Mercurial > projects > dwt2
annotate org.eclipse.swt.gtk.linux.x86/src/org/eclipse/swt/custom/StyledText.d @ 49:7a2dd761a8b2
more work until dmd 2.026 linux segfaults.
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Fri, 27 Mar 2009 12:59:54 +0100 |
| parents | ddbfe84d86df |
| children | c01d033c633a |
| 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 | |
| 48 | 85 version(Tango){ |
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86 static import tango.io.model.IFile; |
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87 import tango.util.Convert; |
| 48 | 88 } else { // Phobos |
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89 static import std.string; |
| 48 | 90 } |
| 25 | 91 import java.lang.all; |
| 92 | |
| 93 | |
| 94 /** | |
| 95 * A StyledText is an editable user interface object that displays lines | |
| 96 * of text. The following style attributes can be defined for the text: | |
| 97 * <ul> | |
| 98 * <li>foreground color | |
| 99 * <li>background color | |
| 100 * <li>font style (bold, italic, bold-italic, regular) | |
| 101 * <li>underline | |
| 102 * <li>strikeout | |
| 103 * </ul> | |
| 104 * <p> | |
| 105 * In addition to text style attributes, the background color of a line may | |
| 106 * be specified. | |
| 107 * </p><p> | |
| 108 * There are two ways to use this widget when specifying text style information. | |
| 109 * You may use the API that is defined for StyledText or you may define your own | |
| 110 * LineStyleListener. If you define your own listener, you will be responsible | |
| 111 * for maintaining the text style information for the widget. IMPORTANT: You may | |
| 112 * not define your own listener and use the StyledText API. The following | |
| 113 * StyledText API is not supported if you have defined a LineStyleListener: | |
| 114 * <ul> | |
| 115 * <li>getStyleRangeAtOffset(int) | |
| 116 * <li>getStyleRanges() | |
| 117 * <li>replaceStyleRanges(int,int,StyleRange[]) | |
| 118 * <li>setStyleRange(StyleRange) | |
| 119 * <li>setStyleRanges(StyleRange[]) | |
| 120 * </ul> | |
| 121 * </p><p> | |
| 122 * There are two ways to use this widget when specifying line background colors. | |
| 123 * You may use the API that is defined for StyledText or you may define your own | |
| 124 * LineBackgroundListener. If you define your own listener, you will be responsible | |
| 125 * for maintaining the line background color information for the widget. | |
| 126 * IMPORTANT: You may not define your own listener and use the StyledText API. | |
| 127 * The following StyledText API is not supported if you have defined a | |
| 128 * LineBackgroundListener: | |
| 129 * <ul> | |
| 130 * <li>getLineBackground(int) | |
| 131 * <li>setLineBackground(int,int,Color) | |
| 132 * </ul> | |
| 133 * </p><p> | |
| 134 * The content implementation for this widget may also be user-defined. To do so, | |
| 135 * you must implement the StyledTextContent interface and use the StyledText API | |
| 136 * setContent(StyledTextContent) to initialize the widget. | |
| 137 * </p><p> | |
| 138 * <dl> | |
| 139 * <dt><b>Styles:</b><dd>FULL_SELECTION, MULTI, READ_ONLY, SINGLE, WRAP | |
| 140 * <dt><b>Events:</b><dd>ExtendedModify, LineGetBackground, LineGetSegments, LineGetStyle, Modify, Selection, Verify, VerifyKey | |
| 141 * </dl> | |
| 142 * </p><p> | |
| 143 * IMPORTANT: This class is <em>not</em> intended to be subclassed. | |
| 144 * </p> | |
| 145 * | |
| 146 * @see <a href="http://www.eclipse.org/swt/snippets/#styledtext">StyledText snippets</a> | |
| 147 * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Examples: CustomControlExample, TextEditor</a> | |
| 148 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
| 149 */ | |
| 150 public class StyledText : Canvas { | |
| 151 alias Canvas.computeSize computeSize; | |
| 152 | |
| 153 static const char TAB = '\t'; | |
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154 version(Tango){ |
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155 static const String PlatformLineDelimiter = tango.io.model.IFile.FileConst.NewlineString; |
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156 } else { // Phobos |
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157 static const String PlatformLineDelimiter = std.string.newline; |
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158 } |
| 25 | 159 static const int BIDI_CARET_WIDTH = 3; |
| 160 static const int DEFAULT_WIDTH = 64; | |
| 161 static const int DEFAULT_HEIGHT = 64; | |
| 162 static const int V_SCROLL_RATE = 50; | |
| 163 static const int H_SCROLL_RATE = 10; | |
| 164 | |
| 165 static const int ExtendedModify = 3000; | |
| 166 static const int LineGetBackground = 3001; | |
| 167 static const int LineGetStyle = 3002; | |
| 168 static const int TextChanging = 3003; | |
| 169 static const int TextSet = 3004; | |
| 170 static const int VerifyKey = 3005; | |
| 171 static const int TextChanged = 3006; | |
| 172 static const int LineGetSegments = 3007; | |
| 173 static const int PaintObject = 3008; | |
| 174 static const int WordNext = 3009; | |
| 175 static const int WordPrevious = 3010; | |
| 176 | |
| 177 static const int PREVIOUS_OFFSET_TRAILING = 0; | |
| 178 static const int OFFSET_LEADING = 1; | |
| 179 | |
| 180 Color selectionBackground; // selection background color | |
| 181 Color selectionForeground; // selection foreground color | |
| 182 StyledTextContent content; // native content (default or user specified) | |
| 183 StyledTextRenderer renderer; | |
| 184 Listener listener; | |
| 185 TextChangeListener textChangeListener; // listener for TextChanging, TextChanged and TextSet events from StyledTextContent | |
| 186 int verticalScrollOffset = 0; // pixel based | |
| 187 int horizontalScrollOffset = 0; // pixel based | |
| 188 int topIndex = 0; // top visible line | |
| 189 int topIndexY; | |
| 190 int clientAreaHeight = 0; // the client area height. Needed to calculate content width for new visible lines during Resize callback | |
| 191 int clientAreaWidth = 0; // the client area width. Needed during Resize callback to determine if line wrap needs to be recalculated | |
| 192 int tabLength = 4; // number of characters in a tab | |
| 193 int leftMargin; | |
| 194 int topMargin; | |
| 195 int rightMargin; | |
| 196 int bottomMargin; | |
| 197 int columnX; // keep track of the horizontal caret position when changing lines/pages. Fixes bug 5935 | |
| 198 int caretOffset = 0; | |
| 199 int caretAlignment; | |
| 200 Point selection; // x and y are start and end caret offsets of selection | |
| 201 Point clipboardSelection; // x and y are start and end caret offsets of previous selection | |
| 202 int selectionAnchor; // position of selection anchor. 0 based offset from beginning of text | |
| 203 Point doubleClickSelection; // selection after last mouse double click | |
| 204 bool editable = true; | |
| 205 bool wordWrap = false; | |
| 206 bool doubleClickEnabled = true; // see getDoubleClickEnabled | |
| 207 bool overwrite = false; // insert/overwrite edit mode | |
| 208 int textLimit = -1; // limits the number of characters the user can type in the widget. Unlimited by default. | |
| 209 int[int] keyActionMap; | |
| 210 Color background = null; // workaround for bug 4791 | |
| 211 Color foreground = null; // | |
| 212 Clipboard clipboard; | |
| 213 int clickCount; | |
| 214 int autoScrollDirection = SWT.NULL; // the direction of autoscrolling (up, down, right, left) | |
| 215 int autoScrollDistance = 0; | |
| 216 int lastTextChangeStart; // cache data of the | |
| 217 int lastTextChangeNewLineCount; // last text changing | |
| 218 int lastTextChangeNewCharCount; // event for use in the | |
| 219 int lastTextChangeReplaceLineCount; // text changed handler | |
| 220 int lastTextChangeReplaceCharCount; | |
| 221 int lastLineBottom; // the bottom pixel of the last line been replaced | |
| 222 bool isMirrored_; | |
| 223 bool bidiColoring = false; // apply the BIDI algorithm on text segments of the same color | |
| 224 Image leftCaretBitmap = null; | |
| 225 Image rightCaretBitmap = null; | |
| 226 int caretDirection = SWT.NULL; | |
| 227 int caretWidth = 0; | |
| 228 Caret defaultCaret = null; | |
| 229 bool updateCaretDirection = true; | |
| 230 bool fixedLineHeight; | |
| 231 bool dragDetect_ = true; | |
| 232 IME ime; | |
| 233 | |
| 234 int alignment; | |
| 235 bool justify; | |
| 236 int indent; | |
| 237 int lineSpacing; | |
| 238 | |
| 239 const static bool IS_CARBON, IS_GTK, IS_MOTIF; | |
| 240 static this(){ | |
| 241 String platform = SWT.getPlatform(); | |
| 242 IS_CARBON = ("carbon" == platform); | |
| 243 IS_GTK = ("gtk" == platform); | |
| 244 IS_MOTIF = ("motif" == platform); | |
| 245 } | |
| 246 | |
| 247 /** | |
| 248 * The Printing class : printing of a range of text. | |
| 249 * An instance of <code>Printing</code> is returned in the | |
| 250 * StyledText#print(Printer) API. The run() method may be | |
| 251 * invoked from any thread. | |
| 252 */ | |
| 253 static class Printing : Runnable { | |
| 254 const static int LEFT = 0; // left aligned header/footer segment | |
| 255 const static int CENTER = 1; // centered header/footer segment | |
| 256 const static int RIGHT = 2; // right aligned header/footer segment | |
| 257 | |
| 258 Printer printer; | |
| 259 StyledTextRenderer printerRenderer; | |
| 260 StyledTextPrintOptions printOptions; | |
| 261 Rectangle clientArea; | |
| 262 FontData fontData; | |
| 263 Font printerFont; | |
| 264 Resource[Resource] resources; | |
| 265 int tabLength; | |
| 266 GC gc; // printer GC | |
| 267 int pageWidth; // width of a printer page in pixels | |
| 268 int startPage; // first page to print | |
| 269 int endPage; // last page to print | |
| 270 int startLine; // first (wrapped) line to print | |
| 271 int endLine; // last (wrapped) line to print | |
| 272 bool singleLine; // widget single line mode | |
| 273 Point selection = null; // selected text | |
| 274 bool mirrored; // indicates the printing gc should be mirrored | |
| 275 int lineSpacing; | |
| 276 int printMargin; | |
| 277 | |
| 278 /** | |
| 279 * Creates an instance of <code>Printing</code>. | |
| 280 * Copies the widget content and rendering data that needs | |
| 281 * to be requested from listeners. | |
| 282 * </p> | |
| 283 * @param parent StyledText widget to print. | |
| 284 * @param printer printer device to print on. | |
| 285 * @param printOptions print options | |
| 286 */ | |
| 287 this(StyledText styledText, Printer printer, StyledTextPrintOptions printOptions) { | |
| 288 this.printer = printer; | |
| 289 this.printOptions = printOptions; | |
| 290 this.mirrored = (styledText.getStyle() & SWT.MIRRORED) !is 0; | |
| 291 singleLine = styledText.isSingleLine(); | |
| 292 startPage = 1; | |
| 293 endPage = int.max; | |
| 294 PrinterData data = printer.getPrinterData(); | |
| 295 if (data.scope_ is PrinterData.PAGE_RANGE) { | |
| 296 startPage = data.startPage; | |
| 297 endPage = data.endPage; | |
| 298 if (endPage < startPage) { | |
| 299 int temp = endPage; | |
| 300 endPage = startPage; | |
| 301 startPage = temp; | |
| 302 } | |
| 303 } else if (data.scope_ is PrinterData.SELECTION) { | |
| 304 selection = styledText.getSelectionRange(); | |
| 305 } | |
| 306 printerRenderer = new StyledTextRenderer(printer, null); | |
| 307 printerRenderer.setContent(copyContent(styledText.getContent())); | |
| 308 cacheLineData(styledText); | |
| 309 } | |
| 310 /** | |
| 311 * Caches all line data that needs to be requested from a listener. | |
| 312 * </p> | |
| 313 * @param printerContent <code>StyledTextContent</code> to request | |
| 314 * line data for. | |
| 315 */ | |
| 316 void cacheLineData(StyledText styledText) { | |
| 317 StyledTextRenderer renderer = styledText.renderer; | |
| 318 renderer.copyInto(printerRenderer); | |
| 319 fontData = styledText.getFont().getFontData()[0]; | |
| 320 tabLength = styledText.tabLength; | |
| 321 int lineCount = printerRenderer.lineCount; | |
| 322 if (styledText.isListening(LineGetBackground) || (styledText.isBidi() && styledText.isListening(LineGetSegments)) || styledText.isListening(LineGetStyle)) { | |
| 323 StyledTextContent content = printerRenderer.content; | |
| 324 for (int i = 0; i < lineCount; i++) { | |
| 325 String line = content.getLine(i); | |
| 326 int lineOffset = content.getOffsetAtLine(i); | |
| 327 StyledTextEvent event = styledText.getLineBackgroundData(lineOffset, line); | |
| 328 if (event !is null && event.lineBackground !is null) { | |
| 329 printerRenderer.setLineBackground(i, 1, event.lineBackground); | |
| 330 } | |
| 331 if (styledText.isBidi()) { | |
| 332 int[] segments = styledText.getBidiSegments(lineOffset, line); | |
| 333 printerRenderer.setLineSegments(i, 1, segments); | |
| 334 } | |
| 335 event = styledText.getLineStyleData(lineOffset, line); | |
| 336 if (event !is null) { | |
| 337 printerRenderer.setLineIndent(i, 1, event.indent); | |
| 338 printerRenderer.setLineAlignment(i, 1, event.alignment); | |
| 339 printerRenderer.setLineJustify(i, 1, event.justify); | |
| 340 printerRenderer.setLineBullet(i, 1, event.bullet); | |
| 341 StyleRange[] styles = event.styles; | |
| 342 if (styles !is null && styles.length > 0) { | |
| 343 printerRenderer.setStyleRanges(event.ranges, styles); | |
| 344 } | |
| 345 } | |
| 346 } | |
| 347 } | |
| 348 Point screenDPI = styledText.getDisplay().getDPI(); | |
| 349 Point printerDPI = printer.getDPI(); | |
| 350 resources = null; | |
| 351 for (int i = 0; i < lineCount; i++) { | |
| 352 Color color = printerRenderer.getLineBackground(i, null); | |
| 353 if (color !is null) { | |
| 354 if (printOptions.printLineBackground) { | |
| 355 Color printerColor; | |
| 356 if ( auto p = color in resources ) { | |
| 357 printerColor = cast(Color)*p; | |
| 358 } | |
| 359 else { | |
| 360 printerColor = new Color (printer, color.getRGB()); | |
| 361 resources[color]=printerColor; | |
| 362 } | |
| 363 printerRenderer.setLineBackground(i, 1, printerColor); | |
| 364 } else { | |
| 365 printerRenderer.setLineBackground(i, 1, null); | |
| 366 } | |
| 367 } | |
| 368 int indent = printerRenderer.getLineIndent(i, 0); | |
| 369 if (indent !is 0) { | |
| 370 printerRenderer.setLineIndent(i, 1, indent * printerDPI.x / screenDPI.x); | |
| 371 } | |
| 372 } | |
| 373 StyleRange[] styles = printerRenderer.styles; | |
| 374 for (int i = 0; i < printerRenderer.styleCount; i++) { | |
| 375 StyleRange style = styles[i]; | |
| 376 Font font = style.font; | |
| 377 if (style.font !is null) { | |
| 378 Font printerFont; | |
| 379 if ( auto p = font in resources ) { | |
| 380 printerFont = cast(Font)*p; | |
| 381 } | |
| 382 else { | |
| 383 printerFont = new Font (printer, font.getFontData()); | |
| 384 resources[font]= printerFont; | |
| 385 } | |
| 386 style.font = printerFont; | |
| 387 } | |
| 388 Color color = style.foreground; | |
| 389 if (color !is null) { | |
| 390 if (printOptions.printTextForeground) { | |
| 391 Color printerColor; | |
| 392 if ( auto p = color in resources ) { | |
| 393 printerColor = cast(Color)*p; | |
| 394 } | |
| 395 else { | |
| 396 printerColor = new Color (printer, color.getRGB()); | |
| 397 resources[color]=printerColor; | |
| 398 } | |
| 399 style.foreground = printerColor; | |
| 400 } else { | |
| 401 style.foreground = null; | |
| 402 } | |
| 403 } | |
| 404 color = style.background; | |
| 405 if (color !is null) { | |
| 406 if (printOptions.printTextBackground) { | |
| 407 Color printerColor; | |
| 408 if ( auto p = color in resources ) { | |
| 409 printerColor = cast(Color)*p; | |
| 410 } | |
| 411 else { | |
| 412 printerColor = new Color (printer, color.getRGB()); | |
| 413 resources[color]=printerColor; | |
| 414 } | |
| 415 style.background = printerColor; | |
| 416 } else { | |
| 417 style.background = null; | |
| 418 } | |
| 419 } | |
| 420 if (!printOptions.printTextFontStyle) { | |
| 421 style.fontStyle = SWT.NORMAL; | |
| 422 } | |
| 423 style.rise = style.rise * printerDPI.y / screenDPI.y; | |
| 424 GlyphMetrics metrics = style.metrics; | |
| 425 if (metrics !is null) { | |
| 426 metrics.ascent = metrics.ascent * printerDPI.y / screenDPI.y; | |
| 427 metrics.descent = metrics.descent * printerDPI.y / screenDPI.y; | |
| 428 metrics.width = metrics.width * printerDPI.x / screenDPI.x; | |
| 429 } | |
| 430 } | |
| 431 lineSpacing = styledText.lineSpacing * printerDPI.y / screenDPI.y; | |
| 432 if (printOptions.printLineNumbers) { | |
| 433 printMargin = 3 * printerDPI.x / screenDPI.x; | |
| 434 } | |
| 435 } | |
| 436 /** | |
| 437 * Copies the text of the specified <code>StyledTextContent</code>. | |
| 438 * </p> | |
| 439 * @param original the <code>StyledTextContent</code> to copy. | |
| 440 */ | |
| 441 StyledTextContent copyContent(StyledTextContent original) { | |
| 442 StyledTextContent printerContent = new DefaultContent(); | |
| 443 int insertOffset = 0; | |
| 444 for (int i = 0; i < original.getLineCount(); i++) { | |
| 445 int insertEndOffset; | |
| 446 if (i < original.getLineCount() - 1) { | |
| 447 insertEndOffset = original.getOffsetAtLine(i + 1); | |
| 448 } else { | |
| 449 insertEndOffset = original.getCharCount(); | |
| 450 } | |
| 451 printerContent.replaceTextRange(insertOffset, 0, original.getTextRange(insertOffset, insertEndOffset - insertOffset)); | |
| 452 insertOffset = insertEndOffset; | |
| 453 } | |
| 454 return printerContent; | |
| 455 } | |
| 456 /** | |
| 457 * Disposes of the resources and the <code>PrintRenderer</code>. | |
| 458 */ | |
| 459 void dispose() { | |
| 460 if (gc !is null) { | |
| 461 gc.dispose(); | |
| 462 gc = null; | |
| 463 } | |
| 464 foreach( resource; resources.values ){ | |
| 465 resource.dispose(); | |
| 466 } | |
| 467 resources = null; | |
| 468 if (printerFont !is null) { | |
| 469 printerFont.dispose(); | |
| 470 printerFont = null; | |
| 471 } | |
| 472 if (printerRenderer !is null) { | |
| 473 printerRenderer.dispose(); | |
| 474 printerRenderer = null; | |
| 475 } | |
| 476 } | |
| 477 void init_() { | |
| 478 Rectangle trim = printer.computeTrim(0, 0, 0, 0); | |
| 479 Point dpi = printer.getDPI(); | |
| 480 | |
| 481 printerFont = new Font( cast(Device)printer, fontData.getName(), fontData.getHeight(), SWT.NORMAL); | |
| 482 clientArea = printer.getClientArea(); | |
| 483 pageWidth = clientArea.width; | |
| 484 // one inch margin around text | |
| 485 clientArea.x = dpi.x + trim.x; | |
| 486 clientArea.y = dpi.y + trim.y; | |
| 487 clientArea.width -= (clientArea.x + trim.width); | |
| 488 clientArea.height -= (clientArea.y + trim.height); | |
| 489 | |
| 490 int style = mirrored ? SWT.RIGHT_TO_LEFT : SWT.LEFT_TO_RIGHT; | |
| 491 gc = new GC(printer, style); | |
| 492 gc.setFont(printerFont); | |
| 493 printerRenderer.setFont(printerFont, tabLength); | |
| 494 int lineHeight = printerRenderer.getLineHeight(); | |
| 495 if (printOptions.header !is null) { | |
| 496 clientArea.y += lineHeight * 2; | |
| 497 clientArea.height -= lineHeight * 2; | |
| 498 } | |
| 499 if (printOptions.footer !is null) { | |
| 500 clientArea.height -= lineHeight * 2; | |
| 501 } | |
| 502 | |
| 503 // TODO not wrapped | |
| 504 StyledTextContent content = printerRenderer.content; | |
| 505 startLine = 0; | |
| 506 endLine = singleLine ? 0 : content.getLineCount() - 1; | |
| 507 PrinterData data = printer.getPrinterData(); | |
| 508 if (data.scope_ is PrinterData.PAGE_RANGE) { | |
| 509 int pageSize = clientArea.height / lineHeight;//WRONG | |
| 510 startLine = (startPage - 1) * pageSize; | |
| 511 } else if (data.scope_ is PrinterData.SELECTION) { | |
| 512 startLine = content.getLineAtOffset(selection.x); | |
| 513 if (selection.y > 0) { | |
| 514 endLine = content.getLineAtOffset(selection.x + selection.y - 1); | |
| 515 } else { | |
| 516 endLine = startLine - 1; | |
| 517 } | |
| 518 } | |
| 519 } | |
| 520 /** | |
| 521 * Prints the lines in the specified page range. | |
| 522 */ | |
| 523 void print() { | |
| 524 Color background = gc.getBackground(); | |
| 525 Color foreground = gc.getForeground(); | |
| 526 int paintY = clientArea.y; | |
| 527 int paintX = clientArea.x; | |
| 528 int width = clientArea.width; | |
| 529 int page = startPage; | |
| 530 int pageBottom = clientArea.y + clientArea.height; | |
| 531 int orientation = gc.getStyle() & (SWT.RIGHT_TO_LEFT | SWT.LEFT_TO_RIGHT); | |
| 532 TextLayout printLayout = null; | |
| 533 if (printOptions.printLineNumbers || printOptions.header !is null || printOptions.footer !is null) { | |
| 534 printLayout = new TextLayout(printer); | |
| 535 printLayout.setFont(printerFont); | |
| 536 } | |
| 537 if (printOptions.printLineNumbers) { | |
| 538 int numberingWidth = 0; | |
| 539 int count = endLine - startLine + 1; | |
| 540 String[] lineLabels = printOptions.lineLabels; | |
| 541 if (lineLabels !is null) { | |
| 542 for (int i = startLine; i < Math.min(count, lineLabels.length); i++) { | |
| 543 if (lineLabels[i] !is null) { | |
| 544 printLayout.setText(lineLabels[i]); | |
| 545 int lineWidth = printLayout.getBounds().width; | |
| 546 numberingWidth = Math.max(numberingWidth, lineWidth); | |
| 547 } | |
| 548 } | |
| 549 } else { | |
| 550 StringBuffer buffer = new StringBuffer("0"); | |
| 551 while ((count /= 10) > 0) buffer.append("0"); | |
| 552 printLayout.setText(buffer.toString()); | |
| 553 numberingWidth = printLayout.getBounds().width; | |
| 554 } | |
| 555 numberingWidth += printMargin; | |
| 556 if (numberingWidth > width) numberingWidth = width; | |
| 557 paintX += numberingWidth; | |
| 558 width -= numberingWidth; | |
| 559 } | |
| 560 for (int i = startLine; i <= endLine && page <= endPage; i++) { | |
| 561 if (paintY is clientArea.y) { | |
| 562 printer.startPage(); | |
| 563 printDecoration(page, true, printLayout); | |
| 564 } | |
| 565 TextLayout layout = printerRenderer.getTextLayout(i, orientation, width, lineSpacing); | |
| 566 Color lineBackground = printerRenderer.getLineBackground(i, background); | |
| 567 int paragraphBottom = paintY + layout.getBounds().height; | |
| 568 if (paragraphBottom <= pageBottom) { | |
| 569 //normal case, the whole paragraph fits in the current page | |
| 570 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); | |
| 571 paintY = paragraphBottom; | |
| 572 } else { | |
| 573 int lineCount = layout.getLineCount(); | |
| 574 while (paragraphBottom > pageBottom && lineCount > 0) { | |
| 575 lineCount--; | |
| 576 paragraphBottom -= layout.getLineBounds(lineCount).height + layout.getSpacing(); | |
| 577 } | |
| 578 if (lineCount is 0) { | |
| 579 //the whole paragraph goes to the next page | |
| 580 printDecoration(page, false, printLayout); | |
| 581 printer.endPage(); | |
| 582 page++; | |
| 583 if (page <= endPage) { | |
| 584 printer.startPage(); | |
| 585 printDecoration(page, true, printLayout); | |
| 586 paintY = clientArea.y; | |
| 587 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); | |
| 588 paintY += layout.getBounds().height; | |
| 589 } | |
| 590 } else { | |
| 591 //draw paragraph top in the current page and paragraph bottom in the next | |
| 592 int height = paragraphBottom - paintY; | |
| 593 gc.setClipping(clientArea.x, paintY, clientArea.width, height); | |
| 594 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); | |
| 595 gc.setClipping(cast(Rectangle)null); | |
| 596 printDecoration(page, false, printLayout); | |
| 597 printer.endPage(); | |
| 598 page++; | |
| 599 if (page <= endPage) { | |
| 600 printer.startPage(); | |
| 601 printDecoration(page, true, printLayout); | |
| 602 paintY = clientArea.y - height; | |
| 603 int layoutHeight = layout.getBounds().height; | |
| 604 gc.setClipping(clientArea.x, clientArea.y, clientArea.width, layoutHeight - height); | |
| 605 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); | |
| 606 gc.setClipping(cast(Rectangle)null); | |
| 607 paintY += layoutHeight; | |
| 608 } | |
| 609 } | |
| 610 } | |
| 611 printerRenderer.disposeTextLayout(layout); | |
| 612 } | |
| 613 if (page <= endPage && paintY > clientArea.y) { | |
| 614 // close partial page | |
| 615 printDecoration(page, false, printLayout); | |
| 616 printer.endPage(); | |
| 617 } | |
| 618 if (printLayout !is null) printLayout.dispose(); | |
| 619 } | |
| 620 /** | |
| 621 * Print header or footer decorations. | |
| 622 * | |
| 623 * @param page page number to print, if specified in the StyledTextPrintOptions header or footer. | |
| 624 * @param header true = print the header, false = print the footer | |
| 625 */ | |
| 626 void printDecoration(int page, bool header, TextLayout layout) { | |
| 627 String text = header ? printOptions.header : printOptions.footer; | |
| 628 if (text is null) return; | |
| 629 int lastSegmentIndex = 0; | |
| 630 for (int i = 0; i < 3; i++) { | |
| 631 int segmentIndex = text.indexOf( StyledTextPrintOptions.SEPARATOR, lastSegmentIndex); | |
| 632 String segment; | |
| 633 if (segmentIndex is -1 ) { | |
| 634 segment = text.substring(lastSegmentIndex); | |
| 635 printDecorationSegment(segment, i, page, header, layout); | |
| 636 break; | |
| 637 } else { | |
| 638 segment = text.substring(lastSegmentIndex, segmentIndex); | |
| 639 printDecorationSegment(segment, i, page, header, layout); | |
| 640 lastSegmentIndex = segmentIndex + StyledTextPrintOptions.SEPARATOR.length; | |
| 641 } | |
| 642 } | |
| 643 } | |
| 644 /** | |
| 645 * Print one segment of a header or footer decoration. | |
| 646 * Headers and footers have three different segments. | |
| 647 * One each for left aligned, centered, and right aligned text. | |
| 648 * | |
| 649 * @param segment decoration segment to print | |
| 650 * @param alignment alignment of the segment. 0=left, 1=center, 2=right | |
| 651 * @param page page number to print, if specified in the decoration segment. | |
| 652 * @param header true = print the header, false = print the footer | |
| 653 */ | |
| 654 void printDecorationSegment(String segment, int alignment, int page, bool header, TextLayout layout) { | |
| 655 int pageIndex = segment.indexOf(StyledTextPrintOptions.PAGE_TAG); | |
| 656 if (pageIndex !is -1 ) { | |
| 657 int pageTagLength = StyledTextPrintOptions.PAGE_TAG.length; | |
| 658 StringBuffer buffer = new StringBuffer(segment.substring (0, pageIndex)); | |
| 659 buffer.append (page); | |
| 660 buffer.append (segment.substring(pageIndex + pageTagLength)); | |
| 661 segment = buffer.toString().dup; | |
| 662 } | |
| 663 if (segment.length > 0) { | |
| 664 layout.setText(segment); | |
| 665 int segmentWidth = layout.getBounds().width; | |
| 666 int segmentHeight = printerRenderer.getLineHeight(); | |
| 667 int drawX = 0, drawY; | |
| 668 if (alignment is LEFT) { | |
| 669 drawX = clientArea.x; | |
| 670 } else if (alignment is CENTER) { | |
| 671 drawX = (pageWidth - segmentWidth) / 2; | |
| 672 } else if (alignment is RIGHT) { | |
| 673 drawX = clientArea.x + clientArea.width - segmentWidth; | |
| 674 } | |
| 675 if (header) { | |
| 676 drawY = clientArea.y - segmentHeight * 2; | |
| 677 } else { | |
| 678 drawY = clientArea.y + clientArea.height + segmentHeight; | |
| 679 } | |
| 680 layout.draw(gc, drawX, drawY); | |
| 681 } | |
| 682 } | |
| 683 void printLine(int x, int y, GC gc, Color foreground, Color background, TextLayout layout, TextLayout printLayout, int index) { | |
| 684 if (background !is null) { | |
| 685 Rectangle rect = layout.getBounds(); | |
| 686 gc.setBackground(background); | |
| 687 gc.fillRectangle(x, y, rect.width, rect.height); | |
| 688 | |
| 689 // int lineCount = layout.getLineCount(); | |
| 690 // for (int i = 0; i < lineCount; i++) { | |
| 691 // Rectangle rect = layout.getLineBounds(i); | |
| 692 // rect.x += paintX; | |
| 693 // rect.y += paintY + layout.getSpacing(); | |
| 694 // rect.width = width;//layout bounds | |
| 695 // gc.fillRectangle(rect); | |
| 696 // } | |
| 697 } | |
| 698 if (printOptions.printLineNumbers) { | |
| 699 FontMetrics metrics = layout.getLineMetrics(0); | |
| 700 printLayout.setAscent(metrics.getAscent() + metrics.getLeading()); | |
| 701 printLayout.setDescent(metrics.getDescent()); | |
| 702 String[] lineLabels = printOptions.lineLabels; | |
| 703 if (lineLabels !is null) { | |
| 704 if (0 <= index && index < lineLabels.length && lineLabels[index] !is null) { | |
| 705 printLayout.setText(lineLabels[index]); | |
| 706 } else { | |
| 707 printLayout.setText(""); | |
| 708 } | |
| 709 } else { | |
| 710 printLayout.setText(to!(String)(index)); | |
| 711 } | |
| 712 int paintX = x - printMargin - printLayout.getBounds().width; | |
| 713 printLayout.draw(gc, paintX, y); | |
| 714 printLayout.setAscent(-1); | |
| 715 printLayout.setDescent(-1); | |
| 716 } | |
| 717 gc.setForeground(foreground); | |
| 718 layout.draw(gc, x, y); | |
| 719 } | |
| 720 /** | |
| 721 * Starts a print job and prints the pages specified in the constructor. | |
| 722 */ | |
| 723 public void run() { | |
| 724 String jobName = printOptions.jobName; | |
| 725 if (jobName is null) { | |
| 726 jobName = "Printing"; | |
| 727 } | |
| 728 if (printer.startJob(jobName)) { | |
| 729 init_(); | |
| 730 print(); | |
| 731 dispose(); | |
| 732 printer.endJob(); | |
| 733 } | |
| 734 } | |
| 735 } | |
| 736 /** | |
| 737 * The <code>RTFWriter</code> class is used to write widget content as | |
| 738 * rich text. The implementation complies with the RTF specification | |
| 739 * version 1.5. | |
| 740 * <p> | |
| 741 * toString() is guaranteed to return a valid RTF string only after | |
| 742 * close() has been called. | |
| 743 * </p><p> | |
| 744 * Whole and partial lines and line breaks can be written. Lines will be | |
| 745 * formatted using the styles queried from the LineStyleListener, if | |
| 746 * set, or those set directly in the widget. All styles are applied to | |
| 747 * the RTF stream like they are rendered by the widget. In addition, the | |
| 748 * widget font name and size is used for the whole text. | |
| 749 * </p> | |
| 750 */ | |
| 751 class RTFWriter : TextWriter { | |
| 752 | |
| 753 alias TextWriter.write write; | |
| 754 | |
| 755 static const int DEFAULT_FOREGROUND = 0; | |
| 756 static const int DEFAULT_BACKGROUND = 1; | |
| 757 Color[] colorTable; | |
| 758 Font[] fontTable; | |
| 759 bool WriteUnicode; | |
| 760 | |
| 761 /** | |
| 762 * Creates a RTF writer that writes content starting at offset "start" | |
| 763 * in the document. <code>start</code> and <code>length</code>can be set to specify partial | |
| 764 * lines. | |
| 765 * | |
| 766 * @param start start offset of content to write, 0 based from | |
| 767 * beginning of document | |
| 768 * @param length length of content to write | |
| 769 */ | |
| 770 public this(int start, int length) { | |
| 771 super(start, length); | |
| 772 colorTable ~= getForeground(); | |
| 773 colorTable ~= getBackground(); | |
| 774 fontTable ~= getFont(); | |
| 775 setUnicode(); | |
| 776 } | |
| 777 /** | |
| 778 * Closes the RTF writer. Once closed no more content can be written. | |
| 779 * <b>NOTE:</b> <code>toString()</code> does not return a valid RTF string until | |
| 780 * <code>close()</code> has been called. | |
| 781 */ | |
| 782 public override void close() { | |
| 783 if (!isClosed()) { | |
| 784 writeHeader(); | |
| 785 write("\n}}\0"); | |
| 786 super.close(); | |
| 787 } | |
| 788 } | |
| 789 /** | |
| 790 * Returns the index of the specified color in the RTF color table. | |
| 791 * | |
| 792 * @param color the color | |
| 793 * @param defaultIndex return value if color is null | |
| 794 * @return the index of the specified color in the RTF color table | |
| 795 * or "defaultIndex" if "color" is null. | |
| 796 */ | |
| 797 int getColorIndex(Color color, int defaultIndex) { | |
| 798 if (color is null) return defaultIndex; | |
| 799 int index = -1; | |
| 800 foreach( i, col; colorTable ){ | |
| 801 if( col == color ){ | |
| 802 index = i; | |
| 803 break; | |
| 804 } | |
| 805 } | |
| 806 if (index is -1) { | |
| 807 index = colorTable.length; | |
| 808 colorTable ~= color; | |
| 809 } | |
| 810 return index; | |
| 811 } | |
| 812 /** | |
| 813 * Returns the index of the specified color in the RTF color table. | |
| 814 * | |
| 815 * @param color the color | |
| 816 * @param defaultIndex return value if color is null | |
| 817 * @return the index of the specified color in the RTF color table | |
| 818 * or "defaultIndex" if "color" is null. | |
| 819 */ | |
| 820 int getFontIndex(Font font) { | |
| 821 int index = -1; | |
| 822 foreach( i, f; colorTable ){ | |
| 823 if( f == font ){ | |
| 824 index = i; | |
| 825 break; | |
| 826 } | |
| 827 } | |
| 828 if (index is -1) { | |
| 829 index = fontTable.length; | |
| 830 fontTable ~= font; | |
| 831 } | |
| 832 return index; | |
| 833 } | |
| 834 /** | |
| 835 * Determines if Unicode RTF should be written. | |
| 836 * Don't write Unicode RTF on Windows 95/98/ME or NT. | |
| 837 */ | |
| 838 void setUnicode() { | |
| 839 // const String Win95 = "windows 95"; | |
| 840 // const String Win98 = "windows 98"; | |
| 841 // const String WinME = "windows me"; | |
| 842 // const String WinNT = "windows nt"; | |
| 843 // String osName = System.getProperty("os.name").toLowerCase(); | |
| 844 // String osVersion = System.getProperty("os.version"); | |
| 845 // int majorVersion = 0; | |
| 846 // | |
| 847 // if (osName.startsWith(WinNT) && osVersion !is null) { | |
| 848 // int majorIndex = osVersion.indexOf('.'); | |
| 849 // if (majorIndex !is -1) { | |
| 850 // osVersion = osVersion.substring(0, majorIndex); | |
| 851 // try { | |
| 852 // majorVersion = Integer.parseInt(osVersion); | |
| 853 // } catch (NumberFormatException exception) { | |
| 854 // // ignore exception. version number remains unknown. | |
| 855 // // will write without Unicode | |
| 856 // } | |
| 857 // } | |
| 858 // } | |
| 859 // WriteUnicode = !osName.startsWith(Win95) && | |
| 860 // !osName.startsWith(Win98) && | |
| 861 // !osName.startsWith(WinME) && | |
| 862 // (!osName.startsWith(WinNT) || majorVersion > 4); | |
| 863 WriteUnicode = true; // we are on linux-gtk | |
| 864 } | |
| 865 /** | |
| 866 * Appends the specified segment of "string" to the RTF data. | |
| 867 * Copy from <code>start</code> up to, but excluding, <code>end</code>. | |
| 868 * | |
| 869 * @param string string to copy a segment from. Must not contain | |
| 870 * line breaks. Line breaks should be written using writeLineDelimiter() | |
| 871 * @param start start offset of segment. 0 based. | |
| 872 * @param end end offset of segment | |
| 873 */ | |
| 874 void write(String string, int start, int end) { | |
| 875 start = 0; | |
| 876 end = string.length; | |
| 877 int incr = 1; | |
| 878 for (int index = start; index < end; index+=incr) { | |
| 879 dchar ch = firstCodePoint( string[index .. $], incr ); | |
| 880 if (ch > 0xFF && WriteUnicode) { | |
| 881 // write the sub string from the last escaped character | |
| 882 // to the current one. Fixes bug 21698. | |
| 883 if (index > start) { | |
| 884 write( string[start .. index ] ); | |
| 885 } | |
| 886 write("\\u"); | |
| 887 write( to!(String)( cast(short)ch )); | |
| 888 write(' '); // control word delimiter | |
| 889 start = index + incr; | |
| 890 } else if (ch is '}' || ch is '{' || ch is '\\') { | |
| 891 // write the sub string from the last escaped character | |
| 892 // to the current one. Fixes bug 21698. | |
| 893 if (index > start) { | |
| 894 write(string[start .. index]); | |
| 895 } | |
| 896 write('\\'); | |
| 897 write(cast(char)ch); // ok because one of {}\ | |
| 898 start = index + 1; | |
| 899 } | |
| 900 } | |
| 901 // write from the last escaped character to the end. | |
| 902 // Fixes bug 21698. | |
| 903 if (start < end) { | |
| 904 write(string[ start .. end]); | |
| 905 } | |
| 906 } | |
| 907 /** | |
| 908 * Writes the RTF header including font table and color table. | |
| 909 */ | |
| 910 void writeHeader() { | |
| 911 StringBuffer header = new StringBuffer(); | |
| 912 FontData fontData = getFont().getFontData()[0]; | |
| 913 header.append("{\\rtf1\\ansi"); | |
| 914 // specify code page, necessary for copy to work in bidi | |
| 915 // systems that don't support Unicode RTF. | |
| 916 // PORTING_TODO: String cpg = System.getProperty("file.encoding").toLowerCase(); | |
| 917 String cpg = "UTF16"; | |
| 918 /+ | |
| 919 if (cpg.startsWith("cp") || cpg.startsWith("ms")) { | |
| 920 cpg = cpg.substring(2, cpg.length()); | |
| 921 header.append("\\ansicpg"); | |
| 922 header.append(cpg); | |
| 923 } | |
| 924 +/ | |
| 925 header.append("\\uc0\\deff0{\\fonttbl{\\f0\\fnil "); | |
| 926 header.append(fontData.getName()); | |
| 927 header.append(";"); | |
| 928 for (int i = 1; i < fontTable.length; i++) { | |
| 929 header.append("\\f"); | |
| 930 header.append(i); | |
| 931 header.append(" "); | |
| 932 FontData fd = (cast(Font)fontTable[i]).getFontData()[0]; | |
| 933 header.append(fd.getName()); | |
| 934 header.append(";"); | |
| 935 } | |
| 936 header.append("}}\n{\\colortbl"); | |
| 937 for (int i = 0; i < colorTable.length; i++) { | |
| 938 Color color = cast(Color) colorTable[i]; | |
| 939 header.append("\\red"); | |
| 940 header.append(color.getRed()); | |
| 941 header.append("\\green"); | |
| 942 header.append(color.getGreen()); | |
| 943 header.append("\\blue"); | |
| 944 header.append(color.getBlue()); | |
| 945 header.append(";"); | |
| 946 } | |
| 947 // some RTF readers ignore the deff0 font tag. Explicitly | |
| 948 // set the font for the whole document to work around this. | |
| 949 header.append("}\n{\\f0\\fs"); | |
| 950 // font size is specified in half points | |
| 951 header.append(fontData.getHeight() * 2); | |
| 952 header.append(" "); | |
| 953 write(header.toString(), 0); | |
| 954 } | |
| 955 /** | |
| 956 * Appends the specified line text to the RTF data. Lines will be formatted | |
| 957 * using the styles queried from the LineStyleListener, if set, or those set | |
| 958 * directly in the widget. | |
| 959 * | |
| 960 * @param line line text to write as RTF. Must not contain line breaks | |
| 961 * Line breaks should be written using writeLineDelimiter() | |
| 962 * @param lineOffset offset of the line. 0 based from the start of the | |
| 963 * widget document. Any text occurring before the start offset or after the | |
| 964 * end offset specified during object creation is ignored. | |
| 965 * @exception SWTException <ul> | |
| 966 * <li>ERROR_IO when the writer is closed.</li> | |
| 967 * </ul> | |
| 968 */ | |
| 969 public override void writeLine(String line, int lineOffset) { | |
| 970 if (isClosed()) { | |
| 971 SWT.error(SWT.ERROR_IO); | |
| 972 } | |
| 973 int lineIndex = content.getLineAtOffset(lineOffset); | |
| 974 int lineAlignment, lineIndent; | |
| 975 bool lineJustify; | |
| 976 int[] ranges; | |
| 977 StyleRange[] styles; | |
| 978 StyledTextEvent event = getLineStyleData(lineOffset, line); | |
| 979 if (event !is null) { | |
| 980 lineAlignment = event.alignment; | |
| 981 lineIndent = event.indent; | |
| 982 lineJustify = event.justify; | |
| 983 ranges = event.ranges; | |
| 984 styles = event.styles; | |
| 985 } else { | |
| 986 lineAlignment = renderer.getLineAlignment(lineIndex, alignment); | |
| 987 lineIndent = renderer.getLineIndent(lineIndex, indent); | |
| 988 lineJustify = renderer.getLineJustify(lineIndex, justify); | |
| 989 ranges = renderer.getRanges(lineOffset, line.length); | |
| 990 styles = renderer.getStyleRanges(lineOffset, line.length, false); | |
| 991 } | |
| 992 if (styles is null) styles = new StyleRange[0]; | |
| 993 Color lineBackground = renderer.getLineBackground(lineIndex, null); | |
| 994 event = getLineBackgroundData(lineOffset, line); | |
| 995 if (event !is null && event.lineBackground !is null) lineBackground = event.lineBackground; | |
| 996 writeStyledLine(line, lineOffset, ranges, styles, lineBackground, lineIndent, lineAlignment, lineJustify); | |
| 997 } | |
| 998 /** | |
| 999 * Appends the specified line delimiter to the RTF data. | |
| 1000 * | |
| 1001 * @param lineDelimiter line delimiter to write as RTF. | |
| 1002 * @exception SWTException <ul> | |
| 1003 * <li>ERROR_IO when the writer is closed.</li> | |
| 1004 * </ul> | |
| 1005 */ | |
| 1006 public override void writeLineDelimiter(String lineDelimiter) { | |
| 1007 if (isClosed()) { | |
| 1008 SWT.error(SWT.ERROR_IO); | |
| 1009 } | |
| 1010 write(lineDelimiter, 0, lineDelimiter.length); | |
| 1011 write("\\par "); | |
| 1012 } | |
| 1013 /** | |
| 1014 * Appends the specified line text to the RTF data. | |
| 1015 * <p> | |
| 1016 * Use the colors and font styles specified in "styles" and "lineBackground". | |
| 1017 * Formatting is written to reflect the text rendering by the text widget. | |
| 1018 * Style background colors take precedence over the line background color. | |
| 1019 * Background colors are written using the \highlight tag (vs. the \cb tag). | |
| 1020 * </p> | |
| 1021 * | |
| 1022 * @param line line text to write as RTF. Must not contain line breaks | |
| 1023 * Line breaks should be written using writeLineDelimiter() | |
| 1024 * @param lineOffset offset of the line. 0 based from the start of the | |
| 1025 * widget document. Any text occurring before the start offset or after the | |
| 1026 * end offset specified during object creation is ignored. | |
| 1027 * @param styles styles to use for formatting. Must not be null. | |
| 1028 * @param lineBackground line background color to use for formatting. | |
| 1029 * May be null. | |
| 1030 */ | |
| 1031 void writeStyledLine(String line, int lineOffset, int ranges[], StyleRange[] styles, Color lineBackground, int indent, int alignment, bool justify) { | |
| 1032 int lineLength = line.length; | |
| 1033 int startOffset = getStart(); | |
| 1034 int writeOffset = startOffset - lineOffset; | |
| 1035 if (writeOffset >= lineLength) return; | |
| 1036 int lineIndex = Math.max(0, writeOffset); | |
| 1037 | |
| 1038 write("\\fi"); | |
| 1039 write(indent); | |
| 1040 switch (alignment) { | |
| 1041 case SWT.LEFT: write("\\ql"); break; | |
| 1042 case SWT.CENTER: write("\\qc"); break; | |
| 1043 case SWT.RIGHT: write("\\qr"); break; | |
| 1044 default: | |
| 1045 } | |
| 1046 if (justify) write("\\qj"); | |
| 1047 write(" "); | |
| 1048 | |
| 1049 if (lineBackground !is null) { | |
| 1050 write("{\\highlight"); | |
| 1051 write(getColorIndex(lineBackground, DEFAULT_BACKGROUND)); | |
| 1052 write(" "); | |
| 1053 } | |
| 1054 int endOffset = startOffset + super.getCharCount(); | |
| 1055 int lineEndOffset = Math.min(lineLength, endOffset - lineOffset); | |
| 1056 for (int i = 0; i < styles.length; i++) { | |
| 1057 StyleRange style = styles[i]; | |
| 1058 int start, end; | |
| 1059 if (ranges !is null) { | |
| 1060 start = ranges[i << 1] - lineOffset; | |
| 1061 end = start + ranges[(i << 1) + 1]; | |
| 1062 } else { | |
| 1063 start = style.start - lineOffset; | |
| 1064 end = start + style.length; | |
| 1065 } | |
| 1066 // skip over partial first line | |
| 1067 if (end < writeOffset) { | |
| 1068 continue; | |
| 1069 } | |
| 1070 // style starts beyond line end or RTF write end | |
| 1071 if (start >= lineEndOffset) { | |
| 1072 break; | |
| 1073 } | |
| 1074 // write any unstyled text | |
| 1075 if (lineIndex < start) { | |
| 1076 // copy to start of style | |
| 1077 // style starting beyond end of write range or end of line | |
| 1078 // is guarded against above. | |
| 1079 write(line, lineIndex, start); | |
| 1080 lineIndex = start; | |
| 1081 } | |
| 1082 // write styled text | |
| 1083 write("{\\cf"); | |
| 1084 write(getColorIndex(style.foreground, DEFAULT_FOREGROUND)); | |
| 1085 int colorIndex = getColorIndex(style.background, DEFAULT_BACKGROUND); | |
| 1086 if (colorIndex !is DEFAULT_BACKGROUND) { | |
| 1087 write("\\highlight"); | |
| 1088 write(colorIndex); | |
| 1089 } | |
| 1090 Font font = style.font; | |
| 1091 if (font !is null) { | |
| 1092 int fontIndex = getFontIndex(font); | |
| 1093 write("\\f"); | |
| 1094 write(fontIndex); | |
| 1095 FontData fontData = font.getFontData()[0]; | |
| 1096 write("\\fs"); | |
| 1097 write(fontData.getHeight() * 2); | |
| 1098 } else { | |
| 1099 if ((style.fontStyle & SWT.BOLD) !is 0) { | |
| 1100 write("\\b"); | |
| 1101 } | |
| 1102 if ((style.fontStyle & SWT.ITALIC) !is 0) { | |
| 1103 write("\\i"); | |
| 1104 } | |
| 1105 } | |
| 1106 if (style.underline) { | |
| 1107 write("\\ul"); | |
| 1108 } | |
| 1109 if (style.strikeout) { | |
| 1110 write("\\strike"); | |
| 1111 } | |
| 1112 write(" "); | |
| 1113 // copy to end of style or end of write range or end of line | |
| 1114 int copyEnd = Math.min(end, lineEndOffset); | |
| 1115 // guard against invalid styles and let style processing continue | |
| 1116 copyEnd = Math.max(copyEnd, lineIndex); | |
| 1117 write(line, lineIndex, copyEnd); | |
| 1118 if (font is null) { | |
| 1119 if ((style.fontStyle & SWT.BOLD) !is 0) { | |
| 1120 write("\\b0"); | |
| 1121 } | |
| 1122 if ((style.fontStyle & SWT.ITALIC) !is 0) { | |
| 1123 write("\\i0"); | |
| 1124 } | |
| 1125 } | |
| 1126 if (style.underline) { | |
