Mercurial > projects > dwt-win
annotate dwt/custom/StyledText.d @ 254:a73bd022b5ac
Add version TANGOSVN
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sat, 12 Jul 2008 11:56:46 +0200 |
| parents | dffb802cad03 |
| children | a63e2cd5485e |
| rev | line source |
|---|---|
| 155 | 1 /******************************************************************************* |
| 246 | 2 * Copyright (c) 2000, 2008 IBM Corporation and others. |
| 155 | 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 dwt.custom.StyledText; | |
| 14 | |
| 15 | |
| 16 import dwt.DWT; | |
| 17 import dwt.DWTError; | |
| 18 import dwt.DWTException; | |
| 19 import dwt.accessibility.ACC; | |
| 20 import dwt.accessibility.Accessible; | |
| 21 import dwt.accessibility.AccessibleAdapter; | |
| 22 import dwt.accessibility.AccessibleControlAdapter; | |
| 23 import dwt.accessibility.AccessibleControlEvent; | |
| 24 import dwt.accessibility.AccessibleEvent; | |
| 25 import dwt.accessibility.AccessibleTextAdapter; | |
| 26 import dwt.accessibility.AccessibleTextEvent; | |
| 27 import dwt.dnd.Clipboard; | |
| 28 import dwt.dnd.DND; | |
| 29 import dwt.dnd.RTFTransfer; | |
| 30 import dwt.dnd.TextTransfer; | |
| 31 import dwt.dnd.Transfer; | |
| 32 import dwt.events.ModifyListener; | |
| 33 import dwt.events.SelectionEvent; | |
| 34 import dwt.events.SelectionListener; | |
| 35 import dwt.events.VerifyListener; | |
| 36 import dwt.graphics.Color; | |
| 37 import dwt.graphics.Cursor; | |
| 38 import dwt.graphics.Font; | |
| 39 import dwt.graphics.FontData; | |
| 40 import dwt.graphics.FontMetrics; | |
| 41 import dwt.graphics.GC; | |
| 42 import dwt.graphics.GlyphMetrics; | |
| 43 import dwt.graphics.Image; | |
| 44 import dwt.graphics.Device; | |
| 45 import dwt.graphics.Point; | |
| 46 import dwt.graphics.Rectangle; | |
| 47 import dwt.graphics.Resource; | |
| 48 import dwt.graphics.TextLayout; | |
| 49 import dwt.internal.BidiUtil; | |
| 50 import dwt.internal.Compatibility; | |
| 51 import dwt.printing.Printer; | |
| 52 import dwt.printing.PrinterData; | |
| 53 import dwt.widgets.Canvas; | |
| 54 import dwt.widgets.Caret; | |
| 55 import dwt.widgets.Composite; | |
| 56 import dwt.widgets.Control; | |
| 57 import dwt.widgets.Display; | |
| 58 import dwt.widgets.Event; | |
| 213 | 59 import dwt.widgets.IME; |
| 155 | 60 import dwt.widgets.Label; |
| 61 import dwt.widgets.Listener; | |
| 62 import dwt.widgets.ScrollBar; | |
| 63 import dwt.widgets.TypedListener; | |
| 64 import dwt.custom.StyledTextContent; | |
| 65 import dwt.custom.TextChangeListener; | |
| 66 import dwt.custom.StyledTextRenderer; | |
| 67 import dwt.custom.StyledTextPrintOptions; | |
| 68 import dwt.custom.ExtendedModifyListener; | |
| 69 import dwt.custom.BidiSegmentListener; | |
| 70 import dwt.custom.LineBackgroundListener; | |
| 71 import dwt.custom.LineStyleListener; | |
| 72 import dwt.custom.PaintObjectListener; | |
| 73 import dwt.custom.VerifyKeyListener; | |
| 74 import dwt.custom.MovementListener; | |
| 75 import dwt.custom.Bullet; | |
| 76 import dwt.custom.StyledTextEvent; | |
| 77 import dwt.custom.StyleRange; | |
| 78 import dwt.custom.TextChangedEvent; | |
| 79 import dwt.custom.TextChangingEvent; | |
| 80 import dwt.custom.DefaultContent; | |
| 81 import dwt.custom.StyledTextDropTargetEffect; | |
| 82 import dwt.custom.StyledTextListener; | |
| 83 import dwt.custom.ST; | |
| 84 import dwt.dwthelper.Runnable; | |
| 85 | |
| 86 static import tango.text.Text; | |
| 87 static import tango.text.Util; | |
| 254 | 88 version(TANGOSVN){ |
| 89 static import tango.io.model.IFile; | |
| 90 } | |
| 91 else{ | |
| 92 static import tango.io.FileConst; | |
| 93 } | |
| 155 | 94 static import tango.text.convert.Utf; |
| 95 import tango.util.Convert; | |
| 96 import dwt.dwthelper.utils; | |
| 97 | |
| 98 alias tango.text.Text.Text!(char) StringBuffer; | |
| 99 | |
| 100 /** | |
| 101 * A StyledText is an editable user interface object that displays lines | |
| 102 * of text. The following style attributes can be defined for the text: | |
| 103 * <ul> | |
| 104 * <li>foreground color | |
| 105 * <li>background color | |
| 106 * <li>font style (bold, italic, bold-italic, regular) | |
| 107 * <li>underline | |
| 108 * <li>strikeout | |
| 109 * </ul> | |
| 110 * <p> | |
| 111 * In addition to text style attributes, the background color of a line may | |
| 112 * be specified. | |
| 113 * </p><p> | |
| 114 * There are two ways to use this widget when specifying text style information. | |
| 115 * You may use the API that is defined for StyledText or you may define your own | |
| 116 * LineStyleListener. If you define your own listener, you will be responsible | |
| 117 * for maintaining the text style information for the widget. IMPORTANT: You may | |
| 118 * not define your own listener and use the StyledText API. The following | |
| 119 * StyledText API is not supported if you have defined a LineStyleListener: | |
| 120 * <ul> | |
| 121 * <li>getStyleRangeAtOffset(int) | |
| 122 * <li>getStyleRanges() | |
| 123 * <li>replaceStyleRanges(int,int,StyleRange[]) | |
| 124 * <li>setStyleRange(StyleRange) | |
| 125 * <li>setStyleRanges(StyleRange[]) | |
| 126 * </ul> | |
| 127 * </p><p> | |
| 128 * There are two ways to use this widget when specifying line background colors. | |
| 129 * You may use the API that is defined for StyledText or you may define your own | |
| 130 * LineBackgroundListener. If you define your own listener, you will be responsible | |
| 131 * for maintaining the line background color information for the widget. | |
| 132 * IMPORTANT: You may not define your own listener and use the StyledText API. | |
| 133 * The following StyledText API is not supported if you have defined a | |
| 134 * LineBackgroundListener: | |
| 135 * <ul> | |
| 136 * <li>getLineBackground(int) | |
| 137 * <li>setLineBackground(int,int,Color) | |
| 138 * </ul> | |
| 139 * </p><p> | |
| 140 * The content implementation for this widget may also be user-defined. To do so, | |
| 141 * you must implement the StyledTextContent interface and use the StyledText API | |
| 142 * setContent(StyledTextContent) to initialize the widget. | |
| 143 * </p><p> | |
| 144 * <dl> | |
| 145 * <dt><b>Styles:</b><dd>FULL_SELECTION, MULTI, READ_ONLY, SINGLE, WRAP | |
| 146 * <dt><b>Events:</b><dd>ExtendedModify, LineGetBackground, LineGetSegments, LineGetStyle, Modify, Selection, Verify, VerifyKey | |
| 147 * </dl> | |
| 148 * </p><p> | |
| 149 * IMPORTANT: This class is <em>not</em> intended to be subclassed. | |
| 150 * </p> | |
| 246 | 151 * |
| 152 * @see <a href="http://www.eclipse.org/swt/snippets/#styledtext">StyledText snippets</a> | |
| 153 * @see <a href="http://www.eclipse.org/swt/examples.php">DWT Examples: CustomControlExample, TextEditor</a> | |
| 154 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> | |
| 155 | 155 */ |
| 156 public class StyledText : Canvas { | |
| 157 | |
| 158 alias Canvas.computeSize computeSize; | |
| 159 | |
| 160 static const char TAB = '\t'; | |
| 254 | 161 version(TANGOSVN){ |
| 162 static const String PlatformLineDelimiter = tango.io.model.IFile.FileConst.NewlineString; | |
| 163 } | |
| 164 else{ | |
|
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165 static const String PlatformLineDelimiter = tango.io.FileConst.FileConst.NewlineString; |
| 254 | 166 } |
| 155 | 167 static const int BIDI_CARET_WIDTH = 3; |
| 168 static const int DEFAULT_WIDTH = 64; | |
| 169 static const int DEFAULT_HEIGHT = 64; | |
| 170 static const int V_SCROLL_RATE = 50; | |
| 171 static const int H_SCROLL_RATE = 10; | |
| 172 | |
| 173 static const int ExtendedModify = 3000; | |
| 174 static const int LineGetBackground = 3001; | |
| 175 static const int LineGetStyle = 3002; | |
| 176 static const int TextChanging = 3003; | |
| 177 static const int TextSet = 3004; | |
| 178 static const int VerifyKey = 3005; | |
| 179 static const int TextChanged = 3006; | |
| 180 static const int LineGetSegments = 3007; | |
| 181 static const int PaintObject = 3008; | |
| 182 static const int WordNext = 3009; | |
| 183 static const int WordPrevious = 3010; | |
| 184 | |
| 185 static const int PREVIOUS_OFFSET_TRAILING = 0; | |
| 186 static const int OFFSET_LEADING = 1; | |
| 187 | |
| 188 Color selectionBackground; // selection background color | |
| 189 Color selectionForeground; // selection foreground color | |
| 190 StyledTextContent content; // native content (default or user specified) | |
| 191 StyledTextRenderer renderer; | |
| 192 Listener listener; | |
| 193 TextChangeListener textChangeListener; // listener for TextChanging, TextChanged and TextSet events from StyledTextContent | |
| 194 int verticalScrollOffset = 0; // pixel based | |
| 195 int horizontalScrollOffset = 0; // pixel based | |
| 196 int topIndex = 0; // top visible line | |
| 197 int topIndexY; | |
| 198 int clientAreaHeight = 0; // the client area height. Needed to calculate content width for new visible lines during Resize callback | |
| 199 int clientAreaWidth = 0; // the client area width. Needed during Resize callback to determine if line wrap needs to be recalculated | |
| 200 int tabLength = 4; // number of characters in a tab | |
| 201 int leftMargin; | |
| 202 int topMargin; | |
| 203 int rightMargin; | |
| 204 int bottomMargin; | |
| 205 int columnX; // keep track of the horizontal caret position when changing lines/pages. Fixes bug 5935 | |
| 206 int caretOffset = 0; | |
| 207 int caretAlignment; | |
| 208 Point selection; // x and y are start and end caret offsets of selection | |
| 209 Point clipboardSelection; // x and y are start and end caret offsets of previous selection | |
| 210 int selectionAnchor; // position of selection anchor. 0 based offset from beginning of text | |
| 211 Point doubleClickSelection; // selection after last mouse double click | |
| 212 bool editable = true; | |
| 213 bool wordWrap = false; | |
| 246 | 214 bool doubleClickEnabled = true; // see getDoubleClickEnabled |
| 215 bool overwrite = false; // insert/overwrite edit mode | |
| 155 | 216 int textLimit = -1; // limits the number of characters the user can type in the widget. Unlimited by default. |
| 217 int[int] keyActionMap; | |
| 218 Color background = null; // workaround for bug 4791 | |
| 219 Color foreground = null; // | |
| 220 Clipboard clipboard; | |
| 221 int clickCount; | |
| 222 int autoScrollDirection = DWT.NULL; // the direction of autoscrolling (up, down, right, left) | |
| 223 int autoScrollDistance = 0; | |
| 224 int lastTextChangeStart; // cache data of the | |
| 225 int lastTextChangeNewLineCount; // last text changing | |
| 226 int lastTextChangeNewCharCount; // event for use in the | |
| 227 int lastTextChangeReplaceLineCount; // text changed handler | |
| 228 int lastTextChangeReplaceCharCount; | |
| 229 int lastLineBottom; // the bottom pixel of the last line been replaced | |
| 230 bool isMirrored_; | |
| 246 | 231 bool bidiColoring = false; // apply the BIDI algorithm on text segments of the same color |
| 155 | 232 Image leftCaretBitmap = null; |
| 233 Image rightCaretBitmap = null; | |
| 234 int caretDirection = DWT.NULL; | |
| 213 | 235 int caretWidth = 0; |
| 155 | 236 Caret defaultCaret = null; |
| 237 bool updateCaretDirection = true; | |
| 238 bool fixedLineHeight; | |
| 239 bool dragDetect_ = true; | |
| 213 | 240 IME ime; |
| 155 | 241 |
| 242 int alignment; | |
| 243 bool justify; | |
| 244 int indent; | |
| 245 int lineSpacing; | |
| 246 | |
| 247 const static bool IS_CARBON, IS_GTK, IS_MOTIF; | |
| 248 static this(){ | |
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249 String platform = DWT.getPlatform(); |
| 155 | 250 IS_CARBON = ("carbon" == platform); |
| 251 IS_GTK = ("gtk" == platform); | |
| 252 IS_MOTIF = ("motif" == platform); | |
| 253 } | |
| 254 | |
| 255 /** | |
| 256 * The Printing class : printing of a range of text. | |
| 257 * An instance of <code>Printing</code> is returned in the | |
| 258 * StyledText#print(Printer) API. The run() method may be | |
| 259 * invoked from any thread. | |
| 260 */ | |
| 261 static class Printing : Runnable { | |
| 262 const static int LEFT = 0; // left aligned header/footer segment | |
| 263 const static int CENTER = 1; // centered header/footer segment | |
| 264 const static int RIGHT = 2; // right aligned header/footer segment | |
| 265 | |
| 266 Printer printer; | |
| 267 StyledTextRenderer printerRenderer; | |
| 268 StyledTextPrintOptions printOptions; | |
| 269 Rectangle clientArea; | |
| 270 FontData fontData; | |
| 271 Font printerFont; | |
| 272 Resource[Resource] resources; | |
| 273 int tabLength; | |
| 274 GC gc; // printer GC | |
| 275 int pageWidth; // width of a printer page in pixels | |
| 276 int startPage; // first page to print | |
| 277 int endPage; // last page to print | |
| 278 int startLine; // first (wrapped) line to print | |
| 279 int endLine; // last (wrapped) line to print | |
| 246 | 280 bool singleLine; // widget single line mode |
| 155 | 281 Point selection = null; // selected text |
| 246 | 282 bool mirrored; // indicates the printing gc should be mirrored |
| 155 | 283 int lineSpacing; |
| 284 int printMargin; | |
| 285 | |
| 286 /** | |
| 287 * Creates an instance of <code>Printing</code>. | |
| 288 * Copies the widget content and rendering data that needs | |
| 289 * to be requested from listeners. | |
| 290 * </p> | |
| 291 * @param parent StyledText widget to print. | |
| 292 * @param printer printer device to print on. | |
| 293 * @param printOptions print options | |
| 294 */ | |
| 295 this(StyledText styledText, Printer printer, StyledTextPrintOptions printOptions) { | |
| 296 this.printer = printer; | |
| 297 this.printOptions = printOptions; | |
| 298 this.mirrored = (styledText.getStyle() & DWT.MIRRORED) !is 0; | |
| 299 singleLine = styledText.isSingleLine(); | |
| 300 startPage = 1; | |
| 301 endPage = int.max; | |
| 302 PrinterData data = printer.getPrinterData(); | |
| 303 if (data.scope_ is PrinterData.PAGE_RANGE) { | |
| 304 startPage = data.startPage; | |
| 305 endPage = data.endPage; | |
| 306 if (endPage < startPage) { | |
| 307 int temp = endPage; | |
| 308 endPage = startPage; | |
| 309 startPage = temp; | |
| 310 } | |
| 311 } else if (data.scope_ is PrinterData.SELECTION) { | |
| 312 selection = styledText.getSelectionRange(); | |
| 313 } | |
| 314 printerRenderer = new StyledTextRenderer(printer, null); | |
| 315 printerRenderer.setContent(copyContent(styledText.getContent())); | |
| 316 cacheLineData(styledText); | |
| 317 } | |
| 318 /** | |
| 319 * Caches all line data that needs to be requested from a listener. | |
| 320 * </p> | |
| 321 * @param printerContent <code>StyledTextContent</code> to request | |
| 322 * line data for. | |
| 323 */ | |
| 324 void cacheLineData(StyledText styledText) { | |
| 325 StyledTextRenderer renderer = styledText.renderer; | |
| 326 renderer.copyInto(printerRenderer); | |
| 327 fontData = styledText.getFont().getFontData()[0]; | |
| 328 tabLength = styledText.tabLength; | |
| 329 int lineCount = printerRenderer.lineCount; | |
| 330 if (styledText.isListening(LineGetBackground) || (styledText.isBidi() && styledText.isListening(LineGetSegments)) || styledText.isListening(LineGetStyle)) { | |
| 331 StyledTextContent content = printerRenderer.content; | |
| 332 for (int i = 0; i < lineCount; i++) { | |
|
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parents:
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changeset
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333 String line = content.getLine(i); |
| 155 | 334 int lineOffset = content.getOffsetAtLine(i); |
| 335 StyledTextEvent event = styledText.getLineBackgroundData(lineOffset, line); | |
| 336 if (event !is null && event.lineBackground !is null) { | |
| 337 printerRenderer.setLineBackground(i, 1, event.lineBackground); | |
| 338 } | |
| 339 if (styledText.isBidi()) { | |
| 340 int[] segments = styledText.getBidiSegments(lineOffset, line); | |
| 341 printerRenderer.setLineSegments(i, 1, segments); | |
| 342 } | |
| 343 event = styledText.getLineStyleData(lineOffset, line); | |
| 344 if (event !is null) { | |
| 345 printerRenderer.setLineIndent(i, 1, event.indent); | |
| 346 printerRenderer.setLineAlignment(i, 1, event.alignment); | |
| 347 printerRenderer.setLineJustify(i, 1, event.justify); | |
| 348 printerRenderer.setLineBullet(i, 1, event.bullet); | |
| 349 StyleRange[] styles = event.styles; | |
| 350 if (styles !is null && styles.length > 0) { | |
| 351 printerRenderer.setStyleRanges(event.ranges, styles); | |
| 352 } | |
| 353 } | |
| 354 } | |
| 355 } | |
| 356 Point screenDPI = styledText.getDisplay().getDPI(); | |
| 357 Point printerDPI = printer.getDPI(); | |
| 358 resources = null; | |
| 359 for (int i = 0; i < lineCount; i++) { | |
| 360 Color color = printerRenderer.getLineBackground(i, null); | |
| 361 if (color !is null) { | |
| 362 if (printOptions.printLineBackground) { | |
| 363 Color printerColor; | |
| 364 if ( auto p = color in resources ) { | |
| 365 printerColor = cast(Color)*p; | |
| 366 } | |
| 367 else { | |
| 368 printerColor = new Color (printer, color.getRGB()); | |
| 369 resources[color]=printerColor; | |
| 370 } | |
| 371 printerRenderer.setLineBackground(i, 1, printerColor); | |
| 372 } else { | |
| 373 printerRenderer.setLineBackground(i, 1, null); | |
| 374 } | |
| 375 } | |
| 376 int indent = printerRenderer.getLineIndent(i, 0); | |
| 377 if (indent !is 0) { | |
| 378 printerRenderer.setLineIndent(i, 1, indent * printerDPI.x / screenDPI.x); | |
| 379 } | |
| 380 } | |
| 381 StyleRange[] styles = printerRenderer.styles; | |
| 382 for (int i = 0; i < printerRenderer.styleCount; i++) { | |
| 383 StyleRange style = styles[i]; | |
| 384 Font font = style.font; | |
| 385 if (style.font !is null) { | |
| 386 Font printerFont; | |
| 387 if ( auto p = font in resources ) { | |
| 388 printerFont = cast(Font)*p; | |
| 389 } | |
| 390 else { | |
| 391 printerFont = new Font (printer, font.getFontData()); | |
| 392 resources[font]= printerFont; | |
| 393 } | |
| 394 style.font = printerFont; | |
| 395 } | |
| 396 Color color = style.foreground; | |
| 397 if (color !is null) { | |
| 398 if (printOptions.printTextForeground) { | |
| 399 Color printerColor; | |
| 400 if ( auto p = color in resources ) { | |
| 401 printerColor = cast(Color)*p; | |
| 402 } | |
| 403 else { | |
| 404 printerColor = new Color (printer, color.getRGB()); | |
| 405 resources[color]=printerColor; | |
| 406 } | |
| 407 style.foreground = printerColor; | |
| 408 } else { | |
| 409 style.foreground = null; | |
| 410 } | |
| 411 } | |
| 412 color = style.background; | |
| 413 if (color !is null) { | |
| 414 if (printOptions.printTextBackground) { | |
| 415 Color printerColor; | |
| 416 if ( auto p = color in resources ) { | |
| 417 printerColor = cast(Color)*p; | |
| 418 } | |
| 419 else { | |
| 420 printerColor = new Color (printer, color.getRGB()); | |
| 421 resources[color]=printerColor; | |
| 422 } | |
| 423 style.background = printerColor; | |
| 424 } else { | |
| 425 style.background = null; | |
| 426 } | |
| 427 } | |
| 428 if (!printOptions.printTextFontStyle) { | |
| 429 style.fontStyle = DWT.NORMAL; | |
| 430 } | |
| 431 style.rise = style.rise * printerDPI.y / screenDPI.y; | |
| 432 GlyphMetrics metrics = style.metrics; | |
| 433 if (metrics !is null) { | |
| 434 metrics.ascent = metrics.ascent * printerDPI.y / screenDPI.y; | |
| 435 metrics.descent = metrics.descent * printerDPI.y / screenDPI.y; | |
| 436 metrics.width = metrics.width * printerDPI.x / screenDPI.x; | |
| 437 } | |
| 438 } | |
| 439 lineSpacing = styledText.lineSpacing * printerDPI.y / screenDPI.y; | |
| 440 if (printOptions.printLineNumbers) { | |
| 441 printMargin = 3 * printerDPI.x / screenDPI.x; | |
| 442 } | |
| 443 } | |
| 444 /** | |
| 445 * Copies the text of the specified <code>StyledTextContent</code>. | |
| 446 * </p> | |
| 447 * @param original the <code>StyledTextContent</code> to copy. | |
| 448 */ | |
| 449 StyledTextContent copyContent(StyledTextContent original) { | |
| 450 StyledTextContent printerContent = new DefaultContent(); | |
| 451 int insertOffset = 0; | |
| 452 for (int i = 0; i < original.getLineCount(); i++) { | |
| 453 int insertEndOffset; | |
| 454 if (i < original.getLineCount() - 1) { | |
| 455 insertEndOffset = original.getOffsetAtLine(i + 1); | |
| 456 } else { | |
| 457 insertEndOffset = original.getCharCount(); | |
| 458 } | |
| 459 printerContent.replaceTextRange(insertOffset, 0, original.getTextRange(insertOffset, insertEndOffset - insertOffset)); | |
| 460 insertOffset = insertEndOffset; | |
| 461 } | |
| 462 return printerContent; | |
| 463 } | |
| 464 /** | |
| 465 * Disposes of the resources and the <code>PrintRenderer</code>. | |
| 466 */ | |
| 467 void dispose() { | |
| 468 if (gc !is null) { | |
| 469 gc.dispose(); | |
| 470 gc = null; | |
| 471 } | |
| 472 foreach( resource; resources.values ){ | |
| 473 resource.dispose(); | |
| 474 } | |
| 475 resources = null; | |
| 476 if (printerFont !is null) { | |
| 477 printerFont.dispose(); | |
| 478 printerFont = null; | |
| 479 } | |
| 480 if (printerRenderer !is null) { | |
| 481 printerRenderer.dispose(); | |
| 482 printerRenderer = null; | |
| 483 } | |
| 484 } | |
|
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parents:
178
diff
changeset
|
485 void init_() { |
| 155 | 486 Rectangle trim = printer.computeTrim(0, 0, 0, 0); |
| 487 Point dpi = printer.getDPI(); | |
| 488 | |
| 489 printerFont = new Font( cast(Device)printer, fontData.getName(), fontData.getHeight(), DWT.NORMAL); | |
| 490 clientArea = printer.getClientArea(); | |
| 491 pageWidth = clientArea.width; | |
| 492 // one inch margin around text | |
| 493 clientArea.x = dpi.x + trim.x; | |
| 494 clientArea.y = dpi.y + trim.y; | |
| 495 clientArea.width -= (clientArea.x + trim.width); | |
| 496 clientArea.height -= (clientArea.y + trim.height); | |
| 497 | |
| 498 int style = mirrored ? DWT.RIGHT_TO_LEFT : DWT.LEFT_TO_RIGHT; | |
| 499 gc = new GC(printer, style); | |
| 500 gc.setFont(printerFont); | |
| 501 printerRenderer.setFont(printerFont, tabLength); | |
| 502 int lineHeight = printerRenderer.getLineHeight(); | |
| 503 if (printOptions.header !is null) { | |
| 504 clientArea.y += lineHeight * 2; | |
| 505 clientArea.height -= lineHeight * 2; | |
| 506 } | |
| 507 if (printOptions.footer !is null) { | |
| 508 clientArea.height -= lineHeight * 2; | |
| 509 } | |
| 510 | |
| 511 // TODO not wrapped | |
| 512 StyledTextContent content = printerRenderer.content; | |
| 513 startLine = 0; | |
| 514 endLine = singleLine ? 0 : content.getLineCount() - 1; | |
| 515 PrinterData data = printer.getPrinterData(); | |
| 516 if (data.scope_ is PrinterData.PAGE_RANGE) { | |
| 517 int pageSize = clientArea.height / lineHeight;//WRONG | |
| 518 startLine = (startPage - 1) * pageSize; | |
| 519 } else if (data.scope_ is PrinterData.SELECTION) { | |
| 520 startLine = content.getLineAtOffset(selection.x); | |
| 521 if (selection.y > 0) { | |
| 522 endLine = content.getLineAtOffset(selection.x + selection.y - 1); | |
| 523 } else { | |
| 524 endLine = startLine - 1; | |
| 525 } | |
| 526 } | |
| 527 } | |
| 528 /** | |
| 529 * Prints the lines in the specified page range. | |
| 530 */ | |
| 531 void print() { | |
| 532 Color background = gc.getBackground(); | |
| 533 Color foreground = gc.getForeground(); | |
| 534 int paintY = clientArea.y; | |
| 535 int paintX = clientArea.x; | |
| 536 int width = clientArea.width; | |
| 537 int page = startPage; | |
| 538 int pageBottom = clientArea.y + clientArea.height; | |
| 539 int orientation = gc.getStyle() & (DWT.RIGHT_TO_LEFT | DWT.LEFT_TO_RIGHT); | |
| 540 TextLayout printLayout = null; | |
| 541 if (printOptions.printLineNumbers || printOptions.header !is null || printOptions.footer !is null) { | |
| 542 printLayout = new TextLayout(printer); | |
| 543 printLayout.setFont(printerFont); | |
| 544 } | |
| 545 if (printOptions.printLineNumbers) { | |
| 213 | 546 int numberingWidth = 0; |
| 155 | 547 int count = endLine - startLine + 1; |
| 213 | 548 String[] lineLabels = printOptions.lineLabels; |
| 549 if (lineLabels !is null) { | |
| 550 for (int i = startLine; i < Math.min(count, lineLabels.length); i++) { | |
| 551 if (lineLabels[i] !is null) { | |
| 552 printLayout.setText(lineLabels[i]); | |
| 553 int lineWidth = printLayout.getBounds().width; | |
| 554 numberingWidth = Math.max(numberingWidth, lineWidth); | |
| 555 } | |
| 556 } | |
| 557 } else { | |
| 558 StringBuffer buffer = new StringBuffer("0"); | |
| 559 while ((count /= 10) > 0) buffer.append("0"); | |
| 560 printLayout.setText(buffer.toString()); | |
| 561 numberingWidth = printLayout.getBounds().width; | |
| 562 } | |
| 563 numberingWidth += printMargin; | |
| 155 | 564 if (numberingWidth > width) numberingWidth = width; |
| 565 paintX += numberingWidth; | |
| 566 width -= numberingWidth; | |
| 567 } | |
| 568 for (int i = startLine; i <= endLine && page <= endPage; i++) { | |
| 569 if (paintY is clientArea.y) { | |
| 570 printer.startPage(); | |
| 571 printDecoration(page, true, printLayout); | |
| 572 } | |
| 573 TextLayout layout = printerRenderer.getTextLayout(i, orientation, width, lineSpacing); | |
| 574 Color lineBackground = printerRenderer.getLineBackground(i, background); | |
| 575 int paragraphBottom = paintY + layout.getBounds().height; | |
| 576 if (paragraphBottom <= pageBottom) { | |
| 577 //normal case, the whole paragraph fits in the current page | |
| 578 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); | |
| 579 paintY = paragraphBottom; | |
| 580 } else { | |
| 581 int lineCount = layout.getLineCount(); | |
| 582 while (paragraphBottom > pageBottom && lineCount > 0) { | |
| 583 lineCount--; | |
| 584 paragraphBottom -= layout.getLineBounds(lineCount).height + layout.getSpacing(); | |
| 585 } | |
| 586 if (lineCount is 0) { | |
| 587 //the whole paragraph goes to the next page | |
| 588 printDecoration(page, false, printLayout); | |
| 589 printer.endPage(); | |
| 590 page++; | |
| 591 if (page <= endPage) { | |
| 592 printer.startPage(); | |
| 593 printDecoration(page, true, printLayout); | |
| 594 paintY = clientArea.y; | |
| 595 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); | |
| 596 paintY += layout.getBounds().height; | |
| 597 } | |
| 598 } else { | |
| 599 //draw paragraph top in the current page and paragraph bottom in the next | |
| 600 int height = paragraphBottom - paintY; | |
| 213 | 601 gc.setClipping(clientArea.x, paintY, clientArea.width, height); |
| 155 | 602 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); |
| 213 | 603 gc.setClipping(cast(Rectangle)null); |
| 155 | 604 printDecoration(page, false, printLayout); |
| 605 printer.endPage(); | |
| 606 page++; | |
| 607 if (page <= endPage) { | |
| 608 printer.startPage(); | |
| 609 printDecoration(page, true, printLayout); | |
| 610 paintY = clientArea.y - height; | |
| 611 int layoutHeight = layout.getBounds().height; | |
| 213 | 612 gc.setClipping(clientArea.x, clientArea.y, clientArea.width, layoutHeight - height); |
| 155 | 613 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); |
| 213 | 614 gc.setClipping(cast(Rectangle)null); |
| 155 | 615 paintY += layoutHeight; |
| 616 } | |
| 617 } | |
| 618 } | |
| 619 printerRenderer.disposeTextLayout(layout); | |
| 620 } | |
| 213 | 621 if (page <= endPage && paintY > clientArea.y) { |
| 155 | 622 // close partial page |
| 623 printDecoration(page, false, printLayout); | |
| 624 printer.endPage(); | |
| 625 } | |
| 626 if (printLayout !is null) printLayout.dispose(); | |
| 627 } | |
| 628 /** | |
| 629 * Print header or footer decorations. | |
| 630 * | |
| 631 * @param page page number to print, if specified in the StyledTextPrintOptions header or footer. | |
| 632 * @param header true = print the header, false = print the footer | |
| 633 */ | |
| 634 void printDecoration(int page, bool header, TextLayout layout) { | |
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635 String text = header ? printOptions.header : printOptions.footer; |
| 155 | 636 if (text is null) return; |
| 637 int lastSegmentIndex = 0; | |
| 638 for (int i = 0; i < 3; i++) { | |
| 639 int segmentIndex = tango.text.Util.locatePattern( text, StyledTextPrintOptions.SEPARATOR, lastSegmentIndex); | |
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640 String segment; |
| 155 | 641 if (segmentIndex is text.length ) { |
| 642 segment = text[ lastSegmentIndex .. $ ].dup; | |
| 643 printDecorationSegment(segment, i, page, header, layout); | |
| 644 break; | |
| 645 } else { | |
| 646 segment = text[ lastSegmentIndex .. segmentIndex ].dup; | |
| 647 printDecorationSegment(segment, i, page, header, layout); | |
| 648 lastSegmentIndex = segmentIndex + StyledTextPrintOptions.SEPARATOR.length; | |
| 649 } | |
| 650 } | |
| 651 } | |
| 652 /** | |
| 653 * Print one segment of a header or footer decoration. | |
| 654 * Headers and footers have three different segments. | |
| 655 * One each for left aligned, centered, and right aligned text. | |
| 656 * | |
| 657 * @param segment decoration segment to print | |
| 658 * @param alignment alignment of the segment. 0=left, 1=center, 2=right | |
| 659 * @param page page number to print, if specified in the decoration segment. | |
| 660 * @param header true = print the header, false = print the footer | |
| 661 */ | |
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662 void printDecorationSegment(String segment, int alignment, int page, bool header, TextLayout layout) { |
| 155 | 663 int pageIndex = tango.text.Util.locatePattern( segment, StyledTextPrintOptions.PAGE_TAG ); |
| 664 if (pageIndex !is segment.length ) { | |
| 665 int pageTagLength = StyledTextPrintOptions.PAGE_TAG.length; | |
| 666 StringBuffer buffer = new StringBuffer(segment[ 0 .. pageIndex ]); | |
| 667 buffer.append (page); | |
| 668 buffer.append (segment[ pageIndex + pageTagLength .. $ ]); | |
| 669 segment = buffer.toString().dup; | |
| 670 } | |
| 671 if (segment.length > 0) { | |
| 672 layout.setText(segment); | |
| 673 int segmentWidth = layout.getBounds().width; | |
| 674 int segmentHeight = printerRenderer.getLineHeight(); | |
| 675 int drawX = 0, drawY; | |
| 676 if (alignment is LEFT) { | |
| 677 drawX = clientArea.x; | |
| 678 } else if (alignment is CENTER) { | |
| 679 drawX = (pageWidth - segmentWidth) / 2; | |
| 680 } else if (alignment is RIGHT) { | |
| 681 drawX = clientArea.x + clientArea.width - segmentWidth; | |
| 682 } | |
| 683 if (header) { | |
| 684 drawY = clientArea.y - segmentHeight * 2; | |
| 685 } else { | |
| 686 drawY = clientArea.y + clientArea.height + segmentHeight; | |
| 687 } | |
| 688 layout.draw(gc, drawX, drawY); | |
| 689 } | |
| 690 } | |
| 691 void printLine(int x, int y, GC gc, Color foreground, Color background, TextLayout layout, TextLayout printLayout, int index) { | |
| 692 if (background !is null) { | |
| 693 Rectangle rect = layout.getBounds(); | |
| 694 gc.setBackground(background); | |
| 695 gc.fillRectangle(x, y, rect.width, rect.height); | |
| 696 | |
| 697 // int lineCount = layout.getLineCount(); | |
| 698 // for (int i = 0; i < lineCount; i++) { | |
| 699 // Rectangle rect = layout.getLineBounds(i); | |
| 700 // rect.x += paintX; | |
| 701 // rect.y += paintY + layout.getSpacing(); | |
| 702 // rect.width = width;//layout bounds | |
| 703 // gc.fillRectangle(rect); | |
| 704 // } | |
| 705 } | |
| 706 if (printOptions.printLineNumbers) { | |
| 707 FontMetrics metrics = layout.getLineMetrics(0); | |
| 213 | 708 printLayout.setAscent(metrics.getAscent() + metrics.getLeading()); |
| 155 | 709 printLayout.setDescent(metrics.getDescent()); |
| 213 | 710 String[] lineLabels = printOptions.lineLabels; |
| 711 if (lineLabels !is null) { | |
| 712 if (0 <= index && index < lineLabels.length && lineLabels[index] !is null) { | |
| 713 printLayout.setText(lineLabels[index]); | |
| 714 } else { | |
| 715 printLayout.setText(""); | |
| 716 } | |
| 717 } else { | |
| 718 printLayout.setText( to!(String)(index) ); | |
| 719 } | |
| 155 | 720 int paintX = x - printMargin - printLayout.getBounds().width; |
| 721 printLayout.draw(gc, paintX, y); | |
| 722 printLayout.setAscent(-1); | |
| 723 printLayout.setDescent(-1); | |
| 724 } | |
| 725 gc.setForeground(foreground); | |
| 726 layout.draw(gc, x, y); | |
| 727 } | |
| 728 /** | |
| 729 * Starts a print job and prints the pages specified in the constructor. | |
| 730 */ | |
| 731 public void run() { | |
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732 String jobName = printOptions.jobName; |
| 155 | 733 if (jobName is null) { |
| 734 jobName = "Printing"; | |
| 735 } | |
| 736 if (printer.startJob(jobName)) { | |
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737 init_(); |
| 155 | 738 print(); |
| 739 dispose(); | |
| 740 printer.endJob(); | |
| 741 } | |
| 742 } | |
| 743 } | |
| 744 /** | |
| 745 * The <code>RTFWriter</code> class is used to write widget content as | |
| 746 * rich text. The implementation complies with the RTF specification | |
| 747 * version 1.5. | |
| 748 * <p> | |
| 749 * toString() is guaranteed to return a valid RTF string only after | |
| 750 * close() has been called. | |
| 751 * </p><p> | |
| 752 * Whole and partial lines and line breaks can be written. Lines will be | |
| 753 * formatted using the styles queried from the LineStyleListener, if | |
| 754 * set, or those set directly in the widget. All styles are applied to | |
| 755 * the RTF stream like they are rendered by the widget. In addition, the | |
| 756 * widget font name and size is used for the whole text. | |
| 757 * </p> | |
| 758 */ | |
| 759 class RTFWriter : TextWriter { | |
| 760 | |
| 761 alias TextWriter.write write; | |
| 762 | |
| 763 static const int DEFAULT_FOREGROUND = 0; | |
| 764 static const int DEFAULT_BACKGROUND = 1; | |
| 765 Color[] colorTable; | |
| 766 Font[] fontTable; | |
| 767 bool WriteUnicode; | |
| 768 | |
| 769 /** | |
| 770 * Creates a RTF writer that writes content starting at offset "start" | |
| 771 * in the document. <code>start</code> and <code>length</code>can be set to specify partial | |
| 772 * lines. | |
| 773 * | |
| 774 * @param start start offset of content to write, 0 based from | |
| 775 * beginning of document | |
| 776 * @param length length of content to write | |
| 777 */ | |
| 778 public this(int start, int length) { | |
| 779 super(start, length); | |
| 780 colorTable ~= getForeground(); | |
| 781 colorTable ~= getBackground(); | |
| 782 fontTable ~= getFont(); | |
| 783 setUnicode(); | |
| 784 } | |
| 785 /** | |
| 786 * Closes the RTF writer. Once closed no more content can be written. | |
| 787 * <b>NOTE:</b> <code>toString()</code> does not return a valid RTF string until | |
| 788 * <code>close()</code> has been called. | |
| 789 */ | |
| 790 public override void close() { | |
| 791 if (!isClosed()) { | |
| 792 writeHeader(); | |
| 793 write("\n}}\0"); | |
| 794 super.close(); | |
| 795 } | |
| 796 } | |
| 797 /** | |
| 798 * Returns the index of the specified color in the RTF color table. | |
| 799 * | |
| 800 * @param color the color | |
| 801 * @param defaultIndex return value if color is null | |
| 802 * @return the index of the specified color in the RTF color table | |
| 803 * or "defaultIndex" if "color" is null. | |
| 804 */ | |
| 805 int getColorIndex(Color color, int defaultIndex) { | |
| 806 if (color is null) return defaultIndex; | |
| 807 int index = -1; | |
| 808 foreach( i, col; colorTable ){ | |
| 809 if( col == color ){ | |
| 810 index = i; | |
| 811 break; | |
| 812 } | |
| 813 } | |
| 814 if (index is -1) { | |
| 815 index = colorTable.length; | |
| 816 colorTable ~= color; | |
| 817 } | |
| 818 return index; | |
| 819 } | |
| 820 /** | |
| 821 * Returns the index of the specified color in the RTF color table. | |
| 822 * | |
| 823 * @param color the color | |
| 824 * @param defaultIndex return value if color is null | |
| 825 * @return the index of the specified color in the RTF color table | |
| 826 * or "defaultIndex" if "color" is null. | |
| 827 */ | |
| 828 int getFontIndex(Font font) { | |
| 829 int index = -1; | |
| 830 foreach( i, f; colorTable ){ | |
| 831 if( f == font ){ | |
| 832 index = i; | |
| 833 break; | |
| 834 } | |
| 835 } | |
| 836 if (index is -1) { | |
| 837 index = fontTable.length; | |
| 838 fontTable ~= font; | |
| 839 } | |
| 840 return index; | |
| 841 } | |
| 842 /** | |
| 843 * Determines if Unicode RTF should be written. | |
| 844 * Don't write Unicode RTF on Windows 95/98/ME or NT. | |
| 845 */ | |
| 846 void setUnicode() { | |
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847 // const String Win95 = "windows 95"; |
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848 // const String Win98 = "windows 98"; |
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849 // const String WinME = "windows me"; |
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850 // const String WinNT = "windows nt"; |
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851 // String osName = System.getProperty("os.name").toLowerCase(); |
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852 // String osVersion = System.getProperty("os.version"); |
| 155 | 853 // int majorVersion = 0; |
| 854 // | |
| 855 // if (osName.startsWith(WinNT) && osVersion !is null) { | |
| 856 // int majorIndex = osVersion.indexOf('.'); | |
| 857 // if (majorIndex !is -1) { | |
| 858 // osVersion = osVersion.substring(0, majorIndex); | |
| 859 // try { | |
| 860 // majorVersion = Integer.parseInt(osVersion); | |
| 861 // } catch (NumberFormatException exception) { | |
| 862 // // ignore exception. version number remains unknown. | |
| 863 // // will write without Unicode | |
| 864 // } | |
| 865 // } | |
| 866 // } | |
| 867 // WriteUnicode = !osName.startsWith(Win95) && | |
| 868 // !osName.startsWith(Win98) && | |
| 869 // !osName.startsWith(WinME) && | |
| 870 // (!osName.startsWith(WinNT) || majorVersion > 4); | |
| 871 WriteUnicode = true; // we are on linux-gtk | |
| 872 } | |
| 873 /** | |
| 874 * Appends the specified segment of "string" to the RTF data. | |
| 875 * Copy from <code>start</code> up to, but excluding, <code>end</code>. | |
| 876 * | |
| 877 * @param string string to copy a segment from. Must not contain | |
| 878 * line breaks. Line breaks should be written using writeLineDelimiter() | |
| 879 * @param start start offset of segment. 0 based. | |
| 880 * @param end end offset of segment | |
| 881 */ | |
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882 void write(String string, int start, int end) { |
| 155 | 883 wchar[] wstring = tango.text.convert.Utf.toString16( string[ start .. end ] ); |
| 884 start = 0; | |
| 885 end = wstring.length; | |
| 886 for (int index = start; index < end; index++) { | |
| 887 wchar ch = wstring[index]; | |
| 888 if (ch > 0xFF && WriteUnicode) { | |
| 889 // write the sub string from the last escaped character | |
| 890 // to the current one. Fixes bug 21698. | |
| 891 if (index > start) { | |
| 892 write(tango.text.convert.Utf.toString(wstring[start .. index ])); | |
| 893 } | |
| 894 write("\\u"); | |
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895 write( to!(String)( cast(short)ch )); |
| 155 | 896 write(' '); // control word delimiter |
| 897 start = index + 1; | |
| 898 } else if (ch is '}' || ch is '{' || ch is '\\') { | |
| 899 // write the sub string from the last escaped character | |
| 900 // to the current one. Fixes bug 21698. | |
| 901 if (index > start) { | |
| 902 write(tango.text.convert.Utf.toString(wstring[start .. index])); | |
| 903 } | |
| 904 write('\\'); | |
| 905 write(cast(char)ch); // ok because one of {}\ | |
| 906 start = index + 1; | |
| 907 } | |
| 908 } | |
| 909 // write from the last escaped character to the end. | |
| 910 // Fixes bug 21698. | |
| 911 if (start < end) { | |
| 912 write(tango.text.convert.Utf.toString(wstring[ start .. end])); | |
| 913 } | |
| 914 } | |
| 915 /** | |
| 916 * Writes the RTF header including font table and color table. | |
| 917 */ | |
| 918 void writeHeader() { | |
| 919 StringBuffer header = new StringBuffer(); | |
| 920 FontData fontData = getFont().getFontData()[0]; | |
| 921 header.append("{\\rtf1\\ansi"); | |
| 922 // specify code page, necessary for copy to work in bidi | |
| 923 // systems that don't support Unicode RTF. | |
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924 // PORTING_TODO: String cpg = System.getProperty("file.encoding").toLowerCase(); |
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925 String cpg = "UTF16"; |
| 155 | 926 /+ |
| 927 if (cpg.startsWith("cp") || cpg.startsWith("ms")) { | |
| 928 cpg = cpg.substring(2, cpg.length()); | |
| 929 header.append("\\ansicpg"); | |
| 930 header.append(cpg); | |
| 931 } | |
| 932 +/ | |
| 933 header.append("\\uc0\\deff0{\\fonttbl{\\f0\\fnil "); | |
| 934 header.append(fontData.getName()); | |
| 935 header.append(";"); | |
| 936 for (int i = 1; i < fontTable.length; i++) { | |
| 937 header.append("\\f"); | |
| 938 header.append(i); | |
| 939 header.append(" "); | |
| 940 FontData fd = (cast(Font)fontTable[i]).getFontData()[0]; | |
| 941 header.append(fd.getName()); | |
| 942 header.append(";"); | |
| 943 } | |
| 944 header.append("}}\n{\\colortbl"); | |
| 945 for (int i = 0; i < colorTable.length; i++) { | |
| 946 Color color = cast(Color) colorTable[i]; | |
| 947 header.append("\\red"); | |
| 948 header.append(color.getRed()); | |
| 949 header.append("\\green"); | |
| 950 header.append(color.getGreen()); | |
| 951 header.append("\\blue"); | |
| 952 header.append(color.getBlue()); | |
| 953 header.append(";"); | |
| 954 } | |
| 955 // some RTF readers ignore the deff0 font tag. Explicitly | |
| 956 // set the font for the whole document to work around this. | |
| 957 header.append("}\n{\\f0\\fs"); | |
| 958 // font size is specified in half points | |
| 959 header.append(fontData.getHeight() * 2); | |
| 960 header.append(" "); | |
| 961 write(header.toString(), 0); | |
| 962 } | |
| 963 /** | |
| 964 * Appends the specified line text to the RTF data. Lines will be formatted | |
| 965 * using the styles queried from the LineStyleListener, if set, or those set | |
| 966 * directly in the widget. | |
| 967 * | |
| 968 * @param line line text to write as RTF. Must not contain line breaks | |
| 969 * Line breaks should be written using writeLineDelimiter() | |
| 970 * @param lineOffset offset of the line. 0 based from the start of the | |
| 971 * widget document. Any text occurring before the start offset or after the | |
| 972 * end offset specified during object creation is ignored. | |
| 973 * @exception DWTException <ul> | |
| 974 * <li>ERROR_IO when the writer is closed.</li> | |
| 975 * </ul> | |
| 976 */ | |
