateIdle(); | |
| 6593 } | |
| 6594 } | |
| 6595 /** | |
| 6596 * Resets the selection. | |
| 6597 */ | |
| 6598 void resetSelection() { | |
| 6599 selection.x = selection.y = caretOffset; | |
| 6600 selectionAnchor = -1; | |
| 6601 } | |
| 6602 | |
| 6603 public override void scroll(int destX, int destY, int x, int y, int width, int height, bool all) { | |
| 6604 super.scroll(destX, destY, x, y, width, height, false); | |
| 6605 if (all) { | |
| 6606 int deltaX = destX - x, deltaY = destY - y; | |
| 6607 Control[] children = getChildren(); | |
| 6608 for (int i=0; i<children.length; i++) { | |
| 6609 Control child = children[i]; | |
| 6610 Rectangle rect = child.getBounds(); | |
| 6611 child.setLocation(rect.x + deltaX, rect.y + deltaY); | |
| 6612 } | |
| 6613 } | |
| 6614 } | |
| 6615 | |
| 6616 /** | |
| 6617 * Scrolls the widget horizontally. | |
| 6618 * | |
| 6619 * @param pixels number of pixels to scroll, > 0 = scroll left, | |
| 6620 * < 0 scroll right | |
| 6621 * @param adjustScrollBar | |
| 6622 * true= the scroll thumb will be moved to reflect the new scroll offset. | |
| 6623 * false = the scroll thumb will not be moved | |
| 6624 * @return | |
| 6625 * true=the widget was scrolled | |
| 6626 * false=the widget was not scrolled, the given offset is not valid. | |
| 6627 */ | |
| 6628 bool scrollHorizontal(int pixels, bool adjustScrollBar) { | |
| 6629 if (pixels is 0) { | |
| 6630 return false; | |
| 6631 } | |
| 6632 ScrollBar horizontalBar = getHorizontalBar(); | |
| 6633 if (horizontalBar !is null && adjustScrollBar) { | |
| 6634 horizontalBar.setSelection(horizontalScrollOffset + pixels); | |
| 6635 } | |
| 6636 int scrollHeight = clientAreaHeight - topMargin - bottomMargin; | |
| 6637 if (pixels > 0) { | |
| 6638 int sourceX = leftMargin + pixels; | |
| 6639 int scrollWidth = clientAreaWidth - sourceX - rightMargin; | |
| 6640 if (scrollWidth > 0) { | |
| 6641 scroll(leftMargin, topMargin, sourceX, topMargin, scrollWidth, scrollHeight, true); | |
| 6642 } | |
| 6643 if (sourceX > scrollWidth) { | |
| 6644 super.redraw(leftMargin + scrollWidth, topMargin, pixels - scrollWidth, scrollHeight, true); | |
| 6645 } | |
| 6646 } else { | |
| 6647 int destinationX = leftMargin - pixels; | |
| 6648 int scrollWidth = clientAreaWidth - destinationX - rightMargin; | |
| 6649 if (scrollWidth > 0) { | |
| 6650 scroll(destinationX, topMargin, leftMargin, topMargin, scrollWidth, scrollHeight, true); | |
| 6651 } | |
| 6652 if (destinationX > scrollWidth) { | |
| 6653 super.redraw(leftMargin + scrollWidth, topMargin, -pixels - scrollWidth, scrollHeight, true); | |
| 6654 } | |
| 6655 } | |
| 6656 horizontalScrollOffset += pixels; | |
| 6657 setCaretLocation(); | |
| 6658 return true; | |
| 6659 } | |
| 6660 /** | |
| 6661 * Scrolls the widget vertically. | |
| 6662 * | |
| 6663 * @param pixel the new vertical scroll offset | |
| 6664 * @param adjustScrollBar | |
| 6665 * true= the scroll thumb will be moved to reflect the new scroll offset. | |
| 6666 * false = the scroll thumb will not be moved | |
| 6667 * @return | |
| 6668 * true=the widget was scrolled | |
| 6669 * false=the widget was not scrolled | |
| 6670 */ | |
| 6671 bool scrollVertical(int pixels, bool adjustScrollBar) { | |
| 6672 if (pixels is 0) { | |
| 6673 return false; | |
| 6674 } | |
| 6675 if (verticalScrollOffset !is -1) { | |
| 6676 ScrollBar verticalBar = getVerticalBar(); | |
| 6677 if (verticalBar !is null && adjustScrollBar) { | |
| 6678 verticalBar.setSelection(verticalScrollOffset + pixels); | |
| 6679 } | |
| 6680 int scrollWidth = clientAreaWidth - leftMargin - rightMargin; | |
| 6681 if (pixels > 0) { | |
| 6682 int sourceY = topMargin + pixels; | |
| 6683 int scrollHeight = clientAreaHeight - sourceY - bottomMargin; | |
| 6684 if (scrollHeight > 0) { | |
| 6685 scroll(leftMargin, topMargin, leftMargin, sourceY, scrollWidth, scrollHeight, true); | |
| 6686 } | |
| 6687 if (sourceY > scrollHeight) { | |
| 6688 int redrawY = Math.max(0, topMargin + scrollHeight); | |
| 6689 int redrawHeight = Math.min(clientAreaHeight, pixels - scrollHeight); | |
| 6690 super.redraw(leftMargin, redrawY, scrollWidth, redrawHeight, true); | |
| 6691 } | |
| 6692 } else { | |
| 6693 int destinationY = topMargin - pixels; | |
| 6694 int scrollHeight = clientAreaHeight - destinationY - bottomMargin; | |
| 6695 if (scrollHeight > 0) { | |
| 6696 scroll(leftMargin, destinationY, leftMargin, topMargin, scrollWidth, scrollHeight, true); | |
| 6697 } | |
| 6698 if (destinationY > scrollHeight) { | |
| 6699 int redrawY = Math.max(0, topMargin + scrollHeight); | |
| 6700 int redrawHeight = Math.min(clientAreaHeight, -pixels - scrollHeight); | |
| 6701 super.redraw(leftMargin, redrawY, scrollWidth, redrawHeight, true); | |
| 6702 } | |
| 6703 } | |
| 6704 verticalScrollOffset += pixels; | |
| 6705 calculateTopIndex(pixels); | |
| 6706 } else { | |
| 6707 calculateTopIndex(pixels); | |
| 6708 super.redraw(); | |
| 6709 } | |
| 6710 setCaretLocation(); | |
| 6711 return true; | |
| 6712 } | |
| 6713 void scrollText(int srcY, int destY) { | |
| 6714 if (srcY is destY) return; | |
| 6715 int deltaY = destY - srcY; | |
| 6716 int scrollWidth = clientAreaWidth - leftMargin - rightMargin, scrollHeight; | |
| 6717 if (deltaY > 0) { | |
| 6718 scrollHeight = clientAreaHeight - srcY - bottomMargin; | |
| 6719 } else { | |
| 6720 scrollHeight = clientAreaHeight - destY - bottomMargin; | |
| 6721 } | |
| 6722 scroll(leftMargin, destY, leftMargin, srcY, scrollWidth, scrollHeight, true); | |
| 6723 if ((0 < srcY + scrollHeight) && (topMargin > srcY)) { | |
| 6724 super.redraw(leftMargin, deltaY, scrollWidth, topMargin, false); | |
| 6725 } | |
| 6726 if ((0 < destY + scrollHeight) && (topMargin > destY)) { | |
| 6727 super.redraw(leftMargin, 0, scrollWidth, topMargin, false); | |
| 6728 } | |
| 6729 if ((clientAreaHeight - bottomMargin < srcY + scrollHeight) && (clientAreaHeight > srcY)) { | |
| 6730 super.redraw(leftMargin, clientAreaHeight - bottomMargin + deltaY, scrollWidth, bottomMargin, false); | |
| 6731 } | |
| 6732 if ((clientAreaHeight - bottomMargin < destY + scrollHeight) && (clientAreaHeight > destY)) { | |
| 6733 super.redraw(leftMargin, clientAreaHeight - bottomMargin, scrollWidth, bottomMargin, false); | |
| 6734 } | |
| 6735 } | |
| 6736 /** | |
| 6737 * Selects all the text. | |
| 6738 * | |
| 6739 * @exception SWTException <ul> | |
| 6740 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6741 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6742 * </ul> | |
| 6743 */ | |
| 6744 public void selectAll() { | |
| 6745 checkWidget(); | |
| 6746 setSelection(0, Math.max(getCharCount(),0)); | |
| 6747 } | |
| 6748 /** | |
| 6749 * Replaces/inserts text as defined by the event. | |
| 6750 * | |
| 6751 * @param event the text change event. | |
| 6752 * <ul> | |
| 6753 * <li>event.start - the replace start offset</li> | |
| 6754 * <li>event.end - the replace end offset</li> | |
| 6755 * <li>event.text - the new text</li> | |
| 6756 * </ul> | |
| 6757 */ | |
| 6758 void sendKeyEvent(Event event) { | |
| 6759 if (editable) { | |
| 6760 modifyContent(event, true); | |
| 6761 } | |
| 6762 } | |
| 6763 /** | |
| 6764 * Returns a StyledTextEvent that can be used to request data such | |
| 6765 * as styles and background color for a line. | |
| 6766 * <p> | |
| 6767 * The specified line may be a visual (wrapped) line if in word | |
| 6768 * wrap mode. The returned object will always be for a logical | |
| 6769 * (unwrapped) line. | |
| 6770 * </p> | |
| 6771 * | |
| 6772 * @param lineOffset offset of the line. This may be the offset of | |
| 6773 * a visual line if the widget is in word wrap mode. | |
| 6774 * @param line line text. This may be the text of a visual line if | |
| 6775 * the widget is in word wrap mode. | |
| 6776 * @return StyledTextEvent that can be used to request line data | |
| 6777 * for the given line. | |
| 6778 */ | |
| 6779 StyledTextEvent sendLineEvent(int eventType, int lineOffset, String line) { | |
| 6780 StyledTextEvent event = null; | |
| 6781 if (isListening(eventType)) { | |
| 6782 event = new StyledTextEvent(content); | |
| 6783 event.detail = lineOffset; | |
| 6784 event.text = line; | |
| 6785 event.alignment = alignment; | |
| 6786 event.indent = indent; | |
| 6787 event.justify = justify; | |
| 6788 notifyListeners(eventType, event); | |
| 6789 } | |
| 6790 return event; | |
| 6791 } | |
| 6792 void sendModifyEvent(Event event) { | |
| 6793 Accessible accessible = getAccessible(); | |
| 6794 if (event.text.length is 0) { | |
| 6795 accessible.textChanged(ACC.TEXT_DELETE, event.start, event.end - event.start); | |
| 6796 } else { | |
| 6797 if (event.start is event.end) { | |
| 6798 accessible.textChanged(ACC.TEXT_INSERT, event.start, event.text.length); | |
| 6799 } else { | |
| 6800 accessible.textChanged(ACC.TEXT_DELETE, event.start, event.end - event.start); | |
| 6801 accessible.textChanged(ACC.TEXT_INSERT, event.start, event.text.length); | |
| 6802 } | |
| 6803 } | |
| 6804 notifyListeners(SWT.Modify, event); | |
| 6805 } | |
| 6806 /** | |
| 6807 * Sends the specified selection event. | |
| 6808 */ | |
| 6809 void sendSelectionEvent() { | |
| 6810 getAccessible().textSelectionChanged(); | |
| 6811 Event event = new Event(); | |
| 6812 event.x = selection.x; | |
| 6813 event.y = selection.y; | |
| 6814 notifyListeners(SWT.Selection, event); | |
| 6815 } | |
| 6816 int sendWordBoundaryEvent(int eventType, int movement, int offset, int newOffset, String lineText, int lineOffset) { | |
| 6817 if (isListening(eventType)) { | |
| 6818 StyledTextEvent event = new StyledTextEvent(content); | |
| 6819 event.detail = lineOffset; | |
| 6820 event.text = lineText; | |
| 6821 event.count = movement; | |
| 6822 event.start = offset; | |
| 6823 event.end = newOffset; | |
| 6824 notifyListeners(eventType, event); | |
| 6825 offset = event.end; | |
| 6826 if (offset !is newOffset) { | |
| 6827 int length = getCharCount(); | |
| 6828 if (offset < 0) { | |
| 6829 offset = 0; | |
| 6830 } else if (offset > length) { | |
| 6831 offset = length; | |
| 6832 } else { | |
| 6833 if (isLineDelimiter(offset)) { | |
| 6834 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 6835 } | |
| 6836 } | |
| 6837 } | |
| 6838 return offset; | |
| 6839 } | |
| 6840 return newOffset; | |
