Mercurial > projects > dwt-win
annotate dwt/custom/StyledText.d @ 212:ab60f3309436
reverted the char[] to String and use the an alias.
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Mon, 05 May 2008 00:12:38 +0200 |
| parents | 184ab53b7785 |
| children | 36f5cb12e1a2 |
| rev | line source |
|---|---|
| 155 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2007 IBM Corporation and others. | |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 * Port to the D programming language: | |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 12 *******************************************************************************/ | |
| 13 module 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; | |
| 59 import dwt.widgets.Label; | |
| 60 import dwt.widgets.Listener; | |
| 61 import dwt.widgets.ScrollBar; | |
| 62 import dwt.widgets.TypedListener; | |
| 63 import dwt.custom.StyledTextContent; | |
| 64 import dwt.custom.TextChangeListener; | |
| 65 import dwt.custom.StyledTextRenderer; | |
| 66 import dwt.custom.StyledTextPrintOptions; | |
| 67 import dwt.custom.ExtendedModifyListener; | |
| 68 import dwt.custom.BidiSegmentListener; | |
| 69 import dwt.custom.LineBackgroundListener; | |
| 70 import dwt.custom.LineStyleListener; | |
| 71 import dwt.custom.PaintObjectListener; | |
| 72 import dwt.custom.VerifyKeyListener; | |
| 73 import dwt.custom.MovementListener; | |
| 74 import dwt.custom.Bullet; | |
| 75 import dwt.custom.StyledTextEvent; | |
| 76 import dwt.custom.StyleRange; | |
| 77 import dwt.custom.TextChangedEvent; | |
| 78 import dwt.custom.TextChangingEvent; | |
| 79 import dwt.custom.DefaultContent; | |
| 80 import dwt.custom.StyledTextDropTargetEffect; | |
| 81 import dwt.custom.StyledTextListener; | |
| 82 import dwt.custom.ST; | |
| 83 import dwt.dwthelper.Runnable; | |
| 84 | |
| 85 static import tango.text.Text; | |
| 86 static import tango.text.Util; | |
| 87 static import tango.io.FileConst; | |
| 88 static import tango.text.convert.Utf; | |
| 89 import tango.util.Convert; | |
| 90 import dwt.dwthelper.utils; | |
| 91 | |
| 92 alias tango.text.Text.Text!(char) StringBuffer; | |
| 93 | |
| 94 /** | |
| 95 * A StyledText is an editable user interface object that displays lines | |
| 96 * of text. The following style attributes can be defined for the text: | |
| 97 * <ul> | |
| 98 * <li>foreground color | |
| 99 * <li>background color | |
| 100 * <li>font style (bold, italic, bold-italic, regular) | |
| 101 * <li>underline | |
| 102 * <li>strikeout | |
| 103 * </ul> | |
| 104 * <p> | |
| 105 * In addition to text style attributes, the background color of a line may | |
| 106 * be specified. | |
| 107 * </p><p> | |
| 108 * There are two ways to use this widget when specifying text style information. | |
| 109 * You may use the API that is defined for StyledText or you may define your own | |
| 110 * LineStyleListener. If you define your own listener, you will be responsible | |
| 111 * for maintaining the text style information for the widget. IMPORTANT: You may | |
| 112 * not define your own listener and use the StyledText API. The following | |
| 113 * StyledText API is not supported if you have defined a LineStyleListener: | |
| 114 * <ul> | |
| 115 * <li>getStyleRangeAtOffset(int) | |
| 116 * <li>getStyleRanges() | |
| 117 * <li>replaceStyleRanges(int,int,StyleRange[]) | |
| 118 * <li>setStyleRange(StyleRange) | |
| 119 * <li>setStyleRanges(StyleRange[]) | |
| 120 * </ul> | |
| 121 * </p><p> | |
| 122 * There are two ways to use this widget when specifying line background colors. | |
| 123 * You may use the API that is defined for StyledText or you may define your own | |
| 124 * LineBackgroundListener. If you define your own listener, you will be responsible | |
| 125 * for maintaining the line background color information for the widget. | |
| 126 * IMPORTANT: You may not define your own listener and use the StyledText API. | |
| 127 * The following StyledText API is not supported if you have defined a | |
| 128 * LineBackgroundListener: | |
| 129 * <ul> | |
| 130 * <li>getLineBackground(int) | |
| 131 * <li>setLineBackground(int,int,Color) | |
| 132 * </ul> | |
| 133 * </p><p> | |
| 134 * The content implementation for this widget may also be user-defined. To do so, | |
| 135 * you must implement the StyledTextContent interface and use the StyledText API | |
| 136 * setContent(StyledTextContent) to initialize the widget. | |
| 137 * </p><p> | |
| 138 * <dl> | |
| 139 * <dt><b>Styles:</b><dd>FULL_SELECTION, MULTI, READ_ONLY, SINGLE, WRAP | |
| 140 * <dt><b>Events:</b><dd>ExtendedModify, LineGetBackground, LineGetSegments, LineGetStyle, Modify, Selection, Verify, VerifyKey | |
| 141 * </dl> | |
| 142 * </p><p> | |
| 143 * IMPORTANT: This class is <em>not</em> intended to be subclassed. | |
| 144 * </p> | |
| 145 */ | |
| 146 public class StyledText : Canvas { | |
| 147 | |
| 148 alias Canvas.computeSize computeSize; | |
| 149 | |
| 150 static const char TAB = '\t'; | |
|
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changeset
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151 static const String PlatformLineDelimiter = tango.io.FileConst.FileConst.NewlineString; |
| 155 | 152 static const int BIDI_CARET_WIDTH = 3; |
| 153 static const int DEFAULT_WIDTH = 64; | |
| 154 static const int DEFAULT_HEIGHT = 64; | |
| 155 static const int V_SCROLL_RATE = 50; | |
| 156 static const int H_SCROLL_RATE = 10; | |
| 157 | |
| 158 static const int ExtendedModify = 3000; | |
| 159 static const int LineGetBackground = 3001; | |
| 160 static const int LineGetStyle = 3002; | |
| 161 static const int TextChanging = 3003; | |
| 162 static const int TextSet = 3004; | |