| 1127 write("\\ul0"); | |
| 1128 } | |
| 1129 if (style.strikeout) { | |
| 1130 write("\\strike0"); | |
| 1131 } | |
| 1132 write("}"); | |
| 1133 lineIndex = copyEnd; | |
| 1134 } | |
| 1135 // write unstyled text at the end of the line | |
| 1136 if (lineIndex < lineEndOffset) { | |
| 1137 write(line, lineIndex, lineEndOffset); | |
| 1138 } | |
| 1139 if (lineBackground !is null) write("}"); | |
| 1140 } | |
| 1141 } | |
| 1142 /** | |
| 1143 * The <code>TextWriter</code> class is used to write widget content to | |
| 1144 * a string. Whole and partial lines and line breaks can be written. To write | |
| 1145 * partial lines, specify the start and length of the desired segment | |
| 1146 * during object creation. | |
| 1147 * <p> | |
| 1148 * </b>NOTE:</b> <code>toString()</code> is guaranteed to return a valid string only after close() | |
| 1149 * has been called. | |
| 1150 * </p> | |
| 1151 */ | |
| 1152 class TextWriter { | |
| 1153 private StringBuffer buffer; | |
| 1154 private int startOffset; // offset of first character that will be written | |
| 1155 private int endOffset; // offset of last character that will be written. | |
| 1156 // 0 based from the beginning of the widget text. | |
| 1157 private bool isClosed_ = false; | |
| 1158 | |
| 1159 /** | |
| 1160 * Creates a writer that writes content starting at offset "start" | |
| 1161 * in the document. <code>start</code> and <code>length</code> can be set to specify partial lines. | |
| 1162 * | |
| 1163 * @param start start offset of content to write, 0 based from beginning of document | |
| 1164 * @param length length of content to write | |
| 1165 */ | |
| 1166 public this(int start, int length) { | |
| 1167 buffer = new StringBuffer(length); | |
| 1168 startOffset = start; | |
| 1169 endOffset = start + length; | |
| 1170 } | |
| 1171 /** | |
| 1172 * Closes the writer. Once closed no more content can be written. | |
| 1173 * <b>NOTE:</b> <code>toString()</code> is not guaranteed to return a valid string unless | |
| 1174 * the writer is closed. | |
| 1175 */ | |
| 1176 public void close() { | |
| 1177 if (!isClosed_) { | |
| 1178 isClosed_ = true; | |
| 1179 } | |
| 1180 } | |
| 1181 /** | |
| 1182 * Returns the number of characters to write. | |
| 1183 * @return the integer number of characters to write | |
| 1184 */ | |
| 1185 public int getCharCount() { | |
| 1186 return endOffset - startOffset; | |
| 1187 } | |
| 1188 /** | |
| 1189 * Returns the offset where writing starts. 0 based from the start of | |
| 1190 * the widget text. Used to write partial lines. | |
| 1191 * @return the integer offset where writing starts | |
| 1192 */ | |
| 1193 public int getStart() { | |
| 1194 return startOffset; | |
| 1195 } | |
| 1196 /** | |
| 1197 * Returns whether the writer is closed. | |
| 1198 * @return a bool specifying whether or not the writer is closed | |
| 1199 */ | |
| 1200 public bool isClosed() { | |
| 1201 return isClosed_; | |
| 1202 } | |
| 1203 /** | |
| 1204 * Returns the string. <code>close()</code> must be called before <code>toString()</code> | |
| 1205 * is guaranteed to return a valid string. | |
| 1206 * | |
| 1207 * @return the string | |
| 1208 */ | |
| 1209 public override String toString() { | |
| 1210 return buffer.toString(); | |
| 1211 } | |
| 1212 /** | |
| 1213 * Appends the given string to the data. | |
| 1214 */ | |
| 1215 void write(String string) { | |
| 1216 buffer.append(string); | |
| 1217 } | |
| 1218 /** | |
| 1219 * Inserts the given string to the data at the specified offset. | |
| 1220 * <p> | |
| 1221 * Do nothing if "offset" is < 0 or > getCharCount() | |
| 1222 * </p> | |
| 1223 * | |
| 1224 * @param string text to insert | |
| 1225 * @param offset offset in the existing data to insert "string" at. | |
| 1226 */ | |
| 1227 void write(String string, int offset) { | |
| 1228 if (offset < 0 || offset > buffer.length()) { | |
| 1229 return; | |
| 1230 } | |
| 1231 buffer.insert( offset, string ); | |
| 1232 } | |
| 1233 /** | |
| 1234 * Appends the given int to the data. | |
| 1235 */ | |
| 1236 void write(int i) { | |
| 1237 buffer.append(i); | |
| 1238 } | |
| 1239 /** | |
| 1240 * Appends the given character to the data. | |
| 1241 */ | |
| 1242 void write(char i) { | |
| 1243 buffer.append(i); | |
| 1244 } | |
| 1245 /** | |
| 1246 * Appends the specified line text to the data. | |
| 1247 * | |
| 1248 * @param line line text to write. Must not contain line breaks | |
| 1249 * Line breaks should be written using writeLineDelimiter() | |
| 1250 * @param lineOffset offset of the line. 0 based from the start of the | |
| 1251 * widget document. Any text occurring before the start offset or after the | |
| 1252 * end offset specified during object creation is ignored. | |
| 1253 * @exception SWTException <ul> | |
| 1254 * <li>ERROR_IO when the writer is closed.</li> | |
| 1255 * </ul> | |
| 1256 */ | |
| 1257 public void writeLine(String line, int lineOffset) { | |
| 1258 if (isClosed_) { | |
| 1259 SWT.error(SWT.ERROR_IO); | |
| 1260 } | |
| 1261 int writeOffset = startOffset - lineOffset; | |
| 1262 int lineLength = line.length; | |
| 1263 int lineIndex; | |
| 1264 if (writeOffset >= lineLength) { | |
| 1265 return; // whole line is outside write range | |
| 1266 } else if (writeOffset > 0) { | |
| 1267 lineIndex = writeOffset; // line starts before write start | |
| 1268 } else { | |
| 1269 lineIndex = 0; | |
| 1270 } | |
| 1271 int copyEnd = Math.min(lineLength, endOffset - lineOffset); | |
| 1272 if (lineIndex < copyEnd) { | |
| 1273 write(line.substring(lineIndex, copyEnd)); | |
| 1274 } | |
| 1275 } | |
| 1276 /** | |
| 1277 * Appends the specified line delimiter to the data. | |
| 1278 * | |
| 1279 * @param lineDelimiter line delimiter to write | |
| 1280 * @exception SWTException <ul> | |
| 1281 * <li>ERROR_IO when the writer is closed.</li> | |
| 1282 * </ul> | |
| 1283 */ | |
| 1284 public void writeLineDelimiter(String lineDelimiter) { | |
| 1285 if (isClosed_) { | |
| 1286 SWT.error(SWT.ERROR_IO); | |
| 1287 } | |
| 1288 write(lineDelimiter); | |
| 1289 } | |
| 1290 } | |
| 1291 | |
| 1292 /** | |
| 1293 * Constructs a new instance of this class given its parent | |
| 1294 * and a style value describing its behavior and appearance. | |
| 1295 * <p> | |
| 1296 * The style value is either one of the style constants defined in | |
| 1297 * class <code>SWT</code> which is applicable to instances of this | |
| 1298 * class, or must be built by <em>bitwise OR</em>'ing together | |
| 1299 * (that is, using the <code>int</code> "|" operator) two or more | |
| 1300 * of those <code>SWT</code> style constants. The class description | |
| 1301 * lists the style constants that are applicable to the class. | |
| 1302 * Style bits are also inherited from superclasses. | |
| 1303 * </p> | |
| 1304 * | |
| 1305 * @param parent a widget which will be the parent of the new instance (cannot be null) | |
| 1306 * @param style the style of widget to construct | |
| 1307 * | |
| 1308 * @exception IllegalArgumentException <ul> | |
| 1309 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> | |
| 1310 * </ul> | |
| 1311 * @exception SWTException <ul> | |
| 1312 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> | |
| 1313 * </ul> | |
| 1314 * | |
| 1315 * @see SWT#FULL_SELECTION | |
| 1316 * @see SWT#MULTI | |
| 1317 * @see SWT#READ_ONLY | |
| 1318 * @see SWT#SINGLE | |
| 1319 * @see SWT#WRAP | |
| 1320 * @see #getStyle | |
| 1321 */ | |
| 1322 public this(Composite parent, int style) { | |
| 1323 selection = new Point(0, 0); | |
| 1324 super(parent, checkStyle(style)); | |
| 1325 // set the fg in the OS to ensure that these are the same as StyledText, necessary | |
| 1326 // for ensuring that the bg/fg the IME box uses is the same as what StyledText uses | |
| 1327 super.setForeground(getForeground()); | |
| 1328 super.setDragDetect(false); | |
| 1329 Display display = getDisplay(); | |
| 1330 isMirrored_ = (super.getStyle() & SWT.MIRRORED) !is 0; | |
| 1331 fixedLineHeight = true; | |
| 1332 if ((style & SWT.READ_ONLY) !is 0) { | |
| 1333 setEditable(false); | |
| 1334 } | |
| 1335 leftMargin = rightMargin = isBidiCaret() ? BIDI_CARET_WIDTH - 1: 0; | |
| 1336 if ((style & SWT.SINGLE) !is 0 && (style & SWT.BORDER) !is 0) { | |
| 1337 leftMargin = topMargin = rightMargin = bottomMargin = 2; | |
| 1338 } | |
| 1339 alignment = style & (SWT.LEFT | SWT.RIGHT | SWT.CENTER); | |
| 1340 if (alignment is 0) alignment = SWT.LEFT; | |
| 1341 clipboard = new Clipboard(display); | |
| 1342 installDefaultContent(); | |
| 1343 renderer = new StyledTextRenderer(getDisplay(), this); | |
| 1344 renderer.setContent(content); | |
| 1345 renderer.setFont(getFont(), tabLength); | |
| 1346 ime = new IME(this, SWT.NONE); | |
| 1347 defaultCaret = new Caret(this, SWT.NONE); | |
| 1348 if ((style & SWT.WRAP) !is 0) { | |
| 1349 setWordWrap(true); | |
| 1350 } | |
| 1351 if (isBidiCaret()) { | |
| 1352 createCaretBitmaps(); | |
| 1353 Runnable runnable = new class() Runnable { | |
| 1354 public void run() { | |
| 1355 int direction = BidiUtil.getKeyboardLanguage() is BidiUtil.KEYBOARD_BIDI ? SWT.RIGHT : SWT.LEFT; | |
| 1356 if (direction is caretDirection) return; | |
| 1357 if (getCaret() !is defaultCaret) return; | |
| 1358 Point newCaretPos = getPointAtOffset(caretOffset); | |
| 1359 setCaretLocation(newCaretPos, direction); | |
| 1360 } | |
| 1361 }; | |
| 1362 BidiUtil.addLanguageListener(this, runnable); | |
| 1363 } | |
| 1364 setCaret(defaultCaret); | |
| 1365 calculateScrollBars(); | |
| 1366 createKeyBindings(); | |
| 1367 setCursor(display.getSystemCursor(SWT.CURSOR_IBEAM)); | |
| 1368 installListeners(); | |
| 1369 initializeAccessible(); | |
| 1370 setData("DEFAULT_DROP_TARGET_EFFECT", new StyledTextDropTargetEffect(this)); | |
| 1371 } | |
| 1372 /** | |
| 1373 * Adds an extended modify listener. An ExtendedModify event is sent by the | |
| 1374 * widget when the widget text has changed. | |
| 1375 * | |
| 1376 * @param extendedModifyListener the listener | |
| 1377 * @exception SWTException <ul> | |
| 1378 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1379 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1380 * </ul> | |
| 1381 * @exception IllegalArgumentException <ul> | |
| 1382 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1383 * </ul> | |
| 1384 */ | |
| 1385 public void addExtendedModifyListener(ExtendedModifyListener extendedModifyListener) { | |
| 1386 checkWidget(); | |
| 1387 if (extendedModifyListener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1388 StyledTextListener typedListener = new StyledTextListener(extendedModifyListener); | |
| 1389 addListener(ExtendedModify, typedListener); | |
| 1390 } | |
| 1391 /** | |
| 1392 * Adds a bidirectional segment listener. | |
| 1393 * <p> | |
| 1394 * A BidiSegmentEvent is sent | |
| 1395 * whenever a line of text is measured or rendered. The user can | |
| 1396 * specify text ranges in the line that should be treated as if they | |
| 1397 * had a different direction than the surrounding text. | |
| 1398 * This may be used when adjacent segments of right-to-left text should | |
| 1399 * not be reordered relative to each other. | |
| 1400 * E.g., Multiple Java string literals in a right-to-left language | |
| 1401 * should generally remain in logical order to each other, that is, the | |
| 1402 * way they are stored. | |
| 1403 * </p> | |
| 1404 * | |
| 1405 * @param listener the listener | |
| 1406 * @exception SWTException <ul> | |
| 1407 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1408 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1409 * </ul> | |
| 1410 * @exception IllegalArgumentException <ul> | |
| 1411 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1412 * </ul> | |
| 1413 * @see BidiSegmentEvent | |
| 1414 * @since 2.0 | |
| 1415 */ | |
| 1416 public void addBidiSegmentListener(BidiSegmentListener listener) { | |
| 1417 checkWidget(); | |
| 1418 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1419 addListener(LineGetSegments, new StyledTextListener(listener)); | |
| 1420 } | |
| 1421 /** | |
| 1422 * Adds a line background listener. A LineGetBackground event is sent by the | |
| 1423 * widget to determine the background color for a line. | |
| 1424 * | |
| 1425 * @param listener the listener | |
| 1426 * @exception SWTException <ul> | |
| 1427 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1428 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1429 * </ul> | |
| 1430 * @exception IllegalArgumentException <ul> | |
| 1431 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1432 * </ul> | |
| 1433 */ | |
| 1434 public void addLineBackgroundListener(LineBackgroundListener listener) { | |
| 1435 checkWidget(); | |
| 1436 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1437 if (!isListening(LineGetBackground)) { | |
| 1438 renderer.clearLineBackground(0, content.getLineCount()); | |
| 1439 } | |
| 1440 addListener(LineGetBackground, new StyledTextListener(listener)); | |
| 1441 } | |
| 1442 /** | |
| 1443 * Adds a line style listener. A LineGetStyle event is sent by the widget to | |
| 1444 * determine the styles for a line. | |
| 1445 * | |
| 1446 * @param listener the listener | |
| 1447 * @exception SWTException <ul> | |
| 1448 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1449 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1450 * </ul> | |
| 1451 * @exception IllegalArgumentException <ul> | |
| 1452 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1453 * </ul> | |
| 1454 */ | |
| 1455 public void addLineStyleListener(LineStyleListener listener) { | |
| 1456 checkWidget(); | |
| 1457 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1458 if (!isListening(LineGetStyle)) { | |
| 1459 setStyleRanges(0, 0, null, null, true); | |
| 1460 renderer.clearLineStyle(0, content.getLineCount()); | |
| 1461 } | |
| 1462 addListener(LineGetStyle, new StyledTextListener(listener)); | |
| 1463 } | |
| 1464 /** | |
| 1465 * Adds a modify listener. A Modify event is sent by the widget when the widget text | |
| 1466 * has changed. | |
| 1467 * | |
| 1468 * @param modifyListener the listener | |
| 1469 * @exception SWTException <ul> | |
| 1470 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1471 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1472 * </ul> | |
| 1473 * @exception IllegalArgumentException <ul> | |
| 1474 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1475 * </ul> | |
| 1476 */ | |
| 1477 public void addModifyListener(ModifyListener modifyListener) { | |
| 1478 checkWidget(); | |
| 1479 if (modifyListener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1480 addListener(SWT.Modify, new TypedListener(modifyListener)); | |
| 1481 } | |
| 1482 /** | |
| 1483 * Adds a paint object listener. A paint object event is sent by the widget when an object | |
| 1484 * needs to be drawn. | |
| 1485 * | |
| 1486 * @param listener the listener | |
| 1487 * @exception SWTException <ul> | |
| 1488 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1489 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1490 * </ul> | |
| 1491 * @exception IllegalArgumentException <ul> | |
| 1492 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1493 * </ul> | |
| 1494 * | |
| 1495 * @since 3.2 | |
| 1496 * | |
| 1497 * @see PaintObjectListener | |
| 1498 * @see PaintObjectEvent | |
| 1499 */ | |
| 1500 public void addPaintObjectListener(PaintObjectListener listener) { | |
| 1501 checkWidget(); | |
| 1502 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1503 addListener(PaintObject, new StyledTextListener(listener)); | |
| 1504 } | |
| 1505 /** | |
| 1506 * Adds a selection listener. A Selection event is sent by the widget when the | |
| 1507 * user changes the selection. | |
| 1508 * <p> | |
| 1509 * When <code>widgetSelected</code> is called, the event x and y fields contain | |
| 1510 * the start and end caret indices of the selection. | |
| 1511 * <code>widgetDefaultSelected</code> is not called for StyledTexts. | |
| 1512 * </p> | |
| 1513 * | |
| 1514 * @param listener the listener which should be notified when the user changes the receiver's selection | |
| 1515 | |
| 1516 * @exception IllegalArgumentException <ul> | |
| 1517 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 1518 * </ul> | |
| 1519 * @exception SWTException <ul> | |
| 1520 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1521 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1522 * </ul> | |
| 1523 * | |
| 1524 * @see SelectionListener | |
| 1525 * @see #removeSelectionListener | |
| 1526 * @see SelectionEvent | |
| 1527 */ | |
| 1528 public void addSelectionListener(SelectionListener listener) { | |
| 1529 checkWidget(); | |
| 1530 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1531 addListener(SWT.Selection, new TypedListener(listener)); | |
| 1532 } | |
| 1533 /** | |
| 1534 * Adds a verify key listener. A VerifyKey event is sent by the widget when a key | |
| 1535 * is pressed. The widget ignores the key press if the listener sets the doit field | |
| 1536 * of the event to false. | |
| 1537 * | |
| 1538 * @param listener the listener | |
| 1539 * @exception SWTException <ul> | |
| 1540 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1541 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1542 * </ul> | |
| 1543 * @exception IllegalArgumentException <ul> | |
| 1544 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1545 * </ul> | |
| 1546 */ | |
| 1547 public void addVerifyKeyListener(VerifyKeyListener listener) { | |
| 1548 checkWidget(); | |
| 1549 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1550 addListener(VerifyKey, new StyledTextListener(listener)); | |
| 1551 } | |
| 1552 /** | |
| 1553 * Adds a verify listener. A Verify event is sent by the widget when the widget text | |
| 1554 * is about to change. The listener can set the event text and the doit field to | |
| 1555 * change the text that is set in the widget or to force the widget to ignore the | |
| 1556 * text change. | |
| 1557 * | |
| 1558 * @param verifyListener the listener | |
| 1559 * @exception SWTException <ul> | |
| 1560 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1561 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1562 * </ul> | |
| 1563 * @exception IllegalArgumentException <ul> | |
| 1564 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1565 * </ul> | |
| 1566 */ | |
| 1567 public void addVerifyListener(VerifyListener verifyListener) { | |
| 1568 checkWidget(); | |
| 1569 if (verifyListener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1570 addListener(SWT.Verify, new TypedListener(verifyListener)); | |
| 1571 } | |
| 1572 /** | |
| 1573 * Adds a word movement listener. A movement event is sent when the boundary | |
| 1574 * of a word is needed. For example, this occurs during word next and word | |
| 1575 * previous actions. | |
| 1576 * | |
| 1577 * @param movementListener the listener | |
| 1578 * @exception SWTException <ul> | |
| 1579 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1580 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1581 * </ul> | |
| 1582 * @exception IllegalArgumentException <ul> | |
| 1583 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1584 * </ul> | |
| 1585 * | |
| 1586 * @see MovementEvent | |
| 1587 * @see MovementListener | |
| 1588 * @see #removeWordMovementListener | |
| 1589 * | |
| 1590 * @since 3.3 | |
| 1591 */ | |
| 1592 public void addWordMovementListener(MovementListener movementListener) { | |
| 1593 checkWidget(); | |
| 1594 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1595 addListener(WordNext, new StyledTextListener(movementListener)); | |
| 1596 addListener(WordPrevious, new StyledTextListener(movementListener)); | |
| 1597 } | |
| 1598 /** | |
| 1599 * Appends a string to the text at the end of the widget. | |
| 1600 * | |
| 1601 * @param string the string to be appended | |
| 1602 * @see #replaceTextRange(int,int,String) | |
| 1603 * @exception SWTException <ul> | |
| 1604 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1605 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1606 * </ul> | |
| 1607 */ | |
| 1608 public void append(String string) { | |
| 1609 checkWidget(); | |
| 1610 // SWT extension: allow null for zero length string | |
| 1611 // if (string is null) { | |
| 1612 // SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 1613 // } | |
| 1614 int lastChar = Math.max(getCharCount(), 0); | |
| 1615 replaceTextRange(lastChar, 0, string); | |
| 1616 } | |
| 1617 /** | |
| 1618 * Calculates the scroll bars | |
| 1619 */ | |
| 1620 void calculateScrollBars() { | |
| 1621 ScrollBar horizontalBar = getHorizontalBar(); | |
| 1622 ScrollBar verticalBar = getVerticalBar(); | |
| 1623 setScrollBars(true); | |
| 1624 if (verticalBar !is null) { | |
| 1625 verticalBar.setIncrement(getVerticalIncrement()); | |
| 1626 } | |
| 1627 if (horizontalBar !is null) { | |
| 1628 horizontalBar.setIncrement(getHorizontalIncrement()); | |
| 1629 } | |
| 1630 } | |
| 1631 /** | |
| 1632 * Calculates the top index based on the current vertical scroll offset. | |
| 1633 * The top index is the index of the topmost fully visible line or the | |
| 1634 * topmost partially visible line if no line is fully visible. | |
| 1635 * The top index starts at 0. | |
| 1636 */ | |
| 1637 void calculateTopIndex(int delta) { | |
| 1638 int oldTopIndex = topIndex; | |
| 1639 int oldTopIndexY = topIndexY; | |
| 1640 if (isFixedLineHeight()) { | |
| 1641 int verticalIncrement = getVerticalIncrement(); | |
| 1642 if (verticalIncrement is 0) { | |
| 1643 return; | |
| 1644 } | |
| 1645 topIndex = Compatibility.ceil(getVerticalScrollOffset(), verticalIncrement); | |
| 1646 // Set top index to partially visible top line if no line is fully | |
| 1647 // visible but at least some of the widget client area is visible. | |
| 1648 // Fixes bug 15088. | |
| 1649 if (topIndex > 0) { | |
| 1650 if (clientAreaHeight > 0) { | |
| 1651 int bottomPixel = getVerticalScrollOffset() + clientAreaHeight; | |
| 1652 int fullLineTopPixel = topIndex * verticalIncrement; | |
| 1653 int fullLineVisibleHeight = bottomPixel - fullLineTopPixel; | |
| 1654 // set top index to partially visible line if no line fully fits in | |
| 1655 // client area or if space is available but not used (the latter should | |
| 1656 // never happen because we use claimBottomFreeSpace) | |
| 1657 if (fullLineVisibleHeight < verticalIncrement) { | |
| 1658 topIndex--; | |
| 1659 } | |
| 1660 } else if (topIndex >= content.getLineCount()) { | |
| 1661 topIndex = content.getLineCount() - 1; | |
| 1662 } | |
| 1663 } | |
| 1664 } else { | |
| 1665 if (delta >= 0) { | |
| 1666 delta -= topIndexY; | |
| 1667 int lineIndex = topIndex; | |
| 1668 int lineCount = content.getLineCount(); | |
| 1669 while (lineIndex < lineCount) { | |
| 1670 if (delta <= 0) break; | |
| 1671 delta -= renderer.getLineHeight(lineIndex++); | |
| 1672 } | |
| 1673 if (lineIndex < lineCount && -delta + renderer.getLineHeight(lineIndex) <= clientAreaHeight - topMargin - bottomMargin) { | |
| 1674 topIndex = lineIndex; | |
| 1675 topIndexY = -delta; | |
| 1676 } else { | |
| 1677 topIndex = lineIndex - 1; | |
| 1678 topIndexY = -renderer.getLineHeight(topIndex) - delta; | |
| 1679 } | |
| 1680 } else { | |
| 1681 delta -= topIndexY; | |
| 1682 int lineIndex = topIndex; | |
| 1683 while (lineIndex > 0) { | |
| 1684 int lineHeight = renderer.getLineHeight(lineIndex - 1); | |
| 1685 if (delta + lineHeight > 0) break; | |
| 1686 delta += lineHeight; | |
| 1687 lineIndex--; | |
| 1688 } | |
| 1689 if (lineIndex is 0 || -delta + renderer.getLineHeight(lineIndex) <= clientAreaHeight - topMargin - bottomMargin) { | |
| 1690 topIndex = lineIndex; | |
| 1691 topIndexY = - delta; | |
| 1692 } else { | |
| 1693 topIndex = lineIndex - 1; | |
| 1694 topIndexY = - renderer.getLineHeight(topIndex) - delta; | |
| 1695 } | |
| 1696 } | |
| 1697 } | |
| 1698 if (topIndex !is oldTopIndex || oldTopIndexY !is topIndexY) { | |
| 1699 renderer.calculateClientArea(); | |
| 1700 setScrollBars(false); | |
| 1701 } | |
| 1702 } | |
| 1703 /** | |
| 1704 * Hides the scroll bars if widget is created in single line mode. | |
| 1705 */ | |
| 1706 static int checkStyle(int style) { | |
| 1707 if ((style & SWT.SINGLE) !is 0) { | |
| 1708 style &= ~(SWT.H_SCROLL | SWT.V_SCROLL | SWT.WRAP | SWT.MULTI); | |
| 1709 } else { | |
| 1710 style |= SWT.MULTI; | |
| 1711 if ((style & SWT.WRAP) !is 0) { | |
| 1712 style &= ~SWT.H_SCROLL; | |
| 1713 } | |
| 1714 } | |
| 1715 style |= SWT.NO_REDRAW_RESIZE | SWT.DOUBLE_BUFFERED | SWT.NO_BACKGROUND; | |
| 1716 return style; | |
| 1717 } | |
| 1718 /** | |
| 1719 * Scrolls down the text to use new space made available by a resize or by | |
| 1720 * deleted lines. | |
| 1721 */ | |
| 1722 void claimBottomFreeSpace() { | |
| 1723 int clientAreaHeight = this.clientAreaHeight - topMargin - bottomMargin; | |
| 1724 if (isFixedLineHeight()) { | |
| 1725 int lineHeight = renderer.getLineHeight(); | |
| 1726 int newVerticalOffset = Math.max(0, content.getLineCount() * lineHeight - clientAreaHeight); | |
| 1727 if (newVerticalOffset < getVerticalScrollOffset()) { | |
| 1728 scrollVertical(newVerticalOffset - getVerticalScrollOffset(), true); | |
| 1729 } | |
| 1730 } else { | |
| 1731 int bottomIndex = getPartialBottomIndex(); | |
| 1732 int height = getLinePixel(bottomIndex + 1); | |
| 1733 if (clientAreaHeight > height) { | |
| 1734 scrollVertical(-getAvailableHeightAbove(clientAreaHeight - height), true); | |
| 1735 } | |
| 1736 } | |
| 1737 } | |
| 1738 /** | |
| 1739 * Scrolls text to the right to use new space made available by a resize. | |
| 1740 */ | |
| 1741 void claimRightFreeSpace() { | |
| 1742 int newHorizontalOffset = Math.max(0, renderer.getWidth() - (clientAreaWidth - leftMargin - rightMargin)); | |
| 1743 if (newHorizontalOffset < horizontalScrollOffset) { | |
| 1744 // item is no longer drawn past the right border of the client area | |
| 1745 // align the right end of the item with the right border of the | |
| 1746 // client area (window is scrolled right). | |
| 1747 scrollHorizontal(newHorizontalOffset - horizontalScrollOffset, true); | |
| 1748 } | |
| 1749 } | |
| 1750 /** | |
| 1751 * Removes the widget selection. | |
| 1752 * | |
| 1753 * @param sendEvent a Selection event is sent when set to true and when the selection is actually reset. | |
| 1754 */ | |
| 1755 void clearSelection(bool sendEvent) { | |
| 1756 int selectionStart = selection.x; | |
| 1757 int selectionEnd = selection.y; | |
| 1758 resetSelection(); | |
| 1759 // redraw old selection, if any | |
| 1760 if (selectionEnd - selectionStart > 0) { | |
| 1761 int length = content.getCharCount(); | |
| 1762 // called internally to remove selection after text is removed | |
| 1763 // therefore make sure redraw range is valid. | |
| 1764 int redrawStart = Math.min(selectionStart, length); | |
| 1765 int redrawEnd = Math.min(selectionEnd, length); | |
| 1766 if (redrawEnd - redrawStart > 0) { | |
| 1767 internalRedrawRange(redrawStart, redrawEnd - redrawStart); | |
| 1768 } | |
| 1769 if (sendEvent) { | |
| 1770 sendSelectionEvent(); | |
| 1771 } | |
| 1772 } | |
| 1773 } | |
| 1774 public override Point computeSize (int wHint, int hHint, bool changed) { | |
| 1775 checkWidget(); | |
| 1776 int lineCount = (getStyle() & SWT.SINGLE) !is 0 ? 1 : content.getLineCount(); | |
| 1777 int width = 0; | |
| 1778 int height = 0; | |
| 1779 if (wHint is SWT.DEFAULT || hHint is SWT.DEFAULT) { | |
| 1780 Display display = getDisplay(); | |
| 1781 int maxHeight = display.getClientArea().height; | |
| 1782 for (int lineIndex = 0; lineIndex < lineCount; lineIndex++) { | |
| 1783 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 1784 int wrapWidth = layout.getWidth(); | |
| 1785 if (wordWrap) layout.setWidth(wHint is 0 ? 1 : wHint); | |
| 1786 Rectangle rect = layout.getBounds(); | |
| 1787 height += rect.height; | |
| 1788 width = Math.max(width, rect.width); | |
| 1789 layout.setWidth(wrapWidth); | |
| 1790 renderer.disposeTextLayout(layout); | |
| 1791 if (isFixedLineHeight() && height > maxHeight) break; | |
| 1792 } | |
| 1793 if (isFixedLineHeight()) { | |
| 1794 height = lineCount * renderer.getLineHeight(); | |
| 1795 } | |
| 1796 } | |
| 1797 // Use default values if no text is defined. | |
| 1798 if (width is 0) width = DEFAULT_WIDTH; | |
| 1799 if (height is 0) height = DEFAULT_HEIGHT; | |
| 1800 if (wHint !is SWT.DEFAULT) width = wHint; | |
| 1801 if (hHint !is SWT.DEFAULT) height = hHint; | |
| 1802 int wTrim = leftMargin + rightMargin + getCaretWidth(); | |
| 1803 int hTrim = topMargin + bottomMargin; | |
| 1804 Rectangle rect = computeTrim(0, 0, width + wTrim, height + hTrim); | |
| 1805 return new Point (rect.width, rect.height); | |
| 1806 } | |
| 1807 /** | |
| 1808 * Copies the selected text to the <code>DND.CLIPBOARD</code> clipboard. | |
| 1809 * <p> | |
| 1810 * The text will be put on the clipboard in plain text format and RTF format. | |
| 1811 * The <code>DND.CLIPBOARD</code> clipboard is used for data that is | |
| 1812 * transferred by keyboard accelerator (such as Ctrl+C/Ctrl+V) or | |
| 1813 * by menu action. | |
| 1814 * </p> | |
| 1815 * | |
| 1816 * @exception SWTException <ul> | |
| 1817 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1818 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1819 * </ul> | |
| 1820 */ | |
| 1821 public void copy() { | |
| 1822 checkWidget(); | |
| 1823 copy(DND.CLIPBOARD); | |
| 1824 } | |
| 1825 /** | |
| 1826 * Copies the selected text to the specified clipboard. The text will be put in the | |
| 1827 * clipboard in plain text format and RTF format. | |
| 1828 * <p> | |
| 1829 * The clipboardType is one of the clipboard constants defined in class | |
| 1830 * <code>DND</code>. The <code>DND.CLIPBOARD</code> clipboard is | |
| 1831 * used for data that is transferred by keyboard accelerator (such as Ctrl+C/Ctrl+V) | |
| 1832 * or by menu action. The <code>DND.SELECTION_CLIPBOARD</code> | |
| 1833 * clipboard is used for data that is transferred by selecting text and pasting | |
| 1834 * with the middle mouse button. | |
| 1835 * </p> | |
| 1836 * | |
| 1837 * @param clipboardType indicates the type of clipboard | |
| 1838 * | |
| 1839 * @exception SWTException <ul> | |
| 1840 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1841 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1842 * </ul> | |
| 1843 * | |
| 1844 * @since 3.1 | |
| 1845 */ | |
| 1846 public void copy(int clipboardType) { | |
| 1847 checkWidget(); | |
| 1848 if (clipboardType !is DND.CLIPBOARD && clipboardType !is DND.SELECTION_CLIPBOARD) return; | |
| 1849 int length = selection.y - selection.x; | |
| 1850 if (length > 0) { | |
| 1851 try { | |
| 1852 setClipboardContent(selection.x, length, clipboardType); | |
| 1853 } catch (SWTError error) { | |
| 1854 // Copy to clipboard failed. This happens when another application | |
| 1855 // is accessing the clipboard while we copy. Ignore the error. | |
| 1856 // Fixes 1GDQAVN | |
| 1857 // Rethrow all other errors. Fixes bug 17578. | |
| 1858 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 1859 throw error; | |
| 1860 } | |
| 1861 } | |
| 1862 } | |
| 1863 } | |
| 1864 /** | |
| 1865 * Returns the alignment of the widget. | |
| 1866 * | |
| 1867 * @return the alignment | |
| 1868 * | |
| 1869 * @exception SWTException <ul> | |
| 1870 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1871 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1872 * </ul> | |
| 1873 * | |
| 1874 * @see #getLineAlignment(int) | |
| 1875 * | |
| 1876 * @since 3.2 | |
| 1877 */ | |
| 1878 public int getAlignment() { | |
| 1879 checkWidget(); | |
| 1880 return alignment; | |
| 1881 } | |
| 1882 int getAvailableHeightAbove(int height) { | |
| 1883 int maxHeight = verticalScrollOffset; | |
| 1884 if (maxHeight is -1) { | |
| 1885 int lineIndex = topIndex - 1; | |
| 1886 maxHeight = -topIndexY; | |
| 1887 if (topIndexY > 0) { | |
| 1888 maxHeight += renderer.getLineHeight(lineIndex--); | |
| 1889 } | |
| 1890 while (height > maxHeight && lineIndex >= 0) { | |
| 1891 maxHeight += renderer.getLineHeight(lineIndex--); | |
| 1892 } | |
| 1893 } | |
| 1894 return Math.min(height, maxHeight); | |
| 1895 } | |
| 1896 int getAvailableHeightBellow(int height) { | |
| 1897 int partialBottomIndex = getPartialBottomIndex(); | |
| 1898 int topY = getLinePixel(partialBottomIndex); | |
| 1899 int lineHeight = renderer.getLineHeight(partialBottomIndex); | |
| 1900 int availableHeight = 0; | |
| 1901 int clientAreaHeight = this.clientAreaHeight - topMargin - bottomMargin; | |
| 1902 if (topY + lineHeight > clientAreaHeight) { | |
| 1903 availableHeight = lineHeight - (clientAreaHeight - topY); | |
| 1904 } | |
| 1905 int lineIndex = partialBottomIndex + 1; | |
| 1906 int lineCount = content.getLineCount(); | |
| 1907 while (height > availableHeight && lineIndex < lineCount) { | |
| 1908 availableHeight += renderer.getLineHeight(lineIndex++); | |
| 1909 } | |
| 1910 return Math.min(height, availableHeight); | |
| 1911 } | |
| 1912 /** | |
| 1913 * Returns a string that uses only the line delimiter specified by the | |
| 1914 * StyledTextContent implementation. | |
| 1915 * <p> | |
| 1916 * Returns only the first line if the widget has the SWT.SINGLE style. | |
| 1917 * </p> | |
| 1918 * | |
| 1919 * @param text the text that may have line delimiters that don't | |
| 1920 * match the model line delimiter. Possible line delimiters | |
| 1921 * are CR ('\r'), LF ('\n'), CR/LF ("\r\n") | |
| 1922 * @return the converted text that only uses the line delimiter | |
| 1923 * specified by the model. Returns only the first line if the widget | |
| 1924 * has the SWT.SINGLE style. | |
| 1925 */ | |
| 1926 String getModelDelimitedText(String text) { | |
| 1927 int length = text.length; | |
| 1928 if (length is 0) { | |
| 1929 return text; | |
| 1930 } | |
| 1931 int crIndex = 0; | |
| 1932 int lfIndex = 0; | |
| 1933 int i = 0; | |
| 1934 StringBuffer convertedText = new StringBuffer(length); | |
| 1935 String delimiter = getLineDelimiter(); | |
| 1936 while (i < length) { | |
| 1937 if (crIndex !is -1) { | |
| 1938 crIndex = text.indexOf (SWT.CR, i); | |
| 1939 } | |
| 1940 if (lfIndex !is -1) { | |
| 1941 lfIndex = text.indexOf (SWT.LF, i); | |
| 1942 } | |
| 1943 if (lfIndex is -1 && crIndex is -1) { // no more line breaks? | |
| 1944 break; | |
| 1945 } else if ((crIndex < lfIndex && crIndex !is -1) || lfIndex is -1) { | |
| 1946 convertedText.append(text.substring(i, crIndex)); | |
| 1947 if (lfIndex is crIndex + 1) { // CR/LF combination? | |
| 1948 i = lfIndex + 1; | |
| 1949 } else { | |
| 1950 i = crIndex + 1; | |
| 1951 } | |
| 1952 } else { // LF occurs before CR! | |
| 1953 convertedText.append(text.substring(i, lfIndex)); | |
| 1954 i = lfIndex + 1; | |
| 1955 } | |
| 1956 if (isSingleLine()) { | |
| 1957 break; | |
| 1958 } | |
| 1959 convertedText.append(delimiter); | |
| 1960 } | |
| 1961 // copy remaining text if any and if not in single line mode or no | |
| 1962 // text copied thus far (because there only is one line) | |
| 1963 if (i < length && (!isSingleLine() || convertedText.length() is 0)) { | |
| 1964 convertedText.append(text.substring(i)); | |
| 1965 } | |
| 1966 return convertedText.toString(); | |
| 1967 } | |
| 1968 bool checkDragDetect(Event event) { | |
| 1969 if (!isListening(SWT.DragDetect)) return false; | |
| 1970 if (IS_MOTIF) { | |
| 1971 if (event.button !is 2) return false; | |
| 1972 } else { | |
| 1973 if (event.button !is 1) return false; | |
| 1974 } | |
| 1975 if (selection.x is selection.y) return false; | |
| 1976 int offset = getOffsetAtPoint(event.x, event.y, null, true); | |
| 1977 if (selection.x <= offset && offset < selection.y) { | |
| 1978 return dragDetect(event); | |
| 1979 } | |
| 1980 return false; | |
| 1981 } | |
| 1982 /** | |
| 1983 * Creates default key bindings. | |
| 1984 */ | |
| 1985 void createKeyBindings() { | |
| 1986 int nextKey = isMirrored() ? SWT.ARROW_LEFT : SWT.ARROW_RIGHT; | |
| 1987 int previousKey = isMirrored() ? SWT.ARROW_RIGHT : SWT.ARROW_LEFT; | |
| 1988 | |
| 1989 // Navigation | |
| 1990 setKeyBinding(SWT.ARROW_UP, ST.LINE_UP); | |
| 1991 setKeyBinding(SWT.ARROW_DOWN, ST.LINE_DOWN); | |
| 1992 if (IS_CARBON) { | |
| 1993 setKeyBinding(previousKey | SWT.MOD1, ST.LINE_START); | |
| 1994 setKeyBinding(nextKey | SWT.MOD1, ST.LINE_END); | |
| 1995 setKeyBinding(SWT.HOME, ST.TEXT_START); | |
| 1996 setKeyBinding(SWT.END, ST.TEXT_END); | |
| 1997 setKeyBinding(SWT.ARROW_UP | SWT.MOD1, ST.TEXT_START); | |
| 1998 setKeyBinding(SWT.ARROW_DOWN | SWT.MOD1, ST.TEXT_END); | |
| 1999 setKeyBinding(nextKey | SWT.MOD3, ST.WORD_NEXT); | |
| 2000 setKeyBinding(previousKey | SWT.MOD3, ST.WORD_PREVIOUS); | |
| 2001 } else { | |
| 2002 setKeyBinding(SWT.HOME, ST.LINE_START); | |
| 2003 setKeyBinding(SWT.END, ST.LINE_END); | |
| 2004 setKeyBinding(SWT.HOME | SWT.MOD1, ST.TEXT_START); | |
| 2005 setKeyBinding(SWT.END | SWT.MOD1, ST.TEXT_END); | |
| 2006 setKeyBinding(nextKey | SWT.MOD1, ST.WORD_NEXT); | |
| 2007 setKeyBinding(previousKey | SWT.MOD1, ST.WORD_PREVIOUS); | |
| 2008 } | |
| 2009 setKeyBinding(SWT.PAGE_UP, ST.PAGE_UP); | |
| 2010 setKeyBinding(SWT.PAGE_DOWN, ST.PAGE_DOWN); | |
| 2011 setKeyBinding(SWT.PAGE_UP | SWT.MOD1, ST.WINDOW_START); | |
| 2012 setKeyBinding(SWT.PAGE_DOWN | SWT.MOD1, ST.WINDOW_END); | |
| 2013 setKeyBinding(nextKey, ST.COLUMN_NEXT); | |
| 2014 setKeyBinding(previousKey, ST.COLUMN_PREVIOUS); | |
| 2015 | |
| 2016 // Selection | |
| 2017 setKeyBinding(SWT.ARROW_UP | SWT.MOD2, ST.SELECT_LINE_UP); | |
| 2018 setKeyBinding(SWT.ARROW_DOWN | SWT.MOD2, ST.SELECT_LINE_DOWN); | |
| 2019 if (IS_CARBON) { | |
| 2020 setKeyBinding(previousKey | SWT.MOD1 | SWT.MOD2, ST.SELECT_LINE_START); | |
| 2021 setKeyBinding(nextKey | SWT.MOD1 | SWT.MOD2, ST.SELECT_LINE_END); | |
| 2022 setKeyBinding(SWT.HOME | SWT.MOD2, ST.SELECT_TEXT_START); | |
| 2023 setKeyBinding(SWT.END | SWT.MOD2, ST.SELECT_TEXT_END); | |
| 2024 setKeyBinding(SWT.ARROW_UP | SWT.MOD1 | SWT.MOD2, ST.SELECT_TEXT_START); | |
| 2025 setKeyBinding(SWT.ARROW_DOWN | SWT.MOD1 | SWT.MOD2, ST.SELECT_TEXT_END); | |
| 2026 setKeyBinding(nextKey | SWT.MOD2 | SWT.MOD3, ST.SELECT_WORD_NEXT); | |
| 2027 setKeyBinding(previousKey | SWT.MOD2 | SWT.MOD3, ST.SELECT_WORD_PREVIOUS); | |
| 2028 } else { | |
| 2029 setKeyBinding(SWT.HOME | SWT.MOD2, ST.SELECT_LINE_START); | |
| 2030 setKeyBinding(SWT.END | SWT.MOD2, ST.SELECT_LINE_END); | |
| 2031 setKeyBinding(SWT.HOME | SWT.MOD1 | SWT.MOD2, ST.SELECT_TEXT_START); | |
| 2032 setKeyBinding(SWT.END | SWT.MOD1 | SWT.MOD2, ST.SELECT_TEXT_END); | |
| 2033 setKeyBinding(nextKey | SWT.MOD1 | SWT.MOD2, ST.SELECT_WORD_NEXT); | |
| 2034 setKeyBinding(previousKey | SWT.MOD1 | SWT.MOD2, ST.SELECT_WORD_PREVIOUS); | |
| 2035 } | |
| 2036 setKeyBinding(SWT.PAGE_UP | SWT.MOD2, ST.SELECT_PAGE_UP); | |
| 2037 setKeyBinding(SWT.PAGE_DOWN | SWT.MOD2, ST.SELECT_PAGE_DOWN); | |
| 2038 setKeyBinding(SWT.PAGE_UP | SWT.MOD1 | SWT.MOD2, ST.SELECT_WINDOW_START); | |
| 2039 setKeyBinding(SWT.PAGE_DOWN | SWT.MOD1 | SWT.MOD2, ST.SELECT_WINDOW_END); | |
| 2040 setKeyBinding(nextKey | SWT.MOD2, ST.SELECT_COLUMN_NEXT); | |
| 2041 setKeyBinding(previousKey | SWT.MOD2, ST.SELECT_COLUMN_PREVIOUS); | |
| 2042 | |
| 2043 // Modification | |
| 2044 // Cut, Copy, Paste | |
| 2045 setKeyBinding('X' | SWT.MOD1, ST.CUT); | |
| 2046 setKeyBinding('C' | SWT.MOD1, ST.COPY); | |
| 2047 setKeyBinding('V' | SWT.MOD1, ST.PASTE); | |
| 2048 if (IS_CARBON) { | |
| 2049 setKeyBinding(SWT.DEL | SWT.MOD2, ST.DELETE_NEXT); | |
| 2050 setKeyBinding(SWT.BS | SWT.MOD3, ST.DELETE_WORD_PREVIOUS); | |
| 2051 setKeyBinding(SWT.DEL | SWT.MOD3, ST.DELETE_WORD_NEXT); | |
| 2052 } else { | |
| 2053 // Cut, Copy, Paste Wordstar style | |
| 2054 setKeyBinding(SWT.DEL | SWT.MOD2, ST.CUT); | |
| 2055 setKeyBinding(SWT.INSERT | SWT.MOD1, ST.COPY); | |
| 2056 setKeyBinding(SWT.INSERT | SWT.MOD2, ST.PASTE); | |
| 2057 } | |
| 2058 setKeyBinding(SWT.BS | SWT.MOD2, ST.DELETE_PREVIOUS); | |
| 2059 setKeyBinding(SWT.BS, ST.DELETE_PREVIOUS); | |
| 2060 setKeyBinding(SWT.DEL, ST.DELETE_NEXT); | |
| 2061 setKeyBinding(SWT.BS | SWT.MOD1, ST.DELETE_WORD_PREVIOUS); | |
| 2062 setKeyBinding(SWT.DEL | SWT.MOD1, ST.DELETE_WORD_NEXT); | |
| 2063 | |
| 2064 // Miscellaneous | |
| 2065 setKeyBinding(SWT.INSERT, ST.TOGGLE_OVERWRITE); | |
| 2066 } | |
| 2067 /** | |
| 2068 * Create the bitmaps to use for the caret in bidi mode. This | |
| 2069 * method only needs to be called upon widget creation and when the | |
| 2070 * font changes (the caret bitmap height needs to match font height). | |
| 2071 */ | |
| 2072 void createCaretBitmaps() { | |
| 2073 int caretWidth = BIDI_CARET_WIDTH; | |
| 2074 Display display = getDisplay(); | |
| 2075 if (leftCaretBitmap !is null) { | |
| 2076 if (defaultCaret !is null && leftCaretBitmap==/*eq*/defaultCaret.getImage()) { | |
| 2077 defaultCaret.setImage(null); | |
| 2078 } | |
| 2079 leftCaretBitmap.dispose(); | |
| 2080 } | |
| 2081 int lineHeight = renderer.getLineHeight(); | |
| 2082 leftCaretBitmap = new Image(display, caretWidth, lineHeight); | |
| 2083 GC gc = new GC (leftCaretBitmap); | |
| 2084 gc.setBackground(display.getSystemColor(SWT.COLOR_BLACK)); | |
| 2085 gc.fillRectangle(0, 0, caretWidth, lineHeight); | |
| 2086 gc.setForeground(display.getSystemColor(SWT.COLOR_WHITE)); | |
| 2087 gc.drawLine(0,0,0,lineHeight); | |
| 2088 gc.drawLine(0,0,caretWidth-1,0); | |
| 2089 gc.drawLine(0,1,1,1); | |
| 2090 gc.dispose(); | |
| 2091 | |
| 2092 if (rightCaretBitmap !is null) { | |
| 2093 if (defaultCaret !is null && rightCaretBitmap==/*eq*/defaultCaret.getImage()) { | |
| 2094 defaultCaret.setImage(null); | |
| 2095 } | |
| 2096 rightCaretBitmap.dispose(); | |
| 2097 } | |
| 2098 rightCaretBitmap = new Image(display, caretWidth, lineHeight); | |
| 2099 gc = new GC (rightCaretBitmap); | |
| 2100 gc.setBackground(display.getSystemColor(SWT.COLOR_BLACK)); | |
| 2101 gc.fillRectangle(0, 0, caretWidth, lineHeight); | |
| 2102 gc.setForeground(display.getSystemColor(SWT.COLOR_WHITE)); | |
| 2103 gc.drawLine(caretWidth-1,0,caretWidth-1,lineHeight); | |
| 2104 gc.drawLine(0,0,caretWidth-1,0); | |
| 2105 gc.drawLine(caretWidth-1,1,1,1); | |
| 2106 gc.dispose(); | |
| 2107 } | |
| 2108 /** | |
| 2109 * Moves the selected text to the clipboard. The text will be put in the | |
| 2110 * clipboard in plain text format and RTF format. | |
| 2111 * | |
| 2112 * @exception SWTException <ul> | |
| 2113 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 2114 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 2115 * </ul> | |
| 2116 */ | |
| 2117 public void cut(){ | |
| 2118 checkWidget(); | |
| 2119 int length = selection.y - selection.x; | |
| 2120 if (length > 0) { | |
| 2121 try { | |
| 2122 setClipboardContent(selection.x, length, DND.CLIPBOARD); | |
| 2123 } catch (SWTError error) { | |
| 2124 // Copy to clipboard failed. This happens when another application | |
| 2125 // is accessing the clipboard while we copy. Ignore the error. | |
| 2126 // Fixes 1GDQAVN | |
| 2127 // Rethrow all other errors. Fixes bug 17578. | |
| 2128 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 2129 throw error; | |
| 2130 } | |
| 2131 // Abort cut operation if copy to clipboard fails. | |
| 2132 // Fixes bug 21030. | |
| 2133 return; | |
| 2134 } | |
| 2135 doDelete(); | |
| 2136 } | |
| 2137 } | |
| 2138 /** | |
| 2139 * A mouse move event has occurred. See if we should start autoscrolling. If | |
| 2140 * the move position is outside of the client area, initiate autoscrolling. | |
| 2141 * Otherwise, we've moved back into the widget so end autoscrolling. | |
| 2142 */ | |
| 2143 void doAutoScroll(Event event) { | |
| 2144 if (event.y > clientAreaHeight) { | |
| 2145 doAutoScroll(SWT.DOWN, event.y - clientAreaHeight); | |
| 2146 } else if (event.y < 0) { | |
| 2147 doAutoScroll(SWT.UP, -event.y); | |
| 2148 } else if (event.x < leftMargin && !wordWrap) { | |
| 2149 doAutoScroll(ST.COLUMN_PREVIOUS, leftMargin - event.x); | |
| 2150 } else if (event.x > clientAreaWidth - leftMargin - rightMargin && !wordWrap) { | |
| 2151 doAutoScroll(ST.COLUMN_NEXT, event.x - (clientAreaWidth - leftMargin - rightMargin)); | |
| 2152 } else { | |
| 2153 endAutoScroll(); | |
| 2154 } | |
| 2155 } | |
| 2156 /** | |
| 2157 * Initiates autoscrolling. | |
| 2158 * | |
| 2159 * @param direction SWT.UP, SWT.DOWN, SWT.COLUMN_NEXT, SWT.COLUMN_PREVIOUS | |
| 2160 */ | |
| 2161 void doAutoScroll(int direction, int distance) { | |
| 2162 autoScrollDistance = distance; | |
| 2163 // If we're already autoscrolling in the given direction do nothing | |
| 2164 if (autoScrollDirection is direction) { | |
| 2165 return; | |
| 2166 } | |
| 2167 | |
| 2168 Runnable timer = null; | |
|
49
7a2dd761a8b2
more work until dmd 2.026 linux segfaults.