| 6841 } | |
| 6842 /** | |
| 6843 * Sets the alignment of the widget. The argument should be one of <code>SWT.LEFT</code>, | |
| 6844 * <code>SWT.CENTER</code> or <code>SWT.RIGHT</code>. The alignment applies for all lines. | |
| 6845 * </p><p> | |
| 6846 * Note that if <code>SWT.MULTI</code> is set, then <code>SWT.WRAP</code> must also be set | |
| 6847 * in order to stabilize the right edge before setting alignment. | |
| 6848 * </p> | |
| 6849 * | |
| 6850 * @param alignment the new alignment | |
| 6851 * | |
| 6852 * @exception SWTException <ul> | |
| 6853 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6854 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6855 * </ul> | |
| 6856 * | |
| 6857 * @see #setLineAlignment(int, int, int) | |
| 6858 * | |
| 6859 * @since 3.2 | |
| 6860 */ | |
| 6861 public void setAlignment(int alignment) { | |
| 6862 checkWidget(); | |
| 6863 alignment &= (SWT.LEFT | SWT.RIGHT | SWT.CENTER); | |
| 6864 if (alignment is 0 || this.alignment is alignment) return; | |
| 6865 this.alignment = alignment; | |
| 6866 resetCache(0, content.getLineCount()); | |
| 6867 setCaretLocation(); | |
| 6868 super.redraw(); | |
| 6869 } | |
| 6870 /** | |
| 6871 * @see Control#setBackground(Color) | |
| 6872 */ | |
| 6873 public override void setBackground(Color color) { | |
| 6874 checkWidget(); | |
| 6875 background = color; | |
| 6876 super.setBackground(color); | |
| 6877 super.redraw(); | |
| 6878 } | |
| 6879 /** | |
| 6880 * Sets the receiver's caret. Set the caret's height and location. | |
| 6881 * | |
| 6882 * </p> | |
| 6883 * @param caret the new caret for the receiver | |
| 6884 * | |
| 6885 * @exception SWTException <ul> | |
| 6886 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6887 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6888 * </ul> | |
| 6889 */ | |
| 6890 public override void setCaret(Caret caret) { | |
| 6891 checkWidget (); | |
| 6892 super.setCaret(caret); | |
| 6893 caretDirection = SWT.NULL; | |
| 6894 if (caret !is null) { | |
| 6895 setCaretLocation(); | |
| 6896 } | |
| 6897 } | |
| 6898 /** | |
| 6899 * Sets the BIDI coloring mode. When true the BIDI text display | |
| 6900 * algorithm is applied to segments of text that are the same | |
| 6901 * color. | |
| 6902 * | |
| 6903 * @param mode the new coloring mode | |
| 6904 * @exception SWTException <ul> | |
| 6905 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6906 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6907 * </ul> | |
| 6908 * | |
| 6909 * @deprecated use BidiSegmentListener instead. | |
| 6910 */ | |
| 6911 public void setBidiColoring(bool mode) { | |
| 6912 checkWidget(); | |
| 6913 bidiColoring = mode; | |
| 6914 } | |
| 6915 /** | |
| 6916 * Moves the Caret to the current caret offset. | |
| 6917 */ | |
| 6918 void setCaretLocation() { | |
| 6919 Point newCaretPos = getPointAtOffset(caretOffset); | |
| 6920 setCaretLocation(newCaretPos, getCaretDirection()); | |
| 6921 } | |
| 6922 void setCaretLocation(Point location, int direction) { | |
| 6923 Caret caret = getCaret(); | |
| 6924 if (caret !is null) { | |
| 6925 bool isDefaultCaret = caret is defaultCaret; | |
| 6926 int lineHeight = renderer.getLineHeight(); | |
| 6927 int caretHeight = lineHeight; | |
| 6928 if (!isFixedLineHeight() && isDefaultCaret) { | |
| 6929 caretHeight = getBoundsAtOffset(caretOffset).height; | |
| 6930 if (caretHeight !is lineHeight) { | |
| 6931 direction = SWT.DEFAULT; | |
| 6932 } | |
| 6933 } | |
| 6934 int imageDirection = direction; | |
| 6935 if (isMirrored()) { | |
| 6936 if (imageDirection is SWT.LEFT) { | |
| 6937 imageDirection = SWT.RIGHT; | |
| 6938 } else if (imageDirection is SWT.RIGHT) { | |
| 6939 imageDirection = SWT.LEFT; | |
| 6940 } | |
| 6941 } | |
| 6942 if (isDefaultCaret && imageDirection is SWT.RIGHT) { | |
| 6943 location.x -= (caret.getSize().x - 1); | |
| 6944 } | |
| 6945 if (isDefaultCaret) { | |
| 6946 caret.setBounds(location.x, location.y, caretWidth, caretHeight); | |
| 6947 } else { | |
| 6948 caret.setLocation(location); | |
| 6949 } | |
| 6950 getAccessible().textCaretMoved(getCaretOffset()); | |
| 6951 if (direction !is caretDirection) { | |
| 6952 caretDirection = direction; | |
| 6953 if (isDefaultCaret) { | |
| 6954 if (imageDirection is SWT.DEFAULT) { | |
| 6955 defaultCaret.setImage(null); | |
| 6956 } else if (imageDirection is SWT.LEFT) { | |
| 6957 defaultCaret.setImage(leftCaretBitmap); | |
| 6958 } else if (imageDirection is SWT.RIGHT) { | |
| 6959 defaultCaret.setImage(rightCaretBitmap); | |
| 6960 } | |
| 6961 } | |
| 6962 if (caretDirection is SWT.LEFT) { | |
| 6963 BidiUtil.setKeyboardLanguage(BidiUtil.KEYBOARD_NON_BIDI); | |
| 6964 } else if (caretDirection is SWT.RIGHT) { | |
| 6965 BidiUtil.setKeyboardLanguage(BidiUtil.KEYBOARD_BIDI); | |
| 6966 } | |
| 6967 } | |
| 6968 } | |
| 6969 columnX = location.x; | |
| 6970 } | |
| 6971 /** | |
| 6972 * Sets the caret offset. | |
| 6973 * | |
| 6974 * @param offset caret offset, relative to the first character in the text. | |
| 6975 * @exception SWTException <ul> | |
| 6976 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6977 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6978 * </ul> | |
| 6979 * @exception IllegalArgumentException <ul> | |
| 6980 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 6981 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 6982 * </ul> | |
| 6983 */ | |
| 6984 public void setCaretOffset(int offset) { | |
| 6985 checkWidget(); | |
| 6986 int length = getCharCount(); | |
| 6987 if (length > 0 && offset !is caretOffset) { | |
| 6988 if (offset < 0) { | |
| 6989 caretOffset = 0; | |
| 6990 } else if (offset > length) { | |
| 6991 caretOffset = length; | |
| 6992 } else { | |
| 6993 if (isLineDelimiter(offset)) { | |
| 6994 // offset is inside a multi byte line delimiter. This is an | |
| 6995 // illegal operation and an exception is thrown. Fixes 1GDKK3R | |
| 6996 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 6997 } | |
| 6998 caretOffset = offset; | |
| 6999 } | |
| 7000 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 7001 // clear the selection if the caret is moved. | |
| 7002 // don't notify listeners about the selection change. | |
| 7003 clearSelection(false); | |
| 7004 } | |
| 7005 setCaretLocation(); | |
| 7006 } | |
| 7007 /** | |
| 7008 * Copies the specified text range to the clipboard. The text will be placed | |
| 7009 * in the clipboard in plain text format and RTF format. | |
| 7010 * | |
| 7011 * @param start start index of the text | |
| 7012 * @param length length of text to place in clipboard | |
| 7013 * | |
| 7014 * @exception SWTError, see Clipboard.setContents | |
| 7015 * @see org.eclipse.swt.dnd.Clipboard#setContents | |
| 7016 */ | |
| 7017 void setClipboardContent(int start, int length, int clipboardType) { | |
| 7018 if (clipboardType is DND.SELECTION_CLIPBOARD && !(IS_MOTIF || IS_GTK)) return; | |
| 7019 TextTransfer plainTextTransfer = TextTransfer.getInstance(); | |
| 7020 TextWriter plainTextWriter = new TextWriter(start, length); | |
| 7021 String plainText = getPlatformDelimitedText(plainTextWriter); | |
| 7022 Object[] data; | |
| 7023 Transfer[] types; | |
| 7024 if (clipboardType is DND.SELECTION_CLIPBOARD) { | |
| 7025 data = [ cast(Object) new ArrayWrapperString(plainText) ]; | |
| 7026 types = [plainTextTransfer]; | |
| 7027 } else { | |
| 7028 RTFTransfer rtfTransfer = RTFTransfer.getInstance(); | |
| 7029 RTFWriter rtfWriter = new RTFWriter(start, length); | |
| 7030 String rtfText = getPlatformDelimitedText(rtfWriter); | |
| 7031 data = [ cast(Object) new ArrayWrapperString(rtfText), new ArrayWrapperString(plainText) ]; | |
| 7032 types = [ cast(Transfer)rtfTransfer, plainTextTransfer]; | |
| 7033 } | |
| 7034 clipboard.setContents(data, types, clipboardType); | |
| 7035 } | |
| 7036 /** | |
| 7037 * Sets the content implementation to use for text storage. | |
| 7038 * | |
| 7039 * @param newContent StyledTextContent implementation to use for text storage. | |
| 7040 * @exception SWTException <ul> | |
| 7041 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7042 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7043 * </ul> | |
| 7044 * @exception IllegalArgumentException <ul> | |
| 7045 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 7046 * </ul> | |
| 7047 */ | |
| 7048 public void setContent(StyledTextContent newContent) { | |
| 7049 checkWidget(); | |
| 7050 if (newContent is null) { | |
| 7051 SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 7052 } | |
| 7053 if (content !is null) { | |
| 7054 content.removeTextChangeListener(textChangeListener); | |
| 7055 } | |
| 7056 content = newContent; | |
| 7057 content.addTextChangeListener(textChangeListener); | |
| 7058 reset(); | |
| 7059 } | |
| 7060 /** | |
| 7061 * Sets the receiver's cursor to the cursor specified by the | |
| 7062 * argument. Overridden to handle the null case since the | |
| 7063 * StyledText widget uses an ibeam as its default cursor. | |
| 7064 * | |
| 7065 * @see Control#setCursor(Cursor) | |
| 7066 */ | |
| 7067 public override void setCursor (Cursor cursor) { | |
| 7068 if (cursor is null) { | |
| 7069 Display display = getDisplay(); | |
| 7070 super.setCursor(display.getSystemCursor(SWT.CURSOR_IBEAM)); | |
| 7071 } else { | |
| 7072 super.setCursor(cursor); | |
| 7073 } | |
| 7074 } | |
| 7075 /** | |
| 7076 * Sets whether the widget : double click mouse behavior. | |
| 7077 * </p> | |
| 7078 * | |
| 7079 * @param enable if true double clicking a word selects the word, if false | |
| 7080 * double clicks have the same effect as regular mouse clicks. | |
| 7081 * @exception SWTException <ul> | |
| 7082 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7083 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7084 * </ul> | |
| 7085 */ | |
| 7086 public void setDoubleClickEnabled(bool enable) { | |
| 7087 checkWidget(); | |
| 7088 doubleClickEnabled = enable; | |
| 7089 } | |
| 7090 public override void setDragDetect (bool dragDetect_) { | |
| 7091 checkWidget (); | |
| 7092 this.dragDetect_ = dragDetect_; | |
| 7093 } | |
| 7094 /** | |
| 7095 * Sets whether the widget content can be edited. | |
| 7096 * </p> | |
| 7097 * | |
| 7098 * @param editable if true content can be edited, if false content can not be | |