| 163 static const int VerifyKey = 3005; | |
| 164 static const int TextChanged = 3006; | |
| 165 static const int LineGetSegments = 3007; | |
| 166 static const int PaintObject = 3008; | |
| 167 static const int WordNext = 3009; | |
| 168 static const int WordPrevious = 3010; | |
| 169 | |
| 170 static const int PREVIOUS_OFFSET_TRAILING = 0; | |
| 171 static const int OFFSET_LEADING = 1; | |
| 172 | |
| 173 Color selectionBackground; // selection background color | |
| 174 Color selectionForeground; // selection foreground color | |
| 175 StyledTextContent content; // native content (default or user specified) | |
| 176 StyledTextRenderer renderer; | |
| 177 Listener listener; | |
| 178 TextChangeListener textChangeListener; // listener for TextChanging, TextChanged and TextSet events from StyledTextContent | |
| 179 int verticalScrollOffset = 0; // pixel based | |
| 180 int horizontalScrollOffset = 0; // pixel based | |
| 181 int topIndex = 0; // top visible line | |
| 182 int topIndexY; | |
| 183 int clientAreaHeight = 0; // the client area height. Needed to calculate content width for new visible lines during Resize callback | |
| 184 int clientAreaWidth = 0; // the client area width. Needed during Resize callback to determine if line wrap needs to be recalculated | |
| 185 int tabLength = 4; // number of characters in a tab | |
| 186 int leftMargin; | |
| 187 int topMargin; | |
| 188 int rightMargin; | |
| 189 int bottomMargin; | |
| 190 int columnX; // keep track of the horizontal caret position when changing lines/pages. Fixes bug 5935 | |
| 191 int caretOffset = 0; | |
| 192 int caretAlignment; | |
| 193 Point selection; // x and y are start and end caret offsets of selection | |
| 194 Point clipboardSelection; // x and y are start and end caret offsets of previous selection | |
| 195 int selectionAnchor; // position of selection anchor. 0 based offset from beginning of text | |
| 196 Point doubleClickSelection; // selection after last mouse double click | |
| 197 bool editable = true; | |
| 198 bool wordWrap = false; | |
| 199 bool doubleClickEnabled = true; // see getDoubleClickEnabled | |
| 200 bool overwrite = false; // insert/overwrite edit mode | |
| 201 int textLimit = -1; // limits the number of characters the user can type in the widget. Unlimited by default. | |
| 202 int[int] keyActionMap; | |
| 203 Color background = null; // workaround for bug 4791 | |
| 204 Color foreground = null; // | |
| 205 Clipboard clipboard; | |
| 206 int clickCount; | |
| 207 int autoScrollDirection = DWT.NULL; // the direction of autoscrolling (up, down, right, left) | |
| 208 int autoScrollDistance = 0; | |
| 209 int lastTextChangeStart; // cache data of the | |
| 210 int lastTextChangeNewLineCount; // last text changing | |
| 211 int lastTextChangeNewCharCount; // event for use in the | |
| 212 int lastTextChangeReplaceLineCount; // text changed handler | |
| 213 int lastTextChangeReplaceCharCount; | |
| 214 int lastLineBottom; // the bottom pixel of the last line been replaced | |
| 215 bool isMirrored_; | |
| 216 bool bidiColoring = false; // apply the BIDI algorithm on text segments of the same color | |
| 217 Image leftCaretBitmap = null; | |
| 218 Image rightCaretBitmap = null; | |
| 219 int caretDirection = DWT.NULL; | |
| 220 Caret defaultCaret = null; | |
| 221 bool updateCaretDirection = true; | |
| 222 bool fixedLineHeight; | |
| 223 bool dragDetect_ = true; | |
| 224 | |
| 225 int alignment; | |
| 226 bool justify; | |
| 227 int indent; | |
| 228 int lineSpacing; | |
| 229 | |
| 230 const static bool IS_CARBON, IS_GTK, IS_MOTIF; | |
| 231 static this(){ | |
|
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parents:
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diff
changeset
|
232 String platform = DWT.getPlatform(); |
| 155 | 233 IS_CARBON = ("carbon" == platform); |
| 234 IS_GTK = ("gtk" == platform); | |
| 235 IS_MOTIF = ("motif" == platform); | |
| 236 } | |
| 237 | |
| 238 /** | |
| 239 * The Printing class : printing of a range of text. | |
| 240 * An instance of <code>Printing</code> is returned in the | |
| 241 * StyledText#print(Printer) API. The run() method may be | |
| 242 * invoked from any thread. | |
| 243 */ | |
| 244 static class Printing : Runnable { | |
| 245 const static int LEFT = 0; // left aligned header/footer segment | |
| 246 const static int CENTER = 1; // centered header/footer segment | |
| 247 const static int RIGHT = 2; // right aligned header/footer segment | |
| 248 | |
| 249 Printer printer; | |
| 250 StyledTextRenderer printerRenderer; | |
| 251 StyledTextPrintOptions printOptions; | |
| 252 Rectangle clientArea; | |
| 253 FontData fontData; | |
| 254 Font printerFont; | |
| 255 Resource[Resource] resources; | |
| 256 int tabLength; | |
| 257 GC gc; // printer GC | |
| 258 int pageWidth; // width of a printer page in pixels | |
| 259 int startPage; // first page to print | |
| 260 int endPage; // last page to print | |
| 261 int startLine; // first (wrapped) line to print | |
| 262 int endLine; // last (wrapped) line to print | |
| 263 bool singleLine; // widget single line mode | |
| 264 Point selection = null; // selected text | |
| 265 bool mirrored; // indicates the printing gc should be mirrored | |
| 266 int lineSpacing; | |
| 267 int printMargin; | |
| 268 | |
| 269 /** | |
| 270 * Creates an instance of <code>Printing</code>. | |
| 271 * Copies the widget content and rendering data that needs | |
| 272 * to be requested from listeners. | |
| 273 * </p> | |
| 274 * @param parent StyledText widget to print. | |
| 275 * @param printer printer device to print on. | |
| 276 * @param printOptions print options | |
| 277 */ | |