Frank Benoit <benoit@tionex.de>
parents:
48
diff
changeset
|
2169 Display disp = getDisplay(); |
| 25 | 2170 // Set a timer that will simulate the user pressing and holding |
| 2171 // down a cursor key (i.e., arrowUp, arrowDown). | |
| 2172 if (direction is SWT.UP) { | |
| 2173 timer = new class(disp) Runnable { | |
| 2174 Display display; | |
| 2175 this( Display d ){ this.display = d; } | |
| 2176 public void run() { | |
| 2177 if (autoScrollDirection is SWT.UP) { | |
| 2178 doSelectionPageUp(autoScrollDistance); | |
| 2179 display.timerExec(V_SCROLL_RATE, this); | |
| 2180 } | |
| 2181 } | |
| 2182 }; | |
| 2183 autoScrollDirection = direction; | |
| 2184 display.timerExec(V_SCROLL_RATE, timer); | |
| 2185 } else if (direction is SWT.DOWN) { | |
| 2186 timer = new class(disp) Runnable { | |
| 2187 Display display; | |
| 2188 this( Display d ){ this.display = d; } | |
| 2189 public void run() { | |
| 2190 if (autoScrollDirection is SWT.DOWN) { | |
| 2191 doSelectionPageDown(autoScrollDistance); | |
| 2192 display.timerExec(V_SCROLL_RATE, this); | |
| 2193 } | |
| 2194 } | |
| 2195 }; | |
| 2196 autoScrollDirection = direction; | |
| 2197 display.timerExec(V_SCROLL_RATE, timer); | |
| 2198 } else if (direction is ST.COLUMN_NEXT) { | |
| 2199 timer = new class(disp) Runnable { | |
| 2200 Display display; | |
| 2201 this( Display d ){ this.display = d; } | |
| 2202 public void run() { | |
| 2203 if (autoScrollDirection is ST.COLUMN_NEXT) { | |
| 2204 doVisualNext(); | |
| 2205 setMouseWordSelectionAnchor(); | |
| 2206 doMouseSelection(); | |
| 2207 display.timerExec(H_SCROLL_RATE, this); | |
| 2208 } | |
| 2209 } | |
| 2210 }; | |
| 2211 autoScrollDirection = direction; | |
| 2212 display.timerExec(H_SCROLL_RATE, timer); | |
| 2213 } else if (direction is ST.COLUMN_PREVIOUS) { | |
| 2214 timer = new class(disp) Runnable { | |
| 2215 Display display; | |
| 2216 this( Display d ){ this.display = d; } | |
| 2217 public void run() { | |
| 2218 if (autoScrollDirection is ST.COLUMN_PREVIOUS) { | |
| 2219 doVisualPrevious(); | |
| 2220 setMouseWordSelectionAnchor(); | |
| 2221 doMouseSelection(); | |
| 2222 display.timerExec(H_SCROLL_RATE, this); | |
| 2223 } | |
| 2224 } | |
| 2225 }; | |
| 2226 autoScrollDirection = direction; | |
| 2227 display.timerExec(H_SCROLL_RATE, timer); | |
| 2228 } | |
| 2229 } | |
| 2230 /** | |
| 2231 * Deletes the previous character. Delete the selected text if any. | |
| 2232 * Move the caret in front of the deleted text. | |
| 2233 */ | |
| 2234 void doBackspace() { | |
| 2235 Event event = new Event(); | |
| 2236 event.text = ""; | |
| 2237 if (selection.x !is selection.y) { | |
| 2238 event.start = selection.x; | |
| 2239 event.end = selection.y; | |
| 2240 sendKeyEvent(event); | |
| 2241 } else if (caretOffset > 0) { | |
| 2242 int lineIndex = content.getLineAtOffset(caretOffset); | |
| 2243 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 2244 if (caretOffset is lineOffset) { | |
| 2245 // SWT: on line start, delete line break | |
| 2246 lineOffset = content.getOffsetAtLine(lineIndex - 1); | |
| 2247 event.start = lineOffset + content.getLine(lineIndex - 1).length; | |
| 2248 event.end = caretOffset; | |
| 2249 } else { | |
| 2250 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2251 int start = layout.getPreviousOffset(caretOffset - lineOffset, SWT.MOVEMENT_CLUSTER); | |
| 2252 renderer.disposeTextLayout(layout); | |
| 2253 event.start = start + lineOffset; | |
| 2254 event.end = caretOffset; | |
| 2255 } | |
| 2256 sendKeyEvent(event); | |
| 2257 } | |
| 2258 } | |
| 2259 /** | |
| 2260 * Replaces the selection with the character or insert the character at the | |
| 2261 * current caret position if no selection exists. | |
| 2262 * <p> | |
| 2263 * If a carriage return was typed replace it with the line break character | |
| 2264 * used by the widget on this platform. | |
| 2265 * </p> | |
| 2266 * | |
| 2267 * @param key the character typed by the user | |
| 2268 */ | |
| 2269 void doContent(dchar key) { | |
| 2270 Event event = new Event(); | |
| 2271 event.start = selection.x; | |
| 2272 event.end = selection.y; | |
| 2273 // replace a CR line break with the widget line break | |
| 2274 // CR does not make sense on Windows since most (all?) applications | |
| 2275 // don't recognize CR as a line break. | |
| 2276 if (key is SWT.CR || key is SWT.LF) { | |
| 2277 if (!isSingleLine()) { | |
| 2278 event.text = getLineDelimiter(); | |
| 2279 } | |
| 2280 } else if (selection.x is selection.y && overwrite && key !is TAB) { | |
| 2281 // no selection and overwrite mode is on and the typed key is not a | |
| 2282 // tab character (tabs are always inserted without overwriting)? | |
| 2283 int lineIndex = content.getLineAtOffset(event.end); | |
| 2284 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 2285 String line = content.getLine(lineIndex); | |
| 2286 // replace character at caret offset if the caret is not at the | |
| 2287 // end of the line | |
| 2288 if (event.end < lineOffset + line.length) { | |
| 2289 event.end+=dcharToString( key ).length; | |
| 2290 } | |
| 2291 event.text = dcharToString( key ); | |
| 2292 } else { | |
| 2293 event.text = dcharToString( key ); | |
| 2294 } | |
| 2295 if (event.text !is null) { | |
| 2296 if (textLimit > 0 && content.getCharCount() - (event.end - event.start) >= textLimit) { | |
| 2297 return; | |
| 2298 } | |
| 2299 sendKeyEvent(event); | |
| 2300 } | |
| 2301 } | |
| 2302 /** | |
| 2303 * Moves the caret after the last character of the widget content. | |
| 2304 */ | |
| 2305 void doContentEnd() { | |
| 2306 // place caret at end of first line if receiver is in single | |
| 2307 // line mode. fixes 4820. | |
| 2308 if (isSingleLine()) { | |
| 2309 doLineEnd(); | |
| 2310 } else { | |
| 2311 int length = content.getCharCount(); | |
| 2312 if (caretOffset < length) { | |
| 2313 caretOffset = length; | |
| 2314 showCaret(); | |
| 2315 } | |
| 2316 } | |
| 2317 } | |
| 2318 /** | |
| 2319 * Moves the caret in front of the first character of the widget content. | |
| 2320 */ | |
| 2321 void doContentStart() { | |
| 2322 if (caretOffset > 0) { | |
| 2323 caretOffset = 0; | |
| 2324 showCaret(); | |
| 2325 } | |
| 2326 } | |
| 2327 /** | |
| 2328 * Moves the caret to the start of the selection if a selection exists. | |
| 2329 * Otherwise, if no selection exists move the cursor according to the | |
| 2330 * cursor selection rules. | |
| 2331 * | |
| 2332 * @see #doSelectionCursorPrevious | |
| 2333 */ | |
| 2334 void doCursorPrevious() { | |
| 2335 if (selection.y - selection.x > 0) { | |
| 2336 caretOffset = selection.x; | |
| 2337 caretAlignment = OFFSET_LEADING; | |
| 2338 showCaret(); | |
| 2339 } else { | |
| 2340 doSelectionCursorPrevious(); | |
| 2341 } | |
| 2342 } | |
| 2343 /** | |
| 2344 * Moves the caret to the end of the selection if a selection exists. | |
| 2345 * Otherwise, if no selection exists move the cursor according to the | |
| 2346 * cursor selection rules. | |
| 2347 * | |
| 2348 * @see #doSelectionCursorNext | |
| 2349 */ | |
| 2350 void doCursorNext() { | |
| 2351 if (selection.y - selection.x > 0) { | |
| 2352 caretOffset = selection.y; | |
| 2353 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 2354 showCaret(); | |
| 2355 } else { | |
| 2356 doSelectionCursorNext(); | |
| 2357 } | |
| 2358 } | |
| 2359 /** | |
| 2360 * Deletes the next character. Delete the selected text if any. | |
| 2361 */ | |
| 2362 void doDelete() { | |
| 2363 Event event = new Event(); | |
| 2364 event.text = ""; | |
| 2365 if (selection.x !is selection.y) { | |
| 2366 event.start = selection.x; | |
| 2367 event.end = selection.y; | |
| 2368 sendKeyEvent(event); | |
| 2369 } else if (caretOffset < content.getCharCount()) { | |
| 2370 int line = content.getLineAtOffset(caretOffset); | |
| 2371 int lineOffset = content.getOffsetAtLine(line); | |
| 2372 int lineLength = content.getLine(line).length; | |
| 2373 if (caretOffset is lineOffset + lineLength) { | |
| 2374 event.start = caretOffset; | |
| 2375 event.end = content.getOffsetAtLine(line + 1); | |
| 2376 } else { | |
| 2377 event.start = caretOffset; | |
| 2378 event.end = getClusterNext(caretOffset, line); | |
| 2379 } | |
| 2380 sendKeyEvent(event); | |
| 2381 } | |
| 2382 } | |
| 2383 /** | |
| 2384 * Deletes the next word. | |
| 2385 */ | |
| 2386 void doDeleteWordNext() { | |
| 2387 if (selection.x !is selection.y) { | |
| 2388 // if a selection exists, treat the as if | |
| 2389 // only the delete key was pressed | |
| 2390 doDelete(); | |
| 2391 } else { | |
| 2392 Event event = new Event(); | |
| 2393 event.text = ""; | |
| 2394 event.start = caretOffset; | |
| 2395 event.end = getWordNext(caretOffset, SWT.MOVEMENT_WORD); | |
| 2396 sendKeyEvent(event); | |
| 2397 } | |
| 2398 } | |
| 2399 /** | |
| 2400 * Deletes the previous word. | |
| 2401 */ | |
| 2402 void doDeleteWordPrevious() { | |
| 2403 if (selection.x !is selection.y) { | |
| 2404 // if a selection exists, treat as if | |
| 2405 // only the backspace key was pressed | |
| 2406 doBackspace(); | |
| 2407 } else { | |
| 2408 Event event = new Event(); | |
| 2409 event.text = ""; | |
| 2410 event.start = getWordPrevious(caretOffset, SWT.MOVEMENT_WORD); | |
| 2411 event.end = caretOffset; | |
| 2412 sendKeyEvent(event); | |
| 2413 } | |
| 2414 } | |
| 2415 /** | |
| 2416 * Moves the caret one line down and to the same character offset relative | |
| 2417 * to the beginning of the line. Move the caret to the end of the new line | |
| 2418 * if the new line is shorter than the character offset. | |
| 2419 */ | |
| 2420 void doLineDown(bool select) { | |
| 2421 int caretLine = getCaretLine(); | |
| 2422 int lineCount = content.getLineCount(); | |
| 2423 int y = 0; | |
| 2424 bool lastLine = false; | |
| 2425 if (wordWrap) { | |
| 2426 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2427 int offsetInLine = caretOffset - lineOffset; | |
| 2428 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2429 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2430 int layoutLineCount = layout.getLineCount(); | |
| 2431 if (lineIndex is layoutLineCount - 1) { | |
| 2432 lastLine = caretLine is lineCount - 1; | |
| 2433 caretLine++; | |
| 2434 } else { | |
| 2435 y = layout.getLineBounds(lineIndex + 1).y; | |
| 2436 } | |
| 2437 renderer.disposeTextLayout(layout); | |
| 2438 } else { | |
| 2439 lastLine = caretLine is lineCount - 1; | |
| 2440 caretLine++; | |
| 2441 } | |
| 2442 if (lastLine) { | |
| 2443 if (select) caretOffset = content.getCharCount(); | |
| 2444 } else { | |
| 2445 caretOffset = getOffsetAtPoint(columnX, y, caretLine); | |
| 2446 } | |
| 2447 int oldColumnX = columnX; | |
| 2448 int oldHScrollOffset = horizontalScrollOffset; | |
| 2449 if (select) { | |
| 2450 setMouseWordSelectionAnchor(); | |
| 2451 // select first and then scroll to reduce flash when key | |
| 2452 // repeat scrolls lots of lines | |
| 2453 doSelection(ST.COLUMN_NEXT); | |
| 2454 } | |
| 2455 showCaret(); | |
| 2456 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2457 columnX = oldColumnX + hScrollChange; | |
| 2458 } | |
| 2459 /** | |
| 2460 * Moves the caret to the end of the line. | |
| 2461 */ | |
| 2462 void doLineEnd() { | |
| 2463 int caretLine = getCaretLine(); | |
| 2464 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2465 int lineEndOffset; | |
| 2466 if (wordWrap) { | |
| 2467 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2468 int offsetInLine = caretOffset - lineOffset; | |
| 2469 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2470 int[] offsets = layout.getLineOffsets(); | |
| 2471 lineEndOffset = lineOffset + offsets[lineIndex + 1]; | |
| 2472 renderer.disposeTextLayout(layout); | |
| 2473 } else { | |
| 2474 int lineLength = content.getLine(caretLine).length; | |
| 2475 lineEndOffset = lineOffset + lineLength; | |
| 2476 } | |
| 2477 if (caretOffset < lineEndOffset) { | |
| 2478 caretOffset = lineEndOffset; | |
| 2479 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 2480 showCaret(); | |
| 2481 } | |
| 2482 } | |
| 2483 /** | |
| 2484 * Moves the caret to the beginning of the line. | |
| 2485 */ | |
| 2486 void doLineStart() { | |
| 2487 int caretLine = getCaretLine(); | |
| 2488 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2489 if (wordWrap) { | |
| 2490 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2491 int offsetInLine = caretOffset - lineOffset; | |
| 2492 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2493 int[] offsets = layout.getLineOffsets(); | |
| 2494 lineOffset += offsets[lineIndex]; | |
| 2495 renderer.disposeTextLayout(layout); | |
| 2496 } | |
| 2497 if (caretOffset > lineOffset) { | |
| 2498 caretOffset = lineOffset; | |
| 2499 caretAlignment = OFFSET_LEADING; | |
| 2500 showCaret(); | |
| 2501 } | |
| 2502 } | |
| 2503 /** | |
| 2504 * Moves the caret one line up and to the same character offset relative | |
| 2505 * to the beginning of the line. Move the caret to the end of the new line | |
| 2506 * if the new line is shorter than the character offset. | |
| 2507 */ | |
| 2508 void doLineUp(bool select) { | |
| 2509 int caretLine = getCaretLine(), y = 0; | |
| 2510 bool firstLine = false; | |
| 2511 if (wordWrap) { | |
| 2512 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2513 int offsetInLine = caretOffset - lineOffset; | |
| 2514 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2515 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2516 if (lineIndex is 0) { | |
| 2517 firstLine = caretLine is 0; | |
| 2518 if (!firstLine) { | |
| 2519 caretLine--; | |
| 2520 y = renderer.getLineHeight(caretLine) - 1; | |
| 2521 } | |
| 2522 } else { | |
| 2523 y = layout.getLineBounds(lineIndex - 1).y; | |
| 2524 } | |
| 2525 renderer.disposeTextLayout(layout); | |
| 2526 } else { | |
| 2527 firstLine = caretLine is 0; | |
| 2528 caretLine--; | |
| 2529 } | |
| 2530 if (firstLine) { | |
| 2531 if (select) caretOffset = 0; | |
| 2532 } else { | |
| 2533 caretOffset = getOffsetAtPoint(columnX, y, caretLine); | |
| 2534 } | |
| 2535 int oldColumnX = columnX; | |
| 2536 int oldHScrollOffset = horizontalScrollOffset; | |
| 2537 if (select) setMouseWordSelectionAnchor(); | |
| 2538 showCaret(); | |
| 2539 if (select) doSelection(ST.COLUMN_PREVIOUS); | |
| 2540 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2541 columnX = oldColumnX + hScrollChange; | |
| 2542 } | |
| 2543 /** | |
| 2544 * Moves the caret to the specified location. | |
| 2545 * | |
| 2546 * @param x x location of the new caret position | |
| 2547 * @param y y location of the new caret position | |
| 2548 * @param select the location change is a selection operation. | |
| 2549 * include the line delimiter in the selection | |
| 2550 */ | |
| 2551 void doMouseLocationChange(int x, int y, bool select) { | |
| 2552 int line = getLineIndex(y); | |
| 2553 | |
| 2554 updateCaretDirection = true; | |
| 2555 // allow caret to be placed below first line only if receiver is | |
| 2556 // not in single line mode. fixes 4820. | |
| 2557 if (line < 0 || (isSingleLine() && line > 0)) { | |
| 2558 return; | |
| 2559 } | |
| 2560 int oldCaretAlignment = caretAlignment; | |
| 2561 int newCaretOffset = getOffsetAtPoint(x, y); | |
| 2562 | |
| 2563 if (doubleClickEnabled && clickCount > 1) { | |
| 2564 newCaretOffset = doMouseWordSelect(x, newCaretOffset, line); | |
| 2565 } | |
| 2566 | |
| 2567 int newCaretLine = content.getLineAtOffset(newCaretOffset); | |
| 2568 | |
| 2569 // Is the mouse within the left client area border or on | |
| 2570 // a different line? If not the autoscroll selection | |
| 2571 // could be incorrectly reset. Fixes 1GKM3XS | |
| 2572 if (0 <= y && y < clientAreaHeight && | |
| 2573 (0 <= x && x < clientAreaWidth || wordWrap || | |
| 2574 newCaretLine !is content.getLineAtOffset(caretOffset))) { | |
| 2575 if (newCaretOffset !is caretOffset || caretAlignment !is oldCaretAlignment) { | |
| 2576 caretOffset = newCaretOffset; | |
| 2577 if (select) doMouseSelection(); | |
| 2578 showCaret(); | |
| 2579 } | |
| 2580 } | |
| 2581 if (!select) { | |
| 2582 caretOffset = newCaretOffset; | |
| 2583 clearSelection(true); | |
| 2584 } | |
| 2585 } | |
| 2586 /** | |
| 2587 * Updates the selection based on the caret position | |
| 2588 */ | |
| 2589 void doMouseSelection() { | |
| 2590 if (caretOffset <= selection.x || | |
| 2591 (caretOffset > selection.x && | |
| 2592 caretOffset < selection.y && selectionAnchor is selection.x)) { | |
| 2593 doSelection(ST.COLUMN_PREVIOUS); | |
| 2594 } else { | |
| 2595 doSelection(ST.COLUMN_NEXT); | |
| 2596 } | |
| 2597 } | |
| 2598 /** | |
| 2599 * Returns the offset of the word at the specified offset. | |
| 2600 * If the current selection extends from high index to low index | |
| 2601 * (i.e., right to left, or caret is at left border of selection on | |
| 2602 * non-bidi platforms) the start offset of the word preceding the | |
| 2603 * selection is returned. If the current selection extends from | |
| 2604 * low index to high index the end offset of the word following | |
| 2605 * the selection is returned. | |
| 2606 * | |
| 2607 * @param x mouse x location | |
| 2608 * @param newCaretOffset caret offset of the mouse cursor location | |
| 2609 * @param line line index of the mouse cursor location | |
| 2610 */ | |
| 2611 int doMouseWordSelect(int x, int newCaretOffset, int line) { | |
| 2612 // flip selection anchor based on word selection direction from | |
| 2613 // base double click. Always do this here (and don't rely on doAutoScroll) | |
| 2614 // because auto scroll only does not cover all possible mouse selections | |
| 2615 // (e.g., mouse x < 0 && mouse y > caret line y) | |
| 2616 if (newCaretOffset < selectionAnchor && selectionAnchor is selection.x) { | |
| 2617 selectionAnchor = doubleClickSelection.y; | |
| 2618 } else if (newCaretOffset > selectionAnchor && selectionAnchor is selection.y) { | |
| 2619 selectionAnchor = doubleClickSelection.x; | |
| 2620 } | |
| 2621 if (0 <= x && x < clientAreaWidth) { | |
| 2622 bool wordSelect = (clickCount & 1) is 0; | |
| 2623 if (caretOffset is selection.x) { | |
| 2624 if (wordSelect) { | |
| 2625 newCaretOffset = getWordPrevious(newCaretOffset, SWT.MOVEMENT_WORD_START); | |
| 2626 } else { | |
| 2627 newCaretOffset = content.getOffsetAtLine(line); | |
| 2628 } | |
| 2629 } else { | |
| 2630 if (wordSelect) { | |
| 2631 newCaretOffset = getWordNext(newCaretOffset, SWT.MOVEMENT_WORD_END); | |
| 2632 } else { | |
| 2633 int lineEnd = content.getCharCount(); | |
| 2634 if (line + 1 < content.getLineCount()) { | |
| 2635 lineEnd = content.getOffsetAtLine(line + 1); | |
| 2636 } | |
| 2637 newCaretOffset = lineEnd; | |
| 2638 } | |
| 2639 } | |
| 2640 } | |
| 2641 return newCaretOffset; | |
| 2642 } | |
| 2643 /** | |
| 2644 * Scrolls one page down so that the last line (truncated or whole) | |
| 2645 * of the current page becomes the fully visible top line. | |
| 2646 * <p> | |
| 2647 * The caret is scrolled the same number of lines so that its location | |
| 2648 * relative to the top line remains the same. The exception is the end | |
| 2649 * of the text where a full page scroll is not possible. In this case | |
| 2650 * the caret is moved after the last character. | |
| 2651 * </p> | |
| 2652 * | |
| 2653 * @param select whether or not to select the page | |
| 2654 */ | |
| 2655 void doPageDown(bool select, int height) { | |
| 2656 if (isSingleLine()) return; | |
| 2657 int oldColumnX = columnX; | |
| 2658 int oldHScrollOffset = horizontalScrollOffset; | |
| 2659 if (isFixedLineHeight()) { | |
| 2660 int lineCount = content.getLineCount(); | |
| 2661 int caretLine = getCaretLine(); | |
| 2662 if (caretLine < lineCount - 1) { | |
| 2663 int lineHeight = renderer.getLineHeight(); | |
| 2664 int lines = (height is -1 ? clientAreaHeight : height) / lineHeight; | |
| 2665 int scrollLines = Math.min(lineCount - caretLine - 1, lines); | |
| 2666 // ensure that scrollLines never gets negative and at least one | |
| 2667 // line is scrolled. fixes bug 5602. | |
| 2668 scrollLines = Math.max(1, scrollLines); | |
| 2669 caretOffset = getOffsetAtPoint(columnX, getLinePixel(caretLine + scrollLines)); | |
| 2670 if (select) { | |
| 2671 doSelection(ST.COLUMN_NEXT); | |
| 2672 } | |
| 2673 // scroll one page down or to the bottom | |
| 2674 int verticalMaximum = lineCount * getVerticalIncrement(); | |
| 2675 int pageSize = clientAreaHeight; | |
| 2676 int verticalScrollOffset = getVerticalScrollOffset(); | |
| 2677 int scrollOffset = verticalScrollOffset + scrollLines * getVerticalIncrement(); | |
| 2678 if (scrollOffset + pageSize > verticalMaximum) { | |
| 2679 scrollOffset = verticalMaximum - pageSize; | |
| 2680 } | |
| 2681 if (scrollOffset > verticalScrollOffset) { | |
| 2682 scrollVertical(scrollOffset - verticalScrollOffset, true); | |
| 2683 } | |
| 2684 } | |
| 2685 } else { | |
| 2686 int lineCount = content.getLineCount(); | |
| 2687 int caretLine = getCaretLine(); | |
| 2688 int lineIndex, lineHeight; | |
| 2689 if (height is -1) { | |
| 2690 lineIndex = getPartialBottomIndex(); | |
| 2691 int topY = getLinePixel(lineIndex); | |
| 2692 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2693 height = topY; | |
| 2694 if (topY + lineHeight <= clientAreaHeight) { | |
| 2695 height += lineHeight; | |
| 2696 } else { | |
| 2697 if (wordWrap) { | |
| 2698 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2699 int y = clientAreaHeight - topY; | |
| 2700 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2701 Rectangle bounds = layout.getLineBounds(i); | |
| 2702 if (bounds.contains(bounds.x, y)) { | |
| 2703 height += bounds.y; | |
| 2704 break; | |
| 2705 } | |
| 2706 } | |
| 2707 renderer.disposeTextLayout(layout); | |
| 2708 } | |
| 2709 } | |
| 2710 } else { | |
| 2711 lineIndex = getLineIndex(height); | |
| 2712 int topLineY = getLinePixel(lineIndex); | |
| 2713 if (wordWrap) { | |
| 2714 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2715 int y = height - topLineY; | |
| 2716 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2717 Rectangle bounds = layout.getLineBounds(i); | |
| 2718 if (bounds.contains(bounds.x, y)) { | |
| 2719 height = topLineY + bounds.y + bounds.height; | |
| 2720 break; | |
| 2721 } | |
| 2722 } | |
| 2723 renderer.disposeTextLayout(layout); | |
| 2724 } else { | |
| 2725 height = topLineY + renderer.getLineHeight(lineIndex); | |
| 2726 } | |
| 2727 } | |
| 2728 int caretHeight = height; | |
| 2729 if (wordWrap) { | |
| 2730 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2731 int offsetInLine = caretOffset - content.getOffsetAtLine(caretLine); | |
| 2732 lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2733 caretHeight += layout.getLineBounds(lineIndex).y; | |
| 2734 renderer.disposeTextLayout(layout); | |
| 2735 } | |
| 2736 lineIndex = caretLine; | |
| 2737 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2738 while (caretHeight - lineHeight >= 0 && lineIndex < lineCount - 1) { | |
| 2739 caretHeight -= lineHeight; | |
| 2740 lineHeight = renderer.getLineHeight(++lineIndex); | |
| 2741 } | |
| 2742 caretOffset = getOffsetAtPoint(columnX, caretHeight, lineIndex); | |
| 2743 if (select) doSelection(ST.COLUMN_NEXT); | |
| 2744 height = getAvailableHeightBellow(height); | |
| 2745 scrollVertical(height, true); | |
| 2746 if (height is 0) setCaretLocation(); | |
| 2747 } | |
| 2748 showCaret(); | |
| 2749 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2750 columnX = oldColumnX + hScrollChange; | |
| 2751 } | |
| 2752 /** | |
| 2753 * Moves the cursor to the end of the last fully visible line. | |
| 2754 */ | |
| 2755 void doPageEnd() { | |
| 2756 // go to end of line if in single line mode. fixes 5673 | |
| 2757 if (isSingleLine()) { | |
| 2758 doLineEnd(); | |
| 2759 } else { | |
| 2760 int bottomOffset; | |
| 2761 if (wordWrap) { | |
| 2762 int lineIndex = getPartialBottomIndex(); | |
| 2763 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2764 int y = (clientAreaHeight - bottomMargin) - getLinePixel(lineIndex); | |
| 2765 int index = layout.getLineCount() - 1; | |
| 2766 while (index >= 0) { | |
| 2767 Rectangle bounds = layout.getLineBounds(index); | |
| 2768 if (y >= bounds.y + bounds.height) break; | |
| 2769 index--; | |
| 2770 } | |
| 2771 if (index is -1 && lineIndex > 0) { | |
| 2772 bottomOffset = content.getOffsetAtLine(lineIndex - 1) + content.getLine(lineIndex - 1).length; | |
| 2773 } else { | |
| 2774 bottomOffset = content.getOffsetAtLine(lineIndex) + Math.max(0, layout.getLineOffsets()[index + 1] - 1); | |
| 2775 } | |
| 2776 renderer.disposeTextLayout(layout); | |
| 2777 } else { | |
| 2778 int lineIndex = getBottomIndex(); | |
| 2779 bottomOffset = content.getOffsetAtLine(lineIndex) + content.getLine(lineIndex).length; | |
| 2780 } | |
| 2781 if (caretOffset < bottomOffset) { | |
| 2782 caretOffset = bottomOffset; | |
| 2783 caretAlignment = OFFSET_LEADING; | |
| 2784 showCaret(); | |
| 2785 } | |
| 2786 } | |
| 2787 } | |
| 2788 /** | |
| 2789 * Moves the cursor to the beginning of the first fully visible line. | |
| 2790 */ | |
| 2791 void doPageStart() { | |
| 2792 int topOffset; | |
| 2793 if (wordWrap) { | |
| 2794 int y, lineIndex; | |
| 2795 if (topIndexY > 0) { | |
| 2796 lineIndex = topIndex - 1; | |
| 2797 y = renderer.getLineHeight(lineIndex) - topIndexY; | |
| 2798 } else { | |
| 2799 lineIndex = topIndex; | |
| 2800 y = -topIndexY; | |
| 2801 } | |
| 2802 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2803 int index = 0; | |
| 2804 int lineCount = layout.getLineCount(); | |
| 2805 while (index < lineCount) { | |
| 2806 Rectangle bounds = layout.getLineBounds(index); | |
| 2807 if (y <= bounds.y) break; | |
| 2808 index++; | |
| 2809 } | |
| 2810 if (index is lineCount) { | |
| 2811 topOffset = content.getOffsetAtLine(lineIndex + 1); | |
| 2812 } else { | |
| 2813 topOffset = content.getOffsetAtLine(lineIndex) + layout.getLineOffsets()[index]; | |
| 2814 } | |
| 2815 renderer.disposeTextLayout(layout); | |
| 2816 } else { | |
| 2817 topOffset = content.getOffsetAtLine(topIndex); | |
| 2818 } | |
| 2819 if (caretOffset > topOffset) { | |
| 2820 caretOffset = topOffset; | |
| 2821 caretAlignment = OFFSET_LEADING; | |
| 2822 showCaret(); | |
| 2823 } | |
| 2824 } | |
| 2825 /** | |
| 2826 * Scrolls one page up so that the first line (truncated or whole) | |
| 2827 * of the current page becomes the fully visible last line. | |
| 2828 * The caret is scrolled the same number of lines so that its location | |
| 2829 * relative to the top line remains the same. The exception is the beginning | |
| 2830 * of the text where a full page scroll is not possible. In this case the | |
| 2831 * caret is moved in front of the first character. | |
| 2832 */ | |
| 2833 void doPageUp(bool select, int height) { | |
| 2834 if (isSingleLine()) return; | |
| 2835 int oldHScrollOffset = horizontalScrollOffset; | |
| 2836 int oldColumnX = columnX; | |
| 2837 if (isFixedLineHeight()) { | |
| 2838 int caretLine = getCaretLine(); | |
| 2839 if (caretLine > 0) { | |
| 2840 int lineHeight = renderer.getLineHeight(); | |
| 2841 int lines = (height is -1 ? clientAreaHeight : height) / lineHeight; | |
| 2842 int scrollLines = Math.max(1, Math.min(caretLine, lines)); | |
| 2843 caretLine -= scrollLines; | |
| 2844 caretOffset = getOffsetAtPoint(columnX, getLinePixel(caretLine)); | |
| 2845 if (select) { | |
| 2846 doSelection(ST.COLUMN_PREVIOUS); | |
| 2847 } | |
| 2848 int verticalScrollOffset = getVerticalScrollOffset(); | |
| 2849 int scrollOffset = Math.max(0, verticalScrollOffset - scrollLines * getVerticalIncrement()); | |
| 2850 if (scrollOffset < verticalScrollOffset) { | |
| 2851 scrollVertical(scrollOffset - verticalScrollOffset, true); | |
| 2852 } | |
| 2853 } | |
| 2854 } else { | |
| 2855 int caretLine = getCaretLine(); | |
| 2856 int lineHeight, lineIndex; | |
| 2857 if (height is -1) { | |
| 2858 if (topIndexY is 0) { | |
| 2859 height = clientAreaHeight; | |
| 2860 } else { | |
| 2861 int y; | |
| 2862 if (topIndex > 0) { | |
| 2863 lineIndex = topIndex - 1; | |
| 2864 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2865 height = clientAreaHeight - topIndexY; | |
| 2866 y = lineHeight - topIndexY; | |
| 2867 } else { | |
| 2868 lineIndex = topIndex; | |
| 2869 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2870 height = clientAreaHeight - (lineHeight + topIndexY); | |
| 2871 y = -topIndexY; | |
| 2872 } | |
| 2873 if (wordWrap) { | |
| 2874 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2875 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2876 Rectangle bounds = layout.getLineBounds(i); | |
| 2877 if (bounds.contains(bounds.x, y)) { | |
| 2878 height += lineHeight - (bounds.y + bounds.height); | |
| 2879 break; | |
| 2880 } | |
| 2881 } | |
| 2882 renderer.disposeTextLayout(layout); | |
| 2883 } | |
| 2884 } | |
| 2885 } else { | |
| 2886 lineIndex = getLineIndex(clientAreaHeight - height); | |
| 2887 int topLineY = getLinePixel(lineIndex); | |
| 2888 if (wordWrap) { | |
| 2889 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2890 int y = topLineY; | |
| 2891 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2892 Rectangle bounds = layout.getLineBounds(i); | |
| 2893 if (bounds.contains(bounds.x, y)) { | |
| 2894 height = clientAreaHeight - (topLineY + bounds.y); | |
| 2895 break; | |
| 2896 } | |
| 2897 } | |
| 2898 renderer.disposeTextLayout(layout); | |
| 2899 } else { | |
| 2900 height = clientAreaHeight - topLineY; | |
| 2901 } | |
| 2902 } | |
| 2903 int caretHeight = height; | |
| 2904 if (wordWrap) { | |
| 2905 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2906 int offsetInLine = caretOffset - content.getOffsetAtLine(caretLine); | |
| 2907 lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2908 caretHeight += layout.getBounds().height - layout.getLineBounds(lineIndex).y; | |
| 2909 renderer.disposeTextLayout(layout); | |
| 2910 } | |
| 2911 lineIndex = caretLine; | |
| 2912 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2913 while (caretHeight - lineHeight >= 0 && lineIndex > 0) { | |
| 2914 caretHeight -= lineHeight; | |
| 2915 lineHeight = renderer.getLineHeight(--lineIndex); | |
| 2916 } | |
| 2917 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2918 caretOffset = getOffsetAtPoint(columnX, lineHeight - caretHeight, lineIndex); | |
| 2919 if (select) doSelection(ST.COLUMN_PREVIOUS); | |
| 2920 height = getAvailableHeightAbove(height); | |
| 2921 scrollVertical(-height, true); | |
| 2922 if (height is 0) setCaretLocation(); | |
| 2923 } | |
| 2924 showCaret(); | |
| 2925 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2926 columnX = oldColumnX + hScrollChange; | |
| 2927 } | |
| 2928 /** | |
| 2929 * Updates the selection to extend to the current caret position. | |
| 2930 */ | |
| 2931 void doSelection(int direction) { | |
| 2932 int redrawStart = -1; | |
| 2933 int redrawEnd = -1; | |
| 2934 if (selectionAnchor is -1) { | |
| 2935 selectionAnchor = selection.x; | |
| 2936 } | |
| 2937 if (direction is ST.COLUMN_PREVIOUS) { | |
| 2938 if (caretOffset < selection.x) { | |
| 2939 // grow selection | |
| 2940 redrawEnd = selection.x; | |
| 2941 redrawStart = selection.x = caretOffset; | |
| 2942 // check if selection has reversed direction | |
| 2943 if (selection.y !is selectionAnchor) { | |
| 2944 redrawEnd = selection.y; | |
| 2945 selection.y = selectionAnchor; | |
| 2946 } | |
| 2947 // test whether selection actually changed. Fixes 1G71EO1 | |
| 2948 } else if (selectionAnchor is selection.x && caretOffset < selection.y) { | |
| 2949 // caret moved towards selection anchor (left side of selection). | |
| 2950 // shrink selection | |
| 2951 redrawEnd = selection.y; | |
| 2952 redrawStart = selection.y = caretOffset; | |
| 2953 } | |
| 2954 } else { | |
| 2955 if (caretOffset > selection.y) { | |
| 2956 // grow selection | |
| 2957 redrawStart = selection.y; | |
| 2958 redrawEnd = selection.y = caretOffset; | |
| 2959 // check if selection has reversed direction | |
| 2960 if (selection.x !is selectionAnchor) { | |
| 2961 redrawStart = selection.x; | |
| 2962 selection.x = selectionAnchor; | |
| 2963 } | |
| 2964 // test whether selection actually changed. Fixes 1G71EO1 | |
| 2965 } else if (selectionAnchor is selection.y && caretOffset > selection.x) { | |
| 2966 // caret moved towards selection anchor (right side of selection). | |
| 2967 // shrink selection | |
| 2968 redrawStart = selection.x; | |
| 2969 redrawEnd = selection.x = caretOffset; | |
| 2970 } | |
| 2971 } | |
| 2972 if (redrawStart !is -1 && redrawEnd !is -1) { | |
| 2973 internalRedrawRange(redrawStart, redrawEnd - redrawStart); | |
| 2974 sendSelectionEvent(); | |
| 2975 } | |
| 2976 } | |
| 2977 /** | |
| 2978 * Moves the caret to the next character or to the beginning of the | |
| 2979 * next line if the cursor is at the end of a line. | |
| 2980 */ | |
| 2981 void doSelectionCursorNext() { | |
| 2982 int caretLine = getCaretLine(); | |
| 2983 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2984 int offsetInLine = caretOffset - lineOffset; | |
| 2985 if (offsetInLine < content.getLine(caretLine).length) { | |
| 2986 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2987 offsetInLine = layout.getNextOffset(offsetInLine, SWT.MOVEMENT_CLUSTER); | |
| 2988 int lineStart = layout.getLineOffsets()[layout.getLineIndex(offsetInLine)]; | |
| 2989 renderer.disposeTextLayout(layout); | |
| 2990 caretOffset = offsetInLine + lineOffset; | |
| 2991 caretAlignment = offsetInLine is lineStart ? OFFSET_LEADING : PREVIOUS_OFFSET_TRAILING; | |
| 2992 showCaret(); | |
| 2993 } else if (caretLine < content.getLineCount() - 1 && !isSingleLine()) { | |
| 2994 caretLine++; | |
| 2995 caretOffset = content.getOffsetAtLine(caretLine); | |
| 2996 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 2997 showCaret(); | |
| 2998 } | |
| 2999 } | |
| 3000 /** | |
| 3001 * Moves the caret to the previous character or to the end of the previous | |
| 3002 * line if the cursor is at the beginning of a line. | |
| 3003 */ | |
| 3004 void doSelectionCursorPrevious() { | |
| 3005 int caretLine = getCaretLine(); | |
| 3006 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 3007 int offsetInLine = caretOffset - lineOffset; | |
| 3008 caretAlignment = OFFSET_LEADING; | |
| 3009 | |
| 3010 if (offsetInLine > 0) { | |
| 3011 caretOffset = getClusterPrevious(caretOffset, caretLine); | |
| 3012 showCaret(); | |
| 3013 } else if (caretLine > 0) { | |
| 3014 caretLine--; | |
| 3015 lineOffset = content.getOffsetAtLine(caretLine); | |
| 3016 caretOffset = lineOffset + content.getLine(caretLine).length; | |
| 3017 showCaret(); | |
| 3018 } | |
| 3019 } | |
| 3020 /** | |
| 3021 * Moves the caret one line down and to the same character offset relative | |
| 3022 * to the beginning of the line. Moves the caret to the end of the new line | |
| 3023 * if the new line is shorter than the character offset. | |
| 3024 * Moves the caret to the end of the text if the caret already is on the | |
| 3025 * last line. | |
| 3026 * Adjusts the selection according to the caret change. This can either add | |
| 3027 * to or subtract from the old selection, depending on the previous selection | |
| 3028 * direction. | |
| 3029 */ | |
| 3030 void doSelectionLineDown() { | |
| 3031 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3032 doLineDown(true); | |
| 3033 columnX = oldColumnX; | |
| 3034 } | |
| 3035 /** | |
| 3036 * Moves the caret one line up and to the same character offset relative | |
| 3037 * to the beginning of the line. Moves the caret to the end of the new line | |
| 3038 * if the new line is shorter than the character offset. | |
| 3039 * Moves the caret to the beginning of the document if it is already on the | |
| 3040 * first line. | |
| 3041 * Adjusts the selection according to the caret change. This can either add | |
| 3042 * to or subtract from the old selection, depending on the previous selection | |
| 3043 * direction. | |
| 3044 */ | |
| 3045 void doSelectionLineUp() { | |
| 3046 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3047 doLineUp(true); | |
| 3048 columnX = oldColumnX; | |
| 3049 } | |
| 3050 /** | |
| 3051 * Scrolls one page down so that the last line (truncated or whole) | |
| 3052 * of the current page becomes the fully visible top line. | |
| 3053 * <p> | |
| 3054 * The caret is scrolled the same number of lines so that its location | |
| 3055 * relative to the top line remains the same. The exception is the end | |
| 3056 * of the text where a full page scroll is not possible. In this case | |
| 3057 * the caret is moved after the last character. | |
| 3058 * <p></p> | |
| 3059 * Adjusts the selection according to the caret change. This can either add | |
| 3060 * to or subtract from the old selection, depending on the previous selection | |
| 3061 * direction. | |
| 3062 * </p> | |
| 3063 */ | |
| 3064 void doSelectionPageDown(int pixels) { | |
| 3065 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3066 doPageDown(true, pixels); | |
| 3067 columnX = oldColumnX; | |
| 3068 } | |
| 3069 /** | |
| 3070 * Scrolls one page up so that the first line (truncated or whole) | |
| 3071 * of the current page becomes the fully visible last line. | |
| 3072 * <p> | |
| 3073 * The caret is scrolled the same number of lines so that its location | |
| 3074 * relative to the top line remains the same. The exception is the beginning | |
| 3075 * of the text where a full page scroll is not possible. In this case the | |
| 3076 * caret is moved in front of the first character. | |
| 3077 * </p><p> | |
| 3078 * Adjusts the selection according to the caret change. This can either add | |
| 3079 * to or subtract from the old selection, depending on the previous selection | |
| 3080 * direction. | |
| 3081 * </p> | |
| 3082 */ | |
| 3083 void doSelectionPageUp(int pixels) { | |
| 3084 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3085 doPageUp(true, pixels); | |
| 3086 columnX = oldColumnX; | |
| 3087 } | |
| 3088 /** | |
| 3089 * Moves the caret to the end of the next word . | |
| 3090 */ | |
| 3091 void doSelectionWordNext() { | |
| 3092 int newCaretOffset = getWordNext(caretOffset, SWT.MOVEMENT_WORD); | |
| 3093 // Force symmetrical movement for word next and previous. Fixes 14536 | |
| 3094 caretAlignment = OFFSET_LEADING; | |
| 3095 // don't change caret position if in single line mode and the cursor | |
| 3096 // would be on a different line. fixes 5673 | |
| 3097 if (!isSingleLine() || | |
| 3098 content.getLineAtOffset(caretOffset) is content.getLineAtOffset(newCaretOffset)) { | |
| 3099 caretOffset = newCaretOffset; | |
| 3100 showCaret(); | |
| 3101 } | |
| 3102 } | |
| 3103 /** | |
| 3104 * Moves the caret to the start of the previous word. | |
| 3105 */ | |
| 3106 void doSelectionWordPrevious() { | |
| 3107 caretAlignment = OFFSET_LEADING; | |
| 3108 caretOffset = getWordPrevious(caretOffset, SWT.MOVEMENT_WORD); | |
| 3109 int caretLine = content.getLineAtOffset(caretOffset); | |
| 3110 // word previous always comes from bottom line. when | |
| 3111 // wrapping lines, stay on bottom line when on line boundary | |
| 3112 if (wordWrap && caretLine < content.getLineCount() - 1 && | |
| 3113 caretOffset is content.getOffsetAtLine(caretLine + 1)) { | |
| 3114 caretLine++; | |
| 3115 } | |
| 3116 showCaret(); | |
| 3117 } | |
| 3118 /** | |
| 3119 * Moves the caret one character to the left. Do not go to the previous line. | |
| 3120 * When in a bidi locale and at a R2L character the caret is moved to the | |
| 3121 * beginning of the R2L segment (visually right) and then one character to the | |
| 3122 * left (visually left because it's now in a L2R segment). | |
| 3123 */ | |
| 3124 void doVisualPrevious() { | |
| 3125 caretOffset = getClusterPrevious(caretOffset, getCaretLine()); | |
| 3126 showCaret(); | |
| 3127 } | |
| 3128 /** | |
| 3129 * Moves the caret one character to the right. Do not go to the next line. | |
| 3130 * When in a bidi locale and at a R2L character the caret is moved to the | |
| 3131 * end of the R2L segment (visually left) and then one character to the | |
| 3132 * right (visually right because it's now in a L2R segment). | |
| 3133 */ | |
| 3134 void doVisualNext() { | |
| 3135 caretOffset = getClusterNext(caretOffset, getCaretLine()); | |
| 3136 showCaret(); | |
| 3137 } | |
| 3138 /** | |
| 3139 * Moves the caret to the end of the next word. | |
| 3140 * If a selection exists, move the caret to the end of the selection | |
| 3141 * and remove the selection. | |
| 3142 */ | |
| 3143 void doWordNext() { | |
| 3144 if (selection.y - selection.x > 0) { | |
| 3145 caretOffset = selection.y; | |
| 3146 showCaret(); | |
| 3147 } else { | |
| 3148 doSelectionWordNext(); | |
| 3149 } | |
| 3150 } | |
| 3151 /** | |
| 3152 * Moves the caret to the start of the previous word. | |
| 3153 * If a selection exists, move the caret to the start of the selection | |
| 3154 * and remove the selection. | |
| 3155 */ | |
| 3156 void doWordPrevious() { | |
| 3157 if (selection.y - selection.x > 0) { | |
| 3158 caretOffset = selection.x; | |
| 3159 showCaret(); | |
| 3160 } else { | |
| 3161 doSelectionWordPrevious(); | |
| 3162 } | |
| 3163 } | |
| 3164 /** | |
| 3165 * Ends the autoscroll process. | |
| 3166 */ | |
| 3167 void endAutoScroll() { | |
| 3168 autoScrollDirection = SWT.NULL; | |
| 3169 } | |
| 3170 public override Color getBackground() { | |
| 3171 checkWidget(); | |
| 3172 if (background is null) { | |
| 3173 return getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND); | |
| 3174 } | |
| 3175 return background; | |
| 3176 } | |
| 3177 /** | |
| 3178 * Returns the baseline, in pixels. | |
| 3179 * | |
| 3180 * Note: this API should not be used if a StyleRange attribute causes lines to | |
| 3181 * have different heights (i.e. different fonts, rise, etc). | |
| 3182 * | |
| 3183 * @return baseline the baseline | |
| 3184 * @exception SWTException <ul> | |
| 3185 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3186 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3187 * </ul> | |
| 3188 * @since 3.0 | |
| 3189 * | |
| 3190 * @see #getBaseline(int) | |
| 3191 */ | |
| 3192 public int getBaseline() { | |
| 3193 checkWidget(); | |
| 3194 return renderer.getBaseline(); | |
| 3195 } | |
| 3196 /** | |
| 3197 * Returns the baseline at the given offset, in pixels. | |
| 3198 * | |
| 3199 * @param offset the offset | |
| 3200 * | |
| 3201 * @return baseline the baseline | |
| 3202 * | |
| 3203 * @exception SWTException <ul> | |
| 3204 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3205 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3206 * </ul> | |
| 3207 * @exception IllegalArgumentException <ul> | |
| 3208 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3209 * </ul> | |
| 3210 * | |
| 3211 * @since 3.2 | |
| 3212 */ | |
| 3213 public int getBaseline(int offset) { | |
| 3214 checkWidget(); | |
| 3215 if (!(0 <= offset && offset <= content.getCharCount())) { | |
| 3216 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 3217 } | |
| 3218 if (isFixedLineHeight()) { | |
| 3219 return renderer.getBaseline(); | |
| 3220 } | |
| 3221 int lineIndex = content.getLineAtOffset(offset); | |
| 3222 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3223 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3224 int lineInParagraph = layout.getLineIndex(Math.min(offset - lineOffset, layout.getText().length)); | |
| 3225 FontMetrics metrics = layout.getLineMetrics(lineInParagraph); | |
| 3226 renderer.disposeTextLayout(layout); | |
| 3227 return metrics.getAscent() + metrics.getLeading(); | |
| 3228 } | |
| 3229 /** | |
| 3230 * Gets the BIDI coloring mode. When true the BIDI text display | |