| 7099 * edited | |
| 7100 * @exception SWTException <ul> | |
| 7101 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7102 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7103 * </ul> | |
| 7104 */ | |
| 7105 public void setEditable(bool editable) { | |
| 7106 checkWidget(); | |
| 7107 this.editable = editable; | |
| 7108 } | |
| 7109 /** | |
| 7110 * Sets a new font to render text with. | |
| 7111 * <p> | |
| 7112 * <b>NOTE:</b> Italic fonts are not supported unless they have no overhang | |
| 7113 * and the same baseline as regular fonts. | |
| 7114 * </p> | |
| 7115 * | |
| 7116 * @param font new font | |
| 7117 * @exception SWTException <ul> | |
| 7118 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7119 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7120 * </ul> | |
| 7121 */ | |
| 7122 public override void setFont(Font font) { | |
| 7123 checkWidget(); | |
| 7124 int oldLineHeight = renderer.getLineHeight(); | |
| 7125 super.setFont(font); | |
| 7126 renderer.setFont(getFont(), tabLength); | |
| 7127 // keep the same top line visible. fixes 5815 | |
| 7128 if (isFixedLineHeight()) { | |
| 7129 int lineHeight = renderer.getLineHeight(); | |
| 7130 if (lineHeight !is oldLineHeight) { | |
| 7131 int vscroll = (getVerticalScrollOffset() * lineHeight / oldLineHeight) - getVerticalScrollOffset(); | |
| 7132 scrollVertical(vscroll, true); | |
| 7133 } | |
| 7134 } | |
| 7135 resetCache(0, content.getLineCount()); | |
| 7136 claimBottomFreeSpace(); | |
| 7137 calculateScrollBars(); | |
| 7138 if (isBidiCaret()) createCaretBitmaps(); | |
| 7139 caretDirection = SWT.NULL; | |
| 7140 setCaretLocation(); | |
| 7141 super.redraw(); | |
| 7142 } | |
| 7143 public override void setForeground(Color color) { | |
| 7144 checkWidget(); | |
| 7145 foreground = color; | |
| 7146 super.setForeground(getForeground()); | |
| 7147 super.redraw(); | |
| 7148 } | |
| 7149 /** | |
| 7150 * Sets the horizontal scroll offset relative to the start of the line. | |
| 7151 * Do nothing if there is no text set. | |
| 7152 * <p> | |
| 7153 * <b>NOTE:</b> The horizontal index is reset to 0 when new text is set in the | |
| 7154 * widget. | |
| 7155 * </p> | |
| 7156 * | |
| 7157 * @param offset horizontal scroll offset relative to the start | |
| 7158 * of the line, measured in character increments starting at 0, if | |
| 7159 * equal to 0 the content is not scrolled, if > 0 = the content is scrolled. | |
| 7160 * @exception SWTException <ul> | |
| 7161 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7162 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7163 * </ul> | |
| 7164 */ | |
| 7165 public void setHorizontalIndex(int offset) { | |
| 7166 checkWidget(); | |
| 7167 if (getCharCount() is 0) { | |
| 7168 return; | |
| 7169 } | |
| 7170 if (offset < 0) { | |
| 7171 offset = 0; | |
| 7172 } | |
| 7173 offset *= getHorizontalIncrement(); | |
| 7174 // allow any value if client area width is unknown or 0. | |
| 7175 // offset will be checked in resize handler. | |
| 7176 // don't use isVisible since width is known even if widget | |
| 7177 // is temporarily invisible | |
| 7178 if (clientAreaWidth > 0) { | |
| 7179 int width = renderer.getWidth(); | |
| 7180 // prevent scrolling if the content fits in the client area. | |
| 7181 // align end of longest line with right border of client area | |
| 7182 // if offset is out of range. | |
| 7183 if (offset > width - clientAreaWidth) { | |
| 7184 offset = Math.max(0, width - clientAreaWidth); | |
| 7185 } | |
| 7186 } | |
| 7187 scrollHorizontal(offset - horizontalScrollOffset, true); | |
| 7188 } | |
| 7189 /** | |
| 7190 * Sets the horizontal pixel offset relative to the start of the line. | |
| 7191 * Do nothing if there is no text set. | |
| 7192 * <p> | |
| 7193 * <b>NOTE:</b> The horizontal pixel offset is reset to 0 when new text | |
| 7194 * is set in the widget. | |
| 7195 * </p> | |
| 7196 * | |
| 7197 * @param pixel horizontal pixel offset relative to the start | |
| 7198 * of the line. | |
| 7199 * @exception SWTException <ul> | |
| 7200 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7201 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7202 * </ul> | |
| 7203 * @since 2.0 | |
| 7204 */ | |
| 7205 public void setHorizontalPixel(int pixel) { | |
| 7206 checkWidget(); | |
| 7207 if (getCharCount() is 0) { | |
| 7208 return; | |
| 7209 } | |
| 7210 if (pixel < 0) { | |
| 7211 pixel = 0; | |
| 7212 } | |
| 7213 // allow any value if client area width is unknown or 0. | |
| 7214 // offset will be checked in resize handler. | |
| 7215 // don't use isVisible since width is known even if widget | |
| 7216 // is temporarily invisible | |
| 7217 if (clientAreaWidth > 0) { | |
| 7218 int width = renderer.getWidth(); | |
| 7219 // prevent scrolling if the content fits in the client area. | |
| 7220 // align end of longest line with right border of client area | |
| 7221 // if offset is out of range. | |
| 7222 if (pixel > width - clientAreaWidth) { | |
| 7223 pixel = Math.max(0, width - clientAreaWidth); | |
| 7224 } | |
| 7225 } | |
| 7226 scrollHorizontal(pixel - horizontalScrollOffset, true); | |
| 7227 } | |
| 7228 /** | |
| 7229 * Sets the line indentation of the widget. | |
| 7230 * <p> | |
| 7231 * It is the amount of blank space, in pixels, at the beginning of each line. | |
| 7232 * When a line wraps in several lines only the first one is indented. | |
| 7233 * </p> | |
| 7234 * | |
| 7235 * @param indent the new indent | |
| 7236 * | |
| 7237 * @exception SWTException <ul> | |
| 7238 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7239 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7240 * </ul> | |
| 7241 * | |
| 7242 * @see #setLineIndent(int, int, int) | |
| 7243 * | |
| 7244 * @since 3.2 | |
| 7245 */ | |
| 7246 public void setIndent(int indent) { | |
| 7247 checkWidget(); | |
| 7248 if (this.indent is indent || indent < 0) return; | |
| 7249 this.indent = indent; | |
| 7250 resetCache(0, content.getLineCount()); | |
| 7251 setCaretLocation(); | |
| 7252 super.redraw(); | |
| 7253 } | |
| 7254 /** | |
| 7255 * Sets whether the widget should justify lines. | |
| 7256 * | |
| 7257 * @param justify whether lines should be justified | |
| 7258 * | |
| 7259 * @exception SWTException <ul> | |
| 7260 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7261 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7262 * </ul> | |
| 7263 * | |
| 7264 * @see #setLineJustify(int, int, bool) | |
| 7265 * | |
| 7266 * @since 3.2 | |
| 7267 */ | |
| 7268 public void setJustify(bool justify) { | |
| 7269 checkWidget(); | |
| 7270 if (this.justify is justify) return; | |
| 7271 this.justify = justify; | |
| 7272 resetCache(0, content.getLineCount()); | |
| 7273 setCaretLocation(); | |
| 7274 super.redraw(); | |
| 7275 } | |
| 7276 /** | |
| 7277 * Maps a key to an action. | |
| 7278 * <p> | |
| 7279 * One action can be associated with N keys. However, each key can only | |
| 7280 * have one action (key:action is N:1 relation). | |
| 7281 * </p> | |
| 7282 * | |
| 7283 * @param key a key code defined in SWT.java or a character. | |
| 7284 * Optionally ORd with a state mask. Preferred state masks are one or more of | |
| 7285 * SWT.MOD1, SWT.MOD2, SWT.MOD3, since these masks account for modifier platform | |
| 7286 * differences. However, there may be cases where using the specific state masks | |
| 7287 * (i.e., SWT.CTRL, SWT.SHIFT, SWT.ALT, SWT.COMMAND) makes sense. | |
| 7288 * @param action one of the predefined actions defined in ST.java. | |
| 7289 * Use SWT.NULL to remove a key binding. | |
| 7290 * @exception SWTException <ul> | |
| 7291 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7292 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7293 * </ul> | |
| 7294 */ | |
| 7295 public void setKeyBinding(int key, int action) { | |
| 7296 checkWidget(); | |
| 7297 int modifierValue = key & SWT.MODIFIER_MASK; | |
| 7298 char keyChar = cast(char)(key & SWT.KEY_MASK); | |
| 7299 if (Compatibility.isLetter(keyChar)) { | |
| 7300 // make the keybinding case insensitive by adding it | |
| 7301 // in its upper and lower case form | |
| 113 | 7302 char ch = cast(char) CharacterToUpper(keyChar); |
| 25 | 7303 int newKey = ch | modifierValue; |
| 7304 if (action is SWT.NULL) { | |
| 7305 keyActionMap.remove(newKey); | |
| 7306 } else { | |
| 7307 keyActionMap[newKey] = action; | |
| 7308 } | |
| 113 | 7309 ch = cast(char) CharacterToLower(keyChar); |
| 25 | 7310 newKey = ch | modifierValue; |
| 7311 if (action is SWT.NULL) { | |
| 7312 keyActionMap.remove(newKey); | |
| 7313 } else { | |
| 7314 keyActionMap[newKey] = action; | |
| 7315 } | |
| 7316 } else { | |
| 7317 if (action is SWT.NULL) { | |
| 7318 keyActionMap.remove(key); | |
| 7319 } else { | |
| 7320 keyActionMap[key]=action; | |
| 7321 } | |
| 7322 } | |
| 7323 } | |
| 7324 /** | |
| 7325 * Sets the alignment of the specified lines. The argument should be one of <code>SWT.LEFT</code>, | |
| 7326 * <code>SWT.CENTER</code> or <code>SWT.RIGHT</code>. | |
| 7327 * <p><p> | |
| 7328 * Note that if <code>SWT.MULTI</code> is set, then <code>SWT.WRAP</code> must also be set | |
| 7329 * in order to stabilize the right edge before setting alignment. | |
| 7330 * </p> | |
| 7331 * Should not be called if a LineStyleListener has been set since the listener | |
| 7332 * maintains the line attributes. | |
| 7333 * </p><p> | |
| 7334 * All line attributes are maintained relative to the line text, not the | |
| 7335 * line index that is specified in this method call. | |
| 7336 * During text changes, when entire lines are inserted or removed, the line | |
| 7337 * attributes that are associated with the lines after the change | |
| 7338 * will "move" with their respective text. An entire line is defined as | |
| 7339 * extending from the first character on a line to the last and including the | |
| 7340 * line delimiter. | |
| 7341 * </p><p> | |
| 7342 * When two lines are joined by deleting a line delimiter, the top line | |
| 7343 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7344 * For all other text changes line attributes will remain unchanged. | |
| 7345 * | |
| 7346 * @param startLine first line the alignment is applied to, 0 based | |
| 7347 * @param lineCount number of lines the alignment applies to. | |