| 278 this(StyledText styledText, Printer printer, StyledTextPrintOptions printOptions) { | |
| 279 this.printer = printer; | |
| 280 this.printOptions = printOptions; | |
| 281 this.mirrored = (styledText.getStyle() & DWT.MIRRORED) !is 0; | |
| 282 singleLine = styledText.isSingleLine(); | |
| 283 startPage = 1; | |
| 284 endPage = int.max; | |
| 285 PrinterData data = printer.getPrinterData(); | |
| 286 if (data.scope_ is PrinterData.PAGE_RANGE) { | |
| 287 startPage = data.startPage; | |
| 288 endPage = data.endPage; | |
| 289 if (endPage < startPage) { | |
| 290 int temp = endPage; | |
| 291 endPage = startPage; | |
| 292 startPage = temp; | |
| 293 } | |
| 294 } else if (data.scope_ is PrinterData.SELECTION) { | |
| 295 selection = styledText.getSelectionRange(); | |
| 296 } | |
| 297 printerRenderer = new StyledTextRenderer(printer, null); | |
| 298 printerRenderer.setContent(copyContent(styledText.getContent())); | |
| 299 cacheLineData(styledText); | |
| 300 } | |
| 301 /** | |
| 302 * Caches all line data that needs to be requested from a listener. | |
| 303 * </p> | |
| 304 * @param printerContent <code>StyledTextContent</code> to request | |
| 305 * line data for. | |
| 306 */ | |
| 307 void cacheLineData(StyledText styledText) { | |
| 308 StyledTextRenderer renderer = styledText.renderer; | |
| 309 renderer.copyInto(printerRenderer); | |
| 310 fontData = styledText.getFont().getFontData()[0]; | |
| 311 tabLength = styledText.tabLength; | |
| 312 int lineCount = printerRenderer.lineCount; | |
| 313 if (styledText.isListening(LineGetBackground) || (styledText.isBidi() && styledText.isListening(LineGetSegments)) || styledText.isListening(LineGetStyle)) { | |
| 314 StyledTextContent content = printerRenderer.content; | |
| 315 for (int i = 0; i < lineCount; i++) { | |
|
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parents:
197
diff
changeset
|
316 String line = content.getLine(i); |
| 155 | 317 int lineOffset = content.getOffsetAtLine(i); |
| 318 StyledTextEvent event = styledText.getLineBackgroundData(lineOffset, line); | |
| 319 if (event !is null && event.lineBackground !is null) { | |
| 320 printerRenderer.setLineBackground(i, 1, event.lineBackground); | |
| 321 } | |
| 322 if (styledText.isBidi()) { | |
| 323 int[] segments = styledText.getBidiSegments(lineOffset, line); | |
| 324 printerRenderer.setLineSegments(i, 1, segments); | |
| 325 } | |
| 326 event = styledText.getLineStyleData(lineOffset, line); | |
| 327 if (event !is null) { | |
| 328 printerRenderer.setLineIndent(i, 1, event.indent); | |
| 329 printerRenderer.setLineAlignment(i, 1, event.alignment); | |
| 330 printerRenderer.setLineJustify(i, 1, event.justify); | |
| 331 printerRenderer.setLineBullet(i, 1, event.bullet); | |
| 332 StyleRange[] styles = event.styles; | |
| 333 if (styles !is null && styles.length > 0) { | |
| 334 printerRenderer.setStyleRanges(event.ranges, styles); | |
| 335 } | |
| 336 } | |
| 337 } | |
| 338 } | |
| 339 Point screenDPI = styledText.getDisplay().getDPI(); | |
| 340 Point printerDPI = printer.getDPI(); | |
| 341 resources = null; | |
| 342 for (int i = 0; i < lineCount; i++) { | |
| 343 Color color = printerRenderer.getLineBackground(i, null); | |
| 344 if (color !is null) { | |
| 345 if (printOptions.printLineBackground) { | |
| 346 Color printerColor; | |
| 347 if ( auto p = color in resources ) { | |
| 348 printerColor = cast(Color)*p; | |
| 349 } | |
| 350 else { | |
| 351 printerColor = new Color (printer, color.getRGB()); | |
| 352 resources[color]=printerColor; | |
| 353 } | |
| 354 printerRenderer.setLineBackground(i, 1, printerColor); | |
| 355 } else { | |
| 356 printerRenderer.setLineBackground(i, 1, null); | |
| 357 } | |
| 358 } | |
| 359 int indent = printerRenderer.getLineIndent(i, 0); | |
| 360 if (indent !is 0) { | |
| 361 printerRenderer.setLineIndent(i, 1, indent * printerDPI.x / screenDPI.x); | |
| 362 } | |
| 363 } | |
| 364 StyleRange[] styles = printerRenderer.styles; | |
| 365 for (int i = 0; i < printerRenderer.styleCount; i++) { | |
| 366 StyleRange style = styles[i]; | |
| 367 Font font = style.font; | |
| 368 if (style.font !is null) { | |
| 369 Font printerFont; | |
| 370 if ( auto p = font in resources ) { | |
| 371 printerFont = cast(Font)*p; | |
| 372 } | |
| 373 else { | |
| 374 printerFont = new Font (printer, font.getFontData()); | |
| 375 resources[font]= printerFont; | |
| 376 } | |
| 377 style.font = printerFont; | |
| 378 } | |
| 379 Color color = style.foreground; | |
| 380 if (color !is null) { | |
| 381 if (printOptions.printTextForeground) { | |
| 382 Color printerColor; | |
| 383 if ( auto p = color in resources ) { | |
| 384 printerColor = cast(Color)*p; | |
| 385 } | |
| 386 else { | |
| 387 printerColor = new Color (printer, color.getRGB()); | |
| 388 resources[color]=printerColor; | |
| 389 } | |
| 390 style.foreground = printerColor; | |
| 391 } else { | |
| 392 style.foreground = null; | |
| 393 } | |
| 394 } | |
| 395 color = style.background; | |
| 396 if (color !is null) { | |
| 397 if (printOptions.printTextBackground) { | |
| 398 Color printerColor; | |
| 399 if ( auto p = color in resources ) { | |
| 400 printerColor = cast(Color)*p; | |
| 401 } | |
| 402 else { | |
| 403 printerColor = new Color (printer, color.getRGB()); | |
| 404 resources[color]=printerColor; | |
| 405 } | |
| 406 style.background = printerColor; | |
| 407 } else { | |
| 408 style.background = null; | |
| 409 } | |
| 410 } | |
| 411 if (!printOptions.printTextFontStyle) { | |
| 412 style.fontStyle = DWT.NORMAL; | |
| 413 } | |
| 414 style.rise = style.rise * printerDPI.y / screenDPI.y; | |
| 415 GlyphMetrics metrics = style.metrics; | |
| 416 if (metrics !is null) { | |