| 3231 * algorithm is applied to segments of text that are the same | |
| 3232 * color. | |
| 3233 * | |
| 3234 * @return the current coloring mode | |
| 3235 * @exception SWTException <ul> | |
| 3236 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3237 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3238 * </ul> | |
| 3239 * | |
| 3240 * @deprecated use BidiSegmentListener instead. | |
| 3241 */ | |
| 3242 public bool getBidiColoring() { | |
| 3243 checkWidget(); | |
| 3244 return bidiColoring; | |
| 3245 } | |
| 3246 /** | |
| 3247 * Returns the index of the last fully visible line. | |
| 3248 * | |
| 3249 * @return index of the last fully visible line. | |
| 3250 */ | |
| 3251 int getBottomIndex() { | |
| 3252 int bottomIndex; | |
| 3253 if (isFixedLineHeight()) { | |
| 3254 int lineCount = 1; | |
| 3255 int lineHeight = renderer.getLineHeight(); | |
| 3256 if (lineHeight !is 0) { | |
| 3257 // calculate the number of lines that are fully visible | |
| 3258 int partialTopLineHeight = topIndex * lineHeight - getVerticalScrollOffset(); | |
| 3259 lineCount = (clientAreaHeight - partialTopLineHeight) / lineHeight; | |
| 3260 } | |
| 3261 bottomIndex = Math.min(content.getLineCount() - 1, topIndex + Math.max(0, lineCount - 1)); | |
| 3262 } else { | |
| 3263 int clientAreaHeight = this.clientAreaHeight - bottomMargin; | |
| 3264 bottomIndex = getLineIndex(clientAreaHeight); | |
| 3265 if (bottomIndex > 0) { | |
| 3266 int linePixel = getLinePixel(bottomIndex); | |
| 3267 int lineHeight = renderer.getLineHeight(bottomIndex); | |
| 3268 if (linePixel + lineHeight > clientAreaHeight) { | |
| 3269 if (getLinePixel(bottomIndex - 1) >= topMargin) { | |
| 3270 bottomIndex--; | |
| 3271 } | |
| 3272 } | |
| 3273 } | |
| 3274 } | |
| 3275 return bottomIndex; | |
| 3276 } | |
| 3277 Rectangle getBoundsAtOffset(int offset) { | |
| 3278 int lineIndex = content.getLineAtOffset(offset); | |
| 3279 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3280 String line = content.getLine(lineIndex); | |
| 3281 Rectangle bounds; | |
| 3282 if (line.length !is 0) { | |
| 3283 int offsetInLine = offset - lineOffset; | |
| 3284 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3285 bounds = layout.getBounds(offsetInLine, offsetInLine); | |
| 3286 renderer.disposeTextLayout(layout); | |
| 3287 } else { | |
| 3288 bounds = new Rectangle (0, 0, 0, renderer.getLineHeight()); | |
| 3289 } | |
| 3290 if (offset is caretOffset) { | |
| 3291 int lineEnd = lineOffset + line.length; | |
| 3292 if (offset is lineEnd && caretAlignment is PREVIOUS_OFFSET_TRAILING) { | |
| 3293 bounds.width += getCaretWidth(); | |
| 3294 } | |
| 3295 } | |
| 3296 bounds.x += leftMargin - horizontalScrollOffset; | |
| 3297 bounds.y += getLinePixel(lineIndex); | |
| 3298 return bounds; | |
| 3299 } | |
| 3300 /** | |
| 3301 * Returns the caret position relative to the start of the text. | |
| 3302 * | |
| 3303 * @return the caret position relative to the start of the text. | |
| 3304 * @exception SWTException <ul> | |
| 3305 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3306 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3307 * </ul> | |
| 3308 */ | |
| 3309 public int getCaretOffset() { | |
| 3310 checkWidget(); | |
| 3311 return caretOffset; | |
| 3312 } | |
| 3313 /** | |
| 3314 * Returns the caret width. | |
| 3315 * | |
| 3316 * @return the caret width, 0 if caret is null. | |
| 3317 */ | |
| 3318 int getCaretWidth() { | |
| 3319 Caret caret = getCaret(); | |
| 3320 if (caret is null) return 0; | |
| 3321 return caret.getSize().x; | |
| 3322 } | |
| 3323 Object getClipboardContent(int clipboardType) { | |
| 3324 TextTransfer plainTextTransfer = TextTransfer.getInstance(); | |
| 3325 return clipboard.getContents(plainTextTransfer, clipboardType); | |
| 3326 } | |
| 3327 int getClusterNext(int offset, int lineIndex) { | |
| 3328 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3329 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3330 offset -= lineOffset; | |
| 3331 offset = layout.getNextOffset(offset, SWT.MOVEMENT_CLUSTER); | |
| 3332 offset += lineOffset; | |
| 3333 renderer.disposeTextLayout(layout); | |
| 3334 return offset; | |
| 3335 } | |
| 3336 int getClusterPrevious(int offset, int lineIndex) { | |
| 3337 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3338 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3339 offset -= lineOffset; | |
| 3340 offset = layout.getPreviousOffset(offset, SWT.MOVEMENT_CLUSTER); | |
| 3341 offset += lineOffset; | |
| 3342 renderer.disposeTextLayout(layout); | |
| 3343 return offset; | |
| 3344 } | |
| 3345 /** | |
| 3346 * Returns the content implementation that is used for text storage. | |
| 3347 * | |
| 3348 * @return content the user defined content implementation that is used for | |
| 3349 * text storage or the default content implementation if no user defined | |
| 3350 * content implementation has been set. | |
| 3351 * @exception SWTException <ul> | |
| 3352 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3353 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3354 * </ul> | |
| 3355 */ | |
| 3356 public StyledTextContent getContent() { | |
| 3357 checkWidget(); | |
| 3358 return content; | |
| 3359 } | |
| 3360 public override bool getDragDetect () { | |
| 3361 checkWidget (); | |
| 3362 return dragDetect_; | |
| 3363 } | |
| 3364 /** | |
| 3365 * Returns whether the widget implements double click mouse behavior. | |
| 3366 * | |
| 3367 * @return true if double clicking a word selects the word, false if double clicks | |
| 3368 * have the same effect as regular mouse clicks | |
| 3369 * @exception SWTException <ul> | |
| 3370 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3371 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3372 * </ul> | |
| 3373 */ | |
| 3374 public bool getDoubleClickEnabled() { | |
| 3375 checkWidget(); | |
| 3376 return doubleClickEnabled; | |
| 3377 } | |
| 3378 /** | |
| 3379 * Returns whether the widget content can be edited. | |
| 3380 * | |
| 3381 * @return true if content can be edited, false otherwise | |
| 3382 * @exception SWTException <ul> | |
| 3383 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3384 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3385 * </ul> | |
| 3386 */ | |
| 3387 public bool getEditable() { | |
| 3388 checkWidget(); | |
| 3389 return editable; | |
| 3390 } | |
| 3391 public override Color getForeground() { | |
| 3392 checkWidget(); | |
| 3393 if (foreground is null) { | |
| 3394 return getDisplay().getSystemColor(SWT.COLOR_LIST_FOREGROUND); | |
| 3395 } | |
| 3396 return foreground; | |
| 3397 } | |
| 3398 /** | |
| 3399 * Returns the horizontal scroll increment. | |
| 3400 * | |
| 3401 * @return horizontal scroll increment. | |
| 3402 */ | |
| 3403 int getHorizontalIncrement() { | |
| 3404 return renderer.averageCharWidth; | |
| 3405 } | |
| 3406 /** | |
| 3407 * Returns the horizontal scroll offset relative to the start of the line. | |
| 3408 * | |
| 3409 * @return horizontal scroll offset relative to the start of the line, | |
| 3410 * measured in character increments starting at 0, if > 0 the content is scrolled | |
| 3411 * @exception SWTException <ul> | |
| 3412 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3413 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3414 * </ul> | |
| 3415 */ | |
| 3416 public int getHorizontalIndex() { | |
| 3417 checkWidget(); | |
| 3418 return horizontalScrollOffset / getHorizontalIncrement(); | |
| 3419 } | |
| 3420 /** | |
| 3421 * Returns the horizontal scroll offset relative to the start of the line. | |
| 3422 * | |
| 3423 * @return the horizontal scroll offset relative to the start of the line, | |
| 3424 * measured in pixel starting at 0, if > 0 the content is scrolled. | |
| 3425 * @exception SWTException <ul> | |
| 3426 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3427 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3428 * </ul> | |
| 3429 */ | |
| 3430 public int getHorizontalPixel() { | |
| 3431 checkWidget(); | |
| 3432 return horizontalScrollOffset; | |
| 3433 } | |
| 3434 /** | |
| 3435 * Returns the line indentation of the widget. | |
| 3436 * | |
| 3437 * @return the line indentation | |
| 3438 * | |
| 3439 * @exception SWTException <ul> | |
| 3440 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3441 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3442 * </ul> | |
| 3443 * | |
| 3444 * @see #getLineIndent(int) | |
| 3445 * | |
| 3446 * @since 3.2 | |
| 3447 */ | |
| 3448 public int getIndent() { | |
| 3449 checkWidget(); | |
| 3450 return indent; | |
| 3451 } | |
| 3452 /** | |
| 3453 * Returns whether the widget justifies lines. | |
| 3454 * | |
| 3455 * @return whether lines are justified | |
| 3456 * | |
| 3457 * @exception SWTException <ul> | |
| 3458 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3459 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3460 * </ul> | |
| 3461 * | |
| 3462 * @see #getLineJustify(int) | |
| 3463 * | |
| 3464 * @since 3.2 | |
| 3465 */ | |
| 3466 public bool getJustify() { | |
| 3467 checkWidget(); | |
| 3468 return justify; | |
| 3469 } | |
| 3470 /** | |
| 3471 * Returns the action assigned to the key. | |
| 3472 * Returns SWT.NULL if there is no action associated with the key. | |
| 3473 * | |
| 3474 * @param key a key code defined in SWT.java or a character. | |
| 3475 * Optionally ORd with a state mask. Preferred state masks are one or more of | |
| 3476 * SWT.MOD1, SWT.MOD2, SWT.MOD3, since these masks account for modifier platform | |
| 3477 * differences. However, there may be cases where using the specific state masks | |
| 3478 * (i.e., SWT.CTRL, SWT.SHIFT, SWT.ALT, SWT.COMMAND) makes sense. | |
| 3479 * @return one of the predefined actions defined in ST.java or SWT.NULL | |
| 3480 * if there is no action associated with the key. | |
| 3481 * @exception SWTException <ul> | |
| 3482 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3483 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3484 * </ul> | |
| 3485 */ | |
| 3486 public int getKeyBinding(int key) { | |
| 3487 checkWidget(); | |
| 3488 if( auto p = key in keyActionMap ){ | |
| 3489 return *p; | |
| 3490 } | |
| 3491 return SWT.NULL; | |
| 3492 } | |
| 3493 /** | |
| 3494 * Gets the number of characters. | |
| 3495 * | |
| 3496 * @return number of characters in the widget | |
| 3497 * @exception SWTException <ul> | |
| 3498 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3499 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3500 * </ul> | |
| 3501 */ | |
| 3502 public int getCharCount() { | |
| 3503 checkWidget(); | |
| 3504 return content.getCharCount(); | |
| 3505 } | |
| 3506 /** | |
| 3507 * Returns the line at the given line index without delimiters. | |
| 3508 * Index 0 is the first line of the content. When there are not | |
| 3509 * any lines, getLine(0) is a valid call that answers an empty string. | |
| 3510 * <p> | |
| 3511 * | |
| 3512 * @param lineIndex index of the line to return. | |
| 3513 * @return the line text without delimiters | |
| 3514 * | |
| 3515 * @exception SWTException <ul> | |
| 3516 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3517 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3518 * </ul> | |
| 3519 * @exception IllegalArgumentException <ul> | |
| 3520 * <li>ERROR_INVALID_RANGE when the line index is outside the valid range (< 0 or >= getLineCount())</li> | |
| 3521 * </ul> | |
| 3522 * @since 3.4 | |
| 3523 */ | |
| 3524 public String getLine(int lineIndex) { | |
| 3525 checkWidget(); | |
| 3526 if (lineIndex < 0 || | |
| 3527 (lineIndex > 0 && lineIndex >= content.getLineCount())) { | |
| 3528 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 3529 } | |
| 3530 return content.getLine(lineIndex); | |
| 3531 } | |
| 3532 /** | |
| 3533 * Returns the alignment of the line at the given index. | |
| 3534 * | |
| 3535 * @param index the index of the line | |
| 3536 * | |
| 3537 * @return the line alignment | |
| 3538 * | |
| 3539 * @exception SWTException <ul> | |
| 3540 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3541 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3542 * </ul> | |
| 3543 * @exception IllegalArgumentException <ul> | |
| 3544 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3545 * </ul> | |
| 3546 * | |
| 3547 * @see #getAlignment() | |
| 3548 * | |
| 3549 * @since 3.2 | |
| 3550 */ | |
| 3551 public int getLineAlignment(int index) { | |
| 3552 checkWidget(); | |
| 3553 if (index < 0 || index > content.getLineCount()) { | |
| 3554 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 3555 } | |
| 3556 return renderer.getLineAlignment(index, alignment); | |
| 3557 } | |
| 3558 /** | |
| 3559 * Returns the line at the specified offset in the text | |
| 3560 * where 0 < offset < getCharCount() so that getLineAtOffset(getCharCount()) | |
| 3561 * returns the line of the insert location. | |
| 3562 * | |
| 3563 * @param offset offset relative to the start of the content. | |
| 3564 * 0 <= offset <= getCharCount() | |
| 3565 * @return line at the specified offset in the text | |
| 3566 * @exception SWTException <ul> | |
| 3567 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3568 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3569 * </ul> | |
| 3570 * @exception IllegalArgumentException <ul> | |
| 3571 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3572 * </ul> | |
| 3573 */ | |
| 3574 public int getLineAtOffset(int offset) { | |
| 3575 checkWidget(); | |
| 3576 if (offset < 0 || offset > getCharCount()) { | |
| 3577 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 3578 } | |
| 3579 return content.getLineAtOffset(offset); | |
| 3580 } | |
| 3581 /** | |
| 3582 * Returns the background color of the line at the given index. | |
| 3583 * Returns null if a LineBackgroundListener has been set or if no background | |
| 3584 * color has been specified for the line. Should not be called if a | |
| 3585 * LineBackgroundListener has been set since the listener maintains the | |
| 3586 * line background colors. | |
| 3587 * | |
| 3588 * @param index the index of the line | |
| 3589 * @return the background color of the line at the given index. | |
| 3590 * | |
| 3591 * @exception SWTException <ul> | |
| 3592 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3593 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3594 * </ul> | |
| 3595 * @exception IllegalArgumentException <ul> | |
| 3596 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3597 * </ul> | |
| 3598 */ | |
| 3599 public Color getLineBackground(int index) { | |
| 3600 checkWidget(); | |
| 3601 if (index < 0 || index > content.getLineCount()) { | |
| 3602 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 3603 } | |
| 3604 return isListening(LineGetBackground) ? null : renderer.getLineBackground(index, null); | |
| 3605 } | |
| 3606 /** | |
| 3607 * Returns the bullet of the line at the given index. | |
| 3608 * | |
| 3609 * @param index the index of the line | |
| 3610 * | |
| 3611 * @return the line bullet | |
| 3612 * | |
| 3613 * @exception SWTException <ul> | |
| 3614 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3615 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3616 * </ul> | |
| 3617 * @exception IllegalArgumentException <ul> | |
| 3618 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3619 * </ul> | |
| 3620 * | |
| 3621 * @since 3.2 | |
| 3622 */ | |
| 3623 public Bullet getLineBullet(int index) { | |
| 3624 checkWidget(); | |
| 3625 if (index < 0 || index > content.getLineCount()) { | |
| 3626 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 3627 } | |
| 3628 return isListening(LineGetStyle) ? null : renderer.getLineBullet(index, null); | |
| 3629 } | |
| 3630 /** | |
| 3631 * Returns the line background data for the given line or null if | |
| 3632 * there is none. | |
| 3633 * | |
| 3634 * @param lineOffset offset of the line start relative to the start | |
| 3635 * of the content. | |
| 3636 * @param line line to get line background data for | |
| 3637 * @return line background data for the given line. | |
| 3638 */ | |
| 3639 StyledTextEvent getLineBackgroundData(int lineOffset, String line) { | |
| 3640 return sendLineEvent(LineGetBackground, lineOffset, line); | |
| 3641 } | |
| 3642 /** | |
| 3643 * Gets the number of text lines. | |
| 3644 * | |
| 3645 * @return the number of lines in the widget | |
| 3646 * @exception SWTException <ul> | |
| 3647 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3648 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3649 * </ul> | |
| 3650 */ | |
| 3651 public int getLineCount() { | |
| 3652 checkWidget(); | |
| 3653 return content.getLineCount(); | |
| 3654 } | |
| 3655 /** | |
| 3656 * Returns the number of lines that can be completely displayed in the | |
| 3657 * widget client area. | |
| 3658 * | |
| 3659 * @return number of lines that can be completely displayed in the widget | |
| 3660 * client area. | |
| 3661 */ | |
| 3662 int getLineCountWhole() { | |
| 3663 if (isFixedLineHeight()) { | |
| 3664 int lineHeight = renderer.getLineHeight(); | |
| 3665 return lineHeight !is 0 ? clientAreaHeight / lineHeight : 1; | |
| 3666 } | |
| 3667 return getBottomIndex() - topIndex + 1; | |
| 3668 } | |
| 3669 /** | |
| 3670 * Returns the line delimiter used for entering new lines by key down | |
| 3671 * or paste operation. | |
| 3672 * | |
| 3673 * @return line delimiter used for entering new lines by key down | |
| 3674 * or paste operation. | |
| 3675 * @exception SWTException <ul> | |
| 3676 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3677 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3678 * </ul> | |
| 3679 */ | |
| 3680 public String getLineDelimiter() { | |
| 3681 checkWidget(); | |
| 3682 return content.getLineDelimiter(); | |
| 3683 } | |
| 3684 /** | |
| 3685 * Returns the line height. | |
| 3686 * <p> | |
| 3687 * Note: this API should not be used if a StyleRange attribute causes lines to | |
| 3688 * have different heights (i.e. different fonts, rise, etc). | |
| 3689 * </p> | |
| 3690 * | |
| 3691 * @return line height in pixel. | |
| 3692 * @exception SWTException <ul> | |
| 3693 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3694 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3695 * </ul> | |
| 3696 * @see #getLineHeight(int) | |
| 3697 */ | |
| 3698 public int getLineHeight() { | |
| 3699 checkWidget(); | |
| 3700 return renderer.getLineHeight(); | |
| 3701 } | |
| 3702 /** | |
| 3703 * Returns the line height at the given offset. | |
| 3704 * | |
| 3705 * @param offset the offset | |
| 3706 * | |
| 3707 * @return line height in pixels | |
| 3708 * | |
| 3709 * @exception SWTException <ul> | |
| 3710 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3711 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3712 * </ul> | |
| 3713 * @exception IllegalArgumentException <ul> | |
| 3714 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3715 * </ul> | |
| 3716 * | |
| 3717 * @since 3.2 | |
| 3718 */ | |
| 3719 public int getLineHeight(int offset) { | |
| 3720 checkWidget(); | |
| 3721 if (!(0 <= offset && offset <= content.getCharCount())) { | |
| 3722 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 3723 } | |
| 3724 if (isFixedLineHeight()) { | |
| 3725 return renderer.getLineHeight(); | |
| 3726 } | |
| 3727 int lineIndex = content.getLineAtOffset(offset); | |
| 3728 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3729 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3730 int lineInParagraph = layout.getLineIndex(Math.min(offset - lineOffset, layout.getText().length)); | |
| 3731 int height = layout.getLineBounds(lineInParagraph).height; | |
| 3732 renderer.disposeTextLayout(layout); | |
| 3733 return height; | |
| 3734 } | |
| 3735 /** | |
| 3736 * Returns the indentation of the line at the given index. | |
| 3737 * | |
| 3738 * @param index the index of the line | |
| 3739 * | |
| 3740 * @return the line indentation | |
| 3741 * | |
| 3742 * @exception SWTException <ul> | |
| 3743 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3744 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3745 * </ul> | |
| 3746 * @exception IllegalArgumentException <ul> | |
| 3747 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3748 * </ul> | |
| 3749 * | |
| 3750 * @see #getIndent() | |
| 3751 * | |
| 3752 * @since 3.2 | |
| 3753 */ | |
| 3754 public int getLineIndent(int index) { | |
| 3755 checkWidget(); | |
| 3756 if (index < 0 || index > content.getLineCount()) { | |
| 3757 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 3758 } | |
| 3759 return isListening(LineGetStyle) ? 0 : renderer.getLineIndent(index, indent); | |
| 3760 } | |
| 3761 /** | |
| 3762 * Returns whether the line at the given index is justified. | |
| 3763 * | |
| 3764 * @param index the index of the line | |
| 3765 * | |
| 3766 * @return whether the line is justified | |
| 3767 * | |
| 3768 * @exception SWTException <ul> | |
| 3769 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3770 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3771 * </ul> | |
| 3772 * @exception IllegalArgumentException <ul> | |
| 3773 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3774 * </ul> | |
| 3775 * | |
| 3776 * @see #getJustify() | |
| 3777 * | |
| 3778 * @since 3.2 | |
| 3779 */ | |
| 3780 public bool getLineJustify(int index) { | |
| 3781 checkWidget(); | |
| 3782 if (index < 0 || index > content.getLineCount()) { | |
| 3783 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 3784 } | |
| 3785 return isListening(LineGetStyle) ? false : renderer.getLineJustify(index, justify); | |
| 3786 } | |
| 3787 /** | |
| 3788 * Returns the line spacing of the widget. | |
| 3789 * | |
| 3790 * @return the line spacing | |
| 3791 * | |
| 3792 * @exception SWTException <ul> | |
| 3793 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3794 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3795 * </ul> | |
| 3796 * | |
| 3797 * @since 3.2 | |
| 3798 */ | |
| 3799 public int getLineSpacing() { | |
| 3800 checkWidget(); | |
| 3801 return lineSpacing; | |
| 3802 } | |
| 3803 /** | |
| 3804 * Returns the line style data for the given line or null if there is | |
| 3805 * none. | |
| 3806 * <p> | |
| 3807 * If there is a LineStyleListener but it does not set any styles, | |
| 3808 * the StyledTextEvent.styles field will be initialized to an empty | |
| 3809 * array. | |
| 3810 * </p> | |
| 3811 * | |
| 3812 * @param lineOffset offset of the line start relative to the start of | |
| 3813 * the content. | |
| 3814 * @param line line to get line styles for | |
| 3815 * @return line style data for the given line. Styles may start before | |
| 3816 * line start and end after line end | |
| 3817 */ | |
| 3818 StyledTextEvent getLineStyleData(int lineOffset, String line) { | |
| 3819 return sendLineEvent(LineGetStyle, lineOffset, line); | |
| 3820 } | |
| 3821 /** | |
| 3822 * Returns the top pixel, relative to the client area, of a given line. | |
| 3823 * Clamps out of ranges index. | |
| 3824 * | |
| 3825 * @param lineIndex the line index, the max value is lineCount. If | |
| 3826 * lineIndex is lineCount it returns the bottom pixel of the last line. | |
| 3827 * It means this function can be used to retrieve the bottom pixel of any line. | |
| 3828 * | |
| 3829 * @return the top pixel of a given line index | |
| 3830 * | |
| 3831 * @since 3.2 | |
| 3832 */ | |
| 3833 public int getLinePixel(int lineIndex) { | |
| 3834 checkWidget(); | |
| 3835 int lineCount = content.getLineCount(); | |
| 3836 lineIndex = Math.max(0, Math.min(lineCount, lineIndex)); | |
| 3837 if (isFixedLineHeight()) { | |
| 3838 int lineHeight = renderer.getLineHeight(); | |
| 3839 return lineIndex * lineHeight - getVerticalScrollOffset() + topMargin; | |
| 3840 } | |
| 3841 if (lineIndex is topIndex) return topIndexY + topMargin; | |
| 3842 int height = topIndexY; | |
| 3843 if (lineIndex > topIndex) { | |
| 3844 for (int i = topIndex; i < lineIndex; i++) { | |
| 3845 height += renderer.getLineHeight(i); | |
| 3846 } | |
| 3847 } else { | |
| 3848 for (int i = topIndex - 1; i >= lineIndex; i--) { | |
| 3849 height -= renderer.getLineHeight(i); | |
| 3850 } | |
| 3851 } | |
| 3852 return height + topMargin; | |
| 3853 } | |
| 3854 /** | |
| 3855 * Returns the line index for a y, relative to the client area. | |
| 3856 * The line index returned is always in the range 0..lineCount - 1. | |
| 3857 * | |
| 3858 * @param y the y-coordinate pixel | |
| 3859 * | |
| 3860 * @return the line index for a given y-coordinate pixel | |
| 3861 * | |
| 3862 * @since 3.2 | |
| 3863 */ | |
| 3864 public int getLineIndex(int y) { | |
| 3865 checkWidget(); | |
| 3866 y -= topMargin; | |
| 3867 if (isFixedLineHeight()) { | |
| 3868 int lineHeight = renderer.getLineHeight(); | |
| 3869 int lineIndex = (y + getVerticalScrollOffset()) / lineHeight; | |
| 3870 int lineCount = content.getLineCount(); | |
| 3871 lineIndex = Math.max(0, Math.min(lineCount - 1, lineIndex)); | |
| 3872 return lineIndex; | |
| 3873 } | |
| 3874 if (y is topIndexY) return topIndex; | |
| 3875 int line = topIndex; | |
| 3876 if (y < topIndexY) { | |
| 3877 while (y < topIndexY && line > 0) { | |
| 3878 y += renderer.getLineHeight(--line); | |
| 3879 } | |
| 3880 } else { | |
| 3881 int lineCount = content.getLineCount(); | |
| 3882 int lineHeight = renderer.getLineHeight(line); | |
| 3883 while (y - lineHeight >= topIndexY && line < lineCount - 1) { | |
| 3884 y -= lineHeight; | |
| 3885 lineHeight = renderer.getLineHeight(++line); | |
| 3886 } | |
| 3887 } | |
| 3888 return line; | |
| 3889 } | |
| 3890 /** | |
| 3891 * Returns the x, y location of the upper left corner of the character | |
| 3892 * bounding box at the specified offset in the text. The point is | |
| 3893 * relative to the upper left corner of the widget client area. | |
| 3894 * | |
| 3895 * @param offset offset relative to the start of the content. | |
| 3896 * 0 <= offset <= getCharCount() | |
| 3897 * @return x, y location of the upper left corner of the character | |
| 3898 * bounding box at the specified offset in the text. | |
| 3899 * @exception SWTException <ul> | |
| 3900 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3901 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3902 * </ul> | |
| 3903 * @exception IllegalArgumentException <ul> | |
| 3904 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3905 * </ul> | |
| 3906 */ | |
| 3907 public Point getLocationAtOffset(int offset) { | |
| 3908 checkWidget(); | |
| 3909 if (offset < 0 || offset > getCharCount()) { | |
| 3910 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 3911 } | |
| 3912 return getPointAtOffset(offset); | |
| 3913 } | |
| 3914 /** | |
| 3915 * Returns the character offset of the first character of the given line. | |
| 3916 * | |
| 3917 * @param lineIndex index of the line, 0 based relative to the first | |
| 3918 * line in the content. 0 <= lineIndex < getLineCount(), except | |
| 3919 * lineIndex may always be 0 | |
| 3920 * @return offset offset of the first character of the line, relative to | |
| 3921 * the beginning of the document. The first character of the document is | |
| 3922 * at offset 0. | |
| 3923 * When there are not any lines, getOffsetAtLine(0) is a valid call that | |
| 3924 * answers 0. | |
| 3925 * @exception SWTException <ul> | |
| 3926 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3927 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3928 * </ul> | |
| 3929 * @exception IllegalArgumentException <ul> | |
| 3930 * <li>ERROR_INVALID_RANGE when the line index is outside the valid range (< 0 or >= getLineCount())</li> | |
| 3931 * </ul> | |
| 3932 * @since 2.0 | |
| 3933 */ | |
| 3934 public int getOffsetAtLine(int lineIndex) { | |
| 3935 checkWidget(); | |
| 3936 if (lineIndex < 0 || | |
| 3937 (lineIndex > 0 && lineIndex >= content.getLineCount())) { | |
| 3938 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 3939 } | |
| 3940 return content.getOffsetAtLine(lineIndex); | |
| 3941 } | |
| 3942 /** | |
| 3943 * Returns the offset of the character at the given location relative | |
| 3944 * to the first character in the document. | |
| 3945 * <p> | |
| 3946 * The return value reflects the character offset that the caret will | |
| 3947 * be placed at if a mouse click occurred at the specified location. | |
| 3948 * If the x coordinate of the location is beyond the center of a character | |
| 3949 * the returned offset will be behind the character. | |
| 3950 * </p> | |
| 3951 * | |
| 3952 * @param point the origin of character bounding box relative to | |
| 3953 * the origin of the widget client area. | |
| 3954 * @return offset of the character at the given location relative | |
| 3955 * to the first character in the document. | |
| 3956 * @exception SWTException <ul> | |
| 3957 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3958 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3959 * </ul> | |
| 3960 * @exception IllegalArgumentException <ul> | |
| 3961 * <li>ERROR_NULL_ARGUMENT when point is null</li> | |
| 3962 * <li>ERROR_INVALID_ARGUMENT when there is no character at the specified location</li> | |
| 3963 * </ul> | |
| 3964 */ | |
| 3965 public int getOffsetAtLocation(Point point) { | |
| 3966 checkWidget(); | |
| 3967 if (point is null) { | |
| 3968 SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 3969 } | |
| 3970 int[] trailing = new int[1]; | |
| 3971 int offset = getOffsetAtPoint(point.x, point.y, trailing, true); | |
| 3972 if (offset is -1) { | |
| 3973 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 3974 } | |
| 3975 return offset + trailing[0]; | |
| 3976 } | |
| 3977 int getOffsetAtPoint(int x, int y) { | |
| 3978 int lineIndex = getLineIndex(y); | |
| 3979 y -= getLinePixel(lineIndex); | |
| 3980 return getOffsetAtPoint(x, y, lineIndex); | |
| 3981 } | |
| 3982 /** | |
| 3983 * Returns the offset at the specified x location in the specified line. | |
| 3984 * | |
| 3985 * @param x x location of the mouse location | |
| 3986 * @param line line the mouse location is in | |
| 3987 * @return the offset at the specified x location in the specified line, | |
| 3988 * relative to the beginning of the document | |
| 3989 */ | |
| 3990 int getOffsetAtPoint(int x, int y, int lineIndex) { | |
| 3991 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3992 x += horizontalScrollOffset - leftMargin; | |
| 3993 int[1] trailing; | |
| 3994 int offsetInLine = layout.getOffset(x, y, trailing); | |
| 3995 caretAlignment = OFFSET_LEADING; | |
| 3996 if (trailing[0] !is 0) { | |
| 3997 int lineInParagraph = layout.getLineIndex(offsetInLine + trailing[0]); | |
| 3998 int lineStart = layout.getLineOffsets()[lineInParagraph]; | |
| 3999 if (offsetInLine + trailing[0] is lineStart) { | |
| 4000 offsetInLine += trailing[0]; | |
| 4001 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 4002 } else { | |
| 4003 String line = content.getLine(lineIndex); | |
| 4004 int level; | |
| 4005 int offset = offsetInLine; | |
| 4006 while (offset > 0 && tango.text.Unicode.isDigit(line[offset])) offset--; | |
| 4007 if (offset is 0 && tango.text.Unicode.isDigit(line[offset])) { | |
| 4008 level = isMirrored() ? 1 : 0; | |
| 4009 } else { | |
| 4010 level = layout.getLevel(offset) & 0x1; | |
| 4011 } | |
| 4012 offsetInLine += trailing[0]; | |
| 4013 int trailingLevel = layout.getLevel(offsetInLine) & 0x1; | |
| 4014 if ((level ^ trailingLevel) !is 0) { | |
| 4015 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 4016 } else { | |
| 4017 caretAlignment = OFFSET_LEADING; | |
| 4018 } | |
| 4019 } | |
| 4020 } | |
| 4021 renderer.disposeTextLayout(layout); | |
| 4022 return offsetInLine + content.getOffsetAtLine(lineIndex); | |
| 4023 } | |
| 4024 int getOffsetAtPoint(int x, int y, int[] trailing, bool inTextOnly) { | |
| 4025 if (inTextOnly && y + getVerticalScrollOffset() < 0 || x + horizontalScrollOffset < 0) { | |
| 4026 return -1; | |
| 4027 } | |
| 4028 int bottomIndex = getPartialBottomIndex(); | |
| 4029 int height = getLinePixel(bottomIndex + 1); | |
| 4030 if (inTextOnly && y > height) { | |
| 4031 return -1; | |
| 4032 } | |
| 4033 int lineIndex = getLineIndex(y); | |
| 4034 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4035 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4036 x += horizontalScrollOffset - leftMargin ; | |
| 4037 y -= getLinePixel(lineIndex); | |
| 4038 int offset = layout.getOffset(x, y, trailing); | |
| 4039 Rectangle rect = layout.getLineBounds(layout.getLineIndex(offset)); | |
| 4040 renderer.disposeTextLayout(layout); | |
| 4041 if (inTextOnly && !(rect.x <= x && x <= rect.x + rect.width)) { | |
| 4042 return -1; | |
| 4043 } | |
| 4044 return offset + lineOffset; | |
| 4045 } | |
| 4046 /** | |
| 4047 * Returns the orientation of the receiver. | |
| 4048 * | |
| 4049 * @return the orientation style | |
| 4050 * | |
| 4051 * @exception SWTException <ul> | |
| 4052 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4053 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4054 * </ul> | |
| 4055 * | |
| 4056 * @since 2.1.2 | |
| 4057 */ | |
| 4058 public int getOrientation () { | |
| 4059 checkWidget(); | |
| 4060 return isMirrored() ? SWT.RIGHT_TO_LEFT : SWT.LEFT_TO_RIGHT; | |
| 4061 } | |
| 4062 /** | |
| 4063 * Returns the index of the last partially visible line. | |
| 4064 * | |
| 4065 * @return index of the last partially visible line. | |
| 4066 */ | |
| 4067 int getPartialBottomIndex() { | |
| 4068 if (isFixedLineHeight()) { | |
| 4069 int lineHeight = renderer.getLineHeight(); | |
| 4070 int partialLineCount = Compatibility.ceil(clientAreaHeight, lineHeight); | |
| 4071 return Math.max(0, Math.min(content.getLineCount(), topIndex + partialLineCount) - 1); | |
| 4072 } | |
| 4073 return getLineIndex(clientAreaHeight - bottomMargin); | |
| 4074 } | |
| 4075 /** | |
| 4076 * Returns the index of the first partially visible line. | |
| 4077 * | |
| 4078 * @return index of the first partially visible line. | |
| 4079 */ | |
| 4080 int getPartialTopIndex() { | |
| 4081 if (isFixedLineHeight()) { | |
| 4082 int lineHeight = renderer.getLineHeight(); | |
| 4083 return getVerticalScrollOffset() / lineHeight; | |
| 4084 } | |
| 4085 return topIndexY <= 0 ? topIndex : topIndex - 1; | |
| 4086 } | |
| 4087 /** | |
| 4088 * Returns the content in the specified range using the platform line | |
| 4089 * delimiter to separate lines. | |
| 4090 * | |
| 4091 * @param writer the TextWriter to write line text into | |
| 4092 * @return the content in the specified range using the platform line | |
| 4093 * delimiter to separate lines as written by the specified TextWriter. | |
| 4094 */ | |
| 4095 String getPlatformDelimitedText(TextWriter writer) { | |
| 4096 int end = writer.getStart() + writer.getCharCount(); | |
| 4097 int startLine = content.getLineAtOffset(writer.getStart()); | |
| 4098 int endLine = content.getLineAtOffset(end); | |
| 4099 String endLineText = content.getLine(endLine); | |
| 4100 int endLineOffset = content.getOffsetAtLine(endLine); | |
| 4101 | |
| 4102 for (int i = startLine; i <= endLine; i++) { | |
| 4103 writer.writeLine(content.getLine(i), content.getOffsetAtLine(i)); | |
| 4104 if (i < endLine) { | |
| 4105 writer.writeLineDelimiter(PlatformLineDelimiter); | |
| 4106 } | |
| 4107 } | |
| 4108 if (end > endLineOffset + endLineText.length) { | |
| 4109 writer.writeLineDelimiter(PlatformLineDelimiter); | |
| 4110 } | |
| 4111 writer.close(); | |
| 4112 return writer.toString(); | |
| 4113 } | |
| 4114 /** | |
| 4115 * Returns all the ranges of text that have an associated StyleRange. | |
| 4116 * Returns an empty array if a LineStyleListener has been set. | |
| 4117 * Should not be called if a LineStyleListener has been set since the | |
| 4118 * listener maintains the styles. | |
| 4119 * <p> | |
| 4120 * The ranges array contains start and length pairs. Each pair refers to | |
| 4121 * the corresponding style in the styles array. For example, the pair | |
| 4122 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 4123 * at styles[n/2] returned by <code>getStyleRanges(int, int, bool)</code>. | |
| 4124 * </p> | |
| 4125 * | |
| 4126 * @return the ranges or an empty array if a LineStyleListener has been set. | |
| 4127 * | |
| 4128 * @exception SWTException <ul> | |
| 4129 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4130 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4131 * </ul> | |
| 4132 * | |
| 4133 * @since 3.2 | |
| 4134 * | |
| 4135 * @see #getStyleRanges(bool) | |
| 4136 */ | |
| 4137 public int[] getRanges() { | |
| 4138 checkWidget(); | |
| 4139 if (!isListening(LineGetStyle)) { | |
| 4140 int[] ranges = renderer.getRanges(0, content.getCharCount()); | |
| 4141 if (ranges !is null) return ranges; | |
| 4142 } | |
| 4143 return new int[0]; | |
| 4144 } | |
| 4145 /** | |
| 4146 * Returns the ranges of text that have an associated StyleRange. | |
| 4147 * Returns an empty array if a LineStyleListener has been set. | |
| 4148 * Should not be called if a LineStyleListener has been set since the | |
| 4149 * listener maintains the styles. | |
| 4150 * <p> | |
| 4151 * The ranges array contains start and length pairs. Each pair refers to | |
| 4152 * the corresponding style in the styles array. For example, the pair | |
| 4153 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 4154 * at styles[n/2] returned by <code>getStyleRanges(int, int, bool)</code>. | |
| 4155 * </p> | |
| 4156 * | |
| 4157 * @param start the start offset of the style ranges to return | |
| 4158 * @param length the number of style ranges to return | |
| 4159 * | |
| 4160 * @return the ranges or an empty array if a LineStyleListener has been set. | |
| 4161 * | |
| 4162 * @exception SWTException <ul> | |
| 4163 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4164 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4165 * </ul> | |
| 4166 * @exception IllegalArgumentException <ul> | |
| 4167 * <li>ERROR_INVALID_RANGE if start or length are outside the widget content</li> | |
| 4168 * </ul> | |
| 4169 * | |
| 4170 * @since 3.2 | |
| 4171 * | |
| 4172 * @see #getStyleRanges(int, int, bool) | |
| 4173 */ | |
| 4174 public int[] getRanges(int start, int length) { | |
| 4175 checkWidget(); | |
| 4176 int contentLength = getCharCount(); | |
| 4177 int end = start + length; | |
| 4178 if (start > end || start < 0 || end > contentLength) { | |
| 4179 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 4180 } | |
| 4181 if (!isListening(LineGetStyle)) { | |
| 4182 int[] ranges = renderer.getRanges(start, length); | |
| 4183 if (ranges !is null) return ranges; | |
| 4184 } | |
| 4185 return new int[0]; | |
| 4186 } | |
| 4187 /** | |
| 4188 * Returns the selection. | |
| 4189 * <p> | |
| 4190 * Text selections are specified in terms of caret positions. In a text | |
| 4191 * widget that contains N characters, there are N+1 caret positions, | |
| 4192 * ranging from 0..N | |
| 4193 * </p> | |
| 4194 * | |
| 4195 * @return start and end of the selection, x is the offset of the first | |
| 4196 * selected character, y is the offset after the last selected character. | |
| 4197 * The selection values returned are visual (i.e., x will always always be | |
| 4198 * <= y). To determine if a selection is right-to-left (RtoL) vs. left-to-right | |
| 4199 * (LtoR), compare the caretOffset to the start and end of the selection | |
| 4200 * (e.g., caretOffset is start of selection implies that the selection is RtoL). | |
| 4201 * @see #getSelectionRange | |
| 4202 * @exception SWTException <ul> | |
| 4203 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4204 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4205 * </ul> | |
| 4206 */ | |
| 4207 public Point getSelection() { | |
| 4208 checkWidget(); | |
| 4209 return new Point(selection.x, selection.y); | |
| 4210 } | |
| 4211 /** | |
| 4212 * Returns the selection. | |
| 4213 * | |
| 4214 * @return start and length of the selection, x is the offset of the | |
| 4215 * first selected character, relative to the first character of the | |
| 4216 * widget content. y is the length of the selection. | |
| 4217 * The selection values returned are visual (i.e., length will always always be | |
| 4218 * positive). To determine if a selection is right-to-left (RtoL) vs. left-to-right | |
| 4219 * (LtoR), compare the caretOffset to the start and end of the selection | |
| 4220 * (e.g., caretOffset is start of selection implies that the selection is RtoL). | |
| 4221 * @exception SWTException <ul> | |
| 4222 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4223 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4224 * </ul> | |
| 4225 */ | |
| 4226 public Point getSelectionRange() { | |
| 4227 checkWidget(); | |
| 4228 return new Point(selection.x, selection.y - selection.x); | |
| 4229 } | |
| 4230 /** | |
| 4231 * Returns the receiver's selection background color. | |
| 4232 * | |
| 4233 * @return the selection background color | |
| 4234 * | |
| 4235 * @exception SWTException <ul> | |
| 4236 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4237 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4238 * </ul> | |
| 4239 * @since 2.1 | |
| 4240 */ | |
| 4241 public Color getSelectionBackground() { | |
| 4242 checkWidget(); | |
| 4243 if (selectionBackground is null) { | |
| 4244 return getDisplay().getSystemColor(SWT.COLOR_LIST_SELECTION); | |
| 4245 } | |
| 4246 return selectionBackground; | |
| 4247 } | |
| 4248 /** | |
| 4249 * Gets the number of selected characters. | |
| 4250 * | |
| 4251 * @return the number of selected characters. | |
| 4252 * @exception SWTException <ul> | |
| 4253 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4254 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4255 * </ul> | |
| 4256 */ | |
| 4257 public int getSelectionCount() { | |
| 4258 checkWidget(); | |
| 4259 return getSelectionRange().y; | |
| 4260 } | |
| 4261 /** | |
| 4262 * Returns the receiver's selection foreground color. | |
| 4263 * | |
| 4264 * @return the selection foreground color | |
| 4265 * | |
| 4266 * @exception SWTException <ul> | |
| 4267 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4268 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4269 * </ul> | |
| 4270 * @since 2.1 | |
| 4271 */ | |
| 4272 public Color getSelectionForeground() { | |
| 4273 checkWidget(); | |
| 4274 if (selectionForeground is null) { | |
| 4275 return getDisplay().getSystemColor(SWT.COLOR_LIST_SELECTION_TEXT); | |
| 4276 } | |
| 4277 return selectionForeground; | |
| 4278 } | |
| 4279 /** | |
| 4280 * Returns the selected text. | |
| 4281 * | |
| 4282 * @return selected text, or an empty String if there is no selection. | |
| 4283 * @exception SWTException <ul> | |
| 4284 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4285 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4286 * </ul> | |
| 4287 */ | |
| 4288 public String getSelectionText() { | |
| 4289 checkWidget(); | |
| 4290 return content.getTextRange(selection.x, selection.y - selection.x); | |
| 4291 } | |
| 4292 public override int getStyle() { | |
| 4293 int style = super.getStyle(); | |
| 4294 style &= ~(SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT | SWT.MIRRORED); | |
| 4295 if (isMirrored()) { | |
| 4296 style |= SWT.RIGHT_TO_LEFT | SWT.MIRRORED; | |
| 4297 } else { | |
| 4298 style |= SWT.LEFT_TO_RIGHT; | |
| 4299 } | |
| 4300 return style; | |
| 4301 } | |
| 4302 | |
| 4303 /** | |
| 4304 * Returns the text segments that should be treated as if they | |
| 4305 * had a different direction than the surrounding text. | |
| 4306 * | |
| 4307 * @param lineOffset offset of the first character in the line. | |