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977 public override void writeLine(String line, int lineOffset) { |
| 155 | 978 if (isClosed()) { |
| 979 DWT.error(DWT.ERROR_IO); | |
| 980 } | |
| 981 int lineIndex = content.getLineAtOffset(lineOffset); | |
| 982 int lineAlignment, lineIndent; | |
| 983 bool lineJustify; | |
| 984 int[] ranges; | |
| 985 StyleRange[] styles; | |
| 986 StyledTextEvent event = getLineStyleData(lineOffset, line); | |
| 987 if (event !is null) { | |
| 988 lineAlignment = event.alignment; | |
| 989 lineIndent = event.indent; | |
| 990 lineJustify = event.justify; | |
| 991 ranges = event.ranges; | |
| 992 styles = event.styles; | |
| 993 } else { | |
| 994 lineAlignment = renderer.getLineAlignment(lineIndex, alignment); | |
| 995 lineIndent = renderer.getLineIndent(lineIndex, indent); | |
| 996 lineJustify = renderer.getLineJustify(lineIndex, justify); | |
| 997 ranges = renderer.getRanges(lineOffset, line.length); | |
| 998 styles = renderer.getStyleRanges(lineOffset, line.length, false); | |
| 999 } | |
| 1000 if (styles is null) styles = new StyleRange[0]; | |
| 1001 Color lineBackground = renderer.getLineBackground(lineIndex, null); | |
| 1002 event = getLineBackgroundData(lineOffset, line); | |
| 1003 if (event !is null && event.lineBackground !is null) lineBackground = event.lineBackground; | |
| 1004 writeStyledLine(line, lineOffset, ranges, styles, lineBackground, lineIndent, lineAlignment, lineJustify); | |
| 1005 } | |
| 1006 /** | |
| 1007 * Appends the specified line delimiter to the RTF data. | |
| 1008 * | |
| 1009 * @param lineDelimiter line delimiter to write as RTF. | |
| 1010 * @exception DWTException <ul> | |
| 1011 * <li>ERROR_IO when the writer is closed.</li> | |
| 1012 * </ul> | |
| 1013 */ | |
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1014 public override void writeLineDelimiter(String lineDelimiter) { |
| 155 | 1015 if (isClosed()) { |
| 1016 DWT.error(DWT.ERROR_IO); | |
| 1017 } | |
| 1018 write(lineDelimiter, 0, lineDelimiter.length); | |
| 1019 write("\\par "); | |
| 1020 } | |
| 1021 /** | |
| 1022 * Appends the specified line text to the RTF data. | |
| 1023 * <p> | |
| 1024 * Use the colors and font styles specified in "styles" and "lineBackground". | |
| 1025 * Formatting is written to reflect the text rendering by the text widget. | |
| 1026 * Style background colors take precedence over the line background color. | |
| 1027 * Background colors are written using the \highlight tag (vs. the \cb tag). | |
| 1028 * </p> | |
| 1029 * | |
| 1030 * @param line line text to write as RTF. Must not contain line breaks | |
| 1031 * Line breaks should be written using writeLineDelimiter() | |
| 1032 * @param lineOffset offset of the line. 0 based from the start of the | |
| 1033 * widget document. Any text occurring before the start offset or after the | |
| 1034 * end offset specified during object creation is ignored. | |
| 1035 * @param styles styles to use for formatting. Must not be null. | |
| 1036 * @param lineBackground line background color to use for formatting. | |
| 1037 * May be null. | |
| 1038 */ | |
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1039 void writeStyledLine(String line, int lineOffset, int ranges[], StyleRange[] styles, Color lineBackground, int indent, int alignment, bool justify) { |
| 155 | 1040 int lineLength = line.length; |
| 1041 int startOffset = getStart(); | |
| 1042 int writeOffset = startOffset - lineOffset; | |
| 1043 if (writeOffset >= lineLength) return; | |
| 1044 int lineIndex = Math.max(0, writeOffset); | |
| 1045 | |
| 1046 write("\\fi"); | |
| 1047 write(indent); | |
| 1048 switch (alignment) { | |
| 1049 case DWT.LEFT: write("\\ql"); break; | |
| 1050 case DWT.CENTER: write("\\qc"); break; | |
| 1051 case DWT.RIGHT: write("\\qr"); break; | |
| 1052 default: | |
| 1053 } | |
| 1054 if (justify) write("\\qj"); | |
| 1055 write(" "); | |
| 1056 | |
| 1057 if (lineBackground !is null) { | |
| 1058 write("{\\highlight"); | |
| 1059 write(getColorIndex(lineBackground, DEFAULT_BACKGROUND)); | |
| 1060 write(" "); | |
| 1061 } | |
| 1062 int endOffset = startOffset + super.getCharCount(); | |
| 1063 int lineEndOffset = Math.min(lineLength, endOffset - lineOffset); | |
| 1064 for (int i = 0; i < styles.length; i++) { | |
| 1065 StyleRange style = styles[i]; | |
| 1066 int start, end; | |
| 1067 if (ranges !is null) { | |
| 1068 start = ranges[i << 1] - lineOffset; | |
| 1069 end = start + ranges[(i << 1) + 1]; | |
| 1070 } else { | |
| 1071 start = style.start - lineOffset; | |
| 1072 end = start + style.length; | |
| 1073 } | |
| 1074 // skip over partial first line | |
| 1075 if (end < writeOffset) { | |
| 1076 continue; | |
| 1077 } | |
| 1078 // style starts beyond line end or RTF write end | |
| 1079 if (start >= lineEndOffset) { | |
| 1080 break; | |
| 1081 } | |
| 1082 // write any unstyled text | |
| 1083 if (lineIndex < start) { | |
| 1084 // copy to start of style | |
| 1085 // style starting beyond end of write range or end of line | |
| 1086 // is guarded against above. | |
| 1087 write(line, lineIndex, start); | |
| 1088 lineIndex = start; | |
| 1089 } | |
| 1090 // write styled text | |
| 1091 write("{\\cf"); | |
| 1092 write(getColorIndex(style.foreground, DEFAULT_FOREGROUND)); | |
| 1093 int colorIndex = getColorIndex(style.background, DEFAULT_BACKGROUND); | |
| 1094 if (colorIndex !is DEFAULT_BACKGROUND) { | |
| 1095 write("\\highlight"); | |
| 1096 write(colorIndex); | |
| 1097 } | |
| 1098 Font font = style.font; | |
| 1099 if (font !is null) { | |
| 1100 int fontIndex = getFontIndex(font); | |
| 1101 write("\\f"); | |
| 1102 write(fontIndex); | |
| 1103 FontData fontData = font.getFontData()[0]; | |
| 1104 write("\\fs"); | |
| 1105 write(fontData.getHeight() * 2); | |
| 1106 } else { | |
| 1107 if ((style.fontStyle & DWT.BOLD) !is 0) { | |
| 1108 write("\\b"); | |
| 1109 } | |
| 1110 if ((style.fontStyle & DWT.ITALIC) !is 0) { | |
| 1111 write("\\i"); | |
| 1112 } | |
| 1113 } | |
| 1114 if (style.underline) { | |
| 1115 write("\\ul"); | |
| 1116 } | |
| 1117 if (style.strikeout) { | |
| 1118 write("\\strike"); | |
| 1119 } | |
| 1120 write(" "); | |
| 1121 // copy to end of style or end of write range or end of line | |
| 1122 int copyEnd = Math.min(end, lineEndOffset); | |
| 1123 // guard against invalid styles and let style processing continue | |
| 1124 copyEnd = Math.max(copyEnd, lineIndex); | |
| 1125 write(line, lineIndex, copyEnd); | |
| 1126 if (font is null) { | |
| 1127 if ((style.fontStyle & DWT.BOLD) !is 0) { | |
| 1128 write("\\b0"); | |
| 1129 } | |
| 1130 if ((style.fontStyle & DWT.ITALIC) !is 0) { | |
| 1131 write("\\i0"); | |
| 1132 } | |
| 1133 } | |
| 1134 if (style.underline) { | |
| 1135 write("\\ul0"); | |
| 1136 } | |
| 1137 if (style.strikeout) { | |
| 1138 write("\\strike0"); | |
| 1139 } | |
| 1140 write("}"); | |
| 1141 lineIndex = copyEnd; | |
| 1142 } | |
| 1143 // write unstyled text at the end of the line | |
| 1144 if (lineIndex < lineEndOffset) { | |
| 1145 write(line, lineIndex, lineEndOffset); | |
| 1146 } | |
| 1147 if (lineBackground !is null) write("}"); | |
| 1148 } | |
| 1149 } | |
| 1150 /** | |
| 1151 * The <code>TextWriter</code> class is used to write widget content to | |
| 1152 * a string. Whole and partial lines and line breaks can be written. To write | |
| 1153 * partial lines, specify the start and length of the desired segment | |
| 1154 * during object creation. | |
| 1155 * <p> | |
| 1156 * </b>NOTE:</b> <code>toString()</code> is guaranteed to return a valid string only after close() | |
| 1157 * has been called. | |
| 1158 * </p> | |
| 1159 */ | |
| 1160 class TextWriter { | |
| 1161 private StringBuffer buffer; | |
| 1162 private int startOffset; // offset of first character that will be written | |
| 1163 private int endOffset; // offset of last character that will be written. | |
| 1164 // 0 based from the beginning of the widget text. | |
| 1165 private bool isClosed_ = false; | |
| 1166 | |
| 1167 /** | |
| 1168 * Creates a writer that writes content starting at offset "start" | |
| 1169 * in the document. <code>start</code> and <code>length</code> can be set to specify partial lines. | |
| 1170 * | |
| 1171 * @param start start offset of content to write, 0 based from beginning of document | |
| 1172 * @param length length of content to write | |
| 1173 */ | |
| 1174 public this(int start, int length) { | |
| 1175 buffer = new StringBuffer(length); | |
| 1176 startOffset = start; | |
| 1177 endOffset = start + length; | |
| 1178 } | |
| 1179 /** | |
| 1180 * Closes the writer. Once closed no more content can be written. | |
| 1181 * <b>NOTE:</b> <code>toString()</code> is not guaranteed to return a valid string unless | |
| 1182 * the writer is closed. | |
| 1183 */ | |
| 1184 public void close() { | |
| 1185 if (!isClosed_) { | |
| 1186 isClosed_ = true; | |
| 1187 } | |
| 1188 } | |
| 1189 /** | |
| 1190 * Returns the number of characters to write. | |
| 1191 * @return the integer number of characters to write | |
| 1192 */ | |
| 1193 public int getCharCount() { | |
| 1194 return endOffset - startOffset; | |
| 1195 } | |
| 1196 /** | |
| 1197 * Returns the offset where writing starts. 0 based from the start of | |
| 1198 * the widget text. Used to write partial lines. | |
| 1199 * @return the integer offset where writing starts | |
| 1200 */ | |
| 1201 public int getStart() { | |
| 1202 return startOffset; | |
| 1203 } | |
| 1204 /** | |
| 1205 * Returns whether the writer is closed. | |
| 1206 * @return a bool specifying whether or not the writer is closed | |
| 1207 */ | |
| 1208 public bool isClosed() { | |
| 1209 return isClosed_; | |
| 1210 } | |
| 1211 /** | |
| 1212 * Returns the string. <code>close()</code> must be called before <code>toString()</code> | |
| 1213 * is guaranteed to return a valid string. | |
| 1214 * | |
| 1215 * @return the string | |
| 1216 */ | |
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1217 public override String toString() { |
| 155 | 1218 return buffer.toString(); |
| 1219 } | |
| 1220 /** | |
| 1221 * Appends the given string to the data. | |
| 1222 */ | |
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1223 void write(String string) { |
| 155 | 1224 buffer.append(string); |
| 1225 } | |
| 1226 /** | |
| 1227 * Inserts the given string to the data at the specified offset. | |
| 1228 * <p> | |
| 1229 * Do nothing if "offset" is < 0 or > getCharCount() | |
| 1230 * </p> | |
| 1231 * | |
| 1232 * @param string text to insert | |
| 1233 * @param offset offset in the existing data to insert "string" at. | |
| 1234 */ | |
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1235 void write(String string, int offset) { |
| 155 | 1236 if (offset < 0 || offset > buffer.length()) { |
| 1237 return; | |
| 1238 } | |
| 1239 buffer.select( offset ); | |
| 1240 buffer.prepend( string ); | |
| 1241 } | |
| 1242 /** | |
| 1243 * Appends the given int to the data. | |
| 1244 */ | |
| 1245 void write(int i) { | |
| 1246 buffer.append(i); | |
| 1247 } | |
| 1248 /** | |
| 1249 * Appends the given character to the data. | |
| 1250 */ | |
| 1251 void write(char i) { | |
| 1252 buffer.append(i); | |
| 1253 } | |
| 1254 /** | |
| 1255 * Appends the specified line text to the data. | |
| 1256 * | |
| 1257 * @param line line text to write. Must not contain line breaks | |
| 1258 * Line breaks should be written using writeLineDelimiter() | |
| 1259 * @param lineOffset offset of the line. 0 based from the start of the | |
| 1260 * widget document. Any text occurring before the start offset or after the | |
| 1261 * end offset specified during object creation is ignored. | |
| 1262 * @exception DWTException <ul> | |
| 1263 * <li>ERROR_IO when the writer is closed.</li> | |
| 1264 * </ul> | |
| 1265 */ | |
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1266 public void writeLine(String line, int lineOffset) { |
| 155 | 1267 if (isClosed_) { |
| 1268 DWT.error(DWT.ERROR_IO); | |
| 1269 } | |
| 1270 int writeOffset = startOffset - lineOffset; | |
| 1271 int lineLength = line.length; | |
| 1272 int lineIndex; | |
| 1273 if (writeOffset >= lineLength) { | |
| 1274 return; // whole line is outside write range | |
| 1275 } else if (writeOffset > 0) { | |
| 1276 lineIndex = writeOffset; // line starts before write start | |
| 1277 } else { | |
| 1278 lineIndex = 0; | |
| 1279 } | |
| 1280 int copyEnd = Math.min(lineLength, endOffset - lineOffset); | |
| 1281 if (lineIndex < copyEnd) { | |
| 1282 write(line[lineIndex .. copyEnd]); | |
| 1283 } | |
| 1284 } | |
| 1285 /** | |
| 1286 * Appends the specified line delimiter to the data. | |
| 1287 * | |
| 1288 * @param lineDelimiter line delimiter to write | |
| 1289 * @exception DWTException <ul> | |
| 1290 * <li>ERROR_IO when the writer is closed.</li> | |
| 1291 * </ul> | |
| 1292 */ | |
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1293 public void writeLineDelimiter(String lineDelimiter) { |
| 155 | 1294 if (isClosed_) { |
| 1295 DWT.error(DWT.ERROR_IO); | |
| 1296 } | |
| 1297 write(lineDelimiter); | |
| 1298 } | |
| 1299 } | |
| 1300 | |
| 1301 /** | |
| 1302 * Constructs a new instance of this class given its parent | |
| 1303 * and a style value describing its behavior and appearance. | |
| 1304 * <p> | |
| 1305 * The style value is either one of the style constants defined in | |
| 1306 * class <code>DWT</code> which is applicable to instances of this | |
| 1307 * class, or must be built by <em>bitwise OR</em>'ing together | |
| 1308 * (that is, using the <code>int</code> "|" operator) two or more | |
| 1309 * of those <code>DWT</code> style constants. The class description | |
| 1310 * lists the style constants that are applicable to the class. | |
| 1311 * Style bits are also inherited from superclasses. | |
| 1312 * </p> | |
| 1313 * | |
| 1314 * @param parent a widget which will be the parent of the new instance (cannot be null) | |
| 1315 * @param style the style of widget to construct | |
| 1316 * | |
| 1317 * @exception IllegalArgumentException <ul> | |
| 1318 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> | |
| 1319 * </ul> | |
| 1320 * @exception DWTException <ul> | |
| 1321 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> | |
| 1322 * </ul> | |
| 1323 * | |
| 1324 * @see DWT#FULL_SELECTION | |
| 1325 * @see DWT#MULTI | |
| 1326 * @see DWT#READ_ONLY | |
| 1327 * @see DWT#SINGLE | |
| 1328 * @see DWT#WRAP | |
| 1329 * @see #getStyle | |
| 1330 */ | |
| 1331 public this(Composite parent, int style) { | |
| 1332 selection = new Point(0, 0); | |
| 1333 super(parent, checkStyle(style)); | |
| 1334 // set the fg in the OS to ensure that these are the same as StyledText, necessary | |
| 1335 // for ensuring that the bg/fg the IME box uses is the same as what StyledText uses | |
| 1336 super.setForeground(getForeground()); | |
| 1337 super.setDragDetect(false); | |
| 1338 Display display = getDisplay(); | |
| 1339 isMirrored_ = (super.getStyle() & DWT.MIRRORED) !is 0; | |
| 1340 fixedLineHeight = true; | |
| 1341 if ((style & DWT.READ_ONLY) !is 0) { | |
| 1342 setEditable(false); | |
| 1343 } | |
| 1344 leftMargin = rightMargin = isBidiCaret() ? BIDI_CARET_WIDTH - 1: 0; | |
| 1345 if ((style & DWT.SINGLE) !is 0 && (style & DWT.BORDER) !is 0) { | |
| 1346 leftMargin = topMargin = rightMargin = bottomMargin = 2; | |
| 1347 } | |
| 1348 alignment = style & (DWT.LEFT | DWT.RIGHT | DWT.CENTER); | |
| 1349 if (alignment is 0) alignment = DWT.LEFT; | |
| 1350 clipboard = new Clipboard(display); | |
| 1351 installDefaultContent(); | |
| 1352 renderer = new StyledTextRenderer(getDisplay(), this); | |
| 1353 renderer.setContent(content); | |
| 1354 renderer.setFont(getFont(), tabLength); | |
| 213 | 1355 ime = new IME(this, DWT.NONE); |
| 1356 defaultCaret = new Caret(this, DWT.NONE); | |
| 155 | 1357 if ((style & DWT.WRAP) !is 0) { |
| 1358 setWordWrap(true); | |
| 1359 } | |
| 1360 if (isBidiCaret()) { | |
| 1361 createCaretBitmaps(); | |
| 1362 Runnable runnable = new class() Runnable { | |
| 1363 public void run() { | |
| 1364 int direction = BidiUtil.getKeyboardLanguage() is BidiUtil.KEYBOARD_BIDI ? DWT.RIGHT : DWT.LEFT; | |
| 1365 if (direction is caretDirection) return; | |
| 1366 if (getCaret() !is defaultCaret) return; | |
| 1367 Point newCaretPos = getPointAtOffset(caretOffset); | |
| 1368 setCaretLocation(newCaretPos, direction); | |
| 1369 } | |
| 1370 }; | |
| 213 | 1371 BidiUtil.addLanguageListener(this, runnable); |
| 155 | 1372 } |
| 1373 setCaret(defaultCaret); | |
| 1374 calculateScrollBars(); | |
| 1375 createKeyBindings(); | |
| 1376 setCursor(display.getSystemCursor(DWT.CURSOR_IBEAM)); | |
| 1377 installListeners(); | |
| 1378 initializeAccessible(); | |
| 1379 setData("DEFAULT_DROP_TARGET_EFFECT", new StyledTextDropTargetEffect(this)); | |
| 1380 } | |
| 1381 /** | |
| 1382 * Adds an extended modify listener. An ExtendedModify event is sent by the | |
| 1383 * widget when the widget text has changed. | |
| 1384 * | |
| 1385 * @param extendedModifyListener the listener | |
| 1386 * @exception DWTException <ul> | |
| 1387 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1388 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1389 * </ul> | |
| 1390 * @exception IllegalArgumentException <ul> | |
| 1391 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1392 * </ul> | |
| 1393 */ | |
| 1394 public void addExtendedModifyListener(ExtendedModifyListener extendedModifyListener) { | |
| 1395 checkWidget(); | |
| 1396 if (extendedModifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1397 StyledTextListener typedListener = new StyledTextListener(extendedModifyListener); | |
| 1398 addListener(ExtendedModify, typedListener); | |
| 1399 } | |
| 1400 /** | |
| 1401 * Adds a bidirectional segment listener. | |
| 1402 * <p> | |
| 1403 * A BidiSegmentEvent is sent | |
| 1404 * whenever a line of text is measured or rendered. The user can | |
| 1405 * specify text ranges in the line that should be treated as if they | |
| 1406 * had a different direction than the surrounding text. | |
| 1407 * This may be used when adjacent segments of right-to-left text should | |
| 1408 * not be reordered relative to each other. | |
| 1409 * E.g., Multiple Java string literals in a right-to-left language | |
| 1410 * should generally remain in logical order to each other, that is, the | |
| 1411 * way they are stored. | |
| 1412 * </p> | |
| 1413 * | |
| 1414 * @param listener the listener | |
| 1415 * @exception DWTException <ul> | |
| 1416 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1417 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1418 * </ul> | |
| 1419 * @exception IllegalArgumentException <ul> | |
| 1420 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1421 * </ul> | |
| 1422 * @see BidiSegmentEvent | |
| 1423 * @since 2.0 | |
| 1424 */ | |
| 1425 public void addBidiSegmentListener(BidiSegmentListener listener) { | |
| 1426 checkWidget(); | |
| 1427 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1428 addListener(LineGetSegments, new StyledTextListener(listener)); | |
| 1429 } | |
| 1430 /** | |
| 1431 * Adds a line background listener. A LineGetBackground event is sent by the | |
| 1432 * widget to determine the background color for a line. | |
| 1433 * | |
| 1434 * @param listener the listener | |
| 1435 * @exception DWTException <ul> | |
| 1436 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1437 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1438 * </ul> | |
| 1439 * @exception IllegalArgumentException <ul> | |
| 1440 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1441 * </ul> | |
| 1442 */ | |
| 1443 public void addLineBackgroundListener(LineBackgroundListener listener) { | |
| 1444 checkWidget(); | |
| 1445 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1446 if (!isListening(LineGetBackground)) { | |
| 1447 renderer.clearLineBackground(0, content.getLineCount()); | |
| 1448 } | |
| 1449 addListener(LineGetBackground, new StyledTextListener(listener)); | |
| 1450 } | |
| 1451 /** | |
| 1452 * Adds a line style listener. A LineGetStyle event is sent by the widget to | |
| 1453 * determine the styles for a line. | |
| 1454 * | |
| 1455 * @param listener the listener | |
| 1456 * @exception DWTException <ul> | |
| 1457 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1458 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1459 * </ul> | |
| 1460 * @exception IllegalArgumentException <ul> | |
| 1461 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1462 * </ul> | |
| 1463 */ | |
| 1464 public void addLineStyleListener(LineStyleListener listener) { | |
| 1465 checkWidget(); | |
| 1466 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1467 if (!isListening(LineGetStyle)) { | |
| 1468 setStyleRanges(0, 0, null, null, true); | |
| 1469 renderer.clearLineStyle(0, content.getLineCount()); | |
| 1470 } | |
| 1471 addListener(LineGetStyle, new StyledTextListener(listener)); | |
| 1472 } | |
| 1473 /** | |
| 1474 * Adds a modify listener. A Modify event is sent by the widget when the widget text | |
| 1475 * has changed. | |
| 1476 * | |
| 1477 * @param modifyListener the listener | |
| 1478 * @exception DWTException <ul> | |
| 1479 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1480 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1481 * </ul> | |
| 1482 * @exception IllegalArgumentException <ul> | |
| 1483 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1484 * </ul> | |
| 1485 */ | |
| 1486 public void addModifyListener(ModifyListener modifyListener) { | |
| 1487 checkWidget(); | |
| 1488 if (modifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1489 addListener(DWT.Modify, new TypedListener(modifyListener)); | |
| 1490 } | |
| 1491 /** | |
| 1492 * Adds a paint object listener. A paint object event is sent by the widget when an object | |
| 1493 * needs to be drawn. | |
| 1494 * | |
| 1495 * @param listener the listener | |
| 1496 * @exception DWTException <ul> | |
| 1497 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1498 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1499 * </ul> | |
| 1500 * @exception IllegalArgumentException <ul> | |
| 1501 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1502 * </ul> | |
| 1503 * | |
| 1504 * @since 3.2 | |
| 1505 * | |
| 1506 * @see PaintObjectListener | |
| 1507 * @see PaintObjectEvent | |
| 1508 */ | |
| 1509 public void addPaintObjectListener(PaintObjectListener listener) { | |
| 1510 checkWidget(); | |
| 1511 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1512 addListener(PaintObject, new StyledTextListener(listener)); | |
| 1513 } | |
| 1514 /** | |
| 1515 * Adds a selection listener. A Selection event is sent by the widget when the | |
| 1516 * user changes the selection. | |
| 1517 * <p> | |
| 1518 * When <code>widgetSelected</code> is called, the event x and y fields contain | |
| 1519 * the start and end caret indices of the selection. | |
| 1520 * <code>widgetDefaultSelected</code> is not called for StyledTexts. | |
| 1521 * </p> | |
| 1522 * | |
| 1523 * @param listener the listener which should be notified when the user changes the receiver's selection | |
| 1524 | |
| 1525 * @exception IllegalArgumentException <ul> | |
| 1526 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 1527 * </ul> | |
| 1528 * @exception DWTException <ul> | |
| 1529 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1530 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1531 * </ul> | |
| 1532 * | |
| 1533 * @see SelectionListener | |
| 1534 * @see #removeSelectionListener | |
| 1535 * @see SelectionEvent | |
| 1536 */ | |
| 1537 public void addSelectionListener(SelectionListener listener) { | |
| 1538 checkWidget(); | |
| 1539 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1540 addListener(DWT.Selection, new TypedListener(listener)); | |
| 1541 } | |
| 1542 /** | |
| 1543 * Adds a verify key listener. A VerifyKey event is sent by the widget when a key | |
| 1544 * is pressed. The widget ignores the key press if the listener sets the doit field | |
| 1545 * of the event to false. | |
| 1546 * | |
| 1547 * @param listener the listener | |
| 1548 * @exception DWTException <ul> | |
| 1549 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1550 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1551 * </ul> | |
| 1552 * @exception IllegalArgumentException <ul> | |
| 1553 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1554 * </ul> | |
| 1555 */ | |
| 1556 public void addVerifyKeyListener(VerifyKeyListener listener) { | |
| 1557 checkWidget(); | |
| 1558 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1559 addListener(VerifyKey, new StyledTextListener(listener)); | |
| 1560 } | |
| 1561 /** | |
| 1562 * Adds a verify listener. A Verify event is sent by the widget when the widget text | |
| 1563 * is about to change. The listener can set the event text and the doit field to | |
| 1564 * change the text that is set in the widget or to force the widget to ignore the | |
| 1565 * text change. | |
| 1566 * | |
| 1567 * @param verifyListener the listener | |
| 1568 * @exception DWTException <ul> | |
| 1569 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1570 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1571 * </ul> | |
| 1572 * @exception IllegalArgumentException <ul> | |
| 1573 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1574 * </ul> | |
| 1575 */ | |
| 1576 public void addVerifyListener(VerifyListener verifyListener) { | |
| 1577 checkWidget(); | |
| 1578 if (verifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1579 addListener(DWT.Verify, new TypedListener(verifyListener)); | |
| 1580 } | |
| 1581 /** | |
| 1582 * Adds a word movement listener. A movement event is sent when the boundary | |
| 1583 * of a word is needed. For example, this occurs during word next and word | |
| 1584 * previous actions. | |
| 1585 * | |
| 1586 * @param movementListener the listener | |
| 1587 * @exception DWTException <ul> | |
| 1588 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1589 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1590 * </ul> | |
| 1591 * @exception IllegalArgumentException <ul> | |
| 1592 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1593 * </ul> | |
| 1594 * | |
| 1595 * @see MovementEvent | |
| 1596 * @see MovementListener | |
| 1597 * @see #removeWordMovementListener | |
| 1598 * | |
| 1599 * @since 3.3 | |
| 1600 */ | |
| 1601 public void addWordMovementListener(MovementListener movementListener) { | |
| 1602 checkWidget(); | |
| 1603 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1604 addListener(WordNext, new StyledTextListener(movementListener)); | |
| 1605 addListener(WordPrevious, new StyledTextListener(movementListener)); | |
| 1606 } | |
| 1607 /** | |
| 1608 * Appends a string to the text at the end of the widget. | |
| 1609 * | |
| 1610 * @param string the string to be appended | |
|
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1611 * @see #replaceTextRange(int,int,String) |
| 155 | 1612 * @exception DWTException <ul> |
| 1613 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1614 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1615 * </ul> | |
| 1616 * @exception IllegalArgumentException <ul> | |
| 1617 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1618 * </ul> | |
| 1619 */ | |
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1620 public void append(String string) { |
| 155 | 1621 checkWidget(); |
|
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1622 // DWT extension: allow null string |
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1623 //if (string is null) { |
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1624 // DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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1625 //} |
| 155 | 1626 int lastChar = Math.max(getCharCount(), 0); |
| 1627 replaceTextRange(lastChar, 0, string); | |
| 1628 } | |
| 1629 /** | |
| 1630 * Calculates the scroll bars | |
| 1631 */ | |
| 1632 void calculateScrollBars() { | |
| 1633 ScrollBar horizontalBar = getHorizontalBar(); | |
| 1634 ScrollBar verticalBar = getVerticalBar(); | |
| 1635 setScrollBars(true); | |
| 1636 if (verticalBar !is null) { | |
| 1637 verticalBar.setIncrement(getVerticalIncrement()); | |
| 1638 } | |
| 1639 if (horizontalBar !is null) { | |
| 1640 horizontalBar.setIncrement(getHorizontalIncrement()); | |
| 1641 } | |
| 1642 } | |
| 1643 /** | |
| 1644 * Calculates the top index based on the current vertical scroll offset. | |
| 1645 * The top index is the index of the topmost fully visible line or the | |
| 1646 * topmost partially visible line if no line is fully visible. | |
| 1647 * The top index starts at 0. | |
| 1648 */ | |
| 1649 void calculateTopIndex(int delta) { | |
| 1650 int oldTopIndex = topIndex; | |
| 1651 int oldTopIndexY = topIndexY; | |
| 1652 if (isFixedLineHeight()) { | |
| 1653 int verticalIncrement = getVerticalIncrement(); | |
| 1654 if (verticalIncrement is 0) { | |
| 1655 return; | |
| 1656 } | |
| 1657 topIndex = Compatibility.ceil(getVerticalScrollOffset(), verticalIncrement); | |
| 1658 // Set top index to partially visible top line if no line is fully | |
| 1659 // visible but at least some of the widget client area is visible. | |
| 1660 // Fixes bug 15088. | |
| 1661 if (topIndex > 0) { | |
| 1662 if (clientAreaHeight > 0) { | |
| 1663 int bottomPixel = getVerticalScrollOffset() + clientAreaHeight; | |
| 1664 int fullLineTopPixel = topIndex * verticalIncrement; | |
| 1665 int fullLineVisibleHeight = bottomPixel - fullLineTopPixel; | |
| 1666 // set top index to partially visible line if no line fully fits in | |
| 1667 // client area or if space is available but not used (the latter should | |
| 1668 // never happen because we use claimBottomFreeSpace) | |
| 1669 if (fullLineVisibleHeight < verticalIncrement) { | |
| 1670 topIndex--; | |
| 1671 } | |
| 1672 } else if (topIndex >= content.getLineCount()) { | |
| 1673 topIndex = content.getLineCount() - 1; | |
| 1674 } | |
| 1675 } | |
| 1676 } else { | |
| 1677 if (delta >= 0) { | |
| 1678 delta -= topIndexY; | |
| 1679 int lineIndex = topIndex; | |
| 1680 int lineCount = content.getLineCount(); | |
| 1681 while (lineIndex < lineCount) { | |
| 1682 if (delta <= 0) break; | |
| 1683 delta -= renderer.getLineHeight(lineIndex++); | |
| 1684 } | |
| 1685 if (lineIndex < lineCount && -delta + renderer.getLineHeight(lineIndex) <= clientAreaHeight - topMargin - bottomMargin) { | |
| 1686 topIndex = lineIndex; | |
| 1687 topIndexY = -delta; | |
| 1688 } else { | |
| 1689 topIndex = lineIndex - 1; | |
| 1690 topIndexY = -renderer.getLineHeight(topIndex) - delta; | |
| 1691 } | |
| 1692 } else { | |
| 1693 delta -= topIndexY; | |
| 1694 int lineIndex = topIndex; | |
| 1695 while (lineIndex > 0) { | |
| 1696 int lineHeight = renderer.getLineHeight(lineIndex - 1); | |
| 1697 if (delta + lineHeight > 0) break; | |
| 1698 delta += lineHeight; | |
| 1699 lineIndex--; | |
| 1700 } | |
| 1701 if (lineIndex is 0 || -delta + renderer.getLineHeight(lineIndex) <= clientAreaHeight - topMargin - bottomMargin) { | |
| 1702 topIndex = lineIndex; | |
| 1703 topIndexY = - delta; | |
| 1704 } else { | |
| 1705 topIndex = lineIndex - 1; | |
| 1706 topIndexY = - renderer.getLineHeight(topIndex) - delta; | |
| 1707 } | |
| 1708 } | |
| 1709 } | |
| 1710 if (topIndex !is oldTopIndex || oldTopIndexY !is topIndexY) { | |
| 1711 renderer.calculateClientArea(); | |
| 1712 setScrollBars(false); | |
| 1713 } | |
| 1714 } | |
| 1715 /** | |
| 1716 * Hides the scroll bars if widget is created in single line mode. | |
| 1717 */ | |
| 1718 static int checkStyle(int style) { | |
| 1719 if ((style & DWT.SINGLE) !is 0) { | |
| 1720 style &= ~(DWT.H_SCROLL | DWT.V_SCROLL | DWT.WRAP | DWT.MULTI); | |
| 1721 } else { | |
| 1722 style |= DWT.MULTI; | |
| 1723 if ((style & DWT.WRAP) !is 0) { | |
| 1724 style &= ~DWT.H_SCROLL; | |
| 1725 } | |
| 1726 } | |
| 1727 style |= DWT.NO_REDRAW_RESIZE | DWT.DOUBLE_BUFFERED | DWT.NO_BACKGROUND; | |
| 1728 return style; | |
| 1729 } | |
| 1730 /** | |
| 1731 * Scrolls down the text to use new space made available by a resize or by | |
| 1732 * deleted lines. | |
| 1733 */ | |
| 1734 void claimBottomFreeSpace() { | |
| 1735 int clientAreaHeight = this.clientAreaHeight - topMargin - bottomMargin; | |
| 1736 if (isFixedLineHeight()) { | |
| 1737 int lineHeight = renderer.getLineHeight(); | |
| 1738 int newVerticalOffset = Math.max(0, content.getLineCount() * lineHeight - clientAreaHeight); | |
| 1739 if (newVerticalOffset < getVerticalScrollOffset()) { | |
| 1740 scrollVertical(newVerticalOffset - getVerticalScrollOffset(), true); | |
| 1741 } | |
| 1742 } else { | |
| 1743 int bottomIndex = getPartialBottomIndex(); | |
| 1744 int height = getLinePixel(bottomIndex + 1); | |
| 1745 if (clientAreaHeight > height) { | |
| 1746 scrollVertical(-getAvailableHeightAbove(clientAreaHeight - height), true); | |
| 1747 } | |
| 1748 } | |
| 1749 } | |
| 1750 /** | |
| 1751 * Scrolls text to the right to use new space made available by a resize. | |
| 1752 */ | |
| 1753 void claimRightFreeSpace() { | |
| 1754 int newHorizontalOffset = Math.max(0, renderer.getWidth() - (clientAreaWidth - leftMargin - rightMargin)); | |
| 1755 if (newHorizontalOffset < horizontalScrollOffset) { | |
| 1756 // item is no longer drawn past the right border of the client area | |
| 1757 // align the right end of the item with the right border of the | |
| 1758 // client area (window is scrolled right). | |
| 1759 scrollHorizontal(newHorizontalOffset - horizontalScrollOffset, true); | |
| 1760 } | |
| 1761 } | |
| 1762 /** | |
| 1763 * Removes the widget selection. | |
| 1764 * | |
| 1765 * @param sendEvent a Selection event is sent when set to true and when the selection is actually reset. | |
| 1766 */ | |
| 1767 void clearSelection(bool sendEvent) { | |
| 1768 int selectionStart = selection.x; | |
| 1769 int selectionEnd = selection.y; | |
| 1770 resetSelection(); | |
| 1771 // redraw old selection, if any | |
| 1772 if (selectionEnd - selectionStart > 0) { | |
| 1773 int length = content.getCharCount(); | |
| 1774 // called internally to remove selection after text is removed | |
| 1775 // therefore make sure redraw range is valid. | |
| 1776 int redrawStart = Math.min(selectionStart, length); | |
| 1777 int redrawEnd = Math.min(selectionEnd, length); | |
| 1778 if (redrawEnd - redrawStart > 0) { | |
| 1779 internalRedrawRange(redrawStart, redrawEnd - redrawStart); | |
| 1780 } | |
| 1781 if (sendEvent) { | |
| 1782 sendSelectionEvent(); | |
| 1783 } | |
| 1784 } | |
| 1785 } | |
| 1786 public override Point computeSize (int wHint, int hHint, bool changed) { | |
| 1787 checkWidget(); | |
| 1788 int lineCount = (getStyle() & DWT.SINGLE) !is 0 ? 1 : content.getLineCount(); | |
| 1789 int width = 0; | |
| 1790 int height = 0; | |
| 1791 if (wHint is DWT.DEFAULT || hHint is DWT.DEFAULT) { | |
| 1792 Display display = getDisplay(); | |
| 1793 int maxHeight = display.getClientArea().height; | |
| 1794 for (int lineIndex = 0; lineIndex < lineCount; lineIndex++) { | |
| 1795 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 213 | 1796 int wrapWidth = layout.getWidth(); |
| 155 | 1797 if (wordWrap) layout.setWidth(wHint is 0 ? 1 : wHint); |
| 1798 Rectangle rect = layout.getBounds(); | |
| 1799 height += rect.height; | |
| 1800 width = Math.max(width, rect.width); | |
| 213 | 1801 layout.setWidth(wrapWidth); |
| 155 | 1802 renderer.disposeTextLayout(layout); |
| 1803 if (isFixedLineHeight() && height > maxHeight) break; | |
| 1804 } | |
| 1805 if (isFixedLineHeight()) { | |
| 1806 height = lineCount * renderer.getLineHeight(); | |
| 1807 } | |
| 1808 } | |
| 1809 // Use default values if no text is defined. | |
| 1810 if (width is 0) width = DEFAULT_WIDTH; | |
| 1811 if (height is 0) height = DEFAULT_HEIGHT; | |
| 1812 if (wHint !is DWT.DEFAULT) width = wHint; | |
| 1813 if (hHint !is DWT.DEFAULT) height = hHint; | |
| 1814 int wTrim = leftMargin + rightMargin + getCaretWidth(); | |
| 1815 int hTrim = topMargin + bottomMargin; | |
| 1816 Rectangle rect = computeTrim(0, 0, width + wTrim, height + hTrim); | |
| 1817 return new Point (rect.width, rect.height); | |
| 1818 } | |
| 1819 /** | |
| 1820 * Copies the selected text to the <code>DND.CLIPBOARD</code> clipboard. | |
| 1821 * <p> | |
| 1822 * The text will be put on the clipboard in plain text format and RTF format. | |
| 1823 * The <code>DND.CLIPBOARD</code> clipboard is used for data that is | |
| 1824 * transferred by keyboard accelerator (such as Ctrl+C/Ctrl+V) or | |
| 1825 * by menu action. | |
| 1826 * </p> | |
| 1827 * | |
| 1828 * @exception DWTException <ul> | |
| 1829 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1830 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1831 * </ul> | |
| 1832 */ | |
| 1833 public void copy() { | |
| 1834 checkWidget(); | |
| 1835 copy(DND.CLIPBOARD); | |
| 1836 } | |
| 1837 /** | |
| 1838 * Copies the selected text to the specified clipboard. The text will be put in the | |
| 1839 * clipboard in plain text format and RTF format. | |
| 1840 * <p> | |
| 1841 * The clipboardType is one of the clipboard constants defined in class | |
| 1842 * <code>DND</code>. The <code>DND.CLIPBOARD</code> clipboard is | |
| 1843 * used for data that is transferred by keyboard accelerator (such as Ctrl+C/Ctrl+V) | |
| 1844 * or by menu action. The <code>DND.SELECTION_CLIPBOARD</code> | |
| 1845 * clipboard is used for data that is transferred by selecting text and pasting | |
| 1846 * with the middle mouse button. | |
| 1847 * </p> | |
| 1848 * | |
| 1849 * @param clipboardType indicates the type of clipboard | |
| 1850 * | |
| 1851 * @exception DWTException <ul> | |
| 1852 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1853 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1854 * </ul> | |
| 1855 * | |
| 1856 * @since 3.1 | |
| 1857 */ | |
| 1858 public void copy(int clipboardType) { | |
| 1859 checkWidget(); | |
| 1860 if (clipboardType !is DND.CLIPBOARD && clipboardType !is DND.SELECTION_CLIPBOARD) return; | |
| 1861 int length = selection.y - selection.x; | |
| 1862 if (length > 0) { | |
| 1863 try { | |
| 1864 setClipboardContent(selection.x, length, clipboardType); | |
| 1865 } catch (DWTError error) { | |
| 1866 // Copy to clipboard failed. This happens when another application | |
| 1867 // is accessing the clipboard while we copy. Ignore the error. | |
| 1868 // Fixes 1GDQAVN | |
| 1869 // Rethrow all other errors. Fixes bug 17578. | |
| 1870 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 1871 throw error; | |
| 1872 } | |
| 1873 } | |
| 1874 } | |
| 1875 } | |
| 1876 /** | |
| 1877 * Returns the alignment of the widget. | |
| 1878 * | |
| 1879 * @return the alignment | |
| 1880 * | |
| 1881 * @exception DWTException <ul> | |
| 1882 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1883 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1884 * </ul> | |
| 1885 * | |
| 1886 * @see #getLineAlignment(int) | |
| 1887 * | |
| 1888 * @since 3.2 | |
| 1889 */ | |
| 1890 public int getAlignment() { | |
| 1891 checkWidget(); | |
| 1892 return alignment; | |
| 1893 } | |
| 1894 int getAvailableHeightAbove(int height) { | |
| 1895 int maxHeight = verticalScrollOffset; | |
| 1896 if (maxHeight is -1) { | |
| 1897 int lineIndex = topIndex - 1; | |
| 1898 maxHeight = -topIndexY; | |
| 1899 if (topIndexY > 0) { | |
| 1900 maxHeight += renderer.getLineHeight(lineIndex--); | |
| 1901 } | |
| 1902 while (height > maxHeight && lineIndex >= 0) { | |
| 1903 maxHeight += renderer.getLineHeight(lineIndex--); | |
| 1904 } | |
| 1905 } | |
| 1906 return Math.min(height, maxHeight); | |
| 1907 } | |
| 1908 int getAvailableHeightBellow(int height) { | |
| 1909 int partialBottomIndex = getPartialBottomIndex(); | |
| 1910 int topY = getLinePixel(partialBottomIndex); | |
| 1911 int lineHeight = renderer.getLineHeight(partialBottomIndex); | |
| 1912 int availableHeight = 0; | |
| 1913 int clientAreaHeight = this.clientAreaHeight - topMargin - bottomMargin; | |
| 1914 if (topY + lineHeight > clientAreaHeight) { | |
| 1915 availableHeight = lineHeight - (clientAreaHeight - topY); | |
| 1916 } | |
| 1917 int lineIndex = partialBottomIndex + 1; | |
| 1918 int lineCount = content.getLineCount(); | |
| 1919 while (height > availableHeight && lineIndex < lineCount) { | |
| 1920 availableHeight += renderer.getLineHeight(lineIndex++); | |
| 1921 } | |
| 1922 return Math.min(height, availableHeight); | |
| 1923 } | |
| 1924 /** | |
| 1925 * Returns a string that uses only the line delimiter specified by the | |
| 1926 * StyledTextContent implementation. | |
| 1927 * <p> | |
| 1928 * Returns only the first line if the widget has the DWT.SINGLE style. | |
| 1929 * </p> | |
| 1930 * | |
| 1931 * @param text the text that may have line delimiters that don't | |
| 1932 * match the model line delimiter. Possible line delimiters | |
| 1933 * are CR ('\r'), LF ('\n'), CR/LF ("\r\n") | |
| 1934 * @return the converted text that only uses the line delimiter | |
| 1935 * specified by the model. Returns only the first line if the widget | |
| 1936 * has the DWT.SINGLE style. | |
| 1937 */ | |
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1938 String getModelDelimitedText(String text) { |
| 155 | 1939 int length = text.length; |
| 1940 if (length is 0) { | |
| 1941 return text; | |
| 1942 } | |
| 1943 int crIndex = 0; | |
| 1944 int lfIndex = 0; | |
| 1945 int i = 0; | |
| 1946 StringBuffer convertedText = new StringBuffer(length); | |
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1947 String delimiter = getLineDelimiter(); |
| 155 | 1948 while (i < length) { |
| 1949 if (crIndex !is -1) { | |
| 1950 crIndex = tango.text.Util.locate( text, DWT.CR, i); | |
| 1951 if( crIndex is text.length ) crIndex = -1; | |
| 1952 } | |
| 1953 if (lfIndex !is -1) { | |
| 1954 lfIndex = tango.text.Util.locate( text, DWT.LF, i); | |
| 1955 if( lfIndex is text.length ) lfIndex = -1; | |
| 1956 } | |
| 1957 if (lfIndex is -1 && crIndex is -1) { // no more line breaks? | |
| 1958 break; | |
| 1959 } else if ((crIndex < lfIndex && crIndex !is -1) || lfIndex is -1) { | |
| 1960 convertedText.append(text[i .. crIndex]); | |
| 1961 if (lfIndex is crIndex + 1) { // CR/LF combination? | |
| 1962 i = lfIndex + 1; | |
| 1963 } else { | |
| 1964 i = crIndex + 1; | |
| 1965 } | |
| 1966 } else { // LF occurs before CR! | |
| 1967 convertedText.append(text[i .. lfIndex]); | |
| 1968 i = lfIndex + 1; | |
| 1969 } | |
| 1970 if (isSingleLine()) { | |
| 1971 break; | |
| 1972 } | |
| 1973 convertedText.append(delimiter); | |
| 1974 } | |
| 1975 // copy remaining text if any and if not in single line mode or no | |