| 417 metrics.ascent = metrics.ascent * printerDPI.y / screenDPI.y; | |
| 418 metrics.descent = metrics.descent * printerDPI.y / screenDPI.y; | |
| 419 metrics.width = metrics.width * printerDPI.x / screenDPI.x; | |
| 420 } | |
| 421 } | |
| 422 lineSpacing = styledText.lineSpacing * printerDPI.y / screenDPI.y; | |
| 423 if (printOptions.printLineNumbers) { | |
| 424 printMargin = 3 * printerDPI.x / screenDPI.x; | |
| 425 } | |
| 426 } | |
| 427 /** | |
| 428 * Copies the text of the specified <code>StyledTextContent</code>. | |
| 429 * </p> | |
| 430 * @param original the <code>StyledTextContent</code> to copy. | |
| 431 */ | |
| 432 StyledTextContent copyContent(StyledTextContent original) { | |
| 433 StyledTextContent printerContent = new DefaultContent(); | |
| 434 int insertOffset = 0; | |
| 435 for (int i = 0; i < original.getLineCount(); i++) { | |
| 436 int insertEndOffset; | |
| 437 if (i < original.getLineCount() - 1) { | |
| 438 insertEndOffset = original.getOffsetAtLine(i + 1); | |
| 439 } else { | |
| 440 insertEndOffset = original.getCharCount(); | |
| 441 } | |
| 442 printerContent.replaceTextRange(insertOffset, 0, original.getTextRange(insertOffset, insertEndOffset - insertOffset)); | |
| 443 insertOffset = insertEndOffset; | |
| 444 } | |
| 445 return printerContent; | |
| 446 } | |
| 447 /** | |
| 448 * Disposes of the resources and the <code>PrintRenderer</code>. | |
| 449 */ | |
| 450 void dispose() { | |
| 451 if (gc !is null) { | |
| 452 gc.dispose(); | |
| 453 gc = null; | |
| 454 } | |
| 455 foreach( resource; resources.values ){ | |
| 456 resource.dispose(); | |
| 457 } | |
| 458 resources = null; | |
| 459 if (printerFont !is null) { | |
| 460 printerFont.dispose(); | |
| 461 printerFont = null; | |
| 462 } | |
| 463 if (printerRenderer !is null) { | |
| 464 printerRenderer.dispose(); | |
| 465 printerRenderer = null; | |
| 466 } | |
| 467 } | |
|
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Changes and fixes for jface
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parents:
178
diff
changeset
|
468 void init_() { |
| 155 | 469 Rectangle trim = printer.computeTrim(0, 0, 0, 0); |
| 470 Point dpi = printer.getDPI(); | |
| 471 | |
| 472 printerFont = new Font( cast(Device)printer, fontData.getName(), fontData.getHeight(), DWT.NORMAL); | |
| 473 clientArea = printer.getClientArea(); | |
| 474 pageWidth = clientArea.width; | |
| 475 // one inch margin around text | |
| 476 clientArea.x = dpi.x + trim.x; | |
| 477 clientArea.y = dpi.y + trim.y; | |
| 478 clientArea.width -= (clientArea.x + trim.width); | |
| 479 clientArea.height -= (clientArea.y + trim.height); | |
| 480 | |
| 481 int style = mirrored ? DWT.RIGHT_TO_LEFT : DWT.LEFT_TO_RIGHT; | |
| 482 gc = new GC(printer, style); | |
| 483 gc.setFont(printerFont); | |
| 484 printerRenderer.setFont(printerFont, tabLength); | |
| 485 int lineHeight = printerRenderer.getLineHeight(); | |
| 486 if (printOptions.header !is null) { | |
| 487 clientArea.y += lineHeight * 2; | |
| 488 clientArea.height -= lineHeight * 2; | |
| 489 } | |
| 490 if (printOptions.footer !is null) { | |
| 491 clientArea.height -= lineHeight * 2; | |
| 492 } | |
| 493 | |
| 494 // TODO not wrapped | |
| 495 StyledTextContent content = printerRenderer.content; | |
| 496 startLine = 0; | |
| 497 endLine = singleLine ? 0 : content.getLineCount() - 1; | |
| 498 PrinterData data = printer.getPrinterData(); | |
| 499 if (data.scope_ is PrinterData.PAGE_RANGE) { | |
| 500 int pageSize = clientArea.height / lineHeight;//WRONG | |
| 501 startLine = (startPage - 1) * pageSize; | |
| 502 } else if (data.scope_ is PrinterData.SELECTION) { | |
| 503 startLine = content.getLineAtOffset(selection.x); | |
| 504 if (selection.y > 0) { | |
| 505 endLine = content.getLineAtOffset(selection.x + selection.y - 1); | |
| 506 } else { | |
| 507 endLine = startLine - 1; | |
| 508 } | |
| 509 } | |
| 510 } | |
| 511 /** | |
| 512 * Prints the lines in the specified page range. | |
| 513 */ | |
| 514 void print() { | |
| 515 Color background = gc.getBackground(); | |
| 516 Color foreground = gc.getForeground(); | |
| 517 int paintY = clientArea.y; | |
| 518 int paintX = clientArea.x; | |
| 519 int width = clientArea.width; | |
| 520 int page = startPage; | |
| 521 int pageBottom = clientArea.y + clientArea.height; | |
| 522 int orientation = gc.getStyle() & (DWT.RIGHT_TO_LEFT | DWT.LEFT_TO_RIGHT); | |
| 523 TextLayout printLayout = null; | |
| 524 if (printOptions.printLineNumbers || printOptions.header !is null || printOptions.footer !is null) { | |
| 525 printLayout = new TextLayout(printer); | |
| 526 printLayout.setFont(printerFont); | |
| 527 } | |
| 528 if (printOptions.printLineNumbers) { | |
| 529 int count = endLine - startLine + 1; | |
| 530 StringBuffer buffer = new StringBuffer("0"); | |
| 531 while ((count /= 10) > 0) buffer.append("0"); | |
| 532 printLayout.setText(buffer.toString()); | |
| 533 int numberingWidth = printLayout.getBounds().width + printMargin; | |
| 534 if (numberingWidth > width) numberingWidth = width; | |
| 535 paintX += numberingWidth; | |
| 536 width -= numberingWidth; | |
| 537 } | |
| 538 for (int i = startLine; i <= endLine && page <= endPage; i++) { | |
| 539 if (paintY is clientArea.y) { | |
| 540 printer.startPage(); | |
| 541 printDecoration(page, true, printLayout); | |
| 542 } | |
| 543 TextLayout layout = printerRenderer.getTextLayout(i, orientation, width, lineSpacing); | |
| 544 Color lineBackground = printerRenderer.getLineBackground(i, background); | |
| 545 int paragraphBottom = paintY + layout.getBounds().height; | |
| 546 if (paragraphBottom <= pageBottom) { | |
| 547 //normal case, the whole paragraph fits in the current page | |