| 7348 * @param alignment line alignment | |
| 7349 * | |
| 7350 * @exception SWTException <ul> | |
| 7351 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7352 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7353 * </ul> | |
| 7354 * @exception IllegalArgumentException <ul> | |
| 7355 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7356 * </ul> | |
| 7357 * @see #setAlignment(int) | |
| 7358 * @since 3.2 | |
| 7359 */ | |
| 7360 public void setLineAlignment(int startLine, int lineCount, int alignment) { | |
| 7361 checkWidget(); | |
| 7362 if (isListening(LineGetStyle)) return; | |
| 7363 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7364 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 7365 } | |
| 7366 | |
| 7367 renderer.setLineAlignment(startLine, lineCount, alignment); | |
| 7368 resetCache(startLine, lineCount); | |
| 7369 redrawLines(startLine, lineCount); | |
| 7370 int caretLine = getCaretLine(); | |
| 7371 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7372 setCaretLocation(); | |
| 7373 } | |
| 7374 } | |
| 7375 /** | |
| 7376 * Sets the background color of the specified lines. | |
| 7377 * <p> | |
| 7378 * The background color is drawn for the width of the widget. All | |
| 7379 * line background colors are discarded when setText is called. | |
| 7380 * The text background color if defined in a StyleRange overlays the | |
| 7381 * line background color. | |
| 7382 * </p><p> | |
| 7383 * Should not be called if a LineBackgroundListener has been set since the | |
| 7384 * listener maintains the line backgrounds. | |
| 7385 * </p><p> | |
| 7386 * All line attributes are maintained relative to the line text, not the | |
| 7387 * line index that is specified in this method call. | |
| 7388 * During text changes, when entire lines are inserted or removed, the line | |
| 7389 * attributes that are associated with the lines after the change | |
| 7390 * will "move" with their respective text. An entire line is defined as | |
| 7391 * extending from the first character on a line to the last and including the | |
| 7392 * line delimiter. | |
| 7393 * </p><p> | |
| 7394 * When two lines are joined by deleting a line delimiter, the top line | |
| 7395 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7396 * For all other text changes line attributes will remain unchanged. | |
| 7397 * </p> | |
| 7398 * | |
| 7399 * @param startLine first line the color is applied to, 0 based | |
| 7400 * @param lineCount number of lines the color applies to. | |
| 7401 * @param background line background color | |
| 7402 * @exception SWTException <ul> | |
| 7403 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7404 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7405 * </ul> | |
| 7406 * @exception IllegalArgumentException <ul> | |
| 7407 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7408 * </ul> | |
| 7409 */ | |
| 7410 public void setLineBackground(int startLine, int lineCount, Color background) { | |
| 7411 checkWidget(); | |
| 7412 if (isListening(LineGetBackground)) return; | |
| 7413 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7414 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 7415 } | |
| 7416 if (background !is null) { | |
| 7417 renderer.setLineBackground(startLine, lineCount, background); | |
| 7418 } else { | |
| 7419 renderer.clearLineBackground(startLine, lineCount); | |
| 7420 } | |
| 7421 redrawLines(startLine, lineCount); | |
| 7422 } | |
| 7423 /** | |
| 7424 * Sets the bullet of the specified lines. | |
| 7425 * <p> | |
| 7426 * Should not be called if a LineStyleListener has been set since the listener | |
| 7427 * maintains the line attributes. | |
| 7428 * </p><p> | |
| 7429 * All line attributes are maintained relative to the line text, not the | |
| 7430 * line index that is specified in this method call. | |
| 7431 * During text changes, when entire lines are inserted or removed, the line | |
| 7432 * attributes that are associated with the lines after the change | |
| 7433 * will "move" with their respective text. An entire line is defined as | |
| 7434 * extending from the first character on a line to the last and including the | |
| 7435 * line delimiter. | |
| 7436 * </p><p> | |
| 7437 * When two lines are joined by deleting a line delimiter, the top line | |
| 7438 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7439 * For all other text changes line attributes will remain unchanged. | |
| 7440 * </p> | |
| 7441 * | |
| 7442 * @param startLine first line the bullet is applied to, 0 based | |
| 7443 * @param lineCount number of lines the bullet applies to. | |
| 7444 * @param bullet line bullet | |
| 7445 * | |
| 7446 * @exception SWTException <ul> | |
| 7447 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7448 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7449 * </ul> | |
| 7450 * @exception IllegalArgumentException <ul> | |
| 7451 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7452 * </ul> | |
| 7453 * @since 3.2 | |
| 7454 */ | |
| 7455 public void setLineBullet(int startLine, int lineCount, Bullet bullet) { | |
| 7456 checkWidget(); | |
| 7457 if (isListening(LineGetStyle)) return; | |
| 7458 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7459 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 7460 } | |
| 7461 | |
| 7462 renderer.setLineBullet(startLine, lineCount, bullet); | |
| 7463 resetCache(startLine, lineCount); | |
| 7464 redrawLines(startLine, lineCount); | |
| 7465 int caretLine = getCaretLine(); | |
| 7466 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7467 setCaretLocation(); | |
| 7468 } | |
| 7469 } | |
| 7470 void setVariableLineHeight () { | |
| 7471 if (!fixedLineHeight) return; | |
| 7472 fixedLineHeight = false; | |
| 7473 renderer.calculateIdle(); | |
| 7474 } | |
| 7475 /** | |
| 7476 * Sets the indent of the specified lines. | |
| 7477 * <p> | |
| 7478 * Should not be called if a LineStyleListener has been set since the listener | |
| 7479 * maintains the line attributes. | |
| 7480 * </p><p> | |
| 7481 * All line attributes are maintained relative to the line text, not the | |
| 7482 * line index that is specified in this method call. | |
| 7483 * During text changes, when entire lines are inserted or removed, the line | |
| 7484 * attributes that are associated with the lines after the change | |
| 7485 * will "move" with their respective text. An entire line is defined as | |
| 7486 * extending from the first character on a line to the last and including the | |
| 7487 * line delimiter. | |
| 7488 * </p><p> | |
| 7489 * When two lines are joined by deleting a line delimiter, the top line | |
| 7490 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7491 * For all other text changes line attributes will remain unchanged. | |
| 7492 * </p> | |
| 7493 * | |
| 7494 * @param startLine first line the indent is applied to, 0 based | |
| 7495 * @param lineCount number of lines the indent applies to. | |
| 7496 * @param indent line indent | |
| 7497 * | |
| 7498 * @exception SWTException <ul> | |
| 7499 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7500 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7501 * </ul> | |
| 7502 * @exception IllegalArgumentException <ul> | |
| 7503 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7504 * </ul> | |
| 7505 * @see #setIndent(int) | |
| 7506 * @since 3.2 | |
| 7507 */ | |
| 7508 public void setLineIndent(int startLine, int lineCount, int indent) { | |
| 7509 checkWidget(); | |
| 7510 if (isListening(LineGetStyle)) return; | |
| 7511 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7512 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 7513 } | |
| 7514 | |
| 7515 renderer.setLineIndent(startLine, lineCount, indent); | |
| 7516 resetCache(startLine, lineCount); | |
| 7517 redrawLines(startLine, lineCount); | |
| 7518 int caretLine = getCaretLine(); | |
| 7519 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7520 setCaretLocation(); | |
| 7521 } | |
| 7522 } | |
| 7523 /** | |
| 7524 * Sets the justify of the specified lines. | |
| 7525 * <p> | |
| 7526 * Should not be called if a LineStyleListener has been set since the listener | |
| 7527 * maintains the line attributes. | |
| 7528 * </p><p> | |
| 7529 * All line attributes are maintained relative to the line text, not the | |
| 7530 * line index that is specified in this method call. | |
| 7531 * During text changes, when entire lines are inserted or removed, the line | |
| 7532 * attributes that are associated with the lines after the change | |
| 7533 * will "move" with their respective text. An entire line is defined as | |
| 7534 * extending from the first character on a line to the last and including the | |
| 7535 * line delimiter. | |
| 7536 * </p><p> | |
| 7537 * When two lines are joined by deleting a line delimiter, the top line | |
| 7538 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7539 * For all other text changes line attributes will remain unchanged. | |
| 7540 * </p> | |
| 7541 * | |
| 7542 * @param startLine first line the justify is applied to, 0 based | |
| 7543 * @param lineCount number of lines the justify applies to. | |
| 7544 * @param justify true if lines should be justified | |
| 7545 * | |
| 7546 * @exception SWTException <ul> | |
| 7547 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7548 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7549 * </ul> | |
| 7550 * @exception IllegalArgumentException <ul> | |
| 7551 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7552 * </ul> | |
| 7553 * @see #setJustify(bool) | |
| 7554 * @since 3.2 | |
| 7555 */ | |
| 7556 public void setLineJustify(int startLine, int lineCount, bool justify) { | |
| 7557 checkWidget(); | |
| 7558 if (isListening(LineGetStyle)) return; | |
| 7559 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7560 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 7561 } | |
| 7562 | |
| 7563 renderer.setLineJustify(startLine, lineCount, justify); | |
| 7564 resetCache(startLine, lineCount); | |
| 7565 redrawLines(startLine, lineCount); | |
| 7566 int caretLine = getCaretLine(); | |
| 7567 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7568 setCaretLocation(); | |
| 7569 } | |
| 7570 } | |
| 7571 /** | |
| 7572 * Sets the line spacing of the widget. The line spacing applies for all lines. | |