| 1976 // text copied thus far (because there only is one line) | |
| 1977 if (i < length && (!isSingleLine() || convertedText.length() is 0)) { | |
| 1978 convertedText.append(text[i .. $]); | |
| 1979 } | |
| 1980 return convertedText.toString(); | |
| 1981 } | |
| 1982 bool checkDragDetect(Event event) { | |
| 1983 if (!isListening(DWT.DragDetect)) return false; | |
| 1984 if (IS_MOTIF) { | |
| 1985 if (event.button !is 2) return false; | |
| 1986 } else { | |
| 1987 if (event.button !is 1) return false; | |
| 1988 } | |
| 1989 if (selection.x is selection.y) return false; | |
| 213 | 1990 int offset = getOffsetAtPoint(event.x, event.y, null, true); |
| 1991 if (selection.x <= offset && offset < selection.y) { | |
| 155 | 1992 return dragDetect(event); |
| 1993 } | |
| 1994 return false; | |
| 1995 } | |
| 1996 /** | |
| 1997 * Creates default key bindings. | |
| 1998 */ | |
| 1999 void createKeyBindings() { | |
| 2000 int nextKey = isMirrored() ? DWT.ARROW_LEFT : DWT.ARROW_RIGHT; | |
| 2001 int previousKey = isMirrored() ? DWT.ARROW_RIGHT : DWT.ARROW_LEFT; | |
| 2002 | |
| 2003 // Navigation | |
| 2004 setKeyBinding(DWT.ARROW_UP, ST.LINE_UP); | |
| 2005 setKeyBinding(DWT.ARROW_DOWN, ST.LINE_DOWN); | |
| 2006 if (IS_CARBON) { | |
| 2007 setKeyBinding(previousKey | DWT.MOD1, ST.LINE_START); | |
| 2008 setKeyBinding(nextKey | DWT.MOD1, ST.LINE_END); | |
| 2009 setKeyBinding(DWT.HOME, ST.TEXT_START); | |
| 2010 setKeyBinding(DWT.END, ST.TEXT_END); | |
| 2011 setKeyBinding(DWT.ARROW_UP | DWT.MOD1, ST.TEXT_START); | |
| 2012 setKeyBinding(DWT.ARROW_DOWN | DWT.MOD1, ST.TEXT_END); | |
| 2013 setKeyBinding(nextKey | DWT.MOD3, ST.WORD_NEXT); | |
| 2014 setKeyBinding(previousKey | DWT.MOD3, ST.WORD_PREVIOUS); | |
| 2015 } else { | |
| 2016 setKeyBinding(DWT.HOME, ST.LINE_START); | |
| 2017 setKeyBinding(DWT.END, ST.LINE_END); | |
| 2018 setKeyBinding(DWT.HOME | DWT.MOD1, ST.TEXT_START); | |
| 2019 setKeyBinding(DWT.END | DWT.MOD1, ST.TEXT_END); | |
| 2020 setKeyBinding(nextKey | DWT.MOD1, ST.WORD_NEXT); | |
| 2021 setKeyBinding(previousKey | DWT.MOD1, ST.WORD_PREVIOUS); | |
| 2022 } | |
| 2023 setKeyBinding(DWT.PAGE_UP, ST.PAGE_UP); | |
| 2024 setKeyBinding(DWT.PAGE_DOWN, ST.PAGE_DOWN); | |
| 2025 setKeyBinding(DWT.PAGE_UP | DWT.MOD1, ST.WINDOW_START); | |
| 2026 setKeyBinding(DWT.PAGE_DOWN | DWT.MOD1, ST.WINDOW_END); | |
| 2027 setKeyBinding(nextKey, ST.COLUMN_NEXT); | |
| 2028 setKeyBinding(previousKey, ST.COLUMN_PREVIOUS); | |
| 2029 | |
| 2030 // Selection | |
| 2031 setKeyBinding(DWT.ARROW_UP | DWT.MOD2, ST.SELECT_LINE_UP); | |
| 2032 setKeyBinding(DWT.ARROW_DOWN | DWT.MOD2, ST.SELECT_LINE_DOWN); | |
| 2033 if (IS_CARBON) { | |
| 2034 setKeyBinding(previousKey | DWT.MOD1 | DWT.MOD2, ST.SELECT_LINE_START); | |
| 2035 setKeyBinding(nextKey | DWT.MOD1 | DWT.MOD2, ST.SELECT_LINE_END); | |
| 2036 setKeyBinding(DWT.HOME | DWT.MOD2, ST.SELECT_TEXT_START); | |
| 2037 setKeyBinding(DWT.END | DWT.MOD2, ST.SELECT_TEXT_END); | |
| 2038 setKeyBinding(DWT.ARROW_UP | DWT.MOD1 | DWT.MOD2, ST.SELECT_TEXT_START); | |
| 2039 setKeyBinding(DWT.ARROW_DOWN | DWT.MOD1 | DWT.MOD2, ST.SELECT_TEXT_END); | |
| 2040 setKeyBinding(nextKey | DWT.MOD2 | DWT.MOD3, ST.SELECT_WORD_NEXT); | |
| 2041 setKeyBinding(previousKey | DWT.MOD2 | DWT.MOD3, ST.SELECT_WORD_PREVIOUS); | |
| 2042 } else { | |
| 2043 setKeyBinding(DWT.HOME | DWT.MOD2, ST.SELECT_LINE_START); | |
| 2044 setKeyBinding(DWT.END | DWT.MOD2, ST.SELECT_LINE_END); | |
| 2045 setKeyBinding(DWT.HOME | DWT.MOD1 | DWT.MOD2, ST.SELECT_TEXT_START); | |
| 2046 setKeyBinding(DWT.END | DWT.MOD1 | DWT.MOD2, ST.SELECT_TEXT_END); | |
| 2047 setKeyBinding(nextKey | DWT.MOD1 | DWT.MOD2, ST.SELECT_WORD_NEXT); | |
| 2048 setKeyBinding(previousKey | DWT.MOD1 | DWT.MOD2, ST.SELECT_WORD_PREVIOUS); | |
| 2049 } | |
| 2050 setKeyBinding(DWT.PAGE_UP | DWT.MOD2, ST.SELECT_PAGE_UP); | |
| 2051 setKeyBinding(DWT.PAGE_DOWN | DWT.MOD2, ST.SELECT_PAGE_DOWN); | |
| 2052 setKeyBinding(DWT.PAGE_UP | DWT.MOD1 | DWT.MOD2, ST.SELECT_WINDOW_START); | |
| 2053 setKeyBinding(DWT.PAGE_DOWN | DWT.MOD1 | DWT.MOD2, ST.SELECT_WINDOW_END); | |
| 2054 setKeyBinding(nextKey | DWT.MOD2, ST.SELECT_COLUMN_NEXT); | |
| 2055 setKeyBinding(previousKey | DWT.MOD2, ST.SELECT_COLUMN_PREVIOUS); | |
| 2056 | |
| 2057 // Modification | |
| 2058 // Cut, Copy, Paste | |
| 2059 setKeyBinding('X' | DWT.MOD1, ST.CUT); | |
| 2060 setKeyBinding('C' | DWT.MOD1, ST.COPY); | |
| 2061 setKeyBinding('V' | DWT.MOD1, ST.PASTE); | |
| 2062 if (IS_CARBON) { | |
| 2063 setKeyBinding(DWT.DEL | DWT.MOD2, ST.DELETE_NEXT); | |
| 2064 setKeyBinding(DWT.BS | DWT.MOD3, ST.DELETE_WORD_PREVIOUS); | |
| 2065 setKeyBinding(DWT.DEL | DWT.MOD3, ST.DELETE_WORD_NEXT); | |
| 2066 } else { | |
| 2067 // Cut, Copy, Paste Wordstar style | |
| 2068 setKeyBinding(DWT.DEL | DWT.MOD2, ST.CUT); | |
| 2069 setKeyBinding(DWT.INSERT | DWT.MOD1, ST.COPY); | |
| 2070 setKeyBinding(DWT.INSERT | DWT.MOD2, ST.PASTE); | |
| 2071 } | |
| 2072 setKeyBinding(DWT.BS | DWT.MOD2, ST.DELETE_PREVIOUS); | |
| 2073 setKeyBinding(DWT.BS, ST.DELETE_PREVIOUS); | |
| 2074 setKeyBinding(DWT.DEL, ST.DELETE_NEXT); | |
| 2075 setKeyBinding(DWT.BS | DWT.MOD1, ST.DELETE_WORD_PREVIOUS); | |
| 2076 setKeyBinding(DWT.DEL | DWT.MOD1, ST.DELETE_WORD_NEXT); | |
| 2077 | |
| 2078 // Miscellaneous | |
| 2079 setKeyBinding(DWT.INSERT, ST.TOGGLE_OVERWRITE); | |
| 2080 } | |
| 2081 /** | |
| 2082 * Create the bitmaps to use for the caret in bidi mode. This | |
| 2083 * method only needs to be called upon widget creation and when the | |
| 2084 * font changes (the caret bitmap height needs to match font height). | |
| 2085 */ | |
| 2086 void createCaretBitmaps() { | |
| 2087 int caretWidth = BIDI_CARET_WIDTH; | |
| 2088 Display display = getDisplay(); | |
| 2089 if (leftCaretBitmap !is null) { | |
| 2090 if (defaultCaret !is null && leftCaretBitmap==defaultCaret.getImage()) { | |
| 2091 defaultCaret.setImage(null); | |
| 2092 } | |
| 2093 leftCaretBitmap.dispose(); | |
| 2094 } | |
| 2095 int lineHeight = renderer.getLineHeight(); | |
| 2096 leftCaretBitmap = new Image(display, caretWidth, lineHeight); | |
| 2097 GC gc = new GC (leftCaretBitmap); | |
| 2098 gc.setBackground(display.getSystemColor(DWT.COLOR_BLACK)); | |
| 2099 gc.fillRectangle(0, 0, caretWidth, lineHeight); | |
| 2100 gc.setForeground(display.getSystemColor(DWT.COLOR_WHITE)); | |
| 2101 gc.drawLine(0,0,0,lineHeight); | |
| 2102 gc.drawLine(0,0,caretWidth-1,0); | |
| 2103 gc.drawLine(0,1,1,1); | |
| 2104 gc.dispose(); | |
| 2105 | |
| 2106 if (rightCaretBitmap !is null) { | |
| 2107 if (defaultCaret !is null && rightCaretBitmap==defaultCaret.getImage()) { | |
| 2108 defaultCaret.setImage(null); | |
| 2109 } | |
| 2110 rightCaretBitmap.dispose(); | |
| 2111 } | |
| 2112 rightCaretBitmap = new Image(display, caretWidth, lineHeight); | |
| 2113 gc = new GC (rightCaretBitmap); | |
| 2114 gc.setBackground(display.getSystemColor(DWT.COLOR_BLACK)); | |
| 2115 gc.fillRectangle(0, 0, caretWidth, lineHeight); | |
| 2116 gc.setForeground(display.getSystemColor(DWT.COLOR_WHITE)); | |
| 2117 gc.drawLine(caretWidth-1,0,caretWidth-1,lineHeight); | |
| 2118 gc.drawLine(0,0,caretWidth-1,0); | |
| 2119 gc.drawLine(caretWidth-1,1,1,1); | |
| 2120 gc.dispose(); | |
| 2121 } | |
| 2122 /** | |
| 2123 * Moves the selected text to the clipboard. The text will be put in the | |
| 2124 * clipboard in plain text format and RTF format. | |
| 2125 * | |
| 2126 * @exception DWTException <ul> | |
| 2127 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 2128 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 2129 * </ul> | |
| 2130 */ | |
| 2131 public void cut(){ | |
| 2132 checkWidget(); | |
| 2133 int length = selection.y - selection.x; | |
| 2134 if (length > 0) { | |
| 2135 try { | |
| 2136 setClipboardContent(selection.x, length, DND.CLIPBOARD); | |
| 2137 } catch (DWTError error) { | |
| 2138 // Copy to clipboard failed. This happens when another application | |
| 2139 // is accessing the clipboard while we copy. Ignore the error. | |
| 2140 // Fixes 1GDQAVN | |
| 2141 // Rethrow all other errors. Fixes bug 17578. | |
| 2142 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 2143 throw error; | |
| 2144 } | |
| 2145 // Abort cut operation if copy to clipboard fails. | |
| 2146 // Fixes bug 21030. | |
| 2147 return; | |
| 2148 } | |
| 2149 doDelete(); | |
| 2150 } | |
| 2151 } | |
| 2152 /** | |
| 2153 * A mouse move event has occurred. See if we should start autoscrolling. If | |
| 2154 * the move position is outside of the client area, initiate autoscrolling. | |
| 2155 * Otherwise, we've moved back into the widget so end autoscrolling. | |
| 2156 */ | |
| 2157 void doAutoScroll(Event event) { | |
| 2158 if (event.y > clientAreaHeight) { | |
| 2159 doAutoScroll(DWT.DOWN, event.y - clientAreaHeight); | |
| 2160 } else if (event.y < 0) { | |
| 2161 doAutoScroll(DWT.UP, -event.y); | |
| 2162 } else if (event.x < leftMargin && !wordWrap) { | |
| 2163 doAutoScroll(ST.COLUMN_PREVIOUS, leftMargin - event.x); | |
| 2164 } else if (event.x > clientAreaWidth - leftMargin - rightMargin && !wordWrap) { | |
| 2165 doAutoScroll(ST.COLUMN_NEXT, event.x - (clientAreaWidth - leftMargin - rightMargin)); | |
| 2166 } else { | |
| 2167 endAutoScroll(); | |
| 2168 } | |
| 2169 } | |
| 2170 /** | |
| 2171 * Initiates autoscrolling. | |
| 2172 * | |
| 2173 * @param direction DWT.UP, DWT.DOWN, DWT.COLUMN_NEXT, DWT.COLUMN_PREVIOUS | |
| 2174 */ | |
| 2175 void doAutoScroll(int direction, int distance) { | |
| 2176 autoScrollDistance = distance; | |
| 2177 // If we're already autoscrolling in the given direction do nothing | |
| 2178 if (autoScrollDirection is direction) { | |
| 2179 return; | |
| 2180 } | |
| 2181 | |
| 2182 Runnable timer = null; | |
| 2183 final Display disp = getDisplay(); | |
| 2184 // Set a timer that will simulate the user pressing and holding | |
| 2185 // down a cursor key (i.e., arrowUp, arrowDown). | |
| 2186 if (direction is DWT.UP) { | |
| 2187 timer = new class(disp) Runnable { | |
| 2188 Display display; | |
| 2189 this( Display d ){ this.display = d; } | |
| 2190 public void run() { | |
| 2191 if (autoScrollDirection is DWT.UP) { | |
| 2192 doSelectionPageUp(autoScrollDistance); | |
| 2193 display.timerExec(V_SCROLL_RATE, this); | |
| 2194 } | |
| 2195 } | |
| 2196 }; | |
| 2197 autoScrollDirection = direction; | |
| 2198 display.timerExec(V_SCROLL_RATE, timer); | |
| 2199 } else if (direction is DWT.DOWN) { | |
| 2200 timer = new class(disp) Runnable { | |
| 2201 Display display; | |
| 2202 this( Display d ){ this.display = d; } | |
| 2203 public void run() { | |
| 2204 if (autoScrollDirection is DWT.DOWN) { | |
| 2205 doSelectionPageDown(autoScrollDistance); | |
| 2206 display.timerExec(V_SCROLL_RATE, this); | |
| 2207 } | |
| 2208 } | |
| 2209 }; | |
| 2210 autoScrollDirection = direction; | |
| 2211 display.timerExec(V_SCROLL_RATE, timer); | |
| 2212 } else if (direction is ST.COLUMN_NEXT) { | |
| 2213 timer = new class(disp) Runnable { | |
| 2214 Display display; | |
| 2215 this( Display d ){ this.display = d; } | |
| 2216 public void run() { | |
| 2217 if (autoScrollDirection is ST.COLUMN_NEXT) { | |
| 2218 doVisualNext(); | |
| 2219 setMouseWordSelectionAnchor(); | |
| 2220 doMouseSelection(); | |
| 2221 display.timerExec(H_SCROLL_RATE, this); | |
| 2222 } | |
| 2223 } | |
| 2224 }; | |
| 2225 autoScrollDirection = direction; | |
| 2226 display.timerExec(H_SCROLL_RATE, timer); | |
| 2227 } else if (direction is ST.COLUMN_PREVIOUS) { | |
| 2228 timer = new class(disp) Runnable { | |
| 2229 Display display; | |
| 2230 this( Display d ){ this.display = d; } | |
| 2231 public void run() { | |
| 2232 if (autoScrollDirection is ST.COLUMN_PREVIOUS) { | |
| 2233 doVisualPrevious(); | |
| 2234 setMouseWordSelectionAnchor(); | |
| 2235 doMouseSelection(); | |
| 2236 display.timerExec(H_SCROLL_RATE, this); | |
| 2237 } | |
| 2238 } | |
| 2239 }; | |
| 2240 autoScrollDirection = direction; | |
| 2241 display.timerExec(H_SCROLL_RATE, timer); | |
| 2242 } | |
| 2243 } | |
| 2244 /** | |
| 2245 * Deletes the previous character. Delete the selected text if any. | |
| 2246 * Move the caret in front of the deleted text. | |
| 2247 */ | |
| 2248 void doBackspace() { | |
| 2249 Event event = new Event(); | |
| 2250 event.text = ""; | |
| 2251 if (selection.x !is selection.y) { | |
| 2252 event.start = selection.x; | |
| 2253 event.end = selection.y; | |
| 2254 sendKeyEvent(event); | |
| 2255 } else if (caretOffset > 0) { | |
| 2256 int lineIndex = content.getLineAtOffset(caretOffset); | |
| 2257 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 2258 if (caretOffset is lineOffset) { | |
| 2259 lineOffset = content.getOffsetAtLine(lineIndex - 1); | |
| 2260 event.start = lineOffset + content.getLine(lineIndex - 1).length; | |
| 2261 event.end = caretOffset; | |
| 2262 } else { | |
| 2263 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2264 int start = layout.getPreviousOffset(caretOffset - lineOffset, DWT.MOVEMENT_CHAR); | |
| 2265 renderer.disposeTextLayout(layout); | |
| 2266 event.start = start + lineOffset; | |
| 2267 event.end = caretOffset; | |
| 2268 } | |
| 2269 sendKeyEvent(event); | |
| 2270 } | |
| 2271 } | |
| 2272 /** | |
| 2273 * Replaces the selection with the character or insert the character at the | |
| 2274 * current caret position if no selection exists. | |
| 2275 * <p> | |
| 2276 * If a carriage return was typed replace it with the line break character | |
| 2277 * used by the widget on this platform. | |
| 2278 * </p> | |
| 2279 * | |
| 2280 * @param key the character typed by the user | |
| 2281 */ | |
| 2282 void doContent(char key) { | |
| 2283 Event event = new Event(); | |
| 2284 event.start = selection.x; | |
| 2285 event.end = selection.y; | |
| 2286 // replace a CR line break with the widget line break | |
| 2287 // CR does not make sense on Windows since most (all?) applications | |
| 2288 // don't recognize CR as a line break. | |
| 2289 if (key is DWT.CR || key is DWT.LF) { | |
| 2290 if (!isSingleLine()) { | |
| 2291 event.text = getLineDelimiter(); | |
| 2292 } | |
| 2293 } else if (selection.x is selection.y && overwrite && key !is TAB) { | |
| 2294 // no selection and overwrite mode is on and the typed key is not a | |
| 2295 // tab character (tabs are always inserted without overwriting)? | |
| 2296 int lineIndex = content.getLineAtOffset(event.end); | |
| 2297 int lineOffset = content.getOffsetAtLine(lineIndex); | |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
2298 String line = content.getLine(lineIndex); |
| 155 | 2299 // replace character at caret offset if the caret is not at the |
| 2300 // end of the line | |
| 2301 if (event.end < lineOffset + line.length) { | |
| 2302 event.end++; | |
| 2303 } | |
| 2304 event.text = [key]; | |
| 2305 } else { | |
| 2306 event.text = [key]; | |
| 2307 } | |
| 2308 if (event.text !is null) { | |
| 213 | 2309 if (textLimit > 0 && content.getCharCount() - (event.end - event.start) >= textLimit) { |
| 2310 return; | |
| 2311 } | |
| 155 | 2312 sendKeyEvent(event); |
| 2313 } | |
| 2314 } | |
| 2315 /** | |
| 2316 * Moves the caret after the last character of the widget content. | |
| 2317 */ | |
| 2318 void doContentEnd() { | |
| 2319 // place caret at end of first line if receiver is in single | |
| 2320 // line mode. fixes 4820. | |
| 2321 if (isSingleLine()) { | |
| 2322 doLineEnd(); | |
| 2323 } else { | |
| 2324 int length = content.getCharCount(); | |
| 2325 if (caretOffset < length) { | |
| 2326 caretOffset = length; | |
| 2327 showCaret(); | |
| 2328 } | |
| 2329 } | |
| 2330 } | |
| 2331 /** | |
| 2332 * Moves the caret in front of the first character of the widget content. | |
| 2333 */ | |
| 2334 void doContentStart() { | |
| 2335 if (caretOffset > 0) { | |
| 2336 caretOffset = 0; | |
| 2337 showCaret(); | |
| 2338 } | |
| 2339 } | |
| 2340 /** | |
| 2341 * Moves the caret to the start of the selection if a selection exists. | |
| 2342 * Otherwise, if no selection exists move the cursor according to the | |
| 2343 * cursor selection rules. | |
| 2344 * | |
| 2345 * @see #doSelectionCursorPrevious | |
| 2346 */ | |
| 2347 void doCursorPrevious() { | |
| 2348 if (selection.y - selection.x > 0) { | |
| 2349 caretOffset = selection.x; | |
| 2350 caretAlignment = OFFSET_LEADING; | |
| 2351 showCaret(); | |
| 2352 } else { | |
| 2353 doSelectionCursorPrevious(); | |
| 2354 } | |
| 2355 } | |
| 2356 /** | |
| 2357 * Moves the caret to the end of the selection if a selection exists. | |
| 2358 * Otherwise, if no selection exists move the cursor according to the | |
| 2359 * cursor selection rules. | |
| 2360 * | |
| 2361 * @see #doSelectionCursorNext | |
| 2362 */ | |
| 2363 void doCursorNext() { | |
| 2364 if (selection.y - selection.x > 0) { | |
| 2365 caretOffset = selection.y; | |
| 2366 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 2367 showCaret(); | |
| 2368 } else { | |
| 2369 doSelectionCursorNext(); | |
| 2370 } | |
| 2371 } | |
| 2372 /** | |
| 2373 * Deletes the next character. Delete the selected text if any. | |
| 2374 */ | |
| 2375 void doDelete() { | |
| 2376 Event event = new Event(); | |
| 2377 event.text = ""; | |
| 2378 if (selection.x !is selection.y) { | |
| 2379 event.start = selection.x; | |
| 2380 event.end = selection.y; | |
| 2381 sendKeyEvent(event); | |
| 2382 } else if (caretOffset < content.getCharCount()) { | |
| 2383 int line = content.getLineAtOffset(caretOffset); | |
| 2384 int lineOffset = content.getOffsetAtLine(line); | |
| 2385 int lineLength = content.getLine(line).length; | |
| 2386 if (caretOffset is lineOffset + lineLength) { | |
| 2387 event.start = caretOffset; | |
| 2388 event.end = content.getOffsetAtLine(line + 1); | |
| 2389 } else { | |
| 2390 event.start = caretOffset; | |
| 2391 event.end = getClusterNext(caretOffset, line); | |
| 2392 } | |
| 2393 sendKeyEvent(event); | |
| 2394 } | |
| 2395 } | |
| 2396 /** | |
| 2397 * Deletes the next word. | |
| 2398 */ | |
| 2399 void doDeleteWordNext() { | |
| 2400 if (selection.x !is selection.y) { | |
| 2401 // if a selection exists, treat the as if | |
| 2402 // only the delete key was pressed | |
| 2403 doDelete(); | |
| 2404 } else { | |
| 2405 Event event = new Event(); | |
| 2406 event.text = ""; | |
| 2407 event.start = caretOffset; | |
| 2408 event.end = getWordNext(caretOffset, DWT.MOVEMENT_WORD); | |
| 2409 sendKeyEvent(event); | |
| 2410 } | |
| 2411 } | |
| 2412 /** | |
| 2413 * Deletes the previous word. | |
| 2414 */ | |
| 2415 void doDeleteWordPrevious() { | |
| 2416 if (selection.x !is selection.y) { | |
| 2417 // if a selection exists, treat as if | |
| 2418 // only the backspace key was pressed | |
| 2419 doBackspace(); | |
| 2420 } else { | |
| 2421 Event event = new Event(); | |
| 2422 event.text = ""; | |
| 2423 event.start = getWordPrevious(caretOffset, DWT.MOVEMENT_WORD); | |
| 2424 event.end = caretOffset; | |
| 2425 sendKeyEvent(event); | |
| 2426 } | |
| 2427 } | |
| 2428 /** | |
| 2429 * Moves the caret one line down and to the same character offset relative | |
| 2430 * to the beginning of the line. Move the caret to the end of the new line | |
| 2431 * if the new line is shorter than the character offset. | |
| 2432 */ | |
| 2433 void doLineDown(bool select) { | |
| 2434 int caretLine = getCaretLine(); | |
| 2435 int lineCount = content.getLineCount(); | |
| 2436 int y = 0; | |
| 2437 bool lastLine = false; | |
| 2438 if (wordWrap) { | |
| 2439 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2440 int offsetInLine = caretOffset - lineOffset; | |
| 2441 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2442 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2443 int layoutLineCount = layout.getLineCount(); | |
| 2444 if (lineIndex is layoutLineCount - 1) { | |
| 2445 lastLine = caretLine is lineCount - 1; | |
| 2446 caretLine++; | |
| 2447 } else { | |
| 2448 y = layout.getLineBounds(lineIndex + 1).y; | |
| 2449 } | |
| 2450 renderer.disposeTextLayout(layout); | |
| 2451 } else { | |
| 2452 lastLine = caretLine is lineCount - 1; | |
| 2453 caretLine++; | |
| 2454 } | |
| 2455 if (lastLine) { | |
| 2456 if (select) caretOffset = content.getCharCount(); | |
| 2457 } else { | |
| 2458 caretOffset = getOffsetAtPoint(columnX, y, caretLine); | |
| 2459 } | |
| 2460 int oldColumnX = columnX; | |
| 2461 int oldHScrollOffset = horizontalScrollOffset; | |
| 2462 if (select) { | |
| 2463 setMouseWordSelectionAnchor(); | |
| 2464 // select first and then scroll to reduce flash when key | |
| 2465 // repeat scrolls lots of lines | |
| 2466 doSelection(ST.COLUMN_NEXT); | |
| 2467 } | |
| 2468 showCaret(); | |
| 2469 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2470 columnX = oldColumnX + hScrollChange; | |
| 2471 } | |
| 2472 /** | |
| 2473 * Moves the caret to the end of the line. | |
| 2474 */ | |
| 2475 void doLineEnd() { | |
| 2476 int caretLine = getCaretLine(); | |
| 2477 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2478 int lineEndOffset; | |
| 2479 if (wordWrap) { | |
| 2480 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2481 int offsetInLine = caretOffset - lineOffset; | |
| 2482 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2483 int[] offsets = layout.getLineOffsets(); | |
| 2484 lineEndOffset = lineOffset + offsets[lineIndex + 1]; | |
| 2485 renderer.disposeTextLayout(layout); | |
| 2486 } else { | |
| 2487 int lineLength = content.getLine(caretLine).length; | |
| 2488 lineEndOffset = lineOffset + lineLength; | |
| 2489 } | |
| 2490 if (caretOffset < lineEndOffset) { | |
| 2491 caretOffset = lineEndOffset; | |
| 2492 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 2493 showCaret(); | |
| 2494 } | |
| 2495 } | |
| 2496 /** | |
| 2497 * Moves the caret to the beginning of the line. | |
| 2498 */ | |
| 2499 void doLineStart() { | |
| 2500 int caretLine = getCaretLine(); | |
| 2501 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2502 if (wordWrap) { | |
| 2503 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2504 int offsetInLine = caretOffset - lineOffset; | |
| 2505 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2506 int[] offsets = layout.getLineOffsets(); | |
| 2507 lineOffset += offsets[lineIndex]; | |
| 2508 renderer.disposeTextLayout(layout); | |
| 2509 } | |
| 2510 if (caretOffset > lineOffset) { | |
| 2511 caretOffset = lineOffset; | |
| 2512 caretAlignment = OFFSET_LEADING; | |
| 2513 showCaret(); | |
| 2514 } | |
| 2515 } | |
| 2516 /** | |
| 2517 * Moves the caret one line up and to the same character offset relative | |
| 2518 * to the beginning of the line. Move the caret to the end of the new line | |
| 2519 * if the new line is shorter than the character offset. | |
| 2520 */ | |
| 2521 void doLineUp(bool select) { | |
| 2522 int caretLine = getCaretLine(), y = 0; | |
| 2523 bool firstLine = false; | |
| 2524 if (wordWrap) { | |
| 2525 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2526 int offsetInLine = caretOffset - lineOffset; | |
| 2527 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2528 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2529 if (lineIndex is 0) { | |
| 2530 firstLine = caretLine is 0; | |
| 2531 if (!firstLine) { | |
| 2532 caretLine--; | |
| 2533 y = renderer.getLineHeight(caretLine) - 1; | |
| 2534 } | |
| 2535 } else { | |
| 2536 y = layout.getLineBounds(lineIndex - 1).y; | |
| 2537 } | |
| 2538 renderer.disposeTextLayout(layout); | |
| 2539 } else { | |
| 2540 firstLine = caretLine is 0; | |
| 2541 caretLine--; | |
| 2542 } | |
| 2543 if (firstLine) { | |
| 2544 if (select) caretOffset = 0; | |
| 2545 } else { | |
| 2546 caretOffset = getOffsetAtPoint(columnX, y, caretLine); | |
| 2547 } | |
| 2548 int oldColumnX = columnX; | |
| 2549 int oldHScrollOffset = horizontalScrollOffset; | |
| 2550 if (select) setMouseWordSelectionAnchor(); | |
| 2551 showCaret(); | |
| 2552 if (select) doSelection(ST.COLUMN_PREVIOUS); | |
| 2553 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2554 columnX = oldColumnX + hScrollChange; | |
| 2555 } | |
| 2556 /** | |
| 2557 * Moves the caret to the specified location. | |
| 2558 * | |
| 2559 * @param x x location of the new caret position | |
| 2560 * @param y y location of the new caret position | |
| 2561 * @param select the location change is a selection operation. | |
| 2562 * include the line delimiter in the selection | |
| 2563 */ | |
| 2564 void doMouseLocationChange(int x, int y, bool select) { | |
| 2565 int line = getLineIndex(y); | |
| 2566 | |
| 2567 updateCaretDirection = true; | |
| 2568 // allow caret to be placed below first line only if receiver is | |
| 2569 // not in single line mode. fixes 4820. | |
| 2570 if (line < 0 || (isSingleLine() && line > 0)) { | |
| 2571 return; | |
| 2572 } | |
| 2573 int oldCaretAlignment = caretAlignment; | |
| 2574 int newCaretOffset = getOffsetAtPoint(x, y); | |
| 2575 | |
| 213 | 2576 if (doubleClickEnabled && clickCount > 1) { |
| 155 | 2577 newCaretOffset = doMouseWordSelect(x, newCaretOffset, line); |
| 2578 } | |
| 2579 | |
| 2580 int newCaretLine = content.getLineAtOffset(newCaretOffset); | |
| 2581 | |
| 2582 // Is the mouse within the left client area border or on | |
| 2583 // a different line? If not the autoscroll selection | |
| 2584 // could be incorrectly reset. Fixes 1GKM3XS | |
| 2585 if (0 <= y && y < clientAreaHeight && | |
| 2586 (0 <= x && x < clientAreaWidth || wordWrap || | |
| 2587 newCaretLine !is content.getLineAtOffset(caretOffset))) { | |
| 2588 if (newCaretOffset !is caretOffset || caretAlignment !is oldCaretAlignment) { | |
| 2589 caretOffset = newCaretOffset; | |
| 2590 if (select) doMouseSelection(); | |
| 2591 showCaret(); | |
| 2592 } | |
| 2593 } | |
| 2594 if (!select) { | |
| 2595 caretOffset = newCaretOffset; | |
| 2596 clearSelection(true); | |
| 2597 } | |
| 2598 } | |
| 2599 /** | |
| 2600 * Updates the selection based on the caret position | |
| 2601 */ | |
| 2602 void doMouseSelection() { | |
| 2603 if (caretOffset <= selection.x || | |
| 2604 (caretOffset > selection.x && | |
| 2605 caretOffset < selection.y && selectionAnchor is selection.x)) { | |
| 2606 doSelection(ST.COLUMN_PREVIOUS); | |
| 2607 } else { | |
| 2608 doSelection(ST.COLUMN_NEXT); | |
| 2609 } | |
| 2610 } | |
| 2611 /** | |
| 2612 * Returns the offset of the word at the specified offset. | |
| 2613 * If the current selection : from high index to low index | |
| 2614 * (i.e., right to left, or caret is at left border of selection on | |
| 2615 * non-bidi platforms) the start offset of the word preceding the | |
| 2616 * selection is returned. If the current selection : from | |
| 2617 * low index to high index the end offset of the word following | |
| 2618 * the selection is returned. | |
| 2619 * | |
| 2620 * @param x mouse x location | |
| 2621 * @param newCaretOffset caret offset of the mouse cursor location | |
| 2622 * @param line line index of the mouse cursor location | |
| 2623 */ | |
| 2624 int doMouseWordSelect(int x, int newCaretOffset, int line) { | |
| 2625 // flip selection anchor based on word selection direction from | |
| 2626 // base double click. Always do this here (and don't rely on doAutoScroll) | |
| 2627 // because auto scroll only does not cover all possible mouse selections | |
| 2628 // (e.g., mouse x < 0 && mouse y > caret line y) | |
| 2629 if (newCaretOffset < selectionAnchor && selectionAnchor is selection.x) { | |
| 2630 selectionAnchor = doubleClickSelection.y; | |
| 2631 } else if (newCaretOffset > selectionAnchor && selectionAnchor is selection.y) { | |
| 2632 selectionAnchor = doubleClickSelection.x; | |
| 2633 } | |
| 2634 if (0 <= x && x < clientAreaWidth) { | |
| 2635 bool wordSelect = (clickCount & 1) is 0; | |
| 2636 if (caretOffset is selection.x) { | |
| 2637 if (wordSelect) { | |
| 2638 newCaretOffset = getWordPrevious(newCaretOffset, DWT.MOVEMENT_WORD_START); | |
| 2639 } else { | |
| 2640 newCaretOffset = content.getOffsetAtLine(line); | |
| 2641 } | |
| 2642 } else { | |
| 2643 if (wordSelect) { | |
| 2644 newCaretOffset = getWordNext(newCaretOffset, DWT.MOVEMENT_WORD_END); | |
| 2645 } else { | |
| 2646 int lineEnd = content.getCharCount(); | |
| 2647 if (line + 1 < content.getLineCount()) { | |
| 2648 lineEnd = content.getOffsetAtLine(line + 1); | |
| 2649 } | |
| 2650 newCaretOffset = lineEnd; | |
| 2651 } | |
| 2652 } | |
| 2653 } | |
| 2654 return newCaretOffset; | |
| 2655 } | |
| 2656 /** | |
| 2657 * Scrolls one page down so that the last line (truncated or whole) | |
| 2658 * of the current page becomes the fully visible top line. | |
| 2659 * <p> | |
| 2660 * The caret is scrolled the same number of lines so that its location | |
| 2661 * relative to the top line remains the same. The exception is the end | |
| 2662 * of the text where a full page scroll is not possible. In this case | |
| 2663 * the caret is moved after the last character. | |
| 2664 * </p> | |
| 2665 * | |
| 2666 * @param select whether or not to select the page | |
| 2667 */ | |
| 2668 void doPageDown(bool select, int height) { | |
| 2669 if (isSingleLine()) return; | |
| 2670 int oldColumnX = columnX; | |
| 2671 int oldHScrollOffset = horizontalScrollOffset; | |
| 2672 if (isFixedLineHeight()) { | |
| 2673 int lineCount = content.getLineCount(); | |
| 2674 int caretLine = getCaretLine(); | |
| 2675 if (caretLine < lineCount - 1) { | |
| 2676 int lineHeight = renderer.getLineHeight(); | |
| 2677 int lines = (height is -1 ? clientAreaHeight : height) / lineHeight; | |
| 2678 int scrollLines = Math.min(lineCount - caretLine - 1, lines); | |
| 2679 // ensure that scrollLines never gets negative and at least one | |
| 2680 // line is scrolled. fixes bug 5602. | |
| 2681 scrollLines = Math.max(1, scrollLines); | |
| 2682 caretOffset = getOffsetAtPoint(columnX, getLinePixel(caretLine + scrollLines)); | |
| 2683 if (select) { | |
| 2684 doSelection(ST.COLUMN_NEXT); | |
| 2685 } | |
| 2686 // scroll one page down or to the bottom | |
| 2687 int verticalMaximum = lineCount * getVerticalIncrement(); | |
| 2688 int pageSize = clientAreaHeight; | |
| 2689 int verticalScrollOffset = getVerticalScrollOffset(); | |
| 2690 int scrollOffset = verticalScrollOffset + scrollLines * getVerticalIncrement(); | |
| 2691 if (scrollOffset + pageSize > verticalMaximum) { | |
| 2692 scrollOffset = verticalMaximum - pageSize; | |
| 2693 } | |
| 2694 if (scrollOffset > verticalScrollOffset) { | |
| 2695 scrollVertical(scrollOffset - verticalScrollOffset, true); | |
| 2696 } | |
| 2697 } | |
| 2698 } else { | |
| 2699 int lineCount = content.getLineCount(); | |
| 2700 int caretLine = getCaretLine(); | |
| 2701 int lineIndex, lineHeight; | |
| 2702 if (height is -1) { | |
| 2703 lineIndex = getPartialBottomIndex(); | |
| 2704 int topY = getLinePixel(lineIndex); | |
| 2705 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2706 height = topY; | |
| 2707 if (topY + lineHeight <= clientAreaHeight) { | |
| 2708 height += lineHeight; | |
| 2709 } else { | |
| 2710 if (wordWrap) { | |
| 2711 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2712 int y = clientAreaHeight - topY; | |
| 2713 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2714 Rectangle bounds = layout.getLineBounds(i); | |
| 2715 if (bounds.contains(bounds.x, y)) { | |
| 2716 height += bounds.y; | |
| 2717 break; | |
| 2718 } | |
| 2719 } | |
| 2720 renderer.disposeTextLayout(layout); | |
| 2721 } | |
| 2722 } | |
| 2723 } else { | |
| 2724 lineIndex = getLineIndex(height); | |
| 2725 int topLineY = getLinePixel(lineIndex); | |
| 2726 if (wordWrap) { | |
| 2727 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2728 int y = height - topLineY; | |
| 2729 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2730 Rectangle bounds = layout.getLineBounds(i); | |
| 2731 if (bounds.contains(bounds.x, y)) { | |
| 2732 height = topLineY + bounds.y + bounds.height; | |
| 2733 break; | |
| 2734 } | |
| 2735 } | |
| 2736 renderer.disposeTextLayout(layout); | |
| 2737 } else { | |
| 2738 height = topLineY + renderer.getLineHeight(lineIndex); | |
| 2739 } | |
| 2740 } | |
| 2741 int caretHeight = height; | |
| 2742 if (wordWrap) { | |
| 2743 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2744 int offsetInLine = caretOffset - content.getOffsetAtLine(caretLine); | |
| 2745 lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2746 caretHeight += layout.getLineBounds(lineIndex).y; | |
| 2747 renderer.disposeTextLayout(layout); | |
| 2748 } | |
| 2749 lineIndex = caretLine; | |
| 2750 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2751 while (caretHeight - lineHeight >= 0 && lineIndex < lineCount - 1) { | |
| 2752 caretHeight -= lineHeight; | |
| 2753 lineHeight = renderer.getLineHeight(++lineIndex); | |
| 2754 } | |
| 2755 caretOffset = getOffsetAtPoint(columnX, caretHeight, lineIndex); | |
| 2756 if (select) doSelection(ST.COLUMN_NEXT); | |
| 2757 height = getAvailableHeightBellow(height); | |
| 2758 scrollVertical(height, true); | |
| 2759 if (height is 0) setCaretLocation(); | |
| 2760 } | |
| 2761 showCaret(); | |
| 2762 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2763 columnX = oldColumnX + hScrollChange; | |
| 2764 } | |
| 2765 /** | |
| 2766 * Moves the cursor to the end of the last fully visible line. | |
| 2767 */ | |
| 2768 void doPageEnd() { | |
| 2769 // go to end of line if in single line mode. fixes 5673 | |
| 2770 if (isSingleLine()) { | |
| 2771 doLineEnd(); | |
| 2772 } else { | |
| 2773 int bottomOffset; | |
| 2774 if (wordWrap) { | |
| 2775 int lineIndex = getPartialBottomIndex(); | |
| 2776 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2777 int y = (clientAreaHeight - bottomMargin) - getLinePixel(lineIndex); | |
| 2778 int index = layout.getLineCount() - 1; | |
| 2779 while (index >= 0) { | |
| 2780 Rectangle bounds = layout.getLineBounds(index); | |
| 2781 if (y >= bounds.y + bounds.height) break; | |
| 2782 index--; | |
| 2783 } | |
| 2784 if (index is -1 && lineIndex > 0) { | |
| 2785 bottomOffset = content.getOffsetAtLine(lineIndex - 1) + content.getLine(lineIndex - 1).length; | |
| 2786 } else { | |
| 2787 bottomOffset = content.getOffsetAtLine(lineIndex) + Math.max(0, layout.getLineOffsets()[index + 1] - 1); | |
| 2788 } | |
| 2789 renderer.disposeTextLayout(layout); | |
| 2790 } else { | |
| 2791 int lineIndex = getBottomIndex(); | |
| 2792 bottomOffset = content.getOffsetAtLine(lineIndex) + content.getLine(lineIndex).length; | |
| 2793 } | |
| 2794 if (caretOffset < bottomOffset) { | |
| 2795 caretOffset = bottomOffset; | |
| 2796 caretAlignment = OFFSET_LEADING; | |
| 2797 showCaret(); | |
| 2798 } | |
| 2799 } | |
| 2800 } | |
| 2801 /** | |
| 2802 * Moves the cursor to the beginning of the first fully visible line. | |
| 2803 */ | |
| 2804 void doPageStart() { | |
| 2805 int topOffset; | |
| 2806 if (wordWrap) { | |
| 2807 int y, lineIndex; | |
| 2808 if (topIndexY > 0) { | |
| 2809 lineIndex = topIndex - 1; | |
| 2810 y = renderer.getLineHeight(lineIndex) - topIndexY; | |
| 2811 } else { | |
| 2812 lineIndex = topIndex; | |
| 2813 y = -topIndexY; | |
| 2814 } | |
| 2815 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2816 int index = 0; | |
| 2817 int lineCount = layout.getLineCount(); | |
| 2818 while (index < lineCount) { | |
| 2819 Rectangle bounds = layout.getLineBounds(index); | |
| 2820 if (y <= bounds.y) break; | |
| 2821 index++; | |
| 2822 } | |
| 2823 if (index is lineCount) { | |
| 2824 topOffset = content.getOffsetAtLine(lineIndex + 1); | |
| 2825 } else { | |
| 2826 topOffset = content.getOffsetAtLine(lineIndex) + layout.getLineOffsets()[index]; | |
| 2827 } | |
| 2828 renderer.disposeTextLayout(layout); | |
| 2829 } else { | |
| 2830 topOffset = content.getOffsetAtLine(topIndex); | |
| 2831 } | |
| 2832 if (caretOffset > topOffset) { | |
| 2833 caretOffset = topOffset; | |
| 2834 caretAlignment = OFFSET_LEADING; | |
| 2835 showCaret(); | |
| 2836 } | |
| 2837 } | |
| 2838 /** | |
| 2839 * Scrolls one page up so that the first line (truncated or whole) | |
| 2840 * of the current page becomes the fully visible last line. | |
| 2841 * The caret is scrolled the same number of lines so that its location | |
| 2842 * relative to the top line remains the same. The exception is the beginning | |
| 2843 * of the text where a full page scroll is not possible. In this case the | |
| 2844 * caret is moved in front of the first character. | |
| 2845 */ | |
| 2846 void doPageUp(bool select, int height) { | |
| 2847 if (isSingleLine()) return; | |
| 2848 int oldHScrollOffset = horizontalScrollOffset; | |
| 2849 int oldColumnX = columnX; | |
| 2850 if (isFixedLineHeight()) { | |
| 2851 int caretLine = getCaretLine(); | |
| 2852 if (caretLine > 0) { | |
| 2853 int lineHeight = renderer.getLineHeight(); | |
| 2854 int lines = (height is -1 ? clientAreaHeight : height) / lineHeight; | |
| 2855 int scrollLines = Math.max(1, Math.min(caretLine, lines)); | |
| 2856 caretLine -= scrollLines; | |
| 2857 caretOffset = getOffsetAtPoint(columnX, getLinePixel(caretLine)); | |
| 2858 if (select) { | |
| 2859 doSelection(ST.COLUMN_PREVIOUS); | |
| 2860 } | |
| 2861 int verticalScrollOffset = getVerticalScrollOffset(); | |
| 2862 int scrollOffset = Math.max(0, verticalScrollOffset - scrollLines * getVerticalIncrement()); | |
| 2863 if (scrollOffset < verticalScrollOffset) { | |
| 2864 scrollVertical(scrollOffset - verticalScrollOffset, true); | |
| 2865 } | |
| 2866 } | |
| 2867 } else { | |
| 2868 int caretLine = getCaretLine(); | |
| 2869 int lineHeight, lineIndex; | |
| 2870 if (height is -1) { | |
| 2871 if (topIndexY is 0) { | |
| 2872 height = clientAreaHeight; | |
| 2873 } else { | |
| 2874 int y; | |
| 2875 if (topIndex > 0) { | |
| 2876 lineIndex = topIndex - 1; | |
| 2877 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2878 height = clientAreaHeight - topIndexY; | |
| 2879 y = lineHeight - topIndexY; | |
| 2880 } else { | |
| 2881 lineIndex = topIndex; | |
| 2882 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2883 height = clientAreaHeight - (lineHeight + topIndexY); | |
| 2884 y = -topIndexY; | |
| 2885 } | |
| 2886 if (wordWrap) { | |
| 2887 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2888 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2889 Rectangle bounds = layout.getLineBounds(i); | |
| 2890 if (bounds.contains(bounds.x, y)) { | |
| 2891 height += lineHeight - (bounds.y + bounds.height); | |
| 2892 break; | |
| 2893 } | |
| 2894 } | |
| 2895 renderer.disposeTextLayout(layout); | |
| 2896 } | |
| 2897 } | |
| 2898 } else { | |
| 2899 lineIndex = getLineIndex(clientAreaHeight - height); | |
| 2900 int topLineY = getLinePixel(lineIndex); | |
| 2901 if (wordWrap) { | |
| 2902 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2903 int y = topLineY; | |
| 2904 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2905 Rectangle bounds = layout.getLineBounds(i); | |
| 2906 if (bounds.contains(bounds.x, y)) { | |
| 2907 height = clientAreaHeight - (topLineY + bounds.y); | |
| 2908 break; | |
| 2909 } | |
| 2910 } | |
| 2911 renderer.disposeTextLayout(layout); | |
| 2912 } else { | |
| 2913 height = clientAreaHeight - topLineY; | |
| 2914 } | |
| 2915 } | |
| 2916 int caretHeight = height; | |
| 2917 if (wordWrap) { | |
| 2918 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2919 int offsetInLine = caretOffset - content.getOffsetAtLine(caretLine); | |
| 2920 lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2921 caretHeight += layout.getBounds().height - layout.getLineBounds(lineIndex).y; | |
| 2922 renderer.disposeTextLayout(layout); | |
| 2923 } | |
| 2924 lineIndex = caretLine; | |
| 2925 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2926 while (caretHeight - lineHeight >= 0 && lineIndex > 0) { | |
| 2927 caretHeight -= lineHeight; | |
| 2928 lineHeight = renderer.getLineHeight(--lineIndex); | |
| 2929 } | |
| 2930 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2931 caretOffset = getOffsetAtPoint(columnX, lineHeight - caretHeight, lineIndex); | |
| 2932 if (select) doSelection(ST.COLUMN_PREVIOUS); | |
| 2933 height = getAvailableHeightAbove(height); | |
| 2934 scrollVertical(-height, true); | |
| 2935 if (height is 0) setCaretLocation(); | |
| 2936 } | |
| 2937 showCaret(); | |
| 2938 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2939 columnX = oldColumnX + hScrollChange; | |
| 2940 } | |
| 2941 /** | |
| 2942 * Updates the selection to extend to the current caret position. | |
| 2943 */ | |
| 2944 void doSelection(int direction) { | |
| 2945 int redrawStart = -1; | |
| 2946 int redrawEnd = -1; | |
| 2947 if (selectionAnchor is -1) { | |
| 2948 selectionAnchor = selection.x; | |
| 2949 } | |
| 2950 if (direction is ST.COLUMN_PREVIOUS) { | |
| 2951 if (caretOffset < selection.x) { | |
| 2952 // grow selection | |
| 2953 redrawEnd = selection.x; | |
| 2954 redrawStart = selection.x = caretOffset; | |
| 2955 // check if selection has reversed direction | |
| 2956 if (selection.y !is selectionAnchor) { | |
| 2957 redrawEnd = selection.y; | |
| 2958 selection.y = selectionAnchor; | |
| 2959 } | |
| 2960 // test whether selection actually changed. Fixes 1G71EO1 | |
| 2961 } else if (selectionAnchor is selection.x && caretOffset < selection.y) { | |
| 2962 // caret moved towards selection anchor (left side of selection). | |
| 2963 // shrink selection | |
| 2964 redrawEnd = selection.y; | |
| 2965 redrawStart = selection.y = caretOffset; | |
| 2966 } | |
| 2967 } else { | |
| 2968 if (caretOffset > selection.y) { | |
| 2969 // grow selection | |
| 2970 redrawStart = selection.y; | |
| 2971 redrawEnd = selection.y = caretOffset; | |
| 2972 // check if selection has reversed direction | |
| 2973 if (selection.x !is selectionAnchor) { | |
| 2974 redrawStart = selection.x; | |
| 2975 selection.x = selectionAnchor; | |
| 2976 } | |
| 2977 // test whether selection actually changed. Fixes 1G71EO1 | |
| 2978 } else if (selectionAnchor is selection.y && caretOffset > selection.x) { | |
| 2979 // caret moved towards selection anchor (right side of selection). | |
| 2980 // shrink selection | |
| 2981 redrawStart = selection.x; | |
| 2982 redrawEnd = selection.x = caretOffset; | |
| 2983 } | |
| 2984 } | |
| 2985 if (redrawStart !is -1 && redrawEnd !is -1) { | |
| 2986 internalRedrawRange(redrawStart, redrawEnd - redrawStart); | |
| 2987 sendSelectionEvent(); | |
| 2988 } | |
| 2989 } | |
| 2990 /** | |
| 2991 * Moves the caret to the next character or to the beginning of the | |
| 2992 * next line if the cursor is at the end of a line. | |
| 2993 */ | |
| 2994 void doSelectionCursorNext() { | |
| 2995 int caretLine = getCaretLine(); | |
| 2996 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2997 int offsetInLine = caretOffset - lineOffset; | |
| 2998 if (offsetInLine < content.getLine(caretLine).length) { | |