| 548 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); | |
| 549 paintY = paragraphBottom; | |
| 550 } else { | |
| 551 int lineCount = layout.getLineCount(); | |
| 552 while (paragraphBottom > pageBottom && lineCount > 0) { | |
| 553 lineCount--; | |
| 554 paragraphBottom -= layout.getLineBounds(lineCount).height + layout.getSpacing(); | |
| 555 } | |
| 556 if (lineCount is 0) { | |
| 557 //the whole paragraph goes to the next page | |
| 558 printDecoration(page, false, printLayout); | |
| 559 printer.endPage(); | |
| 560 page++; | |
| 561 if (page <= endPage) { | |
| 562 printer.startPage(); | |
| 563 printDecoration(page, true, printLayout); | |
| 564 paintY = clientArea.y; | |
| 565 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); | |
| 566 paintY += layout.getBounds().height; | |
| 567 } | |
| 568 } else { | |
| 569 //draw paragraph top in the current page and paragraph bottom in the next | |
| 570 int height = paragraphBottom - paintY; | |
| 571 gc.setClipping(paintX, paintY, width, height); | |
| 572 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); | |
| 573 printDecoration(page, false, printLayout); | |
| 574 printer.endPage(); | |
| 575 page++; | |
| 576 if (page <= endPage) { | |
| 577 printer.startPage(); | |
| 578 printDecoration(page, true, printLayout); | |
| 579 paintY = clientArea.y - height; | |
| 580 int layoutHeight = layout.getBounds().height; | |
| 581 gc.setClipping(paintX, clientArea.y, width, layoutHeight - height); | |
| 582 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); | |
| 583 paintY += layoutHeight; | |
| 584 } | |
| 585 gc.setClipping(cast(Rectangle)null); | |
| 586 } | |
| 587 } | |
| 588 printerRenderer.disposeTextLayout(layout); | |
| 589 } | |
| 590 if (paintY > clientArea.y) { | |
| 591 // close partial page | |
| 592 printDecoration(page, false, printLayout); | |
| 593 printer.endPage(); | |
| 594 } | |
| 595 if (printLayout !is null) printLayout.dispose(); | |
| 596 } | |
| 597 /** | |
| 598 * Print header or footer decorations. | |
| 599 * | |
| 600 * @param page page number to print, if specified in the StyledTextPrintOptions header or footer. | |
| 601 * @param header true = print the header, false = print the footer | |
| 602 */ | |
| 603 void printDecoration(int page, bool header, TextLayout layout) { | |
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604 String text = header ? printOptions.header : printOptions.footer; |
| 155 | 605 if (text is null) return; |
| 606 int lastSegmentIndex = 0; | |
| 607 for (int i = 0; i < 3; i++) { | |
| 608 int segmentIndex = tango.text.Util.locatePattern( text, StyledTextPrintOptions.SEPARATOR, lastSegmentIndex); | |
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609 String segment; |
| 155 | 610 if (segmentIndex is text.length ) { |
| 611 segment = text[ lastSegmentIndex .. $ ].dup; | |
| 612 printDecorationSegment(segment, i, page, header, layout); | |
| 613 break; | |
| 614 } else { | |
| 615 segment = text[ lastSegmentIndex .. segmentIndex ].dup; | |
| 616 printDecorationSegment(segment, i, page, header, layout); | |
| 617 lastSegmentIndex = segmentIndex + StyledTextPrintOptions.SEPARATOR.length; | |
| 618 } | |
| 619 } | |
| 620 } | |
| 621 /** | |
| 622 * Print one segment of a header or footer decoration. | |
| 623 * Headers and footers have three different segments. | |
| 624 * One each for left aligned, centered, and right aligned text. | |
| 625 * | |
| 626 * @param segment decoration segment to print | |
| 627 * @param alignment alignment of the segment. 0=left, 1=center, 2=right | |
| 628 * @param page page number to print, if specified in the decoration segment. | |
| 629 * @param header true = print the header, false = print the footer | |
| 630 */ | |
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631 void printDecorationSegment(String segment, int alignment, int page, bool header, TextLayout layout) { |
| 155 | 632 int pageIndex = tango.text.Util.locatePattern( segment, StyledTextPrintOptions.PAGE_TAG ); |
| 633 if (pageIndex !is segment.length ) { | |
| 634 int pageTagLength = StyledTextPrintOptions.PAGE_TAG.length; | |
| 635 StringBuffer buffer = new StringBuffer(segment[ 0 .. pageIndex ]); | |
| 636 buffer.append (page); | |
| 637 buffer.append (segment[ pageIndex + pageTagLength .. $ ]); | |
| 638 segment = buffer.toString().dup; | |
| 639 } | |
| 640 if (segment.length > 0) { | |
| 641 layout.setText(segment); | |
| 642 int segmentWidth = layout.getBounds().width; | |
| 643 int segmentHeight = printerRenderer.getLineHeight(); | |
| 644 int drawX = 0, drawY; | |
| 645 if (alignment is LEFT) { | |
| 646 drawX = clientArea.x; | |
| 647 } else if (alignment is CENTER) { | |
| 648 drawX = (pageWidth - segmentWidth) / 2; | |
| 649 } else if (alignment is RIGHT) { | |
| 650 drawX = clientArea.x + clientArea.width - segmentWidth; | |
| 651 } | |
| 652 if (header) { | |
| 653 drawY = clientArea.y - segmentHeight * 2; | |
| 654 } else { | |
| 655 drawY = clientArea.y + clientArea.height + segmentHeight; | |
| 656 } | |
| 657 layout.draw(gc, drawX, drawY); | |
| 658 } | |
| 659 } | |
| 660 void printLine(int x, int y, GC gc, Color foreground, Color background, TextLayout layout, TextLayout printLayout, int index) { | |
| 661 if (background !is null) { | |
| 662 Rectangle rect = layout.getBounds(); | |
| 663 gc.setBackground(background); | |
| 664 gc.fillRectangle(x, y, rect.width, rect.height); | |
| 665 | |
| 666 // int lineCount = layout.getLineCount(); | |
| 667 // for (int i = 0; i < lineCount; i++) { | |
| 668 // Rectangle rect = layout.getLineBounds(i); | |
| 669 // rect.x += paintX; | |
| 670 // rect.y += paintY + layout.getSpacing(); | |
| 671 // rect.width = width;//layout bounds | |