| 7573 * | |
| 7574 * @param lineSpacing the line spacing | |
| 7575 * @exception SWTException <ul> | |
| 7576 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7577 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7578 * </ul> | |
| 7579 * @since 3.2 | |
| 7580 */ | |
| 7581 public void setLineSpacing(int lineSpacing) { | |
| 7582 checkWidget(); | |
| 7583 if (this.lineSpacing is lineSpacing || lineSpacing < 0) return; | |
| 7584 this.lineSpacing = lineSpacing; | |
| 7585 setVariableLineHeight(); | |
| 7586 resetCache(0, content.getLineCount()); | |
| 7587 setCaretLocation(); | |
| 7588 super.redraw(); | |
| 7589 } | |
| 7590 void setMargins (int leftMargin, int topMargin, int rightMargin, int bottomMargin) { | |
| 7591 checkWidget(); | |
| 7592 this.leftMargin = leftMargin; | |
| 7593 this.topMargin = topMargin; | |
| 7594 this.rightMargin = rightMargin; | |
| 7595 this.bottomMargin = bottomMargin; | |
| 7596 setCaretLocation(); | |
| 7597 } | |
| 7598 /** | |
| 7599 * Flips selection anchor based on word selection direction. | |
| 7600 */ | |
| 7601 void setMouseWordSelectionAnchor() { | |
| 7602 if (clickCount > 1) { | |
| 7603 if (caretOffset < doubleClickSelection.x) { | |
| 7604 selectionAnchor = doubleClickSelection.y; | |
| 7605 } else if (caretOffset > doubleClickSelection.y) { | |
| 7606 selectionAnchor = doubleClickSelection.x; | |
| 7607 } | |
| 7608 } | |
| 7609 } | |
| 7610 /** | |
| 7611 * Sets the orientation of the receiver, which must be one | |
| 7612 * of the constants <code>SWT.LEFT_TO_RIGHT</code> or <code>SWT.RIGHT_TO_LEFT</code>. | |
| 7613 * | |
| 7614 * @param orientation new orientation style | |
| 7615 * | |
| 7616 * @exception SWTException <ul> | |
| 7617 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7618 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7619 * </ul> | |
| 7620 * | |
| 7621 * @since 2.1.2 | |
| 7622 */ | |
| 7623 public void setOrientation(int orientation) { | |
| 7624 if ((orientation & (SWT.RIGHT_TO_LEFT | SWT.LEFT_TO_RIGHT)) is 0) { | |
| 7625 return; | |
| 7626 } | |
| 7627 if ((orientation & SWT.RIGHT_TO_LEFT) !is 0 && (orientation & SWT.LEFT_TO_RIGHT) !is 0) { | |
| 7628 return; | |
| 7629 } | |
| 7630 if ((orientation & SWT.RIGHT_TO_LEFT) !is 0 && isMirrored()) { | |
| 7631 return; | |
| 7632 } | |
| 7633 if ((orientation & SWT.LEFT_TO_RIGHT) !is 0 && !isMirrored()) { | |
| 7634 return; | |
| 7635 } | |
| 7636 if (!BidiUtil.setOrientation(this, orientation)) { | |
| 7637 return; | |
| 7638 } | |
| 7639 isMirrored_ = (orientation & SWT.RIGHT_TO_LEFT) !is 0; | |
| 7640 caretDirection = SWT.NULL; | |
| 7641 resetCache(0, content.getLineCount()); | |
| 7642 setCaretLocation(); | |
| 7643 keyActionMap = null; | |
| 7644 createKeyBindings(); | |
| 7645 super.redraw(); | |
| 7646 } | |
| 7647 /** | |
| 7648 * Adjusts the maximum and the page size of the scroll bars to | |
| 7649 * reflect content width/length changes. | |
| 7650 * | |
| 7651 * @param vertical indicates if the vertical scrollbar also needs to be set | |
| 7652 */ | |
| 7653 void setScrollBars(bool vertical) { | |
| 7654 int inactive = 1; | |
| 7655 if (vertical || !isFixedLineHeight()) { | |
| 7656 ScrollBar verticalBar = getVerticalBar(); | |
| 7657 if (verticalBar !is null) { | |
| 7658 int maximum = renderer.getHeight(); | |
| 7659 // only set the real values if the scroll bar can be used | |
| 7660 // (ie. because the thumb size is less than the scroll maximum) | |
| 7661 // avoids flashing on Motif, fixes 1G7RE1J and 1G5SE92 | |
| 7662 if (clientAreaHeight < maximum) { | |
| 7663 verticalBar.setMaximum(maximum); | |
| 7664 verticalBar.setThumb(clientAreaHeight); | |
| 7665 verticalBar.setPageIncrement(clientAreaHeight); | |
| 7666 } else if (verticalBar.getThumb() !is inactive || verticalBar.getMaximum() !is inactive) { | |
| 7667 verticalBar.setValues( | |
| 7668 verticalBar.getSelection(), | |
| 7669 verticalBar.getMinimum(), | |
| 7670 inactive, | |
| 7671 inactive, | |
| 7672 verticalBar.getIncrement(), | |
| 7673 inactive); | |
| 7674 } | |
| 7675 } | |
| 7676 } | |
| 7677 ScrollBar horizontalBar = getHorizontalBar(); | |
| 7678 if (horizontalBar !is null && horizontalBar.getVisible()) { | |
| 7679 int maximum = renderer.getWidth(); | |
| 7680 // only set the real values if the scroll bar can be used | |
| 7681 // (ie. because the thumb size is less than the scroll maximum) | |
| 7682 // avoids flashing on Motif, fixes 1G7RE1J and 1G5SE92 | |
| 7683 if (clientAreaWidth < maximum) { | |
| 7684 horizontalBar.setMaximum(maximum); | |
| 7685 horizontalBar.setThumb(clientAreaWidth - leftMargin - rightMargin); | |
| 7686 horizontalBar.setPageIncrement(clientAreaWidth - leftMargin - rightMargin); | |
| 7687 } else if (horizontalBar.getThumb() !is inactive || horizontalBar.getMaximum() !is inactive) { | |
| 7688 horizontalBar.setValues( | |
| 7689 horizontalBar.getSelection(), | |
| 7690 horizontalBar.getMinimum(), | |
| 7691 inactive, | |
| 7692 inactive, | |
| 7693 horizontalBar.getIncrement(), | |
| 7694 inactive); | |
| 7695 } | |
| 7696 } | |
| 7697 } | |
| 7698 /** | |
| 7699 * Sets the selection to the given position and scrolls it into view. Equivalent to setSelection(start,start). | |
| 7700 * | |
| 7701 * @param start new caret position | |
| 7702 * @see #setSelection(int,int) | |
| 7703 * @exception SWTException <ul> | |
| 7704 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7705 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7706 * </ul> | |
| 7707 * @exception IllegalArgumentException <ul> | |
| 7708 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7709 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7710 * </ul> | |
| 7711 */ | |
| 7712 public void setSelection(int start) { | |
| 7713 // checkWidget test done in setSelectionRange | |
| 7714 setSelection(start, start); | |
| 7715 } | |
| 7716 /** | |
| 7717 * Sets the selection and scrolls it into view. | |
| 7718 * <p> | |
| 7719 * Indexing is zero based. Text selections are specified in terms of | |
| 7720 * caret positions. In a text widget that contains N characters, there are | |
| 7721 * N+1 caret positions, ranging from 0..N | |
| 7722 * </p> | |
| 7723 * | |
| 7724 * @param point x=selection start offset, y=selection end offset | |
| 7725 * The caret will be placed at the selection start when x > y. | |
| 7726 * @see #setSelection(int,int) | |
| 7727 * @exception SWTException <ul> | |
| 7728 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7729 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7730 * </ul> | |
| 7731 * @exception IllegalArgumentException <ul> | |
| 7732 * <li>ERROR_NULL_ARGUMENT when point is null</li> | |
| 7733 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7734 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7735 * </ul> | |
| 7736 */ | |
| 7737 public void setSelection(Point point) { | |
| 7738 checkWidget(); | |
| 7739 if (point is null) SWT.error (SWT.ERROR_NULL_ARGUMENT); | |
| 7740 setSelection(point.x, point.y); | |
| 7741 } | |
| 7742 /** | |
| 7743 * Sets the receiver's selection background color to the color specified | |
| 7744 * by the argument, or to the default system color for the control | |
| 7745 * if the argument is null. | |
| 7746 * | |
| 7747 * @param color the new color (or null) | |
| 7748 * | |
| 7749 * @exception IllegalArgumentException <ul> | |
| 7750 * <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li> | |
| 7751 * </ul> | |
| 7752 * @exception SWTException <ul> | |
| 7753 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7754 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7755 * </ul> | |
| 7756 * @since 2.1 | |
| 7757 */ | |
| 7758 public void setSelectionBackground (Color color) { | |
| 7759 checkWidget (); | |
| 7760 if (color !is null) { | |
| 7761 if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 7762 } | |
| 7763 selectionBackground = color; | |
| 7764 super.redraw(); | |
| 7765 } | |
| 7766 /** | |
| 7767 * Sets the receiver's selection foreground color to the color specified | |
| 7768 * by the argument, or to the default system color for the control | |
| 7769 * if the argument is null. | |
| 7770 * <p> | |
| 7771 * Note that this is a <em>HINT</em>. Some platforms do not allow the application | |
| 7772 * to change the selection foreground color. | |
| 7773 * </p> | |
| 7774 * @param color the new color (or null) | |
| 7775 * | |
| 7776 * @exception IllegalArgumentException <ul> | |
| 7777 * <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li> | |
| 7778 * </ul> | |
| 7779 * @exception SWTException <ul> | |
| 7780 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7781 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7782 * </ul> | |
| 7783 * @since 2.1 | |
| 7784 */ | |
| 7785 public void setSelectionForeground (Color color) { | |
| 7786 checkWidget (); | |
| 7787 if (color !is null) { | |
| 7788 if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 7789 } | |
| 7790 selectionForeground = color; | |
| 7791 super.redraw(); | |
| 7792 } | |
| 7793 /** | |
| 7794 * Sets the selection and scrolls it into view. | |
| 7795 * <p> | |
| 7796 * Indexing is zero based. Text selections are specified in terms of | |
| 7797 * caret positions. In a text widget that contains N characters, there are | |
| 7798 * N+1 caret positions, ranging from 0..N | |
| 7799 * </p> | |
| 7800 * | |
| 7801 * @param start selection start offset. The caret will be placed at the | |
| 7802 * selection start when start > end. | |
| 7803 * @param end selection end offset | |
| 7804 * @see #setSelectionRange(int,int) | |
| 7805 * @exception SWTException <ul> | |
| 7806 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7807 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7808 * </ul> | |
| 7809 * @exception IllegalArgumentException <ul> | |
| 7810 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7811 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7812 * </ul> | |
| 7813 */ | |
| 7814 public void setSelection(int start, int end) { | |
| 7815 setSelectionRange(start, end - start); | |
| 7816 showSelection(); | |
| 7817 } | |
| 7818 /** | |
| 7819 * Sets the selection. | |
| 7820 * <p> | |
| 7821 * The new selection may not be visible. Call showSelection to scroll | |
| 7822 * the selection into view. | |
| 7823 * </p> | |