| 2999 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 3000 offsetInLine = layout.getNextOffset(offsetInLine, DWT.MOVEMENT_CLUSTER); | |
| 3001 int lineStart = layout.getLineOffsets()[layout.getLineIndex(offsetInLine)]; | |
| 3002 renderer.disposeTextLayout(layout); | |
| 3003 caretOffset = offsetInLine + lineOffset; | |
| 3004 caretAlignment = offsetInLine is lineStart ? OFFSET_LEADING : PREVIOUS_OFFSET_TRAILING; | |
| 3005 showCaret(); | |
| 3006 } else if (caretLine < content.getLineCount() - 1 && !isSingleLine()) { | |
| 3007 caretLine++; | |
| 3008 caretOffset = content.getOffsetAtLine(caretLine); | |
| 3009 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 3010 showCaret(); | |
| 3011 } | |
| 3012 } | |
| 3013 /** | |
| 3014 * Moves the caret to the previous character or to the end of the previous | |
| 3015 * line if the cursor is at the beginning of a line. | |
| 3016 */ | |
| 3017 void doSelectionCursorPrevious() { | |
| 3018 int caretLine = getCaretLine(); | |
| 3019 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 3020 int offsetInLine = caretOffset - lineOffset; | |
| 3021 caretAlignment = OFFSET_LEADING; | |
| 3022 if (offsetInLine > 0) { | |
| 3023 caretOffset = getClusterPrevious(caretOffset, caretLine); | |
| 3024 showCaret(); | |
| 3025 } else if (caretLine > 0) { | |
| 3026 caretLine--; | |
| 3027 lineOffset = content.getOffsetAtLine(caretLine); | |
| 3028 caretOffset = lineOffset + content.getLine(caretLine).length; | |
| 3029 showCaret(); | |
| 3030 } | |
| 3031 } | |
| 3032 /** | |
| 3033 * Moves the caret one line down and to the same character offset relative | |
| 3034 * to the beginning of the line. Moves the caret to the end of the new line | |
| 3035 * if the new line is shorter than the character offset. | |
| 3036 * Moves the caret to the end of the text if the caret already is on the | |
| 3037 * last line. | |
| 3038 * Adjusts the selection according to the caret change. This can either add | |
| 3039 * to or subtract from the old selection, depending on the previous selection | |
| 3040 * direction. | |
| 3041 */ | |
| 3042 void doSelectionLineDown() { | |
| 3043 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3044 doLineDown(true); | |
| 3045 columnX = oldColumnX; | |
| 3046 } | |
| 3047 /** | |
| 3048 * Moves the caret one line up and to the same character offset relative | |
| 3049 * to the beginning of the line. Moves the caret to the end of the new line | |
| 3050 * if the new line is shorter than the character offset. | |
| 3051 * Moves the caret to the beginning of the document if it is already on the | |
| 3052 * first line. | |
| 3053 * Adjusts the selection according to the caret change. This can either add | |
| 3054 * to or subtract from the old selection, depending on the previous selection | |
| 3055 * direction. | |
| 3056 */ | |
| 3057 void doSelectionLineUp() { | |
| 3058 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3059 doLineUp(true); | |
| 3060 columnX = oldColumnX; | |
| 3061 } | |
| 3062 /** | |
| 3063 * Scrolls one page down so that the last line (truncated or whole) | |
| 3064 * of the current page becomes the fully visible top line. | |
| 3065 * <p> | |
| 3066 * The caret is scrolled the same number of lines so that its location | |
| 3067 * relative to the top line remains the same. The exception is the end | |
| 3068 * of the text where a full page scroll is not possible. In this case | |
| 3069 * the caret is moved after the last character. | |
| 3070 * <p></p> | |
| 3071 * Adjusts the selection according to the caret change. This can either add | |
| 3072 * to or subtract from the old selection, depending on the previous selection | |
| 3073 * direction. | |
| 3074 * </p> | |
| 3075 */ | |
| 3076 void doSelectionPageDown(int pixels) { | |
| 3077 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3078 doPageDown(true, pixels); | |
| 3079 columnX = oldColumnX; | |
| 3080 } | |
| 3081 /** | |
| 3082 * Scrolls one page up so that the first line (truncated or whole) | |
| 3083 * of the current page becomes the fully visible last line. | |
| 3084 * <p> | |
| 3085 * The caret is scrolled the same number of lines so that its location | |
| 3086 * relative to the top line remains the same. The exception is the beginning | |
| 3087 * of the text where a full page scroll is not possible. In this case the | |
| 3088 * caret is moved in front of the first character. | |
| 3089 * </p><p> | |
| 3090 * Adjusts the selection according to the caret change. This can either add | |
| 3091 * to or subtract from the old selection, depending on the previous selection | |
| 3092 * direction. | |
| 3093 * </p> | |
| 3094 */ | |
| 3095 void doSelectionPageUp(int pixels) { | |
| 3096 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3097 doPageUp(true, pixels); | |
| 3098 columnX = oldColumnX; | |
| 3099 } | |
| 3100 /** | |
| 3101 * Moves the caret to the end of the next word . | |
| 3102 */ | |
| 3103 void doSelectionWordNext() { | |
| 3104 int newCaretOffset = getWordNext(caretOffset, DWT.MOVEMENT_WORD); | |
| 3105 // Force symmetrical movement for word next and previous. Fixes 14536 | |
| 3106 caretAlignment = OFFSET_LEADING; | |
| 3107 // don't change caret position if in single line mode and the cursor | |
| 3108 // would be on a different line. fixes 5673 | |
| 3109 if (!isSingleLine() || | |
| 3110 content.getLineAtOffset(caretOffset) is content.getLineAtOffset(newCaretOffset)) { | |
| 3111 caretOffset = newCaretOffset; | |
| 3112 showCaret(); | |
| 3113 } | |
| 3114 } | |
| 3115 /** | |
| 3116 * Moves the caret to the start of the previous word. | |
| 3117 */ | |
| 3118 void doSelectionWordPrevious() { | |
| 3119 caretAlignment = OFFSET_LEADING; | |
| 3120 caretOffset = getWordPrevious(caretOffset, DWT.MOVEMENT_WORD); | |
| 3121 int caretLine = content.getLineAtOffset(caretOffset); | |
| 3122 // word previous always comes from bottom line. when | |
| 3123 // wrapping lines, stay on bottom line when on line boundary | |
| 3124 if (wordWrap && caretLine < content.getLineCount() - 1 && | |
| 3125 caretOffset is content.getOffsetAtLine(caretLine + 1)) { | |
| 3126 caretLine++; | |
| 3127 } | |
| 3128 showCaret(); | |
| 3129 } | |
| 3130 /** | |
| 3131 * Moves the caret one character to the left. Do not go to the previous line. | |
| 3132 * When in a bidi locale and at a R2L character the caret is moved to the | |
| 3133 * beginning of the R2L segment (visually right) and then one character to the | |
| 3134 * left (visually left because it's now in a L2R segment). | |
| 3135 */ | |
| 3136 void doVisualPrevious() { | |
| 3137 caretOffset = getClusterPrevious(caretOffset, getCaretLine()); | |
| 3138 showCaret(); | |
| 3139 } | |
| 3140 /** | |
| 3141 * Moves the caret one character to the right. Do not go to the next line. | |
| 3142 * When in a bidi locale and at a R2L character the caret is moved to the | |
| 3143 * end of the R2L segment (visually left) and then one character to the | |
| 3144 * right (visually right because it's now in a L2R segment). | |
| 3145 */ | |
| 3146 void doVisualNext() { | |
| 3147 caretOffset = getClusterNext(caretOffset, getCaretLine()); | |
| 3148 showCaret(); | |
| 3149 } | |
| 3150 /** | |
| 3151 * Moves the caret to the end of the next word. | |
| 3152 * If a selection exists, move the caret to the end of the selection | |
| 3153 * and remove the selection. | |
| 3154 */ | |
| 3155 void doWordNext() { | |
| 3156 if (selection.y - selection.x > 0) { | |
| 3157 caretOffset = selection.y; | |
| 3158 showCaret(); | |
| 3159 } else { | |
| 3160 doSelectionWordNext(); | |
| 3161 } | |
| 3162 } | |
| 3163 /** | |
| 3164 * Moves the caret to the start of the previous word. | |
| 3165 * If a selection exists, move the caret to the start of the selection | |
| 3166 * and remove the selection. | |
| 3167 */ | |
| 3168 void doWordPrevious() { | |
| 3169 if (selection.y - selection.x > 0) { | |
| 3170 caretOffset = selection.x; | |
| 3171 showCaret(); | |
| 3172 } else { | |
| 3173 doSelectionWordPrevious(); | |
| 3174 } | |
| 3175 } | |
| 3176 /** | |
| 3177 * Ends the autoscroll process. | |
| 3178 */ | |
| 3179 void endAutoScroll() { | |
| 3180 autoScrollDirection = DWT.NULL; | |
| 3181 } | |
| 3182 public override Color getBackground() { | |
| 3183 checkWidget(); | |
| 3184 if (background is null) { | |
| 3185 return getDisplay().getSystemColor(DWT.COLOR_LIST_BACKGROUND); | |
| 3186 } | |
| 3187 return background; | |
| 3188 } | |
| 3189 /** | |
| 3190 * Returns the baseline, in pixels. | |
| 3191 * | |
| 3192 * Note: this API should not be used if a StyleRange attribute causes lines to | |
| 3193 * have different heights (i.e. different fonts, rise, etc). | |
| 3194 * | |
| 3195 * @return baseline the baseline | |
| 3196 * @exception DWTException <ul> | |
| 3197 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3198 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3199 * </ul> | |
| 3200 * @since 3.0 | |
| 3201 * | |
| 3202 * @see #getBaseline(int) | |
| 3203 */ | |
| 3204 public int getBaseline() { | |
| 3205 checkWidget(); | |
| 3206 return renderer.getBaseline(); | |
| 3207 } | |
| 3208 /** | |
| 3209 * Returns the baseline at the given offset, in pixels. | |
| 3210 * | |
| 3211 * @param offset the offset | |
| 3212 * | |
| 3213 * @return baseline the baseline | |
| 3214 * | |
| 3215 * @exception DWTException <ul> | |
| 3216 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3217 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3218 * </ul> | |
| 3219 * @exception IllegalArgumentException <ul> | |
| 3220 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3221 * </ul> | |
| 3222 * | |
| 3223 * @since 3.2 | |
| 3224 */ | |
| 3225 public int getBaseline(int offset) { | |
| 3226 checkWidget(); | |
| 3227 if (!(0 <= offset && offset <= content.getCharCount())) { | |
| 3228 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3229 } | |
| 3230 if (isFixedLineHeight()) { | |
| 3231 return renderer.getBaseline(); | |
| 3232 } | |
| 3233 int lineIndex = content.getLineAtOffset(offset); | |
| 3234 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3235 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3236 int lineInParagraph = layout.getLineIndex(Math.min(offset - lineOffset, layout.getText().length)); | |
| 3237 FontMetrics metrics = layout.getLineMetrics(lineInParagraph); | |
| 3238 renderer.disposeTextLayout(layout); | |
| 3239 return metrics.getAscent() + metrics.getLeading(); | |
| 3240 } | |
| 3241 /** | |
| 3242 * Gets the BIDI coloring mode. When true the BIDI text display | |
| 3243 * algorithm is applied to segments of text that are the same | |
| 3244 * color. | |
| 3245 * | |
| 3246 * @return the current coloring mode | |
| 3247 * @exception DWTException <ul> | |
| 3248 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3249 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3250 * </ul> | |
| 3251 * | |
| 3252 * @deprecated use BidiSegmentListener instead. | |
| 3253 */ | |
| 3254 public bool getBidiColoring() { | |
| 3255 checkWidget(); | |
| 3256 return bidiColoring; | |
| 3257 } | |
| 3258 /** | |
| 3259 * Returns the index of the last fully visible line. | |
| 3260 * | |
| 3261 * @return index of the last fully visible line. | |
| 3262 */ | |
| 3263 int getBottomIndex() { | |
| 3264 int bottomIndex; | |
| 3265 if (isFixedLineHeight()) { | |
| 3266 int lineCount = 1; | |
| 3267 int lineHeight = renderer.getLineHeight(); | |
| 3268 if (lineHeight !is 0) { | |
| 3269 // calculate the number of lines that are fully visible | |
| 3270 int partialTopLineHeight = topIndex * lineHeight - getVerticalScrollOffset(); | |
| 3271 lineCount = (clientAreaHeight - partialTopLineHeight) / lineHeight; | |
| 3272 } | |
| 3273 bottomIndex = Math.min(content.getLineCount() - 1, topIndex + Math.max(0, lineCount - 1)); | |
| 3274 } else { | |
| 3275 int clientAreaHeight = this.clientAreaHeight - bottomMargin; | |
| 3276 bottomIndex = getLineIndex(clientAreaHeight); | |
| 3277 if (bottomIndex > 0) { | |
| 3278 int linePixel = getLinePixel(bottomIndex); | |
| 3279 int lineHeight = renderer.getLineHeight(bottomIndex); | |
| 3280 if (linePixel + lineHeight > clientAreaHeight) { | |
| 3281 if (getLinePixel(bottomIndex - 1) >= topMargin) { | |
| 3282 bottomIndex--; | |
| 3283 } | |
| 3284 } | |
| 3285 } | |
| 3286 } | |
| 3287 return bottomIndex; | |
| 3288 } | |
| 3289 Rectangle getBoundsAtOffset(int offset) { | |
| 3290 int lineIndex = content.getLineAtOffset(offset); | |
| 213 | 3291 int lineOffset = content.getOffsetAtLine(lineIndex); |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
3292 String line = content.getLine(lineIndex); |
| 155 | 3293 Rectangle bounds; |
| 3294 if (line.length !is 0) { | |
| 213 | 3295 int offsetInLine = offset - lineOffset; |
| 155 | 3296 TextLayout layout = renderer.getTextLayout(lineIndex); |
| 3297 bounds = layout.getBounds(offsetInLine, offsetInLine); | |
| 3298 renderer.disposeTextLayout(layout); | |
| 3299 } else { | |
| 3300 bounds = new Rectangle (0, 0, 0, renderer.getLineHeight()); | |
| 3301 } | |
| 213 | 3302 if (offset is caretOffset) { |
| 3303 int lineEnd = lineOffset + line.length; | |
| 3304 if (offset is lineEnd && caretAlignment is PREVIOUS_OFFSET_TRAILING) { | |
| 3305 bounds.width += getCaretWidth(); | |
| 3306 } | |
| 3307 } | |
| 155 | 3308 bounds.x += leftMargin - horizontalScrollOffset; |
| 3309 bounds.y += getLinePixel(lineIndex); | |
| 3310 return bounds; | |
| 3311 } | |
| 3312 /** | |
| 3313 * Returns the caret position relative to the start of the text. | |
| 3314 * | |
| 3315 * @return the caret position relative to the start of the text. | |
| 3316 * @exception DWTException <ul> | |
| 3317 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3318 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3319 * </ul> | |
| 3320 */ | |
| 3321 public int getCaretOffset() { | |
| 3322 checkWidget(); | |
| 3323 return caretOffset; | |
| 3324 } | |
| 3325 /** | |
| 3326 * Returns the caret width. | |
| 3327 * | |
| 3328 * @return the caret width, 0 if caret is null. | |
| 3329 */ | |
| 3330 int getCaretWidth() { | |
| 3331 Caret caret = getCaret(); | |
| 3332 if (caret is null) return 0; | |
| 3333 return caret.getSize().x; | |
| 3334 } | |
| 3335 Object getClipboardContent(int clipboardType) { | |
| 3336 TextTransfer plainTextTransfer = TextTransfer.getInstance(); | |
| 3337 return clipboard.getContents(plainTextTransfer, clipboardType); | |
| 3338 } | |
| 3339 int getClusterNext(int offset, int lineIndex) { | |
| 3340 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3341 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3342 offset -= lineOffset; | |
| 3343 offset = layout.getNextOffset(offset, DWT.MOVEMENT_CLUSTER); | |
| 3344 offset += lineOffset; | |
| 3345 renderer.disposeTextLayout(layout); | |
| 3346 return offset; | |
| 3347 } | |
| 3348 int getClusterPrevious(int offset, int lineIndex) { | |
| 3349 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3350 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3351 offset -= lineOffset; | |
| 3352 offset = layout.getPreviousOffset(offset, DWT.MOVEMENT_CLUSTER); | |
| 3353 offset += lineOffset; | |
| 3354 renderer.disposeTextLayout(layout); | |
| 3355 return offset; | |
| 3356 } | |
| 3357 /** | |
| 213 | 3358 * Returns the content implementation that is used for text storage. |
| 3359 * | |
| 3360 * @return content the user defined content implementation that is used for | |
| 3361 * text storage or the default content implementation if no user defined | |
| 3362 * content implementation has been set. | |
| 155 | 3363 * @exception DWTException <ul> |
| 3364 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3365 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3366 * </ul> | |
| 3367 */ | |
| 3368 public StyledTextContent getContent() { | |
| 3369 checkWidget(); | |
| 3370 return content; | |
| 3371 } | |
| 3372 public override bool getDragDetect () { | |
| 3373 checkWidget (); | |
| 3374 return dragDetect_; | |
| 3375 } | |
| 3376 /** | |
| 3377 * Returns whether the widget : double click mouse behavior. | |
| 3378 * | |
| 3379 * @return true if double clicking a word selects the word, false if double clicks | |
| 3380 * have the same effect as regular mouse clicks | |
| 3381 * @exception DWTException <ul> | |
| 3382 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3383 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3384 * </ul> | |
| 3385 */ | |
| 3386 public bool getDoubleClickEnabled() { | |
| 3387 checkWidget(); | |
| 3388 return doubleClickEnabled; | |
| 3389 } | |
| 3390 /** | |
| 3391 * Returns whether the widget content can be edited. | |
| 3392 * | |
| 3393 * @return true if content can be edited, false otherwise | |
| 3394 * @exception DWTException <ul> | |
| 3395 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3396 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3397 * </ul> | |
| 3398 */ | |
| 3399 public bool getEditable() { | |
| 3400 checkWidget(); | |
| 3401 return editable; | |
| 3402 } | |
| 3403 public override Color getForeground() { | |
| 3404 checkWidget(); | |
| 3405 if (foreground is null) { | |
| 3406 return getDisplay().getSystemColor(DWT.COLOR_LIST_FOREGROUND); | |
| 3407 } | |
| 3408 return foreground; | |
| 3409 } | |
| 3410 /** | |
| 3411 * Returns the horizontal scroll increment. | |
| 3412 * | |
| 3413 * @return horizontal scroll increment. | |
| 3414 */ | |
| 3415 int getHorizontalIncrement() { | |
| 3416 return renderer.averageCharWidth; | |
| 3417 } | |
| 3418 /** | |
| 3419 * Returns the horizontal scroll offset relative to the start of the line. | |
| 3420 * | |
| 3421 * @return horizontal scroll offset relative to the start of the line, | |
| 3422 * measured in character increments starting at 0, if > 0 the content is scrolled | |
| 3423 * @exception DWTException <ul> | |
| 3424 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3425 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3426 * </ul> | |
| 3427 */ | |
| 3428 public int getHorizontalIndex() { | |
| 3429 checkWidget(); | |
| 3430 return horizontalScrollOffset / getHorizontalIncrement(); | |
| 3431 } | |
| 3432 /** | |
| 3433 * Returns the horizontal scroll offset relative to the start of the line. | |
| 3434 * | |
| 3435 * @return the horizontal scroll offset relative to the start of the line, | |
| 3436 * measured in pixel starting at 0, if > 0 the content is scrolled. | |
| 3437 * @exception DWTException <ul> | |
| 3438 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3439 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3440 * </ul> | |
| 3441 */ | |
| 3442 public int getHorizontalPixel() { | |
| 3443 checkWidget(); | |
| 3444 return horizontalScrollOffset; | |
| 3445 } | |
| 3446 /** | |
| 3447 * Returns the line indentation of the widget. | |
| 3448 * | |
| 3449 * @return the line indentation | |
| 3450 * | |
| 3451 * @exception DWTException <ul> | |
| 3452 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3453 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3454 * </ul> | |
| 3455 * | |
| 3456 * @see #getLineIndent(int) | |
| 3457 * | |
| 3458 * @since 3.2 | |
| 3459 */ | |
| 3460 public int getIndent() { | |
| 3461 checkWidget(); | |
| 3462 return indent; | |
| 3463 } | |
| 3464 /** | |
| 3465 * Returns whether the widget justifies lines. | |
| 3466 * | |
| 3467 * @return whether lines are justified | |
| 3468 * | |
| 3469 * @exception DWTException <ul> | |
| 3470 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3471 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3472 * </ul> | |
| 3473 * | |
| 3474 * @see #getLineJustify(int) | |
| 3475 * | |
| 3476 * @since 3.2 | |
| 3477 */ | |
| 3478 public bool getJustify() { | |
| 3479 checkWidget(); | |
| 3480 return justify; | |
| 3481 } | |
| 3482 /** | |
| 3483 * Returns the action assigned to the key. | |
| 3484 * Returns DWT.NULL if there is no action associated with the key. | |
| 3485 * | |
| 3486 * @param key a key code defined in DWT.java or a character. | |
| 3487 * Optionally ORd with a state mask. Preferred state masks are one or more of | |
| 3488 * DWT.MOD1, DWT.MOD2, DWT.MOD3, since these masks account for modifier platform | |
| 3489 * differences. However, there may be cases where using the specific state masks | |
| 3490 * (i.e., DWT.CTRL, DWT.SHIFT, DWT.ALT, DWT.COMMAND) makes sense. | |
| 3491 * @return one of the predefined actions defined in ST.java or DWT.NULL | |
| 3492 * if there is no action associated with the key. | |
| 3493 * @exception DWTException <ul> | |
| 3494 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3495 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3496 * </ul> | |
| 3497 */ | |
| 3498 public int getKeyBinding(int key) { | |
| 3499 checkWidget(); | |
| 3500 if( auto p = key in keyActionMap ){ | |
| 3501 return *p; | |
| 3502 } | |
|
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Thomas Graber <d4rkdragon@gmail.com>
parents:
155
diff
changeset
|
3503 return DWT.NULL; |
| 155 | 3504 } |
| 3505 /** | |
| 3506 * Gets the number of characters. | |
| 3507 * | |
| 3508 * @return number of characters in the widget | |
| 3509 * @exception DWTException <ul> | |
| 3510 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3511 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3512 * </ul> | |
| 3513 */ | |
| 3514 public int getCharCount() { | |
| 3515 checkWidget(); | |
| 3516 return content.getCharCount(); | |
| 3517 } | |
| 3518 /** | |
| 213 | 3519 * Returns the line at the given line index without delimiters. |
| 3520 * Index 0 is the first line of the content. When there are not | |
| 3521 * any lines, getLine(0) is a valid call that answers an empty string. | |
| 3522 * <p> | |
| 3523 * | |
| 3524 * @param lineIndex index of the line to return. | |
| 3525 * @return the line text without delimiters | |
| 3526 * | |
| 3527 * @exception DWTException <ul> | |
| 3528 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3529 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3530 * </ul> | |
| 3531 * @exception IllegalArgumentException <ul> | |
| 3532 * <li>ERROR_INVALID_RANGE when the line index is outside the valid range (< 0 or >= getLineCount())</li> | |
| 3533 * </ul> | |
| 3534 * @since 3.4 | |
| 3535 */ | |
| 3536 public String getLine(int lineIndex) { | |
| 3537 checkWidget(); | |
| 3538 if (lineIndex < 0 || | |
| 3539 (lineIndex > 0 && lineIndex >= content.getLineCount())) { | |
| 3540 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3541 } | |
| 3542 return content.getLine(lineIndex); | |
| 3543 } | |
| 3544 /** | |
| 155 | 3545 * Returns the alignment of the line at the given index. |
| 3546 * | |
| 3547 * @param index the index of the line | |
| 3548 * | |
| 3549 * @return the line alignment | |
| 3550 * | |
| 3551 * @exception DWTException <ul> | |
| 3552 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3553 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3554 * </ul> | |
| 3555 * @exception IllegalArgumentException <ul> | |
| 3556 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3557 * </ul> | |
| 3558 * | |
| 3559 * @see #getAlignment() | |
| 3560 * | |
| 3561 * @since 3.2 | |
| 3562 */ | |
| 3563 public int getLineAlignment(int index) { | |
| 3564 checkWidget(); | |
| 3565 if (index < 0 || index > content.getLineCount()) { | |
| 3566 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3567 } | |
| 3568 return renderer.getLineAlignment(index, alignment); | |
| 3569 } | |
| 3570 /** | |
| 3571 * Returns the line at the specified offset in the text | |
| 3572 * where 0 < offset < getCharCount() so that getLineAtOffset(getCharCount()) | |
| 3573 * returns the line of the insert location. | |
| 3574 * | |
| 3575 * @param offset offset relative to the start of the content. | |
| 3576 * 0 <= offset <= getCharCount() | |
| 3577 * @return line at the specified offset in the text | |
| 3578 * @exception DWTException <ul> | |
| 3579 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3580 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3581 * </ul> | |
| 3582 * @exception IllegalArgumentException <ul> | |
| 3583 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3584 * </ul> | |
| 3585 */ | |
| 3586 public int getLineAtOffset(int offset) { | |
| 3587 checkWidget(); | |
| 3588 if (offset < 0 || offset > getCharCount()) { | |
| 3589 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3590 } | |
| 3591 return content.getLineAtOffset(offset); | |
| 3592 } | |
| 3593 /** | |
| 3594 * Returns the background color of the line at the given index. | |
| 3595 * Returns null if a LineBackgroundListener has been set or if no background | |
| 3596 * color has been specified for the line. Should not be called if a | |
| 3597 * LineBackgroundListener has been set since the listener maintains the | |
| 3598 * line background colors. | |
| 3599 * | |
| 3600 * @param index the index of the line | |
| 3601 * @return the background color of the line at the given index. | |
| 3602 * | |
| 3603 * @exception DWTException <ul> | |
| 3604 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3605 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3606 * </ul> | |
| 3607 * @exception IllegalArgumentException <ul> | |
| 3608 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3609 * </ul> | |
| 3610 */ | |
| 3611 public Color getLineBackground(int index) { | |
| 3612 checkWidget(); | |
| 3613 if (index < 0 || index > content.getLineCount()) { | |
| 3614 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3615 } | |
| 3616 return isListening(LineGetBackground) ? null : renderer.getLineBackground(index, null); | |
| 3617 } | |
| 3618 /** | |
| 3619 * Returns the bullet of the line at the given index. | |
| 3620 * | |
| 3621 * @param index the index of the line | |
| 3622 * | |
| 3623 * @return the line bullet | |
| 3624 * | |
| 3625 * @exception DWTException <ul> | |
| 3626 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3627 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3628 * </ul> | |
| 3629 * @exception IllegalArgumentException <ul> | |
| 3630 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3631 * </ul> | |
| 3632 * | |
| 3633 * @since 3.2 | |
| 3634 */ | |
| 3635 public Bullet getLineBullet(int index) { | |
| 3636 checkWidget(); | |
| 3637 if (index < 0 || index > content.getLineCount()) { | |
| 3638 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3639 } | |
| 3640 return isListening(LineGetStyle) ? null : renderer.getLineBullet(index, null); | |
| 3641 } | |
| 3642 /** | |
| 3643 * Returns the line background data for the given line or null if | |
| 3644 * there is none. | |
| 3645 * | |
| 3646 * @param lineOffset offset of the line start relative to the start | |
| 3647 * of the content. | |
| 3648 * @param line line to get line background data for | |
| 3649 * @return line background data for the given line. | |
| 3650 */ | |
|
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parents:
197
diff
changeset
|
3651 StyledTextEvent getLineBackgroundData(int lineOffset, String line) { |
| 155 | 3652 return sendLineEvent(LineGetBackground, lineOffset, line); |
| 3653 } | |
| 3654 /** | |
| 3655 * Gets the number of text lines. | |
| 3656 * | |
| 3657 * @return the number of lines in the widget | |
| 3658 * @exception DWTException <ul> | |
| 3659 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3660 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3661 * </ul> | |
| 3662 */ | |
| 3663 public int getLineCount() { | |
| 3664 checkWidget(); | |
| 3665 return content.getLineCount(); | |
| 3666 } | |
| 3667 /** | |
| 3668 * Returns the number of lines that can be completely displayed in the | |
| 3669 * widget client area. | |
| 3670 * | |
| 3671 * @return number of lines that can be completely displayed in the widget | |
| 3672 * client area. | |
| 3673 */ | |
| 3674 int getLineCountWhole() { | |
| 3675 if (isFixedLineHeight()) { | |
| 3676 int lineHeight = renderer.getLineHeight(); | |
| 3677 return lineHeight !is 0 ? clientAreaHeight / lineHeight : 1; | |
| 3678 } | |
| 3679 return getBottomIndex() - topIndex + 1; | |
| 3680 } | |
| 3681 /** | |
| 3682 * Returns the line delimiter used for entering new lines by key down | |
| 3683 * or paste operation. | |
| 3684 * | |
| 3685 * @return line delimiter used for entering new lines by key down | |
| 3686 * or paste operation. | |
| 3687 * @exception DWTException <ul> | |
| 3688 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3689 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3690 * </ul> | |
| 3691 */ | |
|
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parents:
197
diff
changeset
|
3692 public String getLineDelimiter() { |
| 155 | 3693 checkWidget(); |
| 3694 return content.getLineDelimiter(); | |
| 3695 } | |
| 3696 /** | |
| 3697 * Returns the line height. | |
| 3698 * <p> | |
| 3699 * Note: this API should not be used if a StyleRange attribute causes lines to | |
| 3700 * have different heights (i.e. different fonts, rise, etc). | |
| 3701 * </p> | |
| 3702 * | |
| 3703 * @return line height in pixel. | |
| 3704 * @exception DWTException <ul> | |
| 3705 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3706 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3707 * </ul> | |
| 3708 * @see #getLineHeight(int) | |
| 3709 */ | |
| 3710 public int getLineHeight() { | |
| 3711 checkWidget(); | |
| 3712 return renderer.getLineHeight(); | |
| 3713 } | |
| 3714 /** | |
| 3715 * Returns the line height at the given offset. | |
| 3716 * | |
| 3717 * @param offset the offset | |
| 3718 * | |
| 3719 * @return line height in pixels | |
| 3720 * | |
| 3721 * @exception DWTException <ul> | |
| 3722 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3723 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3724 * </ul> | |
| 3725 * @exception IllegalArgumentException <ul> | |
| 3726 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3727 * </ul> | |
| 3728 * | |
| 3729 * @since 3.2 | |
| 3730 */ | |
| 3731 public int getLineHeight(int offset) { | |
| 3732 checkWidget(); | |
| 3733 if (!(0 <= offset && offset <= content.getCharCount())) { | |
| 3734 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3735 } | |
| 3736 if (isFixedLineHeight()) { | |
| 3737 return renderer.getLineHeight(); | |
| 3738 } | |
| 3739 int lineIndex = content.getLineAtOffset(offset); | |
| 3740 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3741 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3742 int lineInParagraph = layout.getLineIndex(Math.min(offset - lineOffset, layout.getText().length)); | |
| 3743 int height = layout.getLineBounds(lineInParagraph).height; | |
| 3744 renderer.disposeTextLayout(layout); | |
| 3745 return height; | |
| 3746 } | |
| 3747 /** | |
| 3748 * Returns the indentation of the line at the given index. | |
| 3749 * | |
| 3750 * @param index the index of the line | |
| 3751 * | |
| 3752 * @return the line indentation | |
| 3753 * | |
| 3754 * @exception DWTException <ul> | |
| 3755 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3756 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3757 * </ul> | |
| 3758 * @exception IllegalArgumentException <ul> | |
| 3759 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3760 * </ul> | |
| 3761 * | |
| 3762 * @see #getIndent() | |
| 3763 * | |
| 3764 * @since 3.2 | |
| 3765 */ | |
| 3766 public int getLineIndent(int index) { | |
| 3767 checkWidget(); | |
| 3768 if (index < 0 || index > content.getLineCount()) { | |
| 3769 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3770 } | |
| 3771 return isListening(LineGetStyle) ? 0 : renderer.getLineIndent(index, indent); | |
| 3772 } | |
| 3773 /** | |
| 3774 * Returns whether the line at the given index is justified. | |
| 3775 * | |
| 3776 * @param index the index of the line | |
| 3777 * | |
| 3778 * @return whether the line is justified | |
| 3779 * | |
| 3780 * @exception DWTException <ul> | |
| 3781 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3782 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3783 * </ul> | |
| 3784 * @exception IllegalArgumentException <ul> | |
| 3785 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3786 * </ul> | |
| 3787 * | |
| 3788 * @see #getJustify() | |
| 3789 * | |
| 3790 * @since 3.2 | |
| 3791 */ | |
| 3792 public bool getLineJustify(int index) { | |
| 3793 checkWidget(); | |
| 3794 if (index < 0 || index > content.getLineCount()) { | |
| 3795 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3796 } | |
| 3797 return isListening(LineGetStyle) ? false : renderer.getLineJustify(index, justify); | |
| 3798 } | |
| 3799 /** | |
| 3800 * Returns the line spacing of the widget. | |
| 3801 * | |
| 3802 * @return the line spacing | |
| 3803 * | |
| 3804 * @exception DWTException <ul> | |
| 3805 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3806 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3807 * </ul> | |
| 3808 * | |
| 3809 * @since 3.2 | |
| 3810 */ | |
| 3811 public int getLineSpacing() { | |
| 3812 checkWidget(); | |
| 3813 return lineSpacing; | |
| 3814 } | |
| 3815 /** | |
| 3816 * Returns the line style data for the given line or null if there is | |
| 3817 * none. | |
| 3818 * <p> | |
| 3819 * If there is a LineStyleListener but it does not set any styles, | |
| 3820 * the StyledTextEvent.styles field will be initialized to an empty | |
| 3821 * array. | |
| 3822 * </p> | |
| 3823 * | |
| 3824 * @param lineOffset offset of the line start relative to the start of | |
| 3825 * the content. | |
| 3826 * @param line line to get line styles for | |
| 3827 * @return line style data for the given line. Styles may start before | |
| 3828 * line start and end after line end | |
| 3829 */ | |
|
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parents:
197
diff
changeset
|
3830 StyledTextEvent getLineStyleData(int lineOffset, String line) { |
| 155 | 3831 return sendLineEvent(LineGetStyle, lineOffset, line); |
| 3832 } | |
| 3833 /** | |
| 3834 * Returns the top pixel, relative to the client area, of a given line. | |
| 3835 * Clamps out of ranges index. | |
| 3836 * | |
| 3837 * @param lineIndex the line index, the max value is lineCount. If | |
| 3838 * lineIndex is lineCount it returns the bottom pixel of the last line. | |
| 3839 * It means this function can be used to retrieve the bottom pixel of any line. | |
| 3840 * | |
| 246 | 3841 * @return the top pixel of a given line index |
| 3842 * | |
| 155 | 3843 * @since 3.2 |
| 3844 */ | |
| 3845 public int getLinePixel(int lineIndex) { | |
| 3846 checkWidget(); | |
| 3847 int lineCount = content.getLineCount(); | |
| 3848 lineIndex = Math.max(0, Math.min(lineCount, lineIndex)); | |
| 3849 if (isFixedLineHeight()) { | |
| 3850 int lineHeight = renderer.getLineHeight(); | |
| 3851 return lineIndex * lineHeight - getVerticalScrollOffset() + topMargin; | |
| 3852 } | |
| 3853 if (lineIndex is topIndex) return topIndexY + topMargin; | |
| 3854 int height = topIndexY; | |
| 3855 if (lineIndex > topIndex) { | |
| 3856 for (int i = topIndex; i < lineIndex; i++) { | |
| 3857 height += renderer.getLineHeight(i); | |
| 3858 } | |
| 3859 } else { | |
| 3860 for (int i = topIndex - 1; i >= lineIndex; i--) { | |
| 3861 height -= renderer.getLineHeight(i); | |
| 3862 } | |
| 3863 } | |
| 3864 return height + topMargin; | |
| 3865 } | |
| 3866 /** | |
| 3867 * Returns the line index for a y, relative to the client area. | |
| 3868 * The line index returned is always in the range 0..lineCount - 1. | |
| 246 | 3869 * |
| 3870 * @param y the y-coordinate pixel | |
| 3871 * | |
| 3872 * @return the line index for a given y-coordinate pixel | |
| 155 | 3873 * |
| 3874 * @since 3.2 | |
| 3875 */ | |
| 3876 public int getLineIndex(int y) { | |
| 3877 checkWidget(); | |
| 3878 y -= topMargin; | |
| 3879 if (isFixedLineHeight()) { | |
| 3880 int lineHeight = renderer.getLineHeight(); | |
| 3881 int lineIndex = (y + getVerticalScrollOffset()) / lineHeight; | |
| 3882 int lineCount = content.getLineCount(); | |
| 3883 lineIndex = Math.max(0, Math.min(lineCount - 1, lineIndex)); | |
| 3884 return lineIndex; | |
| 3885 } | |
| 3886 if (y is topIndexY) return topIndex; | |
| 3887 int line = topIndex; | |
| 3888 if (y < topIndexY) { | |
| 3889 while (y < topIndexY && line > 0) { | |
| 3890 y += renderer.getLineHeight(--line); | |
| 3891 } | |
| 3892 } else { | |
| 3893 int lineCount = content.getLineCount(); | |
| 3894 int lineHeight = renderer.getLineHeight(line); | |
| 3895 while (y - lineHeight >= topIndexY && line < lineCount - 1) { | |
| 3896 y -= lineHeight; | |
| 3897 lineHeight = renderer.getLineHeight(++line); | |
| 3898 } | |
| 3899 } | |
| 3900 return line; | |
| 3901 } | |
| 3902 /** | |
| 3903 * Returns the x, y location of the upper left corner of the character | |
| 3904 * bounding box at the specified offset in the text. The point is | |
| 3905 * relative to the upper left corner of the widget client area. | |
| 3906 * | |
| 3907 * @param offset offset relative to the start of the content. | |
| 3908 * 0 <= offset <= getCharCount() | |
| 3909 * @return x, y location of the upper left corner of the character | |
| 3910 * bounding box at the specified offset in the text. | |
| 3911 * @exception DWTException <ul> | |
| 3912 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3913 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3914 * </ul> | |
| 3915 * @exception IllegalArgumentException <ul> | |
| 3916 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3917 * </ul> | |
| 3918 */ | |
| 3919 public Point getLocationAtOffset(int offset) { | |
| 3920 checkWidget(); | |
| 3921 if (offset < 0 || offset > getCharCount()) { | |
| 3922 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3923 } | |
| 3924 return getPointAtOffset(offset); | |
| 3925 } | |
| 3926 /** | |
| 3927 * Returns the character offset of the first character of the given line. | |
| 3928 * | |
| 3929 * @param lineIndex index of the line, 0 based relative to the first | |
| 3930 * line in the content. 0 <= lineIndex < getLineCount(), except | |
| 3931 * lineIndex may always be 0 | |
| 3932 * @return offset offset of the first character of the line, relative to | |
| 3933 * the beginning of the document. The first character of the document is | |
| 3934 * at offset 0. | |
| 3935 * When there are not any lines, getOffsetAtLine(0) is a valid call that | |
| 3936 * answers 0. | |
| 3937 * @exception DWTException <ul> | |
| 3938 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3939 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3940 * </ul> | |
| 3941 * @exception IllegalArgumentException <ul> | |
| 213 | 3942 * <li>ERROR_INVALID_RANGE when the line index is outside the valid range (< 0 or >= getLineCount())</li> |
| 155 | 3943 * </ul> |
| 3944 * @since 2.0 | |
| 3945 */ | |
| 3946 public int getOffsetAtLine(int lineIndex) { | |
| 3947 checkWidget(); | |
| 3948 if (lineIndex < 0 || | |
| 3949 (lineIndex > 0 && lineIndex >= content.getLineCount())) { | |
| 3950 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3951 } | |
| 3952 return content.getOffsetAtLine(lineIndex); | |
| 3953 } | |
| 3954 /** | |
| 3955 * Returns the offset of the character at the given location relative | |
| 3956 * to the first character in the document. | |
| 3957 * <p> | |
| 3958 * The return value reflects the character offset that the caret will | |
| 3959 * be placed at if a mouse click occurred at the specified location. | |
| 3960 * If the x coordinate of the location is beyond the center of a character | |
| 3961 * the returned offset will be behind the character. | |
| 3962 * </p> | |
| 3963 * | |
| 3964 * @param point the origin of character bounding box relative to | |
| 3965 * the origin of the widget client area. | |
| 3966 * @return offset of the character at the given location relative | |
| 3967 * to the first character in the document. | |
| 3968 * @exception DWTException <ul> | |
| 3969 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3970 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3971 * </ul> | |
| 3972 * @exception IllegalArgumentException <ul> | |
| 3973 * <li>ERROR_NULL_ARGUMENT when point is null</li> | |
| 3974 * <li>ERROR_INVALID_ARGUMENT when there is no character at the specified location</li> | |
| 3975 * </ul> | |
| 3976 */ | |
| 3977 public int getOffsetAtLocation(Point point) { | |
| 3978 checkWidget(); | |
| 3979 if (point is null) { | |
| 3980 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 3981 } | |
| 213 | 3982 int[] trailing = new int[1]; |
| 3983 int offset = getOffsetAtPoint(point.x, point.y, trailing, true); | |
| 3984 if (offset is -1) { | |
| 155 | 3985 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
| 3986 } | |
| 213 | 3987 return offset + trailing[0]; |
| 155 | 3988 } |
| 3989 int getOffsetAtPoint(int x, int y) { | |
| 3990 int lineIndex = getLineIndex(y); | |
| 3991 y -= getLinePixel(lineIndex); | |
| 3992 return getOffsetAtPoint(x, y, lineIndex); | |
| 3993 } | |
| 3994 /** | |
| 3995 * Returns the offset at the specified x location in the specified line. | |
| 3996 * | |
| 3997 * @param x x location of the mouse location | |
| 3998 * @param line line the mouse location is in | |
| 3999 * @return the offset at the specified x location in the specified line, | |
| 4000 * relative to the beginning of the document | |
| 4001 */ | |
| 4002 int getOffsetAtPoint(int x, int y, int lineIndex) { | |
| 4003 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4004 x += horizontalScrollOffset - leftMargin; | |
| 4005 int[] trailing = new int[1]; | |
| 4006 int offsetInLine = layout.getOffset(x, y, trailing); | |
| 4007 caretAlignment = OFFSET_LEADING; | |
| 4008 if (trailing[0] !is 0) { | |
| 4009 int lineInParagraph = layout.getLineIndex(offsetInLine + trailing[0]); | |
| 4010 int lineStart = layout.getLineOffsets()[lineInParagraph]; | |
| 4011 if (offsetInLine + trailing[0] is lineStart) { | |
| 4012 offsetInLine += trailing[0]; | |
| 4013 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 4014 } else { | |
|
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4015 String line = content.getLine(lineIndex); |
| 155 | 4016 int level; |
| 4017 int offset = offsetInLine; | |
| 4018 while (offset > 0 && tango.text.Unicode.isDigit(line[offset])) offset--; | |
| 4019 if (offset is 0 && tango.text.Unicode.isDigit(line[offset])) { | |
| 4020 level = isMirrored() ? 1 : 0; | |
| 4021 } else { | |
| 4022 level = layout.getLevel(offset) & 0x1; | |
| 4023 } | |
| 4024 offsetInLine += trailing[0]; | |
| 4025 int trailingLevel = layout.getLevel(offsetInLine) & 0x1; | |
| 4026 if ((level ^ trailingLevel) !is 0) { | |
| 4027 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 4028 } else { | |
| 4029 caretAlignment = OFFSET_LEADING; | |