| 672 // gc.fillRectangle(rect); | |
| 673 // } | |
| 674 } | |
| 675 if (printOptions.printLineNumbers) { | |
| 676 FontMetrics metrics = layout.getLineMetrics(0); | |
| 677 printLayout.setAscent(metrics.getAscent() + metrics.getDescent()); | |
| 678 printLayout.setDescent(metrics.getDescent()); | |
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679 printLayout.setText( to!(String)(index) ); |
| 155 | 680 int paintX = x - printMargin - printLayout.getBounds().width; |
| 681 printLayout.draw(gc, paintX, y); | |
| 682 printLayout.setAscent(-1); | |
| 683 printLayout.setDescent(-1); | |
| 684 } | |
| 685 gc.setForeground(foreground); | |
| 686 layout.draw(gc, x, y); | |
| 687 } | |
| 688 /** | |
| 689 * Starts a print job and prints the pages specified in the constructor. | |
| 690 */ | |
| 691 public void run() { | |
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692 String jobName = printOptions.jobName; |
| 155 | 693 if (jobName is null) { |
| 694 jobName = "Printing"; | |
| 695 } | |
| 696 if (printer.startJob(jobName)) { | |
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697 init_(); |
| 155 | 698 print(); |
| 699 dispose(); | |
| 700 printer.endJob(); | |
| 701 } | |
| 702 } | |
| 703 } | |
| 704 /** | |
| 705 * The <code>RTFWriter</code> class is used to write widget content as | |
| 706 * rich text. The implementation complies with the RTF specification | |
| 707 * version 1.5. | |
| 708 * <p> | |
| 709 * toString() is guaranteed to return a valid RTF string only after | |
| 710 * close() has been called. | |
| 711 * </p><p> | |
| 712 * Whole and partial lines and line breaks can be written. Lines will be | |
| 713 * formatted using the styles queried from the LineStyleListener, if | |
| 714 * set, or those set directly in the widget. All styles are applied to | |
| 715 * the RTF stream like they are rendered by the widget. In addition, the | |
| 716 * widget font name and size is used for the whole text. | |
| 717 * </p> | |
| 718 */ | |
| 719 class RTFWriter : TextWriter { | |
| 720 | |
| 721 alias TextWriter.write write; | |
| 722 | |
| 723 static const int DEFAULT_FOREGROUND = 0; | |
| 724 static const int DEFAULT_BACKGROUND = 1; | |
| 725 Color[] colorTable; | |
| 726 Font[] fontTable; | |
| 727 bool WriteUnicode; | |
| 728 | |
| 729 /** | |
| 730 * Creates a RTF writer that writes content starting at offset "start" | |
| 731 * in the document. <code>start</code> and <code>length</code>can be set to specify partial | |
| 732 * lines. | |
| 733 * | |
| 734 * @param start start offset of content to write, 0 based from | |
| 735 * beginning of document | |
| 736 * @param length length of content to write | |
| 737 */ | |
| 738 public this(int start, int length) { | |
| 739 super(start, length); | |
| 740 colorTable ~= getForeground(); | |
| 741 colorTable ~= getBackground(); | |
| 742 fontTable ~= getFont(); | |
| 743 setUnicode(); | |
| 744 } | |
| 745 /** | |
| 746 * Closes the RTF writer. Once closed no more content can be written. | |
| 747 * <b>NOTE:</b> <code>toString()</code> does not return a valid RTF string until | |
| 748 * <code>close()</code> has been called. | |
| 749 */ | |
| 750 public override void close() { | |
| 751 if (!isClosed()) { | |
| 752 writeHeader(); | |
| 753 write("\n}}\0"); | |
| 754 super.close(); | |
| 755 } | |
| 756 } | |
| 757 /** | |
| 758 * Returns the index of the specified color in the RTF color table. | |
| 759 * | |
| 760 * @param color the color | |
| 761 * @param defaultIndex return value if color is null | |
| 762 * @return the index of the specified color in the RTF color table | |
| 763 * or "defaultIndex" if "color" is null. | |
| 764 */ | |
| 765 int getColorIndex(Color color, int defaultIndex) { | |
| 766 if (color is null) return defaultIndex; | |
| 767 int index = -1; | |
| 768 foreach( i, col; colorTable ){ | |
| 769 if( col == color ){ | |
| 770 index = i; | |
| 771 break; | |
| 772 } | |
| 773 } | |
| 774 if (index is -1) { | |
| 775 index = colorTable.length; | |
| 776 colorTable ~= color; | |
| 777 } | |
| 778 return index; | |
| 779 } | |
| 780 /** | |
| 781 * Returns the index of the specified color in the RTF color table. | |
| 782 * | |
| 783 * @param color the color | |
| 784 * @param defaultIndex return value if color is null | |
| 785 * @return the index of the specified color in the RTF color table | |
| 786 * or "defaultIndex" if "color" is null. | |
| 787 */ | |
| 788 int getFontIndex(Font font) { | |
| 789 int index = -1; | |
| 790 foreach( i, f; colorTable ){ | |
| 791 if( f == font ){ | |
| 792 index = i; | |
| 793 break; | |
| 794 } | |
| 795 } | |
| 796 if (index is -1) { | |
| 797 index = fontTable.length; | |
| 798 fontTable ~= font; | |
| 799 } | |
| 800 return index; | |
| 801 } | |
| 802 /** | |
| 803 * Determines if Unicode RTF should be written. | |
| 804 * Don't write Unicode RTF on Windows 95/98/ME or NT. | |
| 805 */ | |
| 806 void setUnicode() { | |
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807 // const String Win95 = "windows 95"; |
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808 // const String Win98 = "windows 98"; |
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809 // const String WinME = "windows me"; |
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810 // const String WinNT = "windows nt"; |
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811 // String osName = System.getProperty("os.name").toLowerCase(); |
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812 // String osVersion = System.getProperty("os.version"); |
| 155 | 813 // int majorVersion = 0; |
| 814 // | |
| 815 // if (osName.startsWith(WinNT) && osVersion !is null) { | |