| 4308 * 0 based from the beginning of the document. | |
| 4309 * @param line text of the line to specify bidi segments for | |
| 4310 * @return text segments that should be treated as if they had a | |
| 4311 * different direction than the surrounding text. Only the start | |
| 4312 * index of a segment is specified, relative to the start of the | |
| 4313 * line. Always starts with 0 and ends with the line length. | |
| 4314 * @exception IllegalArgumentException <ul> | |
| 4315 * <li>ERROR_INVALID_ARGUMENT - if the segment indices returned | |
| 4316 * by the listener do not start with 0, are not in ascending order, | |
| 4317 * exceed the line length or have duplicates</li> | |
| 4318 * </ul> | |
| 4319 */ | |
| 4320 int [] getBidiSegments(int lineOffset, String line) { | |
| 4321 if (!isBidi()) return null; | |
| 4322 if (!isListening(LineGetSegments)) { | |
| 4323 return getBidiSegmentsCompatibility(line, lineOffset); | |
| 4324 } | |
| 4325 StyledTextEvent event = sendLineEvent(LineGetSegments, lineOffset, line); | |
| 4326 int lineLength = line.length; | |
| 4327 int[] segments; | |
| 4328 if (event is null || event.segments is null || event.segments.length is 0) { | |
| 4329 segments = [0, lineLength]; | |
| 4330 } else { | |
| 4331 int segmentCount = event.segments.length; | |
| 4332 | |
| 4333 // test segment index consistency | |
| 4334 if (event.segments[0] !is 0) { | |
| 4335 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 4336 } | |
| 4337 for (int i = 1; i < segmentCount; i++) { | |
| 4338 if (event.segments[i] <= event.segments[i - 1] || event.segments[i] > lineLength) { | |
| 4339 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 4340 } | |
| 4341 } | |
| 4342 // ensure that last segment index is line end offset | |
| 4343 if (event.segments[segmentCount - 1] !is lineLength) { | |
| 4344 segments = new int[segmentCount + 1]; | |
| 4345 System.arraycopy(event.segments, 0, segments, 0, segmentCount); | |
| 4346 segments[segmentCount] = lineLength; | |
| 4347 } else { | |
| 4348 segments = event.segments; | |
| 4349 } | |
| 4350 } | |
| 4351 return segments; | |
| 4352 } | |
| 4353 /** | |
| 4354 * @see #getBidiSegments | |
| 4355 * Supports deprecated setBidiColoring API. Remove when API is removed. | |
| 4356 */ | |
| 4357 int [] getBidiSegmentsCompatibility(String line, int lineOffset) { | |
| 4358 int lineLength = line.length; | |
| 4359 if (!bidiColoring) { | |
| 4360 return [0, lineLength]; | |
| 4361 } | |
| 4362 StyleRange [] styles = null; | |
| 4363 StyledTextEvent event = getLineStyleData(lineOffset, line); | |
| 4364 if (event !is null) { | |
| 4365 styles = event.styles; | |
| 4366 } else { | |
| 4367 styles = renderer.getStyleRanges(lineOffset, lineLength, true); | |
| 4368 } | |
| 4369 if (styles is null || styles.length is 0) { | |
| 4370 return [0, lineLength]; | |
| 4371 } | |
| 4372 int k=0, count = 1; | |
| 4373 while (k < styles.length && styles[k].start is 0 && styles[k].length is lineLength) { | |
| 4374 k++; | |
| 4375 } | |
| 4376 int[] offsets = new int[(styles.length - k) * 2 + 2]; | |
| 4377 for (int i = k; i < styles.length; i++) { | |
| 4378 StyleRange style = styles[i]; | |
| 4379 int styleLineStart = Math.max(style.start - lineOffset, 0); | |
| 4380 int styleLineEnd = Math.max(style.start + style.length - lineOffset, styleLineStart); | |
| 4381 styleLineEnd = Math.min (styleLineEnd, line.length ); | |
| 4382 if (i > 0 && count > 1 && | |
| 4383 ((styleLineStart >= offsets[count-2] && styleLineStart <= offsets[count-1]) || | |
| 4384 (styleLineEnd >= offsets[count-2] && styleLineEnd <= offsets[count-1])) && | |
| 4385 style.similarTo(styles[i-1])) { | |
| 4386 offsets[count-2] = Math.min(offsets[count-2], styleLineStart); | |
| 4387 offsets[count-1] = Math.max(offsets[count-1], styleLineEnd); | |
| 4388 } else { | |
| 4389 if (styleLineStart > offsets[count - 1]) { | |
| 4390 offsets[count] = styleLineStart; | |
| 4391 count++; | |
| 4392 } | |
| 4393 offsets[count] = styleLineEnd; | |
| 4394 count++; | |
| 4395 } | |
| 4396 } | |
| 4397 // add offset for last non-colored segment in line, if any | |
| 4398 if (lineLength > offsets[count-1]) { | |
| 4399 offsets [count] = lineLength; | |
| 4400 count++; | |
| 4401 } | |
| 4402 if (count is offsets.length) { | |
| 4403 return offsets; | |
| 4404 } | |
| 4405 int [] result = new int [count]; | |
| 4406 System.arraycopy (offsets, 0, result, 0, count); | |
| 4407 return result; | |
| 4408 } | |
| 4409 /** | |
| 4410 * Returns the style range at the given offset. | |
| 4411 * <p> | |
| 4412 * Returns null if a LineStyleListener has been set or if a style is not set | |
| 4413 * for the offset. | |
| 4414 * Should not be called if a LineStyleListener has been set since the | |
| 4415 * listener maintains the styles. | |
| 4416 * </p> | |
| 4417 * | |
| 4418 * @param offset the offset to return the style for. | |
| 4419 * 0 <= offset < getCharCount() must be true. | |
| 4420 * @return a StyleRange with start is offset and length is 1, indicating | |
| 4421 * the style at the given offset. null if a LineStyleListener has been set | |
| 4422 * or if a style is not set for the given offset. | |
| 4423 * @exception SWTException <ul> | |
| 4424 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4425 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4426 * </ul> | |
| 4427 * @exception IllegalArgumentException <ul> | |
| 4428 * <li>ERROR_INVALID_ARGUMENT when the offset is invalid</li> | |
| 4429 * </ul> | |
| 4430 */ | |
| 4431 public StyleRange getStyleRangeAtOffset(int offset) { | |
| 4432 checkWidget(); | |
| 4433 if (offset < 0 || offset >= getCharCount()) { | |
| 4434 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 4435 } | |
| 4436 if (!isListening(LineGetStyle)) { | |
| 4437 StyleRange[] ranges = renderer.getStyleRanges(offset, 1, true); | |
| 4438 if (ranges !is null) return ranges[0]; | |
| 4439 } | |
| 4440 return null; | |
| 4441 } | |
| 4442 /** | |
| 4443 * Returns the styles. | |
| 4444 * <p> | |
| 4445 * Returns an empty array if a LineStyleListener has been set. | |
| 4446 * Should not be called if a LineStyleListener has been set since the | |
| 4447 * listener maintains the styles. | |
| 4448 * <p></p> | |
| 4449 * Note: Because a StyleRange includes the start and length, the | |
| 4450 * same instance cannot occur multiple times in the array of styles. | |
| 4451 * If the same style attributes, such as font and color, occur in | |
| 4452 * multiple StyleRanges, <code>getStyleRanges(bool)</code> | |
| 4453 * can be used to get the styles without the ranges. | |
| 4454 * </p> | |
| 4455 * | |
| 4456 * @return the styles or an empty array if a LineStyleListener has been set. | |
| 4457 * | |
| 4458 * @exception SWTException <ul> | |
| 4459 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4460 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4461 * </ul> | |
| 4462 * | |
| 4463 * @see #getStyleRanges(bool) | |
| 4464 */ | |
| 4465 public StyleRange[] getStyleRanges() { | |
| 4466 checkWidget(); | |
| 4467 return getStyleRanges(0, content.getCharCount(), true); | |
| 4468 } | |
| 4469 /** | |
| 4470 * Returns the styles. | |
| 4471 * <p> | |
| 4472 * Returns an empty array if a LineStyleListener has been set. | |
| 4473 * Should not be called if a LineStyleListener has been set since the | |
| 4474 * listener maintains the styles. | |
| 4475 * </p><p> | |
| 4476 * Note: When <code>includeRanges</code> is true, the start and length | |
| 4477 * fields of each StyleRange will be valid, however the StyleRange | |
| 4478 * objects may need to be cloned. When <code>includeRanges</code> is | |
| 4479 * false, <code>getRanges(int, int)</code> can be used to get the | |
| 4480 * associated ranges. | |
| 4481 * </p> | |
| 4482 * | |
| 4483 * @param includeRanges whether the start and length field of the StyleRanges should be set. | |
| 4484 * | |
| 4485 * @return the styles or an empty array if a LineStyleListener has been set. | |
| 4486 * | |
| 4487 * @exception SWTException <ul> | |
| 4488 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4489 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4490 * </ul> | |
| 4491 * | |
| 4492 * @since 3.2 | |
| 4493 * | |
| 4494 * @see #getRanges(int, int) | |
| 4495 * @see #setStyleRanges(int[], StyleRange[]) | |
| 4496 */ | |
| 4497 public StyleRange[] getStyleRanges(bool includeRanges) { | |
| 4498 checkWidget(); | |
| 4499 return getStyleRanges(0, content.getCharCount(), includeRanges); | |
| 4500 } | |
| 4501 /** | |
| 4502 * Returns the styles for the given text range. | |
| 4503 * <p> | |
| 4504 * Returns an empty array if a LineStyleListener has been set. | |
| 4505 * Should not be called if a LineStyleListener has been set since the | |
| 4506 * listener maintains the styles. | |
| 4507 * </p><p> | |
| 4508 * Note: Because the StyleRange includes the start and length, the | |
| 4509 * same instance cannot occur multiple times in the array of styles. | |
| 4510 * If the same style attributes, such as font and color, occur in | |
| 4511 * multiple StyleRanges, <code>getStyleRanges(int, int, bool)</code> | |
| 4512 * can be used to get the styles without the ranges. | |
| 4513 * </p> | |
| 4514 * @param start the start offset of the style ranges to return | |
| 4515 * @param length the number of style ranges to return | |
| 4516 * | |
| 4517 * @return the styles or an empty array if a LineStyleListener has | |
| 4518 * been set. The returned styles will reflect the given range. The first | |
| 4519 * returned <code>StyleRange</code> will have a starting offset >= start | |
| 4520 * and the last returned <code>StyleRange</code> will have an ending | |
| 4521 * offset <= start + length - 1 | |
| 4522 * | |
| 4523 * @exception SWTException <ul> | |
| 4524 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4525 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4526 * </ul> | |
| 4527 * @exception IllegalArgumentException <ul> | |
| 4528 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4529 * </ul> | |
| 4530 * | |
| 4531 * @see #getStyleRanges(int, int, bool) | |
| 4532 * | |
| 4533 * @since 3.0 | |
| 4534 */ | |
| 4535 public StyleRange[] getStyleRanges(int start, int length) { | |
| 4536 checkWidget(); | |
| 4537 return getStyleRanges(start, length, true); | |
| 4538 } | |
| 4539 /** | |
| 4540 * Returns the styles for the given text range. | |
| 4541 * <p> | |
| 4542 * Returns an empty array if a LineStyleListener has been set. | |
| 4543 * Should not be called if a LineStyleListener has been set since the | |
| 4544 * listener maintains the styles. | |
| 4545 * </p><p> | |
| 4546 * Note: When <code>includeRanges</code> is true, the start and length | |
| 4547 * fields of each StyleRange will be valid, however the StyleRange | |
| 4548 * objects may need to be cloned. When <code>includeRanges</code> is | |
| 4549 * false, <code>getRanges(int, int)</code> can be used to get the | |
| 4550 * associated ranges. | |
| 4551 * </p> | |
| 4552 * | |
| 4553 * @param start the start offset of the style ranges to return | |
| 4554 * @param length the number of style ranges to return | |
| 4555 * @param includeRanges whether the start and length field of the StyleRanges should be set. | |
| 4556 * | |
| 4557 * @return the styles or an empty array if a LineStyleListener has | |
| 4558 * been set. The returned styles will reflect the given range. The first | |
| 4559 * returned <code>StyleRange</code> will have a starting offset >= start | |
| 4560 * and the last returned <code>StyleRange</code> will have an ending | |
| 4561 * offset <= start + length - 1 | |
| 4562 * | |
| 4563 * @exception SWTException <ul> | |
| 4564 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4565 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4566 * </ul> | |
| 4567 * @exception IllegalArgumentException <ul> | |
| 4568 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4569 * </ul> | |
| 4570 * | |
| 4571 * @since 3.2 | |
| 4572 * | |
| 4573 * @see #getRanges(int, int) | |
| 4574 * @see #setStyleRanges(int[], StyleRange[]) | |
| 4575 */ | |
| 4576 public StyleRange[] getStyleRanges(int start, int length, bool includeRanges) { | |
| 4577 checkWidget(); | |
| 4578 int contentLength = getCharCount(); | |
| 4579 int end = start + length; | |
| 4580 if (start > end || start < 0 || end > contentLength) { | |
| 4581 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 4582 } | |
| 4583 if (!isListening(LineGetStyle)) { | |
| 4584 StyleRange[] ranges = renderer.getStyleRanges(start, length, includeRanges); | |
| 4585 if (ranges !is null) return ranges; | |
| 4586 } | |
| 4587 return new StyleRange[0]; | |
| 4588 } | |
| 4589 /** | |
| 4590 * Returns the tab width measured in characters. | |
| 4591 * | |
| 4592 * @return tab width measured in characters | |
| 4593 * @exception SWTException <ul> | |
| 4594 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4595 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4596 * </ul> | |
| 4597 */ | |
| 4598 public int getTabs() { | |
| 4599 checkWidget(); | |
| 4600 return tabLength; | |
| 4601 } | |
| 4602 /** | |
| 4603 * Returns a copy of the widget content. | |
| 4604 * | |
| 4605 * @return copy of the widget content | |
| 4606 * @exception SWTException <ul> | |
| 4607 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4608 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4609 * </ul> | |
| 4610 */ | |
| 4611 public String getText() { | |
| 4612 checkWidget(); | |
| 4613 return content.getTextRange(0, getCharCount()); | |
| 4614 } | |
| 4615 /** | |
| 4616 * Returns the widget content between the two offsets. | |
| 4617 * | |
| 4618 * @param start offset of the first character in the returned String | |
| 4619 * @param end offset of the last character in the returned String | |
| 4620 * @return widget content starting at start and ending at end | |
| 4621 * @see #getTextRange(int,int) | |
| 4622 * @exception SWTException <ul> | |
| 4623 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4624 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4625 * </ul> | |
| 4626 * @exception IllegalArgumentException <ul> | |
| 4627 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4628 * </ul> | |
| 4629 */ | |
| 4630 public String getText(int start, int end) { | |
| 4631 checkWidget(); | |
| 4632 int contentLength = getCharCount(); | |
| 4633 if (start < 0 || start >= contentLength || end < 0 || end >= contentLength || start > end) { | |
| 4634 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 4635 } | |
| 4636 return content.getTextRange(start, end - start + 1); | |
| 4637 } | |
| 4638 /** | |
| 4639 * Returns the smallest bounding rectangle that includes the characters between two offsets. | |
| 4640 * | |
| 4641 * @param start offset of the first character included in the bounding box | |
| 4642 * @param end offset of the last character included in the bounding box | |
| 4643 * @return bounding box of the text between start and end | |
| 4644 * @exception SWTException <ul> | |
| 4645 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4646 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4647 * </ul> | |
| 4648 * @exception IllegalArgumentException <ul> | |
| 4649 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4650 * </ul> | |
| 4651 * @since 3.1 | |
| 4652 */ | |
| 4653 public Rectangle getTextBounds(int start, int end) { | |
| 4654 checkWidget(); | |
| 4655 int contentLength = getCharCount(); | |
| 4656 if (start < 0 || start >= contentLength || end < 0 || end >= contentLength || start > end) { | |
| 4657 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 4658 } | |
| 4659 int lineStart = content.getLineAtOffset(start); | |
| 4660 int lineEnd = content.getLineAtOffset(end); | |
| 4661 Rectangle rect; | |
| 4662 int y = getLinePixel(lineStart); | |
| 4663 int height = 0; | |
| 4664 int left = 0x7fffffff, right = 0; | |
| 4665 for (int i = lineStart; i <= lineEnd; i++) { | |
| 4666 int lineOffset = content.getOffsetAtLine(i); | |
| 4667 TextLayout layout = renderer.getTextLayout(i); | |
| 4668 int length = layout.getText().length; | |
| 4669 if (length > 0) { | |
| 4670 if (i is lineStart) { | |
| 4671 if (i is lineEnd) { | |
| 4672 rect = layout.getBounds(start - lineOffset, end - lineOffset); | |
| 4673 } else { | |
| 4674 rect = layout.getBounds(start - lineOffset, length); | |
| 4675 } | |
| 4676 y += rect.y; | |
| 4677 } else if (i is lineEnd) { | |
| 4678 rect = layout.getBounds(0, end - lineOffset); | |
| 4679 } else { | |
| 4680 rect = layout.getBounds(); | |
| 4681 } | |
| 4682 left = Math.min(left, rect.x); | |
| 4683 right = Math.max(right, rect.x + rect.width); | |
| 4684 height += rect.height; | |
| 4685 } else { | |
| 4686 height += renderer.getLineHeight(); | |
| 4687 } | |
| 4688 renderer.disposeTextLayout(layout); | |
| 4689 } | |
| 4690 rect = new Rectangle (left, y, right-left, height); | |
| 4691 rect.x += leftMargin - horizontalScrollOffset; | |
| 4692 return rect; | |
| 4693 } | |
| 4694 /** | |
| 4695 * Returns the widget content starting at start for length characters. | |
| 4696 * | |
| 4697 * @param start offset of the first character in the returned String | |
| 4698 * @param length number of characters to return | |
| 4699 * @return widget content starting at start and extending length characters. | |
| 4700 * @exception SWTException <ul> | |
| 4701 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4702 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4703 * </ul> | |
| 4704 * @exception IllegalArgumentException <ul> | |
| 4705 * <li>ERROR_INVALID_RANGE when start and/or length are outside the widget content</li> | |
| 4706 * </ul> | |
| 4707 */ | |
| 4708 public String getTextRange(int start, int length) { | |
| 4709 checkWidget(); | |
| 4710 int contentLength = getCharCount(); | |
| 4711 int end = start + length; | |
| 4712 if (start > end || start < 0 || end > contentLength) { | |
| 4713 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 4714 } | |
| 4715 return content.getTextRange(start, length); | |
| 4716 } | |
| 4717 /** | |
| 4718 * Returns the maximum number of characters that the receiver is capable of holding. | |
| 4719 * | |
| 4720 * @return the text limit | |
| 4721 * | |
| 4722 * @exception SWTException <ul> | |
| 4723 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4724 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4725 * </ul> | |
| 4726 */ | |
| 4727 public int getTextLimit() { | |
| 4728 checkWidget(); | |
| 4729 return textLimit; | |
| 4730 } | |
| 4731 /** | |
| 4732 * Gets the top index. | |
| 4733 * <p> | |
| 4734 * The top index is the index of the fully visible line that is currently | |
| 4735 * at the top of the widget or the topmost partially visible line if no line is fully visible. | |
| 4736 * The top index changes when the widget is scrolled. Indexing is zero based. | |
| 4737 * </p> | |
| 4738 * | |
| 4739 * @return the index of the top line | |
| 4740 * @exception SWTException <ul> | |
| 4741 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4742 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4743 * </ul> | |
| 4744 */ | |
| 4745 public int getTopIndex() { | |
| 4746 checkWidget(); | |
| 4747 return topIndex; | |
| 4748 } | |
| 4749 /** | |
| 4750 * Gets the top pixel. | |
| 4751 * <p> | |
| 4752 * The top pixel is the pixel position of the line that is | |
| 4753 * currently at the top of the widget. The text widget can be scrolled by pixels | |
| 4754 * by dragging the scroll thumb so that a partial line may be displayed at the top | |
| 4755 * the widget. The top pixel changes when the widget is scrolled. The top pixel | |
| 4756 * does not include the widget trimming. | |
| 4757 * </p> | |
| 4758 * | |
| 4759 * @return pixel position of the top line | |
| 4760 * @exception SWTException <ul> | |
| 4761 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4762 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4763 * </ul> | |
| 4764 */ | |
| 4765 public int getTopPixel() { | |
| 4766 checkWidget(); | |
| 4767 return getVerticalScrollOffset(); | |
| 4768 } | |
| 4769 /** | |
| 4770 * Returns the vertical scroll increment. | |
| 4771 * | |
| 4772 * @return vertical scroll increment. | |
| 4773 */ | |
| 4774 int getVerticalIncrement() { | |
| 4775 return renderer.getLineHeight(); | |
| 4776 } | |
| 4777 int getVerticalScrollOffset() { | |
| 4778 if (verticalScrollOffset is -1) { | |
| 4779 renderer.calculate(0, topIndex); | |
| 4780 int height = 0; | |
| 4781 for (int i = 0; i < topIndex; i++) { | |
| 4782 height += renderer.getLineHeight(i); | |
| 4783 } | |
| 4784 height -= topIndexY; | |
| 4785 verticalScrollOffset = height; | |
| 4786 } | |
| 4787 return verticalScrollOffset; | |
| 4788 } | |
| 4789 int getVisualLineIndex(TextLayout layout, int offsetInLine) { | |
| 4790 int lineIndex = layout.getLineIndex(offsetInLine); | |
| 4791 int[] offsets = layout.getLineOffsets(); | |
| 4792 if (lineIndex !is 0 && offsetInLine is offsets[lineIndex]) { | |
| 4793 int lineY = layout.getLineBounds(lineIndex).y; | |
| 4794 int caretY = getCaret().getLocation().y - topMargin - getLinePixel(getCaretLine()); | |
| 4795 if (lineY > caretY) lineIndex--; | |
| 4796 } | |
| 4797 return lineIndex; | |
| 4798 } | |
| 4799 int getCaretDirection() { | |
| 4800 if (!isBidiCaret()) return SWT.DEFAULT; | |
| 4801 if (ime.getCompositionOffset() !is -1) return SWT.DEFAULT; | |
| 4802 if (!updateCaretDirection && caretDirection !is SWT.NULL) return caretDirection; | |
| 4803 updateCaretDirection = false; | |
| 4804 int caretLine = getCaretLine(); | |
| 4805 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 4806 String line = content.getLine(caretLine); | |
| 4807 int offset = caretOffset - lineOffset; | |
| 4808 int lineLength = line.length; | |
| 4809 if (lineLength is 0) return isMirrored() ? SWT.RIGHT : SWT.LEFT; | |
| 4810 if (caretAlignment is PREVIOUS_OFFSET_TRAILING && offset > 0) offset--; | |
| 4811 if (offset is lineLength && offset > 0) offset--; | |
| 4812 while (offset > 0 && tango.text.Unicode.isDigit(line[offset])) offset--; | |
| 4813 if (offset is 0 && tango.text.Unicode.isDigit(line[offset])) { | |
| 4814 return isMirrored() ? SWT.RIGHT : SWT.LEFT; | |
| 4815 } | |
| 4816 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 4817 int level = layout.getLevel(offset); | |
| 4818 renderer.disposeTextLayout(layout); | |
| 4819 return ((level & 1) !is 0) ? SWT.RIGHT : SWT.LEFT; | |
| 4820 } | |
| 4821 /* | |
| 4822 * Returns the index of the line the caret is on. | |
| 4823 */ | |
| 4824 int getCaretLine() { | |
| 4825 return content.getLineAtOffset(caretOffset); | |
| 4826 } | |
| 4827 int getWrapWidth () { | |
| 4828 if (wordWrap && !isSingleLine()) { | |
| 4829 int width = clientAreaWidth - leftMargin - rightMargin - getCaretWidth(); | |
| 4830 return width > 0 ? width : 1; | |
| 4831 } | |
| 4832 return -1; | |
| 4833 } | |
| 4834 int getWordNext (int offset, int movement) { | |
| 4835 int newOffset, lineOffset; | |
| 4836 String lineText; | |
| 4837 if (offset >= getCharCount()) { | |
| 4838 newOffset = offset; | |
| 4839 int lineIndex = content.getLineCount() - 1; | |
| 4840 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4841 lineText = content.getLine(lineIndex); | |
| 4842 } else { | |
| 4843 int lineIndex = content.getLineAtOffset(offset); | |
| 4844 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4845 lineText = content.getLine(lineIndex); | |
| 4846 int lineLength = lineText.length; | |
| 4847 if (offset is lineOffset + lineLength) { | |
| 4848 newOffset = content.getOffsetAtLine(lineIndex + 1); | |
| 4849 } else { | |
| 4850 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4851 newOffset = lineOffset + layout.getNextOffset(offset - lineOffset, movement); | |
| 4852 renderer.disposeTextLayout(layout); | |
| 4853 } | |
| 4854 } | |
| 4855 return sendWordBoundaryEvent(WordNext, movement, offset, newOffset, lineText, lineOffset); | |
| 4856 } | |
| 4857 int getWordPrevious(int offset, int movement) { | |
| 4858 int newOffset, lineOffset; | |
| 4859 String lineText; | |
| 4860 if (offset <= 0) { | |
| 4861 newOffset = 0; | |
| 4862 int lineIndex = content.getLineAtOffset(newOffset); | |
| 4863 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4864 lineText = content.getLine(lineIndex); | |
| 4865 } else { | |
| 4866 int lineIndex = content.getLineAtOffset(offset); | |
| 4867 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4868 lineText = content.getLine(lineIndex); | |
| 4869 if (offset is lineOffset) { | |
| 4870 String nextLineText = content.getLine(lineIndex - 1); | |
| 4871 int nextLineOffset = content.getOffsetAtLine(lineIndex - 1); | |
| 4872 newOffset = nextLineOffset + nextLineText.length; | |
| 4873 } else { | |
| 4874 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4875 newOffset = lineOffset + layout.getPreviousOffset(offset - lineOffset, movement); | |
| 4876 renderer.disposeTextLayout(layout); | |
| 4877 } | |
| 4878 } | |
| 4879 return sendWordBoundaryEvent(WordPrevious, movement, offset, newOffset, lineText, lineOffset); | |
| 4880 } | |
| 4881 /** | |
| 4882 * Returns whether the widget wraps lines. | |
| 4883 * | |
| 4884 * @return true if widget wraps lines, false otherwise | |
| 4885 * @since 2.0 | |
| 4886 */ | |
| 4887 public bool getWordWrap() { | |
| 4888 checkWidget(); | |
| 4889 return wordWrap; | |
| 4890 } | |
| 4891 /** | |
| 4892 * Returns the location of the given offset. | |
| 4893 * <p> | |
| 4894 * <b>NOTE:</b> Does not return correct values for true italic fonts (vs. slanted fonts). | |
| 4895 * </p> | |
| 4896 * | |
| 4897 * @return location of the character at the given offset in the line. | |
| 4898 */ | |
| 4899 Point getPointAtOffset(int offset) { | |
| 4900 int lineIndex = content.getLineAtOffset(offset); | |
| 4901 String line = content.getLine(lineIndex); | |
| 4902 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4903 int offsetInLine = offset - lineOffset; | |
| 4904 int lineLength = line.length; | |
| 4905 if (lineIndex < content.getLineCount() - 1) { | |
| 4906 int endLineOffset = content.getOffsetAtLine(lineIndex + 1) - 1; | |
| 4907 if (lineLength < offsetInLine && offsetInLine <= endLineOffset) { | |
| 4908 offsetInLine = lineLength; | |
| 4909 } | |
| 4910 } | |
| 4911 Point point; | |
| 4912 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4913 if (lineLength !is 0 && offsetInLine <= lineLength) { | |
| 4914 if (offsetInLine is lineLength) { | |
| 4915 // SWT: Instead of go back one byte, go back one codepoint | |
| 4916 int offsetInLine_m1 = layout.getPreviousOffset(offsetInLine, SWT.MOVEMENT_CLUSTER); | |
| 4917 point = layout.getLocation(offsetInLine_m1, true); | |
| 4918 } else { | |
| 4919 switch (caretAlignment) { | |
| 4920 case OFFSET_LEADING: | |
| 4921 point = layout.getLocation(offsetInLine, false); | |
| 4922 break; | |
| 4923 case PREVIOUS_OFFSET_TRAILING: | |
| 4924 default: | |
| 4925 if (offsetInLine is 0) { | |
| 4926 point = layout.getLocation(offsetInLine, false); | |
| 4927 } else { | |
| 4928 // SWT: Instead of go back one byte, go back one codepoint | |
| 4929 int offsetInLine_m1 = layout.getPreviousOffset(offsetInLine, SWT.MOVEMENT_CLUSTER); | |
| 4930 point = layout.getLocation(offsetInLine_m1, true); | |
| 4931 } | |
| 4932 break; | |
| 4933 } | |
| 4934 } | |
| 4935 } else { | |
| 4936 point = new Point(layout.getIndent(), 0); | |
| 4937 } | |
| 4938 renderer.disposeTextLayout(layout); | |
| 4939 point.x += leftMargin - horizontalScrollOffset; | |
| 4940 point.y += getLinePixel(lineIndex); | |
| 4941 return point; | |
| 4942 } | |
| 4943 /** | |
| 4944 * Inserts a string. The old selection is replaced with the new text. | |
| 4945 * | |
| 4946 * @param string the string | |
| 4947 * @see #replaceTextRange(int,int,String) | |
| 4948 * @exception SWTException <ul> | |
| 4949 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4950 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4951 * </ul> | |
| 4952 */ | |
| 4953 public void insert(String string) { | |
| 4954 checkWidget(); | |
| 4955 // SWT extension: allow null for zero length string | |
| 4956 // if (string is null) { | |
| 4957 // SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 4958 // } | |
| 4959 Point sel = getSelectionRange(); | |
| 4960 replaceTextRange(sel.x, sel.y, string); | |
| 4961 } | |
| 4962 /** | |
| 4963 * Creates content change listeners and set the default content model. | |
| 4964 */ | |
| 4965 void installDefaultContent() { | |
| 4966 textChangeListener = new class() TextChangeListener { | |
| 4967 public void textChanging(TextChangingEvent event) { | |
| 4968 handleTextChanging(event); | |
| 4969 } | |
| 4970 public void textChanged(TextChangedEvent event) { | |
| 4971 handleTextChanged(event); | |
| 4972 } | |
| 4973 public void textSet(TextChangedEvent event) { | |
| 4974 handleTextSet(event); | |
| 4975 } | |
| 4976 }; | |
| 4977 content = new DefaultContent(); | |
| 4978 content.addTextChangeListener(textChangeListener); | |
| 4979 } | |
| 4980 /** | |
| 4981 * Adds event listeners | |
| 4982 */ | |
| 4983 void installListeners() { | |
| 4984 ScrollBar verticalBar = getVerticalBar(); | |
| 4985 ScrollBar horizontalBar = getHorizontalBar(); | |
| 4986 | |
| 4987 listener = new class() Listener { | |
| 4988 public void handleEvent(Event event) { | |
| 4989 switch (event.type) { | |
| 4990 case SWT.Dispose: handleDispose(event); break; | |
| 4991 case SWT.KeyDown: handleKeyDown(event); break; | |
| 4992 case SWT.KeyUp: handleKeyUp(event); break; | |
| 4993 case SWT.MouseDown: handleMouseDown(event); break; | |
| 4994 case SWT.MouseUp: handleMouseUp(event); break; | |
| 4995 case SWT.MouseMove: handleMouseMove(event); break; | |
| 4996 case SWT.Paint: handlePaint(event); break; | |
| 4997 case SWT.Resize: handleResize(event); break; | |
| 4998 case SWT.Traverse: handleTraverse(event); break; | |
| 4999 default: | |
| 5000 } | |
| 5001 } | |
| 5002 }; | |
| 5003 addListener(SWT.Dispose, listener); | |
| 5004 addListener(SWT.KeyDown, listener); | |
| 5005 addListener(SWT.KeyUp, listener); | |
| 5006 addListener(SWT.MouseDown, listener); | |
| 5007 addListener(SWT.MouseUp, listener); | |
| 5008 addListener(SWT.MouseMove, listener); | |
| 5009 addListener(SWT.Paint, listener); | |
| 5010 addListener(SWT.Resize, listener); | |
| 5011 addListener(SWT.Traverse, listener); | |
| 5012 ime.addListener(SWT.ImeComposition, new class() Listener { | |
| 5013 public void handleEvent(Event event) { | |
| 5014 switch (event.detail) { | |
| 5015 case SWT.COMPOSITION_SELECTION: handleCompositionSelection(event); break; | |
| 5016 case SWT.COMPOSITION_CHANGED: handleCompositionChanged(event); break; | |
| 5017 case SWT.COMPOSITION_OFFSET: handleCompositionOffset(event); break; | |
| 5018 default: | |
| 5019 } | |
| 5020 } | |
| 5021 }); | |
| 5022 if (verticalBar !is null) { | |
| 5023 verticalBar.addListener(SWT.Selection, new class() Listener { | |
| 5024 public void handleEvent(Event event) { | |
| 5025 handleVerticalScroll(event); | |
| 5026 } | |
| 5027 }); | |
| 5028 } | |
| 5029 if (horizontalBar !is null) { | |
| 5030 horizontalBar.addListener(SWT.Selection, new class() Listener { | |
| 5031 public void handleEvent(Event event) { | |
| 5032 handleHorizontalScroll(event); | |
| 5033 } | |
| 5034 }); | |
| 5035 } | |
| 5036 } | |
| 5037 void internalRedrawRange(int start, int length) { | |
| 5038 if (length <= 0) return; | |
| 5039 int end = start + length; | |
| 5040 int startLine = content.getLineAtOffset(start); | |
| 5041 int endLine = content.getLineAtOffset(end); | |
| 5042 int partialBottomIndex = getPartialBottomIndex(); | |
| 5043 int partialTopIndex = getPartialTopIndex(); | |
| 5044 if (startLine > partialBottomIndex || endLine < partialTopIndex) { | |
| 5045 return; | |
| 5046 } | |
| 5047 if (partialTopIndex > startLine) { | |
| 5048 startLine = partialTopIndex; | |
| 5049 start = 0; | |
| 5050 } else { | |
| 5051 start -= content.getOffsetAtLine(startLine); | |
| 5052 } | |
| 5053 if (partialBottomIndex < endLine) { | |
| 5054 endLine = partialBottomIndex + 1; | |
| 5055 end = 0; | |
| 5056 } else { | |
| 5057 end -= content.getOffsetAtLine(endLine); | |
| 5058 } | |
| 5059 | |
| 5060 TextLayout layout = renderer.getTextLayout(startLine); | |
| 5061 int lineX = leftMargin - horizontalScrollOffset, startLineY = getLinePixel(startLine); | |
| 5062 int[] offsets = layout.getLineOffsets(); | |
| 5063 int startIndex = layout.getLineIndex(Math.min(start, layout.getText().length)); | |
| 5064 | |
| 5065 /* Redraw end of line before start line if wrapped and start offset is first char */ | |
| 5066 if (wordWrap && startIndex > 0 && offsets[startIndex] is start) { | |
| 5067 Rectangle rect = layout.getLineBounds(startIndex - 1); | |
| 5068 rect.x = rect.width; | |
| 5069 rect.width = clientAreaWidth - rightMargin - rect.x; | |
| 5070 rect.x += lineX; | |
| 5071 rect.y += startLineY; | |
| 5072 super.redraw(rect.x, rect.y, rect.width, rect.height, false); | |
| 5073 } | |
| 5074 | |
| 5075 if (startLine is endLine) { | |
| 5076 int endIndex = layout.getLineIndex(Math.min(end, layout.getText().length)); | |
| 5077 if (startIndex is endIndex) { | |
| 5078 /* Redraw rect between start and end offset if start and end offsets are in same wrapped line */ | |
| 5079 Rectangle rect = layout.getBounds(start, end - 1); | |
| 5080 rect.x += lineX; | |
| 5081 rect.y += startLineY; | |
| 5082 super.redraw(rect.x, rect.y, rect.width, rect.height, false); | |
| 5083 renderer.disposeTextLayout(layout); | |
| 5084 return; | |
| 5085 } | |
| 5086 } | |
| 5087 | |
| 5088 /* Redraw start line from the start offset to the end of client area */ | |
| 5089 Rectangle startRect = layout.getBounds(start, offsets[startIndex + 1] - 1); | |
| 5090 if (startRect.height is 0) { | |
| 5091 Rectangle bounds = layout.getLineBounds(startIndex); | |
| 5092 startRect.x = bounds.width; | |
| 5093 startRect.y = bounds.y; | |
| 5094 startRect.height = bounds.height; | |
| 5095 } | |
| 5096 startRect.x += lineX; | |
| 5097 startRect.y += startLineY; | |
| 5098 startRect.width = clientAreaWidth - rightMargin - startRect.x; | |
| 5099 super.redraw(startRect.x, startRect.y, startRect.width, startRect.height, false); | |
| 5100 | |
| 5101 /* Redraw end line from the beginning of the line to the end offset */ | |
| 5102 if (startLine !is endLine) { | |
| 5103 renderer.disposeTextLayout(layout); | |
| 5104 layout = renderer.getTextLayout(endLine); | |
| 5105 offsets = layout.getLineOffsets(); | |
| 5106 } | |
| 5107 int endIndex = layout.getLineIndex(Math.min(end, layout.getText().length)); | |
| 5108 Rectangle endRect = layout.getBounds(offsets[endIndex], end - 1); | |
| 5109 if (endRect.height is 0) { | |
| 5110 Rectangle bounds = layout.getLineBounds(endIndex); | |
| 5111 endRect.y = bounds.y; | |
| 5112 endRect.height = bounds.height; | |
| 5113 } | |
| 5114 endRect.x += lineX; | |
| 5115 endRect.y += getLinePixel(endLine); | |
| 5116 super.redraw(endRect.x, endRect.y, endRect.width, endRect.height, false); | |
| 5117 renderer.disposeTextLayout(layout); | |
| 5118 | |
| 5119 /* Redraw all lines in between start and end line */ | |
| 5120 int y = startRect.y + startRect.height; | |
| 5121 if (endRect.y > y) { | |
| 5122 super.redraw(leftMargin, y, clientAreaWidth - rightMargin - leftMargin, endRect.y - y, false); | |
| 5123 } | |
| 5124 } | |
| 5125 void handleCompositionOffset (Event event) { | |
| 5126 int[] trailing = new int [1]; | |
| 5127 event.index = getOffsetAtPoint(event.x, event.y, trailing, true); | |
| 5128 event.count = trailing[0]; | |
| 5129 } | |
| 5130 void handleCompositionSelection (Event event) { | |
| 5131 event.start = selection.x; | |
| 5132 event.end = selection.y; | |
| 5133 event.text = getSelectionText(); | |
| 5134 } | |
| 5135 void handleCompositionChanged(Event event) { | |
| 5136 String text = event.text; | |
| 5137 int start = event.start; | |
| 5138 int end = event.end; | |
| 5139 int length = text.length; | |
| 5140 if (length is ime.getCommitCount()) { | |
| 5141 content.replaceTextRange(start, end - start, ""); | |
| 5142 caretOffset = ime.getCompositionOffset(); | |
| 5143 caretWidth = 0; | |
| 5144 caretDirection = SWT.NULL; | |
| 5145 } else { | |
| 5146 content.replaceTextRange(start, end - start, text); | |
| 5147 caretOffset = ime.getCaretOffset(); | |
| 5148 if (ime.getWideCaret()) { | |
| 5149 start = ime.getCompositionOffset(); | |
| 5150 int lineIndex = getCaretLine(); | |
| 5151 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 5152 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 5153 caretWidth = layout.getBounds(start - lineOffset, start + length - 1 - lineOffset).width; | |
| 5154 renderer.disposeTextLayout(layout); | |
| 5155 } | |
| 5156 } | |
| 5157 showCaret(); | |
| 5158 } | |
| 5159 /** | |
| 5160 * Frees resources. | |
| 5161 */ | |
| 5162 void handleDispose(Event event) { | |
| 5163 removeListener(SWT.Dispose, listener); | |
| 5164 notifyListeners(SWT.Dispose, event); | |
| 5165 event.type = SWT.None; | |
| 5166 | |
| 5167 clipboard.dispose(); | |
| 5168 if (renderer !is null) { | |
| 5169 renderer.dispose(); | |
| 5170 renderer = null; | |
| 5171 } | |
| 5172 if (content !is null) { | |
| 5173 content.removeTextChangeListener(textChangeListener); | |
| 5174 content = null; | |
| 5175 } | |
| 5176 if (defaultCaret !is null) { | |
| 5177 defaultCaret.dispose(); | |
| 5178 defaultCaret = null; | |
| 5179 } | |
| 5180 if (leftCaretBitmap !is null) { | |
| 5181 leftCaretBitmap.dispose(); | |
| 5182 leftCaretBitmap = null; | |
| 5183 } | |
| 5184 if (rightCaretBitmap !is null) { | |
| 5185 rightCaretBitmap.dispose(); | |
| 5186 rightCaretBitmap = null; | |
| 5187 } | |
| 5188 if (isBidiCaret()) { | |
| 5189 BidiUtil.removeLanguageListener(this); | |
| 5190 } | |
| 5191 selectionBackground = null; | |
| 5192 selectionForeground = null; | |
| 5193 textChangeListener = null; | |
| 5194 selection = null; | |
| 5195 doubleClickSelection = null; | |
| 5196 keyActionMap = null; | |
| 5197 background = null; | |
| 5198 foreground = null; | |
| 5199 clipboard = null; | |
| 5200 } | |
| 5201 /** | |
| 5202 * Scrolls the widget horizontally. | |
| 5203 */ | |
| 5204 void handleHorizontalScroll(Event event) { | |
| 5205 int scrollPixel = getHorizontalBar().getSelection() - horizontalScrollOffset; | |
| 5206 scrollHorizontal(scrollPixel, false); | |
| 5207 } | |
| 5208 /** | |
| 5209 * If an action has been registered for the key stroke execute the action. | |
| 5210 * Otherwise, if a character has been entered treat it as new content. | |
| 5211 * | |
| 5212 * @param event keyboard event | |
| 5213 */ | |
| 5214 void handleKey(Event event) { | |
| 5215 int action; | |
| 5216 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 5217 if (event.keyCode !is 0) { | |
| 5218 // special key pressed (e.g., F1) | |
| 5219 action = getKeyBinding(event.keyCode | event.stateMask); | |
| 5220 } else { | |
| 5221 // character key pressed | |
| 5222 action = getKeyBinding(event.character | event.stateMask); | |
| 5223 if (action is SWT.NULL) { | |
| 5224 // see if we have a control character | |
| 5225 if ((event.stateMask & SWT.CTRL) !is 0 && (event.character >= 0) && event.character <= 31) { | |
| 5226 // get the character from the CTRL+char sequence, the control | |
| 5227 // key subtracts 64 from the value of the key that it modifies | |
| 5228 int c = event.character + 64; | |
| 5229 action = getKeyBinding(c | event.stateMask); | |
| 5230 } | |
| 5231 } | |
| 5232 } | |
| 5233 if (action is SWT.NULL) { | |
| 5234 bool ignore = false; | |
| 5235 | |
| 5236 if (IS_CARBON) { | |
| 5237 // Ignore accelerator key combinations (we do not want to | |
| 5238 // insert a character in the text in this instance). Do not | |
| 5239 // ignore COMMAND+ALT combinations since that key sequence | |
| 5240 // produces characters on the mac. | |
| 5241 ignore = (event.stateMask ^ SWT.COMMAND) is 0 || | |
| 5242 (event.stateMask ^ (SWT.COMMAND | SWT.SHIFT)) is 0; | |
| 5243 } else if (IS_MOTIF) { | |
| 5244 // Ignore accelerator key combinations (we do not want to | |
| 5245 // insert a character in the text in this instance). Do not | |
| 5246 // ignore ALT combinations since this key sequence | |
| 5247 // produces characters on motif. | |
| 5248 ignore = (event.stateMask ^ SWT.CTRL) is 0 || | |
| 5249 (event.stateMask ^ (SWT.CTRL | SWT.SHIFT)) is 0; | |
| 5250 } else { | |
| 5251 // Ignore accelerator key combinations (we do not want to | |
| 5252 // insert a character in the text in this instance). Don't | |
| 5253 // ignore CTRL+ALT combinations since that is the Alt Gr | |
| 5254 // key on some keyboards. See bug 20953. | |
| 5255 ignore = (event.stateMask ^ SWT.ALT) is 0 || | |
| 5256 (event.stateMask ^ SWT.CTRL) is 0 || | |
| 5257 (event.stateMask ^ (SWT.ALT | SWT.SHIFT)) is 0 || | |
| 5258 (event.stateMask ^ (SWT.CTRL | SWT.SHIFT)) is 0; | |
| 5259 } | |
| 5260 // -ignore anything below SPACE except for line delimiter keys and tab. | |
| 5261 // -ignore DEL | |
| 5262 if (!ignore && event.character > 31 && event.character !is SWT.DEL || | |
| 5263 event.character is SWT.CR || event.character is SWT.LF || | |
| 5264 event.character is TAB) { | |
| 5265 doContent(event.character); | |
| 5266 update(); | |
| 5267 } | |
| 5268 } else { | |
| 5269 invokeAction(action); | |
| 5270 } | |
| 5271 } | |
| 5272 /** | |
| 5273 * If a VerifyKey listener exists, verify that the key that was entered | |
| 5274 * should be processed. | |
| 5275 * | |
| 5276 * @param event keyboard event | |
| 5277 */ | |
| 5278 void handleKeyDown(Event event) { | |
| 5279 if (clipboardSelection is null) { | |
| 5280 clipboardSelection = new Point(selection.x, selection.y); | |
| 5281 } | |
| 5282 | |
| 5283 Event verifyEvent = new Event(); | |
| 5284 verifyEvent.character = event.character; | |
| 5285 verifyEvent.keyCode = event.keyCode; | |
| 5286 verifyEvent.stateMask = event.stateMask; | |
| 5287 verifyEvent.doit = true; | |
| 5288 notifyListeners(VerifyKey, verifyEvent); | |
| 5289 if (verifyEvent.doit) { | |
| 5290 handleKey(event); | |
| 5291 } | |
| 5292 } | |
| 5293 /** | |
| 5294 * Update the Selection Clipboard. | |
| 5295 * | |
| 5296 * @param event keyboard event | |
| 5297 */ | |
| 5298 void handleKeyUp(Event event) { | |
| 5299 if (clipboardSelection !is null) { | |
| 5300 if (clipboardSelection.x !is selection.x || clipboardSelection.y !is selection.y) { | |
| 5301 try { | |
| 5302 if (selection.y - selection.x > 0) { | |
| 5303 setClipboardContent(selection.x, selection.y - selection.x, DND.SELECTION_CLIPBOARD); | |
| 5304 } | |
| 5305 } catch (SWTError error) { | |
| 5306 // Copy to clipboard failed. This happens when another application | |
| 5307 // is accessing the clipboard while we copy. Ignore the error. | |
| 5308 // Fixes 1GDQAVN | |
| 5309 // Rethrow all other errors. Fixes bug 17578. | |
| 5310 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 5311 throw error; | |
| 5312 } | |
| 5313 } | |
| 5314 } | |
| 5315 } | |
| 5316 clipboardSelection = null; | |
| 5317 } | |
| 5318 /** | |
| 5319 * Updates the caret location and selection if mouse button 1 has been | |
| 5320 * pressed. | |
| 5321 */ | |
| 5322 void handleMouseDown(Event event) { | |
| 5323 //force focus (object support) | |
| 5324 forceFocus(); | |
| 5325 | |
| 5326 //drag detect | |
| 5327 if (dragDetect_ && checkDragDetect(event)) return; | |
| 5328 | |
| 5329 //paste clipboard selection | |
| 5330 if (event.button is 2) { | |
| 5331 auto o = cast(ArrayWrapperString)getClipboardContent(DND.SELECTION_CLIPBOARD); | |
| 5332 String text = o.array; | |
| 5333 if (text !is null && text.length > 0) { | |
| 5334 // position cursor | |