| 4030 } | |
| 4031 } | |
| 4032 } | |
| 4033 renderer.disposeTextLayout(layout); | |
| 4034 return offsetInLine + content.getOffsetAtLine(lineIndex); | |
| 4035 } | |
| 213 | 4036 int getOffsetAtPoint(int x, int y, int[] trailing, bool inTextOnly) { |
| 4037 if (inTextOnly && y + getVerticalScrollOffset() < 0 || x + horizontalScrollOffset < 0) { | |
| 4038 return -1; | |
| 4039 } | |
| 4040 int bottomIndex = getPartialBottomIndex(); | |
| 4041 int height = getLinePixel(bottomIndex + 1); | |
| 4042 if (inTextOnly && y > height) { | |
| 4043 return -1; | |
| 4044 } | |
| 4045 int lineIndex = getLineIndex(y); | |
| 4046 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4047 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4048 x += horizontalScrollOffset - leftMargin ; | |
| 4049 y -= getLinePixel(lineIndex); | |
| 4050 int offset = layout.getOffset(x, y, trailing); | |
| 4051 Rectangle rect = layout.getLineBounds(layout.getLineIndex(offset)); | |
| 4052 renderer.disposeTextLayout(layout); | |
| 4053 if (inTextOnly && !(rect.x <= x && x <= rect.x + rect.width)) { | |
| 4054 return -1; | |
| 4055 } | |
| 4056 return offset + lineOffset; | |
| 4057 } | |
| 155 | 4058 /** |
| 4059 * Returns the orientation of the receiver. | |
| 4060 * | |
| 4061 * @return the orientation style | |
| 4062 * | |
| 4063 * @exception DWTException <ul> | |
| 4064 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4065 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4066 * </ul> | |
| 4067 * | |
| 4068 * @since 2.1.2 | |
| 4069 */ | |
| 4070 public int getOrientation () { | |
| 4071 checkWidget(); | |
| 4072 return isMirrored() ? DWT.RIGHT_TO_LEFT : DWT.LEFT_TO_RIGHT; | |
| 4073 } | |
| 4074 /** | |
| 4075 * Returns the index of the last partially visible line. | |
| 4076 * | |
| 4077 * @return index of the last partially visible line. | |
| 4078 */ | |
| 4079 int getPartialBottomIndex() { | |
| 4080 if (isFixedLineHeight()) { | |
| 4081 int lineHeight = renderer.getLineHeight(); | |
| 4082 int partialLineCount = Compatibility.ceil(clientAreaHeight, lineHeight); | |
| 213 | 4083 return Math.max(0, Math.min(content.getLineCount(), topIndex + partialLineCount) - 1); |
| 155 | 4084 } |
| 4085 return getLineIndex(clientAreaHeight - bottomMargin); | |
| 4086 } | |
| 4087 /** | |
| 4088 * Returns the index of the first partially visible line. | |
| 4089 * | |
| 4090 * @return index of the first partially visible line. | |
| 4091 */ | |
| 4092 int getPartialTopIndex() { | |
| 4093 if (isFixedLineHeight()) { | |
| 4094 int lineHeight = renderer.getLineHeight(); | |
| 4095 return getVerticalScrollOffset() / lineHeight; | |
| 4096 } | |
| 4097 return topIndexY <= 0 ? topIndex : topIndex - 1; | |
| 4098 } | |
| 4099 /** | |
| 4100 * Returns the content in the specified range using the platform line | |
| 4101 * delimiter to separate lines. | |
| 4102 * | |
| 4103 * @param writer the TextWriter to write line text into | |
| 4104 * @return the content in the specified range using the platform line | |
| 4105 * delimiter to separate lines as written by the specified TextWriter. | |
| 4106 */ | |
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4107 String getPlatformDelimitedText(TextWriter writer) { |
| 155 | 4108 int end = writer.getStart() + writer.getCharCount(); |
| 4109 int startLine = content.getLineAtOffset(writer.getStart()); | |
| 4110 int endLine = content.getLineAtOffset(end); | |
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4111 String endLineText = content.getLine(endLine); |
| 155 | 4112 int endLineOffset = content.getOffsetAtLine(endLine); |
| 4113 | |
| 4114 for (int i = startLine; i <= endLine; i++) { | |
| 4115 writer.writeLine(content.getLine(i), content.getOffsetAtLine(i)); | |
| 4116 if (i < endLine) { | |
| 4117 writer.writeLineDelimiter(PlatformLineDelimiter); | |
| 4118 } | |
| 4119 } | |
| 4120 if (end > endLineOffset + endLineText.length) { | |
| 4121 writer.writeLineDelimiter(PlatformLineDelimiter); | |
| 4122 } | |
| 4123 writer.close(); | |
| 4124 return writer.toString(); | |
| 4125 } | |
| 4126 /** | |
| 4127 * Returns all the ranges of text that have an associated StyleRange. | |
| 4128 * Returns an empty array if a LineStyleListener has been set. | |
| 4129 * Should not be called if a LineStyleListener has been set since the | |
| 4130 * listener maintains the styles. | |
| 4131 * <p> | |
| 4132 * The ranges array contains start and length pairs. Each pair refers to | |
| 4133 * the corresponding style in the styles array. For example, the pair | |
| 4134 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 4135 * at styles[n/2] returned by <code>getStyleRanges(int, int, bool)</code>. | |
| 4136 * </p> | |
| 4137 * | |
| 4138 * @return the ranges or an empty array if a LineStyleListener has been set. | |
| 4139 * | |
| 4140 * @exception DWTException <ul> | |
| 4141 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4142 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4143 * </ul> | |
| 4144 * | |
| 4145 * @since 3.2 | |
| 4146 * | |
| 4147 * @see #getStyleRanges(bool) | |
| 4148 */ | |
| 4149 public int[] getRanges() { | |
| 4150 checkWidget(); | |
| 4151 if (!isListening(LineGetStyle)) { | |
| 4152 int[] ranges = renderer.getRanges(0, content.getCharCount()); | |
| 4153 if (ranges !is null) return ranges; | |
| 4154 } | |
| 4155 return new int[0]; | |
| 4156 } | |
| 4157 /** | |
| 4158 * Returns the ranges of text that have an associated StyleRange. | |
| 4159 * Returns an empty array if a LineStyleListener has been set. | |
| 4160 * Should not be called if a LineStyleListener has been set since the | |
| 4161 * listener maintains the styles. | |
| 4162 * <p> | |
| 4163 * The ranges array contains start and length pairs. Each pair refers to | |
| 4164 * the corresponding style in the styles array. For example, the pair | |
| 4165 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 4166 * at styles[n/2] returned by <code>getStyleRanges(int, int, bool)</code>. | |
| 4167 * </p> | |
| 4168 * | |
| 4169 * @param start the start offset of the style ranges to return | |
| 4170 * @param length the number of style ranges to return | |
| 4171 * | |
| 4172 * @return the ranges or an empty array if a LineStyleListener has been set. | |
| 4173 * | |
| 4174 * @exception DWTException <ul> | |
| 4175 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4176 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4177 * </ul> | |
| 4178 * @exception IllegalArgumentException <ul> | |
| 4179 * <li>ERROR_INVALID_RANGE if start or length are outside the widget content</li> | |
| 4180 * </ul> | |
| 4181 * | |
| 4182 * @since 3.2 | |
| 4183 * | |
| 4184 * @see #getStyleRanges(int, int, bool) | |
| 4185 */ | |
| 4186 public int[] getRanges(int start, int length) { | |
| 4187 checkWidget(); | |
| 4188 int contentLength = getCharCount(); | |
| 4189 int end = start + length; | |
| 4190 if (start > end || start < 0 || end > contentLength) { | |
| 4191 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 4192 } | |
| 4193 if (!isListening(LineGetStyle)) { | |
| 4194 int[] ranges = renderer.getRanges(start, length); | |
| 4195 if (ranges !is null) return ranges; | |
| 4196 } | |
| 4197 return new int[0]; | |
| 4198 } | |
| 4199 /** | |
| 4200 * Returns the selection. | |
| 4201 * <p> | |
| 4202 * Text selections are specified in terms of caret positions. In a text | |
| 4203 * widget that contains N characters, there are N+1 caret positions, | |
| 4204 * ranging from 0..N | |
| 4205 * </p> | |
| 4206 * | |
| 4207 * @return start and end of the selection, x is the offset of the first | |
| 4208 * selected character, y is the offset after the last selected character. | |
| 4209 * The selection values returned are visual (i.e., x will always always be | |
| 4210 * <= y). To determine if a selection is right-to-left (RtoL) vs. left-to-right | |
| 4211 * (LtoR), compare the caretOffset to the start and end of the selection | |
| 4212 * (e.g., caretOffset is start of selection implies that the selection is RtoL). | |
| 4213 * @see #getSelectionRange | |
| 4214 * @exception DWTException <ul> | |
| 4215 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4216 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4217 * </ul> | |
| 4218 */ | |
| 4219 public Point getSelection() { | |
| 4220 checkWidget(); | |
| 4221 return new Point(selection.x, selection.y); | |
| 4222 } | |
| 4223 /** | |
| 4224 * Returns the selection. | |
| 4225 * | |
| 4226 * @return start and length of the selection, x is the offset of the | |
| 4227 * first selected character, relative to the first character of the | |
| 4228 * widget content. y is the length of the selection. | |
| 4229 * The selection values returned are visual (i.e., length will always always be | |
| 4230 * positive). To determine if a selection is right-to-left (RtoL) vs. left-to-right | |
| 4231 * (LtoR), compare the caretOffset to the start and end of the selection | |
| 4232 * (e.g., caretOffset is start of selection implies that the selection is RtoL). | |
| 4233 * @exception DWTException <ul> | |
| 4234 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4235 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4236 * </ul> | |
| 4237 */ | |
| 4238 public Point getSelectionRange() { | |
| 4239 checkWidget(); | |
| 4240 return new Point(selection.x, selection.y - selection.x); | |
| 4241 } | |
| 4242 /** | |
| 4243 * Returns the receiver's selection background color. | |
| 4244 * | |
| 4245 * @return the selection background color | |
| 4246 * | |
| 4247 * @exception DWTException <ul> | |
| 4248 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4249 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4250 * </ul> | |
| 4251 * @since 2.1 | |
| 4252 */ | |
| 4253 public Color getSelectionBackground() { | |
| 4254 checkWidget(); | |
| 4255 if (selectionBackground is null) { | |
| 4256 return getDisplay().getSystemColor(DWT.COLOR_LIST_SELECTION); | |
| 4257 } | |
| 4258 return selectionBackground; | |
| 4259 } | |
| 4260 /** | |
| 4261 * Gets the number of selected characters. | |
| 4262 * | |
| 4263 * @return the number of selected characters. | |
| 4264 * @exception DWTException <ul> | |
| 4265 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4266 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4267 * </ul> | |
| 4268 */ | |
| 4269 public int getSelectionCount() { | |
| 4270 checkWidget(); | |
| 4271 return getSelectionRange().y; | |
| 4272 } | |
| 4273 /** | |
| 4274 * Returns the receiver's selection foreground color. | |
| 4275 * | |
| 4276 * @return the selection foreground color | |
| 4277 * | |
| 4278 * @exception DWTException <ul> | |
| 4279 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4280 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4281 * </ul> | |
| 4282 * @since 2.1 | |
| 4283 */ | |
| 4284 public Color getSelectionForeground() { | |
| 4285 checkWidget(); | |
| 4286 if (selectionForeground is null) { | |
| 4287 return getDisplay().getSystemColor(DWT.COLOR_LIST_SELECTION_TEXT); | |
| 4288 } | |
| 4289 return selectionForeground; | |
| 4290 } | |
| 4291 /** | |
| 4292 * Returns the selected text. | |
| 4293 * | |
| 4294 * @return selected text, or an empty String if there is no selection. | |
| 4295 * @exception DWTException <ul> | |
| 4296 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4297 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4298 * </ul> | |
| 4299 */ | |
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4300 public String getSelectionText() { |
| 155 | 4301 checkWidget(); |
| 4302 return content.getTextRange(selection.x, selection.y - selection.x); | |
| 4303 } | |
| 4304 public override int getStyle() { | |
| 4305 int style = super.getStyle(); | |
| 4306 style &= ~(DWT.LEFT_TO_RIGHT | DWT.RIGHT_TO_LEFT | DWT.MIRRORED); | |
| 4307 if (isMirrored()) { | |
| 4308 style |= DWT.RIGHT_TO_LEFT | DWT.MIRRORED; | |
| 4309 } else { | |
| 4310 style |= DWT.LEFT_TO_RIGHT; | |
| 4311 } | |
| 4312 return style; | |
| 4313 } | |
| 4314 | |
| 4315 /** | |
| 4316 * Returns the text segments that should be treated as if they | |
| 4317 * had a different direction than the surrounding text. | |
| 4318 * | |
| 4319 * @param lineOffset offset of the first character in the line. | |
| 4320 * 0 based from the beginning of the document. | |
| 4321 * @param line text of the line to specify bidi segments for | |
| 4322 * @return text segments that should be treated as if they had a | |
| 4323 * different direction than the surrounding text. Only the start | |
| 4324 * index of a segment is specified, relative to the start of the | |
| 4325 * line. Always starts with 0 and ends with the line length. | |
| 4326 * @exception IllegalArgumentException <ul> | |
| 4327 * <li>ERROR_INVALID_ARGUMENT - if the segment indices returned | |
| 4328 * by the listener do not start with 0, are not in ascending order, | |
| 4329 * exceed the line length or have duplicates</li> | |
| 4330 * </ul> | |
| 4331 */ | |
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4332 int [] getBidiSegments(int lineOffset, String line) { |
| 155 | 4333 if (!isBidi()) return null; |
| 4334 if (!isListening(LineGetSegments)) { | |
| 4335 return getBidiSegmentsCompatibility(line, lineOffset); | |
| 4336 } | |
| 4337 StyledTextEvent event = sendLineEvent(LineGetSegments, lineOffset, line); | |
| 4338 int lineLength = line.length; | |
| 4339 int[] segments; | |
| 4340 if (event is null || event.segments is null || event.segments.length is 0) { | |
| 4341 segments = [0, lineLength]; | |
| 4342 } else { | |
| 4343 int segmentCount = event.segments.length; | |
| 4344 | |
| 4345 // test segment index consistency | |
| 4346 if (event.segments[0] !is 0) { | |
| 4347 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 4348 } | |
| 4349 for (int i = 1; i < segmentCount; i++) { | |
| 4350 if (event.segments[i] <= event.segments[i - 1] || event.segments[i] > lineLength) { | |
| 4351 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 4352 } | |
| 4353 } | |
| 4354 // ensure that last segment index is line end offset | |
| 4355 if (event.segments[segmentCount - 1] !is lineLength) { | |
| 4356 segments = new int[segmentCount + 1]; | |
| 4357 System.arraycopy(event.segments, 0, segments, 0, segmentCount); | |
| 4358 segments[segmentCount] = lineLength; | |
| 4359 } else { | |
| 4360 segments = event.segments; | |
| 4361 } | |
| 4362 } | |
| 4363 return segments; | |
| 4364 } | |
| 4365 /** | |
| 4366 * @see #getBidiSegments | |
| 4367 * Supports deprecated setBidiColoring API. Remove when API is removed. | |
| 4368 */ | |
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4369 int [] getBidiSegmentsCompatibility(String line, int lineOffset) { |
| 155 | 4370 int lineLength = line.length; |
| 4371 if (!bidiColoring) { | |
| 4372 return [0, lineLength]; | |
| 4373 } | |
| 4374 StyleRange [] styles = null; | |
| 4375 StyledTextEvent event = getLineStyleData(lineOffset, line); | |
| 4376 if (event !is null) { | |
| 4377 styles = event.styles; | |
| 4378 } else { | |
| 4379 styles = renderer.getStyleRanges(lineOffset, lineLength, true); | |
| 4380 } | |
| 4381 if (styles is null || styles.length is 0) { | |
| 4382 return [0, lineLength]; | |
| 4383 } | |
| 4384 int k=0, count = 1; | |
| 4385 while (k < styles.length && styles[k].start is 0 && styles[k].length is lineLength) { | |
| 4386 k++; | |
| 4387 } | |
| 4388 int[] offsets = new int[(styles.length - k) * 2 + 2]; | |
| 4389 for (int i = k; i < styles.length; i++) { | |
| 4390 StyleRange style = styles[i]; | |
| 4391 int styleLineStart = Math.max(style.start - lineOffset, 0); | |
| 4392 int styleLineEnd = Math.max(style.start + style.length - lineOffset, styleLineStart); | |
| 4393 styleLineEnd = Math.min (styleLineEnd, line.length ); | |
| 4394 if (i > 0 && count > 1 && | |
| 4395 ((styleLineStart >= offsets[count-2] && styleLineStart <= offsets[count-1]) || | |
| 4396 (styleLineEnd >= offsets[count-2] && styleLineEnd <= offsets[count-1])) && | |
| 4397 style.similarTo(styles[i-1])) { | |
| 4398 offsets[count-2] = Math.min(offsets[count-2], styleLineStart); | |
| 4399 offsets[count-1] = Math.max(offsets[count-1], styleLineEnd); | |
| 4400 } else { | |
| 4401 if (styleLineStart > offsets[count - 1]) { | |
| 4402 offsets[count] = styleLineStart; | |
| 4403 count++; | |
| 4404 } | |
| 4405 offsets[count] = styleLineEnd; | |
| 4406 count++; | |
| 4407 } | |
| 4408 } | |
| 4409 // add offset for last non-colored segment in line, if any | |
| 4410 if (lineLength > offsets[count-1]) { | |
| 4411 offsets [count] = lineLength; | |
| 4412 count++; | |
| 4413 } | |
| 4414 if (count is offsets.length) { | |
| 4415 return offsets; | |
| 4416 } | |
| 4417 int [] result = new int [count]; | |
| 4418 System.arraycopy (offsets, 0, result, 0, count); | |
| 4419 return result; | |
| 4420 } | |
| 4421 /** | |
| 4422 * Returns the style range at the given offset. | |
| 4423 * <p> | |
| 4424 * Returns null if a LineStyleListener has been set or if a style is not set | |
| 4425 * for the offset. | |
| 4426 * Should not be called if a LineStyleListener has been set since the | |
| 4427 * listener maintains the styles. | |
| 4428 * </p> | |
| 4429 * | |
| 4430 * @param offset the offset to return the style for. | |
| 4431 * 0 <= offset < getCharCount() must be true. | |
| 4432 * @return a StyleRange with start is offset and length is 1, indicating | |
| 4433 * the style at the given offset. null if a LineStyleListener has been set | |
| 4434 * or if a style is not set for the given offset. | |
| 4435 * @exception DWTException <ul> | |
| 4436 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4437 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4438 * </ul> | |
| 4439 * @exception IllegalArgumentException <ul> | |
| 4440 * <li>ERROR_INVALID_ARGUMENT when the offset is invalid</li> | |
| 4441 * </ul> | |
| 4442 */ | |
| 4443 public StyleRange getStyleRangeAtOffset(int offset) { | |
| 4444 checkWidget(); | |
| 4445 if (offset < 0 || offset >= getCharCount()) { | |
| 4446 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 4447 } | |
| 4448 if (!isListening(LineGetStyle)) { | |
| 4449 StyleRange[] ranges = renderer.getStyleRanges(offset, 1, true); | |
| 4450 if (ranges !is null) return ranges[0]; | |
| 4451 } | |
| 4452 return null; | |
| 4453 } | |
| 4454 /** | |
| 4455 * Returns the styles. | |
| 4456 * <p> | |
| 4457 * Returns an empty array if a LineStyleListener has been set. | |
| 4458 * Should not be called if a LineStyleListener has been set since the | |
| 4459 * listener maintains the styles. | |
| 4460 * <p></p> | |
| 4461 * Note: Because a StyleRange includes the start and length, the | |
| 4462 * same instance cannot occur multiple times in the array of styles. | |
| 4463 * If the same style attributes, such as font and color, occur in | |
| 4464 * multiple StyleRanges, <code>getStyleRanges(bool)</code> | |
| 4465 * can be used to get the styles without the ranges. | |
| 4466 * </p> | |
| 4467 * | |
| 4468 * @return the styles or an empty array if a LineStyleListener has been set. | |
| 4469 * | |
| 4470 * @exception DWTException <ul> | |
| 4471 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4472 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4473 * </ul> | |
| 4474 * | |
| 4475 * @see #getStyleRanges(bool) | |
| 4476 */ | |
| 4477 public StyleRange[] getStyleRanges() { | |
| 4478 checkWidget(); | |
| 4479 return getStyleRanges(0, content.getCharCount(), true); | |
| 4480 } | |
| 4481 /** | |
| 4482 * Returns the styles. | |
| 4483 * <p> | |
| 4484 * Returns an empty array if a LineStyleListener has been set. | |
| 4485 * Should not be called if a LineStyleListener has been set since the | |
| 4486 * listener maintains the styles. | |
| 4487 * </p><p> | |
| 4488 * Note: When <code>includeRanges</code> is true, the start and length | |
| 4489 * fields of each StyleRange will be valid, however the StyleRange | |
| 4490 * objects may need to be cloned. When <code>includeRanges</code> is | |
| 4491 * false, <code>getRanges(int, int)</code> can be used to get the | |
| 4492 * associated ranges. | |
| 4493 * </p> | |
| 4494 * | |
| 4495 * @param includeRanges whether the start and length field of the StyleRanges should be set. | |
| 4496 * | |
| 4497 * @return the styles or an empty array if a LineStyleListener has been set. | |
| 4498 * | |
| 4499 * @exception DWTException <ul> | |
| 4500 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4501 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4502 * </ul> | |
| 4503 * | |
| 4504 * @since 3.2 | |
| 4505 * | |
| 4506 * @see #getRanges(int, int) | |
| 4507 * @see #setStyleRanges(int[], StyleRange[]) | |
| 4508 */ | |
| 4509 public StyleRange[] getStyleRanges(bool includeRanges) { | |
| 4510 checkWidget(); | |
| 4511 return getStyleRanges(0, content.getCharCount(), includeRanges); | |
| 4512 } | |
| 4513 /** | |
| 4514 * Returns the styles for the given text range. | |
| 4515 * <p> | |
| 4516 * Returns an empty array if a LineStyleListener has been set. | |
| 4517 * Should not be called if a LineStyleListener has been set since the | |
| 4518 * listener maintains the styles. | |
| 4519 * </p><p> | |
| 4520 * Note: Because the StyleRange includes the start and length, the | |
| 4521 * same instance cannot occur multiple times in the array of styles. | |
| 4522 * If the same style attributes, such as font and color, occur in | |
| 4523 * multiple StyleRanges, <code>getStyleRanges(int, int, bool)</code> | |
| 4524 * can be used to get the styles without the ranges. | |
| 4525 * </p> | |
| 4526 * @param start the start offset of the style ranges to return | |
| 4527 * @param length the number of style ranges to return | |
| 4528 * | |
| 4529 * @return the styles or an empty array if a LineStyleListener has | |
| 4530 * been set. The returned styles will reflect the given range. The first | |
| 4531 * returned <code>StyleRange</code> will have a starting offset >= start | |
| 4532 * and the last returned <code>StyleRange</code> will have an ending | |
| 4533 * offset <= start + length - 1 | |
| 4534 * | |
| 4535 * @exception DWTException <ul> | |
| 4536 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4537 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4538 * </ul> | |
| 4539 * @exception IllegalArgumentException <ul> | |
| 4540 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4541 * </ul> | |
| 4542 * | |
| 4543 * @see #getStyleRanges(int, int, bool) | |
| 4544 * | |
| 4545 * @since 3.0 | |
| 4546 */ | |
| 4547 public StyleRange[] getStyleRanges(int start, int length) { | |
| 4548 checkWidget(); | |
| 4549 return getStyleRanges(start, length, true); | |
| 4550 } | |
| 4551 /** | |
| 4552 * Returns the styles for the given text range. | |
| 4553 * <p> | |
| 4554 * Returns an empty array if a LineStyleListener has been set. | |
| 4555 * Should not be called if a LineStyleListener has been set since the | |
| 4556 * listener maintains the styles. | |
| 4557 * </p><p> | |
| 4558 * Note: When <code>includeRanges</code> is true, the start and length | |
| 4559 * fields of each StyleRange will be valid, however the StyleRange | |
| 4560 * objects may need to be cloned. When <code>includeRanges</code> is | |
| 4561 * false, <code>getRanges(int, int)</code> can be used to get the | |
| 4562 * associated ranges. | |
| 4563 * </p> | |
| 4564 * | |
| 4565 * @param start the start offset of the style ranges to return | |
| 4566 * @param length the number of style ranges to return | |
| 4567 * @param includeRanges whether the start and length field of the StyleRanges should be set. | |
| 4568 * | |
| 4569 * @return the styles or an empty array if a LineStyleListener has | |
| 4570 * been set. The returned styles will reflect the given range. The first | |
| 4571 * returned <code>StyleRange</code> will have a starting offset >= start | |
| 4572 * and the last returned <code>StyleRange</code> will have an ending | |
| 4573 * offset <= start + length - 1 | |
| 4574 * | |
| 4575 * @exception DWTException <ul> | |
| 4576 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4577 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4578 * </ul> | |
| 4579 * @exception IllegalArgumentException <ul> | |
| 4580 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4581 * </ul> | |
| 4582 * | |
| 4583 * @since 3.2 | |
| 4584 * | |
| 4585 * @see #getRanges(int, int) | |
| 4586 * @see #setStyleRanges(int[], StyleRange[]) | |
| 4587 */ | |
| 4588 public StyleRange[] getStyleRanges(int start, int length, bool includeRanges) { | |
| 4589 checkWidget(); | |
| 4590 int contentLength = getCharCount(); | |
| 4591 int end = start + length; | |
| 4592 if (start > end || start < 0 || end > contentLength) { | |
| 4593 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 4594 } | |
| 4595 if (!isListening(LineGetStyle)) { | |
| 4596 StyleRange[] ranges = renderer.getStyleRanges(start, length, includeRanges); | |
| 4597 if (ranges !is null) return ranges; | |
| 4598 } | |
| 4599 return new StyleRange[0]; | |
| 4600 } | |
| 4601 /** | |
| 4602 * Returns the tab width measured in characters. | |
| 4603 * | |
| 4604 * @return tab width measured in characters | |
| 4605 * @exception DWTException <ul> | |
| 4606 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4607 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4608 * </ul> | |
| 4609 */ | |
| 4610 public int getTabs() { | |
| 4611 checkWidget(); | |
| 4612 return tabLength; | |
| 4613 } | |
| 4614 /** | |
| 4615 * Returns a copy of the widget content. | |
| 4616 * | |
| 4617 * @return copy of the widget content | |
| 4618 * @exception DWTException <ul> | |
| 4619 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4620 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4621 * </ul> | |
| 4622 */ | |
|
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4623 public String getText() { |
| 155 | 4624 checkWidget(); |
| 4625 return content.getTextRange(0, getCharCount()); | |
| 4626 } | |
| 4627 /** | |
| 4628 * Returns the widget content between the two offsets. | |
| 4629 * | |
|
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4630 * @param start offset of the first character in the returned String |
| 155 | 4631 * @param end offset of the last character in the returned String |
| 4632 * @return widget content starting at start and ending at end | |
| 4633 * @see #getTextRange(int,int) | |
| 4634 * @exception DWTException <ul> | |
| 4635 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4636 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4637 * </ul> | |
| 4638 * @exception IllegalArgumentException <ul> | |
| 4639 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4640 * </ul> | |
| 4641 */ | |
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4642 public String getText(int start, int end) { |
| 155 | 4643 checkWidget(); |
| 4644 int contentLength = getCharCount(); | |
| 4645 if (start < 0 || start >= contentLength || end < 0 || end >= contentLength || start > end) { | |
| 4646 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 4647 } | |
| 4648 return content.getTextRange(start, end - start + 1); | |
| 4649 } | |
| 4650 /** | |
| 4651 * Returns the smallest bounding rectangle that includes the characters between two offsets. | |
| 4652 * | |
| 4653 * @param start offset of the first character included in the bounding box | |
| 4654 * @param end offset of the last character included in the bounding box | |
| 4655 * @return bounding box of the text between start and end | |
| 4656 * @exception DWTException <ul> | |
| 4657 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4658 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4659 * </ul> | |
| 4660 * @exception IllegalArgumentException <ul> | |
| 4661 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4662 * </ul> | |
| 4663 * @since 3.1 | |
| 4664 */ | |
| 4665 public Rectangle getTextBounds(int start, int end) { | |
| 4666 checkWidget(); | |
| 4667 int contentLength = getCharCount(); | |
| 4668 if (start < 0 || start >= contentLength || end < 0 || end >= contentLength || start > end) { | |
| 4669 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 4670 } | |
| 4671 int lineStart = content.getLineAtOffset(start); | |
| 4672 int lineEnd = content.getLineAtOffset(end); | |
| 4673 Rectangle rect; | |
| 4674 int y = getLinePixel(lineStart); | |
| 4675 int height = 0; | |
| 4676 int left = 0x7fffffff, right = 0; | |
| 4677 for (int i = lineStart; i <= lineEnd; i++) { | |
| 4678 int lineOffset = content.getOffsetAtLine(i); | |
| 4679 TextLayout layout = renderer.getTextLayout(i); | |
| 213 | 4680 int length = layout.getText().length; |
| 4681 if (length > 0) { | |
| 4682 if (i is lineStart) { | |
| 4683 if (i is lineEnd) { | |
| 4684 rect = layout.getBounds(start - lineOffset, end - lineOffset); | |
| 4685 } else { | |
| 4686 rect = layout.getBounds(start - lineOffset, length); | |
| 4687 } | |
| 4688 y += rect.y; | |
| 155 | 4689 } else if (i is lineEnd) { |
| 4690 rect = layout.getBounds(0, end - lineOffset); | |
| 4691 } else { | |
| 4692 rect = layout.getBounds(); | |
| 4693 } | |
| 4694 left = Math.min(left, rect.x); | |
| 4695 right = Math.max(right, rect.x + rect.width); | |
| 4696 height += rect.height; | |
| 4697 } else { | |
| 4698 height += renderer.getLineHeight(); | |
| 4699 } | |
| 4700 renderer.disposeTextLayout(layout); | |
| 4701 } | |
| 4702 rect = new Rectangle (left, y, right-left, height); | |
| 4703 rect.x += leftMargin - horizontalScrollOffset; | |
| 4704 return rect; | |
| 4705 } | |
| 4706 /** | |
| 4707 * Returns the widget content starting at start for length characters. | |
| 4708 * | |
| 4709 * @param start offset of the first character in the returned String | |
| 4710 * @param length number of characters to return | |
| 4711 * @return widget content starting at start and extending length characters. | |
| 4712 * @exception DWTException <ul> | |
| 4713 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4714 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4715 * </ul> | |
| 4716 * @exception IllegalArgumentException <ul> | |
| 4717 * <li>ERROR_INVALID_RANGE when start and/or length are outside the widget content</li> | |
| 4718 * </ul> | |
| 4719 */ | |
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4720 public String getTextRange(int start, int length) { |
| 155 | 4721 checkWidget(); |
| 4722 int contentLength = getCharCount(); | |
| 4723 int end = start + length; | |
| 4724 if (start > end || start < 0 || end > contentLength) { | |
| 4725 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 4726 } | |
| 4727 return content.getTextRange(start, length); | |
| 4728 } | |
| 4729 /** | |
| 4730 * Returns the maximum number of characters that the receiver is capable of holding. | |
| 4731 * | |
| 4732 * @return the text limit | |
| 4733 * | |
| 4734 * @exception DWTException <ul> | |
| 4735 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4736 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4737 * </ul> | |
| 4738 */ | |
| 4739 public int getTextLimit() { | |
| 4740 checkWidget(); | |
| 4741 return textLimit; | |
| 4742 } | |
| 4743 /** | |
| 4744 * Gets the top index. | |
| 4745 * <p> | |
| 4746 * The top index is the index of the fully visible line that is currently | |
| 4747 * at the top of the widget or the topmost partially visible line if no line is fully visible. | |
| 4748 * The top index changes when the widget is scrolled. Indexing is zero based. | |
| 4749 * </p> | |
| 4750 * | |
| 4751 * @return the index of the top line | |
| 4752 * @exception DWTException <ul> | |
| 4753 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4754 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4755 * </ul> | |
| 4756 */ | |
| 4757 public int getTopIndex() { | |
| 4758 checkWidget(); | |
| 4759 return topIndex; | |
| 4760 } | |
| 4761 /** | |
| 4762 * Gets the top pixel. | |
| 4763 * <p> | |
| 4764 * The top pixel is the pixel position of the line that is | |
| 4765 * currently at the top of the widget. The text widget can be scrolled by pixels | |
| 4766 * by dragging the scroll thumb so that a partial line may be displayed at the top | |
| 4767 * the widget. The top pixel changes when the widget is scrolled. The top pixel | |
| 4768 * does not include the widget trimming. | |
| 4769 * </p> | |
| 4770 * | |
| 4771 * @return pixel position of the top line | |
| 4772 * @exception DWTException <ul> | |
| 4773 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4774 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4775 * </ul> | |
| 4776 */ | |
| 4777 public int getTopPixel() { | |
| 4778 checkWidget(); | |
| 4779 return getVerticalScrollOffset(); | |
| 4780 } | |
| 4781 /** | |
| 4782 * Returns the vertical scroll increment. | |
| 4783 * | |
| 4784 * @return vertical scroll increment. | |
| 4785 */ | |
| 4786 int getVerticalIncrement() { | |
| 4787 return renderer.getLineHeight(); | |
| 4788 } | |
| 4789 int getVerticalScrollOffset() { | |
| 4790 if (verticalScrollOffset is -1) { | |
| 4791 renderer.calculate(0, topIndex); | |
| 4792 int height = 0; | |
| 4793 for (int i = 0; i < topIndex; i++) { | |
| 4794 height += renderer.getLineHeight(i); | |
| 4795 } | |
| 4796 height -= topIndexY; | |
| 4797 verticalScrollOffset = height; | |
| 4798 } | |
| 4799 return verticalScrollOffset; | |
| 4800 } | |
| 4801 int getVisualLineIndex(TextLayout layout, int offsetInLine) { | |
| 4802 int lineIndex = layout.getLineIndex(offsetInLine); | |
| 4803 int[] offsets = layout.getLineOffsets(); | |
| 4804 if (lineIndex !is 0 && offsetInLine is offsets[lineIndex]) { | |
| 4805 int lineY = layout.getLineBounds(lineIndex).y; | |
| 4806 int caretY = getCaret().getLocation().y - topMargin - getLinePixel(getCaretLine()); | |
| 4807 if (lineY > caretY) lineIndex--; | |
| 4808 } | |
| 4809 return lineIndex; | |
| 4810 } | |
| 4811 int getCaretDirection() { | |
| 4812 if (!isBidiCaret()) return DWT.DEFAULT; | |
| 213 | 4813 if (ime.getCompositionOffset() !is -1) return DWT.DEFAULT; |
| 155 | 4814 if (!updateCaretDirection && caretDirection !is DWT.NULL) return caretDirection; |
| 4815 updateCaretDirection = false; | |
| 4816 int caretLine = getCaretLine(); | |
| 4817 int lineOffset = content.getOffsetAtLine(caretLine); | |
|
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4818 String line = content.getLine(caretLine); |
| 155 | 4819 int offset = caretOffset - lineOffset; |
| 4820 int lineLength = line.length; | |
| 4821 if (lineLength is 0) return isMirrored() ? DWT.RIGHT : DWT.LEFT; | |
| 4822 if (caretAlignment is PREVIOUS_OFFSET_TRAILING && offset > 0) offset--; | |
| 4823 if (offset is lineLength && offset > 0) offset--; | |
| 4824 while (offset > 0 && tango.text.Unicode.isDigit(line[offset])) offset--; | |
| 4825 if (offset is 0 && tango.text.Unicode.isDigit(line[offset])) { | |
| 4826 return isMirrored() ? DWT.RIGHT : DWT.LEFT; | |
| 4827 } | |
| 4828 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 4829 int level = layout.getLevel(offset); | |
| 4830 renderer.disposeTextLayout(layout); | |
| 4831 return ((level & 1) !is 0) ? DWT.RIGHT : DWT.LEFT; | |
| 4832 } | |
| 4833 /* | |
| 4834 * Returns the index of the line the caret is on. | |
| 4835 */ | |
| 4836 int getCaretLine() { | |
| 4837 return content.getLineAtOffset(caretOffset); | |
| 4838 } | |
| 4839 int getWrapWidth () { | |
| 4840 if (wordWrap && !isSingleLine()) { | |
| 213 | 4841 int width = clientAreaWidth - leftMargin - rightMargin - getCaretWidth(); |
| 155 | 4842 return width > 0 ? width : 1; |
| 4843 } | |
| 4844 return -1; | |
| 4845 } | |
| 4846 int getWordNext (int offset, int movement) { | |
| 4847 int newOffset, lineOffset; | |
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4848 String lineText; |
| 155 | 4849 if (offset >= getCharCount()) { |
| 4850 newOffset = offset; | |
| 4851 int lineIndex = content.getLineCount() - 1; | |
| 4852 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4853 lineText = content.getLine(lineIndex); | |
| 4854 } else { | |
| 4855 int lineIndex = content.getLineAtOffset(offset); | |
| 4856 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4857 lineText = content.getLine(lineIndex); | |
| 4858 int lineLength = lineText.length; | |
| 4859 if (offset is lineOffset + lineLength) { | |
| 4860 newOffset = content.getOffsetAtLine(lineIndex + 1); | |
| 4861 } else { | |
| 4862 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4863 newOffset = lineOffset + layout.getNextOffset(offset - lineOffset, movement); | |
| 4864 renderer.disposeTextLayout(layout); | |
| 4865 } | |
| 4866 } | |
| 4867 return sendWordBoundaryEvent(WordNext, movement, offset, newOffset, lineText, lineOffset); | |
| 4868 } | |
| 4869 int getWordPrevious(int offset, int movement) { | |
| 4870 int newOffset, lineOffset; | |
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4871 String lineText; |
| 155 | 4872 if (offset <= 0) { |
| 4873 newOffset = 0; | |
| 4874 int lineIndex = content.getLineAtOffset(newOffset); | |
| 4875 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4876 lineText = content.getLine(lineIndex); | |
| 4877 } else { | |
| 4878 int lineIndex = content.getLineAtOffset(offset); | |
| 4879 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4880 lineText = content.getLine(lineIndex); | |
| 4881 if (offset is lineOffset) { | |
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4882 String nextLineText = content.getLine(lineIndex - 1); |
| 155 | 4883 int nextLineOffset = content.getOffsetAtLine(lineIndex - 1); |
| 4884 newOffset = nextLineOffset + nextLineText.length; | |
| 4885 } else { | |
| 4886 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4887 newOffset = lineOffset + layout.getPreviousOffset(offset - lineOffset, movement); | |
| 4888 renderer.disposeTextLayout(layout); | |
| 4889 } | |
| 4890 } | |
| 4891 return sendWordBoundaryEvent(WordPrevious, movement, offset, newOffset, lineText, lineOffset); | |
| 4892 } | |
| 4893 /** | |
| 4894 * Returns whether the widget wraps lines. | |
| 4895 * | |
| 4896 * @return true if widget wraps lines, false otherwise | |
| 4897 * @since 2.0 | |
| 4898 */ | |
| 4899 public bool getWordWrap() { | |
| 4900 checkWidget(); | |
| 4901 return wordWrap; | |
| 4902 } | |
| 4903 /** | |
| 4904 * Returns the location of the given offset. | |
| 4905 * <p> | |
| 4906 * <b>NOTE:</b> Does not return correct values for true italic fonts (vs. slanted fonts). | |
| 4907 * </p> | |
| 4908 * | |
| 4909 * @return location of the character at the given offset in the line. | |
| 4910 */ | |
| 4911 Point getPointAtOffset(int offset) { | |
| 4912 int lineIndex = content.getLineAtOffset(offset); | |
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4913 String line = content.getLine(lineIndex); |
| 155 | 4914 int lineOffset = content.getOffsetAtLine(lineIndex); |
| 4915 int offsetInLine = offset - lineOffset; | |
| 4916 int lineLength = line.length; | |
| 4917 if (lineIndex < content.getLineCount() - 1) { | |
| 4918 int endLineOffset = content.getOffsetAtLine(lineIndex + 1) - 1; | |
| 4919 if (lineLength < offsetInLine && offsetInLine <= endLineOffset) { | |
| 4920 offsetInLine = lineLength; | |
| 4921 } | |
| 4922 } | |
| 4923 Point point; | |
| 4924 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4925 if (lineLength !is 0 && offsetInLine <= lineLength) { | |
| 4926 if (offsetInLine is lineLength) { | |
| 4927 point = layout.getLocation(offsetInLine - 1, true); | |
| 4928 } else { | |
| 4929 switch (caretAlignment) { | |
| 4930 case OFFSET_LEADING: | |
| 4931 point = layout.getLocation(offsetInLine, false); | |
| 4932 break; | |
| 4933 case PREVIOUS_OFFSET_TRAILING: | |
| 4934 default: | |
| 4935 if (offsetInLine is 0) { | |
| 4936 point = layout.getLocation(offsetInLine, false); | |
| 4937 } else { | |
| 4938 point = layout.getLocation(offsetInLine - 1, true); | |
| 4939 } | |
| 4940 break; | |
| 4941 } | |
| 4942 } | |
| 4943 } else { | |
| 4944 point = new Point(layout.getIndent(), 0); | |
| 4945 } | |
| 4946 renderer.disposeTextLayout(layout); | |
| 4947 point.x += leftMargin - horizontalScrollOffset; | |
| 4948 point.y += getLinePixel(lineIndex); | |
| 4949 return point; | |
| 4950 } | |
| 4951 /** | |
| 4952 * Inserts a string. The old selection is replaced with the new text. | |
| 4953 * | |
| 4954 * @param string the string | |
|
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diff
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|
4955 * @see #replaceTextRange(int,int,String) |
| 155 | 4956 * @exception DWTException <ul> |
| 4957 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4958 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4959 * </ul> | |
| 4960 */ | |
|
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diff
changeset
|
4961 public void insert(String string) { |
| 155 | 4962 checkWidget(); |
|
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214
diff
changeset
|
4963 // DWT extension: allow null string |
|
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214
diff
changeset
|
4964 //if (string is null) { |
|
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214
diff
changeset
|
4965 // DWT.error(DWT.ERROR_NULL_ARGUMENT); |
|
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parents:
214
diff
changeset
|
4966 //} |
| 155 | 4967 Point sel = getSelectionRange(); |
| 4968 replaceTextRange(sel.x, sel.y, string); | |
| 4969 } | |
| 4970 /** | |
| 4971 * Creates content change listeners and set the default content model. | |
| 4972 */ | |
| 4973 void installDefaultContent() { | |
| 4974 textChangeListener = new class() TextChangeListener { | |
| 4975 public void textChanging(TextChangingEvent event) { | |
| 4976 handleTextChanging(event); | |
| 4977 } | |
| 4978 public void textChanged(TextChangedEvent event) { | |
| 4979 handleTextChanged(event); | |
| 4980 } | |
| 4981 public void textSet(TextChangedEvent event) { | |
| 4982 handleTextSet(event); | |
| 4983 } | |
| 4984 }; | |
| 4985 content = new DefaultContent(); | |
| 4986 content.addTextChangeListener(textChangeListener); | |
| 4987 } | |
| 4988 /** | |
| 4989 * Adds event listeners | |
| 4990 */ | |
| 4991 void installListeners() { | |
| 4992 ScrollBar verticalBar = getVerticalBar(); | |
| 4993 ScrollBar horizontalBar = getHorizontalBar(); | |
| 4994 | |
| 4995 listener = new class() Listener { | |
| 4996 public void handleEvent(Event event) { | |
| 4997 switch (event.type) { | |
| 4998 case DWT.Dispose: handleDispose(event); break; | |
| 4999 case DWT.KeyDown: handleKeyDown(event); break; | |
| 5000 case DWT.KeyUp: handleKeyUp(event); break; | |
| 5001 case DWT.MouseDown: handleMouseDown(event); break; | |
| 5002 case DWT.MouseUp: handleMouseUp(event); break; | |
| 5003 case DWT.MouseMove: handleMouseMove(event); break; | |