| 816 // int majorIndex = osVersion.indexOf('.'); | |
| 817 // if (majorIndex !is -1) { | |
| 818 // osVersion = osVersion.substring(0, majorIndex); | |
| 819 // try { | |
| 820 // majorVersion = Integer.parseInt(osVersion); | |
| 821 // } catch (NumberFormatException exception) { | |
| 822 // // ignore exception. version number remains unknown. | |
| 823 // // will write without Unicode | |
| 824 // } | |
| 825 // } | |
| 826 // } | |
| 827 // WriteUnicode = !osName.startsWith(Win95) && | |
| 828 // !osName.startsWith(Win98) && | |
| 829 // !osName.startsWith(WinME) && | |
| 830 // (!osName.startsWith(WinNT) || majorVersion > 4); | |
| 831 WriteUnicode = true; // we are on linux-gtk | |
| 832 } | |
| 833 /** | |
| 834 * Appends the specified segment of "string" to the RTF data. | |
| 835 * Copy from <code>start</code> up to, but excluding, <code>end</code>. | |
| 836 * | |
| 837 * @param string string to copy a segment from. Must not contain | |
| 838 * line breaks. Line breaks should be written using writeLineDelimiter() | |
| 839 * @param start start offset of segment. 0 based. | |
| 840 * @param end end offset of segment | |
| 841 */ | |
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842 void write(String string, int start, int end) { |
| 155 | 843 wchar[] wstring = tango.text.convert.Utf.toString16( string[ start .. end ] ); |
| 844 start = 0; | |
| 845 end = wstring.length; | |
| 846 for (int index = start; index < end; index++) { | |
| 847 wchar ch = wstring[index]; | |
| 848 if (ch > 0xFF && WriteUnicode) { | |
| 849 // write the sub string from the last escaped character | |
| 850 // to the current one. Fixes bug 21698. | |
| 851 if (index > start) { | |
| 852 write(tango.text.convert.Utf.toString(wstring[start .. index ])); | |
| 853 } | |
| 854 write("\\u"); | |
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855 write( to!(String)( cast(short)ch )); |
| 155 | 856 write(' '); // control word delimiter |
| 857 start = index + 1; | |
| 858 } else if (ch is '}' || ch is '{' || ch is '\\') { | |
| 859 // write the sub string from the last escaped character | |
| 860 // to the current one. Fixes bug 21698. | |
| 861 if (index > start) { | |
| 862 write(tango.text.convert.Utf.toString(wstring[start .. index])); | |
| 863 } | |
| 864 write('\\'); | |
| 865 write(cast(char)ch); // ok because one of {}\ | |
| 866 start = index + 1; | |
| 867 } | |
| 868 } | |
| 869 // write from the last escaped character to the end. | |
| 870 // Fixes bug 21698. | |
| 871 if (start < end) { | |
| 872 write(tango.text.convert.Utf.toString(wstring[ start .. end])); | |
| 873 } | |
| 874 } | |
| 875 /** | |
| 876 * Writes the RTF header including font table and color table. | |
| 877 */ | |
| 878 void writeHeader() { | |
| 879 StringBuffer header = new StringBuffer(); | |
| 880 FontData fontData = getFont().getFontData()[0]; | |
| 881 header.append("{\\rtf1\\ansi"); | |
| 882 // specify code page, necessary for copy to work in bidi | |
| 883 // systems that don't support Unicode RTF. | |
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884 // PORTING_TODO: String cpg = System.getProperty("file.encoding").toLowerCase(); |
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885 String cpg = "UTF16"; |
| 155 | 886 /+ |
| 887 if (cpg.startsWith("cp") || cpg.startsWith("ms")) { | |
| 888 cpg = cpg.substring(2, cpg.length()); | |
| 889 header.append("\\ansicpg"); | |
| 890 header.append(cpg); | |
| 891 } | |
| 892 +/ | |
| 893 header.append("\\uc0\\deff0{\\fonttbl{\\f0\\fnil "); | |
| 894 header.append(fontData.getName()); | |
| 895 header.append(";"); | |
| 896 for (int i = 1; i < fontTable.length; i++) { | |
| 897 header.append("\\f"); | |
| 898 header.append(i); | |
| 899 header.append(" "); | |
| 900 FontData fd = (cast(Font)fontTable[i]).getFontData()[0]; | |
| 901 header.append(fd.getName()); | |
| 902 header.append(";"); | |
| 903 } | |
| 904 header.append("}}\n{\\colortbl"); | |
| 905 for (int i = 0; i < colorTable.length; i++) { | |
| 906 Color color = cast(Color) colorTable[i]; | |
| 907 header.append("\\red"); | |
| 908 header.append(color.getRed()); | |
| 909 header.append("\\green"); | |
| 910 header.append(color.getGreen()); | |
| 911 header.append("\\blue"); | |
| 912 header.append(color.getBlue()); | |
| 913 header.append(";"); | |
| 914 } | |
| 915 // some RTF readers ignore the deff0 font tag. Explicitly | |
| 916 // set the font for the whole document to work around this. | |
| 917 header.append("}\n{\\f0\\fs"); | |
| 918 // font size is specified in half points | |
| 919 header.append(fontData.getHeight() * 2); | |
| 920 header.append(" "); | |
| 921 write(header.toString(), 0); | |
| 922 } | |
| 923 /** | |
| 924 * Appends the specified line text to the RTF data. Lines will be formatted | |
| 925 * using the styles queried from the LineStyleListener, if set, or those set | |
| 926 * directly in the widget. | |
| 927 * | |
| 928 * @param line line text to write as RTF. Must not contain line breaks | |
| 929 * Line breaks should be written using writeLineDelimiter() | |
| 930 * @param lineOffset offset of the line. 0 based from the start of the | |
| 931 * widget document. Any text occurring before the start offset or after the | |
| 932 * end offset specified during object creation is ignored. | |
| 933 * @exception DWTException <ul> | |
| 934 * <li>ERROR_IO when the writer is closed.</li> | |
| 935 * </ul> | |
| 936 */ | |
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937 public override void writeLine(String line, int lineOffset) { |
| 155 | 938 if (isClosed()) { |
| 939 DWT.error(DWT.ERROR_IO); | |
| 940 } | |
| 941 int lineIndex = content.getLineAtOffset(lineOffset); | |