| 5335 doMouseLocationChange(event.x, event.y, false); | |
| 5336 // insert text | |
| 5337 Event e = new Event(); | |
| 5338 e.start = selection.x; | |
| 5339 e.end = selection.y; | |
| 5340 e.text = getModelDelimitedText(text); | |
| 5341 sendKeyEvent(e); | |
| 5342 } | |
| 5343 } | |
| 5344 | |
| 5345 //set selection | |
| 5346 if ((event.button !is 1) || (IS_CARBON && (event.stateMask & SWT.MOD4) !is 0)) { | |
| 5347 return; | |
| 5348 } | |
| 5349 clickCount = event.count; | |
| 5350 if (clickCount is 1) { | |
| 5351 bool select = (event.stateMask & SWT.MOD2) !is 0; | |
| 5352 doMouseLocationChange(event.x, event.y, select); | |
| 5353 } else { | |
| 5354 if (doubleClickEnabled) { | |
| 5355 clearSelection(false); | |
| 5356 int offset = getOffsetAtPoint(event.x, event.y); | |
| 5357 int lineIndex = content.getLineAtOffset(offset); | |
| 5358 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 5359 int lineEnd = content.getCharCount(); | |
| 5360 if (lineIndex + 1 < content.getLineCount()) { | |
| 5361 lineEnd = content.getOffsetAtLine(lineIndex + 1); | |
| 5362 } | |
| 5363 int start, end; | |
| 5364 if ((clickCount & 1) is 0) { | |
| 5365 start = Math.max(0, getWordPrevious(offset, SWT.MOVEMENT_WORD_START)); | |
| 5366 end = Math.min(content.getCharCount(), getWordNext(start, SWT.MOVEMENT_WORD_END)); | |
| 5367 } else { | |
| 5368 start = lineOffset; | |
| 5369 end = lineEnd; | |
| 5370 } | |
| 5371 caretOffset = start; | |
| 5372 resetSelection(); | |
| 5373 caretOffset = end; | |
| 5374 showCaret(); | |
| 5375 doMouseSelection(); | |
| 5376 doubleClickSelection = new Point(selection.x, selection.y); | |
| 5377 } | |
| 5378 } | |
| 5379 } | |
| 5380 /** | |
| 5381 * Updates the caret location and selection if mouse button 1 is pressed | |
| 5382 * during the mouse move. | |
| 5383 */ | |
| 5384 void handleMouseMove(Event event) { | |
| 5385 if (clickCount is 0) return; | |
| 5386 doMouseLocationChange(event.x, event.y, true); | |
| 5387 update(); | |
| 5388 doAutoScroll(event); | |
| 5389 } | |
| 5390 /** | |
| 5391 * Autoscrolling ends when the mouse button is released. | |
| 5392 */ | |
| 5393 void handleMouseUp(Event event) { | |
| 5394 clickCount = 0; | |
| 5395 endAutoScroll(); | |
| 5396 if (event.button is 1) { | |
| 5397 try { | |
| 5398 if (selection.y - selection.x > 0) { | |
| 5399 setClipboardContent(selection.x, selection.y - selection.x, DND.SELECTION_CLIPBOARD); | |
| 5400 } | |
| 5401 } catch (SWTError error) { | |
| 5402 // Copy to clipboard failed. This happens when another application | |
| 5403 // is accessing the clipboard while we copy. Ignore the error. | |
| 5404 // Fixes 1GDQAVN | |
| 5405 // Rethrow all other errors. Fixes bug 17578. | |
| 5406 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 5407 throw error; | |
| 5408 } | |
| 5409 } | |
| 5410 } | |
| 5411 } | |
| 5412 /** | |
| 5413 * Renders the invalidated area specified in the paint event. | |
| 5414 * | |
| 5415 * @param event paint event | |
| 5416 */ | |
| 5417 void handlePaint(Event event) { | |
| 5418 if (event.width is 0 || event.height is 0) return; | |
| 5419 if (clientAreaWidth is 0 || clientAreaHeight is 0) return; | |
| 5420 | |
| 5421 int startLine = getLineIndex(event.y); | |
| 5422 int y = getLinePixel(startLine); | |
| 5423 int endY = event.y + event.height; | |
| 5424 GC gc = event.gc; | |
| 5425 Color background = getBackground(); | |
| 5426 Color foreground = getForeground(); | |
| 5427 if (endY > 0) { | |
| 5428 int lineCount = isSingleLine() ? 1 : content.getLineCount(); | |
| 5429 int x = leftMargin - horizontalScrollOffset; | |
| 5430 for (int i = startLine; y < endY && i < lineCount; i++) { | |
| 5431 y += renderer.drawLine(i, x, y, gc, background, foreground); | |
| 5432 } | |
| 5433 if (y < endY) { | |
| 5434 gc.setBackground(background); | |
| 5435 drawBackground(gc, 0, y, clientAreaWidth, endY - y); | |
| 5436 } | |
| 5437 } | |
| 5438 // fill the margin background | |
| 5439 gc.setBackground(background); | |
| 5440 if (topMargin > 0) { | |
| 5441 drawBackground(gc, 0, 0, clientAreaWidth, topMargin); | |
| 5442 } | |
| 5443 if (bottomMargin > 0) { | |
| 5444 drawBackground(gc, 0, clientAreaHeight - bottomMargin, clientAreaWidth, bottomMargin); | |
| 5445 } | |
| 5446 if (leftMargin > 0) { | |
| 5447 drawBackground(gc, 0, 0, leftMargin, clientAreaHeight); | |
| 5448 } | |
| 5449 if (rightMargin > 0) { | |
| 5450 drawBackground(gc, clientAreaWidth - rightMargin, 0, rightMargin, clientAreaHeight); | |
| 5451 } | |
| 5452 } | |
| 5453 /** | |
| 5454 * Recalculates the scroll bars. Rewraps all lines when in word | |
| 5455 * wrap mode. | |
| 5456 * | |
| 5457 * @param event resize event | |
| 5458 */ | |
| 5459 void handleResize(Event event) { | |
| 5460 int oldHeight = clientAreaHeight; | |
| 5461 int oldWidth = clientAreaWidth; | |
| 5462 Rectangle clientArea = getClientArea(); | |
| 5463 clientAreaHeight = clientArea.height; | |
| 5464 clientAreaWidth = clientArea.width; | |
| 5465 /* Redraw the old or new right/bottom margin if needed */ | |
| 5466 if (oldWidth !is clientAreaWidth) { | |
| 5467 if (rightMargin > 0) { | |
| 5468 int x = (oldWidth < clientAreaWidth ? oldWidth : clientAreaWidth) - rightMargin; | |
| 5469 super.redraw(x, 0, rightMargin, oldHeight, false); | |
| 5470 } | |
| 5471 } | |
| 5472 if (oldHeight !is clientAreaHeight) { | |
| 5473 if (bottomMargin > 0) { | |
| 5474 int y = (oldHeight < clientAreaHeight ? oldHeight : clientAreaHeight) - bottomMargin; | |
| 5475 super.redraw(0, y, oldWidth, bottomMargin, false); | |
| 5476 } | |
| 5477 } | |
| 5478 if (wordWrap) { | |
| 5479 if (oldWidth !is clientAreaWidth) { | |
| 5480 renderer.reset(0, content.getLineCount()); | |
| 5481 verticalScrollOffset = -1; | |
| 5482 renderer.calculateIdle(); | |
| 5483 super.redraw(); | |
| 5484 } | |
| 5485 if (oldHeight !is clientAreaHeight) { | |
| 5486 if (oldHeight is 0) topIndexY = 0; | |
| 5487 setScrollBars(true); | |
| 5488 } | |
| 5489 setCaretLocation(); | |
| 5490 } else { | |
| 5491 renderer.calculateClientArea(); | |
| 5492 setScrollBars(true); | |
| 5493 claimRightFreeSpace(); | |
| 5494 // StyledText allows any value for horizontalScrollOffset when clientArea is zero | |
| 5495 // in setHorizontalPixel() and setHorisontalOffset(). Fixes bug 168429. | |
| 5496 if (clientAreaWidth !is 0) { | |
| 5497 ScrollBar horizontalBar = getHorizontalBar(); | |
| 5498 if (horizontalBar !is null && horizontalBar.getVisible()) { | |
| 5499 if (horizontalScrollOffset !is horizontalBar.getSelection()) { | |
| 5500 horizontalBar.setSelection(horizontalScrollOffset); | |
| 5501 horizontalScrollOffset = horizontalBar.getSelection(); | |
| 5502 } | |
| 5503 } | |
| 5504 } | |
| 5505 } | |
| 5506 claimBottomFreeSpace(); | |
| 5507 //TODO FIX TOP INDEX DURING RESIZE | |
| 5508 // if (oldHeight !is clientAreaHeight || wordWrap) { | |
| 5509 // calculateTopIndex(0); | |
| 5510 // } | |
| 5511 } | |
| 5512 /** | |
| 5513 * Updates the caret position and selection and the scroll bars to reflect | |
| 5514 * the content change. | |
| 5515 */ | |
| 5516 void handleTextChanged(TextChangedEvent event) { | |
| 5517 int offset = ime.getCompositionOffset(); | |
| 5518 if (offset !is -1 && lastTextChangeStart < offset) { | |
| 5519 ime.setCompositionOffset(offset + lastTextChangeNewCharCount - lastTextChangeReplaceCharCount); | |
| 5520 } | |
| 5521 int firstLine = content.getLineAtOffset(lastTextChangeStart); | |
| 5522 resetCache(firstLine, 0); | |
| 5523 if (!isFixedLineHeight() && topIndex > firstLine) { | |
| 5524 topIndex = firstLine; | |
| 5525 topIndexY = 0; | |
| 5526 super.redraw(); | |
| 5527 } else { | |
| 5528 int lastLine = firstLine + lastTextChangeNewLineCount; | |
| 5529 int firstLineTop = getLinePixel(firstLine); | |
| 5530 int newLastLineBottom = getLinePixel(lastLine + 1); | |
| 5531 if (lastLineBottom !is newLastLineBottom) { | |
| 5532 super.redraw(); | |
| 5533 } else { | |
| 5534 super.redraw(0, firstLineTop, clientAreaWidth, newLastLineBottom - firstLineTop, false); | |
| 5535 redrawLinesBullet(renderer.redrawLines); | |
| 5536 } | |
| 5537 } | |
| 5538 renderer.redrawLines = null; | |
| 5539 // update selection/caret location after styles have been changed. | |
| 5540 // otherwise any text measuring could be incorrect | |
| 5541 // | |
| 5542 // also, this needs to be done after all scrolling. Otherwise, | |
| 5543 // selection redraw would be flushed during scroll which is wrong. | |
| 5544 // in some cases new text would be drawn in scroll source area even | |
| 5545 // though the intent is to scroll it. | |
| 5546 updateSelection(lastTextChangeStart, lastTextChangeReplaceCharCount, lastTextChangeNewCharCount); | |
| 5547 if (lastTextChangeReplaceLineCount > 0 || wordWrap) { | |
| 5548 claimBottomFreeSpace(); | |
| 5549 } | |
| 5550 if (lastTextChangeReplaceCharCount > 0) { | |
| 5551 claimRightFreeSpace(); | |
| 5552 } | |
| 5553 } | |
| 5554 /** | |
| 5555 * Updates the screen to reflect a pending content change. | |
| 5556 * | |
| 5557 * @param event .start the start offset of the change | |
| 5558 * @param event .newText text that is going to be inserted or empty String | |
| 5559 * if no text will be inserted | |
| 5560 * @param event .replaceCharCount length of text that is going to be replaced | |
| 5561 * @param event .newCharCount length of text that is going to be inserted | |
| 5562 * @param event .replaceLineCount number of lines that are going to be replaced | |
| 5563 * @param event .newLineCount number of new lines that are going to be inserted | |
| 5564 */ | |
| 5565 void handleTextChanging(TextChangingEvent event) { | |
| 5566 if (event.replaceCharCount < 0) { | |
| 5567 event.start += event.replaceCharCount; | |
| 5568 event.replaceCharCount *= -1; | |
| 5569 } | |
| 5570 lastTextChangeStart = event.start; | |
| 5571 lastTextChangeNewLineCount = event.newLineCount; | |
| 5572 lastTextChangeNewCharCount = event.newCharCount; | |
| 5573 lastTextChangeReplaceLineCount = event.replaceLineCount; | |
| 5574 lastTextChangeReplaceCharCount = event.replaceCharCount; | |
| 5575 int lineIndex = content.getLineAtOffset(event.start); | |
| 5576 int srcY = getLinePixel(lineIndex + event.replaceLineCount + 1); | |
| 5577 int destY = getLinePixel(lineIndex + 1) + event.newLineCount * renderer.getLineHeight(); | |
| 5578 lastLineBottom = destY; | |
| 5579 if (srcY < 0 && destY < 0) { | |
| 5580 lastLineBottom += srcY - destY; | |
| 5581 verticalScrollOffset += destY - srcY; | |
| 5582 calculateTopIndex(destY - srcY); | |
| 5583 setScrollBars(true); | |
| 5584 } else { | |
| 5585 scrollText(srcY, destY); | |
| 5586 } | |
| 5587 | |
| 5588 renderer.textChanging(event); | |
| 5589 | |
| 5590 // Update the caret offset if it is greater than the length of the content. | |
| 5591 // This is necessary since style range API may be called between the | |
| 5592 // handleTextChanging and handleTextChanged events and this API sets the | |
| 5593 // caretOffset. | |
| 5594 int newEndOfText = content.getCharCount() - event.replaceCharCount + event.newCharCount; | |
| 5595 if (caretOffset > newEndOfText) caretOffset = newEndOfText; | |
| 5596 } | |
| 5597 /** | |
| 5598 * Called when the widget content is set programmatically, overwriting | |
| 5599 * the old content. Resets the caret position, selection and scroll offsets. | |
| 5600 * Recalculates the content width and scroll bars. Redraws the widget. | |
| 5601 * | |
| 5602 * @param event text change event. | |
| 5603 */ | |
| 5604 void handleTextSet(TextChangedEvent event) { | |
| 5605 reset(); | |
| 5606 } | |
| 5607 /** | |
| 5608 * Called when a traversal key is pressed. | |
| 5609 * Allow tab next traversal to occur when the widget is in single | |
| 5610 * line mode or in multi line and non-editable mode . | |
| 5611 * When in editable multi line mode we want to prevent the tab | |
| 5612 * traversal and receive the tab key event instead. | |
| 5613 * | |
| 5614 * @param event the event | |
| 5615 */ | |
| 5616 void handleTraverse(Event event) { | |
| 5617 switch (event.detail) { | |
| 5618 case SWT.TRAVERSE_ESCAPE: | |
| 5619 case SWT.TRAVERSE_PAGE_NEXT: | |
| 5620 case SWT.TRAVERSE_PAGE_PREVIOUS: | |
| 5621 event.doit = true; | |
| 5622 break; | |
| 5623 case SWT.TRAVERSE_RETURN: | |
| 5624 case SWT.TRAVERSE_TAB_NEXT: | |
| 5625 case SWT.TRAVERSE_TAB_PREVIOUS: | |
| 5626 if ((getStyle() & SWT.SINGLE) !is 0) { | |
| 5627 event.doit = true; | |
| 5628 } else { | |
| 5629 if (!editable || (event.stateMask & SWT.MODIFIER_MASK) !is 0) { | |
| 5630 event.doit = true; | |
| 5631 } | |
| 5632 } | |
| 5633 break; | |
| 5634 default: | |
| 5635 } | |
| 5636 } | |
| 5637 /** | |
| 5638 * Scrolls the widget vertically. | |
| 5639 */ | |
| 5640 void handleVerticalScroll(Event event) { | |
| 5641 int scrollPixel = getVerticalBar().getSelection() - getVerticalScrollOffset(); | |
| 5642 scrollVertical(scrollPixel, false); | |
| 5643 } | |
| 5644 /** | |
| 5645 * Add accessibility support for the widget. | |
| 5646 */ | |
| 5647 void initializeAccessible() { | |
|
49
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Frank Benoit <benoit@tionex.de>
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diff
changeset
|
5648 Accessible accessible = getAccessible(); |
| 25 | 5649 accessible.addAccessibleListener(new class() AccessibleAdapter { |
| 5650 public void getName (AccessibleEvent e) { | |
| 5651 String name = null; | |
| 5652 Label label = getAssociatedLabel (); | |
| 5653 if (label !is null) { | |
| 5654 name = stripMnemonic (label.getText()); | |
| 5655 } | |
| 5656 e.result = name; | |
| 5657 } | |
| 5658 public void getHelp(AccessibleEvent e) { | |
| 5659 e.result = getToolTipText(); | |
| 5660 } | |
| 5661 public void getKeyboardShortcut(AccessibleEvent e) { | |
| 5662 String shortcut = null; | |
| 5663 Label label = getAssociatedLabel (); | |
| 5664 if (label !is null) { | |
| 5665 String text = label.getText (); | |
| 5666 if (text !is null) { | |
| 5667 dchar mnemonic = _findMnemonic (text); | |
| 5668 if (mnemonic !is '\0') { | |
|
49
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parents:
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diff
changeset
|
5669 shortcut = "Alt+"~String_valueOf( [mnemonic] ); //$NON-NLS-1$ |
| 25 | 5670 } |
| 5671 } | |
| 5672 } | |
| 5673 e.result = shortcut; | |
| 5674 } | |
| 5675 }); | |
| 5676 accessible.addAccessibleTextListener(new class() AccessibleTextAdapter { | |
| 5677 public void getCaretOffset(AccessibleTextEvent e) { | |
| 5678 e.offset = this.outer.getCaretOffset(); | |
| 5679 } | |
| 5680 public void getSelectionRange(AccessibleTextEvent e) { | |
| 5681 Point selection = this.outer.getSelectionRange(); | |
| 5682 e.offset = selection.x; | |
| 5683 e.length = selection.y; | |
| 5684 } | |
| 5685 }); | |
| 5686 accessible.addAccessibleControlListener(new class() AccessibleControlAdapter { | |
| 5687 public void getRole(AccessibleControlEvent e) { | |
| 5688 e.detail = ACC.ROLE_TEXT; | |
| 5689 } | |
| 5690 public void getState(AccessibleControlEvent e) { | |
| 5691 int state = 0; | |
| 5692 if (isEnabled()) state |= ACC.STATE_FOCUSABLE; | |
| 5693 if (isFocusControl()) state |= ACC.STATE_FOCUSED; | |
| 5694 if (!isVisible()) state |= ACC.STATE_INVISIBLE; | |
| 5695 if (!getEditable()) state |= ACC.STATE_READONLY; | |
| 5696 e.detail = state; | |
| 5697 } | |
| 5698 public void getValue(AccessibleControlEvent e) { | |
| 5699 e.result = this.outer.getText(); | |
| 5700 } | |
| 5701 }); | |
| 5702 addListener(SWT.FocusIn, new class(accessible) Listener { | |
| 5703 Accessible acc; | |
| 5704 this( Accessible acc ){ this.acc = acc; } | |
| 5705 public void handleEvent(Event event) { | |
| 5706 acc.setFocus(ACC.CHILDID_SELF); | |
| 5707 } | |
| 5708 }); | |
| 5709 } | |
| 5710 /* | |
| 5711 * Return the Label immediately preceding the receiver in the z-order, | |
| 5712 * or null if none. | |
| 5713 */ | |
| 5714 Label getAssociatedLabel () { | |
| 5715 Control[] siblings = getParent ().getChildren (); | |
| 5716 for (int i = 0; i < siblings.length; i++) { | |
| 5717 if (siblings [i] is this) { | |
| 5718 if (i > 0 && ( null !is cast(Label)siblings [i-1])) { | |
| 5719 return cast(Label) siblings [i-1]; | |
| 5720 } | |
| 5721 } | |
| 5722 } | |
| 5723 return null; | |
| 5724 } | |
| 5725 String stripMnemonic (String string) { | |
| 5726 int index = 0; | |
| 5727 int length_ = string.length; | |
| 5728 do { | |
| 5729 while ((index < length_) && (string[index] !is '&')) index++; | |
| 5730 if (++index >= length_) return string; | |
| 5731 if (string[index] !is '&') { | |
| 5732 return string.substring(0, index-1) ~ string.substring(index, length_); | |
| 5733 } | |
| 5734 index++; | |
| 5735 } while (index < length_); | |
| 5736 return string; | |
| 5737 } | |
| 5738 /* | |
| 5739 * Return the lowercase of the first non-'&' character following | |
| 5740 * an '&' character in the given string. If there are no '&' | |
| 5741 * characters in the given string, return '\0'. | |
| 5742 */ | |
| 5743 dchar _findMnemonic (String string) { | |
| 5744 if (string is null) return '\0'; | |
| 5745 int index = 0; | |
| 5746 int length_ = string.length; | |
| 5747 do { | |
| 5748 while (index < length_ && string[index] !is '&') index++; | |
| 5749 if (++index >= length_) return '\0'; | |
| 5750 if (string[index] !is '&') return CharacterFirstToLower(string[index .. $ ] ); | |
| 5751 index++; | |
| 5752 } while (index < length_); | |
| 5753 return '\0'; | |
| 5754 } | |
| 5755 /** | |
| 5756 * Executes the action. | |
| 5757 * | |
| 5758 * @param action one of the actions defined in ST.java | |
| 5759 */ | |
| 5760 public void invokeAction(int action) { | |
| 5761 checkWidget(); | |
| 5762 updateCaretDirection = true; | |
| 5763 switch (action) { | |
| 5764 // Navigation | |
| 5765 case ST.LINE_UP: | |
| 5766 doLineUp(false); | |
| 5767 clearSelection(true); | |
| 5768 break; | |
| 5769 case ST.LINE_DOWN: | |
| 5770 doLineDown(false); | |
| 5771 clearSelection(true); | |
| 5772 break; | |
| 5773 case ST.LINE_START: | |
| 5774 doLineStart(); | |
| 5775 clearSelection(true); | |
| 5776 break; | |
| 5777 case ST.LINE_END: | |
| 5778 doLineEnd(); | |
| 5779 clearSelection(true); | |
| 5780 break; | |
| 5781 case ST.COLUMN_PREVIOUS: | |
| 5782 doCursorPrevious(); | |
| 5783 clearSelection(true); | |
| 5784 break; | |
| 5785 case ST.COLUMN_NEXT: | |
| 5786 doCursorNext(); | |
| 5787 clearSelection(true); | |
| 5788 break; | |
| 5789 case ST.PAGE_UP: | |
| 5790 doPageUp(false, -1); | |
| 5791 clearSelection(true); | |
| 5792 break; | |
| 5793 case ST.PAGE_DOWN: | |
| 5794 doPageDown(false, -1); | |
| 5795 clearSelection(true); | |
| 5796 break; | |
| 5797 case ST.WORD_PREVIOUS: | |
| 5798 doWordPrevious(); | |
| 5799 clearSelection(true); | |
| 5800 break; | |
| 5801 case ST.WORD_NEXT: | |
| 5802 doWordNext(); | |
| 5803 clearSelection(true); | |
| 5804 break; | |
| 5805 case ST.TEXT_START: | |
| 5806 doContentStart(); | |
| 5807 clearSelection(true); | |
| 5808 break; | |
| 5809 case ST.TEXT_END: | |
| 5810 doContentEnd(); | |
| 5811 clearSelection(true); | |
| 5812 break; | |
| 5813 case ST.WINDOW_START: | |
| 5814 doPageStart(); | |
| 5815 clearSelection(true); | |
| 5816 break; | |
| 5817 case ST.WINDOW_END: | |
| 5818 doPageEnd(); | |
| 5819 clearSelection(true); | |
| 5820 break; | |
| 5821 // Selection | |
| 5822 case ST.SELECT_LINE_UP: | |
| 5823 doSelectionLineUp(); | |
| 5824 break; | |
| 5825 case ST.SELECT_ALL: | |
| 5826 selectAll(); | |
| 5827 break; | |
| 5828 case ST.SELECT_LINE_DOWN: | |
| 5829 doSelectionLineDown(); | |
| 5830 break; | |
| 5831 case ST.SELECT_LINE_START: | |
| 5832 doLineStart(); | |
| 5833 doSelection(ST.COLUMN_PREVIOUS); | |
| 5834 break; | |
| 5835 case ST.SELECT_LINE_END: | |
| 5836 doLineEnd(); | |
| 5837 doSelection(ST.COLUMN_NEXT); | |
| 5838 break; | |
| 5839 case ST.SELECT_COLUMN_PREVIOUS: | |
| 5840 doSelectionCursorPrevious(); | |
| 5841 doSelection(ST.COLUMN_PREVIOUS); | |
| 5842 break; | |
| 5843 case ST.SELECT_COLUMN_NEXT: | |
| 5844 doSelectionCursorNext(); | |
| 5845 doSelection(ST.COLUMN_NEXT); | |
| 5846 break; | |
| 5847 case ST.SELECT_PAGE_UP: | |
| 5848 doSelectionPageUp(-1); | |
| 5849 break; | |
| 5850 case ST.SELECT_PAGE_DOWN: | |
| 5851 doSelectionPageDown(-1); | |
| 5852 break; | |
| 5853 case ST.SELECT_WORD_PREVIOUS: | |
| 5854 doSelectionWordPrevious(); | |
| 5855 doSelection(ST.COLUMN_PREVIOUS); | |
| 5856 break; | |
| 5857 case ST.SELECT_WORD_NEXT: | |
| 5858 doSelectionWordNext(); | |
| 5859 doSelection(ST.COLUMN_NEXT); | |
| 5860 break; | |
| 5861 case ST.SELECT_TEXT_START: | |
| 5862 doContentStart(); | |
| 5863 doSelection(ST.COLUMN_PREVIOUS); | |
| 5864 break; | |
| 5865 case ST.SELECT_TEXT_END: | |
| 5866 doContentEnd(); | |
| 5867 doSelection(ST.COLUMN_NEXT); | |
| 5868 break; | |
| 5869 case ST.SELECT_WINDOW_START: | |
| 5870 doPageStart(); | |
| 5871 doSelection(ST.COLUMN_PREVIOUS); | |
| 5872 break; | |
| 5873 case ST.SELECT_WINDOW_END: | |
| 5874 doPageEnd(); | |
| 5875 doSelection(ST.COLUMN_NEXT); | |
| 5876 break; | |
| 5877 // Modification | |
| 5878 case ST.CUT: | |
| 5879 cut(); | |
| 5880 break; | |
| 5881 case ST.COPY: | |
| 5882 copy(); | |
| 5883 break; | |
| 5884 case ST.PASTE: | |
| 5885 paste(); | |
| 5886 break; | |
| 5887 case ST.DELETE_PREVIOUS: | |
| 5888 doBackspace(); | |
| 5889 break; | |
| 5890 case ST.DELETE_NEXT: | |
| 5891 doDelete(); | |
| 5892 break; | |
| 5893 case ST.DELETE_WORD_PREVIOUS: | |
| 5894 doDeleteWordPrevious(); | |
| 5895 break; | |
| 5896 case ST.DELETE_WORD_NEXT: | |
| 5897 doDeleteWordNext(); | |
| 5898 break; | |
| 5899 // Miscellaneous | |
| 5900 case ST.TOGGLE_OVERWRITE: | |
| 5901 overwrite = !overwrite; // toggle insert/overwrite mode | |
| 5902 break; | |
| 5903 default: | |
| 5904 } | |
| 5905 } | |
| 5906 /** | |
| 5907 * Temporary until SWT provides this | |
| 5908 */ | |
| 5909 bool isBidi() { | |
| 5910 return IS_GTK || IS_CARBON || BidiUtil.isBidiPlatform() || isMirrored_; | |
| 5911 } | |
| 5912 bool isBidiCaret() { | |
| 5913 return BidiUtil.isBidiPlatform(); | |
| 5914 } | |
| 5915 bool isFixedLineHeight() { | |
| 5916 return fixedLineHeight; | |
| 5917 } | |
| 5918 /** | |
| 5919 * Returns whether the given offset is inside a multi byte line delimiter. | |
| 5920 * Example: | |
| 5921 * "Line1\r\n" isLineDelimiter(5) is false but isLineDelimiter(6) is true | |
| 5922 * | |
| 5923 * @return true if the given offset is inside a multi byte line delimiter. | |
| 5924 * false if the given offset is before or after a line delimiter. | |
| 5925 */ | |
| 5926 bool isLineDelimiter(int offset) { | |
| 5927 int line = content.getLineAtOffset(offset); | |
| 5928 int lineOffset = content.getOffsetAtLine(line); | |
| 5929 int offsetInLine = offset - lineOffset; | |
| 5930 // offsetInLine will be greater than line length if the line | |
| 5931 // delimiter is longer than one character and the offset is set | |
| 5932 // in between parts of the line delimiter. | |
| 5933 return offsetInLine > content.getLine(line).length; | |
| 5934 } | |
| 5935 /** | |
| 5936 * Returns whether the widget is mirrored (right oriented/right to left | |
| 5937 * writing order). | |
| 5938 * | |
| 5939 * @return isMirrored true=the widget is right oriented, false=the widget | |
| 5940 * is left oriented | |
| 5941 */ | |
| 5942 bool isMirrored() { | |
| 5943 return isMirrored_; | |
| 5944 } | |
| 5945 /** | |
| 5946 * Returns whether the widget can have only one line. | |
| 5947 * | |
| 5948 * @return true if widget can have only one line, false if widget can have | |
| 5949 * multiple lines | |
| 5950 */ | |
| 5951 bool isSingleLine() { | |
| 5952 return (getStyle() & SWT.SINGLE) !is 0; | |
| 5953 } | |
| 5954 /** | |
| 5955 * Sends the specified verify event, replace/insert text as defined by | |
| 5956 * the event and send a modify event. | |
| 5957 * | |
| 5958 * @param event the text change event. | |
| 5959 * <ul> | |
| 5960 * <li>event.start - the replace start offset</li> | |
| 5961 * <li>event.end - the replace end offset</li> | |
| 5962 * <li>event.text - the new text</li> | |
| 5963 * </ul> | |
| 5964 * @param updateCaret whether or not he caret should be set behind | |
| 5965 * the new text | |
| 5966 */ | |
| 5967 void modifyContent(Event event, bool updateCaret) { | |
| 5968 event.doit = true; | |
| 5969 notifyListeners(SWT.Verify, event); | |
| 5970 if (event.doit) { | |
| 5971 StyledTextEvent styledTextEvent = null; | |
| 5972 int replacedLength = event.end - event.start; | |
| 5973 if (isListening(ExtendedModify)) { | |
| 5974 styledTextEvent = new StyledTextEvent(content); | |
| 5975 styledTextEvent.start = event.start; | |
| 5976 styledTextEvent.end = event.start + event.text.length; | |
| 5977 styledTextEvent.text = content.getTextRange(event.start, replacedLength); | |
| 5978 } | |
| 5979 if (updateCaret) { | |
| 5980 //Fix advancing flag for delete/backspace key on direction boundary | |
| 5981 if (event.text.length is 0) { | |
| 5982 int lineIndex = content.getLineAtOffset(event.start); | |
| 5983 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 5984 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 5985 int levelStart = layout.getLevel(event.start - lineOffset); | |
| 5986 int lineIndexEnd = content.getLineAtOffset(event.end); | |
| 5987 if (lineIndex !is lineIndexEnd) { | |
| 5988 renderer.disposeTextLayout(layout); | |
| 5989 lineOffset = content.getOffsetAtLine(lineIndexEnd); | |
| 5990 layout = renderer.getTextLayout(lineIndexEnd); | |
| 5991 } | |
| 5992 int levelEnd = layout.getLevel(event.end - lineOffset); | |
| 5993 renderer.disposeTextLayout(layout); | |
| 5994 if (levelStart !is levelEnd) { | |
| 5995 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 5996 } else { | |
| 5997 caretAlignment = OFFSET_LEADING; | |
| 5998 } | |
| 5999 } | |
| 6000 } | |
| 6001 content.replaceTextRange(event.start, replacedLength, event.text); | |
| 6002 // set the caret position prior to sending the modify event. | |
| 6003 // fixes 1GBB8NJ | |
| 6004 if (updateCaret) { | |
| 6005 // always update the caret location. fixes 1G8FODP | |
| 6006 setSelection(event.start + event.text.length, 0, true); | |
| 6007 showCaret(); | |
| 6008 } | |
| 6009 sendModifyEvent(event); | |
| 6010 if (isListening(ExtendedModify)) { | |
| 6011 notifyListeners(ExtendedModify, styledTextEvent); | |
| 6012 } | |
| 6013 } | |
| 6014 } | |
| 6015 void paintObject(GC gc, int x, int y, int ascent, int descent, StyleRange style, Bullet bullet, int bulletIndex) { | |
| 6016 if (isListening(PaintObject)) { | |
| 6017 StyledTextEvent event = new StyledTextEvent (content) ; | |
| 6018 event.gc = gc; | |
| 6019 event.x = x; | |
| 6020 event.y = y; | |
| 6021 event.ascent = ascent; | |
| 6022 event.descent = descent; | |
| 6023 event.style = style; | |
| 6024 event.bullet = bullet; | |
| 6025 event.bulletIndex = bulletIndex; | |
| 6026 notifyListeners(PaintObject, event); | |
| 6027 } | |
| 6028 } | |
| 6029 /** | |
| 6030 * Replaces the selection with the text on the <code>DND.CLIPBOARD</code> | |
| 6031 * clipboard or, if there is no selection, inserts the text at the current | |
| 6032 * caret offset. If the widget has the SWT.SINGLE style and the | |
| 6033 * clipboard text contains more than one line, only the first line without | |
| 6034 * line delimiters is inserted in the widget. | |
| 6035 * | |
| 6036 * @exception SWTException <ul> | |
| 6037 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6038 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6039 * </ul> | |
| 6040 */ | |
| 6041 public void paste(){ | |
| 6042 checkWidget(); | |
| 6043 String text = null; | |
| 6044 if( auto o = cast(ArrayWrapperString) getClipboardContent(DND.CLIPBOARD)){ | |
| 6045 text = o.array; | |
| 6046 } | |
| 6047 if (text !is null && text.length > 0) { | |
| 6048 Event event = new Event(); | |
| 6049 event.start = selection.x; | |
| 6050 event.end = selection.y; | |
| 6051 event.text = getModelDelimitedText(text); | |
| 6052 sendKeyEvent(event); | |
| 6053 } | |
| 6054 } | |
| 6055 /** | |
| 6056 * Prints the widget's text to the default printer. | |
| 6057 * | |
| 6058 * @exception SWTException <ul> | |
| 6059 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6060 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6061 * </ul> | |
| 6062 */ | |
| 6063 public void print() { | |
| 6064 checkWidget(); | |
| 6065 Printer printer = new Printer(); | |
| 6066 StyledTextPrintOptions options = new StyledTextPrintOptions(); | |
| 6067 options.printTextForeground = true; | |
| 6068 options.printTextBackground = true; | |
| 6069 options.printTextFontStyle = true; | |
| 6070 options.printLineBackground = true; | |
| 6071 (new Printing(this, printer, options)).run(); | |
| 6072 printer.dispose(); | |
| 6073 } | |
| 6074 /** | |
| 6075 * Returns a runnable that will print the widget's text | |
| 6076 * to the specified printer. | |
| 6077 * <p> | |
| 6078 * The runnable may be run in a non-UI thread. | |
| 6079 * </p> | |
| 6080 * | |
| 6081 * @param printer the printer to print to | |
| 6082 * | |
| 6083 * @return a <code>Runnable</code> for printing the receiver's text | |
| 6084 * | |
| 6085 * @exception SWTException <ul> | |
| 6086 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6087 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6088 * </ul> | |
| 6089 * @exception IllegalArgumentException <ul> | |
| 6090 * <li>ERROR_NULL_ARGUMENT when printer is null</li> | |
| 6091 * </ul> | |
| 6092 */ | |
| 6093 public Runnable print(Printer printer) { | |
| 6094 checkWidget(); | |
| 6095 if (printer is null) { | |
| 6096 SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6097 } | |
| 6098 StyledTextPrintOptions options = new StyledTextPrintOptions(); | |
| 6099 options.printTextForeground = true; | |
| 6100 options.printTextBackground = true; | |
| 6101 options.printTextFontStyle = true; | |
| 6102 options.printLineBackground = true; | |
| 6103 return print(printer, options); | |
| 6104 } | |
| 6105 /** | |
| 6106 * Returns a runnable that will print the widget's text | |
| 6107 * to the specified printer. | |
| 6108 * <p> | |
| 6109 * The runnable may be run in a non-UI thread. | |
| 6110 * </p> | |
| 6111 * | |
| 6112 * @param printer the printer to print to | |
| 6113 * @param options print options to use during printing | |
| 6114 * | |
| 6115 * @return a <code>Runnable</code> for printing the receiver's text | |
| 6116 * | |
| 6117 * @exception SWTException <ul> | |
| 6118 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6119 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6120 * </ul> | |
| 6121 * @exception IllegalArgumentException <ul> | |
| 6122 * <li>ERROR_NULL_ARGUMENT when printer or options is null</li> | |
| 6123 * </ul> | |
| 6124 * @since 2.1 | |
| 6125 */ | |
| 6126 public Runnable print(Printer printer, StyledTextPrintOptions options) { | |
| 6127 checkWidget(); | |
| 6128 if (printer is null || options is null) { | |
| 6129 SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6130 } | |
| 6131 return new Printing(this, printer, options); | |
| 6132 } | |
| 6133 /** | |
| 6134 * Causes the entire bounds of the receiver to be marked | |
| 6135 * as needing to be redrawn. The next time a paint request | |
| 6136 * is processed, the control will be completely painted. | |
| 6137 * <p> | |
| 6138 * Recalculates the content width for all lines in the bounds. | |
| 6139 * When a <code>LineStyleListener</code> is used a redraw call | |
| 6140 * is the only notification to the widget that styles have changed | |
| 6141 * and that the content width may have changed. | |
| 6142 * </p> | |
| 6143 * | |
| 6144 * @exception SWTException <ul> | |
| 6145 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6146 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6147 * </ul> | |
| 6148 * | |
| 6149 * @see Control#update() | |
| 6150 */ | |
| 6151 public override void redraw() { | |
| 6152 super.redraw(); | |
| 6153 int itemCount = getPartialBottomIndex() - topIndex + 1; | |
| 6154 renderer.reset(topIndex, itemCount); | |
| 6155 renderer.calculate(topIndex, itemCount); | |
| 6156 setScrollBars(false); | |
| 6157 } | |
| 6158 /** | |
| 6159 * Causes the rectangular area of the receiver specified by | |
| 6160 * the arguments to be marked as needing to be redrawn. | |
| 6161 * The next time a paint request is processed, that area of | |
| 6162 * the receiver will be painted. If the <code>all</code> flag | |
| 6163 * is <code>true</code>, any children of the receiver which | |
| 6164 * intersect with the specified area will also paint their | |
| 6165 * intersecting areas. If the <code>all</code> flag is | |
| 6166 * <code>false</code>, the children will not be painted. | |
| 6167 * <p> | |
| 6168 * Marks the content width of all lines in the specified rectangle | |
| 6169 * as unknown. Recalculates the content width of all visible lines. | |
| 6170 * When a <code>LineStyleListener</code> is used a redraw call | |
| 6171 * is the only notification to the widget that styles have changed | |
| 6172 * and that the content width may have changed. | |
| 6173 * </p> | |
| 6174 * | |
| 6175 * @param x the x coordinate of the area to draw | |
| 6176 * @param y the y coordinate of the area to draw | |
| 6177 * @param width the width of the area to draw | |
| 6178 * @param height the height of the area to draw | |
| 6179 * @param all <code>true</code> if children should redraw, and <code>false</code> otherwise | |
| 6180 * | |
| 6181 * @exception SWTException <ul> | |
| 6182 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6183 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6184 * </ul> | |
| 6185 * | |
| 6186 * @see Control#update() | |
| 6187 */ | |
| 6188 public override void redraw(int x, int y, int width, int height, bool all) { | |
| 6189 super.redraw(x, y, width, height, all); | |
| 6190 if (height > 0) { | |
| 6191 int firstLine = getLineIndex(y); | |
| 6192 int lastLine = getLineIndex(y + height); | |
| 6193 resetCache(firstLine, lastLine - firstLine + 1); | |
| 6194 } | |
| 6195 } | |
| 6196 void redrawLines(int startLine, int lineCount) { | |
| 6197 // do nothing if redraw range is completely invisible | |
| 6198 int partialBottomIndex = getPartialBottomIndex(); | |
| 6199 if (startLine > partialBottomIndex || startLine + lineCount - 1 < topIndex) { | |
| 6200 return; | |
| 6201 } | |
| 6202 // only redraw visible lines | |
| 6203 if (startLine < topIndex) { | |
| 6204 lineCount -= topIndex - startLine; | |
| 6205 startLine = topIndex; | |
| 6206 } | |
| 6207 if (startLine + lineCount - 1 > partialBottomIndex) { | |
| 6208 lineCount = partialBottomIndex - startLine + 1; | |
| 6209 } | |
| 6210 startLine -= topIndex; | |
| 6211 int redrawTop = getLinePixel(startLine); | |
| 6212 int redrawBottom = getLinePixel(startLine + lineCount); | |
| 6213 int redrawWidth = clientAreaWidth - leftMargin - rightMargin; | |
| 6214 super.redraw(leftMargin, redrawTop, redrawWidth, redrawBottom - redrawTop, true); | |
| 6215 } | |
| 6216 void redrawLinesBullet (int[] redrawLines) { | |
| 6217 if (redrawLines is null) return; | |
| 6218 int topIndex = getPartialTopIndex(); | |
| 6219 int bottomIndex = getPartialBottomIndex(); | |
| 6220 for (int i = 0; i < redrawLines.length; i++) { | |
| 6221 int lineIndex = redrawLines[i]; | |
| 6222 if (!(topIndex <= lineIndex && lineIndex <= bottomIndex)) continue; | |
| 6223 int width = -1; | |
| 6224 Bullet bullet = renderer.getLineBullet(lineIndex, null); | |
| 6225 if (bullet !is null) { | |
| 6226 StyleRange style = bullet.style; | |
| 6227 GlyphMetrics metrics = style.metrics; | |
| 6228 width = metrics.width; | |
| 6229 } | |
| 6230 if (width is -1) width = getClientArea().width; | |
| 6231 int height = renderer.getLineHeight(lineIndex); | |
| 6232 int y = getLinePixel(lineIndex); | |
| 6233 super.redraw(0, y, width, height, false); | |
| 6234 } | |
| 6235 } | |
| 6236 /** | |
| 6237 * Redraws the specified text range. | |
| 6238 * | |
| 6239 * @param start offset of the first character to redraw | |
| 6240 * @param length number of characters to redraw | |
| 6241 * @param clearBackground true if the background should be cleared as | |
| 6242 * part of the redraw operation. If true, the entire redraw range will | |
| 6243 * be cleared before anything is redrawn. If the redraw range includes | |
| 6244 * the last character of a line (i.e., the entire line is redrawn) the | |
| 6245 * line is cleared all the way to the right border of the widget. | |
| 6246 * The redraw operation will be faster and smoother if clearBackground | |
| 6247 * is set to false. Whether or not the flag can be set to false depends | |
| 6248 * on the type of change that has taken place. If font styles or | |
| 6249 * background colors for the redraw range have changed, clearBackground | |
| 6250 * should be set to true. If only foreground colors have changed for | |
| 6251 * the redraw range, clearBackground can be set to false. | |
| 6252 * @exception SWTException <ul> | |
| 6253 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6254 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6255 * </ul> | |
| 6256 * @exception IllegalArgumentException <ul> | |
| 6257 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 6258 * </ul> | |
| 6259 */ | |
| 6260 public void redrawRange(int start, int length, bool clearBackground) { | |
| 6261 checkWidget(); | |
| 6262 int end = start + length; | |
| 6263 int contentLength = content.getCharCount(); | |
| 6264 if (start > end || start < 0 || end > contentLength) { | |
| 6265 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 6266 } | |
| 6267 int firstLine = content.getLineAtOffset(start); | |
| 6268 int lastLine = content.getLineAtOffset(end); | |
| 6269 resetCache(firstLine, lastLine - firstLine + 1); | |
| 6270 internalRedrawRange(start, length); | |
| 6271 } | |
| 6272 /** | |
| 6273 * Removes the specified bidirectional segment listener. | |
| 6274 * | |
| 6275 * @param listener the listener which should no longer be notified | |
| 6276 * | |
| 6277 * @exception SWTException <ul> | |
| 6278 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6279 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6280 * </ul> | |
| 6281 * @exception IllegalArgumentException <ul> | |
| 6282 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6283 * </ul> | |
| 6284 * | |
| 6285 * @since 2.0 | |
| 6286 */ | |
| 6287 public void removeBidiSegmentListener(BidiSegmentListener listener) { | |
| 6288 checkWidget(); | |
| 6289 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6290 removeListener(LineGetSegments, listener); | |
| 6291 } | |
| 6292 /** | |
| 6293 * Removes the specified extended modify listener. | |
| 6294 * | |
| 6295 * @param extendedModifyListener the listener which should no longer be notified | |
| 6296 * | |
| 6297 * @exception SWTException <ul> | |
| 6298 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6299 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6300 * </ul> | |
| 6301 * @exception IllegalArgumentException <ul> | |
| 6302 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6303 * </ul> | |
| 6304 */ | |
| 6305 public void removeExtendedModifyListener(ExtendedModifyListener extendedModifyListener) { | |
| 6306 checkWidget(); | |
| 6307 if (extendedModifyListener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6308 removeListener(ExtendedModify, extendedModifyListener); | |
| 6309 } | |
| 6310 /** | |
| 6311 * Removes the specified line background listener. | |
| 6312 * | |
| 6313 * @param listener the listener which should no longer be notified | |
| 6314 * | |
| 6315 * @exception SWTException <ul> | |
| 6316 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6317 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6318 * </ul> | |
| 6319 * @exception IllegalArgumentException <ul> | |
| 6320 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6321 * </ul> | |
| 6322 */ | |
| 6323 public void removeLineBackgroundListener(LineBackgroundListener listener) { | |
| 6324 checkWidget(); | |
| 6325 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6326 removeListener(LineGetBackground, listener); | |
| 6327 } | |
| 6328 /** | |
| 6329 * Removes the specified line style listener. | |
| 6330 * | |
| 6331 * @param listener the listener which should no longer be notified | |
| 6332 * | |
| 6333 * @exception SWTException <ul> | |
| 6334 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6335 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6336 * </ul> | |
| 6337 * @exception IllegalArgumentException <ul> | |
| 6338 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6339 * </ul> | |
| 6340 */ | |
| 6341 public void removeLineStyleListener(LineStyleListener listener) { | |
| 6342 checkWidget(); | |
| 6343 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6344 removeListener(LineGetStyle, listener); | |
| 6345 } | |
| 6346 /** | |
| 6347 * Removes the specified modify listener. | |
| 6348 * | |
| 6349 * @param modifyListener the listener which should no longer be notified | |
| 6350 * | |
| 6351 * @exception SWTException <ul> | |
| 6352 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6353 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6354 * </ul> | |
| 6355 * @exception IllegalArgumentException <ul> | |
| 6356 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6357 * </ul> | |
| 6358 */ | |
| 6359 public void removeModifyListener(ModifyListener modifyListener) { | |
| 6360 checkWidget(); | |
| 6361 if (modifyListener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6362 removeListener(SWT.Modify, modifyListener); | |
| 6363 } | |
| 6364 /** | |
| 6365 * Removes the specified listener. | |
| 6366 * | |
| 6367 * @param listener the listener which should no longer be notified | |
| 6368 * | |
| 6369 * @exception SWTException <ul> | |
| 6370 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6371 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6372 * </ul> | |
| 6373 * @exception IllegalArgumentException <ul> | |
| 6374 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6375 * </ul> | |
| 6376 * @since 3.2 | |
| 6377 */ | |
| 6378 public void removePaintObjectListener(PaintObjectListener listener) { | |
| 6379 checkWidget(); | |
| 6380 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6381 removeListener(PaintObject, listener); | |
| 6382 } | |
| 6383 /** | |
| 6384 * Removes the listener from the collection of listeners who will | |
| 6385 * be notified when the user changes the receiver's selection. | |
| 6386 * | |
| 6387 * @param listener the listener which should no longer be notified | |
| 6388 * | |
| 6389 * @exception IllegalArgumentException <ul> | |
| 6390 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 6391 * </ul> | |
| 6392 * @exception SWTException <ul> | |
| 6393 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6394 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6395 * </ul> | |
| 6396 * | |
| 6397 * @see SelectionListener | |
| 6398 * @see #addSelectionListener | |
| 6399 */ | |
| 6400 public void removeSelectionListener(SelectionListener listener) { | |
| 6401 checkWidget(); | |
| 6402 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6403 removeListener(SWT.Selection, listener); | |
| 6404 } | |
| 6405 /** | |
| 6406 * Removes the specified verify listener. | |
| 6407 * | |
| 6408 * @param verifyListener the listener which should no longer be notified | |
| 6409 * | |
| 6410 * @exception SWTException <ul> | |
| 6411 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6412 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6413 * </ul> | |
| 6414 * @exception IllegalArgumentException <ul> | |
| 6415 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6416 * </ul> | |