| 5004 case DWT.Paint: handlePaint(event); break; | |
| 5005 case DWT.Resize: handleResize(event); break; | |
| 5006 case DWT.Traverse: handleTraverse(event); break; | |
| 5007 default: | |
| 5008 } | |
| 5009 } | |
| 5010 }; | |
| 5011 addListener(DWT.Dispose, listener); | |
| 5012 addListener(DWT.KeyDown, listener); | |
| 5013 addListener(DWT.KeyUp, listener); | |
| 5014 addListener(DWT.MouseDown, listener); | |
| 5015 addListener(DWT.MouseUp, listener); | |
| 5016 addListener(DWT.MouseMove, listener); | |
| 5017 addListener(DWT.Paint, listener); | |
| 5018 addListener(DWT.Resize, listener); | |
| 5019 addListener(DWT.Traverse, listener); | |
| 213 | 5020 ime.addListener(DWT.ImeComposition, new class () Listener { |
| 5021 public void handleEvent(Event event) { | |
| 5022 switch (event.detail) { | |
| 5023 case DWT.COMPOSITION_SELECTION: handleCompositionSelection(event); break; | |
| 5024 case DWT.COMPOSITION_CHANGED: handleCompositionChanged(event); break; | |
| 5025 case DWT.COMPOSITION_OFFSET: handleCompositionOffset(event); break; | |
|
214
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parents:
213
diff
changeset
|
5026 default: |
| 213 | 5027 } |
| 5028 } | |
| 5029 }); | |
| 155 | 5030 if (verticalBar !is null) { |
| 5031 verticalBar.addListener(DWT.Selection, new class() Listener { | |
| 5032 public void handleEvent(Event event) { | |
| 5033 handleVerticalScroll(event); | |
| 5034 } | |
| 5035 }); | |
| 5036 } | |
| 5037 if (horizontalBar !is null) { | |
| 5038 horizontalBar.addListener(DWT.Selection, new class() Listener { | |
| 5039 public void handleEvent(Event event) { | |
| 5040 handleHorizontalScroll(event); | |
| 5041 } | |
| 5042 }); | |
| 5043 } | |
| 5044 } | |
| 5045 void internalRedrawRange(int start, int length) { | |
| 5046 if (length <= 0) return; | |
| 5047 int end = start + length; | |
| 5048 int startLine = content.getLineAtOffset(start); | |
| 5049 int endLine = content.getLineAtOffset(end); | |
| 5050 int partialBottomIndex = getPartialBottomIndex(); | |
| 5051 int partialTopIndex = getPartialTopIndex(); | |
| 5052 if (startLine > partialBottomIndex || endLine < partialTopIndex) { | |
| 5053 return; | |
| 5054 } | |
| 5055 if (partialTopIndex > startLine) { | |
| 5056 startLine = partialTopIndex; | |
| 5057 start = 0; | |
| 5058 } else { | |
| 5059 start -= content.getOffsetAtLine(startLine); | |
| 5060 } | |
| 5061 if (partialBottomIndex < endLine) { | |
| 5062 endLine = partialBottomIndex + 1; | |
| 5063 end = 0; | |
| 5064 } else { | |
| 5065 end -= content.getOffsetAtLine(endLine); | |
| 5066 } | |
| 5067 | |
| 5068 TextLayout layout = renderer.getTextLayout(startLine); | |
| 5069 int lineX = leftMargin - horizontalScrollOffset, startLineY = getLinePixel(startLine); | |
| 5070 int[] offsets = layout.getLineOffsets(); | |
| 5071 int startIndex = layout.getLineIndex(Math.min(start, layout.getText().length)); | |
| 5072 | |
| 5073 /* Redraw end of line before start line if wrapped and start offset is first char */ | |
| 5074 if (wordWrap && startIndex > 0 && offsets[startIndex] is start) { | |
| 5075 Rectangle rect = layout.getLineBounds(startIndex - 1); | |
| 5076 rect.x = rect.width; | |
| 5077 rect.width = clientAreaWidth - rightMargin - rect.x; | |
| 5078 rect.x += lineX; | |
| 5079 rect.y += startLineY; | |
| 5080 super.redraw(rect.x, rect.y, rect.width, rect.height, false); | |
| 5081 } | |
| 5082 | |
| 5083 if (startLine is endLine) { | |
| 5084 int endIndex = layout.getLineIndex(Math.min(end, layout.getText().length)); | |
| 5085 if (startIndex is endIndex) { | |
| 5086 /* Redraw rect between start and end offset if start and end offsets are in same wrapped line */ | |
| 5087 Rectangle rect = layout.getBounds(start, end - 1); | |
| 5088 rect.x += lineX; | |
| 5089 rect.y += startLineY; | |
| 5090 super.redraw(rect.x, rect.y, rect.width, rect.height, false); | |
| 5091 renderer.disposeTextLayout(layout); | |
| 5092 return; | |
| 5093 } | |
| 5094 } | |
| 5095 | |
| 5096 /* Redraw start line from the start offset to the end of client area */ | |
| 5097 Rectangle startRect = layout.getBounds(start, offsets[startIndex + 1] - 1); | |
| 5098 if (startRect.height is 0) { | |
| 5099 Rectangle bounds = layout.getLineBounds(startIndex); | |
| 5100 startRect.x = bounds.width; | |
| 5101 startRect.y = bounds.y; | |
| 5102 startRect.height = bounds.height; | |
| 5103 } | |
| 5104 startRect.x += lineX; | |
| 5105 startRect.y += startLineY; | |
| 5106 startRect.width = clientAreaWidth - rightMargin - startRect.x; | |
| 5107 super.redraw(startRect.x, startRect.y, startRect.width, startRect.height, false); | |
| 5108 | |
| 5109 /* Redraw end line from the beginning of the line to the end offset */ | |
| 5110 if (startLine !is endLine) { | |
| 5111 renderer.disposeTextLayout(layout); | |
| 5112 layout = renderer.getTextLayout(endLine); | |
| 5113 offsets = layout.getLineOffsets(); | |
| 5114 } | |
| 5115 int endIndex = layout.getLineIndex(Math.min(end, layout.getText().length)); | |
| 5116 Rectangle endRect = layout.getBounds(offsets[endIndex], end - 1); | |
| 5117 if (endRect.height is 0) { | |
| 5118 Rectangle bounds = layout.getLineBounds(endIndex); | |
| 5119 endRect.y = bounds.y; | |
| 5120 endRect.height = bounds.height; | |
| 5121 } | |
| 5122 endRect.x += lineX; | |
| 5123 endRect.y += getLinePixel(endLine); | |
| 5124 super.redraw(endRect.x, endRect.y, endRect.width, endRect.height, false); | |
| 5125 renderer.disposeTextLayout(layout); | |
| 5126 | |
| 5127 /* Redraw all lines in between start and end line */ | |
| 5128 int y = startRect.y + startRect.height; | |
| 5129 if (endRect.y > y) { | |
| 5130 super.redraw(leftMargin, y, clientAreaWidth - rightMargin - leftMargin, endRect.y - y, false); | |
| 5131 } | |
| 5132 } | |
| 213 | 5133 void handleCompositionOffset (Event event) { |
| 5134 int[] trailing = new int [1]; | |
| 5135 event.index = getOffsetAtPoint(event.x, event.y, trailing, true); | |
| 5136 event.count = trailing[0]; | |
| 5137 } | |
| 5138 void handleCompositionSelection (Event event) { | |
| 5139 event.start = selection.x; | |
| 5140 event.end = selection.y; | |
| 5141 event.text = getSelectionText(); | |
| 5142 } | |
| 5143 void handleCompositionChanged(Event event) { | |
| 5144 String text = event.text; | |
| 5145 int start = event.start; | |
| 5146 int end = event.end; | |
| 5147 int length = text.length; | |
| 5148 if (length is ime.getCommitCount()) { | |
| 5149 content.replaceTextRange(start, end - start, ""); | |
| 246 | 5150 caretOffset = ime.getCompositionOffset(); |
| 213 | 5151 caretWidth = 0; |
| 5152 caretDirection = DWT.NULL; | |
| 5153 } else { | |
| 5154 content.replaceTextRange(start, end - start, text); | |
| 5155 caretOffset = ime.getCaretOffset(); | |
| 5156 if (ime.getWideCaret()) { | |
| 246 | 5157 start = ime.getCompositionOffset(); |
| 213 | 5158 int lineIndex = getCaretLine(); |
| 5159 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 5160 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 5161 caretWidth = layout.getBounds(start - lineOffset, start + length - 1 - lineOffset).width; | |
| 5162 renderer.disposeTextLayout(layout); | |
| 5163 } | |
| 5164 } | |
| 5165 showCaret(); | |
| 5166 } | |
| 155 | 5167 /** |
| 5168 * Frees resources. | |
| 5169 */ | |
| 5170 void handleDispose(Event event) { | |
| 5171 removeListener(DWT.Dispose, listener); | |
| 5172 notifyListeners(DWT.Dispose, event); | |
| 5173 event.type = DWT.None; | |
| 5174 | |
| 5175 clipboard.dispose(); | |
| 5176 if (renderer !is null) { | |
| 5177 renderer.dispose(); | |
| 5178 renderer = null; | |
| 5179 } | |
| 5180 if (content !is null) { | |
| 5181 content.removeTextChangeListener(textChangeListener); | |
| 5182 content = null; | |
| 5183 } | |
| 5184 if (defaultCaret !is null) { | |
| 5185 defaultCaret.dispose(); | |
| 5186 defaultCaret = null; | |
| 5187 } | |
| 5188 if (leftCaretBitmap !is null) { | |
| 5189 leftCaretBitmap.dispose(); | |
| 5190 leftCaretBitmap = null; | |
| 5191 } | |
| 5192 if (rightCaretBitmap !is null) { | |
| 5193 rightCaretBitmap.dispose(); | |
| 5194 rightCaretBitmap = null; | |
| 5195 } | |
| 5196 if (isBidiCaret()) { | |
| 213 | 5197 BidiUtil.removeLanguageListener(this); |
| 155 | 5198 } |
| 5199 selectionBackground = null; | |
| 5200 selectionForeground = null; | |
| 5201 textChangeListener = null; | |
| 5202 selection = null; | |
| 5203 doubleClickSelection = null; | |
| 5204 keyActionMap = null; | |
| 5205 background = null; | |
| 5206 foreground = null; | |
| 5207 clipboard = null; | |
| 5208 } | |
| 5209 /** | |
| 5210 * Scrolls the widget horizontally. | |
| 5211 */ | |
| 5212 void handleHorizontalScroll(Event event) { | |
| 5213 int scrollPixel = getHorizontalBar().getSelection() - horizontalScrollOffset; | |
| 5214 scrollHorizontal(scrollPixel, false); | |
| 5215 } | |
| 5216 /** | |
| 5217 * If an action has been registered for the key stroke execute the action. | |
| 5218 * Otherwise, if a character has been entered treat it as new content. | |
| 5219 * | |
| 5220 * @param event keyboard event | |
| 5221 */ | |
| 5222 void handleKey(Event event) { | |
| 5223 int action; | |
| 5224 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 5225 if (event.keyCode !is 0) { | |
| 5226 // special key pressed (e.g., F1) | |
| 5227 action = getKeyBinding(event.keyCode | event.stateMask); | |
| 5228 } else { | |
| 5229 // character key pressed | |
| 5230 action = getKeyBinding(event.character | event.stateMask); | |
| 5231 if (action is DWT.NULL) { | |
| 5232 // see if we have a control character | |
| 5233 if ((event.stateMask & DWT.CTRL) !is 0 && (event.character >= 0) && event.character <= 31) { | |
| 5234 // get the character from the CTRL+char sequence, the control | |
| 5235 // key subtracts 64 from the value of the key that it modifies | |
| 5236 int c = event.character + 64; | |
| 5237 action = getKeyBinding(c | event.stateMask); | |
| 5238 } | |
| 5239 } | |
| 5240 } | |
| 5241 if (action is DWT.NULL) { | |
| 5242 bool ignore = false; | |
| 5243 | |
| 5244 if (IS_CARBON) { | |
| 5245 // Ignore accelerator key combinations (we do not want to | |
| 5246 // insert a character in the text in this instance). Do not | |
| 5247 // ignore COMMAND+ALT combinations since that key sequence | |
| 5248 // produces characters on the mac. | |
| 5249 ignore = (event.stateMask ^ DWT.COMMAND) is 0 || | |
| 5250 (event.stateMask ^ (DWT.COMMAND | DWT.SHIFT)) is 0; | |
| 5251 } else if (IS_MOTIF) { | |
| 5252 // Ignore accelerator key combinations (we do not want to | |
| 5253 // insert a character in the text in this instance). Do not | |
| 5254 // ignore ALT combinations since this key sequence | |
| 5255 // produces characters on motif. | |
| 5256 ignore = (event.stateMask ^ DWT.CTRL) is 0 || | |
| 5257 (event.stateMask ^ (DWT.CTRL | DWT.SHIFT)) is 0; | |
| 5258 } else { | |
| 5259 // Ignore accelerator key combinations (we do not want to | |
| 5260 // insert a character in the text in this instance). Don't | |
| 5261 // ignore CTRL+ALT combinations since that is the Alt Gr | |
| 5262 // key on some keyboards. See bug 20953. | |
| 5263 ignore = (event.stateMask ^ DWT.ALT) is 0 || | |
| 5264 (event.stateMask ^ DWT.CTRL) is 0 || | |
| 5265 (event.stateMask ^ (DWT.ALT | DWT.SHIFT)) is 0 || | |
| 5266 (event.stateMask ^ (DWT.CTRL | DWT.SHIFT)) is 0; | |
| 5267 } | |
| 5268 // -ignore anything below SPACE except for line delimiter keys and tab. | |
| 5269 // -ignore DEL | |
| 5270 if (!ignore && event.character > 31 && event.character !is DWT.DEL || | |
| 5271 event.character is DWT.CR || event.character is DWT.LF || | |
| 5272 event.character is TAB) { | |
| 5273 doContent(event.character); | |
| 5274 update(); | |
| 5275 } | |
| 5276 } else { | |
| 5277 invokeAction(action); | |
| 5278 } | |
| 5279 } | |
| 5280 /** | |
| 5281 * If a VerifyKey listener exists, verify that the key that was entered | |
| 5282 * should be processed. | |
| 5283 * | |
| 5284 * @param event keyboard event | |
| 5285 */ | |
| 5286 void handleKeyDown(Event event) { | |
| 5287 if (clipboardSelection is null) { | |
| 5288 clipboardSelection = new Point(selection.x, selection.y); | |
| 5289 } | |
| 5290 | |
| 5291 Event verifyEvent = new Event(); | |
| 5292 verifyEvent.character = event.character; | |
| 5293 verifyEvent.keyCode = event.keyCode; | |
| 5294 verifyEvent.stateMask = event.stateMask; | |
| 5295 verifyEvent.doit = true; | |
| 5296 notifyListeners(VerifyKey, verifyEvent); | |
| 5297 if (verifyEvent.doit) { | |
| 5298 handleKey(event); | |
| 5299 } | |
| 5300 } | |
| 5301 /** | |
| 5302 * Update the Selection Clipboard. | |
| 5303 * | |
| 5304 * @param event keyboard event | |
| 5305 */ | |
| 5306 void handleKeyUp(Event event) { | |
| 5307 if (clipboardSelection !is null) { | |
| 5308 if (clipboardSelection.x !is selection.x || clipboardSelection.y !is selection.y) { | |
| 5309 try { | |
| 5310 if (selection.y - selection.x > 0) { | |
| 5311 setClipboardContent(selection.x, selection.y - selection.x, DND.SELECTION_CLIPBOARD); | |
| 5312 } | |
| 5313 } catch (DWTError error) { | |
| 5314 // Copy to clipboard failed. This happens when another application | |
| 5315 // is accessing the clipboard while we copy. Ignore the error. | |
| 5316 // Fixes 1GDQAVN | |
| 5317 // Rethrow all other errors. Fixes bug 17578. | |
| 5318 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 5319 throw error; | |
| 5320 } | |
| 5321 } | |
| 5322 } | |
| 5323 } | |
| 5324 clipboardSelection = null; | |
| 5325 } | |
| 5326 /** | |
| 5327 * Updates the caret location and selection if mouse button 1 has been | |
| 5328 * pressed. | |
| 5329 */ | |
| 5330 void handleMouseDown(Event event) { | |
| 5331 //force focus (object support) | |
| 5332 forceFocus(); | |
| 5333 | |
| 5334 //drag detect | |
| 5335 if (dragDetect_ && checkDragDetect(event)) return; | |
| 5336 | |
| 5337 //paste clipboard selection | |
| 5338 if (event.button is 2) { | |
| 5339 auto o = cast(ArrayWrapperString)getClipboardContent(DND.SELECTION_CLIPBOARD); | |
|
212
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Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
5340 String text = o.array; |
| 155 | 5341 if (text !is null && text.length > 0) { |
| 5342 // position cursor | |
| 5343 doMouseLocationChange(event.x, event.y, false); | |
| 5344 // insert text | |
| 5345 Event e = new Event(); | |
| 5346 e.start = selection.x; | |
| 5347 e.end = selection.y; | |
| 5348 e.text = getModelDelimitedText(text); | |
| 5349 sendKeyEvent(e); | |
| 5350 } | |
| 5351 } | |
| 5352 | |
| 5353 //set selection | |
| 5354 if ((event.button !is 1) || (IS_CARBON && (event.stateMask & DWT.MOD4) !is 0)) { | |
| 5355 return; | |
| 5356 } | |
| 5357 clickCount = event.count; | |
| 5358 if (clickCount is 1) { | |
| 5359 bool select = (event.stateMask & DWT.MOD2) !is 0; | |
| 5360 doMouseLocationChange(event.x, event.y, select); | |
| 5361 } else { | |
| 5362 if (doubleClickEnabled) { | |
| 5363 clearSelection(false); | |
| 5364 int offset = getOffsetAtPoint(event.x, event.y); | |
| 5365 int lineIndex = content.getLineAtOffset(offset); | |
| 5366 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 5367 int lineEnd = content.getCharCount(); | |
| 5368 if (lineIndex + 1 < content.getLineCount()) { | |
| 5369 lineEnd = content.getOffsetAtLine(lineIndex + 1); | |
| 5370 } | |
| 5371 int start, end; | |
| 5372 if ((clickCount & 1) is 0) { | |
| 5373 start = Math.max(0, getWordPrevious(offset, DWT.MOVEMENT_WORD_START)); | |
| 5374 end = Math.min(content.getCharCount(), getWordNext(start, DWT.MOVEMENT_WORD_END)); | |
| 5375 } else { | |
| 5376 start = lineOffset; | |
| 5377 end = lineEnd; | |
| 5378 } | |
| 213 | 5379 caretOffset = start; |
| 5380 resetSelection(); | |
| 155 | 5381 caretOffset = end; |
| 5382 showCaret(); | |
| 5383 doMouseSelection(); | |
| 5384 doubleClickSelection = new Point(selection.x, selection.y); | |
| 5385 } | |
| 5386 } | |
| 5387 } | |
| 5388 /** | |
| 5389 * Updates the caret location and selection if mouse button 1 is pressed | |
| 5390 * during the mouse move. | |
| 5391 */ | |
| 5392 void handleMouseMove(Event event) { | |
| 5393 if (clickCount is 0) return; | |
| 5394 doMouseLocationChange(event.x, event.y, true); | |
| 5395 update(); | |
| 5396 doAutoScroll(event); | |
| 5397 } | |
| 5398 /** | |
| 5399 * Autoscrolling ends when the mouse button is released. | |
| 5400 */ | |
| 5401 void handleMouseUp(Event event) { | |
| 5402 clickCount = 0; | |
| 5403 endAutoScroll(); | |
| 5404 if (event.button is 1) { | |
| 5405 try { | |
| 5406 if (selection.y - selection.x > 0) { | |
| 5407 setClipboardContent(selection.x, selection.y - selection.x, DND.SELECTION_CLIPBOARD); | |
| 5408 } | |
| 5409 } catch (DWTError error) { | |
| 5410 // Copy to clipboard failed. This happens when another application | |
| 5411 // is accessing the clipboard while we copy. Ignore the error. | |
| 5412 // Fixes 1GDQAVN | |
| 5413 // Rethrow all other errors. Fixes bug 17578. | |
| 5414 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 5415 throw error; | |
| 5416 } | |
| 5417 } | |
| 5418 } | |
| 5419 } | |
| 5420 /** | |
| 5421 * Renders the invalidated area specified in the paint event. | |
| 5422 * | |
| 5423 * @param event paint event | |
| 5424 */ | |
| 5425 void handlePaint(Event event) { | |
| 5426 if (event.width is 0 || event.height is 0) return; | |
| 5427 if (clientAreaWidth is 0 || clientAreaHeight is 0) return; | |
| 5428 | |
| 5429 int startLine = getLineIndex(event.y); | |
| 5430 int y = getLinePixel(startLine); | |
| 5431 int endY = event.y + event.height; | |
| 5432 GC gc = event.gc; | |
| 5433 Color background = getBackground(); | |
| 5434 Color foreground = getForeground(); | |
| 5435 if (endY > 0) { | |
| 5436 int lineCount = isSingleLine() ? 1 : content.getLineCount(); | |
| 5437 int x = leftMargin - horizontalScrollOffset; | |
| 5438 for (int i = startLine; y < endY && i < lineCount; i++) { | |
| 5439 y += renderer.drawLine(i, x, y, gc, background, foreground); | |
| 5440 } | |
| 5441 if (y < endY) { | |
| 5442 gc.setBackground(background); | |
| 5443 drawBackground(gc, 0, y, clientAreaWidth, endY - y); | |
| 5444 } | |
| 5445 } | |
| 5446 // fill the margin background | |
| 5447 gc.setBackground(background); | |
| 5448 if (topMargin > 0) { | |
| 5449 drawBackground(gc, 0, 0, clientAreaWidth, topMargin); | |
| 5450 } | |
| 5451 if (bottomMargin > 0) { | |
| 5452 drawBackground(gc, 0, clientAreaHeight - bottomMargin, clientAreaWidth, bottomMargin); | |
| 5453 } | |
| 5454 if (leftMargin > 0) { | |
| 5455 drawBackground(gc, 0, 0, leftMargin, clientAreaHeight); | |
| 5456 } | |
| 5457 if (rightMargin > 0) { | |
| 5458 drawBackground(gc, clientAreaWidth - rightMargin, 0, rightMargin, clientAreaHeight); | |
| 5459 } | |
| 5460 } | |
| 5461 /** | |
| 5462 * Recalculates the scroll bars. Rewraps all lines when in word | |
| 5463 * wrap mode. | |
| 5464 * | |
| 5465 * @param event resize event | |
| 5466 */ | |
| 5467 void handleResize(Event event) { | |
| 5468 int oldHeight = clientAreaHeight; | |
| 5469 int oldWidth = clientAreaWidth; | |
| 5470 Rectangle clientArea = getClientArea(); | |
| 5471 clientAreaHeight = clientArea.height; | |
| 5472 clientAreaWidth = clientArea.width; | |
| 5473 /* Redraw the old or new right/bottom margin if needed */ | |
| 5474 if (oldWidth !is clientAreaWidth) { | |
| 5475 if (rightMargin > 0) { | |
| 5476 int x = (oldWidth < clientAreaWidth ? oldWidth : clientAreaWidth) - rightMargin; | |
| 5477 super.redraw(x, 0, rightMargin, oldHeight, false); | |
| 5478 } | |
| 5479 } | |
| 5480 if (oldHeight !is clientAreaHeight) { | |
| 5481 if (bottomMargin > 0) { | |
| 5482 int y = (oldHeight < clientAreaHeight ? oldHeight : clientAreaHeight) - bottomMargin; | |
| 5483 super.redraw(0, y, oldWidth, bottomMargin, false); | |
| 5484 } | |
| 5485 } | |
| 5486 if (wordWrap) { | |
| 5487 if (oldWidth !is clientAreaWidth) { | |
| 5488 renderer.reset(0, content.getLineCount()); | |
| 5489 verticalScrollOffset = -1; | |
| 5490 renderer.calculateIdle(); | |
| 5491 super.redraw(); | |
| 5492 } | |
| 5493 if (oldHeight !is clientAreaHeight) { | |
| 5494 if (oldHeight is 0) topIndexY = 0; | |
| 5495 setScrollBars(true); | |
| 5496 } | |
| 5497 setCaretLocation(); | |
| 5498 } else { | |
| 5499 renderer.calculateClientArea(); | |
| 5500 setScrollBars(true); | |
| 5501 claimRightFreeSpace(); | |
| 5502 // StyledText allows any value for horizontalScrollOffset when clientArea is zero | |
| 5503 // in setHorizontalPixel() and setHorisontalOffset(). Fixes bug 168429. | |
| 5504 if (clientAreaWidth !is 0) { | |
| 5505 ScrollBar horizontalBar = getHorizontalBar(); | |
| 5506 if (horizontalBar !is null && horizontalBar.getVisible()) { | |
| 5507 if (horizontalScrollOffset !is horizontalBar.getSelection()) { | |
| 5508 horizontalBar.setSelection(horizontalScrollOffset); | |
| 5509 horizontalScrollOffset = horizontalBar.getSelection(); | |
| 5510 } | |
| 5511 } | |
| 5512 } | |
| 5513 } | |
| 5514 claimBottomFreeSpace(); | |
| 5515 //TODO FIX TOP INDEX DURING RESIZE | |
| 5516 // if (oldHeight !is clientAreaHeight || wordWrap) { | |
| 5517 // calculateTopIndex(0); | |
| 5518 // } | |
| 5519 } | |
| 5520 /** | |
| 5521 * Updates the caret position and selection and the scroll bars to reflect | |
| 5522 * the content change. | |
| 5523 */ | |
| 5524 void handleTextChanged(TextChangedEvent event) { | |
| 213 | 5525 int offset = ime.getCompositionOffset(); |
| 5526 if (offset !is -1 && lastTextChangeStart < offset) { | |
| 5527 ime.setCompositionOffset(offset + lastTextChangeNewCharCount - lastTextChangeReplaceCharCount); | |
| 5528 } | |
| 155 | 5529 int firstLine = content.getLineAtOffset(lastTextChangeStart); |
| 5530 resetCache(firstLine, 0); | |
| 5531 if (!isFixedLineHeight() && topIndex > firstLine) { | |
| 5532 topIndex = firstLine; | |
| 5533 topIndexY = 0; | |
| 5534 super.redraw(); | |
| 5535 } else { | |
| 5536 int lastLine = firstLine + lastTextChangeNewLineCount; | |
| 5537 int firstLineTop = getLinePixel(firstLine); | |
| 5538 int newLastLineBottom = getLinePixel(lastLine + 1); | |
| 5539 if (lastLineBottom !is newLastLineBottom) { | |
| 5540 super.redraw(); | |
| 5541 } else { | |
| 5542 super.redraw(0, firstLineTop, clientAreaWidth, newLastLineBottom - firstLineTop, false); | |
| 5543 redrawLinesBullet(renderer.redrawLines); | |
| 5544 } | |
| 5545 } | |
| 5546 renderer.redrawLines = null; | |
| 5547 // update selection/caret location after styles have been changed. | |
| 5548 // otherwise any text measuring could be incorrect | |
| 5549 // | |
| 5550 // also, this needs to be done after all scrolling. Otherwise, | |
| 5551 // selection redraw would be flushed during scroll which is wrong. | |
| 5552 // in some cases new text would be drawn in scroll source area even | |
| 5553 // though the intent is to scroll it. | |
| 5554 updateSelection(lastTextChangeStart, lastTextChangeReplaceCharCount, lastTextChangeNewCharCount); | |
| 5555 if (lastTextChangeReplaceLineCount > 0 || wordWrap) { | |
| 5556 claimBottomFreeSpace(); | |
| 5557 } | |
| 5558 if (lastTextChangeReplaceCharCount > 0) { | |
| 5559 claimRightFreeSpace(); | |
| 5560 } | |
| 5561 } | |
| 5562 /** | |
| 5563 * Updates the screen to reflect a pending content change. | |
| 5564 * | |
| 5565 * @param event .start the start offset of the change | |
| 5566 * @param event .newText text that is going to be inserted or empty String | |
| 5567 * if no text will be inserted | |
| 5568 * @param event .replaceCharCount length of text that is going to be replaced | |
| 5569 * @param event .newCharCount length of text that is going to be inserted | |
| 5570 * @param event .replaceLineCount number of lines that are going to be replaced | |
| 5571 * @param event .newLineCount number of new lines that are going to be inserted | |
| 5572 */ | |
| 5573 void handleTextChanging(TextChangingEvent event) { | |
| 5574 if (event.replaceCharCount < 0) { | |
| 5575 event.start += event.replaceCharCount; | |
| 5576 event.replaceCharCount *= -1; | |
| 5577 } | |
| 5578 lastTextChangeStart = event.start; | |
| 5579 lastTextChangeNewLineCount = event.newLineCount; | |
| 5580 lastTextChangeNewCharCount = event.newCharCount; | |
| 5581 lastTextChangeReplaceLineCount = event.replaceLineCount; | |
| 5582 lastTextChangeReplaceCharCount = event.replaceCharCount; | |
| 5583 int lineIndex = content.getLineAtOffset(event.start); | |
| 5584 int srcY = getLinePixel(lineIndex + event.replaceLineCount + 1); | |
| 5585 int destY = getLinePixel(lineIndex + 1) + event.newLineCount * renderer.getLineHeight(); | |
| 5586 lastLineBottom = destY; | |
| 5587 if (srcY < 0 && destY < 0) { | |
| 5588 lastLineBottom += srcY - destY; | |
| 5589 verticalScrollOffset += destY - srcY; | |
| 5590 calculateTopIndex(destY - srcY); | |
| 5591 setScrollBars(true); | |
| 5592 } else { | |
| 5593 scrollText(srcY, destY); | |
| 5594 } | |
| 5595 | |
| 5596 renderer.textChanging(event); | |
| 5597 | |
| 5598 // Update the caret offset if it is greater than the length of the content. | |
| 5599 // This is necessary since style range API may be called between the | |
| 5600 // handleTextChanging and handleTextChanged events and this API sets the | |
| 5601 // caretOffset. | |
| 5602 int newEndOfText = content.getCharCount() - event.replaceCharCount + event.newCharCount; | |
| 5603 if (caretOffset > newEndOfText) caretOffset = newEndOfText; | |
| 5604 } | |
| 5605 /** | |
| 5606 * Called when the widget content is set programmatically, overwriting | |
| 5607 * the old content. Resets the caret position, selection and scroll offsets. | |
| 5608 * Recalculates the content width and scroll bars. Redraws the widget. | |
| 5609 * | |
| 5610 * @param event text change event. | |
| 5611 */ | |
| 5612 void handleTextSet(TextChangedEvent event) { | |
| 5613 reset(); | |
| 5614 } | |
| 5615 /** | |
| 5616 * Called when a traversal key is pressed. | |
| 5617 * Allow tab next traversal to occur when the widget is in single | |
| 5618 * line mode or in multi line and non-editable mode . | |
| 5619 * When in editable multi line mode we want to prevent the tab | |
| 5620 * traversal and receive the tab key event instead. | |
| 5621 * | |
| 5622 * @param event the event | |
| 5623 */ | |
| 5624 void handleTraverse(Event event) { | |
| 5625 switch (event.detail) { | |
| 5626 case DWT.TRAVERSE_ESCAPE: | |
| 5627 case DWT.TRAVERSE_PAGE_NEXT: | |
| 5628 case DWT.TRAVERSE_PAGE_PREVIOUS: | |
| 5629 event.doit = true; | |
| 5630 break; | |
| 5631 case DWT.TRAVERSE_RETURN: | |
| 5632 case DWT.TRAVERSE_TAB_NEXT: | |
| 5633 case DWT.TRAVERSE_TAB_PREVIOUS: | |
| 5634 if ((getStyle() & DWT.SINGLE) !is 0) { | |
| 5635 event.doit = true; | |
| 5636 } else { | |
| 5637 if (!editable || (event.stateMask & DWT.MODIFIER_MASK) !is 0) { | |
| 5638 event.doit = true; | |
| 5639 } | |
| 5640 } | |
| 5641 break; | |
| 5642 default: | |
| 5643 } | |
| 5644 } | |
| 5645 /** | |
| 5646 * Scrolls the widget vertically. | |
| 5647 */ | |
| 5648 void handleVerticalScroll(Event event) { | |
| 5649 int scrollPixel = getVerticalBar().getSelection() - getVerticalScrollOffset(); | |
| 5650 scrollVertical(scrollPixel, false); | |
| 5651 } | |
| 5652 /** | |
| 5653 * Add accessibility support for the widget. | |
| 5654 */ | |
| 5655 void initializeAccessible() { | |
| 5656 final Accessible accessible = getAccessible(); | |
| 5657 accessible.addAccessibleListener(new class() AccessibleAdapter { | |
| 5658 public void getName (AccessibleEvent e) { | |
|
212
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parents:
197
diff
changeset
|
5659 String name = null; |
| 155 | 5660 Label label = getAssociatedLabel (); |
| 5661 if (label !is null) { | |
| 5662 name = stripMnemonic (label.getText()); | |
| 5663 } | |
| 5664 e.result = name; | |
| 5665 } | |
| 5666 public void getHelp(AccessibleEvent e) { | |
| 5667 e.result = getToolTipText(); | |
| 5668 } | |
| 5669 public void getKeyboardShortcut(AccessibleEvent e) { | |
|
212
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Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
5670 String shortcut = null; |
| 155 | 5671 Label label = getAssociatedLabel (); |
| 5672 if (label !is null) { | |
|
212
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reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
5673 String text = label.getText (); |
| 155 | 5674 if (text !is null) { |
| 5675 dchar mnemonic = _findMnemonic (text); | |
| 5676 if (mnemonic !is '\0') { | |
| 5677 shortcut = "Alt+"~tango.text.convert.Utf.toString( [mnemonic] ); //$NON-NLS-1$ | |
| 5678 } | |
| 5679 } | |
| 5680 } | |
| 5681 e.result = shortcut; | |
| 5682 } | |
| 5683 }); | |
| 5684 accessible.addAccessibleTextListener(new class() AccessibleTextAdapter { | |
| 5685 public void getCaretOffset(AccessibleTextEvent e) { | |
| 5686 e.offset = this.outer.getCaretOffset(); | |
| 5687 } | |
| 5688 public void getSelectionRange(AccessibleTextEvent e) { | |
| 5689 Point selection = this.outer.getSelectionRange(); | |
| 5690 e.offset = selection.x; | |
| 5691 e.length = selection.y; | |
| 5692 } | |
| 5693 }); | |
| 5694 accessible.addAccessibleControlListener(new class() AccessibleControlAdapter { | |
| 5695 public void getRole(AccessibleControlEvent e) { | |
| 5696 e.detail = ACC.ROLE_TEXT; | |
| 5697 } | |
| 5698 public void getState(AccessibleControlEvent e) { | |
| 5699 int state = 0; | |
| 5700 if (isEnabled()) state |= ACC.STATE_FOCUSABLE; | |
| 5701 if (isFocusControl()) state |= ACC.STATE_FOCUSED; | |
| 5702 if (!isVisible()) state |= ACC.STATE_INVISIBLE; | |
| 5703 if (!getEditable()) state |= ACC.STATE_READONLY; | |
| 5704 e.detail = state; | |
| 5705 } | |
| 5706 public void getValue(AccessibleControlEvent e) { | |
| 5707 e.result = this.outer.getText(); | |
| 5708 } | |
| 5709 }); | |
| 5710 addListener(DWT.FocusIn, new class(accessible) Listener { | |
| 5711 Accessible acc; | |
| 5712 this( Accessible acc ){ this.acc = acc; } | |
| 5713 public void handleEvent(Event event) { | |
| 5714 acc.setFocus(ACC.CHILDID_SELF); | |
| 5715 } | |
| 5716 }); | |
| 5717 } | |
| 5718 /* | |
| 5719 * Return the Label immediately preceding the receiver in the z-order, | |
| 5720 * or null if none. | |
| 5721 */ | |
| 5722 Label getAssociatedLabel () { | |
| 5723 Control[] siblings = getParent ().getChildren (); | |
| 5724 for (int i = 0; i < siblings.length; i++) { | |
| 5725 if (siblings [i] is this) { | |
| 5726 if (i > 0 && ( null !is cast(Label)siblings [i-1])) { | |
| 5727 return cast(Label) siblings [i-1]; | |
| 5728 } | |
| 5729 } | |
| 5730 } | |
| 5731 return null; | |
| 5732 } | |
|
212
ab60f3309436
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Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
5733 String stripMnemonic (String string) { |
| 155 | 5734 int index = 0; |
| 5735 int length_ = string.length; | |
| 5736 do { | |
| 5737 while ((index < length_) && (string[index] !is '&')) index++; | |
| 5738 if (++index >= length_) return string; | |
| 5739 if (string[index] !is '&') { | |
| 5740 return string[0 .. index-1] ~ string[index .. length_]; | |
| 5741 } | |
| 5742 index++; | |
| 5743 } while (index < length_); | |
| 5744 return string; | |
| 5745 } | |
| 5746 /* | |
| 5747 * Return the lowercase of the first non-'&' character following | |
| 5748 * an '&' character in the given string. If there are no '&' | |
| 5749 * characters in the given string, return '\0'. | |
| 5750 */ | |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
5751 dchar _findMnemonic (String string) { |
| 155 | 5752 if (string is null) return '\0'; |
| 5753 int index = 0; | |
| 5754 int length_ = string.length; | |
| 5755 do { | |
| 5756 while (index < length_ && string[index] !is '&') index++; | |
| 5757 if (++index >= length_) return '\0'; | |
| 178 | 5758 if (string[index] !is '&') return CharacterToLower(firstCodePoint( string[index .. $ ] )); |
| 155 | 5759 index++; |
| 5760 } while (index < length_); | |
| 5761 return '\0'; | |
| 5762 } | |
| 5763 /** | |
| 5764 * Executes the action. | |
| 5765 * | |
| 5766 * @param action one of the actions defined in ST.java | |
| 5767 */ | |
| 5768 public void invokeAction(int action) { | |
| 5769 checkWidget(); | |
| 5770 updateCaretDirection = true; | |
| 5771 switch (action) { | |
| 5772 // Navigation | |
| 5773 case ST.LINE_UP: | |
| 5774 doLineUp(false); | |
| 5775 clearSelection(true); | |
| 5776 break; | |
| 5777 case ST.LINE_DOWN: | |
| 5778 doLineDown(false); | |
| 5779 clearSelection(true); | |
| 5780 break; | |
| 5781 case ST.LINE_START: | |
| 5782 doLineStart(); | |
| 5783 clearSelection(true); | |
| 5784 break; | |
| 5785 case ST.LINE_END: | |
| 5786 doLineEnd(); | |
| 5787 clearSelection(true); | |
| 5788 break; | |
| 5789 case ST.COLUMN_PREVIOUS: | |
| 5790 doCursorPrevious(); | |
| 5791 clearSelection(true); | |
| 5792 break; | |
| 5793 case ST.COLUMN_NEXT: | |
| 5794 doCursorNext(); | |
| 5795 clearSelection(true); | |
| 5796 break; | |
| 5797 case ST.PAGE_UP: | |
| 5798 doPageUp(false, -1); | |
| 5799 clearSelection(true); | |
| 5800 break; | |
| 5801 case ST.PAGE_DOWN: | |
| 5802 doPageDown(false, -1); | |
| 5803 clearSelection(true); | |
| 5804 break; | |
| 5805 case ST.WORD_PREVIOUS: | |
| 5806 doWordPrevious(); | |
| 5807 clearSelection(true); | |
| 5808 break; | |
| 5809 case ST.WORD_NEXT: | |
| 5810 doWordNext(); | |
| 5811 clearSelection(true); | |
| 5812 break; | |
| 5813 case ST.TEXT_START: | |
| 5814 doContentStart(); | |
| 5815 clearSelection(true); | |
| 5816 break; | |
| 5817 case ST.TEXT_END: | |
| 5818 doContentEnd(); | |
| 5819 clearSelection(true); | |
| 5820 break; | |
| 5821 case ST.WINDOW_START: | |
| 5822 doPageStart(); | |
| 5823 clearSelection(true); | |
| 5824 break; | |
| 5825 case ST.WINDOW_END: | |
| 5826 doPageEnd(); | |
| 5827 clearSelection(true); | |
| 5828 break; | |
| 5829 // Selection | |
| 5830 case ST.SELECT_LINE_UP: | |
| 5831 doSelectionLineUp(); | |
| 5832 break; | |
| 5833 case ST.SELECT_ALL: | |
| 5834 selectAll(); | |
| 5835 break; | |
| 5836 case ST.SELECT_LINE_DOWN: | |
| 5837 doSelectionLineDown(); | |
| 5838 break; | |
| 5839 case ST.SELECT_LINE_START: | |
| 5840 doLineStart(); | |
| 5841 doSelection(ST.COLUMN_PREVIOUS); | |
| 5842 break; | |
| 5843 case ST.SELECT_LINE_END: | |
| 5844 doLineEnd(); | |
| 5845 doSelection(ST.COLUMN_NEXT); | |
| 5846 break; | |
| 5847 case ST.SELECT_COLUMN_PREVIOUS: | |
| 5848 doSelectionCursorPrevious(); | |
| 5849 doSelection(ST.COLUMN_PREVIOUS); | |
| 5850 break; | |
| 5851 case ST.SELECT_COLUMN_NEXT: | |
| 5852 doSelectionCursorNext(); | |
| 5853 doSelection(ST.COLUMN_NEXT); | |
| 5854 break; | |
| 5855 case ST.SELECT_PAGE_UP: | |
| 5856 doSelectionPageUp(-1); | |
| 5857 break; | |
| 5858 case ST.SELECT_PAGE_DOWN: | |
| 5859 doSelectionPageDown(-1); | |
| 5860 break; | |
| 5861 case ST.SELECT_WORD_PREVIOUS: | |
| 5862 doSelectionWordPrevious(); | |
| 5863 doSelection(ST.COLUMN_PREVIOUS); | |
| 5864 break; | |
| 5865 case ST.SELECT_WORD_NEXT: | |
| 5866 doSelectionWordNext(); | |
| 5867 doSelection(ST.COLUMN_NEXT); | |
| 5868 break; | |
| 5869 case ST.SELECT_TEXT_START: | |
| 5870 doContentStart(); | |
| 5871 doSelection(ST.COLUMN_PREVIOUS); | |
| 5872 break; | |
| 5873 case ST.SELECT_TEXT_END: | |
| 5874 doContentEnd(); | |
| 5875 doSelection(ST.COLUMN_NEXT); | |
| 5876 break; | |
| 5877 case ST.SELECT_WINDOW_START: | |
| 5878 doPageStart(); | |
| 5879 doSelection(ST.COLUMN_PREVIOUS); | |
| 5880 break; | |
| 5881 case ST.SELECT_WINDOW_END: | |
| 5882 doPageEnd(); | |
| 5883 doSelection(ST.COLUMN_NEXT); | |
| 5884 break; | |
| 5885 // Modification | |
| 5886 case ST.CUT: | |
| 5887 cut(); | |
| 5888 break; | |
| 5889 case ST.COPY: | |
| 5890 copy(); | |
| 5891 break; | |
| 5892 case ST.PASTE: | |
| 5893 paste(); | |
| 5894 break; | |
| 5895 case ST.DELETE_PREVIOUS: | |
| 5896 doBackspace(); | |
| 5897 break; | |
| 5898 case ST.DELETE_NEXT: | |
| 5899 doDelete(); | |
| 5900 break; | |
| 5901 case ST.DELETE_WORD_PREVIOUS: | |
| 5902 doDeleteWordPrevious(); | |
| 5903 break; | |
| 5904 case ST.DELETE_WORD_NEXT: | |
| 5905 doDeleteWordNext(); | |
| 5906 break; | |
| 5907 // Miscellaneous | |
| 5908 case ST.TOGGLE_OVERWRITE: | |
| 5909 overwrite = !overwrite; // toggle insert/overwrite mode | |
| 5910 break; | |
| 5911 default: | |
| 5912 } | |
| 5913 } | |
| 5914 /** | |
| 5915 * Temporary until DWT provides this | |
| 5916 */ | |
| 5917 bool isBidi() { | |
| 213 | 5918 return IS_GTK || IS_CARBON || BidiUtil.isBidiPlatform() || isMirrored_; |
| 155 | 5919 } |
| 5920 bool isBidiCaret() { | |
| 5921 return BidiUtil.isBidiPlatform(); | |
| 5922 } | |
| 5923 bool isFixedLineHeight() { | |
| 5924 return fixedLineHeight; | |
| 5925 } | |
| 5926 /** | |
| 5927 * Returns whether the given offset is inside a multi byte line delimiter. | |
| 5928 * Example: | |
| 5929 * "Line1\r\n" isLineDelimiter(5) is false but isLineDelimiter(6) is true | |
| 5930 * | |
| 5931 * @return true if the given offset is inside a multi byte line delimiter. | |
| 5932 * false if the given offset is before or after a line delimiter. | |
| 5933 */ | |
| 5934 bool isLineDelimiter(int offset) { | |
| 5935 int line = content.getLineAtOffset(offset); | |
| 5936 int lineOffset = content.getOffsetAtLine(line); | |
| 5937 int offsetInLine = offset - lineOffset; | |
| 5938 // offsetInLine will be greater than line length if the line | |
| 5939 // delimiter is longer than one character and the offset is set | |
| 5940 // in between parts of the line delimiter. | |
| 5941 return offsetInLine > content.getLine(line).length; | |
| 5942 } | |
| 5943 /** | |
| 5944 * Returns whether the widget is mirrored (right oriented/right to left | |
| 5945 * writing order). | |
| 5946 * | |
| 5947 * @return isMirrored true=the widget is right oriented, false=the widget | |
| 5948 * is left oriented | |
| 5949 */ | |
| 5950 bool isMirrored() { | |
| 5951 return isMirrored_; | |
| 5952 } | |
| 5953 /** | |
| 5954 * Returns whether the widget can have only one line. | |
| 5955 * | |
| 5956 * @return true if widget can have only one line, false if widget can have | |
| 5957 * multiple lines | |
| 5958 */ | |
| 5959 bool isSingleLine() { | |
| 5960 return (getStyle() & DWT.SINGLE) !is 0; | |
| 5961 } | |
| 5962 /** | |
| 5963 * Sends the specified verify event, replace/insert text as defined by | |
| 5964 * the event and send a modify event. | |
| 5965 * | |
| 5966 * @param event the text change event. | |
| 5967 * <ul> | |
| 5968 * <li>event.start - the replace start offset</li> | |
| 5969 * <li>event.end - the replace end offset</li> | |
| 5970 * <li>event.text - the new text</li> | |
| 5971 * </ul> | |
| 5972 * @param updateCaret whether or not he caret should be set behind | |
| 5973 * the new text | |
| 5974 */ | |
| 5975 void modifyContent(Event event, bool updateCaret) { | |
| 5976 event.doit = true; | |
| 5977 notifyListeners(DWT.Verify, event); | |
| 5978 if (event.doit) { | |
| 5979 StyledTextEvent styledTextEvent = null; | |
| 5980 int replacedLength = event.end - event.start; | |
| 5981 if (isListening(ExtendedModify)) { | |
| 5982 styledTextEvent = new StyledTextEvent(content); | |
| 5983 styledTextEvent.start = event.start; | |
| 5984 styledTextEvent.end = event.start + event.text.length; | |
| 5985 styledTextEvent.text = content.getTextRange(event.start, replacedLength); | |
| 5986 } | |
| 5987 if (updateCaret) { | |
| 5988 //Fix advancing flag for delete/backspace key on direction boundary | |
| 5989 if (event.text.length is 0) { | |
| 5990 int lineIndex = content.getLineAtOffset(event.start); | |
| 5991 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 5992 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 5993 int levelStart = layout.getLevel(event.start - lineOffset); | |
| 5994 int lineIndexEnd = content.getLineAtOffset(event.end); | |
| 5995 if (lineIndex !is lineIndexEnd) { | |
| 5996 renderer.disposeTextLayout(layout); | |
| 5997 lineOffset = content.getOffsetAtLine(lineIndexEnd); | |
| 5998 layout = renderer.getTextLayout(lineIndexEnd); | |
| 5999 } | |
| 6000 int levelEnd = layout.getLevel(event.end - lineOffset); | |
| 6001 renderer.disposeTextLayout(layout); | |
| 6002 if (levelStart !is levelEnd) { | |
| 6003 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 6004 } else { | |
| 6005 caretAlignment = OFFSET_LEADING; | |
| 6006 } | |
| 6007 } | |
| 6008 } | |
| 6009 content.replaceTextRange(event.start, replacedLength, event.text); | |
| 6010 // set the caret position prior to sending the modify event. | |
| 6011 // fixes 1GBB8NJ | |
| 6012 if (updateCaret) { | |
| 6013 // always update the caret location. fixes 1G8FODP | |
| 6014 setSelection(event.start + event.text.length, 0, true); | |
| 6015 showCaret(); | |
| 6016 } | |
| 6017 sendModifyEvent(event); | |
| 6018 if (isListening(ExtendedModify)) { | |
| 6019 notifyListeners(ExtendedModify, styledTextEvent); | |
| 6020 } | |
| 6021 } | |
| 6022 } | |
| 6023 void paintObject(GC gc, int x, int y, int ascent, int descent, StyleRange style, Bullet bullet, int bulletIndex) { | |
| 6024 if (isListening(PaintObject)) { | |
| 6025 StyledTextEvent event = new StyledTextEvent (content) ; | |
| 6026 event.gc = gc; | |
| 6027 event.x = x; | |
| 6028 event.y = y; | |
| 6029 event.ascent = ascent; | |
| 6030 event.descent = descent; | |
| 6031 event.style = style; | |
| 6032 event.bullet = bullet; | |
| 6033 event.bulletIndex = bulletIndex; | |
| 6034 notifyListeners(PaintObject, event); | |
| 6035 } | |
| 6036 } | |
| 6037 /** | |
| 6038 * Replaces the selection with the text on the <code>DND.CLIPBOARD</code> | |
| 6039 * clipboard or, if there is no selection, inserts the text at the current | |
| 6040 * caret offset. If the widget has the DWT.SINGLE style and the | |
| 6041 * clipboard text contains more than one line, only the first line without | |
| 6042 * line delimiters is inserted in the widget. | |
| 6043 * | |
| 6044 * @exception DWTException <ul> | |
| 6045 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6046 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6047 * </ul> | |
| 6048 */ | |
| 6049 public void paste(){ | |
| 6050 checkWidget(); | |
|
252
dffb802cad03
Fix: StyledText.paste() to check for empty clipboard result.
Frank Benoit <benoit@tionex.de>
parents:
246
diff
changeset
|
6051 String text = null; |
|
dffb802cad03
Fix: StyledText.paste() to check for empty clipboard result.
Frank Benoit <benoit@tionex.de>
parents:
246
diff
changeset
|
6052 if( auto o = cast(ArrayWrapperString) getClipboardContent(DND.CLIPBOARD)){ |
|
dffb802cad03
Fix: StyledText.paste() to check for empty clipboard result.
Frank Benoit <benoit@tionex.de>
parents:
246
diff
changeset
|
6053 text = o.array; |
|
dffb802cad03
Fix: StyledText.paste() to check for empty clipboard result.