| 7824 * | |
| 7825 * @param start offset of the first selected character, start >= 0 must be true. | |
| 7826 * @param length number of characters to select, 0 <= start + length | |
| 7827 * <= getCharCount() must be true. | |
| 7828 * A negative length places the caret at the selection start. | |
| 7829 * @param sendEvent a Selection event is sent when set to true and when | |
| 7830 * the selection is reset. | |
| 7831 */ | |
| 7832 void setSelection(int start, int length, bool sendEvent) { | |
| 7833 int end = start + length; | |
| 7834 if (start > end) { | |
| 7835 int temp = end; | |
| 7836 end = start; | |
| 7837 start = temp; | |
| 7838 } | |
| 7839 // is the selection range different or is the selection direction | |
| 7840 // different? | |
| 7841 if (selection.x !is start || selection.y !is end || | |
| 7842 (length > 0 && selectionAnchor !is selection.x) || | |
| 7843 (length < 0 && selectionAnchor !is selection.y)) { | |
| 7844 clearSelection(sendEvent); | |
| 7845 if (length < 0) { | |
| 7846 selectionAnchor = selection.y = end; | |
| 7847 caretOffset = selection.x = start; | |
| 7848 } else { | |
| 7849 selectionAnchor = selection.x = start; | |
| 7850 caretOffset = selection.y = end; | |
| 7851 } | |
| 7852 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 7853 internalRedrawRange(selection.x, selection.y - selection.x); | |
| 7854 } | |
| 7855 } | |
| 7856 /** | |
| 7857 * Sets the selection. | |
| 7858 * <p> | |
| 7859 * The new selection may not be visible. Call showSelection to scroll the selection | |
| 7860 * into view. A negative length places the caret at the visual start of the selection. | |
| 7861 * </p> | |
| 7862 * | |
| 7863 * @param start offset of the first selected character | |
| 7864 * @param length number of characters to select | |
| 7865 * | |
| 7866 * @exception SWTException <ul> | |
| 7867 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7868 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7869 * </ul> | |
| 7870 * @exception IllegalArgumentException <ul> | |
| 7871 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7872 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7873 * </ul> | |
| 7874 */ | |
| 7875 public void setSelectionRange(int start, int length) { | |
| 7876 checkWidget(); | |
| 7877 int contentLength = getCharCount(); | |
| 7878 start = Math.max(0, Math.min (start, contentLength)); | |
| 7879 int end = start + length; | |
| 7880 if (end < 0) { | |
| 7881 length = -start; | |
| 7882 } else { | |
| 7883 if (end > contentLength) length = contentLength - start; | |
| 7884 } | |
| 7885 if (isLineDelimiter(start) || isLineDelimiter(start + length)) { | |
| 7886 // the start offset or end offset of the selection range is inside a | |
| 7887 // multi byte line delimiter. This is an illegal operation and an exception | |
| 7888 // is thrown. Fixes 1GDKK3R | |
| 7889 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 7890 } | |
| 7891 setSelection(start, length, false); | |
| 7892 setCaretLocation(); | |
| 7893 } | |
| 7894 /** | |
| 7895 * Adds the specified style. | |
| 7896 * <p> | |
| 7897 * The new style overwrites existing styles for the specified range. | |
| 7898 * Existing style ranges are adjusted if they partially overlap with | |
| 7899 * the new style. To clear an individual style, call setStyleRange | |
| 7900 * with a StyleRange that has null attributes. | |
| 7901 * </p><p> | |
| 7902 * Should not be called if a LineStyleListener has been set since the | |
| 7903 * listener maintains the styles. | |
| 7904 * </p> | |
| 7905 * | |
| 7906 * @param range StyleRange object containing the style information. | |
| 7907 * Overwrites the old style in the given range. May be null to delete | |
| 7908 * all styles. | |
| 7909 * @exception SWTException <ul> | |
| 7910 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7911 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7912 * </ul> | |
| 7913 * @exception IllegalArgumentException <ul> | |
| 7914 * <li>ERROR_INVALID_RANGE when the style range is outside the valid range (> getCharCount())</li> | |
| 7915 * </ul> | |
| 7916 */ | |
| 7917 public void setStyleRange(StyleRange range) { | |
| 7918 checkWidget(); | |
| 7919 if (isListening(LineGetStyle)) return; | |
| 7920 if (range !is null) { | |
| 7921 if (range.isUnstyled()) { | |
| 7922 setStyleRanges(range.start, range.length, null, null, false); | |
| 7923 } else { | |
| 7924 setStyleRanges(range.start, 0, null, [range], false); | |
| 7925 } | |
| 7926 } else { | |
| 7927 setStyleRanges(0, 0, null, null, true); | |
| 7928 } | |
| 7929 } | |
| 7930 /** | |
| 7931 * Clears the styles in the range specified by <code>start</code> and | |
| 7932 * <code>length</code> and adds the new styles. | |
| 7933 * <p> | |
| 7934 * The ranges array contains start and length pairs. Each pair refers to | |
| 7935 * the corresponding style in the styles array. For example, the pair | |
| 7936 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 7937 * at styles[n/2]. The range fields within each StyleRange are ignored. | |
| 7938 * If ranges or styles is null, the specified range is cleared. | |
| 7939 * </p><p> | |
| 7940 * Note: It is expected that the same instance of a StyleRange will occur | |
| 7941 * multiple times within the styles array, reducing memory usage. | |
| 7942 * </p><p> | |
| 7943 * Should not be called if a LineStyleListener has been set since the | |
| 7944 * listener maintains the styles. | |
| 7945 * </p> | |
| 7946 * | |
| 7947 * @param start offset of first character where styles will be deleted | |
| 7948 * @param length length of the range to delete styles in | |
| 7949 * @param ranges the array of ranges. The ranges must not overlap and must be in order. | |
| 7950 * @param styles the array of StyleRanges. The range fields within the StyleRange are unused. | |
| 7951 * | |
| 7952 * @exception SWTException <ul> | |
| 7953 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7954 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7955 * </ul> | |
| 7956 * @exception IllegalArgumentException <ul> | |
| 7957 * <li>ERROR_NULL_ARGUMENT when an element in the styles array is null</li> | |
| 7958 * <li>ERROR_INVALID_RANGE when the number of ranges and style do not match (ranges.length * 2 is styles.length)</li> | |
| 7959 * <li>ERROR_INVALID_RANGE when a range is outside the valid range (> getCharCount() or less than zero)</li> | |
| 7960 * <li>ERROR_INVALID_RANGE when a range overlaps</li> | |
| 7961 * </ul> | |
| 7962 * | |
| 7963 * @since 3.2 | |
| 7964 */ | |
| 7965 public void setStyleRanges(int start, int length, int[] ranges, StyleRange[] styles) { | |
| 7966 checkWidget(); | |
| 7967 if (isListening(LineGetStyle)) return; | |
| 7968 if (ranges is null || styles is null) { | |
| 7969 setStyleRanges(start, length, null, null, false); | |
| 7970 } else { | |
| 7971 setStyleRanges(start, length, ranges, styles, false); | |
| 7972 } | |
| 7973 } | |
| 7974 /** | |
| 7975 * Sets styles to be used for rendering the widget content. | |
| 7976 * <p> | |
| 7977 * All styles in the widget will be replaced with the given set of ranges and styles. | |
| 7978 * The ranges array contains start and length pairs. Each pair refers to | |
| 7979 * the corresponding style in the styles array. For example, the pair | |
| 7980 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 7981 * at styles[n/2]. The range fields within each StyleRange are ignored. | |
| 7982 * If either argument is null, the styles are cleared. | |
| 7983 * </p><p> | |
| 7984 * Note: It is expected that the same instance of a StyleRange will occur | |
| 7985 * multiple times within the styles array, reducing memory usage. | |
| 7986 * </p><p> | |
| 7987 * Should not be called if a LineStyleListener has been set since the | |
| 7988 * listener maintains the styles. | |
| 7989 * </p> | |
| 7990 * | |
| 7991 * @param ranges the array of ranges. The ranges must not overlap and must be in order. | |
| 7992 * @param styles the array of StyleRanges. The range fields within the StyleRange are unused. | |
| 7993 * | |
| 7994 * @exception SWTException <ul> | |
| 7995 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7996 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7997 * </ul> | |
| 7998 * @exception IllegalArgumentException <ul> | |
| 7999 * <li>ERROR_NULL_ARGUMENT when an element in the styles array is null</li> | |
| 8000 * <li>ERROR_INVALID_RANGE when the number of ranges and style do not match (ranges.length * 2 is styles.length)</li> | |
| 8001 * <li>ERROR_INVALID_RANGE when a range is outside the valid range (> getCharCount() or less than zero)</li> | |
| 8002 * <li>ERROR_INVALID_RANGE when a range overlaps</li> | |
| 8003 * </ul> | |
| 8004 * | |
| 8005 * @since 3.2 | |
| 8006 */ | |
| 8007 public void setStyleRanges(int[] ranges, StyleRange[] styles) { | |
| 8008 checkWidget(); | |
| 8009 if (isListening(LineGetStyle)) return; | |
| 8010 if (ranges is null || styles is null) { | |
| 8011 setStyleRanges(0, 0, null, null, true); | |
| 8012 } else { | |
| 8013 setStyleRanges(0, 0, ranges, styles, true); | |
| 8014 } | |
| 8015 } | |
| 8016 void setStyleRanges(int start, int length, int[] ranges, StyleRange[] styles, bool reset) { | |
| 8017 int charCount = content.getCharCount(); | |
| 8018 int end = start + length; | |
| 8019 if (start > end || start < 0) { | |
| 8020 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 8021 } | |
| 8022 if (styles !is null) { | |
| 8023 if (end > charCount) { | |
| 8024 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 8025 } | |
| 8026 if (ranges !is null) { | |
| 8027 if (ranges.length !is styles.length << 1) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 8028 } | |
| 8029 int lastOffset = 0; | |
| 8030 bool variableHeight = false; | |
| 8031 for (int i = 0; i < styles.length; i ++) { | |
| 8032 if (styles[i] is null) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 8033 int rangeStart, rangeLength; | |
| 8034 if (ranges !is null) { | |
| 8035 rangeStart = ranges[i << 1]; | |
| 8036 rangeLength = ranges[(i << 1) + 1]; | |
| 8037 } else { | |
| 8038 rangeStart = styles[i].start; | |
| 8039 rangeLength = styles[i].length; | |
| 8040 } | |