| 6417 */ | |
| 6418 public void removeVerifyListener(VerifyListener verifyListener) { | |
| 6419 checkWidget(); | |
| 6420 if (verifyListener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6421 removeListener(SWT.Verify, verifyListener); | |
| 6422 } | |
| 6423 /** | |
| 6424 * Removes the specified key verify listener. | |
| 6425 * | |
| 6426 * @param listener the listener which should no longer be notified | |
| 6427 * | |
| 6428 * @exception SWTException <ul> | |
| 6429 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6430 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6431 * </ul> | |
| 6432 * @exception IllegalArgumentException <ul> | |
| 6433 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6434 * </ul> | |
| 6435 */ | |
| 6436 public void removeVerifyKeyListener(VerifyKeyListener listener) { | |
| 6437 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6438 removeListener(VerifyKey, listener); | |
| 6439 } | |
| 6440 /** | |
| 6441 * Removes the specified word movement listener. | |
| 6442 * | |
| 6443 * @param listener the listener which should no longer be notified | |
| 6444 * | |
| 6445 * @exception SWTException <ul> | |
| 6446 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6447 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6448 * </ul> | |
| 6449 * @exception IllegalArgumentException <ul> | |
| 6450 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6451 * </ul> | |
| 6452 * | |
| 6453 * @see MovementEvent | |
| 6454 * @see MovementListener | |
| 6455 * @see #addWordMovementListener | |
| 6456 * | |
| 6457 * @since 3.3 | |
| 6458 */ | |
| 6459 | |
| 6460 public void removeWordMovementListener(MovementListener listener) { | |
| 6461 checkWidget(); | |
| 6462 if (listener is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6463 removeListener(WordNext, listener); | |
| 6464 removeListener(WordPrevious, listener); | |
| 6465 } | |
| 6466 /** | |
| 6467 * Replaces the styles in the given range with new styles. This method | |
| 6468 * effectively deletes the styles in the given range and then adds the | |
| 6469 * the new styles. | |
| 6470 * <p> | |
| 6471 * Note: Because a StyleRange includes the start and length, the | |
| 6472 * same instance cannot occur multiple times in the array of styles. | |
| 6473 * If the same style attributes, such as font and color, occur in | |
| 6474 * multiple StyleRanges, <code>setStyleRanges(int, int, int[], StyleRange[])</code> | |
| 6475 * can be used to share styles and reduce memory usage. | |
| 6476 * </p><p> | |
| 6477 * Should not be called if a LineStyleListener has been set since the | |
| 6478 * listener maintains the styles. | |
| 6479 * </p> | |
| 6480 * | |
| 6481 * @param start offset of first character where styles will be deleted | |
| 6482 * @param length length of the range to delete styles in | |
| 6483 * @param ranges StyleRange objects containing the new style information. | |
| 6484 * The ranges should not overlap and should be within the specified start | |
| 6485 * and length. The style rendering is undefined if the ranges do overlap | |
| 6486 * or are ill-defined. Must not be null. | |
| 6487 * @exception SWTException <ul> | |
| 6488 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6489 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6490 * </ul> | |
| 6491 * @exception IllegalArgumentException <ul> | |
| 6492 * <li>ERROR_INVALID_RANGE when either start or end is outside the valid range (0 <= offset <= getCharCount())</li> | |
| 6493 * </ul> | |
| 6494 * | |
| 6495 * @since 2.0 | |
| 6496 * | |
| 6497 * @see #setStyleRanges(int, int, int[], StyleRange[]) | |
| 6498 */ | |
| 6499 public void replaceStyleRanges(int start, int length, StyleRange[] ranges) { | |
| 6500 checkWidget(); | |
| 6501 if (isListening(LineGetStyle)) return; | |
| 6502 // SWT extension: allow null for zero length string | |
| 6503 //if (ranges is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6504 setStyleRanges(start, length, null, ranges, false); | |
| 6505 } | |
| 6506 /** | |
| 6507 * Replaces the given text range with new text. | |
| 6508 * If the widget has the SWT.SINGLE style and "text" contains more than | |
| 6509 * one line, only the first line is rendered but the text is stored | |
| 6510 * unchanged. A subsequent call to getText will return the same text | |
| 6511 * that was set. Note that only a single line of text should be set when | |
| 6512 * the SWT.SINGLE style is used. | |
| 6513 * <p> | |
| 6514 * <b>NOTE:</b> During the replace operation the current selection is | |
| 6515 * changed as follows: | |
| 6516 * <ul> | |
| 6517 * <li>selection before replaced text: selection unchanged | |
| 6518 * <li>selection after replaced text: adjust the selection so that same text | |
| 6519 * remains selected | |
| 6520 * <li>selection intersects replaced text: selection is cleared and caret | |
| 6521 * is placed after inserted text | |
| 6522 * </ul> | |
| 6523 * </p> | |
| 6524 * | |
| 6525 * @param start offset of first character to replace | |
| 6526 * @param length number of characters to replace. Use 0 to insert text | |
| 6527 * @param text new text. May be empty to delete text. | |
| 6528 * @exception SWTException <ul> | |
| 6529 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6530 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6531 * </ul> | |
| 6532 * @exception IllegalArgumentException <ul> | |
| 6533 * <li>ERROR_INVALID_RANGE when either start or end is outside the valid range (0 <= offset <= getCharCount())</li> | |
| 6534 * <li>ERROR_INVALID_ARGUMENT when either start or end is inside a multi byte line delimiter. | |
| 6535 * 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> | |
| 6536 * </ul> | |
| 6537 */ | |
| 6538 public void replaceTextRange(int start, int length, String text) { | |
| 6539 checkWidget(); | |
| 6540 // SWT extension: allow null for zero length string | |
| 6541 // if (text is null) { | |
| 6542 // SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 6543 // } | |
| 6544 int contentLength = getCharCount(); | |
| 6545 int end = start + length; | |
| 6546 if (start > end || start < 0 || end > contentLength) { | |
| 6547 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 6548 } | |
| 6549 Event event = new Event(); | |
| 6550 event.start = start; | |
| 6551 event.end = end; | |
| 6552 event.text = text; | |
| 6553 modifyContent(event, false); | |
| 6554 } | |
| 6555 /** | |
| 6556 * Resets the caret position, selection and scroll offsets. Recalculate | |
| 6557 * the content width and scroll bars. Redraw the widget. | |
| 6558 */ | |
| 6559 void reset() { | |
| 6560 ScrollBar verticalBar = getVerticalBar(); | |
| 6561 ScrollBar horizontalBar = getHorizontalBar(); | |
| 6562 caretOffset = 0; | |
| 6563 topIndex = 0; | |
| 6564 topIndexY = 0; | |
| 6565 verticalScrollOffset = 0; | |
| 6566 horizontalScrollOffset = 0; | |
| 6567 resetSelection(); | |
| 6568 renderer.setContent(content); | |
| 6569 if (verticalBar !is null) { | |
| 6570 verticalBar.setSelection(0); | |
| 6571 } | |
| 6572 if (horizontalBar !is null) { | |
| 6573 horizontalBar.setSelection(0); | |
| 6574 } | |
| 6575 resetCache(0, 0); | |
| 6576 setCaretLocation(); | |
| 6577 super.redraw(); | |
| 6578 } | |
| 6579 void resetCache(int firstLine, int count) { | |
| 6580 int maxLineIndex = renderer.maxWidthLineIndex; | |
| 6581 renderer.reset(firstLine, count); | |
| 6582 renderer.calculateClientArea(); | |
| 6583 if (0 <= maxLineIndex && maxLineIndex < content.getLineCount()) { | |
| 6584 renderer.calculate(maxLineIndex, 1); | |
| 6585 } | |
| 6586 setScrollBars(true); | |
| 6587 if (!isFixedLineHeight()) { | |
| 6588 if (topIndex > firstLine) { | |
| 6589 verticalScrollOffset = -1; | |
| 6590 } | |
| 6591 renderer.calculateIdle(); | |
| 6592 } | |
| 6593 } | |
| 6594 /** | |
| 6595 * Resets the selection. | |
| 6596 */ | |
| 6597 void resetSelection() { | |
| 6598 selection.x = selection.y = caretOffset; | |
| 6599 selectionAnchor = -1; | |
| 6600 } | |
| 6601 | |
| 6602 public override void scroll(int destX, int destY, int x, int y, int width, int height, bool all) { | |
| 6603 super.scroll(destX, destY, x, y, width, height, false); | |
| 6604 if (all) { | |
| 6605 int deltaX = destX - x, deltaY = destY - y; | |
| 6606 Control[] children = getChildren(); | |
| 6607 for (int i=0; i<children.length; i++) { | |
| 6608 Control child = children[i]; | |
| 6609 Rectangle rect = child.getBounds(); | |
| 6610 child.setLocation(rect.x + deltaX, rect.y + deltaY); | |
| 6611 } | |
| 6612 } | |
| 6613 } | |
| 6614 | |
| 6615 /** | |
| 6616 * Scrolls the widget horizontally. | |
| 6617 * | |
| 6618 * @param pixels number of pixels to scroll, > 0 = scroll left, | |
| 6619 * < 0 scroll right | |
| 6620 * @param adjustScrollBar | |
| 6621 * true= the scroll thumb will be moved to reflect the new scroll offset. | |
| 6622 * false = the scroll thumb will not be moved | |
| 6623 * @return | |
| 6624 * true=the widget was scrolled | |
| 6625 * false=the widget was not scrolled, the given offset is not valid. | |
| 6626 */ | |
| 6627 bool scrollHorizontal(int pixels, bool adjustScrollBar) { | |
| 6628 if (pixels is 0) { | |
| 6629 return false; | |
| 6630 } | |
| 6631 ScrollBar horizontalBar = getHorizontalBar(); | |
| 6632 if (horizontalBar !is null && adjustScrollBar) { | |
| 6633 horizontalBar.setSelection(horizontalScrollOffset + pixels); | |
| 6634 } | |
| 6635 int scrollHeight = clientAreaHeight - topMargin - bottomMargin; | |
| 6636 if (pixels > 0) { | |
| 6637 int sourceX = leftMargin + pixels; | |
| 6638 int scrollWidth = clientAreaWidth - sourceX - rightMargin; | |
| 6639 if (scrollWidth > 0) { | |
| 6640 scroll(leftMargin, topMargin, sourceX, topMargin, scrollWidth, scrollHeight, true); | |
| 6641 } | |
| 6642 if (sourceX > scrollWidth) { | |
| 6643 super.redraw(leftMargin + scrollWidth, topMargin, pixels - scrollWidth, scrollHeight, true); | |
| 6644 } | |
| 6645 } else { | |
| 6646 int destinationX = leftMargin - pixels; | |
| 6647 int scrollWidth = clientAreaWidth - destinationX - rightMargin; | |
| 6648 if (scrollWidth > 0) { | |
| 6649 scroll(destinationX, topMargin, leftMargin, topMargin, scrollWidth, scrollHeight, true); | |
| 6650 } | |
| 6651 if (destinationX > scrollWidth) { | |
| 6652 super.redraw(leftMargin + scrollWidth, topMargin, -pixels - scrollWidth, scrollHeight, true); | |
| 6653 } | |
| 6654 } | |
| 6655 horizontalScrollOffset += pixels; | |
| 6656 setCaretLocation(); | |
| 6657 return true; | |
| 6658 } | |
| 6659 /** | |
| 6660 * Scrolls the widget vertically. | |
| 6661 * | |
| 6662 * @param pixel the new vertical scroll offset | |
| 6663 * @param adjustScrollBar | |
| 6664 * true= the scroll thumb will be moved to reflect the new scroll offset. | |
| 6665 * false = the scroll thumb will not be moved | |
| 6666 * @return | |
| 6667 * true=the widget was scrolled | |
| 6668 * false=the widget was not scrolled | |
| 6669 */ | |
| 6670 bool scrollVertical(int pixels, bool adjustScrollBar) { | |
| 6671 if (pixels is 0) { | |
| 6672 return false; | |
| 6673 } | |
| 6674 if (verticalScrollOffset !is -1) { | |
| 6675 ScrollBar verticalBar = getVerticalBar(); | |
| 6676 if (verticalBar !is null && adjustScrollBar) { | |
| 6677 verticalBar.setSelection(verticalScrollOffset + pixels); | |
| 6678 } | |
| 6679 int scrollWidth = clientAreaWidth - leftMargin - rightMargin; | |
| 6680 if (pixels > 0) { | |
| 6681 int sourceY = topMargin + pixels; | |
| 6682 int scrollHeight = clientAreaHeight - sourceY - bottomMargin; | |
| 6683 if (scrollHeight > 0) { | |
| 6684 scroll(leftMargin, topMargin, leftMargin, sourceY, scrollWidth, scrollHeight, true); | |
| 6685 } | |
| 6686 if (sourceY > scrollHeight) { | |
| 6687 int redrawY = Math.max(0, topMargin + scrollHeight); | |
| 6688 int redrawHeight = Math.min(clientAreaHeight, pixels - scrollHeight); | |
| 6689 super.redraw(leftMargin, redrawY, scrollWidth, redrawHeight, true); | |
| 6690 } | |
| 6691 } else { | |
| 6692 int destinationY = topMargin - pixels; | |
| 6693 int scrollHeight = clientAreaHeight - destinationY - bottomMargin; | |
| 6694 if (scrollHeight > 0) { | |
| 6695 scroll(leftMargin, destinationY, leftMargin, topMargin, scrollWidth, scrollHeight, true); | |
| 6696 } | |
| 6697 if (destinationY > scrollHeight) { | |
| 6698 int redrawY = Math.max(0, topMargin + scrollHeight); | |
| 6699 int redrawHeight = Math.min(clientAreaHeight, -pixels - scrollHeight); | |
| 6700 super.redraw(leftMargin, redrawY, scrollWidth, redrawHeight, true); | |
| 6701 } | |
| 6702 } | |
| 6703 verticalScrollOffset += pixels; | |
| 6704 calculateTopIndex(pixels); | |
| 6705 } else { | |
| 6706 calculateTopIndex(pixels); | |
| 6707 super.redraw(); | |
| 6708 } | |
| 6709 setCaretLocation(); | |
| 6710 return true; | |
| 6711 } | |
| 6712 void scrollText(int srcY, int destY) { | |
| 6713 if (srcY is destY) return; | |
| 6714 int deltaY = destY - srcY; | |
| 6715 int scrollWidth = clientAreaWidth - leftMargin - rightMargin, scrollHeight; | |
| 6716 if (deltaY > 0) { | |
| 6717 scrollHeight = clientAreaHeight - srcY - bottomMargin; | |
| 6718 } else { | |
| 6719 scrollHeight = clientAreaHeight - destY - bottomMargin; | |
| 6720 } | |
| 6721 scroll(leftMargin, destY, leftMargin, srcY, scrollWidth, scrollHeight, true); | |
| 6722 if ((0 < srcY + scrollHeight) && (topMargin > srcY)) { | |
| 6723 super.redraw(leftMargin, deltaY, scrollWidth, topMargin, false); | |
| 6724 } | |
| 6725 if ((0 < destY + scrollHeight) && (topMargin > destY)) { | |
| 6726 super.redraw(leftMargin, 0, scrollWidth, topMargin, false); | |
| 6727 } | |
| 6728 if ((clientAreaHeight - bottomMargin < srcY + scrollHeight) && (clientAreaHeight > srcY)) { | |
| 6729 super.redraw(leftMargin, clientAreaHeight - bottomMargin + deltaY, scrollWidth, bottomMargin, false); | |
| 6730 } | |
| 6731 if ((clientAreaHeight - bottomMargin < destY + scrollHeight) && (clientAreaHeight > destY)) { | |
| 6732 super.redraw(leftMargin, clientAreaHeight - bottomMargin, scrollWidth, bottomMargin, false); | |
| 6733 } | |
| 6734 } | |
| 6735 /** | |
| 6736 * Selects all the text. | |
| 6737 * | |
| 6738 * @exception SWTException <ul> | |
| 6739 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6740 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6741 * </ul> | |
| 6742 */ | |
| 6743 public void selectAll() { | |
| 6744 checkWidget(); | |
| 6745 setSelection(0, Math.max(getCharCount(),0)); | |
| 6746 } | |
| 6747 /** | |
| 6748 * Replaces/inserts text as defined by the event. | |
| 6749 * | |
| 6750 * @param event the text change event. | |
| 6751 * <ul> | |
| 6752 * <li>event.start - the replace start offset</li> | |
| 6753 * <li>event.end - the replace end offset</li> | |
| 6754 * <li>event.text - the new text</li> | |
| 6755 * </ul> | |
| 6756 */ | |
| 6757 void sendKeyEvent(Event event) { | |
| 6758 if (editable) { | |
| 6759 modifyContent(event, true); | |
| 6760 } | |
| 6761 } | |
| 6762 /** | |
| 6763 * Returns a StyledTextEvent that can be used to request data such | |
| 6764 * as styles and background color for a line. | |
| 6765 * <p> | |
| 6766 * The specified line may be a visual (wrapped) line if in word | |
| 6767 * wrap mode. The returned object will always be for a logical | |
| 6768 * (unwrapped) line. | |
| 6769 * </p> | |
| 6770 * | |
| 6771 * @param lineOffset offset of the line. This may be the offset of | |
| 6772 * a visual line if the widget is in word wrap mode. | |
| 6773 * @param line line text. This may be the text of a visual line if | |
| 6774 * the widget is in word wrap mode. | |
| 6775 * @return StyledTextEvent that can be used to request line data | |
| 6776 * for the given line. | |
| 6777 */ | |
| 6778 StyledTextEvent sendLineEvent(int eventType, int lineOffset, String line) { | |
| 6779 StyledTextEvent event = null; | |
| 6780 if (isListening(eventType)) { | |
| 6781 event = new StyledTextEvent(content); | |
| 6782 event.detail = lineOffset; | |
| 6783 event.text = line; | |
| 6784 event.alignment = alignment; | |
| 6785 event.indent = indent; | |
| 6786 event.justify = justify; | |
| 6787 notifyListeners(eventType, event); | |
| 6788 } | |
| 6789 return event; | |
| 6790 } | |
| 6791 void sendModifyEvent(Event event) { | |
| 6792 Accessible accessible = getAccessible(); | |
| 6793 if (event.text.length is 0) { | |
| 6794 accessible.textChanged(ACC.TEXT_DELETE, event.start, event.end - event.start); | |
| 6795 } else { | |
| 6796 if (event.start is event.end) { | |
| 6797 accessible.textChanged(ACC.TEXT_INSERT, event.start, event.text.length); | |
| 6798 } else { | |
| 6799 accessible.textChanged(ACC.TEXT_DELETE, event.start, event.end - event.start); | |
| 6800 accessible.textChanged(ACC.TEXT_INSERT, event.start, event.text.length); | |
| 6801 } | |
| 6802 } | |
| 6803 notifyListeners(SWT.Modify, event); | |
| 6804 } | |
| 6805 /** | |
| 6806 * Sends the specified selection event. | |
| 6807 */ | |
| 6808 void sendSelectionEvent() { | |
| 6809 getAccessible().textSelectionChanged(); | |
| 6810 Event event = new Event(); | |
| 6811 event.x = selection.x; | |
| 6812 event.y = selection.y; | |
| 6813 notifyListeners(SWT.Selection, event); | |
| 6814 } | |
| 6815 int sendWordBoundaryEvent(int eventType, int movement, int offset, int newOffset, String lineText, int lineOffset) { | |
| 6816 if (isListening(eventType)) { | |
| 6817 StyledTextEvent event = new StyledTextEvent(content); | |
| 6818 event.detail = lineOffset; | |
| 6819 event.text = lineText; | |
| 6820 event.count = movement; | |
| 6821 event.start = offset; | |
| 6822 event.end = newOffset; | |
| 6823 notifyListeners(eventType, event); | |
| 6824 offset = event.end; | |
| 6825 if (offset !is newOffset) { | |
| 6826 int length = getCharCount(); | |
| 6827 if (offset < 0) { | |
| 6828 offset = 0; | |
| 6829 } else if (offset > length) { | |
| 6830 offset = length; | |
| 6831 } else { | |
| 6832 if (isLineDelimiter(offset)) { | |
| 6833 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 6834 } | |
| 6835 } | |
| 6836 } | |
| 6837 return offset; | |
| 6838 } | |
| 6839 return newOffset; | |
| 6840 } | |
| 6841 /** | |
| 6842 * Sets the alignment of the widget. The argument should be one of <code>SWT.LEFT</code>, | |
| 6843 * <code>SWT.CENTER</code> or <code>SWT.RIGHT</code>. The alignment applies for all lines. | |
| 6844 * </p><p> | |
| 6845 * Note that if <code>SWT.MULTI</code> is set, then <code>SWT.WRAP</code> must also be set | |
| 6846 * in order to stabilize the right edge before setting alignment. | |
| 6847 * </p> | |
| 6848 * | |
| 6849 * @param alignment the new alignment | |
| 6850 * | |
| 6851 * @exception SWTException <ul> | |
| 6852 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6853 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6854 * </ul> | |
| 6855 * | |
| 6856 * @see #setLineAlignment(int, int, int) | |
| 6857 * | |
| 6858 * @since 3.2 | |
| 6859 */ | |
| 6860 public void setAlignment(int alignment) { | |
| 6861 checkWidget(); | |
| 6862 alignment &= (SWT.LEFT | SWT.RIGHT | SWT.CENTER); | |
| 6863 if (alignment is 0 || this.alignment is alignment) return; | |
| 6864 this.alignment = alignment; | |
| 6865 resetCache(0, content.getLineCount()); | |
| 6866 setCaretLocation(); | |
| 6867 super.redraw(); | |
| 6868 } | |
| 6869 /** | |
| 6870 * @see Control#setBackground(Color) | |
| 6871 */ | |
| 6872 public override void setBackground(Color color) { | |
| 6873 checkWidget(); | |
| 6874 background = color; | |
| 6875 super.setBackground(color); | |
| 6876 super.redraw(); | |
| 6877 } | |
| 6878 /** | |
| 6879 * Sets the receiver's caret. Set the caret's height and location. | |
| 6880 * | |
| 6881 * </p> | |
| 6882 * @param caret the new caret for the receiver | |
| 6883 * | |
| 6884 * @exception SWTException <ul> | |
| 6885 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6886 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6887 * </ul> | |
| 6888 */ | |
| 6889 public override void setCaret(Caret caret) { | |
| 6890 checkWidget (); | |
| 6891 super.setCaret(caret); | |
| 6892 caretDirection = SWT.NULL; | |
| 6893 if (caret !is null) { | |
| 6894 setCaretLocation(); | |
| 6895 } | |
| 6896 } | |
| 6897 /** | |
| 6898 * Sets the BIDI coloring mode. When true the BIDI text display | |
| 6899 * algorithm is applied to segments of text that are the same | |
| 6900 * color. | |
| 6901 * | |
| 6902 * @param mode the new coloring mode | |
| 6903 * @exception SWTException <ul> | |
| 6904 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6905 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6906 * </ul> | |
| 6907 * | |
| 6908 * @deprecated use BidiSegmentListener instead. | |
| 6909 */ | |
| 6910 public void setBidiColoring(bool mode) { | |
| 6911 checkWidget(); | |
| 6912 bidiColoring = mode; | |
| 6913 } | |
| 6914 /** | |
| 6915 * Moves the Caret to the current caret offset. | |
| 6916 */ | |
| 6917 void setCaretLocation() { | |
| 6918 Point newCaretPos = getPointAtOffset(caretOffset); | |
| 6919 setCaretLocation(newCaretPos, getCaretDirection()); | |
| 6920 } | |
| 6921 void setCaretLocation(Point location, int direction) { | |
| 6922 Caret caret = getCaret(); | |
| 6923 if (caret !is null) { | |
| 6924 bool isDefaultCaret = caret is defaultCaret; | |
| 6925 int lineHeight = renderer.getLineHeight(); | |
| 6926 int caretHeight = lineHeight; | |
| 6927 if (!isFixedLineHeight() && isDefaultCaret) { | |
| 6928 caretHeight = getBoundsAtOffset(caretOffset).height; | |
| 6929 if (caretHeight !is lineHeight) { | |
| 6930 direction = SWT.DEFAULT; | |
| 6931 } | |
| 6932 } | |
| 6933 int imageDirection = direction; | |
| 6934 if (isMirrored()) { | |
| 6935 if (imageDirection is SWT.LEFT) { | |
| 6936 imageDirection = SWT.RIGHT; | |
| 6937 } else if (imageDirection is SWT.RIGHT) { | |
| 6938 imageDirection = SWT.LEFT; | |
| 6939 } | |
| 6940 } | |
| 6941 if (isDefaultCaret && imageDirection is SWT.RIGHT) { | |
| 6942 location.x -= (caret.getSize().x - 1); | |
| 6943 } | |
| 6944 if (isDefaultCaret) { | |
| 6945 caret.setBounds(location.x, location.y, caretWidth, caretHeight); | |
| 6946 } else { | |
| 6947 caret.setLocation(location); | |
| 6948 } | |
| 6949 getAccessible().textCaretMoved(getCaretOffset()); | |
| 6950 if (direction !is caretDirection) { | |
| 6951 caretDirection = direction; | |
| 6952 if (isDefaultCaret) { | |
| 6953 if (imageDirection is SWT.DEFAULT) { | |
| 6954 defaultCaret.setImage(null); | |
| 6955 } else if (imageDirection is SWT.LEFT) { | |
| 6956 defaultCaret.setImage(leftCaretBitmap); | |
| 6957 } else if (imageDirection is SWT.RIGHT) { | |
| 6958 defaultCaret.setImage(rightCaretBitmap); | |
| 6959 } | |
| 6960 } | |
| 6961 if (caretDirection is SWT.LEFT) { | |
| 6962 BidiUtil.setKeyboardLanguage(BidiUtil.KEYBOARD_NON_BIDI); | |
| 6963 } else if (caretDirection is SWT.RIGHT) { | |
| 6964 BidiUtil.setKeyboardLanguage(BidiUtil.KEYBOARD_BIDI); | |
| 6965 } | |
| 6966 } | |
| 6967 } | |
| 6968 columnX = location.x; | |
| 6969 } | |
| 6970 /** | |
| 6971 * Sets the caret offset. | |
| 6972 * | |
| 6973 * @param offset caret offset, relative to the first character in the text. | |
| 6974 * @exception SWTException <ul> | |
| 6975 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6976 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6977 * </ul> | |
| 6978 * @exception IllegalArgumentException <ul> | |
| 6979 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 6980 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 6981 * </ul> | |
| 6982 */ | |
| 6983 public void setCaretOffset(int offset) { | |
| 6984 checkWidget(); | |
| 6985 int length = getCharCount(); | |
| 6986 if (length > 0 && offset !is caretOffset) { | |
| 6987 if (offset < 0) { | |
| 6988 caretOffset = 0; | |
| 6989 } else if (offset > length) { | |
| 6990 caretOffset = length; | |
| 6991 } else { | |
| 6992 if (isLineDelimiter(offset)) { | |
| 6993 // offset is inside a multi byte line delimiter. This is an | |
| 6994 // illegal operation and an exception is thrown. Fixes 1GDKK3R | |
| 6995 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 6996 } | |
| 6997 caretOffset = offset; | |
| 6998 } | |
| 6999 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 7000 // clear the selection if the caret is moved. | |
| 7001 // don't notify listeners about the selection change. | |
| 7002 clearSelection(false); | |
| 7003 } | |
| 7004 setCaretLocation(); | |
| 7005 } | |
| 7006 /** | |
| 7007 * Copies the specified text range to the clipboard. The text will be placed | |
| 7008 * in the clipboard in plain text format and RTF format. | |
| 7009 * | |
| 7010 * @param start start index of the text | |
| 7011 * @param length length of text to place in clipboard | |
| 7012 * | |
| 7013 * @exception SWTError, see Clipboard.setContents | |
| 7014 * @see org.eclipse.swt.dnd.Clipboard#setContents | |
| 7015 */ | |
| 7016 void setClipboardContent(int start, int length, int clipboardType) { | |
| 7017 if (clipboardType is DND.SELECTION_CLIPBOARD && !(IS_MOTIF || IS_GTK)) return; | |
| 7018 TextTransfer plainTextTransfer = TextTransfer.getInstance(); | |
| 7019 TextWriter plainTextWriter = new TextWriter(start, length); | |
| 7020 String plainText = getPlatformDelimitedText(plainTextWriter); | |
| 7021 Object[] data; | |
| 7022 Transfer[] types; | |
| 7023 if (clipboardType is DND.SELECTION_CLIPBOARD) { | |
| 7024 data = [ cast(Object) new ArrayWrapperString(plainText) ]; | |
| 7025 types = [plainTextTransfer]; | |
| 7026 } else { | |
| 7027 RTFTransfer rtfTransfer = RTFTransfer.getInstance(); | |
| 7028 RTFWriter rtfWriter = new RTFWriter(start, length); | |
| 7029 String rtfText = getPlatformDelimitedText(rtfWriter); | |
| 7030 data = [ cast(Object) new ArrayWrapperString(rtfText), new ArrayWrapperString(plainText) ]; | |
| 7031 types = [ cast(Transfer)rtfTransfer, plainTextTransfer]; | |
| 7032 } | |
| 7033 clipboard.setContents(data, types, clipboardType); | |
| 7034 } | |
| 7035 /** | |
| 7036 * Sets the content implementation to use for text storage. | |
| 7037 * | |
| 7038 * @param newContent StyledTextContent implementation to use for text storage. | |
| 7039 * @exception SWTException <ul> | |
| 7040 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7041 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7042 * </ul> | |
| 7043 * @exception IllegalArgumentException <ul> | |
| 7044 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 7045 * </ul> | |
| 7046 */ | |
| 7047 public void setContent(StyledTextContent newContent) { | |
| 7048 checkWidget(); | |
| 7049 if (newContent is null) { | |
| 7050 SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 7051 } | |
| 7052 if (content !is null) { | |
| 7053 content.removeTextChangeListener(textChangeListener); | |
| 7054 } | |
| 7055 content = newContent; | |
| 7056 content.addTextChangeListener(textChangeListener); | |
| 7057 reset(); | |
| 7058 } | |
| 7059 /** | |
| 7060 * Sets the receiver's cursor to the cursor specified by the | |
| 7061 * argument. Overridden to handle the null case since the | |
| 7062 * StyledText widget uses an ibeam as its default cursor. | |
| 7063 * | |
| 7064 * @see Control#setCursor(Cursor) | |
| 7065 */ | |
| 7066 public override void setCursor (Cursor cursor) { | |
| 7067 if (cursor is null) { | |
| 7068 Display display = getDisplay(); | |
| 7069 super.setCursor(display.getSystemCursor(SWT.CURSOR_IBEAM)); | |
| 7070 } else { | |
| 7071 super.setCursor(cursor); | |
| 7072 } | |
| 7073 } | |
| 7074 /** | |
| 7075 * Sets whether the widget : double click mouse behavior. | |
| 7076 * </p> | |
| 7077 * | |
| 7078 * @param enable if true double clicking a word selects the word, if false | |
| 7079 * double clicks have the same effect as regular mouse clicks. | |
| 7080 * @exception SWTException <ul> | |
| 7081 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7082 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7083 * </ul> | |
| 7084 */ | |
| 7085 public void setDoubleClickEnabled(bool enable) { | |
| 7086 checkWidget(); | |
| 7087 doubleClickEnabled = enable; | |
| 7088 } | |
| 7089 public override void setDragDetect (bool dragDetect_) { | |
| 7090 checkWidget (); | |
| 7091 this.dragDetect_ = dragDetect_; | |
| 7092 } | |
| 7093 /** | |
| 7094 * Sets whether the widget content can be edited. | |
| 7095 * </p> | |
| 7096 * | |
| 7097 * @param editable if true content can be edited, if false content can not be | |
| 7098 * edited | |
| 7099 * @exception SWTException <ul> | |
| 7100 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7101 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7102 * </ul> | |
| 7103 */ | |
| 7104 public void setEditable(bool editable) { | |
| 7105 checkWidget(); | |
| 7106 this.editable = editable; | |
| 7107 } | |
| 7108 /** | |
| 7109 * Sets a new font to render text with. | |
| 7110 * <p> | |
| 7111 * <b>NOTE:</b> Italic fonts are not supported unless they have no overhang | |
| 7112 * and the same baseline as regular fonts. | |
| 7113 * </p> | |
| 7114 * | |
| 7115 * @param font new font | |
| 7116 * @exception SWTException <ul> | |
| 7117 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7118 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7119 * </ul> | |
| 7120 */ | |
| 7121 public override void setFont(Font font) { | |
| 7122 checkWidget(); | |
| 7123 int oldLineHeight = renderer.getLineHeight(); | |
| 7124 super.setFont(font); | |
| 7125 renderer.setFont(getFont(), tabLength); | |
| 7126 // keep the same top line visible. fixes 5815 | |
| 7127 if (isFixedLineHeight()) { | |
| 7128 int lineHeight = renderer.getLineHeight(); | |
| 7129 if (lineHeight !is oldLineHeight) { | |
| 7130 int vscroll = (getVerticalScrollOffset() * lineHeight / oldLineHeight) - getVerticalScrollOffset(); | |
| 7131 scrollVertical(vscroll, true); | |
| 7132 } | |
| 7133 } | |
| 7134 resetCache(0, content.getLineCount()); | |
| 7135 claimBottomFreeSpace(); | |
| 7136 calculateScrollBars(); | |
| 7137 if (isBidiCaret()) createCaretBitmaps(); | |
| 7138 caretDirection = SWT.NULL; | |
| 7139 setCaretLocation(); | |
| 7140 super.redraw(); | |
| 7141 } | |
| 7142 public override void setForeground(Color color) { | |
| 7143 checkWidget(); | |
| 7144 foreground = color; | |
| 7145 super.setForeground(getForeground()); | |
| 7146 super.redraw(); | |
| 7147 } | |
| 7148 /** | |
| 7149 * Sets the horizontal scroll offset relative to the start of the line. | |
| 7150 * Do nothing if there is no text set. | |
| 7151 * <p> | |
| 7152 * <b>NOTE:</b> The horizontal index is reset to 0 when new text is set in the | |
| 7153 * widget. | |
| 7154 * </p> | |
| 7155 * | |
| 7156 * @param offset horizontal scroll offset relative to the start | |
| 7157 * of the line, measured in character increments starting at 0, if | |
| 7158 * equal to 0 the content is not scrolled, if > 0 = the content is scrolled. | |
| 7159 * @exception SWTException <ul> | |
| 7160 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7161 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7162 * </ul> | |
| 7163 */ | |
| 7164 public void setHorizontalIndex(int offset) { | |
| 7165 checkWidget(); | |
| 7166 if (getCharCount() is 0) { | |
| 7167 return; | |
| 7168 } | |
| 7169 if (offset < 0) { | |
| 7170 offset = 0; | |
| 7171 } | |
| 7172 offset *= getHorizontalIncrement(); | |
| 7173 // allow any value if client area width is unknown or 0. | |
| 7174 // offset will be checked in resize handler. | |
| 7175 // don't use isVisible since width is known even if widget | |
| 7176 // is temporarily invisible | |
| 7177 if (clientAreaWidth > 0) { | |
| 7178 int width = renderer.getWidth(); | |
| 7179 // prevent scrolling if the content fits in the client area. | |
| 7180 // align end of longest line with right border of client area | |
| 7181 // if offset is out of range. | |
| 7182 if (offset > width - clientAreaWidth) { | |
| 7183 offset = Math.max(0, width - clientAreaWidth); | |
| 7184 } | |
| 7185 } | |
| 7186 scrollHorizontal(offset - horizontalScrollOffset, true); | |
| 7187 } | |
| 7188 /** | |
| 7189 * Sets the horizontal pixel offset relative to the start of the line. | |
| 7190 * Do nothing if there is no text set. | |
| 7191 * <p> | |
| 7192 * <b>NOTE:</b> The horizontal pixel offset is reset to 0 when new text | |
| 7193 * is set in the widget. | |
| 7194 * </p> | |
| 7195 * | |
| 7196 * @param pixel horizontal pixel offset relative to the start | |
| 7197 * of the line. | |
| 7198 * @exception SWTException <ul> | |
| 7199 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7200 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7201 * </ul> | |
| 7202 * @since 2.0 | |
| 7203 */ | |
| 7204 public void setHorizontalPixel(int pixel) { | |
| 7205 checkWidget(); | |
| 7206 if (getCharCount() is 0) { | |
| 7207 return; | |
| 7208 } | |
| 7209 if (pixel < 0) { | |
| 7210 pixel = 0; | |
| 7211 } | |
| 7212 // allow any value if client area width is unknown or 0. | |
| 7213 // offset will be checked in resize handler. | |
| 7214 // don't use isVisible since width is known even if widget | |
| 7215 // is temporarily invisible | |
| 7216 if (clientAreaWidth > 0) { | |
| 7217 int width = renderer.getWidth(); | |
| 7218 // prevent scrolling if the content fits in the client area. | |
| 7219 // align end of longest line with right border of client area | |
| 7220 // if offset is out of range. | |
| 7221 if (pixel > width - clientAreaWidth) { | |
| 7222 pixel = Math.max(0, width - clientAreaWidth); | |
| 7223 } | |
| 7224 } | |
| 7225 scrollHorizontal(pixel - horizontalScrollOffset, true); | |
| 7226 } | |
| 7227 /** | |
| 7228 * Sets the line indentation of the widget. | |
| 7229 * <p> | |
| 7230 * It is the amount of blank space, in pixels, at the beginning of each line. | |
| 7231 * When a line wraps in several lines only the first one is indented. | |
| 7232 * </p> | |
| 7233 * | |
| 7234 * @param indent the new indent | |
| 7235 * | |
| 7236 * @exception SWTException <ul> | |
| 7237 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7238 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7239 * </ul> | |
| 7240 * | |
| 7241 * @see #setLineIndent(int, int, int) | |
| 7242 * | |
| 7243 * @since 3.2 | |
| 7244 */ | |
| 7245 public void setIndent(int indent) { | |
| 7246 checkWidget(); | |
| 7247 if (this.indent is indent || indent < 0) return; | |
| 7248 this.indent = indent; | |
| 7249 resetCache(0, content.getLineCount()); | |
| 7250 setCaretLocation(); | |
| 7251 super.redraw(); | |
| 7252 } | |
| 7253 /** | |
| 7254 * Sets whether the widget should justify lines. | |
| 7255 * | |
| 7256 * @param justify whether lines should be justified | |
| 7257 * | |
| 7258 * @exception SWTException <ul> | |
| 7259 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7260 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7261 * </ul> | |
| 7262 * | |
| 7263 * @see #setLineJustify(int, int, bool) | |
| 7264 * | |
| 7265 * @since 3.2 | |
| 7266 */ | |
| 7267 public void setJustify(bool justify) { | |
| 7268 checkWidget(); | |
| 7269 if (this.justify is justify) return; | |
| 7270 this.justify = justify; | |
| 7271 resetCache(0, content.getLineCount()); | |
| 7272 setCaretLocation(); | |
| 7273 super.redraw(); | |
| 7274 } | |
| 7275 /** | |
| 7276 * Maps a key to an action. | |
| 7277 * <p> | |
| 7278 * One action can be associated with N keys. However, each key can only | |
| 7279 * have one action (key:action is N:1 relation). | |
| 7280 * </p> | |
| 7281 * | |
| 7282 * @param key a key code defined in SWT.java or a character. | |
| 7283 * Optionally ORd with a state mask. Preferred state masks are one or more of | |
| 7284 * SWT.MOD1, SWT.MOD2, SWT.MOD3, since these masks account for modifier platform | |
| 7285 * differences. However, there may be cases where using the specific state masks | |
| 7286 * (i.e., SWT.CTRL, SWT.SHIFT, SWT.ALT, SWT.COMMAND) makes sense. | |
| 7287 * @param action one of the predefined actions defined in ST.java. | |
| 7288 * Use SWT.NULL to remove a key binding. | |
| 7289 * @exception SWTException <ul> | |
| 7290 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7291 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7292 * </ul> | |
| 7293 */ | |
| 7294 public void setKeyBinding(int key, int action) { | |
| 7295 checkWidget(); | |
| 7296 int modifierValue = key & SWT.MODIFIER_MASK; | |
| 7297 char keyChar = cast(char)(key & SWT.KEY_MASK); | |
| 7298 if (Compatibility.isLetter(keyChar)) { | |
| 7299 // make the keybinding case insensitive by adding it | |
| 7300 // in its upper and lower case form | |
| 7301 char ch = CharacterToUpper(keyChar); | |
| 7302 int newKey = ch | modifierValue; | |
| 7303 if (action is SWT.NULL) { | |
| 7304 keyActionMap.remove(newKey); | |
| 7305 } else { | |
| 7306 keyActionMap[newKey] = action; | |
| 7307 } | |
| 7308 ch = CharacterToLower(keyChar); | |
| 7309 newKey = ch | modifierValue; | |
| 7310 if (action is SWT.NULL) { | |
| 7311 keyActionMap.remove(newKey); | |
| 7312 } else { | |
| 7313 keyActionMap[newKey] = action; | |
| 7314 } | |
| 7315 } else { | |
| 7316 if (action is SWT.NULL) { | |
| 7317 keyActionMap.remove(key); | |
| 7318 } else { | |
| 7319 keyActionMap[key]=action; | |
| 7320 } | |
| 7321 } | |
| 7322 } | |
| 7323 /** | |
| 7324 * Sets the alignment of the specified lines. The argument should be one of <code>SWT.LEFT</code>, | |
| 7325 * <code>SWT.CENTER</code> or <code>SWT.RIGHT</code>. | |
| 7326 * <p><p> | |
| 7327 * Note that if <code>SWT.MULTI</code> is set, then <code>SWT.WRAP</code> must also be set | |
| 7328 * in order to stabilize the right edge before setting alignment. | |
| 7329 * </p> | |
| 7330 * Should not be called if a LineStyleListener has been set since the listener | |
| 7331 * maintains the line attributes. | |
| 7332 * </p><p> | |
| 7333 * All line attributes are maintained relative to the line text, not the | |
| 7334 * line index that is specified in this method call. | |
| 7335 * During text changes, when entire lines are inserted or removed, the line | |
| 7336 * attributes that are associated with the lines after the change | |
| 7337 * will "move" with their respective text. An entire line is defined as | |
| 7338 * extending from the first character on a line to the last and including the | |
| 7339 * line delimiter. | |
| 7340 * </p><p> | |
| 7341 * When two lines are joined by deleting a line delimiter, the top line | |
| 7342 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7343 * For all other text changes line attributes will remain unchanged. | |
| 7344 * | |
| 7345 * @param startLine first line the alignment is applied to, 0 based | |
| 7346 * @param lineCount number of lines the alignment applies to. | |
| 7347 * @param alignment line alignment | |
| 7348 * | |
| 7349 * @exception SWTException <ul> | |
| 7350 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7351 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7352 * </ul> | |
| 7353 * @exception IllegalArgumentException <ul> | |
| 7354 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7355 * </ul> | |
| 7356 * @see #setAlignment(int) | |
| 7357 * @since 3.2 | |
| 7358 */ | |
| 7359 public void setLineAlignment(int startLine, int lineCount, int alignment) { | |
| 7360 checkWidget(); | |
| 7361 if (isListening(LineGetStyle)) return; | |
| 7362 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7363 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 7364 } | |
| 7365 | |
| 7366 renderer.setLineAlignment(startLine, lineCount, alignment); | |
| 7367 resetCache(startLine, lineCount); | |
| 7368 redrawLines(startLine, lineCount); | |
| 7369 int caretLine = getCaretLine(); | |
| 7370 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7371 setCaretLocation(); | |
| 7372 } | |
| 7373 } | |
| 7374 /** | |
| 7375 * Sets the background color of the specified lines. | |
| 7376 * <p> | |
| 7377 * The background color is drawn for the width of the widget. All | |
| 7378 * line background colors are discarded when setText is called. | |
| 7379 * The text background color if defined in a StyleRange overlays the | |
| 7380 * line background color. | |
| 7381 * </p><p> | |
| 7382 * Should not be called if a LineBackgroundListener has been set since the | |
| 7383 * listener maintains the line backgrounds. | |
| 7384 * </p><p> | |
| 7385 * All line attributes are maintained relative to the line text, not the | |
| 7386 * line index that is specified in this method call. | |
| 7387 * During text changes, when entire lines are inserted or removed, the line | |
| 7388 * attributes that are associated with the lines after the change | |
| 7389 * will "move" with their respective text. An entire line is defined as | |
| 7390 * extending from the first character on a line to the last and including the | |
| 7391 * line delimiter. | |
| 7392 * </p><p> | |
| 7393 * When two lines are joined by deleting a line delimiter, the top line | |
| 7394 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7395 * For all other text changes line attributes will remain unchanged. | |
| 7396 * </p> | |
| 7397 * | |
| 7398 * @param startLine first line the color is applied to, 0 based | |
| 7399 * @param lineCount number of lines the color applies to. | |
| 7400 * @param background line background color | |
| 7401 * @exception SWTException <ul> | |
| 7402 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7403 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7404 * </ul> | |
| 7405 * @exception IllegalArgumentException <ul> | |
| 7406 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7407 * </ul> | |
| 7408 */ | |
| 7409 public void setLineBackground(int startLine, int lineCount, Color background) { | |
| 7410 checkWidget(); | |
| 7411 if (isListening(LineGetBackground)) return; | |
| 7412 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7413 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 7414 } | |
| 7415 if (background !is null) { | |
| 7416 renderer.setLineBackground(startLine, lineCount, background); | |
| 7417 } else { | |
| 7418 renderer.clearLineBackground(startLine, lineCount); | |
| 7419 } | |
| 7420 redrawLines(startLine, lineCount); | |
| 7421 } | |
| 7422 /** | |
| 7423 * Sets the bullet of the specified lines. | |
| 7424 * <p> | |
| 7425 * Should not be called if a LineStyleListener has been set since the listener | |
| 7426 * maintains the line attributes. | |
| 7427 * </p><p> | |
| 7428 * All line attributes are maintained relative to the line text, not the | |
| 7429 * line index that is specified in this method call. | |
| 7430 * During text changes, when entire lines are inserted or removed, the line | |
| 7431 * attributes that are associated with the lines after the change | |
| 7432 * will "move" with their respective text. An entire line is defined as | |
| 7433 * extending from the first character on a line to the last and including the | |
| 7434 * line delimiter. | |
| 7435 * </p><p> | |
| 7436 * When two lines are joined by deleting a line delimiter, the top line | |
| 7437 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7438 * For all other text changes line attributes will remain unchanged. | |
| 7439 * </p> | |
| 7440 * | |
| 7441 * @param startLine first line the bullet is applied to, 0 based | |
| 7442 * @param lineCount number of lines the bullet applies to. | |
| 7443 * @param bullet line bullet | |
| 7444 * | |
| 7445 * @exception SWTException <ul> | |
| 7446 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7447 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7448 * </ul> | |
| 7449 * @exception IllegalArgumentException <ul> | |
| 7450 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7451 * </ul> | |
| 7452 * @since 3.2 | |
| 7453 */ | |
| 7454 public void setLineBullet(int startLine, int lineCount, Bullet bullet) { | |