Frank Benoit <benoit@tionex.de>
parents:
246
diff
changeset
|
6054 } |
| 155 | 6055 if (text !is null && text.length > 0) { |
| 6056 Event event = new Event(); | |
| 6057 event.start = selection.x; | |
| 6058 event.end = selection.y; | |
| 6059 event.text = getModelDelimitedText(text); | |
| 6060 sendKeyEvent(event); | |
| 6061 } | |
| 6062 } | |
| 6063 /** | |
| 6064 * Prints the widget's text to the default printer. | |
| 6065 * | |
| 6066 * @exception DWTException <ul> | |
| 6067 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6068 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6069 * </ul> | |
| 6070 */ | |
| 6071 public void print() { | |
| 6072 checkWidget(); | |
| 6073 Printer printer = new Printer(); | |
| 6074 StyledTextPrintOptions options = new StyledTextPrintOptions(); | |
| 6075 options.printTextForeground = true; | |
| 6076 options.printTextBackground = true; | |
| 6077 options.printTextFontStyle = true; | |
| 6078 options.printLineBackground = true; | |
| 6079 (new Printing(this, printer, options)).run(); | |
| 6080 printer.dispose(); | |
| 6081 } | |
| 6082 /** | |
| 6083 * Returns a runnable that will print the widget's text | |
| 6084 * to the specified printer. | |
| 6085 * <p> | |
| 6086 * The runnable may be run in a non-UI thread. | |
| 6087 * </p> | |
| 6088 * | |
| 6089 * @param printer the printer to print to | |
| 246 | 6090 * |
| 6091 * @return a <code>Runnable</code> for printing the receiver's text | |
| 6092 * | |
| 155 | 6093 * @exception DWTException <ul> |
| 6094 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6095 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6096 * </ul> | |
| 6097 * @exception IllegalArgumentException <ul> | |
| 6098 * <li>ERROR_NULL_ARGUMENT when printer is null</li> | |
| 6099 * </ul> | |
| 6100 */ | |
| 6101 public Runnable print(Printer printer) { | |
| 6102 checkWidget(); | |
| 6103 if (printer is null) { | |
| 6104 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6105 } | |
| 6106 StyledTextPrintOptions options = new StyledTextPrintOptions(); | |
| 6107 options.printTextForeground = true; | |
| 6108 options.printTextBackground = true; | |
| 6109 options.printTextFontStyle = true; | |
| 6110 options.printLineBackground = true; | |
| 6111 return print(printer, options); | |
| 6112 } | |
| 6113 /** | |
| 6114 * Returns a runnable that will print the widget's text | |
| 6115 * to the specified printer. | |
| 6116 * <p> | |
| 6117 * The runnable may be run in a non-UI thread. | |
| 6118 * </p> | |
| 6119 * | |
| 6120 * @param printer the printer to print to | |
| 6121 * @param options print options to use during printing | |
| 246 | 6122 * |
| 6123 * @return a <code>Runnable</code> for printing the receiver's text | |
| 6124 * | |
| 155 | 6125 * @exception DWTException <ul> |
| 6126 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6127 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6128 * </ul> | |
| 6129 * @exception IllegalArgumentException <ul> | |
| 6130 * <li>ERROR_NULL_ARGUMENT when printer or options is null</li> | |
| 6131 * </ul> | |
| 6132 * @since 2.1 | |
| 6133 */ | |
| 6134 public Runnable print(Printer printer, StyledTextPrintOptions options) { | |
| 6135 checkWidget(); | |
| 6136 if (printer is null || options is null) { | |
| 6137 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6138 } | |
| 6139 return new Printing(this, printer, options); | |
| 6140 } | |
| 6141 /** | |
| 6142 * Causes the entire bounds of the receiver to be marked | |
| 6143 * as needing to be redrawn. The next time a paint request | |
| 6144 * is processed, the control will be completely painted. | |
| 6145 * <p> | |
| 6146 * Recalculates the content width for all lines in the bounds. | |
| 6147 * When a <code>LineStyleListener</code> is used a redraw call | |
| 6148 * is the only notification to the widget that styles have changed | |
| 6149 * and that the content width may have changed. | |
| 6150 * </p> | |
| 6151 * | |
| 6152 * @exception DWTException <ul> | |
| 6153 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6154 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6155 * </ul> | |
| 6156 * | |
| 6157 * @see Control#update() | |
| 6158 */ | |
| 6159 public override void redraw() { | |
| 6160 super.redraw(); | |
| 6161 int itemCount = getPartialBottomIndex() - topIndex + 1; | |
| 6162 renderer.reset(topIndex, itemCount); | |
| 6163 renderer.calculate(topIndex, itemCount); | |
| 6164 setScrollBars(false); | |
| 6165 } | |
| 6166 /** | |
| 6167 * Causes the rectangular area of the receiver specified by | |
| 6168 * the arguments to be marked as needing to be redrawn. | |
| 6169 * The next time a paint request is processed, that area of | |
| 6170 * the receiver will be painted. If the <code>all</code> flag | |
| 6171 * is <code>true</code>, any children of the receiver which | |
| 6172 * intersect with the specified area will also paint their | |
| 6173 * intersecting areas. If the <code>all</code> flag is | |
| 6174 * <code>false</code>, the children will not be painted. | |
| 6175 * <p> | |
| 6176 * Marks the content width of all lines in the specified rectangle | |
| 6177 * as unknown. Recalculates the content width of all visible lines. | |
| 6178 * When a <code>LineStyleListener</code> is used a redraw call | |
| 6179 * is the only notification to the widget that styles have changed | |
| 6180 * and that the content width may have changed. | |
| 6181 * </p> | |
| 6182 * | |
| 6183 * @param x the x coordinate of the area to draw | |
| 6184 * @param y the y coordinate of the area to draw | |
| 6185 * @param width the width of the area to draw | |
| 6186 * @param height the height of the area to draw | |
| 6187 * @param all <code>true</code> if children should redraw, and <code>false</code> otherwise | |
| 6188 * | |
| 6189 * @exception DWTException <ul> | |
| 6190 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6191 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6192 * </ul> | |
| 6193 * | |
| 6194 * @see Control#update() | |
| 6195 */ | |
| 6196 public override void redraw(int x, int y, int width, int height, bool all) { | |
| 6197 super.redraw(x, y, width, height, all); | |
| 6198 if (height > 0) { | |
| 6199 int firstLine = getLineIndex(y); | |
| 6200 int lastLine = getLineIndex(y + height); | |
| 6201 resetCache(firstLine, lastLine - firstLine + 1); | |
| 6202 } | |
| 6203 } | |
| 6204 void redrawLines(int startLine, int lineCount) { | |
| 6205 // do nothing if redraw range is completely invisible | |
| 6206 int partialBottomIndex = getPartialBottomIndex(); | |
| 6207 if (startLine > partialBottomIndex || startLine + lineCount - 1 < topIndex) { | |
| 6208 return; | |
| 6209 } | |
| 6210 // only redraw visible lines | |
| 6211 if (startLine < topIndex) { | |
| 6212 lineCount -= topIndex - startLine; | |
| 6213 startLine = topIndex; | |
| 6214 } | |
| 6215 if (startLine + lineCount - 1 > partialBottomIndex) { | |
| 6216 lineCount = partialBottomIndex - startLine + 1; | |
| 6217 } | |
| 6218 startLine -= topIndex; | |
| 6219 int redrawTop = getLinePixel(startLine); | |
| 6220 int redrawBottom = getLinePixel(startLine + lineCount); | |
| 6221 int redrawWidth = clientAreaWidth - leftMargin - rightMargin; | |
| 6222 super.redraw(leftMargin, redrawTop, redrawWidth, redrawBottom - redrawTop, true); | |
| 6223 } | |
| 6224 void redrawLinesBullet (int[] redrawLines) { | |
| 6225 if (redrawLines is null) return; | |
| 6226 int topIndex = getPartialTopIndex(); | |
| 6227 int bottomIndex = getPartialBottomIndex(); | |
| 6228 for (int i = 0; i < redrawLines.length; i++) { | |
| 6229 int lineIndex = redrawLines[i]; | |
| 6230 if (!(topIndex <= lineIndex && lineIndex <= bottomIndex)) continue; | |
| 6231 int width = -1; | |
| 6232 Bullet bullet = renderer.getLineBullet(lineIndex, null); | |
| 6233 if (bullet !is null) { | |
| 6234 StyleRange style = bullet.style; | |
| 6235 GlyphMetrics metrics = style.metrics; | |
| 6236 width = metrics.width; | |
| 6237 } | |
| 6238 if (width is -1) width = getClientArea().width; | |
| 6239 int height = renderer.getLineHeight(lineIndex); | |
| 6240 int y = getLinePixel(lineIndex); | |
| 6241 super.redraw(0, y, width, height, false); | |
| 6242 } | |
| 6243 } | |
| 6244 /** | |
| 6245 * Redraws the specified text range. | |
| 6246 * | |
| 6247 * @param start offset of the first character to redraw | |
| 6248 * @param length number of characters to redraw | |
| 6249 * @param clearBackground true if the background should be cleared as | |
| 6250 * part of the redraw operation. If true, the entire redraw range will | |
| 6251 * be cleared before anything is redrawn. If the redraw range includes | |
| 6252 * the last character of a line (i.e., the entire line is redrawn) the | |
| 6253 * line is cleared all the way to the right border of the widget. | |
| 6254 * The redraw operation will be faster and smoother if clearBackground | |
| 6255 * is set to false. Whether or not the flag can be set to false depends | |
| 6256 * on the type of change that has taken place. If font styles or | |
| 6257 * background colors for the redraw range have changed, clearBackground | |
| 6258 * should be set to true. If only foreground colors have changed for | |
| 6259 * the redraw range, clearBackground can be set to false. | |
| 6260 * @exception DWTException <ul> | |
| 6261 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6262 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6263 * </ul> | |
| 6264 * @exception IllegalArgumentException <ul> | |
| 6265 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 6266 * </ul> | |
| 6267 */ | |
| 6268 public void redrawRange(int start, int length, bool clearBackground) { | |
| 6269 checkWidget(); | |
| 6270 int end = start + length; | |
| 6271 int contentLength = content.getCharCount(); | |
| 6272 if (start > end || start < 0 || end > contentLength) { | |
| 6273 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 6274 } | |
| 6275 int firstLine = content.getLineAtOffset(start); | |
| 6276 int lastLine = content.getLineAtOffset(end); | |
| 6277 resetCache(firstLine, lastLine - firstLine + 1); | |
| 6278 internalRedrawRange(start, length); | |
| 6279 } | |
| 6280 /** | |
| 6281 * Removes the specified bidirectional segment listener. | |
| 6282 * | |
| 246 | 6283 * @param listener the listener which should no longer be notified |
| 6284 * | |
| 155 | 6285 * @exception DWTException <ul> |
| 6286 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6287 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6288 * </ul> | |
| 6289 * @exception IllegalArgumentException <ul> | |
| 6290 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6291 * </ul> | |
| 246 | 6292 * |
| 155 | 6293 * @since 2.0 |
| 6294 */ | |
| 6295 public void removeBidiSegmentListener(BidiSegmentListener listener) { | |
| 6296 checkWidget(); | |
| 6297 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6298 removeListener(LineGetSegments, listener); | |
| 6299 } | |
| 6300 /** | |
| 6301 * Removes the specified extended modify listener. | |
| 6302 * | |
| 246 | 6303 * @param extendedModifyListener the listener which should no longer be notified |
| 6304 * | |
| 155 | 6305 * @exception DWTException <ul> |
| 6306 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6307 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6308 * </ul> | |
| 6309 * @exception IllegalArgumentException <ul> | |
| 6310 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6311 * </ul> | |
| 6312 */ | |
| 6313 public void removeExtendedModifyListener(ExtendedModifyListener extendedModifyListener) { | |
| 6314 checkWidget(); | |
| 6315 if (extendedModifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6316 removeListener(ExtendedModify, extendedModifyListener); | |
| 6317 } | |
| 6318 /** | |
| 6319 * Removes the specified line background listener. | |
| 6320 * | |
| 246 | 6321 * @param listener the listener which should no longer be notified |
| 6322 * | |
| 155 | 6323 * @exception DWTException <ul> |
| 6324 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6325 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6326 * </ul> | |
| 6327 * @exception IllegalArgumentException <ul> | |
| 6328 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6329 * </ul> | |
| 6330 */ | |
| 6331 public void removeLineBackgroundListener(LineBackgroundListener listener) { | |
| 6332 checkWidget(); | |
| 6333 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6334 removeListener(LineGetBackground, listener); | |
| 6335 } | |
| 6336 /** | |
| 6337 * Removes the specified line style listener. | |
| 6338 * | |
| 246 | 6339 * @param listener the listener which should no longer be notified |
| 6340 * | |
| 155 | 6341 * @exception DWTException <ul> |
| 6342 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6343 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6344 * </ul> | |
| 6345 * @exception IllegalArgumentException <ul> | |
| 6346 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6347 * </ul> | |
| 6348 */ | |
| 6349 public void removeLineStyleListener(LineStyleListener listener) { | |
| 6350 checkWidget(); | |
| 6351 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6352 removeListener(LineGetStyle, listener); | |
| 6353 } | |
| 6354 /** | |
| 6355 * Removes the specified modify listener. | |
| 6356 * | |
| 246 | 6357 * @param modifyListener the listener which should no longer be notified |
| 6358 * | |
| 155 | 6359 * @exception DWTException <ul> |
| 6360 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6361 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6362 * </ul> | |
| 6363 * @exception IllegalArgumentException <ul> | |
| 6364 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6365 * </ul> | |
| 6366 */ | |
| 6367 public void removeModifyListener(ModifyListener modifyListener) { | |
| 6368 checkWidget(); | |
| 6369 if (modifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6370 removeListener(DWT.Modify, modifyListener); | |
| 6371 } | |
| 6372 /** | |
| 6373 * Removes the specified listener. | |
| 6374 * | |
| 246 | 6375 * @param listener the listener which should no longer be notified |
| 6376 * | |
| 155 | 6377 * @exception DWTException <ul> |
| 6378 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6379 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6380 * </ul> | |
| 6381 * @exception IllegalArgumentException <ul> | |
| 6382 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6383 * </ul> | |
| 6384 * @since 3.2 | |
| 6385 */ | |
| 6386 public void removePaintObjectListener(PaintObjectListener listener) { | |
| 6387 checkWidget(); | |
| 6388 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6389 removeListener(PaintObject, listener); | |
| 6390 } | |
| 6391 /** | |
| 6392 * Removes the listener from the collection of listeners who will | |
| 6393 * be notified when the user changes the receiver's selection. | |
| 6394 * | |
| 6395 * @param listener the listener which should no longer be notified | |
| 6396 * | |
| 6397 * @exception IllegalArgumentException <ul> | |
| 6398 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 6399 * </ul> | |
| 6400 * @exception DWTException <ul> | |
| 6401 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6402 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6403 * </ul> | |
| 6404 * | |
| 6405 * @see SelectionListener | |
| 6406 * @see #addSelectionListener | |
| 6407 */ | |
| 6408 public void removeSelectionListener(SelectionListener listener) { | |
| 6409 checkWidget(); | |
| 6410 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6411 removeListener(DWT.Selection, listener); | |
| 6412 } | |
| 6413 /** | |
| 6414 * Removes the specified verify listener. | |
| 6415 * | |
| 246 | 6416 * @param verifyListener the listener which should no longer be notified |
| 6417 * | |
| 155 | 6418 * @exception DWTException <ul> |
| 6419 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6420 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6421 * </ul> | |
| 6422 * @exception IllegalArgumentException <ul> | |
| 6423 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6424 * </ul> | |
| 6425 */ | |
| 6426 public void removeVerifyListener(VerifyListener verifyListener) { | |
| 6427 checkWidget(); | |
| 6428 if (verifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6429 removeListener(DWT.Verify, verifyListener); | |
| 6430 } | |
| 6431 /** | |
| 6432 * Removes the specified key verify listener. | |
| 6433 * | |
| 246 | 6434 * @param listener the listener which should no longer be notified |
| 6435 * | |
| 155 | 6436 * @exception DWTException <ul> |
| 6437 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6438 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6439 * </ul> | |
| 6440 * @exception IllegalArgumentException <ul> | |
| 6441 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6442 * </ul> | |
| 6443 */ | |
| 6444 public void removeVerifyKeyListener(VerifyKeyListener listener) { | |
| 6445 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6446 removeListener(VerifyKey, listener); | |
| 6447 } | |
| 6448 /** | |
| 6449 * Removes the specified word movement listener. | |
| 6450 * | |
| 246 | 6451 * @param listener the listener which should no longer be notified |
| 6452 * | |
| 155 | 6453 * @exception DWTException <ul> |
| 6454 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6455 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6456 * </ul> | |
| 6457 * @exception IllegalArgumentException <ul> | |
| 6458 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6459 * </ul> | |
| 6460 * | |
| 6461 * @see MovementEvent | |
| 6462 * @see MovementListener | |
| 6463 * @see #addWordMovementListener | |
| 6464 * | |
| 6465 * @since 3.3 | |
| 6466 */ | |
| 6467 | |
| 6468 public void removeWordMovementListener(MovementListener listener) { | |
| 6469 checkWidget(); | |
| 6470 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6471 removeListener(WordNext, listener); | |
| 6472 removeListener(WordPrevious, listener); | |
| 6473 } | |
| 6474 /** | |
| 6475 * Replaces the styles in the given range with new styles. This method | |
| 6476 * effectively deletes the styles in the given range and then adds the | |
| 6477 * the new styles. | |
| 6478 * <p> | |
| 6479 * Note: Because a StyleRange includes the start and length, the | |
| 6480 * same instance cannot occur multiple times in the array of styles. | |
| 6481 * If the same style attributes, such as font and color, occur in | |
| 6482 * multiple StyleRanges, <code>setStyleRanges(int, int, int[], StyleRange[])</code> | |
| 6483 * can be used to share styles and reduce memory usage. | |
| 6484 * </p><p> | |
| 6485 * Should not be called if a LineStyleListener has been set since the | |
| 6486 * listener maintains the styles. | |
| 6487 * </p> | |
| 6488 * | |
| 6489 * @param start offset of first character where styles will be deleted | |
| 6490 * @param length length of the range to delete styles in | |
| 6491 * @param ranges StyleRange objects containing the new style information. | |
| 6492 * The ranges should not overlap and should be within the specified start | |
| 6493 * and length. The style rendering is undefined if the ranges do overlap | |
| 6494 * or are ill-defined. Must not be null. | |
| 6495 * @exception DWTException <ul> | |
| 6496 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6497 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6498 * </ul> | |
| 6499 * @exception IllegalArgumentException <ul> | |
| 6500 * <li>ERROR_INVALID_RANGE when either start or end is outside the valid range (0 <= offset <= getCharCount())</li> | |
| 6501 * </ul> | |
| 6502 * | |
| 6503 * @since 2.0 | |
| 6504 * | |
| 6505 * @see #setStyleRanges(int, int, int[], StyleRange[]) | |
| 6506 */ | |
| 6507 public void replaceStyleRanges(int start, int length, StyleRange[] ranges) { | |
| 6508 checkWidget(); | |
| 6509 if (isListening(LineGetStyle)) return; | |
|
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6510 // DWT extension: allow null array |
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6511 //if (ranges is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
| 155 | 6512 setStyleRanges(start, length, null, ranges, false); |
| 6513 } | |
| 6514 /** | |
| 6515 * Replaces the given text range with new text. | |
| 6516 * If the widget has the DWT.SINGLE style and "text" contains more than | |
| 6517 * one line, only the first line is rendered but the text is stored | |
| 6518 * unchanged. A subsequent call to getText will return the same text | |
| 6519 * that was set. Note that only a single line of text should be set when | |
| 6520 * the DWT.SINGLE style is used. | |
| 6521 * <p> | |
| 6522 * <b>NOTE:</b> During the replace operation the current selection is | |
| 6523 * changed as follows: | |
| 6524 * <ul> | |
| 6525 * <li>selection before replaced text: selection unchanged | |
| 6526 * <li>selection after replaced text: adjust the selection so that same text | |
| 6527 * remains selected | |
| 6528 * <li>selection intersects replaced text: selection is cleared and caret | |
| 6529 * is placed after inserted text | |
| 6530 * </ul> | |
| 6531 * </p> | |
| 6532 * | |
| 6533 * @param start offset of first character to replace | |
| 6534 * @param length number of characters to replace. Use 0 to insert text | |
| 6535 * @param text new text. May be empty to delete text. | |
| 6536 * @exception DWTException <ul> | |
| 6537 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6538 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6539 * </ul> | |
| 6540 * @exception IllegalArgumentException <ul> | |
| 6541 * <li>ERROR_INVALID_RANGE when either start or end is outside the valid range (0 <= offset <= getCharCount())</li> | |
| 6542 * <li>ERROR_INVALID_ARGUMENT when either start or end is inside a multi byte line delimiter. | |
| 6543 * 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> | |
| 6544 * </ul> | |
| 6545 */ | |
|
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6546 public void replaceTextRange(int start, int length, String text) { |
| 155 | 6547 checkWidget(); |
|
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6548 // DWT extension: allow null string |
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6549 //if (text is null) { |
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6550 // DWT.error(DWT.ERROR_NULL_ARGUMENT); |
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6551 //} |
| 155 | 6552 int contentLength = getCharCount(); |
| 6553 int end = start + length; | |
| 6554 if (start > end || start < 0 || end > contentLength) { | |
| 6555 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 6556 } | |
| 6557 Event event = new Event(); | |
| 6558 event.start = start; | |
| 6559 event.end = end; | |
| 6560 event.text = text; | |
| 6561 modifyContent(event, false); | |
| 6562 } | |
| 6563 /** | |
| 6564 * Resets the caret position, selection and scroll offsets. Recalculate | |
| 6565 * the content width and scroll bars. Redraw the widget. | |
| 6566 */ | |
| 6567 void reset() { | |
| 6568 ScrollBar verticalBar = getVerticalBar(); | |
| 6569 ScrollBar horizontalBar = getHorizontalBar(); | |
| 6570 caretOffset = 0; | |
| 6571 topIndex = 0; | |
| 6572 topIndexY = 0; | |
| 6573 verticalScrollOffset = 0; | |
| 6574 horizontalScrollOffset = 0; | |
| 6575 resetSelection(); | |
| 6576 renderer.setContent(content); | |
| 6577 if (verticalBar !is null) { | |
| 6578 verticalBar.setSelection(0); | |
| 6579 } | |
| 6580 if (horizontalBar !is null) { | |
| 6581 horizontalBar.setSelection(0); | |
| 6582 } | |
| 6583 resetCache(0, 0); | |
| 6584 setCaretLocation(); | |
| 6585 super.redraw(); | |
| 6586 } | |
| 6587 void resetCache(int firstLine, int count) { | |
| 6588 int maxLineIndex = renderer.maxWidthLineIndex; | |
| 6589 renderer.reset(firstLine, count); | |
| 6590 renderer.calculateClientArea(); | |
| 6591 if (0 <= maxLineIndex && maxLineIndex < content.getLineCount()) { | |
| 6592 renderer.calculate(maxLineIndex, 1); | |
| 6593 } | |
| 6594 setScrollBars(true); | |
| 6595 if (!isFixedLineHeight()) { | |
| 6596 if (topIndex > firstLine) { | |
| 6597 verticalScrollOffset = -1; | |
| 6598 } | |
| 6599 renderer.calculateIdle(); | |
| 6600 } | |
| 6601 } | |
| 6602 /** | |
| 6603 * Resets the selection. | |
| 6604 */ | |
| 6605 void resetSelection() { | |
| 6606 selection.x = selection.y = caretOffset; | |
| 6607 selectionAnchor = -1; | |
| 6608 } | |
| 6609 | |
| 6610 public override void scroll(int destX, int destY, int x, int y, int width, int height, bool all) { | |
| 6611 super.scroll(destX, destY, x, y, width, height, false); | |
| 6612 if (all) { | |
| 6613 int deltaX = destX - x, deltaY = destY - y; | |
| 6614 Control[] children = getChildren(); | |
| 6615 for (int i=0; i<children.length; i++) { | |
| 6616 Control child = children[i]; | |
| 6617 Rectangle rect = child.getBounds(); | |
| 6618 child.setLocation(rect.x + deltaX, rect.y + deltaY); | |
| 6619 } | |
| 6620 } | |
| 6621 } | |
| 6622 | |
| 6623 /** | |
| 6624 * Scrolls the widget horizontally. | |
| 6625 * | |
| 6626 * @param pixels number of pixels to scroll, > 0 = scroll left, | |
| 6627 * < 0 scroll right | |
| 6628 * @param adjustScrollBar | |
| 6629 * true= the scroll thumb will be moved to reflect the new scroll offset. | |
| 6630 * false = the scroll thumb will not be moved | |
| 6631 * @return | |
| 6632 * true=the widget was scrolled | |
| 6633 * false=the widget was not scrolled, the given offset is not valid. | |
| 6634 */ | |
| 6635 bool scrollHorizontal(int pixels, bool adjustScrollBar) { | |
| 6636 if (pixels is 0) { | |
| 6637 return false; | |
| 6638 } | |
| 6639 ScrollBar horizontalBar = getHorizontalBar(); | |
| 6640 if (horizontalBar !is null && adjustScrollBar) { | |
| 6641 horizontalBar.setSelection(horizontalScrollOffset + pixels); | |
| 6642 } | |
| 6643 int scrollHeight = clientAreaHeight - topMargin - bottomMargin; | |
| 6644 if (pixels > 0) { | |
| 6645 int sourceX = leftMargin + pixels; | |
| 6646 int scrollWidth = clientAreaWidth - sourceX - rightMargin; | |
| 6647 if (scrollWidth > 0) { | |
| 6648 scroll(leftMargin, topMargin, sourceX, topMargin, scrollWidth, scrollHeight, true); | |
| 6649 } | |
| 6650 if (sourceX > scrollWidth) { | |
| 6651 super.redraw(leftMargin + scrollWidth, topMargin, pixels - scrollWidth, scrollHeight, true); | |
| 6652 } | |
| 6653 } else { | |
| 6654 int destinationX = leftMargin - pixels; | |
| 6655 int scrollWidth = clientAreaWidth - destinationX - rightMargin; | |
| 6656 if (scrollWidth > 0) { | |
| 6657 scroll(destinationX, topMargin, leftMargin, topMargin, scrollWidth, scrollHeight, true); | |
| 6658 } | |
| 6659 if (destinationX > scrollWidth) { | |
| 6660 super.redraw(leftMargin + scrollWidth, topMargin, -pixels - scrollWidth, scrollHeight, true); | |
| 6661 } | |
| 6662 } | |
| 6663 horizontalScrollOffset += pixels; | |
| 6664 setCaretLocation(); | |
| 6665 return true; | |
| 6666 } | |
| 6667 /** | |
| 6668 * Scrolls the widget vertically. | |
| 6669 * | |
| 6670 * @param pixel the new vertical scroll offset | |
| 6671 * @param adjustScrollBar | |
| 6672 * true= the scroll thumb will be moved to reflect the new scroll offset. | |
| 6673 * false = the scroll thumb will not be moved | |
| 6674 * @return | |
| 6675 * true=the widget was scrolled | |
| 6676 * false=the widget was not scrolled | |
| 6677 */ | |
| 6678 bool scrollVertical(int pixels, bool adjustScrollBar) { | |
| 6679 if (pixels is 0) { | |
| 6680 return false; | |
| 6681 } | |
| 6682 if (verticalScrollOffset !is -1) { | |
| 6683 ScrollBar verticalBar = getVerticalBar(); | |
| 6684 if (verticalBar !is null && adjustScrollBar) { | |
| 6685 verticalBar.setSelection(verticalScrollOffset + pixels); | |
| 6686 } | |
| 6687 int scrollWidth = clientAreaWidth - leftMargin - rightMargin; | |
| 6688 if (pixels > 0) { | |
| 6689 int sourceY = topMargin + pixels; | |
| 6690 int scrollHeight = clientAreaHeight - sourceY - bottomMargin; | |
| 6691 if (scrollHeight > 0) { | |
| 6692 scroll(leftMargin, topMargin, leftMargin, sourceY, scrollWidth, scrollHeight, true); | |
| 6693 } | |
| 6694 if (sourceY > scrollHeight) { | |
| 6695 int redrawY = Math.max(0, topMargin + scrollHeight); | |
| 6696 int redrawHeight = Math.min(clientAreaHeight, pixels - scrollHeight); | |
| 6697 super.redraw(leftMargin, redrawY, scrollWidth, redrawHeight, true); | |
| 6698 } | |
| 6699 } else { | |
| 6700 int destinationY = topMargin - pixels; | |
| 6701 int scrollHeight = clientAreaHeight - destinationY - bottomMargin; | |
| 6702 if (scrollHeight > 0) { | |
| 6703 scroll(leftMargin, destinationY, leftMargin, topMargin, scrollWidth, scrollHeight, true); | |
| 6704 } | |
| 6705 if (destinationY > scrollHeight) { | |
| 6706 int redrawY = Math.max(0, topMargin + scrollHeight); | |
| 6707 int redrawHeight = Math.min(clientAreaHeight, -pixels - scrollHeight); | |
| 6708 super.redraw(leftMargin, redrawY, scrollWidth, redrawHeight, true); | |
| 6709 } | |
| 6710 } | |
| 6711 verticalScrollOffset += pixels; | |
| 6712 calculateTopIndex(pixels); | |
| 6713 } else { | |
| 6714 calculateTopIndex(pixels); | |
| 6715 super.redraw(); | |
| 6716 } | |
| 6717 setCaretLocation(); | |
| 6718 return true; | |
| 6719 } | |
| 6720 void scrollText(int srcY, int destY) { | |
| 6721 if (srcY is destY) return; | |
| 6722 int deltaY = destY - srcY; | |
| 6723 int scrollWidth = clientAreaWidth - leftMargin - rightMargin, scrollHeight; | |
| 6724 if (deltaY > 0) { | |
| 6725 scrollHeight = clientAreaHeight - srcY - bottomMargin; | |
| 6726 } else { | |
| 6727 scrollHeight = clientAreaHeight - destY - bottomMargin; | |
| 6728 } | |
| 6729 scroll(leftMargin, destY, leftMargin, srcY, scrollWidth, scrollHeight, true); | |
| 6730 if ((0 < srcY + scrollHeight) && (topMargin > srcY)) { | |
| 6731 super.redraw(leftMargin, deltaY, scrollWidth, topMargin, false); | |
| 6732 } | |
| 6733 if ((0 < destY + scrollHeight) && (topMargin > destY)) { | |
| 6734 super.redraw(leftMargin, 0, scrollWidth, topMargin, false); | |
| 6735 } | |
| 6736 if ((clientAreaHeight - bottomMargin < srcY + scrollHeight) && (clientAreaHeight > srcY)) { | |
| 6737 super.redraw(leftMargin, clientAreaHeight - bottomMargin + deltaY, scrollWidth, bottomMargin, false); | |
| 6738 } | |
| 6739 if ((clientAreaHeight - bottomMargin < destY + scrollHeight) && (clientAreaHeight > destY)) { | |
| 6740 super.redraw(leftMargin, clientAreaHeight - bottomMargin, scrollWidth, bottomMargin, false); | |
| 6741 } | |
| 6742 } | |
| 6743 /** | |
| 6744 * Selects all the text. | |
| 6745 * | |
| 6746 * @exception DWTException <ul> | |
| 6747 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6748 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6749 * </ul> | |
| 6750 */ | |
| 6751 public void selectAll() { | |
| 6752 checkWidget(); | |
| 6753 setSelection(0, Math.max(getCharCount(),0)); | |
| 6754 } | |
| 6755 /** | |
| 6756 * Replaces/inserts text as defined by the event. | |
| 6757 * | |
| 6758 * @param event the text change event. | |
| 6759 * <ul> | |
| 6760 * <li>event.start - the replace start offset</li> | |
| 6761 * <li>event.end - the replace end offset</li> | |
| 6762 * <li>event.text - the new text</li> | |
| 6763 * </ul> | |
| 6764 */ | |
| 6765 void sendKeyEvent(Event event) { | |
| 6766 if (editable) { | |
| 6767 modifyContent(event, true); | |
| 6768 } | |
| 6769 } | |
| 6770 /** | |
| 6771 * Returns a StyledTextEvent that can be used to request data such | |
| 6772 * as styles and background color for a line. | |
| 6773 * <p> | |
| 6774 * The specified line may be a visual (wrapped) line if in word | |
| 6775 * wrap mode. The returned object will always be for a logical | |
| 6776 * (unwrapped) line. | |
| 6777 * </p> | |
| 6778 * | |
| 6779 * @param lineOffset offset of the line. This may be the offset of | |
| 6780 * a visual line if the widget is in word wrap mode. | |
| 6781 * @param line line text. This may be the text of a visual line if | |
| 6782 * the widget is in word wrap mode. | |
| 6783 * @return StyledTextEvent that can be used to request line data | |
| 6784 * for the given line. | |
| 6785 */ | |
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6786 StyledTextEvent sendLineEvent(int eventType, int lineOffset, String line) { |
| 155 | 6787 StyledTextEvent event = null; |
| 6788 if (isListening(eventType)) { | |
| 6789 event = new StyledTextEvent(content); | |
| 6790 event.detail = lineOffset; | |
| 6791 event.text = line; | |
| 6792 event.alignment = alignment; | |
| 6793 event.indent = indent; | |
| 6794 event.justify = justify; | |
| 6795 notifyListeners(eventType, event); | |
| 6796 } | |
| 6797 return event; | |
| 6798 } | |
| 6799 void sendModifyEvent(Event event) { | |
| 6800 Accessible accessible = getAccessible(); | |
| 6801 if (event.text.length is 0) { | |
| 6802 accessible.textChanged(ACC.TEXT_DELETE, event.start, event.end - event.start); | |
| 6803 } else { | |
| 6804 if (event.start is event.end) { | |
| 6805 accessible.textChanged(ACC.TEXT_INSERT, event.start, event.text.length); | |
| 6806 } else { | |
| 6807 accessible.textChanged(ACC.TEXT_DELETE, event.start, event.end - event.start); | |
| 6808 accessible.textChanged(ACC.TEXT_INSERT, event.start, event.text.length); | |
| 6809 } | |
| 6810 } | |
| 6811 notifyListeners(DWT.Modify, event); | |
| 6812 } | |
| 6813 /** | |
| 6814 * Sends the specified selection event. | |
| 6815 */ | |
| 6816 void sendSelectionEvent() { | |
| 6817 getAccessible().textSelectionChanged(); | |
| 6818 Event event = new Event(); | |
| 6819 event.x = selection.x; | |
| 6820 event.y = selection.y; | |
| 6821 notifyListeners(DWT.Selection, event); | |
| 6822 } | |
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6823 int sendWordBoundaryEvent(int eventType, int movement, int offset, int newOffset, String lineText, int lineOffset) { |
| 155 | 6824 if (isListening(eventType)) { |
| 6825 StyledTextEvent event = new StyledTextEvent(content); | |
| 6826 event.detail = lineOffset; | |
| 6827 event.text = lineText; | |
| 6828 event.count = movement; | |
| 6829 event.start = offset; | |
| 6830 event.end = newOffset; | |
| 6831 notifyListeners(eventType, event); | |
| 6832 offset = event.end; | |
| 6833 if (offset !is newOffset) { | |
| 6834 int length = getCharCount(); | |
| 6835 if (offset < 0) { | |
| 6836 offset = 0; | |
| 6837 } else if (offset > length) { | |
| 6838 offset = length; | |
| 6839 } else { | |
| 6840 if (isLineDelimiter(offset)) { | |
| 6841 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 6842 } | |
| 6843 } | |
| 6844 } | |
| 6845 return offset; | |
| 6846 } | |
| 6847 return newOffset; | |
| 6848 } | |
| 6849 /** | |
| 6850 * Sets the alignment of the widget. The argument should be one of <code>DWT.LEFT</code>, | |
| 6851 * <code>DWT.CENTER</code> or <code>DWT.RIGHT</code>. The alignment applies for all lines. | |
| 213 | 6852 * </p><p> |
| 6853 * Note that if <code>DWT.MULTI</code> is set, then <code>DWT.WRAP</code> must also be set | |
| 6854 * in order to stabilize the right edge before setting alignment. | |
| 6855 * </p> | |
| 155 | 6856 * |
| 6857 * @param alignment the new alignment | |
| 6858 * | |
| 6859 * @exception DWTException <ul> | |
| 6860 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6861 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6862 * </ul> | |
| 6863 * | |
| 6864 * @see #setLineAlignment(int, int, int) | |
| 6865 * | |
| 6866 * @since 3.2 | |
| 6867 */ | |
| 6868 public void setAlignment(int alignment) { | |
| 6869 checkWidget(); | |
| 6870 alignment &= (DWT.LEFT | DWT.RIGHT | DWT.CENTER); | |
| 6871 if (alignment is 0 || this.alignment is alignment) return; | |
| 6872 this.alignment = alignment; | |
| 6873 resetCache(0, content.getLineCount()); | |
| 6874 setCaretLocation(); | |
| 6875 super.redraw(); | |
| 6876 } | |
| 6877 /** | |
| 6878 * @see Control#setBackground(Color) | |
| 6879 */ | |
| 6880 public override void setBackground(Color color) { | |
| 6881 checkWidget(); | |
| 6882 background = color; | |
| 213 | 6883 super.setBackground(color); |
| 155 | 6884 super.redraw(); |
| 6885 } | |
| 6886 /** | |
| 6887 * Sets the receiver's caret. Set the caret's height and location. | |
| 6888 * | |
| 6889 * </p> | |
| 6890 * @param caret the new caret for the receiver | |
| 6891 * | |
| 6892 * @exception DWTException <ul> | |
| 6893 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6894 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6895 * </ul> | |
| 6896 */ | |
| 6897 public override void setCaret(Caret caret) { | |
| 6898 checkWidget (); | |
| 6899 super.setCaret(caret); | |
| 6900 caretDirection = DWT.NULL; | |
| 6901 if (caret !is null) { | |
| 6902 setCaretLocation(); | |
| 6903 } | |
| 6904 } | |
| 6905 /** | |
| 6906 * Sets the BIDI coloring mode. When true the BIDI text display | |
| 6907 * algorithm is applied to segments of text that are the same | |
| 6908 * color. | |
| 6909 * | |
| 6910 * @param mode the new coloring mode | |
| 6911 * @exception DWTException <ul> | |
| 6912 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6913 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6914 * </ul> | |
| 6915 * | |
| 6916 * @deprecated use BidiSegmentListener instead. | |
| 6917 */ | |
| 6918 public void setBidiColoring(bool mode) { | |
| 6919 checkWidget(); | |
| 6920 bidiColoring = mode; | |
| 6921 } | |
| 6922 /** | |
| 6923 * Moves the Caret to the current caret offset. | |
| 6924 */ | |
| 6925 void setCaretLocation() { | |
| 6926 Point newCaretPos = getPointAtOffset(caretOffset); | |
| 6927 setCaretLocation(newCaretPos, getCaretDirection()); | |
| 6928 } | |
| 6929 void setCaretLocation(Point location, int direction) { | |
| 6930 Caret caret = getCaret(); | |
| 6931 if (caret !is null) { | |
| 6932 bool isDefaultCaret = caret is defaultCaret; | |
| 6933 int lineHeight = renderer.getLineHeight(); | |
| 6934 int caretHeight = lineHeight; | |
| 6935 if (!isFixedLineHeight() && isDefaultCaret) { | |
| 6936 caretHeight = getBoundsAtOffset(caretOffset).height; | |
| 6937 if (caretHeight !is lineHeight) { | |
| 6938 direction = DWT.DEFAULT; | |
| 6939 } | |
| 6940 } | |
| 6941 int imageDirection = direction; | |
| 6942 if (isMirrored()) { | |
| 6943 if (imageDirection is DWT.LEFT) { | |
| 6944 imageDirection = DWT.RIGHT; | |
| 6945 } else if (imageDirection is DWT.RIGHT) { | |
| 6946 imageDirection = DWT.LEFT; | |
| 6947 } | |
| 6948 } | |
| 6949 if (isDefaultCaret && imageDirection is DWT.RIGHT) { | |
| 6950 location.x -= (caret.getSize().x - 1); | |
| 6951 } | |
| 6952 if (isDefaultCaret) { | |
| 213 | 6953 caret.setBounds(location.x, location.y, caretWidth, caretHeight); |
| 155 | 6954 } else { |
| 6955 caret.setLocation(location); | |
| 6956 } | |
| 6957 getAccessible().textCaretMoved(getCaretOffset()); | |
| 6958 if (direction !is caretDirection) { | |
| 6959 caretDirection = direction; | |
| 6960 if (isDefaultCaret) { | |
| 6961 if (imageDirection is DWT.DEFAULT) { | |
| 6962 defaultCaret.setImage(null); | |
| 6963 } else if (imageDirection is DWT.LEFT) { | |
| 6964 defaultCaret.setImage(leftCaretBitmap); | |
| 6965 } else if (imageDirection is DWT.RIGHT) { | |
| 6966 defaultCaret.setImage(rightCaretBitmap); | |
| 6967 } | |
| 6968 } | |
| 6969 if (caretDirection is DWT.LEFT) { | |
| 6970 BidiUtil.setKeyboardLanguage(BidiUtil.KEYBOARD_NON_BIDI); | |
| 6971 } else if (caretDirection is DWT.RIGHT) { | |
| 6972 BidiUtil.setKeyboardLanguage(BidiUtil.KEYBOARD_BIDI); | |
| 6973 } | |
| 6974 } | |
| 6975 } | |
| 6976 columnX = location.x; | |
| 6977 } | |
| 6978 /** | |
| 6979 * Sets the caret offset. | |
| 6980 * | |
| 6981 * @param offset caret offset, relative to the first character in the text. | |
| 6982 * @exception DWTException <ul> | |
| 6983 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6984 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6985 * </ul> | |
| 6986 * @exception IllegalArgumentException <ul> | |
| 6987 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 6988 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 6989 * </ul> | |
| 6990 */ | |
| 6991 public void setCaretOffset(int offset) { | |
| 6992 checkWidget(); | |
| 6993 int length = getCharCount(); | |
| 6994 if (length > 0 && offset !is caretOffset) { | |
| 6995 if (offset < 0) { | |
| 6996 caretOffset = 0; | |
| 6997 } else if (offset > length) { | |
| 6998 caretOffset = length; | |
| 6999 } else { | |
| 7000 if (isLineDelimiter(offset)) { | |
| 7001 // offset is inside a multi byte line delimiter. This is an | |
| 7002 // illegal operation and an exception is thrown. Fixes 1GDKK3R | |
| 7003 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7004 } | |
| 7005 caretOffset = offset; | |
| 7006 } | |
| 213 | 7007 caretAlignment = PREVIOUS_OFFSET_TRAILING; |
| 155 | 7008 // clear the selection if the caret is moved. |
| 7009 // don't notify listeners about the selection change. | |
| 7010 clearSelection(false); | |
| 7011 } | |
| 7012 setCaretLocation(); | |
| 7013 } | |
| 7014 /** | |
| 7015 * Copies the specified text range to the clipboard. The text will be placed | |
| 7016 * in the clipboard in plain text format and RTF format. | |
| 7017 * | |
| 7018 * @param start start index of the text | |
| 7019 * @param length length of text to place in clipboard | |
| 7020 * | |
| 7021 * @exception DWTError, see Clipboard.setContents | |
| 7022 * @see dwt.dnd.Clipboard#setContents | |
| 7023 */ | |
| 7024 void setClipboardContent(int start, int length, int clipboardType) { | |
| 7025 if (clipboardType is DND.SELECTION_CLIPBOARD && !(IS_MOTIF || IS_GTK)) return; | |
| 7026 TextTransfer plainTextTransfer = TextTransfer.getInstance(); | |
| 7027 TextWriter plainTextWriter = new TextWriter(start, length); | |
|
212
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Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
7028 String plainText = getPlatformDelimitedText(plainTextWriter); |
| 155 | 7029 Object[] data; |
| 7030 Transfer[] types; | |
| 7031 if (clipboardType is DND.SELECTION_CLIPBOARD) { | |
| 7032 data = [ cast(Object) new ArrayWrapperString(plainText) ]; | |
| 7033 types = [plainTextTransfer]; | |
| 7034 } else { | |
| 7035 RTFTransfer rtfTransfer = RTFTransfer.getInstance(); | |
| 7036 RTFWriter rtfWriter = new RTFWriter(start, length); | |
|
212
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Frank Benoit <benoit@tionex.de>
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diff
changeset
|
7037 String rtfText = getPlatformDelimitedText(rtfWriter); |
| 155 | 7038 data = [ cast(Object) new ArrayWrapperString(rtfText), new ArrayWrapperString(plainText) ]; |
| 7039 types = [ cast(Transfer)rtfTransfer, plainTextTransfer]; | |
| 7040 } | |
| 7041 clipboard.setContents(data, types, clipboardType); | |
| 7042 } | |
| 7043 /** | |
| 7044 * Sets the content implementation to use for text storage. | |
| 7045 * | |
| 7046 * @param newContent StyledTextContent implementation to use for text storage. | |
| 7047 * @exception DWTException <ul> | |
| 7048 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7049 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7050 * </ul> | |
| 7051 * @exception IllegalArgumentException <ul> | |
| 7052 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 7053 * </ul> | |
| 7054 */ | |
| 7055 public void setContent(StyledTextContent newContent) { | |
| 7056 checkWidget(); | |
| 7057 if (newContent is null) { | |
| 7058 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 7059 } | |
| 7060 if (content !is null) { | |
| 7061 content.removeTextChangeListener(textChangeListener); | |
| 7062 } | |
| 7063 content = newContent; | |
| 7064 content.addTextChangeListener(textChangeListener); | |
| 7065 reset(); | |
| 7066 } | |
| 7067 /** | |
| 7068 * Sets the receiver's cursor to the cursor specified by the | |
| 7069 * argument. Overridden to handle the null case since the | |
| 7070 * StyledText widget uses an ibeam as its default cursor. | |
| 7071 * | |
| 7072 * @see Control#setCursor(Cursor) | |
| 7073 */ | |
| 7074 public override void setCursor (Cursor cursor) { | |
| 7075 if (cursor is null) { | |
| 7076 Display display = getDisplay(); | |
| 7077 super.setCursor(display.getSystemCursor(DWT.CURSOR_IBEAM)); | |
| 7078 } else { | |
| 7079 super.setCursor(cursor); | |
| 7080 } | |
| 7081 } | |
| 7082 /** | |
| 7083 * Sets whether the widget : double click mouse behavior. | |
| 7084 * </p> | |
| 7085 * | |
| 7086 * @param enable if true double clicking a word selects the word, if false | |
| 7087 * double clicks have the same effect as regular mouse clicks. | |
| 7088 * @exception DWTException <ul> | |
| 7089 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7090 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7091 * </ul> | |
| 7092 */ | |
| 7093 public void setDoubleClickEnabled(bool enable) { | |
| 7094 checkWidget(); | |
| 7095 doubleClickEnabled = enable; | |
| 7096 } | |
| 7097 public override void setDragDetect (bool dragDetect_) { | |
| 7098 checkWidget (); | |
| 7099 this.dragDetect_ = dragDetect_; | |
| 7100 } | |
| 7101 /** | |
| 7102 * Sets whether the widget content can be edited. | |
| 7103 * </p> | |
| 7104 * | |
| 7105 * @param editable if true content can be edited, if false content can not be | |
| 7106 * edited | |
| 7107 * @exception DWTException <ul> | |
| 7108 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7109 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7110 * </ul> | |
| 7111 */ | |
| 7112 public void setEditable(bool editable) { | |
| 7113 checkWidget(); | |
| 7114 this.editable = editable; | |
| 7115 } | |
| 7116 /** | |
| 7117 * Sets a new font to render text with. | |
| 7118 * <p> | |
| 7119 * <b>NOTE:</b> Italic fonts are not supported unless they have no overhang | |
| 7120 * and the same baseline as regular fonts. | |
| 7121 * </p> | |
| 7122 * | |
| 7123 * @param font new font | |
| 7124 * @exception DWTException <ul> | |
| 7125 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7126 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7127 * </ul> | |
| 7128 */ | |
| 7129 public override void setFont(Font font) { | |
| 7130 checkWidget(); | |
| 7131 int oldLineHeight = renderer.getLineHeight(); | |
| 7132 super.setFont(font); | |
| 7133 renderer.setFont(getFont(), tabLength); | |
| 7134 // keep the same top line visible. fixes 5815 | |
| 7135 if (isFixedLineHeight()) { | |
| 7136 int lineHeight = renderer.getLineHeight(); | |
| 7137 if (lineHeight !is oldLineHeight) { | |
| 7138 int vscroll = (getVerticalScrollOffset() * lineHeight / oldLineHeight) - getVerticalScrollOffset(); | |
| 7139 scrollVertical(vscroll, true); | |
| 7140 } | |
| 7141 } | |
| 7142 resetCache(0, content.getLineCount()); | |
| 7143 claimBottomFreeSpace(); | |
| 7144 calculateScrollBars(); | |
| 7145 if (isBidiCaret()) createCaretBitmaps(); | |
| 7146 caretDirection = DWT.NULL; | |
| 7147 setCaretLocation(); | |
| 7148 super.redraw(); | |
| 7149 } | |
| 7150 public override void setForeground(Color color) { | |
| 7151 checkWidget(); | |
| 7152 foreground = color; | |
| 7153 super.setForeground(getForeground()); | |
| 7154 super.redraw(); | |
| 7155 } | |
| 7156 /** | |
| 7157 * Sets the horizontal scroll offset relative to the start of the line. | |
| 7158 * Do nothing if there is no text set. | |
| 7159 * <p> | |
| 7160 * <b>NOTE:</b> The horizontal index is reset to 0 when new text is set in the | |
| 7161 * widget. | |
| 7162 * </p> | |
| 7163 * | |
| 7164 * @param offset horizontal scroll offset relative to the start | |
| 7165 * of the line, measured in character increments starting at 0, if | |
| 7166 * equal to 0 the content is not scrolled, if > 0 = the content is scrolled. | |
| 7167 * @exception DWTException <ul> | |
| 7168 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7169 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7170 * </ul> | |
| 7171 */ | |
| 7172 public void setHorizontalIndex(int offset) { | |
| 7173 checkWidget(); | |
| 7174 if (getCharCount() is 0) { | |
| 7175 return; | |
| 7176 } | |
| 7177 if (offset < 0) { | |
| 7178 offset = 0; | |
| 7179 } | |
| 7180 offset *= getHorizontalIncrement(); | |
| 7181 // allow any value if client area width is unknown or 0. | |
| 7182 // offset will be checked in resize handler. | |
| 7183 // don't use isVisible since width is known even if widget | |
| 7184 // is temporarily invisible | |
| 7185 if (clientAreaWidth > 0) { | |
| 7186 int width = renderer.getWidth(); | |
| 7187 // prevent scrolling if the content fits in the client area. | |
| 7188 // align end of longest line with right border of client area | |
| 7189 // if offset is out of range. | |
| 7190 if (offset > width - clientAreaWidth) { | |
| 7191 offset = Math.max(0, width - clientAreaWidth); | |
| 7192 } | |
| 7193 } | |
| 7194 scrollHorizontal(offset - horizontalScrollOffset, true); | |
| 7195 } | |
| 7196 /** | |
| 7197 * Sets the horizontal pixel offset relative to the start of the line. | |
| 7198 * Do nothing if there is no text set. | |
| 7199 * <p> | |
| 7200 * <b>NOTE:</b> The horizontal pixel offset is reset to 0 when new text | |
| 7201 * is set in the widget. | |
| 7202 * </p> | |
| 7203 * | |
| 7204 * @param pixel horizontal pixel offset relative to the start | |
| 7205 * of the line. | |
| 7206 * @exception DWTException <ul> | |
| 7207 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7208 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7209 * </ul> | |
| 7210 * @since 2.0 | |
| 7211 */ | |
| 7212 public void setHorizontalPixel(int pixel) { | |
| 7213 checkWidget(); | |
| 7214 if (getCharCount() is 0) { | |
| 7215 return; | |
| 7216 } | |
| 7217 if (pixel < 0) { | |
| 7218 pixel = 0; | |
| 7219 } | |
| 7220 // allow any value if client area width is unknown or 0. | |
| 7221 // offset will be checked in resize handler. | |
| 7222 // don't use isVisible since width is known even if widget | |
| 7223 // is temporarily invisible | |
| 7224 if (clientAreaWidth > 0) { | |
| 7225 int width = renderer.getWidth(); | |
| 7226 // prevent scrolling if the content fits in the client area. | |
| 7227 // align end of longest line with right border of client area | |
| 7228 // if offset is out of range. | |
| 7229 if (pixel > width - clientAreaWidth) { | |
| 7230 pixel = Math.max(0, width - clientAreaWidth); | |
| 7231 } | |
| 7232 } | |
| 7233 scrollHorizontal(pixel - horizontalScrollOffset, true); | |
| 7234 } | |
| 7235 /** | |
| 7236 * Sets the line indentation of the widget. | |
| 7237 * <p> | |
| 7238 * It is the amount of blank space, in pixels, at the beginning of each line. | |
| 7239 * When a line wraps in several lines only the first one is indented. | |
| 7240 * </p> | |
| 7241 * | |
| 7242 * @param indent the new indent | |
| 7243 * | |
| 7244 * @exception DWTException <ul> | |
| 7245 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7246 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7247 * </ul> | |
| 7248 * | |
| 7249 * @see #setLineIndent(int, int, int) | |
| 7250 * | |
| 7251 * @since 3.2 | |
| 7252 */ | |
| 7253 public void setIndent(int indent) { | |
| 7254 checkWidget(); | |
| 7255 if (this.indent is indent || indent < 0) return; | |
| 7256 this.indent = indent; | |
| 7257 resetCache(0, content.getLineCount()); | |
| 7258 setCaretLocation(); | |
| 7259 super.redraw(); | |
| 7260 } | |
| 7261 /** | |
| 7262 * Sets whether the widget should justify lines. | |
| 7263 * | |
| 7264 * @param justify whether lines should be justified | |
| 7265 * | |
| 7266 * @exception DWTException <ul> | |
| 7267 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7268 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7269 * </ul> | |
| 7270 * | |
| 7271 * @see #setLineJustify(int, int, bool) | |
| 7272 * | |
| 7273 * @since 3.2 | |
| 7274 */ | |
| 7275 public void setJustify(bool justify) { | |
| 7276 checkWidget(); | |
| 7277 if (this.justify is justify) return; | |
| 7278 this.justify = justify; | |
| 7279 resetCache(0, content.getLineCount()); | |
| 7280 setCaretLocation(); | |
| 7281 super.redraw(); | |
| 7282 } | |
| 7283 /** | |
| 7284 * Maps a key to an action. | |
| 7285 * <p> | |
| 7286 * One action can be associated with N keys. However, each key can only | |
| 7287 * have one action (key:action is N:1 relation). | |
| 7288 * </p> | |
| 7289 * | |
| 7290 * @param key a key code defined in DWT.java or a character. | |