| 8041 if (rangeLength < 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 8042 if (!(0 <= rangeStart && rangeStart + rangeLength <= charCount)) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 8043 if (lastOffset > rangeStart) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 8044 variableHeight |= styles[i].isVariableHeight(); | |
| 8045 lastOffset = rangeStart + rangeLength; | |
| 8046 } | |
| 8047 if (variableHeight) setVariableLineHeight(); | |
| 8048 } | |
| 8049 int rangeStart = start, rangeEnd = end; | |
| 8050 if (styles !is null && styles.length > 0) { | |
| 8051 if (ranges !is null) { | |
| 8052 rangeStart = ranges[0]; | |
| 8053 rangeEnd = ranges[ranges.length - 2] + ranges[ranges.length - 1]; | |
| 8054 } else { | |
| 8055 rangeStart = styles[0].start; | |
| 8056 rangeEnd = styles[styles.length - 1].start + styles[styles.length - 1].length; | |
| 8057 } | |
| 8058 } | |
| 8059 int lastLineBottom = 0; | |
| 8060 if (!isFixedLineHeight() && !reset) { | |
| 8061 int lineEnd = content.getLineAtOffset(Math.max(end, rangeEnd)); | |
| 8062 int partialTopIndex = getPartialTopIndex(); | |
| 8063 int partialBottomIndex = getPartialBottomIndex(); | |
| 8064 if (partialTopIndex <= lineEnd && lineEnd <= partialBottomIndex) { | |
| 8065 lastLineBottom = getLinePixel(lineEnd + 1); | |
| 8066 } | |
| 8067 } | |
| 8068 if (reset) { | |
| 8069 renderer.setStyleRanges(null, null); | |
| 8070 } else { | |
| 8071 renderer.updateRanges(start, length, length); | |
| 8072 } | |
| 8073 if (styles !is null && styles.length > 0) { | |
| 8074 renderer.setStyleRanges(ranges, styles); | |
| 8075 } | |
| 8076 if (reset) { | |
| 8077 resetCache(0, content.getLineCount()); | |
| 8078 super.redraw(); | |
| 8079 } else { | |
| 8080 int lineStart = content.getLineAtOffset(Math.min(start, rangeStart)); | |
| 8081 int lineEnd = content.getLineAtOffset(Math.max(end, rangeEnd)); | |
| 8082 resetCache(lineStart, lineEnd - lineStart + 1); | |
| 8083 int partialTopIndex = getPartialTopIndex(); | |
| 8084 int partialBottomIndex = getPartialBottomIndex(); | |
| 8085 if (!(lineStart > partialBottomIndex || lineEnd < partialTopIndex)) { | |
| 8086 int y = 0; | |
| 8087 int height = clientAreaHeight; | |
| 8088 if (partialTopIndex <= lineStart && lineStart <= partialBottomIndex) { | |
| 8089 int lineTop = Math.max(y, getLinePixel(lineStart)); | |
| 8090 y = lineTop; | |
| 8091 height -= lineTop; | |
| 8092 } | |
| 8093 if (partialTopIndex <= lineEnd && lineEnd <= partialBottomIndex) { | |
| 8094 int newLastLineBottom = getLinePixel(lineEnd + 1); | |
| 8095 if (!isFixedLineHeight()) { | |
| 8096 scrollText(lastLineBottom, newLastLineBottom); | |
| 8097 } | |
| 8098 height = newLastLineBottom - y; | |
| 8099 } | |
| 8100 super.redraw(0, y, clientAreaWidth, height, false); | |
| 8101 } | |
| 8102 } | |
| 8103 setCaretLocation(); | |
| 8104 } | |
| 8105 /** | |
| 8106 * Sets styles to be used for rendering the widget content. All styles | |
| 8107 * in the widget will be replaced with the given set of styles. | |
| 8108 * <p> | |
| 8109 * Note: Because a StyleRange includes the start and length, the | |
| 8110 * same instance cannot occur multiple times in the array of styles. | |
| 8111 * If the same style attributes, such as font and color, occur in | |
| 8112 * multiple StyleRanges, <code>setStyleRanges(int[], StyleRange[])</code> | |
| 8113 * can be used to share styles and reduce memory usage. | |
| 8114 * </p><p> | |
| 8115 * Should not be called if a LineStyleListener has been set since the | |
| 8116 * listener maintains the styles. | |
| 8117 * </p> | |
| 8118 * | |
| 8119 * @param ranges StyleRange objects containing the style information. | |
| 8120 * The ranges should not overlap. The style rendering is undefined if | |
| 8121 * the ranges do overlap. Must not be null. The styles need to be in order. | |
| 8122 * @exception SWTException <ul> | |
| 8123 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8124 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8125 * </ul> | |
| 8126 * @exception IllegalArgumentException <ul> | |
| 8127 * <li>ERROR_INVALID_RANGE when the last of the style ranges is outside the valid range (> getCharCount())</li> | |
| 8128 * </ul> | |
| 8129 * | |
| 8130 * @see #setStyleRanges(int[], StyleRange[]) | |
| 8131 */ | |
| 8132 public void setStyleRanges(StyleRange[] ranges) { | |
| 8133 checkWidget(); | |
| 8134 if (isListening(LineGetStyle)) return; | |
| 8135 // SWT extension: allow null for zero length string | |
| 8136 //if (ranges is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 8137 setStyleRanges(0, 0, null, ranges, true); | |
| 8138 } | |
| 8139 /** | |
| 8140 * Sets the tab width. | |
| 8141 * | |
| 8142 * @param tabs tab width measured in characters. | |
| 8143 * @exception SWTException <ul> | |
| 8144 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8145 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8146 * </ul> | |
| 8147 */ | |
| 8148 public void setTabs(int tabs) { | |
| 8149 checkWidget(); | |
| 8150 tabLength = tabs; | |
| 8151 renderer.setFont(null, tabs); | |
| 8152 resetCache(0, content.getLineCount()); | |
| 8153 setCaretLocation(); | |
| 8154 super.redraw(); | |
| 8155 } | |
| 8156 /** | |
| 8157 * Sets the widget content. | |
| 8158 * If the widget has the SWT.SINGLE style and "text" contains more than | |
| 8159 * one line, only the first line is rendered but the text is stored | |
| 8160 * unchanged. A subsequent call to getText will return the same text | |
| 8161 * that was set. | |
| 8162 * <p> | |
| 8163 * <b>Note:</b> Only a single line of text should be set when the SWT.SINGLE | |
| 8164 * style is used. | |
| 8165 * </p> | |
| 8166 * | |
| 8167 * @param text new widget content. Replaces existing content. Line styles | |
| 8168 * that were set using StyledText API are discarded. The | |
| 8169 * current selection is also discarded. | |
| 8170 * @exception SWTException <ul> | |
| 8171 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8172 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8173 * </ul> | |
| 8174 */ | |
| 8175 public void setText(String text) { | |
| 8176 checkWidget(); | |
| 8177 // SWT extension: allow null for zero length string | |
| 8178 // if (text is null) { | |
| 8179 // SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 8180 // } | |
| 8181 Event event = new Event(); | |
| 8182 event.start = 0; | |
| 8183 event.end = getCharCount(); | |
| 8184 event.text = text; | |
| 8185 event.doit = true; | |
| 8186 notifyListeners(SWT.Verify, event); | |
| 8187 if (event.doit) { | |
| 8188 StyledTextEvent styledTextEvent = null; | |
| 8189 if (isListening(ExtendedModify)) { | |
| 8190 styledTextEvent = new StyledTextEvent(content); | |
| 8191 styledTextEvent.start = event.start; | |
| 8192 styledTextEvent.end = event.start + event.text.length; | |
| 8193 styledTextEvent.text = content.getTextRange(event.start, event.end - event.start); | |
| 8194 } | |
| 8195 content.setText(event.text); | |
| 8196 sendModifyEvent(event); | |
| 8197 if (styledTextEvent !is null) { | |
| 8198 notifyListeners(ExtendedModify, styledTextEvent); | |
| 8199 } | |
| 8200 } | |
| 8201 } | |
| 8202 /** | |
| 8203 * Sets the text limit to the specified number of characters. | |
| 8204 * <p> | |
| 8205 * The text limit specifies the amount of text that | |
| 8206 * the user can type into the widget. | |
| 8207 * </p> | |
| 8208 * | |
| 8209 * @param limit the new text limit. | |
| 8210 * @exception SWTException <ul> | |
| 8211 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8212 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8213 * </ul> | |
| 8214 * @exception IllegalArgumentException <ul> | |
| 8215 * <li>ERROR_CANNOT_BE_ZERO when limit is 0</li> | |
| 8216 * </ul> | |
| 8217 */ | |
| 8218 public void setTextLimit(int limit) { | |
| 8219 checkWidget(); | |
| 8220 if (limit is 0) { | |
| 8221 SWT.error(SWT.ERROR_CANNOT_BE_ZERO); | |
| 8222 } | |
| 8223 textLimit = limit; | |
| 8224 } | |
| 8225 /** | |
| 8226 * Sets the top index. Do nothing if there is no text set. | |
| 8227 * <p> | |
| 8228 * The top index is the index of the line that is currently at the top | |
| 8229 * of the widget. The top index changes when the widget is scrolled. | |
| 8230 * Indexing starts from zero. | |
| 8231 * Note: The top index is reset to 0 when new text is set in the widget. | |
| 8232 * </p> | |
| 8233 * | |
| 8234 * @param topIndex new top index. Must be between 0 and | |
| 8235 * getLineCount() - fully visible lines per page. If no lines are fully | |
| 8236 * visible the maximum value is getLineCount() - 1. An out of range | |
| 8237 * index will be adjusted accordingly. | |
| 8238 * @exception SWTException <ul> | |
| 8239 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8240 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8241 * </ul> | |
| 8242 */ | |
| 8243 public void setTopIndex(int topIndex) { | |
| 8244 checkWidget(); | |
| 8245 if (getCharCount() is 0) { | |
| 8246 return; | |
| 8247 } | |
| 8248 int lineCount = content.getLineCount(), pixel; | |
| 8249 if (isFixedLineHeight()) { | |
| 8250 int pageSize = Math.max(1, Math.min(lineCount, getLineCountWhole())); | |
| 8251 if (topIndex < 0) { | |
| 8252 topIndex = 0; | |
| 8253 } else if (topIndex > lineCount - pageSize) { | |
| 8254 topIndex = lineCount - pageSize; | |
| 8255 } | |
| 8256 pixel = getLinePixel(topIndex); | |
| 8257 } else { | |
| 8258 topIndex = Math.max(0, Math.min(lineCount - 1, topIndex)); | |
| 8259 pixel = getLinePixel(topIndex); | |
| 8260 if (pixel > 0) { | |
| 8261 pixel = getAvailableHeightBellow(pixel); | |
| 8262 } else { | |
| 8263 pixel = getAvailableHeightAbove(pixel); | |
| 8264 } | |
| 8265 } | |
| 8266 scrollVertical(pixel, true); | |
| 8267 } | |
| 8268 /** | |
| 8269 * Sets the top pixel offset. Do nothing if there is no text set. | |
| 8270 * <p> | |
| 8271 * The top pixel offset is the vertical pixel offset of the widget. The | |
| 8272 * widget is scrolled so that the given pixel position is at the top. | |
| 8273 * The top index is adjusted to the corresponding top line. | |
| 8274 * Note: The top pixel is reset to 0 when new text is set in the widget. | |
| 8275 * </p> | |
| 8276 * | |
| 8277 * @param pixel new top pixel offset. Must be between 0 and | |
| 8278 * (getLineCount() - visible lines per page) / getLineHeight()). An out | |
| 8279 * of range offset will be adjusted accordingly. | |