| 7455 checkWidget(); | |
| 7456 if (isListening(LineGetStyle)) return; | |
| 7457 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7458 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 7459 } | |
| 7460 | |
| 7461 renderer.setLineBullet(startLine, lineCount, bullet); | |
| 7462 resetCache(startLine, lineCount); | |
| 7463 redrawLines(startLine, lineCount); | |
| 7464 int caretLine = getCaretLine(); | |
| 7465 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7466 setCaretLocation(); | |
| 7467 } | |
| 7468 } | |
| 7469 void setVariableLineHeight () { | |
| 7470 if (!fixedLineHeight) return; | |
| 7471 fixedLineHeight = false; | |
| 7472 renderer.calculateIdle(); | |
| 7473 } | |
| 7474 /** | |
| 7475 * Sets the indent of the specified lines. | |
| 7476 * <p> | |
| 7477 * Should not be called if a LineStyleListener has been set since the listener | |
| 7478 * maintains the line attributes. | |
| 7479 * </p><p> | |
| 7480 * All line attributes are maintained relative to the line text, not the | |
| 7481 * line index that is specified in this method call. | |
| 7482 * During text changes, when entire lines are inserted or removed, the line | |
| 7483 * attributes that are associated with the lines after the change | |
| 7484 * will "move" with their respective text. An entire line is defined as | |
| 7485 * extending from the first character on a line to the last and including the | |
| 7486 * line delimiter. | |
| 7487 * </p><p> | |
| 7488 * When two lines are joined by deleting a line delimiter, the top line | |
| 7489 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7490 * For all other text changes line attributes will remain unchanged. | |
| 7491 * </p> | |
| 7492 * | |
| 7493 * @param startLine first line the indent is applied to, 0 based | |
| 7494 * @param lineCount number of lines the indent applies to. | |
| 7495 * @param indent line indent | |
| 7496 * | |
| 7497 * @exception SWTException <ul> | |
| 7498 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7499 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7500 * </ul> | |
| 7501 * @exception IllegalArgumentException <ul> | |
| 7502 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7503 * </ul> | |
| 7504 * @see #setIndent(int) | |
| 7505 * @since 3.2 | |
| 7506 */ | |
| 7507 public void setLineIndent(int startLine, int lineCount, int indent) { | |
| 7508 checkWidget(); | |
| 7509 if (isListening(LineGetStyle)) return; | |
| 7510 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7511 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 7512 } | |
| 7513 | |
| 7514 renderer.setLineIndent(startLine, lineCount, indent); | |
| 7515 resetCache(startLine, lineCount); | |
| 7516 redrawLines(startLine, lineCount); | |
| 7517 int caretLine = getCaretLine(); | |
| 7518 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7519 setCaretLocation(); | |
| 7520 } | |
| 7521 } | |
| 7522 /** | |
| 7523 * Sets the justify of the specified lines. | |
| 7524 * <p> | |
| 7525 * Should not be called if a LineStyleListener has been set since the listener | |
| 7526 * maintains the line attributes. | |
| 7527 * </p><p> | |
| 7528 * All line attributes are maintained relative to the line text, not the | |
| 7529 * line index that is specified in this method call. | |
| 7530 * During text changes, when entire lines are inserted or removed, the line | |
| 7531 * attributes that are associated with the lines after the change | |
| 7532 * will "move" with their respective text. An entire line is defined as | |
| 7533 * extending from the first character on a line to the last and including the | |
| 7534 * line delimiter. | |
| 7535 * </p><p> | |
| 7536 * When two lines are joined by deleting a line delimiter, the top line | |
| 7537 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7538 * For all other text changes line attributes will remain unchanged. | |
| 7539 * </p> | |
| 7540 * | |
| 7541 * @param startLine first line the justify is applied to, 0 based | |
| 7542 * @param lineCount number of lines the justify applies to. | |
| 7543 * @param justify true if lines should be justified | |
| 7544 * | |
| 7545 * @exception SWTException <ul> | |
| 7546 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7547 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7548 * </ul> | |
| 7549 * @exception IllegalArgumentException <ul> | |
| 7550 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7551 * </ul> | |
| 7552 * @see #setJustify(bool) | |
| 7553 * @since 3.2 | |
| 7554 */ | |
| 7555 public void setLineJustify(int startLine, int lineCount, bool justify) { | |
| 7556 checkWidget(); | |
| 7557 if (isListening(LineGetStyle)) return; | |
| 7558 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7559 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 7560 } | |
| 7561 | |
| 7562 renderer.setLineJustify(startLine, lineCount, justify); | |
| 7563 resetCache(startLine, lineCount); | |
| 7564 redrawLines(startLine, lineCount); | |
| 7565 int caretLine = getCaretLine(); | |
| 7566 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7567 setCaretLocation(); | |
| 7568 } | |
| 7569 } | |
| 7570 /** | |
| 7571 * Sets the line spacing of the widget. The line spacing applies for all lines. | |
| 7572 * | |
| 7573 * @param lineSpacing the line spacing | |
| 7574 * @exception SWTException <ul> | |
| 7575 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7576 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7577 * </ul> | |
| 7578 * @since 3.2 | |
| 7579 */ | |
| 7580 public void setLineSpacing(int lineSpacing) { | |
| 7581 checkWidget(); | |
| 7582 if (this.lineSpacing is lineSpacing || lineSpacing < 0) return; | |
| 7583 this.lineSpacing = lineSpacing; | |
| 7584 setVariableLineHeight(); | |
| 7585 resetCache(0, content.getLineCount()); | |
| 7586 setCaretLocation(); | |
| 7587 super.redraw(); | |
| 7588 } | |
| 7589 void setMargins (int leftMargin, int topMargin, int rightMargin, int bottomMargin) { | |
| 7590 checkWidget(); | |
| 7591 this.leftMargin = leftMargin; | |
| 7592 this.topMargin = topMargin; | |
| 7593 this.rightMargin = rightMargin; | |
| 7594 this.bottomMargin = bottomMargin; | |
| 7595 setCaretLocation(); | |
| 7596 } | |
| 7597 /** | |
| 7598 * Flips selection anchor based on word selection direction. | |
| 7599 */ | |
| 7600 void setMouseWordSelectionAnchor() { | |
| 7601 if (clickCount > 1) { | |
| 7602 if (caretOffset < doubleClickSelection.x) { | |
| 7603 selectionAnchor = doubleClickSelection.y; | |
| 7604 } else if (caretOffset > doubleClickSelection.y) { | |
| 7605 selectionAnchor = doubleClickSelection.x; | |
| 7606 } | |
| 7607 } | |
| 7608 } | |
| 7609 /** | |
| 7610 * Sets the orientation of the receiver, which must be one | |
| 7611 * of the constants <code>SWT.LEFT_TO_RIGHT</code> or <code>SWT.RIGHT_TO_LEFT</code>. | |
| 7612 * | |
| 7613 * @param orientation new orientation style | |
| 7614 * | |
| 7615 * @exception SWTException <ul> | |
| 7616 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7617 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7618 * </ul> | |
| 7619 * | |
| 7620 * @since 2.1.2 | |
| 7621 */ | |
| 7622 public void setOrientation(int orientation) { | |
| 7623 if ((orientation & (SWT.RIGHT_TO_LEFT | SWT.LEFT_TO_RIGHT)) is 0) { | |
| 7624 return; | |
| 7625 } | |
| 7626 if ((orientation & SWT.RIGHT_TO_LEFT) !is 0 && (orientation & SWT.LEFT_TO_RIGHT) !is 0) { | |
| 7627 return; | |
| 7628 } | |
| 7629 if ((orientation & SWT.RIGHT_TO_LEFT) !is 0 && isMirrored()) { | |
| 7630 return; | |
| 7631 } | |
| 7632 if ((orientation & SWT.LEFT_TO_RIGHT) !is 0 && !isMirrored()) { | |
| 7633 return; | |
| 7634 } | |
| 7635 if (!BidiUtil.setOrientation(this, orientation)) { | |
| 7636 return; | |
| 7637 } | |
| 7638 isMirrored_ = (orientation & SWT.RIGHT_TO_LEFT) !is 0; | |
| 7639 caretDirection = SWT.NULL; | |
| 7640 resetCache(0, content.getLineCount()); | |
| 7641 setCaretLocation(); | |
| 7642 keyActionMap = null; | |
| 7643 createKeyBindings(); | |
| 7644 super.redraw(); | |
| 7645 } | |
| 7646 /** | |
| 7647 * Adjusts the maximum and the page size of the scroll bars to | |
| 7648 * reflect content width/length changes. | |
| 7649 * | |
| 7650 * @param vertical indicates if the vertical scrollbar also needs to be set | |
| 7651 */ | |
| 7652 void setScrollBars(bool vertical) { | |
| 7653 int inactive = 1; | |
| 7654 if (vertical || !isFixedLineHeight()) { | |
| 7655 ScrollBar verticalBar = getVerticalBar(); | |
| 7656 if (verticalBar !is null) { | |
| 7657 int maximum = renderer.getHeight(); | |
| 7658 // only set the real values if the scroll bar can be used | |
| 7659 // (ie. because the thumb size is less than the scroll maximum) | |
| 7660 // avoids flashing on Motif, fixes 1G7RE1J and 1G5SE92 | |
| 7661 if (clientAreaHeight < maximum) { | |
| 7662 verticalBar.setMaximum(maximum); | |
| 7663 verticalBar.setThumb(clientAreaHeight); | |
| 7664 verticalBar.setPageIncrement(clientAreaHeight); | |
| 7665 } else if (verticalBar.getThumb() !is inactive || verticalBar.getMaximum() !is inactive) { | |
| 7666 verticalBar.setValues( | |
| 7667 verticalBar.getSelection(), | |
| 7668 verticalBar.getMinimum(), | |
| 7669 inactive, | |
| 7670 inactive, | |
| 7671 verticalBar.getIncrement(), | |
| 7672 inactive); | |
| 7673 } | |
| 7674 } | |
| 7675 } | |
| 7676 ScrollBar horizontalBar = getHorizontalBar(); | |
| 7677 if (horizontalBar !is null && horizontalBar.getVisible()) { | |
| 7678 int maximum = renderer.getWidth(); | |
| 7679 // only set the real values if the scroll bar can be used | |
| 7680 // (ie. because the thumb size is less than the scroll maximum) | |
| 7681 // avoids flashing on Motif, fixes 1G7RE1J and 1G5SE92 | |
| 7682 if (clientAreaWidth < maximum) { | |
| 7683 horizontalBar.setMaximum(maximum); | |
| 7684 horizontalBar.setThumb(clientAreaWidth - leftMargin - rightMargin); | |
| 7685 horizontalBar.setPageIncrement(clientAreaWidth - leftMargin - rightMargin); | |
| 7686 } else if (horizontalBar.getThumb() !is inactive || horizontalBar.getMaximum() !is inactive) { | |
| 7687 horizontalBar.setValues( | |
| 7688 horizontalBar.getSelection(), | |
| 7689 horizontalBar.getMinimum(), | |
| 7690 inactive, | |
| 7691 inactive, | |
| 7692 horizontalBar.getIncrement(), | |
| 7693 inactive); | |
| 7694 } | |
| 7695 } | |
| 7696 } | |
| 7697 /** | |
| 7698 * Sets the selection to the given position and scrolls it into view. Equivalent to setSelection(start,start). | |
| 7699 * | |
| 7700 * @param start new caret position | |
| 7701 * @see #setSelection(int,int) | |
| 7702 * @exception SWTException <ul> | |
| 7703 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7704 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7705 * </ul> | |
| 7706 * @exception IllegalArgumentException <ul> | |
| 7707 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7708 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7709 * </ul> | |
| 7710 */ | |
| 7711 public void setSelection(int start) { | |
| 7712 // checkWidget test done in setSelectionRange | |
| 7713 setSelection(start, start); | |
| 7714 } | |
| 7715 /** | |
| 7716 * Sets the selection and scrolls it into view. | |
| 7717 * <p> | |
| 7718 * Indexing is zero based. Text selections are specified in terms of | |
| 7719 * caret positions. In a text widget that contains N characters, there are | |
| 7720 * N+1 caret positions, ranging from 0..N | |
| 7721 * </p> | |
| 7722 * | |
| 7723 * @param point x=selection start offset, y=selection end offset | |
| 7724 * The caret will be placed at the selection start when x > y. | |
| 7725 * @see #setSelection(int,int) | |
| 7726 * @exception SWTException <ul> | |
| 7727 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7728 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7729 * </ul> | |
| 7730 * @exception IllegalArgumentException <ul> | |
| 7731 * <li>ERROR_NULL_ARGUMENT when point is null</li> | |
| 7732 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7733 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7734 * </ul> | |
| 7735 */ | |
| 7736 public void setSelection(Point point) { | |
| 7737 checkWidget(); | |
| 7738 if (point is null) SWT.error (SWT.ERROR_NULL_ARGUMENT); | |
| 7739 setSelection(point.x, point.y); | |
| 7740 } | |
| 7741 /** | |
| 7742 * Sets the receiver's selection background color to the color specified | |
| 7743 * by the argument, or to the default system color for the control | |
| 7744 * if the argument is null. | |
| 7745 * | |
| 7746 * @param color the new color (or null) | |
| 7747 * | |
| 7748 * @exception IllegalArgumentException <ul> | |
| 7749 * <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li> | |
| 7750 * </ul> | |
| 7751 * @exception SWTException <ul> | |
| 7752 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7753 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7754 * </ul> | |
| 7755 * @since 2.1 | |
| 7756 */ | |
| 7757 public void setSelectionBackground (Color color) { | |
| 7758 checkWidget (); | |
| 7759 if (color !is null) { | |
| 7760 if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 7761 } | |
| 7762 selectionBackground = color; | |
| 7763 super.redraw(); | |
| 7764 } | |
| 7765 /** | |
| 7766 * Sets the receiver's selection foreground color to the color specified | |
| 7767 * by the argument, or to the default system color for the control | |
| 7768 * if the argument is null. | |
| 7769 * <p> | |
| 7770 * Note that this is a <em>HINT</em>. Some platforms do not allow the application | |
| 7771 * to change the selection foreground color. | |
| 7772 * </p> | |
| 7773 * @param color the new color (or null) | |
| 7774 * | |
| 7775 * @exception IllegalArgumentException <ul> | |
| 7776 * <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li> | |
| 7777 * </ul> | |
| 7778 * @exception SWTException <ul> | |
| 7779 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7780 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7781 * </ul> | |
| 7782 * @since 2.1 | |
| 7783 */ | |
| 7784 public void setSelectionForeground (Color color) { | |
| 7785 checkWidget (); | |
| 7786 if (color !is null) { | |
| 7787 if (color.isDisposed()) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 7788 } | |
| 7789 selectionForeground = color; | |
| 7790 super.redraw(); | |
| 7791 } | |
| 7792 /** | |
| 7793 * Sets the selection and scrolls it into view. | |
| 7794 * <p> | |
| 7795 * Indexing is zero based. Text selections are specified in terms of | |
| 7796 * caret positions. In a text widget that contains N characters, there are | |
| 7797 * N+1 caret positions, ranging from 0..N | |
| 7798 * </p> | |
| 7799 * | |
| 7800 * @param start selection start offset. The caret will be placed at the | |
| 7801 * selection start when start > end. | |
| 7802 * @param end selection end offset | |
| 7803 * @see #setSelectionRange(int,int) | |
| 7804 * @exception SWTException <ul> | |
| 7805 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7806 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7807 * </ul> | |
| 7808 * @exception IllegalArgumentException <ul> | |
| 7809 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7810 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7811 * </ul> | |
| 7812 */ | |
| 7813 public void setSelection(int start, int end) { | |
| 7814 setSelectionRange(start, end - start); | |
| 7815 showSelection(); | |
| 7816 } | |
| 7817 /** | |
| 7818 * Sets the selection. | |
| 7819 * <p> | |
| 7820 * The new selection may not be visible. Call showSelection to scroll | |
| 7821 * the selection into view. | |
| 7822 * </p> | |
| 7823 * | |
| 7824 * @param start offset of the first selected character, start >= 0 must be true. | |
| 7825 * @param length number of characters to select, 0 <= start + length | |
| 7826 * <= getCharCount() must be true. | |
| 7827 * A negative length places the caret at the selection start. | |
| 7828 * @param sendEvent a Selection event is sent when set to true and when | |
| 7829 * the selection is reset. | |
| 7830 */ | |
| 7831 void setSelection(int start, int length, bool sendEvent) { | |
| 7832 int end = start + length; | |
| 7833 start = content.utf8AdjustOffset(start); | |
| 7834 end = content.utf8AdjustOffset(end); | |
| 7835 if (start > end) { | |
| 7836 int temp = end; | |
| 7837 end = start; | |
| 7838 start = temp; | |
| 7839 } | |
| 7840 // is the selection range different or is the selection direction | |
| 7841 // different? | |
| 7842 if (selection.x !is start || selection.y !is end || | |
| 7843 (length > 0 && selectionAnchor !is selection.x) || | |
| 7844 (length < 0 && selectionAnchor !is selection.y)) { | |
| 7845 clearSelection(sendEvent); | |
| 7846 if (length < 0) { | |
| 7847 selectionAnchor = selection.y = end; | |
| 7848 caretOffset = selection.x = start; | |
| 7849 } else { | |
| 7850 selectionAnchor = selection.x = start; | |
| 7851 caretOffset = selection.y = end; | |
| 7852 } | |
| 7853 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 7854 internalRedrawRange(selection.x, selection.y - selection.x); | |
| 7855 } | |
| 7856 } | |
| 7857 /** | |
| 7858 * Sets the selection. | |
| 7859 * <p> | |
| 7860 * The new selection may not be visible. Call showSelection to scroll the selection | |
| 7861 * into view. A negative length places the caret at the visual start of the selection. | |
| 7862 * </p> | |
| 7863 * | |
| 7864 * @param start offset of the first selected character | |
| 7865 * @param length number of characters to select | |
| 7866 * | |
| 7867 * @exception SWTException <ul> | |
| 7868 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7869 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7870 * </ul> | |
| 7871 * @exception IllegalArgumentException <ul> | |
| 7872 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7873 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7874 * </ul> | |
| 7875 */ | |
| 7876 public void setSelectionRange(int start, int length) { | |
| 7877 checkWidget(); | |
| 7878 int contentLength = getCharCount(); | |
| 7879 start = Math.max(0, Math.min (start, contentLength)); | |
| 7880 int end = start + length; | |
| 7881 if (end < 0) { | |
| 7882 length = -start; | |
| 7883 } else { | |
| 7884 if (end > contentLength) length = contentLength - start; | |
| 7885 } | |
| 7886 if (isLineDelimiter(start) || isLineDelimiter(start + length)) { | |
| 7887 // the start offset or end offset of the selection range is inside a | |
| 7888 // multi byte line delimiter. This is an illegal operation and an exception | |
| 7889 // is thrown. Fixes 1GDKK3R | |
| 7890 SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 7891 } | |
| 7892 setSelection(start, length, false); | |
| 7893 setCaretLocation(); | |
| 7894 } | |
| 7895 /** | |
| 7896 * Adds the specified style. | |
| 7897 * <p> | |
| 7898 * The new style overwrites existing styles for the specified range. | |
| 7899 * Existing style ranges are adjusted if they partially overlap with | |
| 7900 * the new style. To clear an individual style, call setStyleRange | |
| 7901 * with a StyleRange that has null attributes. | |
| 7902 * </p><p> | |
| 7903 * Should not be called if a LineStyleListener has been set since the | |
| 7904 * listener maintains the styles. | |
| 7905 * </p> | |
| 7906 * | |
| 7907 * @param range StyleRange object containing the style information. | |
| 7908 * Overwrites the old style in the given range. May be null to delete | |
| 7909 * all styles. | |
| 7910 * @exception SWTException <ul> | |
| 7911 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7912 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7913 * </ul> | |
| 7914 * @exception IllegalArgumentException <ul> | |
| 7915 * <li>ERROR_INVALID_RANGE when the style range is outside the valid range (> getCharCount())</li> | |
| 7916 * </ul> | |
| 7917 */ | |
| 7918 public void setStyleRange(StyleRange range) { | |
| 7919 checkWidget(); | |
| 7920 if (isListening(LineGetStyle)) return; | |
| 7921 if (range !is null) { | |
| 7922 if (range.isUnstyled()) { | |
| 7923 setStyleRanges(range.start, range.length, null, null, false); | |
| 7924 } else { | |
| 7925 setStyleRanges(range.start, 0, null, [range], false); | |
| 7926 } | |
| 7927 } else { | |
| 7928 setStyleRanges(0, 0, null, null, true); | |
| 7929 } | |
| 7930 } | |
| 7931 /** | |
| 7932 * Clears the styles in the range specified by <code>start</code> and | |
| 7933 * <code>length</code> and adds the new styles. | |
| 7934 * <p> | |
| 7935 * The ranges array contains start and length pairs. Each pair refers to | |
| 7936 * the corresponding style in the styles array. For example, the pair | |
| 7937 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 7938 * at styles[n/2]. The range fields within each StyleRange are ignored. | |
| 7939 * If ranges or styles is null, the specified range is cleared. | |
| 7940 * </p><p> | |
| 7941 * Note: It is expected that the same instance of a StyleRange will occur | |
| 7942 * multiple times within the styles array, reducing memory usage. | |
| 7943 * </p><p> | |
| 7944 * Should not be called if a LineStyleListener has been set since the | |
| 7945 * listener maintains the styles. | |
| 7946 * </p> | |
| 7947 * | |
| 7948 * @param start offset of first character where styles will be deleted | |
| 7949 * @param length length of the range to delete styles in | |
| 7950 * @param ranges the array of ranges. The ranges must not overlap and must be in order. | |
| 7951 * @param styles the array of StyleRanges. The range fields within the StyleRange are unused. | |
| 7952 * | |
| 7953 * @exception SWTException <ul> | |
| 7954 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7955 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7956 * </ul> | |
| 7957 * @exception IllegalArgumentException <ul> | |
| 7958 * <li>ERROR_NULL_ARGUMENT when an element in the styles array is null</li> | |
| 7959 * <li>ERROR_INVALID_RANGE when the number of ranges and style do not match (ranges.length * 2 is styles.length)</li> | |
| 7960 * <li>ERROR_INVALID_RANGE when a range is outside the valid range (> getCharCount() or less than zero)</li> | |
| 7961 * <li>ERROR_INVALID_RANGE when a range overlaps</li> | |
| 7962 * </ul> | |
| 7963 * | |
| 7964 * @since 3.2 | |
| 7965 */ | |
| 7966 public void setStyleRanges(int start, int length, int[] ranges, StyleRange[] styles) { | |
| 7967 checkWidget(); | |
| 7968 if (isListening(LineGetStyle)) return; | |
| 7969 if (ranges is null || styles is null) { | |
| 7970 setStyleRanges(start, length, null, null, false); | |
| 7971 } else { | |
| 7972 setStyleRanges(start, length, ranges, styles, false); | |
| 7973 } | |
| 7974 } | |
| 7975 /** | |
| 7976 * Sets styles to be used for rendering the widget content. | |
| 7977 * <p> | |
| 7978 * All styles in the widget will be replaced with the given set of ranges and styles. | |
| 7979 * The ranges array contains start and length pairs. Each pair refers to | |
| 7980 * the corresponding style in the styles array. For example, the pair | |
| 7981 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 7982 * at styles[n/2]. The range fields within each StyleRange are ignored. | |
| 7983 * If either argument is null, the styles are cleared. | |
| 7984 * </p><p> | |
| 7985 * Note: It is expected that the same instance of a StyleRange will occur | |
| 7986 * multiple times within the styles array, reducing memory usage. | |
| 7987 * </p><p> | |
| 7988 * Should not be called if a LineStyleListener has been set since the | |
| 7989 * listener maintains the styles. | |
| 7990 * </p> | |
| 7991 * | |
| 7992 * @param ranges the array of ranges. The ranges must not overlap and must be in order. | |
| 7993 * @param styles the array of StyleRanges. The range fields within the StyleRange are unused. | |
| 7994 * | |
| 7995 * @exception SWTException <ul> | |
| 7996 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7997 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7998 * </ul> | |
| 7999 * @exception IllegalArgumentException <ul> | |
| 8000 * <li>ERROR_NULL_ARGUMENT when an element in the styles array is null</li> | |
| 8001 * <li>ERROR_INVALID_RANGE when the number of ranges and style do not match (ranges.length * 2 is styles.length)</li> | |
| 8002 * <li>ERROR_INVALID_RANGE when a range is outside the valid range (> getCharCount() or less than zero)</li> | |
| 8003 * <li>ERROR_INVALID_RANGE when a range overlaps</li> | |
| 8004 * </ul> | |
| 8005 * | |
| 8006 * @since 3.2 | |
| 8007 */ | |
| 8008 public void setStyleRanges(int[] ranges, StyleRange[] styles) { | |
| 8009 checkWidget(); | |
| 8010 if (isListening(LineGetStyle)) return; | |
| 8011 if (ranges is null || styles is null) { | |
| 8012 setStyleRanges(0, 0, null, null, true); | |
| 8013 } else { | |
| 8014 setStyleRanges(0, 0, ranges, styles, true); | |
| 8015 } | |
| 8016 } | |
| 8017 void setStyleRanges(int start, int length, int[] ranges, StyleRange[] styles, bool reset) { | |
| 8018 int charCount = content.getCharCount(); | |
| 8019 int end = start + length; | |
| 8020 if (start > end || start < 0) { | |
| 8021 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 8022 } | |
| 8023 if (styles !is null) { | |
| 8024 if (end > charCount) { | |
| 8025 SWT.error(SWT.ERROR_INVALID_RANGE); | |
| 8026 } | |
| 8027 if (ranges !is null) { | |
| 8028 if (ranges.length !is styles.length << 1) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 8029 } | |
| 8030 int lastOffset = 0; | |
| 8031 bool variableHeight = false; | |
| 8032 for (int i = 0; i < styles.length; i ++) { | |
| 8033 if (styles[i] is null) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 8034 int rangeStart, rangeLength; | |
| 8035 if (ranges !is null) { | |
| 8036 rangeStart = ranges[i << 1]; | |
| 8037 rangeLength = ranges[(i << 1) + 1]; | |
| 8038 } else { | |
| 8039 rangeStart = styles[i].start; | |
| 8040 rangeLength = styles[i].length; | |
| 8041 } | |
| 8042 if (rangeLength < 0) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 8043 if (!(0 <= rangeStart && rangeStart + rangeLength <= charCount)) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 8044 if (lastOffset > rangeStart) SWT.error(SWT.ERROR_INVALID_ARGUMENT); | |
| 8045 variableHeight |= styles[i].isVariableHeight(); | |
| 8046 lastOffset = rangeStart + rangeLength; | |
| 8047 } | |
| 8048 if (variableHeight) setVariableLineHeight(); | |
| 8049 } | |
| 8050 int rangeStart = start, rangeEnd = end; | |
| 8051 if (styles !is null && styles.length > 0) { | |
| 8052 if (ranges !is null) { | |
| 8053 rangeStart = ranges[0]; | |
| 8054 rangeEnd = ranges[ranges.length - 2] + ranges[ranges.length - 1]; | |
| 8055 } else { | |
| 8056 rangeStart = styles[0].start; | |
| 8057 rangeEnd = styles[styles.length - 1].start + styles[styles.length - 1].length; | |
| 8058 } | |
| 8059 } | |
| 8060 int lastLineBottom = 0; | |
| 8061 if (!isFixedLineHeight() && !reset) { | |
| 8062 int lineEnd = content.getLineAtOffset(Math.max(end, rangeEnd)); | |
| 8063 int partialTopIndex = getPartialTopIndex(); | |
| 8064 int partialBottomIndex = getPartialBottomIndex(); | |
| 8065 if (partialTopIndex <= lineEnd && lineEnd <= partialBottomIndex) { | |
| 8066 lastLineBottom = getLinePixel(lineEnd + 1); | |
| 8067 } | |
| 8068 } | |
| 8069 if (reset) { | |
| 8070 renderer.setStyleRanges(null, null); | |
| 8071 } else { | |
| 8072 renderer.updateRanges(start, length, length); | |
| 8073 } | |
| 8074 if (styles !is null && styles.length > 0) { | |
| 8075 renderer.setStyleRanges(ranges, styles); | |
| 8076 } | |
| 8077 if (reset) { | |
| 8078 resetCache(0, content.getLineCount()); | |
| 8079 super.redraw(); | |
| 8080 } else { | |
| 8081 int lineStart = content.getLineAtOffset(Math.min(start, rangeStart)); | |
| 8082 int lineEnd = content.getLineAtOffset(Math.max(end, rangeEnd)); | |
| 8083 resetCache(lineStart, lineEnd - lineStart + 1); | |
| 8084 int partialTopIndex = getPartialTopIndex(); | |
| 8085 int partialBottomIndex = getPartialBottomIndex(); | |
| 8086 if (!(lineStart > partialBottomIndex || lineEnd < partialTopIndex)) { | |
| 8087 int y = 0; | |
| 8088 int height = clientAreaHeight; | |
| 8089 if (partialTopIndex <= lineStart && lineStart <= partialBottomIndex) { | |
| 8090 int lineTop = Math.max(y, getLinePixel(lineStart)); | |
| 8091 y = lineTop; | |
| 8092 height -= lineTop; | |
| 8093 } | |
| 8094 if (partialTopIndex <= lineEnd && lineEnd <= partialBottomIndex) { | |
| 8095 int newLastLineBottom = getLinePixel(lineEnd + 1); | |
| 8096 if (!isFixedLineHeight()) { | |
| 8097 scrollText(lastLineBottom, newLastLineBottom); | |
| 8098 } | |
| 8099 height = newLastLineBottom - y; | |
| 8100 } | |
| 8101 super.redraw(0, y, clientAreaWidth, height, false); | |
| 8102 } | |
| 8103 } | |
| 8104 setCaretLocation(); | |
| 8105 } | |
| 8106 /** | |
| 8107 * Sets styles to be used for rendering the widget content. All styles | |
| 8108 * in the widget will be replaced with the given set of styles. | |
| 8109 * <p> | |
| 8110 * Note: Because a StyleRange includes the start and length, the | |
| 8111 * same instance cannot occur multiple times in the array of styles. | |
| 8112 * If the same style attributes, such as font and color, occur in | |
| 8113 * multiple StyleRanges, <code>setStyleRanges(int[], StyleRange[])</code> | |
| 8114 * can be used to share styles and reduce memory usage. | |
| 8115 * </p><p> | |
| 8116 * Should not be called if a LineStyleListener has been set since the | |
| 8117 * listener maintains the styles. | |
| 8118 * </p> | |
| 8119 * | |
| 8120 * @param ranges StyleRange objects containing the style information. | |
| 8121 * The ranges should not overlap. The style rendering is undefined if | |
| 8122 * the ranges do overlap. Must not be null. The styles need to be in order. | |
| 8123 * @exception SWTException <ul> | |
| 8124 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8125 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8126 * </ul> | |
| 8127 * @exception IllegalArgumentException <ul> | |
| 8128 * <li>ERROR_INVALID_RANGE when the last of the style ranges is outside the valid range (> getCharCount())</li> | |
| 8129 * </ul> | |
| 8130 * | |
| 8131 * @see #setStyleRanges(int[], StyleRange[]) | |
| 8132 */ | |
| 8133 public void setStyleRanges(StyleRange[] ranges) { | |
| 8134 checkWidget(); | |
| 8135 if (isListening(LineGetStyle)) return; | |
| 8136 // SWT extension: allow null for zero length string | |
| 8137 //if (ranges is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 8138 setStyleRanges(0, 0, null, ranges, true); | |
| 8139 } | |
| 8140 /** | |
| 8141 * Sets the tab width. | |
| 8142 * | |
| 8143 * @param tabs tab width measured in characters. | |
| 8144 * @exception SWTException <ul> | |
| 8145 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8146 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8147 * </ul> | |
| 8148 */ | |
| 8149 public void setTabs(int tabs) { | |
| 8150 checkWidget(); | |
| 8151 tabLength = tabs; | |
| 8152 renderer.setFont(null, tabs); | |
| 8153 resetCache(0, content.getLineCount()); | |
| 8154 setCaretLocation(); | |
| 8155 super.redraw(); | |
| 8156 } | |
| 8157 /** | |
| 8158 * Sets the widget content. | |
| 8159 * If the widget has the SWT.SINGLE style and "text" contains more than | |
| 8160 * one line, only the first line is rendered but the text is stored | |
| 8161 * unchanged. A subsequent call to getText will return the same text | |
| 8162 * that was set. | |
| 8163 * <p> | |
| 8164 * <b>Note:</b> Only a single line of text should be set when the SWT.SINGLE | |
| 8165 * style is used. | |
| 8166 * </p> | |
| 8167 * | |
| 8168 * @param text new widget content. Replaces existing content. Line styles | |
| 8169 * that were set using StyledText API are discarded. The | |
| 8170 * current selection is also discarded. | |
| 8171 * @exception SWTException <ul> | |
| 8172 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8173 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8174 * </ul> | |
| 8175 */ | |
| 8176 public void setText(String text) { | |
| 8177 checkWidget(); | |
| 8178 // SWT extension: allow null for zero length string | |
| 8179 // if (text is null) { | |
| 8180 // SWT.error(SWT.ERROR_NULL_ARGUMENT); | |
| 8181 // } | |
| 8182 Event event = new Event(); | |
| 8183 event.start = 0; | |
| 8184 event.end = getCharCount(); | |
| 8185 event.text = text; | |
| 8186 event.doit = true; | |
| 8187 notifyListeners(SWT.Verify, event); | |
| 8188 if (event.doit) { | |
| 8189 StyledTextEvent styledTextEvent = null; | |
| 8190 if (isListening(ExtendedModify)) { | |
| 8191 styledTextEvent = new StyledTextEvent(content); | |
| 8192 styledTextEvent.start = event.start; | |
| 8193 styledTextEvent.end = event.start + event.text.length; | |
| 8194 styledTextEvent.text = content.getTextRange(event.start, event.end - event.start); | |
| 8195 } | |
| 8196 content.setText(event.text); | |
| 8197 sendModifyEvent(event); | |
| 8198 if (styledTextEvent !is null) { | |
| 8199 notifyListeners(ExtendedModify, styledTextEvent); | |
| 8200 } | |
| 8201 } | |
| 8202 } | |
| 8203 /** | |
| 8204 * Sets the text limit to the specified number of characters. | |
| 8205 * <p> | |
| 8206 * The text limit specifies the amount of text that | |
| 8207 * the user can type into the widget. | |
| 8208 * </p> | |
| 8209 * | |
| 8210 * @param limit the new text limit. | |
| 8211 * @exception SWTException <ul> | |
| 8212 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8213 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8214 * </ul> | |
| 8215 * @exception IllegalArgumentException <ul> | |
| 8216 * <li>ERROR_CANNOT_BE_ZERO when limit is 0</li> | |
| 8217 * </ul> | |
| 8218 */ | |
| 8219 public void setTextLimit(int limit) { | |
| 8220 checkWidget(); | |
| 8221 if (limit is 0) { | |
| 8222 SWT.error(SWT.ERROR_CANNOT_BE_ZERO); | |
| 8223 } | |
| 8224 textLimit = limit; | |
| 8225 } | |
| 8226 /** | |
| 8227 * Sets the top index. Do nothing if there is no text set. | |
| 8228 * <p> | |
| 8229 * The top index is the index of the line that is currently at the top | |
| 8230 * of the widget. The top index changes when the widget is scrolled. | |
| 8231 * Indexing starts from zero. | |
| 8232 * Note: The top index is reset to 0 when new text is set in the widget. | |
| 8233 * </p> | |
| 8234 * | |
| 8235 * @param topIndex new top index. Must be between 0 and | |
| 8236 * getLineCount() - fully visible lines per page. If no lines are fully | |
| 8237 * visible the maximum value is getLineCount() - 1. An out of range | |
| 8238 * index will be adjusted accordingly. | |
| 8239 * @exception SWTException <ul> | |
| 8240 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8241 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8242 * </ul> | |
| 8243 */ | |
| 8244 public void setTopIndex(int topIndex) { | |
| 8245 checkWidget(); | |
| 8246 if (getCharCount() is 0) { | |
| 8247 return; | |
| 8248 } | |
| 8249 int lineCount = content.getLineCount(), pixel; | |
| 8250 if (isFixedLineHeight()) { | |
| 8251 int pageSize = Math.max(1, Math.min(lineCount, getLineCountWhole())); | |
| 8252 if (topIndex < 0) { | |
| 8253 topIndex = 0; | |
| 8254 } else if (topIndex > lineCount - pageSize) { | |
| 8255 topIndex = lineCount - pageSize; | |
| 8256 } | |
| 8257 pixel = getLinePixel(topIndex); | |
| 8258 } else { | |
| 8259 topIndex = Math.max(0, Math.min(lineCount - 1, topIndex)); | |
| 8260 pixel = getLinePixel(topIndex); | |
| 8261 if (pixel > 0) { | |
| 8262 pixel = getAvailableHeightBellow(pixel); | |
| 8263 } else { | |
| 8264 pixel = getAvailableHeightAbove(pixel); | |
| 8265 } | |
| 8266 } | |
| 8267 scrollVertical(pixel, true); | |
| 8268 } | |
| 8269 /** | |
| 8270 * Sets the top pixel offset. Do nothing if there is no text set. | |
| 8271 * <p> | |
| 8272 * The top pixel offset is the vertical pixel offset of the widget. The | |
| 8273 * widget is scrolled so that the given pixel position is at the top. | |
| 8274 * The top index is adjusted to the corresponding top line. | |
| 8275 * Note: The top pixel is reset to 0 when new text is set in the widget. | |
| 8276 * </p> | |
| 8277 * | |
| 8278 * @param pixel new top pixel offset. Must be between 0 and | |
| 8279 * (getLineCount() - visible lines per page) / getLineHeight()). An out | |
| 8280 * of range offset will be adjusted accordingly. | |
| 8281 * @exception SWTException <ul> | |
| 8282 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8283 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8284 * </ul> | |
| 8285 * @since 2.0 | |
| 8286 */ | |
| 8287 public void setTopPixel(int pixel) { | |
| 8288 checkWidget(); | |
| 8289 if (getCharCount() is 0) { | |
| 8290 return; | |
| 8291 } | |
| 8292 if (pixel < 0) pixel = 0; | |
| 8293 int lineCount = content.getLineCount(); | |
| 8294 int height = clientAreaHeight - topMargin - bottomMargin; | |
| 8295 int verticalOffset = getVerticalScrollOffset(); | |
| 8296 if (isFixedLineHeight()) { | |
| 8297 int maxTopPixel = Math.max(0, lineCount * getVerticalIncrement() - height); | |
| 8298 if (pixel > maxTopPixel) pixel = maxTopPixel; | |
| 8299 pixel -= verticalOffset; | |
| 8300 } else { | |
| 8301 pixel -= verticalOffset; | |
| 8302 if (pixel > 0) { | |
| 8303 pixel = getAvailableHeightBellow(pixel); | |
| 8304 } | |
| 8305 } | |
| 8306 scrollVertical(pixel, true); | |
| 8307 } | |
| 8308 /** | |
| 8309 * Sets whether the widget wraps lines. | |
| 8310 * <p> | |
| 8311 * This overrides the creation style bit SWT.WRAP. | |
| 8312 * </p> | |
| 8313 * | |
| 8314 * @param wrap true=widget wraps lines, false=widget does not wrap lines | |
| 8315 * @since 2.0 | |
| 8316 */ | |
| 8317 public void setWordWrap(bool wrap) { | |
| 8318 checkWidget(); | |
| 8319 if ((getStyle() & SWT.SINGLE) !is 0) return; | |
| 8320 if (wordWrap is wrap) return; | |
| 8321 wordWrap = wrap; | |
| 8322 setVariableLineHeight(); | |
| 8323 resetCache(0, content.getLineCount()); | |
| 8324 horizontalScrollOffset = 0; | |
| 8325 ScrollBar horizontalBar = getHorizontalBar(); | |
| 8326 if (horizontalBar !is null) { | |
| 8327 horizontalBar.setVisible(!wordWrap); | |
| 8328 } | |
| 8329 setScrollBars(true); | |
| 8330 setCaretLocation(); | |
| 8331 super.redraw(); | |
| 8332 } | |
| 8333 // SWT: If necessary, scroll to show the location | |
| 8334 bool showLocation(Rectangle rect, bool scrollPage) { | |
| 8335 int clientAreaWidth = this.clientAreaWidth - leftMargin - rightMargin; | |
| 8336 int clientAreaHeight = this.clientAreaHeight - topMargin - bottomMargin; | |
| 8337 bool scrolled = false; | |
| 8338 if (rect.y <= topMargin) { | |
| 8339 scrolled = scrollVertical(rect.y - topMargin, true); | |
| 8340 } else if (rect.y + rect.height > clientAreaHeight) { | |
| 8341 if (clientAreaHeight is 0) { | |
| 8342 scrolled = scrollVertical(rect.y, true); | |
| 8343 } else { | |
| 8344 scrolled = scrollVertical(rect.y + rect.height - clientAreaHeight, true); | |
| 8345 } | |
| 8346 } | |
| 8347 if (clientAreaWidth > 0) { | |
| 8348 int minScroll = scrollPage ? clientAreaWidth / 4 : 0; | |
| 8349 if (rect.x < leftMargin) { | |
| 8350 int scrollWidth = Math.max(leftMargin - rect.x, minScroll); | |
| 8351 int maxScroll = horizontalScrollOffset; | |
| 8352 scrolled = scrollHorizontal(-Math.min(maxScroll, scrollWidth), true); | |
| 8353 } else if (rect.x + rect.width > clientAreaWidth) { | |
| 8354 int scrollWidth = Math.max(rect.x + rect.width - clientAreaWidth, minScroll); | |
| 8355 int maxScroll = renderer.getWidth() - horizontalScrollOffset - this.clientAreaWidth; | |
| 8356 scrolled = scrollHorizontal(Math.min(maxScroll, scrollWidth), true); | |
| 8357 } | |
| 8358 } | |
| 8359 return scrolled; | |
| 8360 } | |
| 8361 /** | |
| 8362 * Sets the caret location and scrolls the caret offset into view. | |
| 8363 */ | |
| 8364 void showCaret() { | |
| 8365 Rectangle bounds = getBoundsAtOffset(caretOffset); | |
| 8366 if (!showLocation(bounds, true)) { | |
| 8367 setCaretLocation(); | |
| 8368 } | |
| 8369 } | |
| 8370 /** | |
| 8371 * Scrolls the selection into view. | |
| 8372 * <p> | |
| 8373 * The end of the selection will be scrolled into view. | |
| 8374 * Note that if a right-to-left selection exists, the end of the selection is | |
| 8375 * the visual beginning of the selection (i.e., where the caret is located). | |
| 8376 * </p> | |
| 8377 * | |
| 8378 * @exception SWTException <ul> | |
| 8379 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8380 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8381 * </ul> | |
| 8382 */ | |
| 8383 public void showSelection() { | |
| 8384 checkWidget(); | |
| 8385 // is selection from right-to-left? | |
| 8386 bool rightToLeft = caretOffset is selection.x; | |
| 8387 int startOffset, endOffset; | |
| 8388 if (rightToLeft) { | |
| 8389 startOffset = selection.y; | |
| 8390 endOffset = selection.x; | |
| 8391 } else { | |
| 8392 startOffset = selection.x; | |
| 8393 endOffset = selection.y; | |
| 8394 } | |
| 8395 | |
| 8396 Rectangle startBounds = getBoundsAtOffset(startOffset); | |
| 8397 Rectangle endBounds = getBoundsAtOffset(endOffset); | |
| 8398 | |
| 8399 // can the selection be fully displayed within the widget's visible width? | |
| 8400 int w = clientAreaWidth - leftMargin - rightMargin; | |
| 8401 bool selectionFits = rightToLeft ? startBounds.x - endBounds.x <= w : endBounds.x - startBounds.x <= w; | |
| 8402 if (selectionFits) { | |
| 8403 // show as much of the selection as possible by first showing | |
| 8404 // the start of the selection | |
| 8405 if (showLocation(startBounds, false)) { | |
| 8406 // endX value could change if showing startX caused a scroll to occur | |
| 8407 endBounds = getBoundsAtOffset(endOffset); | |
| 8408 } | |
| 8409 // the character at endOffset is not part of the selection | |
| 8410 endBounds.width = 0; | |
| 8411 showLocation(endBounds, false); | |
| 8412 } else { | |
| 8413 // just show the end of the selection since the selection start | |
| 8414 // will not be visible | |
| 8415 showLocation(endBounds, true); | |
| 8416 } | |
| 8417 } | |
| 8418 /** | |
| 8419 * Updates the selection and caret position depending on the text change. | |
| 8420 * <p> | |
| 8421 * If the selection intersects with the replaced text, the selection is | |
| 8422 * reset and the caret moved to the end of the new text. | |
| 8423 * If the selection is behind the replaced text it is moved so that the | |
| 8424 * same text remains selected. If the selection is before the replaced text | |
| 8425 * it is left unchanged. | |
| 8426 * </p> | |
| 8427 * | |
| 8428 * @param startOffset offset of the text change | |
| 8429 * @param replacedLength length of text being replaced | |
| 8430 * @param newLength length of new text | |
| 8431 */ | |
| 8432 void updateSelection(int startOffset, int replacedLength, int newLength) { | |
| 8433 if (selection.y <= startOffset) { | |
| 8434 // selection ends before text change | |
| 8435 if (wordWrap) setCaretLocation(); | |
| 8436 return; | |
| 8437 } | |
| 8438 if (selection.x < startOffset) { | |
| 8439 // clear selection fragment before text change | |
| 8440 internalRedrawRange(selection.x, startOffset - selection.x); | |
| 8441 } | |
| 8442 if (selection.y > startOffset + replacedLength && selection.x < startOffset + replacedLength) { | |
| 8443 // clear selection fragment after text change. | |
| 8444 // do this only when the selection is actually affected by the | |
| 8445 // change. Selection is only affected if it intersects the change (1GDY217). | |
| 8446 int netNewLength = newLength - replacedLength; | |
| 8447 int redrawStart = startOffset + newLength; | |
| 8448 internalRedrawRange(redrawStart, selection.y + netNewLength - redrawStart); | |
| 8449 } | |
| 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 } | |
| 8459 } |