| 7291 * Optionally ORd with a state mask. Preferred state masks are one or more of | |
| 7292 * DWT.MOD1, DWT.MOD2, DWT.MOD3, since these masks account for modifier platform | |
| 7293 * differences. However, there may be cases where using the specific state masks | |
| 7294 * (i.e., DWT.CTRL, DWT.SHIFT, DWT.ALT, DWT.COMMAND) makes sense. | |
| 7295 * @param action one of the predefined actions defined in ST.java. | |
| 7296 * Use DWT.NULL to remove a key binding. | |
| 7297 * @exception DWTException <ul> | |
| 7298 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7299 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7300 * </ul> | |
| 7301 */ | |
| 7302 public void setKeyBinding(int key, int action) { | |
| 7303 checkWidget(); | |
| 7304 int modifierValue = key & DWT.MODIFIER_MASK; | |
| 7305 char keyChar = cast(char)(key & DWT.KEY_MASK); | |
| 7306 if (Compatibility.isLetter(keyChar)) { | |
| 7307 // make the keybinding case insensitive by adding it | |
| 7308 // in its upper and lower case form | |
| 7309 char ch = CharacterToUpper(keyChar); | |
| 7310 int newKey = ch | modifierValue; | |
| 7311 if (action is DWT.NULL) { | |
| 7312 keyActionMap.remove(newKey); | |
| 7313 } else { | |
| 7314 keyActionMap[newKey] = action; | |
| 7315 } | |
| 7316 ch = CharacterToLower(keyChar); | |
| 7317 newKey = ch | modifierValue; | |
| 7318 if (action is DWT.NULL) { | |
| 7319 keyActionMap.remove(newKey); | |
| 7320 } else { | |
| 7321 keyActionMap[newKey] = action; | |
| 7322 } | |
| 7323 } else { | |
| 7324 if (action is DWT.NULL) { | |
| 7325 keyActionMap.remove(key); | |
| 7326 } else { | |
| 7327 keyActionMap[key]=action; | |
| 7328 } | |
| 7329 } | |
| 7330 } | |
| 7331 /** | |
| 7332 * Sets the alignment of the specified lines. The argument should be one of <code>DWT.LEFT</code>, | |
| 7333 * <code>DWT.CENTER</code> or <code>DWT.RIGHT</code>. | |
| 213 | 7334 * <p><p> |
| 7335 * Note that if <code>DWT.MULTI</code> is set, then <code>DWT.WRAP</code> must also be set | |
| 7336 * in order to stabilize the right edge before setting alignment. | |
| 7337 * </p> | |
| 155 | 7338 * Should not be called if a LineStyleListener has been set since the listener |
| 7339 * maintains the line attributes. | |
| 7340 * </p><p> | |
| 7341 * All line attributes are maintained relative to the line text, not the | |
| 7342 * line index that is specified in this method call. | |
| 7343 * During text changes, when entire lines are inserted or removed, the line | |
| 7344 * attributes that are associated with the lines after the change | |
| 7345 * will "move" with their respective text. An entire line is defined as | |
| 7346 * extending from the first character on a line to the last and including the | |
| 7347 * line delimiter. | |
| 7348 * </p><p> | |
| 7349 * When two lines are joined by deleting a line delimiter, the top line | |
| 7350 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7351 * For all other text changes line attributes will remain unchanged. | |
| 7352 * | |
| 7353 * @param startLine first line the alignment is applied to, 0 based | |
| 7354 * @param lineCount number of lines the alignment applies to. | |
| 7355 * @param alignment line alignment | |
| 7356 * | |
| 7357 * @exception DWTException <ul> | |
| 7358 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7359 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7360 * </ul> | |
| 7361 * @exception IllegalArgumentException <ul> | |
| 7362 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7363 * </ul> | |
| 7364 * @see #setAlignment(int) | |
| 7365 * @since 3.2 | |
| 7366 */ | |
| 7367 public void setLineAlignment(int startLine, int lineCount, int alignment) { | |
| 7368 checkWidget(); | |
| 7369 if (isListening(LineGetStyle)) return; | |
| 7370 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7371 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7372 } | |
| 7373 | |
| 7374 renderer.setLineAlignment(startLine, lineCount, alignment); | |
| 7375 resetCache(startLine, lineCount); | |
| 7376 redrawLines(startLine, lineCount); | |
| 7377 int caretLine = getCaretLine(); | |
| 7378 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7379 setCaretLocation(); | |
| 7380 } | |
| 7381 } | |
| 7382 /** | |
| 7383 * Sets the background color of the specified lines. | |
| 7384 * <p> | |
| 7385 * The background color is drawn for the width of the widget. All | |
| 7386 * line background colors are discarded when setText is called. | |
| 7387 * The text background color if defined in a StyleRange overlays the | |
| 7388 * line background color. | |
| 7389 * </p><p> | |
| 7390 * Should not be called if a LineBackgroundListener has been set since the | |
| 7391 * listener maintains the line backgrounds. | |
| 7392 * </p><p> | |
| 7393 * All line attributes are maintained relative to the line text, not the | |
| 7394 * line index that is specified in this method call. | |
| 7395 * During text changes, when entire lines are inserted or removed, the line | |
| 7396 * attributes that are associated with the lines after the change | |
| 7397 * will "move" with their respective text. An entire line is defined as | |
| 7398 * extending from the first character on a line to the last and including the | |
| 7399 * line delimiter. | |
| 7400 * </p><p> | |
| 7401 * When two lines are joined by deleting a line delimiter, the top line | |
| 7402 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7403 * For all other text changes line attributes will remain unchanged. | |
| 7404 * </p> | |
| 7405 * | |
| 7406 * @param startLine first line the color is applied to, 0 based | |
| 7407 * @param lineCount number of lines the color applies to. | |
| 7408 * @param background line background color | |
| 7409 * @exception DWTException <ul> | |
| 7410 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7411 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7412 * </ul> | |
| 7413 * @exception IllegalArgumentException <ul> | |
| 7414 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7415 * </ul> | |
| 7416 */ | |
| 7417 public void setLineBackground(int startLine, int lineCount, Color background) { | |
| 7418 checkWidget(); | |
| 7419 if (isListening(LineGetBackground)) return; | |
| 7420 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7421 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7422 } | |
| 7423 if (background !is null) { | |
| 7424 renderer.setLineBackground(startLine, lineCount, background); | |
| 7425 } else { | |
| 7426 renderer.clearLineBackground(startLine, lineCount); | |
| 7427 } | |
| 7428 redrawLines(startLine, lineCount); | |
| 7429 } | |
| 7430 /** | |
| 7431 * Sets the bullet of the specified lines. | |
| 7432 * <p> | |
| 7433 * Should not be called if a LineStyleListener has been set since the listener | |
| 7434 * maintains the line attributes. | |
| 7435 * </p><p> | |
| 7436 * All line attributes are maintained relative to the line text, not the | |
| 7437 * line index that is specified in this method call. | |
| 7438 * During text changes, when entire lines are inserted or removed, the line | |
| 7439 * attributes that are associated with the lines after the change | |
| 7440 * will "move" with their respective text. An entire line is defined as | |
| 7441 * extending from the first character on a line to the last and including the | |
| 7442 * line delimiter. | |
| 7443 * </p><p> | |
| 7444 * When two lines are joined by deleting a line delimiter, the top line | |
| 7445 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7446 * For all other text changes line attributes will remain unchanged. | |
| 7447 * </p> | |
| 7448 * | |
| 7449 * @param startLine first line the bullet is applied to, 0 based | |
| 7450 * @param lineCount number of lines the bullet applies to. | |
| 7451 * @param bullet line bullet | |
| 7452 * | |
| 7453 * @exception DWTException <ul> | |
| 7454 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7455 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7456 * </ul> | |
| 7457 * @exception IllegalArgumentException <ul> | |
| 7458 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7459 * </ul> | |
| 7460 * @since 3.2 | |
| 7461 */ | |
| 7462 public void setLineBullet(int startLine, int lineCount, Bullet bullet) { | |
| 7463 checkWidget(); | |
| 7464 if (isListening(LineGetStyle)) return; | |
| 7465 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7466 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7467 } | |
| 7468 | |
| 7469 renderer.setLineBullet(startLine, lineCount, bullet); | |
| 7470 resetCache(startLine, lineCount); | |
| 7471 redrawLines(startLine, lineCount); | |
| 7472 int caretLine = getCaretLine(); | |
| 7473 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7474 setCaretLocation(); | |
| 7475 } | |
| 7476 } | |
| 7477 void setVariableLineHeight () { | |
| 7478 if (!fixedLineHeight) return; | |
| 7479 fixedLineHeight = false; | |
| 7480 renderer.calculateIdle(); | |
| 7481 } | |
| 7482 /** | |
| 7483 * Sets the indent of the specified lines. | |
| 7484 * <p> | |
| 7485 * Should not be called if a LineStyleListener has been set since the listener | |
| 7486 * maintains the line attributes. | |
| 7487 * </p><p> | |
| 7488 * All line attributes are maintained relative to the line text, not the | |
| 7489 * line index that is specified in this method call. | |
| 7490 * During text changes, when entire lines are inserted or removed, the line | |
| 7491 * attributes that are associated with the lines after the change | |
| 7492 * will "move" with their respective text. An entire line is defined as | |
| 7493 * extending from the first character on a line to the last and including the | |
| 7494 * line delimiter. | |
| 7495 * </p><p> | |
| 7496 * When two lines are joined by deleting a line delimiter, the top line | |
| 7497 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7498 * For all other text changes line attributes will remain unchanged. | |
| 7499 * </p> | |
| 7500 * | |
| 7501 * @param startLine first line the indent is applied to, 0 based | |
| 7502 * @param lineCount number of lines the indent applies to. | |
| 7503 * @param indent line indent | |
| 7504 * | |
| 7505 * @exception DWTException <ul> | |
| 7506 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7507 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7508 * </ul> | |
| 7509 * @exception IllegalArgumentException <ul> | |
| 7510 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7511 * </ul> | |
| 7512 * @see #setIndent(int) | |
| 7513 * @since 3.2 | |
| 7514 */ | |
| 7515 public void setLineIndent(int startLine, int lineCount, int indent) { | |
| 7516 checkWidget(); | |
| 7517 if (isListening(LineGetStyle)) return; | |
| 7518 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7519 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7520 } | |
| 7521 | |
| 7522 renderer.setLineIndent(startLine, lineCount, indent); | |
| 7523 resetCache(startLine, lineCount); | |
| 7524 redrawLines(startLine, lineCount); | |
| 7525 int caretLine = getCaretLine(); | |
| 7526 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7527 setCaretLocation(); | |
| 7528 } | |
| 7529 } | |
| 7530 /** | |
| 7531 * Sets the justify of the specified lines. | |
| 7532 * <p> | |
| 7533 * Should not be called if a LineStyleListener has been set since the listener | |
| 7534 * maintains the line attributes. | |
| 7535 * </p><p> | |
| 7536 * All line attributes are maintained relative to the line text, not the | |
| 7537 * line index that is specified in this method call. | |
| 7538 * During text changes, when entire lines are inserted or removed, the line | |
| 7539 * attributes that are associated with the lines after the change | |
| 7540 * will "move" with their respective text. An entire line is defined as | |
| 7541 * extending from the first character on a line to the last and including the | |
| 7542 * line delimiter. | |
| 7543 * </p><p> | |
| 7544 * When two lines are joined by deleting a line delimiter, the top line | |
| 7545 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7546 * For all other text changes line attributes will remain unchanged. | |
| 7547 * </p> | |
| 7548 * | |
| 7549 * @param startLine first line the justify is applied to, 0 based | |
| 7550 * @param lineCount number of lines the justify applies to. | |
| 7551 * @param justify true if lines should be justified | |
| 7552 * | |
| 7553 * @exception DWTException <ul> | |
| 7554 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7555 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7556 * </ul> | |
| 7557 * @exception IllegalArgumentException <ul> | |
| 7558 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7559 * </ul> | |
| 7560 * @see #setJustify(bool) | |
| 7561 * @since 3.2 | |
| 7562 */ | |
| 7563 public void setLineJustify(int startLine, int lineCount, bool justify) { | |
| 7564 checkWidget(); | |
| 7565 if (isListening(LineGetStyle)) return; | |
| 7566 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7567 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7568 } | |
| 7569 | |
| 7570 renderer.setLineJustify(startLine, lineCount, justify); | |
| 7571 resetCache(startLine, lineCount); | |
| 7572 redrawLines(startLine, lineCount); | |
| 7573 int caretLine = getCaretLine(); | |
| 7574 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7575 setCaretLocation(); | |
| 7576 } | |
| 7577 } | |
| 7578 /** | |
| 7579 * Sets the line spacing of the widget. The line spacing applies for all lines. | |
| 7580 * | |
| 7581 * @param lineSpacing the line spacing | |
| 7582 * @exception DWTException <ul> | |
| 7583 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7584 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7585 * </ul> | |
| 7586 * @since 3.2 | |
| 7587 */ | |
| 7588 public void setLineSpacing(int lineSpacing) { | |
| 7589 checkWidget(); | |
| 7590 if (this.lineSpacing is lineSpacing || lineSpacing < 0) return; | |
| 7591 this.lineSpacing = lineSpacing; | |
| 7592 setVariableLineHeight(); | |
| 7593 resetCache(0, content.getLineCount()); | |
| 7594 setCaretLocation(); | |
| 7595 super.redraw(); | |
| 7596 } | |
| 7597 void setMargins (int leftMargin, int topMargin, int rightMargin, int bottomMargin) { | |
| 7598 checkWidget(); | |
| 7599 this.leftMargin = leftMargin; | |
| 7600 this.topMargin = topMargin; | |
| 7601 this.rightMargin = rightMargin; | |
| 7602 this.bottomMargin = bottomMargin; | |
| 7603 setCaretLocation(); | |
| 7604 } | |
| 7605 /** | |
| 7606 * Flips selection anchor based on word selection direction. | |
| 7607 */ | |
| 7608 void setMouseWordSelectionAnchor() { | |
| 7609 if (clickCount > 1) { | |
| 7610 if (caretOffset < doubleClickSelection.x) { | |
| 7611 selectionAnchor = doubleClickSelection.y; | |
| 7612 } else if (caretOffset > doubleClickSelection.y) { | |
| 7613 selectionAnchor = doubleClickSelection.x; | |
| 7614 } | |
| 7615 } | |
| 7616 } | |
| 7617 /** | |
| 7618 * Sets the orientation of the receiver, which must be one | |
| 7619 * of the constants <code>DWT.LEFT_TO_RIGHT</code> or <code>DWT.RIGHT_TO_LEFT</code>. | |
| 7620 * | |
| 7621 * @param orientation new orientation style | |
| 7622 * | |
| 7623 * @exception DWTException <ul> | |
| 7624 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7625 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7626 * </ul> | |
| 7627 * | |
| 7628 * @since 2.1.2 | |
| 7629 */ | |
| 7630 public void setOrientation(int orientation) { | |
| 7631 if ((orientation & (DWT.RIGHT_TO_LEFT | DWT.LEFT_TO_RIGHT)) is 0) { | |
| 7632 return; | |
| 7633 } | |
| 7634 if ((orientation & DWT.RIGHT_TO_LEFT) !is 0 && (orientation & DWT.LEFT_TO_RIGHT) !is 0) { | |
| 7635 return; | |
| 7636 } | |
| 7637 if ((orientation & DWT.RIGHT_TO_LEFT) !is 0 && isMirrored()) { | |
| 7638 return; | |
| 7639 } | |
| 7640 if ((orientation & DWT.LEFT_TO_RIGHT) !is 0 && !isMirrored()) { | |
| 7641 return; | |
| 7642 } | |
| 213 | 7643 if (!BidiUtil.setOrientation(this, orientation)) { |
| 155 | 7644 return; |
| 7645 } | |
| 7646 isMirrored_ = (orientation & DWT.RIGHT_TO_LEFT) !is 0; | |
| 7647 caretDirection = DWT.NULL; | |
| 7648 resetCache(0, content.getLineCount()); | |
| 7649 setCaretLocation(); | |
| 7650 keyActionMap = null; | |
| 7651 createKeyBindings(); | |
| 7652 super.redraw(); | |
| 7653 } | |
| 7654 /** | |
| 7655 * Adjusts the maximum and the page size of the scroll bars to | |
| 7656 * reflect content width/length changes. | |
| 7657 * | |
| 7658 * @param vertical indicates if the vertical scrollbar also needs to be set | |
| 7659 */ | |
| 7660 void setScrollBars(bool vertical) { | |
| 7661 int inactive = 1; | |
| 7662 if (vertical || !isFixedLineHeight()) { | |
| 7663 ScrollBar verticalBar = getVerticalBar(); | |
| 7664 if (verticalBar !is null) { | |
| 7665 int maximum = renderer.getHeight(); | |
| 7666 // only set the real values if the scroll bar can be used | |
| 7667 // (ie. because the thumb size is less than the scroll maximum) | |
| 7668 // avoids flashing on Motif, fixes 1G7RE1J and 1G5SE92 | |
| 7669 if (clientAreaHeight < maximum) { | |
| 7670 verticalBar.setMaximum(maximum); | |
| 7671 verticalBar.setThumb(clientAreaHeight); | |
| 7672 verticalBar.setPageIncrement(clientAreaHeight); | |
| 7673 } else if (verticalBar.getThumb() !is inactive || verticalBar.getMaximum() !is inactive) { | |
| 7674 verticalBar.setValues( | |
| 7675 verticalBar.getSelection(), | |
| 7676 verticalBar.getMinimum(), | |
| 7677 inactive, | |
| 7678 inactive, | |
| 7679 verticalBar.getIncrement(), | |
| 7680 inactive); | |
| 7681 } | |
| 7682 } | |
| 7683 } | |
| 7684 ScrollBar horizontalBar = getHorizontalBar(); | |
| 7685 if (horizontalBar !is null && horizontalBar.getVisible()) { | |
| 7686 int maximum = renderer.getWidth(); | |
| 7687 // only set the real values if the scroll bar can be used | |
| 7688 // (ie. because the thumb size is less than the scroll maximum) | |
| 7689 // avoids flashing on Motif, fixes 1G7RE1J and 1G5SE92 | |
| 7690 if (clientAreaWidth < maximum) { | |
| 7691 horizontalBar.setMaximum(maximum); | |
| 7692 horizontalBar.setThumb(clientAreaWidth - leftMargin - rightMargin); | |
| 7693 horizontalBar.setPageIncrement(clientAreaWidth - leftMargin - rightMargin); | |
| 7694 } else if (horizontalBar.getThumb() !is inactive || horizontalBar.getMaximum() !is inactive) { | |
| 7695 horizontalBar.setValues( | |
| 7696 horizontalBar.getSelection(), | |
| 7697 horizontalBar.getMinimum(), | |
| 7698 inactive, | |
| 7699 inactive, | |
| 7700 horizontalBar.getIncrement(), | |
| 7701 inactive); | |
| 7702 } | |
| 7703 } | |
| 7704 } | |
| 7705 /** | |
| 7706 * Sets the selection to the given position and scrolls it into view. Equivalent to setSelection(start,start). | |
| 7707 * | |
| 7708 * @param start new caret position | |
| 7709 * @see #setSelection(int,int) | |
| 7710 * @exception DWTException <ul> | |
| 7711 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7712 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7713 * </ul> | |
| 7714 * @exception IllegalArgumentException <ul> | |
| 7715 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7716 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7717 * </ul> | |
| 7718 */ | |
| 7719 public void setSelection(int start) { | |
| 7720 // checkWidget test done in setSelectionRange | |
| 7721 setSelection(start, start); | |
| 7722 } | |
| 7723 /** | |
| 7724 * Sets the selection and scrolls it into view. | |
| 7725 * <p> | |
| 7726 * Indexing is zero based. Text selections are specified in terms of | |
| 7727 * caret positions. In a text widget that contains N characters, there are | |
| 7728 * N+1 caret positions, ranging from 0..N | |
| 7729 * </p> | |
| 7730 * | |
| 7731 * @param point x=selection start offset, y=selection end offset | |
| 7732 * The caret will be placed at the selection start when x > y. | |
| 7733 * @see #setSelection(int,int) | |
| 7734 * @exception DWTException <ul> | |
| 7735 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7736 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7737 * </ul> | |
| 7738 * @exception IllegalArgumentException <ul> | |
| 7739 * <li>ERROR_NULL_ARGUMENT when point is null</li> | |
| 7740 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7741 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7742 * </ul> | |
| 7743 */ | |
| 7744 public void setSelection(Point point) { | |
| 7745 checkWidget(); | |
| 7746 if (point is null) DWT.error (DWT.ERROR_NULL_ARGUMENT); | |
| 7747 setSelection(point.x, point.y); | |
| 7748 } | |
| 7749 /** | |
| 7750 * Sets the receiver's selection background color to the color specified | |
| 7751 * by the argument, or to the default system color for the control | |
| 7752 * if the argument is null. | |
| 7753 * | |
| 7754 * @param color the new color (or null) | |
| 7755 * | |
| 7756 * @exception IllegalArgumentException <ul> | |
| 7757 * <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li> | |
| 7758 * </ul> | |
| 7759 * @exception DWTException <ul> | |
| 7760 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7761 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7762 * </ul> | |
| 7763 * @since 2.1 | |
| 7764 */ | |
| 7765 public void setSelectionBackground (Color color) { | |
| 7766 checkWidget (); | |
| 7767 if (color !is null) { | |
| 7768 if (color.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7769 } | |
| 7770 selectionBackground = color; | |
| 7771 super.redraw(); | |
| 7772 } | |
| 7773 /** | |
| 7774 * Sets the receiver's selection foreground color to the color specified | |
| 7775 * by the argument, or to the default system color for the control | |
| 7776 * if the argument is null. | |
| 7777 * <p> | |
| 7778 * Note that this is a <em>HINT</em>. Some platforms do not allow the application | |
| 7779 * to change the selection foreground color. | |
| 7780 * </p> | |
| 7781 * @param color the new color (or null) | |
| 7782 * | |
| 7783 * @exception IllegalArgumentException <ul> | |
| 7784 * <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li> | |
| 7785 * </ul> | |
| 7786 * @exception DWTException <ul> | |
| 7787 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7788 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7789 * </ul> | |
| 7790 * @since 2.1 | |
| 7791 */ | |
| 7792 public void setSelectionForeground (Color color) { | |
| 7793 checkWidget (); | |
| 7794 if (color !is null) { | |
| 7795 if (color.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7796 } | |
| 7797 selectionForeground = color; | |
| 7798 super.redraw(); | |
| 7799 } | |
| 7800 /** | |
| 7801 * Sets the selection and scrolls it into view. | |
| 7802 * <p> | |
| 7803 * Indexing is zero based. Text selections are specified in terms of | |
| 7804 * caret positions. In a text widget that contains N characters, there are | |
| 7805 * N+1 caret positions, ranging from 0..N | |
| 7806 * </p> | |
| 7807 * | |
| 7808 * @param start selection start offset. The caret will be placed at the | |
| 7809 * selection start when start > end. | |
| 7810 * @param end selection end offset | |
| 7811 * @see #setSelectionRange(int,int) | |
| 7812 * @exception DWTException <ul> | |
| 7813 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7814 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7815 * </ul> | |
| 7816 * @exception IllegalArgumentException <ul> | |
| 7817 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7818 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7819 * </ul> | |
| 7820 */ | |
| 7821 public void setSelection(int start, int end) { | |
| 7822 setSelectionRange(start, end - start); | |
| 7823 showSelection(); | |
| 7824 } | |
| 7825 /** | |
| 7826 * Sets the selection. | |
| 7827 * <p> | |
| 7828 * The new selection may not be visible. Call showSelection to scroll | |
| 7829 * the selection into view. | |
| 7830 * </p> | |
| 7831 * | |
| 7832 * @param start offset of the first selected character, start >= 0 must be true. | |
| 7833 * @param length number of characters to select, 0 <= start + length | |
| 7834 * <= getCharCount() must be true. | |
| 7835 * A negative length places the caret at the selection start. | |
| 7836 * @param sendEvent a Selection event is sent when set to true and when | |
| 7837 * the selection is reset. | |
| 7838 */ | |
| 7839 void setSelection(int start, int length, bool sendEvent) { | |
| 7840 int end = start + length; | |
| 7841 if (start > end) { | |
| 7842 int temp = end; | |
| 7843 end = start; | |
| 7844 start = temp; | |
| 7845 } | |
| 7846 // is the selection range different or is the selection direction | |
| 7847 // different? | |
| 7848 if (selection.x !is start || selection.y !is end || | |
| 7849 (length > 0 && selectionAnchor !is selection.x) || | |
| 7850 (length < 0 && selectionAnchor !is selection.y)) { | |
| 7851 clearSelection(sendEvent); | |
| 7852 if (length < 0) { | |
| 7853 selectionAnchor = selection.y = end; | |
| 7854 caretOffset = selection.x = start; | |
| 7855 } else { | |
| 7856 selectionAnchor = selection.x = start; | |
| 7857 caretOffset = selection.y = end; | |
| 7858 } | |
| 213 | 7859 caretAlignment = PREVIOUS_OFFSET_TRAILING; |
| 155 | 7860 internalRedrawRange(selection.x, selection.y - selection.x); |
| 7861 } | |
| 7862 } | |
| 7863 /** | |
| 7864 * Sets the selection. | |
| 7865 * <p> | |
| 7866 * The new selection may not be visible. Call showSelection to scroll the selection | |
| 7867 * into view. A negative length places the caret at the visual start of the selection. | |
| 7868 * </p> | |
| 7869 * | |
| 7870 * @param start offset of the first selected character | |
| 7871 * @param length number of characters to select | |
| 7872 * | |
| 7873 * @exception DWTException <ul> | |
| 7874 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7875 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7876 * </ul> | |
| 7877 * @exception IllegalArgumentException <ul> | |
| 7878 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7879 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7880 * </ul> | |
| 7881 */ | |
| 7882 public void setSelectionRange(int start, int length) { | |
| 7883 checkWidget(); | |
| 7884 int contentLength = getCharCount(); | |
| 7885 start = Math.max(0, Math.min (start, contentLength)); | |
| 7886 int end = start + length; | |
| 7887 if (end < 0) { | |
| 7888 length = -start; | |
| 7889 } else { | |
| 7890 if (end > contentLength) length = contentLength - start; | |
| 7891 } | |
| 7892 if (isLineDelimiter(start) || isLineDelimiter(start + length)) { | |
| 7893 // the start offset or end offset of the selection range is inside a | |
| 7894 // multi byte line delimiter. This is an illegal operation and an exception | |
| 7895 // is thrown. Fixes 1GDKK3R | |
| 7896 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7897 } | |
| 7898 setSelection(start, length, false); | |
| 7899 setCaretLocation(); | |
| 7900 } | |
| 7901 /** | |
| 7902 * Adds the specified style. | |
| 7903 * <p> | |
| 7904 * The new style overwrites existing styles for the specified range. | |
| 7905 * Existing style ranges are adjusted if they partially overlap with | |
| 7906 * the new style. To clear an individual style, call setStyleRange | |
| 7907 * with a StyleRange that has null attributes. | |
| 7908 * </p><p> | |
| 7909 * Should not be called if a LineStyleListener has been set since the | |
| 7910 * listener maintains the styles. | |
| 7911 * </p> | |
| 7912 * | |
| 7913 * @param range StyleRange object containing the style information. | |
| 7914 * Overwrites the old style in the given range. May be null to delete | |
| 7915 * all styles. | |
| 7916 * @exception DWTException <ul> | |
| 7917 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7918 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7919 * </ul> | |
| 7920 * @exception IllegalArgumentException <ul> | |
| 7921 * <li>ERROR_INVALID_RANGE when the style range is outside the valid range (> getCharCount())</li> | |
| 7922 * </ul> | |
| 7923 */ | |
| 7924 public void setStyleRange(StyleRange range) { | |
| 7925 checkWidget(); | |
| 7926 if (isListening(LineGetStyle)) return; | |
| 7927 if (range !is null) { | |
| 7928 if (range.isUnstyled()) { | |
| 7929 setStyleRanges(range.start, range.length, null, null, false); | |
| 7930 } else { | |
| 7931 setStyleRanges(range.start, 0, null, [range], false); | |
| 7932 } | |
| 7933 } else { | |
| 7934 setStyleRanges(0, 0, null, null, true); | |
| 7935 } | |
| 7936 } | |
| 7937 /** | |
| 7938 * Clears the styles in the range specified by <code>start</code> and | |
| 7939 * <code>length</code> and adds the new styles. | |
| 7940 * <p> | |
| 7941 * The ranges array contains start and length pairs. Each pair refers to | |
| 7942 * the corresponding style in the styles array. For example, the pair | |
| 7943 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 7944 * at styles[n/2]. The range fields within each StyleRange are ignored. | |
| 7945 * If ranges or styles is null, the specified range is cleared. | |
| 7946 * </p><p> | |
| 7947 * Note: It is expected that the same instance of a StyleRange will occur | |
| 7948 * multiple times within the styles array, reducing memory usage. | |
| 7949 * </p><p> | |
| 7950 * Should not be called if a LineStyleListener has been set since the | |
| 7951 * listener maintains the styles. | |
| 7952 * </p> | |
| 7953 * | |
| 7954 * @param start offset of first character where styles will be deleted | |
| 7955 * @param length length of the range to delete styles in | |
| 7956 * @param ranges the array of ranges. The ranges must not overlap and must be in order. | |
| 7957 * @param styles the array of StyleRanges. The range fields within the StyleRange are unused. | |
| 7958 * | |
| 7959 * @exception DWTException <ul> | |
| 7960 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7961 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7962 * </ul> | |
| 7963 * @exception IllegalArgumentException <ul> | |
| 7964 * <li>ERROR_INVALID_RANGE when the number of ranges and style do not match (ranges.length * 2 is styles.length)</li> | |
| 7965 * <li>ERROR_INVALID_RANGE when a range is outside the valid range (> getCharCount() or less than zero)</li> | |
| 7966 * <li>ERROR_INVALID_RANGE when a range overlaps</li> | |
| 7967 * </ul> | |
| 7968 * | |
| 7969 * @since 3.2 | |
| 7970 */ | |
| 7971 public void setStyleRanges(int start, int length, int[] ranges, StyleRange[] styles) { | |
| 7972 checkWidget(); | |
| 7973 if (isListening(LineGetStyle)) return; | |
| 7974 if (ranges is null || styles is null) { | |
| 7975 setStyleRanges(start, length, null, null, false); | |
| 7976 } else { | |
| 7977 setStyleRanges(start, length, ranges, styles, false); | |
| 7978 } | |
| 7979 } | |
| 7980 /** | |
| 7981 * Sets styles to be used for rendering the widget content. | |
| 7982 * <p> | |
| 7983 * All styles in the widget will be replaced with the given set of ranges and styles. | |
| 7984 * The ranges array contains start and length pairs. Each pair refers to | |
| 7985 * the corresponding style in the styles array. For example, the pair | |
| 7986 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 7987 * at styles[n/2]. The range fields within each StyleRange are ignored. | |
| 7988 * If either argument is null, the styles are cleared. | |
| 7989 * </p><p> | |
| 7990 * Note: It is expected that the same instance of a StyleRange will occur | |
| 7991 * multiple times within the styles array, reducing memory usage. | |
| 7992 * </p><p> | |
| 7993 * Should not be called if a LineStyleListener has been set since the | |
| 7994 * listener maintains the styles. | |
| 7995 * </p> | |
| 7996 * | |
| 7997 * @param ranges the array of ranges. The ranges must not overlap and must be in order. | |
| 7998 * @param styles the array of StyleRanges. The range fields within the StyleRange are unused. | |
| 7999 * | |
| 8000 * @exception DWTException <ul> | |
| 8001 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8002 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8003 * </ul> | |
| 8004 * @exception IllegalArgumentException <ul> | |
| 8005 * <li>ERROR_INVALID_RANGE when the number of ranges and style do not match (ranges.length * 2 is styles.length)</li> | |
| 8006 * <li>ERROR_INVALID_RANGE when a range is outside the valid range (> getCharCount() or less than zero)</li> | |
| 8007 * <li>ERROR_INVALID_RANGE when a range overlaps</li> | |
| 8008 * </ul> | |
| 8009 * | |
| 8010 * @since 3.2 | |
| 8011 */ | |
| 8012 public void setStyleRanges(int[] ranges, StyleRange[] styles) { | |
| 8013 checkWidget(); | |
| 8014 if (isListening(LineGetStyle)) return; | |
| 8015 if (ranges is null || styles is null) { | |
| 8016 setStyleRanges(0, 0, null, null, true); | |
| 8017 } else { | |
| 8018 setStyleRanges(0, 0, ranges, styles, true); | |
| 8019 } | |
| 8020 } | |
| 8021 void setStyleRanges(int start, int length, int[] ranges, StyleRange[] styles, bool reset) { | |
| 8022 int charCount = content.getCharCount(); | |
| 8023 int end = start + length; | |
| 8024 if (start > end || start < 0) { | |
| 8025 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 8026 } | |
| 8027 if (styles !is null) { | |
| 8028 if (end > charCount) { | |
| 8029 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 8030 } | |
| 8031 if (ranges !is null) { | |
| 8032 if (ranges.length !is styles.length << 1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 8033 } | |
| 8034 int lastOffset = 0; | |
| 8035 bool variableHeight = false; | |
| 8036 for (int i = 0; i < styles.length; i ++) { | |
| 8037 if (styles[i] is null) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 8038 int rangeStart, rangeLength; | |
| 8039 if (ranges !is null) { | |
| 8040 rangeStart = ranges[i << 1]; | |
| 8041 rangeLength = ranges[(i << 1) + 1]; | |
| 8042 } else { | |
| 8043 rangeStart = styles[i].start; | |
| 8044 rangeLength = styles[i].length; | |
| 8045 } | |
| 8046 if (rangeLength < 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 8047 if (!(0 <= rangeStart && rangeStart + rangeLength <= charCount)) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 8048 if (lastOffset > rangeStart) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 8049 variableHeight |= styles[i].isVariableHeight(); | |
| 8050 lastOffset = rangeStart + rangeLength; | |
| 8051 } | |
| 8052 if (variableHeight) setVariableLineHeight(); | |
| 8053 } | |
| 8054 int rangeStart = start, rangeEnd = end; | |
| 8055 if (styles !is null && styles.length > 0) { | |
| 8056 if (ranges !is null) { | |
| 8057 rangeStart = ranges[0]; | |
| 8058 rangeEnd = ranges[ranges.length - 2] + ranges[ranges.length - 1]; | |
| 8059 } else { | |
| 8060 rangeStart = styles[0].start; | |
| 8061 rangeEnd = styles[styles.length - 1].start + styles[styles.length - 1].length; | |
| 8062 } | |
| 8063 } | |
| 8064 int lastLineBottom = 0; | |
| 8065 if (!isFixedLineHeight() && !reset) { | |
| 8066 int lineEnd = content.getLineAtOffset(Math.max(end, rangeEnd)); | |
| 8067 int partialTopIndex = getPartialTopIndex(); | |
| 8068 int partialBottomIndex = getPartialBottomIndex(); | |
| 8069 if (partialTopIndex <= lineEnd && lineEnd <= partialBottomIndex) { | |
| 8070 lastLineBottom = getLinePixel(lineEnd + 1); | |
| 8071 } | |
| 8072 } | |
| 8073 if (reset) { | |
| 8074 renderer.setStyleRanges(null, null); | |
| 8075 } else { | |
| 8076 renderer.updateRanges(start, length, length); | |
| 8077 } | |
| 8078 if (styles !is null && styles.length > 0) { | |
| 8079 renderer.setStyleRanges(ranges, styles); | |
| 8080 } | |
| 8081 if (reset) { | |
| 8082 resetCache(0, content.getLineCount()); | |
| 8083 super.redraw(); | |
| 8084 } else { | |
| 8085 int lineStart = content.getLineAtOffset(Math.min(start, rangeStart)); | |
| 8086 int lineEnd = content.getLineAtOffset(Math.max(end, rangeEnd)); | |
| 8087 resetCache(lineStart, lineEnd - lineStart + 1); | |
| 8088 int partialTopIndex = getPartialTopIndex(); | |
| 8089 int partialBottomIndex = getPartialBottomIndex(); | |
| 8090 if (!(lineStart > partialBottomIndex || lineEnd < partialTopIndex)) { | |
| 8091 int y = 0; | |
| 8092 int height = clientAreaHeight; | |
| 8093 if (partialTopIndex <= lineStart && lineStart <= partialBottomIndex) { | |
| 8094 int lineTop = Math.max(y, getLinePixel(lineStart)); | |
| 8095 y = lineTop; | |
| 8096 height -= lineTop; | |
| 8097 } | |
| 8098 if (partialTopIndex <= lineEnd && lineEnd <= partialBottomIndex) { | |
| 8099 int newLastLineBottom = getLinePixel(lineEnd + 1); | |
| 8100 if (!isFixedLineHeight()) { | |
| 8101 scrollText(lastLineBottom, newLastLineBottom); | |
| 8102 } | |
| 8103 height = newLastLineBottom - y; | |
| 8104 } | |
| 8105 super.redraw(0, y, clientAreaWidth, height, false); | |
| 8106 } | |
| 8107 } | |
| 8108 setCaretLocation(); | |
| 8109 } | |
| 8110 /** | |
| 8111 * Sets styles to be used for rendering the widget content. All styles | |
| 8112 * in the widget will be replaced with the given set of styles. | |
| 8113 * <p> | |
| 8114 * Note: Because a StyleRange includes the start and length, the | |
| 8115 * same instance cannot occur multiple times in the array of styles. | |
| 8116 * If the same style attributes, such as font and color, occur in | |
| 8117 * multiple StyleRanges, <code>setStyleRanges(int[], StyleRange[])</code> | |
| 8118 * can be used to share styles and reduce memory usage. | |
| 8119 * </p><p> | |
| 8120 * Should not be called if a LineStyleListener has been set since the | |
| 8121 * listener maintains the styles. | |
| 8122 * </p> | |
| 8123 * | |
| 8124 * @param ranges StyleRange objects containing the style information. | |
| 8125 * The ranges should not overlap. The style rendering is undefined if | |
| 8126 * the ranges do overlap. Must not be null. The styles need to be in order. | |
| 8127 * @exception DWTException <ul> | |
| 8128 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8129 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8130 * </ul> | |
| 8131 * @exception IllegalArgumentException <ul> | |
| 8132 * <li>ERROR_INVALID_RANGE when the last of the style ranges is outside the valid range (> getCharCount())</li> | |
| 8133 * </ul> | |
| 8134 * | |
| 8135 * @see #setStyleRanges(int[], StyleRange[]) | |
| 8136 */ | |
| 8137 public void setStyleRanges(StyleRange[] ranges) { | |
| 8138 checkWidget(); | |
| 8139 if (isListening(LineGetStyle)) return; | |
|
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8140 // DWT extension: allow null array |
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8141 //if (ranges is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); |
| 155 | 8142 setStyleRanges(0, 0, null, ranges, true); |
| 8143 } | |
| 8144 /** | |
| 8145 * Sets the tab width. | |
| 8146 * | |
| 8147 * @param tabs tab width measured in characters. | |
| 8148 * @exception DWTException <ul> | |
| 8149 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8150 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8151 * </ul> | |
| 8152 */ | |
| 8153 public void setTabs(int tabs) { | |
| 8154 checkWidget(); | |
| 8155 tabLength = tabs; | |
| 8156 renderer.setFont(null, tabs); | |
| 8157 resetCache(0, content.getLineCount()); | |
| 213 | 8158 setCaretLocation(); |
| 155 | 8159 super.redraw(); |
| 8160 } | |
| 8161 /** | |
| 8162 * Sets the widget content. | |
| 8163 * If the widget has the DWT.SINGLE style and "text" contains more than | |
| 8164 * one line, only the first line is rendered but the text is stored | |
| 8165 * unchanged. A subsequent call to getText will return the same text | |
| 8166 * that was set. | |
| 8167 * <p> | |
| 8168 * <b>Note:</b> Only a single line of text should be set when the DWT.SINGLE | |
| 8169 * style is used. | |
| 8170 * </p> | |
| 8171 * | |
| 8172 * @param text new widget content. Replaces existing content. Line styles | |
| 8173 * that were set using StyledText API are discarded. The | |
| 8174 * current selection is also discarded. | |
| 8175 * @exception DWTException <ul> | |
| 8176 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8177 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8178 * </ul> | |
| 8179 */ | |
|
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8180 public void setText(String text) { |
| 155 | 8181 checkWidget(); |
|
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8182 // DWT extension: allow null string |
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|
8183 //if (text is null) { |
|
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8184 // DWT.error(DWT.ERROR_NULL_ARGUMENT); |
|
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|
8185 //} |
| 155 | 8186 Event event = new Event(); |
| 8187 event.start = 0; | |
| 8188 event.end = getCharCount(); | |
| 8189 event.text = text; | |
| 8190 event.doit = true; | |
| 8191 notifyListeners(DWT.Verify, event); | |
| 8192 if (event.doit) { | |
| 8193 StyledTextEvent styledTextEvent = null; | |
| 8194 if (isListening(ExtendedModify)) { | |
| 8195 styledTextEvent = new StyledTextEvent(content); | |
| 8196 styledTextEvent.start = event.start; | |
| 8197 styledTextEvent.end = event.start + event.text.length; | |
| 8198 styledTextEvent.text = content.getTextRange(event.start, event.end - event.start); | |
| 8199 } | |
| 8200 content.setText(event.text); | |
| 8201 sendModifyEvent(event); | |
| 8202 if (styledTextEvent !is null) { | |
| 8203 notifyListeners(ExtendedModify, styledTextEvent); | |
| 8204 } | |
| 8205 } | |
| 8206 } | |
| 8207 /** | |
| 8208 * Sets the text limit to the specified number of characters. | |
| 8209 * <p> | |
| 8210 * The text limit specifies the amount of text that | |
| 8211 * the user can type into the widget. | |
| 8212 * </p> | |
| 8213 * | |
| 8214 * @param limit the new text limit. | |
| 8215 * @exception DWTException <ul> | |
| 8216 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8217 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8218 * </ul> | |
| 8219 * @exception IllegalArgumentException <ul> | |
| 8220 * <li>ERROR_CANNOT_BE_ZERO when limit is 0</li> | |
| 8221 * </ul> | |
| 8222 */ | |
| 8223 public void setTextLimit(int limit) { | |
| 8224 checkWidget(); | |
| 8225 if (limit is 0) { | |
| 8226 DWT.error(DWT.ERROR_CANNOT_BE_ZERO); | |
| 8227 } | |
| 8228 textLimit = limit; | |
| 8229 } | |
| 8230 /** | |
| 8231 * Sets the top index. Do nothing if there is no text set. | |
| 8232 * <p> | |
| 8233 * The top index is the index of the line that is currently at the top | |
| 8234 * of the widget. The top index changes when the widget is scrolled. | |
| 8235 * Indexing starts from zero. | |
| 8236 * Note: The top index is reset to 0 when new text is set in the widget. | |
| 8237 * </p> | |
| 8238 * | |
| 8239 * @param topIndex new top index. Must be between 0 and | |
| 8240 * getLineCount() - fully visible lines per page. If no lines are fully | |
| 8241 * visible the maximum value is getLineCount() - 1. An out of range | |
| 8242 * index will be adjusted accordingly. | |
| 8243 * @exception DWTException <ul> | |
| 8244 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8245 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8246 * </ul> | |
| 8247 */ | |
| 8248 public void setTopIndex(int topIndex) { | |
| 8249 checkWidget(); | |
| 8250 if (getCharCount() is 0) { | |
| 8251 return; | |
| 8252 } | |
| 8253 int lineCount = content.getLineCount(), pixel; | |
| 8254 if (isFixedLineHeight()) { | |
| 8255 int pageSize = Math.max(1, Math.min(lineCount, getLineCountWhole())); | |
| 8256 if (topIndex < 0) { | |
| 8257 topIndex = 0; | |
| 8258 } else if (topIndex > lineCount - pageSize) { | |
| 8259 topIndex = lineCount - pageSize; | |
| 8260 } | |
| 8261 pixel = getLinePixel(topIndex); | |
| 8262 } else { | |
| 8263 topIndex = Math.max(0, Math.min(lineCount - 1, topIndex)); | |
| 8264 pixel = getLinePixel(topIndex); | |
| 8265 if (pixel > 0) { | |
| 8266 pixel = getAvailableHeightBellow(pixel); | |
| 8267 } else { | |
| 8268 pixel = getAvailableHeightAbove(pixel); | |
| 8269 } | |
| 8270 } | |
| 8271 scrollVertical(pixel, true); | |
| 8272 } | |
| 8273 /** | |
| 8274 * Sets the top pixel offset. Do nothing if there is no text set. | |
| 8275 * <p> | |
| 8276 * The top pixel offset is the vertical pixel offset of the widget. The | |
| 8277 * widget is scrolled so that the given pixel position is at the top. | |
| 8278 * The top index is adjusted to the corresponding top line. | |
| 8279 * Note: The top pixel is reset to 0 when new text is set in the widget. | |
| 8280 * </p> | |
| 8281 * | |
| 8282 * @param pixel new top pixel offset. Must be between 0 and | |
| 8283 * (getLineCount() - visible lines per page) / getLineHeight()). An out | |
| 8284 * of range offset will be adjusted accordingly. | |
| 8285 * @exception DWTException <ul> | |
| 8286 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8287 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8288 * </ul> | |
| 8289 * @since 2.0 | |
| 8290 */ | |
| 8291 public void setTopPixel(int pixel) { | |
| 8292 checkWidget(); | |
| 8293 if (getCharCount() is 0) { | |
| 8294 return; | |
| 8295 } | |
| 8296 if (pixel < 0) pixel = 0; | |
| 8297 int lineCount = content.getLineCount(); | |
| 8298 int height = clientAreaHeight - topMargin - bottomMargin; | |
| 8299 int verticalOffset = getVerticalScrollOffset(); | |
| 8300 if (isFixedLineHeight()) { | |
| 8301 int maxTopPixel = Math.max(0, lineCount * getVerticalIncrement() - height); | |
| 8302 if (pixel > maxTopPixel) pixel = maxTopPixel; | |
| 8303 pixel -= verticalOffset; | |
| 8304 } else { | |
| 8305 pixel -= verticalOffset; | |
| 8306 if (pixel > 0) { | |
| 8307 pixel = getAvailableHeightBellow(pixel); | |
| 8308 } | |
| 8309 } | |
| 8310 scrollVertical(pixel, true); | |
| 8311 } | |
| 8312 /** | |
| 8313 * Sets whether the widget wraps lines. | |
| 8314 * <p> | |
| 8315 * This overrides the creation style bit DWT.WRAP. | |
| 8316 * </p> | |
| 8317 * | |
| 8318 * @param wrap true=widget wraps lines, false=widget does not wrap lines | |
| 8319 * @since 2.0 | |
| 8320 */ | |
| 8321 public void setWordWrap(bool wrap) { | |
| 8322 checkWidget(); | |
| 8323 if ((getStyle() & DWT.SINGLE) !is 0) return; | |
| 8324 if (wordWrap is wrap) return; | |
| 8325 wordWrap = wrap; | |
| 8326 setVariableLineHeight(); | |
| 8327 resetCache(0, content.getLineCount()); | |
| 8328 horizontalScrollOffset = 0; | |
| 8329 ScrollBar horizontalBar = getHorizontalBar(); | |
| 8330 if (horizontalBar !is null) { | |
| 8331 horizontalBar.setVisible(!wordWrap); | |
| 8332 } | |
| 8333 setScrollBars(true); | |
| 8334 setCaretLocation(); | |
| 8335 super.redraw(); | |
| 8336 } | |
| 8337 bool showLocation(Rectangle rect, bool scrollPage) { | |
| 8338 int clientAreaWidth = this.clientAreaWidth - leftMargin - rightMargin; | |
| 8339 int clientAreaHeight = this.clientAreaHeight - topMargin - bottomMargin; | |
| 8340 bool scrolled = false; | |
| 8341 if (rect.y <= topMargin) { | |
| 8342 scrolled = scrollVertical(rect.y - topMargin, true); | |
| 8343 } else if (rect.y + rect.height > clientAreaHeight) { | |
| 8344 if (clientAreaHeight is 0) { | |
| 8345 scrolled = scrollVertical(rect.y, true); | |
| 8346 } else { | |
| 8347 scrolled = scrollVertical(rect.y + rect.height - clientAreaHeight, true); | |
| 8348 } | |
| 8349 } | |
| 8350 if (clientAreaWidth > 0) { | |
| 8351 int minScroll = scrollPage ? clientAreaWidth / 4 : 0; | |
| 8352 if (rect.x < leftMargin) { | |
| 8353 int scrollWidth = Math.max(leftMargin - rect.x, minScroll); | |
| 8354 int maxScroll = horizontalScrollOffset; | |
| 8355 scrolled = scrollHorizontal(-Math.min(maxScroll, scrollWidth), true); | |
| 8356 } else if (rect.x + rect.width > clientAreaWidth) { | |
| 8357 int scrollWidth = Math.max(rect.x + rect.width - clientAreaWidth, minScroll); | |
| 8358 int maxScroll = renderer.getWidth() - horizontalScrollOffset - this.clientAreaWidth; | |
| 8359 scrolled = scrollHorizontal(Math.min(maxScroll, scrollWidth), true); | |
| 8360 } | |
| 8361 } | |
| 8362 return scrolled; | |
| 8363 } | |
| 8364 /** | |
| 8365 * Sets the caret location and scrolls the caret offset into view. | |
| 8366 */ | |
| 8367 void showCaret() { | |
| 8368 Rectangle bounds = getBoundsAtOffset(caretOffset); | |
| 8369 if (!showLocation(bounds, true)) { | |
| 8370 setCaretLocation(); | |
| 8371 } | |
| 8372 } | |
| 8373 /** | |
| 8374 * Scrolls the selection into view. | |
| 8375 * <p> | |
| 8376 * The end of the selection will be scrolled into view. | |
| 8377 * Note that if a right-to-left selection exists, the end of the selection is | |
| 8378 * the visual beginning of the selection (i.e., where the caret is located). | |
| 8379 * </p> | |
| 8380 * | |
| 8381 * @exception DWTException <ul> | |
| 8382 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8383 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8384 * </ul> | |
| 8385 */ | |
| 8386 public void showSelection() { | |
| 8387 checkWidget(); | |
| 8388 // is selection from right-to-left? | |
| 8389 bool rightToLeft = caretOffset is selection.x; | |
| 8390 int startOffset, endOffset; | |
| 8391 if (rightToLeft) { | |
| 8392 startOffset = selection.y; | |
| 8393 endOffset = selection.x; | |
| 8394 } else { | |
| 8395 startOffset = selection.x; | |
| 8396 endOffset = selection.y; | |
| 8397 } | |
| 8398 | |
| 8399 Rectangle startBounds = getBoundsAtOffset(startOffset); | |
| 8400 Rectangle endBounds = getBoundsAtOffset(endOffset); | |
| 8401 | |
| 8402 // can the selection be fully displayed within the widget's visible width? | |
| 8403 int w = clientAreaWidth - leftMargin - rightMargin; | |
| 8404 bool selectionFits = rightToLeft ? startBounds.x - endBounds.x <= w : endBounds.x - startBounds.x <= w; | |
| 8405 if (selectionFits) { | |
| 8406 // show as much of the selection as possible by first showing | |
| 8407 // the start of the selection | |
| 8408 if (showLocation(startBounds, false)) { | |
| 8409 // endX value could change if showing startX caused a scroll to occur | |
| 8410 endBounds = getBoundsAtOffset(endOffset); | |
| 8411 } | |
| 8412 // the character at endOffset is not part of the selection | |
| 8413 endBounds.width = 0; | |
| 8414 showLocation(endBounds, false); | |
| 8415 } else { | |
| 8416 // just show the end of the selection since the selection start | |
| 8417 // will not be visible | |
| 8418 showLocation(endBounds, true); | |
| 8419 } | |
| 8420 } | |
| 8421 /** | |
| 8422 * Updates the selection and caret position depending on the text change. | |
| 8423 * <p> | |
| 8424 * If the selection intersects with the replaced text, the selection is | |
| 8425 * reset and the caret moved to the end of the new text. | |
| 8426 * If the selection is behind the replaced text it is moved so that the | |
| 8427 * same text remains selected. If the selection is before the replaced text | |
| 8428 * it is left unchanged. | |
| 8429 * </p> | |
| 8430 * | |
| 8431 * @param startOffset offset of the text change | |
| 8432 * @param replacedLength length of text being replaced | |
| 8433 * @param newLength length of new text | |
| 8434 */ | |
| 8435 void updateSelection(int startOffset, int replacedLength, int newLength) { | |
| 8436 if (selection.y <= startOffset) { | |
| 8437 // selection ends before text change | |
| 246 | 8438 if (wordWrap) setCaretLocation(); |
| 155 | 8439 return; |
| 8440 } | |
| 8441 if (selection.x < startOffset) { | |
| 8442 // clear selection fragment before text change | |
| 8443 internalRedrawRange(selection.x, startOffset - selection.x); | |
| 8444 } | |
| 8445 if (selection.y > startOffset + replacedLength && selection.x < startOffset + replacedLength) { | |
| 8446 // clear selection fragment after text change. | |
| 8447 // do this only when the selection is actually affected by the | |
| 8448 // change. Selection is only affected if it intersects the change (1GDY217). | |
| 8449 int netNewLength = newLength - replacedLength; | |
| 8450 int redrawStart = startOffset + newLength; | |
| 8451 internalRedrawRange(redrawStart, selection.y + netNewLength - redrawStart); | |
| 8452 } | |
| 8453 if (selection.y > startOffset && selection.x < startOffset + replacedLength) { | |
| 8454 // selection intersects replaced text. set caret behind text change | |
| 8455 setSelection(startOffset + newLength, 0, true); | |
| 8456 } else { | |
| 8457 // move selection to keep same text selected | |
| 8458 setSelection(selection.x + newLength - replacedLength, selection.y - selection.x, true); | |
| 8459 } | |
| 8460 setCaretLocation(); | |
| 8461 } | |
| 8462 } |