| 8280 * @exception SWTException <ul> | |
| 8281 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8282 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8283 * </ul> | |
| 8284 * @since 2.0 | |
| 8285 */ | |
| 8286 public void setTopPixel(int pixel) { | |
| 8287 checkWidget(); | |
| 8288 if (getCharCount() is 0) { | |
| 8289 return; | |
| 8290 } | |
| 8291 if (pixel < 0) pixel = 0; | |
| 8292 int lineCount = content.getLineCount(); | |
| 8293 int height = clientAreaHeight - topMargin - bottomMargin; | |
| 8294 int verticalOffset = getVerticalScrollOffset(); | |
| 8295 if (isFixedLineHeight()) { | |
| 8296 int maxTopPixel = Math.max(0, lineCount * getVerticalIncrement() - height); | |
| 8297 if (pixel > maxTopPixel) pixel = maxTopPixel; | |
| 8298 pixel -= verticalOffset; | |
| 8299 } else { | |
| 8300 pixel -= verticalOffset; | |
| 8301 if (pixel > 0) { | |
| 8302 pixel = getAvailableHeightBellow(pixel); | |
| 8303 } | |
| 8304 } | |
| 8305 scrollVertical(pixel, true); | |
| 8306 } | |
| 8307 /** | |
| 8308 * Sets whether the widget wraps lines. | |
| 8309 * <p> | |
| 8310 * This overrides the creation style bit SWT.WRAP. | |
| 8311 * </p> | |
| 8312 * | |
| 8313 * @param wrap true=widget wraps lines, false=widget does not wrap lines | |
| 8314 * @since 2.0 | |
| 8315 */ | |
| 8316 public void setWordWrap(bool wrap) { | |
| 8317 checkWidget(); | |
| 8318 if ((getStyle() & SWT.SINGLE) !is 0) return; | |
| 8319 if (wordWrap is wrap) return; | |
| 8320 wordWrap = wrap; | |
| 8321 setVariableLineHeight(); | |
| 8322 resetCache(0, content.getLineCount()); | |
| 8323 horizontalScrollOffset = 0; | |
| 8324 ScrollBar horizontalBar = getHorizontalBar(); | |
| 8325 if (horizontalBar !is null) { | |
| 8326 horizontalBar.setVisible(!wordWrap); | |
| 8327 } | |
| 8328 setScrollBars(true); | |
| 8329 setCaretLocation(); | |
| 8330 super.redraw(); | |
| 8331 } | |
|
120
536e43f63c81
Comprehensive update for Win32/Linux32 dmd-2.053/dmd-1.068+Tango-r5661
Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
113
diff
changeset
|
8332 // DWT: If necessary, scroll to show the location |
| 25 | 8333 bool showLocation(Rectangle rect, bool scrollPage) { |
| 8334 int clientAreaWidth = this.clientAreaWidth - leftMargin - rightMargin; | |
| 8335 int clientAreaHeight = this.clientAreaHeight - topMargin - bottomMargin; | |
| 8336 bool scrolled = false; | |
| 8337 if (rect.y <= topMargin) { | |
| 8338 scrolled = scrollVertical(rect.y - topMargin, true); | |
| 8339 } else if (rect.y + rect.height > clientAreaHeight) { | |
| 8340 if (clientAreaHeight is 0) { | |
| 8341 scrolled = scrollVertical(rect.y, true); | |
| 8342 } else { | |
| 8343 scrolled = scrollVertical(rect.y + rect.height - clientAreaHeight, true); | |
| 8344 } | |
| 8345 } | |
| 8346 if (clientAreaWidth > 0) { | |
| 8347 int minScroll = scrollPage ? clientAreaWidth / 4 : 0; | |
| 8348 if (rect.x < leftMargin) { | |
| 8349 int scrollWidth = Math.max(leftMargin - rect.x, minScroll); | |
| 8350 int maxScroll = horizontalScrollOffset; | |
| 8351 scrolled = scrollHorizontal(-Math.min(maxScroll, scrollWidth), true); | |
| 8352 } else if (rect.x + rect.width > clientAreaWidth) { | |
| 8353 int scrollWidth = Math.max(rect.x + rect.width - clientAreaWidth, minScroll); | |
| 8354 int maxScroll = renderer.getWidth() - horizontalScrollOffset - this.clientAreaWidth; | |
| 8355 scrolled = scrollHorizontal(Math.min(maxScroll, scrollWidth), true); | |
| 8356 } | |
| 8357 } | |
| 8358 return scrolled; | |
| 8359 } | |
| 8360 /** | |
| 8361 * Sets the caret location and scrolls the caret offset into view. | |
| 8362 */ | |
| 8363 void showCaret() { | |
| 8364 Rectangle bounds = getBoundsAtOffset(caretOffset); | |
| 8365 if (!showLocation(bounds, true)) { | |
| 8366 setCaretLocation(); | |
| 8367 } | |
| 8368 } | |
| 8369 /** | |
| 8370 * Scrolls the selection into view. | |
| 8371 * <p> | |
| 8372 * The end of the selection will be scrolled into view. | |
| 8373 * Note that if a right-to-left selection exists, the end of the selection is | |
| 8374 * the visual beginning of the selection (i.e., where the caret is located). | |
| 8375 * </p> | |
| 8376 * | |
| 8377 * @exception SWTException <ul> | |
| 8378 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8379 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8380 * </ul> | |
| 8381 */ | |
| 8382 public void showSelection() { | |
| 8383 checkWidget(); | |
| 8384 // is selection from right-to-left? | |
| 8385 bool rightToLeft = caretOffset is selection.x; | |
| 8386 int startOffset, endOffset; | |
| 8387 if (rightToLeft) { | |
| 8388 startOffset = selection.y; | |
| 8389 endOffset = selection.x; | |
| 8390 } else { | |
| 8391 startOffset = selection.x; | |
| 8392 endOffset = selection.y; | |
| 8393 } | |
| 8394 | |
| 8395 Rectangle startBounds = getBoundsAtOffset(startOffset); | |
| 8396 Rectangle endBounds = getBoundsAtOffset(endOffset); | |
| 8397 | |
| 8398 // can the selection be fully displayed within the widget's visible width? | |
| 8399 int w = clientAreaWidth - leftMargin - rightMargin; | |
| 8400 bool selectionFits = rightToLeft ? startBounds.x - endBounds.x <= w : endBounds.x - startBounds.x <= w; | |
| 8401 if (selectionFits) { | |
| 8402 // show as much of the selection as possible by first showing | |
| 8403 // the start of the selection | |
| 8404 if (showLocation(startBounds, false)) { | |
| 8405 // endX value could change if showing startX caused a scroll to occur | |
| 8406 endBounds = getBoundsAtOffset(endOffset); | |
| 8407 } | |
| 8408 // the character at endOffset is not part of the selection | |
| 8409 endBounds.width = 0; | |
| 8410 showLocation(endBounds, false); | |
| 8411 } else { | |
| 8412 // just show the end of the selection since the selection start | |
| 8413 // will not be visible | |
| 8414 showLocation(endBounds, true); | |
| 8415 } | |
| 8416 } | |
| 8417 /** | |
| 8418 * Updates the selection and caret position depending on the text change. | |
| 8419 * <p> | |
| 8420 * If the selection intersects with the replaced text, the selection is | |
| 8421 * reset and the caret moved to the end of the new text. | |
| 8422 * If the selection is behind the replaced text it is moved so that the | |
| 8423 * same text remains selected. If the selection is before the replaced text | |
| 8424 * it is left unchanged. | |
| 8425 * </p> | |
| 8426 * | |
| 8427 * @param startOffset offset of the text change | |
| 8428 * @param replacedLength length of text being replaced | |
| 8429 * @param newLength length of new text | |
| 8430 */ | |
| 8431 void updateSelection(int startOffset, int replacedLength, int newLength) { | |
| 8432 if (selection.y <= startOffset) { | |
| 8433 // selection ends before text change | |
| 8434 if (wordWrap) setCaretLocation(); | |
| 8435 return; | |
| 8436 } | |
| 8437 if (selection.x < startOffset) { | |
| 8438 // clear selection fragment before text change | |
| 8439 internalRedrawRange(selection.x, startOffset - selection.x); | |
| 8440 } | |
| 8441 if (selection.y > startOffset + replacedLength && selection.x < startOffset + replacedLength) { | |
| 8442 // clear selection fragment after text change. | |
| 8443 // do this only when the selection is actually affected by the | |
| 8444 // change. Selection is only affected if it intersects the change (1GDY217). | |
| 8445 int netNewLength = newLength - replacedLength; | |
| 8446 int redrawStart = startOffset + newLength; | |
| 8447 internalRedrawRange(redrawStart, selection.y + netNewLength - redrawStart); | |
| 8448 } | |
|
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8449 selectedTextValid = false; |
| 25 | 8450 if (selection.y > startOffset && selection.x < startOffset + replacedLength) { |
| 8451 // selection intersects replaced text. set caret behind text change | |
| 8452 setSelection(startOffset + newLength, 0, true); | |
| 8453 } else { | |
| 8454 // move selection to keep same text selected | |
| 8455 setSelection(selection.x + newLength - replacedLength, selection.y - selection.x, true); | |
| 8456 } | |
| 8457 setCaretLocation(); | |
| 8458 } | |
|
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8459 |
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536e43f63c81
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parents:
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diff
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8460 // DWT: to use instead of "offsetInLine - 1" |
|
536e43f63c81
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parents:
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8461 int getPreviousCharOffset(String F = __FILE__, uint L = __LINE__)(int lineIndex, int offsetInLine) { |
|
536e43f63c81
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Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
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8462 String line = content.getLine(lineIndex); |
|
536e43f63c81
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parents:
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8463 if(offsetInLine < 0 || offsetInLine > line.length) { |
|
536e43f63c81
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Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
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8464 getDwtLogger().warn(F, L, Format("Clamped UTF-8 offset:\noffsetInLine = {}, line.length = {}, line = {}", offsetInLine, line.length, line)); |
|
536e43f63c81
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Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
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8465 return offsetInLine - 1; |
|
536e43f63c81
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parents:
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8466 } |
|
536e43f63c81
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parents:
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8467 return line.offsetBefore(offsetInLine); |
|
536e43f63c81
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parents:
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diff
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8468 } |
|
536e43f63c81
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Denis Shelomovskij <verylonglogin.reg@gmail.com>
parents:
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8469 } |