| 942 int lineAlignment, lineIndent; | |
| 943 bool lineJustify; | |
| 944 int[] ranges; | |
| 945 StyleRange[] styles; | |
| 946 StyledTextEvent event = getLineStyleData(lineOffset, line); | |
| 947 if (event !is null) { | |
| 948 lineAlignment = event.alignment; | |
| 949 lineIndent = event.indent; | |
| 950 lineJustify = event.justify; | |
| 951 ranges = event.ranges; | |
| 952 styles = event.styles; | |
| 953 } else { | |
| 954 lineAlignment = renderer.getLineAlignment(lineIndex, alignment); | |
| 955 lineIndent = renderer.getLineIndent(lineIndex, indent); | |
| 956 lineJustify = renderer.getLineJustify(lineIndex, justify); | |
| 957 ranges = renderer.getRanges(lineOffset, line.length); | |
| 958 styles = renderer.getStyleRanges(lineOffset, line.length, false); | |
| 959 } | |
| 960 if (styles is null) styles = new StyleRange[0]; | |
| 961 Color lineBackground = renderer.getLineBackground(lineIndex, null); | |
| 962 event = getLineBackgroundData(lineOffset, line); | |
| 963 if (event !is null && event.lineBackground !is null) lineBackground = event.lineBackground; | |
| 964 writeStyledLine(line, lineOffset, ranges, styles, lineBackground, lineIndent, lineAlignment, lineJustify); | |
| 965 } | |
| 966 /** | |
| 967 * Appends the specified line delimiter to the RTF data. | |
| 968 * | |
| 969 * @param lineDelimiter line delimiter to write as RTF. | |
| 970 * @exception DWTException <ul> | |
| 971 * <li>ERROR_IO when the writer is closed.</li> | |
| 972 * </ul> | |
| 973 */ | |
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974 public override void writeLineDelimiter(String lineDelimiter) { |
| 155 | 975 if (isClosed()) { |
| 976 DWT.error(DWT.ERROR_IO); | |
| 977 } | |
| 978 write(lineDelimiter, 0, lineDelimiter.length); | |
| 979 write("\\par "); | |
| 980 } | |
| 981 /** | |
| 982 * Appends the specified line text to the RTF data. | |
| 983 * <p> | |
| 984 * Use the colors and font styles specified in "styles" and "lineBackground". | |
| 985 * Formatting is written to reflect the text rendering by the text widget. | |
| 986 * Style background colors take precedence over the line background color. | |
| 987 * Background colors are written using the \highlight tag (vs. the \cb tag). | |
| 988 * </p> | |
| 989 * | |
| 990 * @param line line text to write as RTF. Must not contain line breaks | |
| 991 * Line breaks should be written using writeLineDelimiter() | |
| 992 * @param lineOffset offset of the line. 0 based from the start of the | |
| 993 * widget document. Any text occurring before the start offset or after the | |
| 994 * end offset specified during object creation is ignored. | |
| 995 * @param styles styles to use for formatting. Must not be null. | |
| 996 * @param lineBackground line background color to use for formatting. | |
| 997 * May be null. | |
| 998 */ | |
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999 void writeStyledLine(String line, int lineOffset, int ranges[], StyleRange[] styles, Color lineBackground, int indent, int alignment, bool justify) { |
| 155 | 1000 int lineLength = line.length; |
| 1001 int startOffset = getStart(); | |
| 1002 int writeOffset = startOffset - lineOffset; | |
| 1003 if (writeOffset >= lineLength) return; | |
| 1004 int lineIndex = Math.max(0, writeOffset); | |
| 1005 | |
| 1006 write("\\fi"); | |
| 1007 write(indent); | |
| 1008 switch (alignment) { | |
| 1009 case DWT.LEFT: write("\\ql"); break; | |
| 1010 case DWT.CENTER: write("\\qc"); break; | |
| 1011 case DWT.RIGHT: write("\\qr"); break; | |
| 1012 default: | |
| 1013 } | |
| 1014 if (justify) write("\\qj"); | |
| 1015 write(" "); | |
| 1016 | |
| 1017 if (lineBackground !is null) { | |
| 1018 write("{\\highlight"); | |
| 1019 write(getColorIndex(lineBackground, DEFAULT_BACKGROUND)); | |
| 1020 write(" "); | |
| 1021 } | |
| 1022 int endOffset = startOffset + super.getCharCount(); | |
| 1023 int lineEndOffset = Math.min(lineLength, endOffset - lineOffset); | |
| 1024 for (int i = 0; i < styles.length; i++) { | |
| 1025 StyleRange style = styles[i]; | |
| 1026 int start, end; | |
| 1027 if (ranges !is null) { | |
| 1028 start = ranges[i << 1] - lineOffset; | |
| 1029 end = start + ranges[(i << 1) + 1]; | |
| 1030 } else { | |
| 1031 start = style.start - lineOffset; | |
| 1032 end = start + style.length; | |
| 1033 } | |
| 1034 // skip over partial first line | |
| 1035 if (end < writeOffset) { | |
| 1036 continue; | |
| 1037 } | |
| 1038 // style starts beyond line end or RTF write end | |
| 1039 if (start >= lineEndOffset) { | |
| 1040 break; | |
| 1041 } | |
| 1042 // write any unstyled text | |
| 1043 if (lineIndex < start) { | |
| 1044 // copy to start of style | |
| 1045 // style starting beyond end of write range or end of line | |
| 1046 // is guarded against above. | |
| 1047 write(line, lineIndex, start); | |
| 1048 lineIndex = start; | |
| 1049 } | |
| 1050 // write styled text | |
| 1051 write("{\\cf"); | |
| 1052 write(getColorIndex(style.foreground, DEFAULT_FOREGROUND)); | |
| 1053 int colorIndex = getColorIndex(style.background, DEFAULT_BACKGROUND); | |
| 1054 if (colorIndex !is DEFAULT_BACKGROUND) { | |
| 1055 write("\\highlight"); | |
| 1056 write(colorIndex); | |
| 1057 } | |
| 1058 Font font = style.font; | |
| 1059 if (font !is null) { | |
| 1060 int fontIndex = getFontIndex(font); | |
| 1061 write("\\f"); | |
| 1062 write(fontIndex); | |
| 1063 FontData fontData = font.getFontData()[0]; | |
| 1064 write("\\fs"); | |
| 1065 write(fontData.getHeight() * 2); | |
| 1066 } else { | |
| 1067 if ((style.fontStyle & DWT.BOLD) !is 0) { | |
| 1068 write("\\b"); | |
| 1069 } | |
| 1070 if ((style.fontStyle & DWT.ITALIC) !is 0) { | |
| 1071 write("\\i"); | |
| 1072 } | |
| 1073 } | |
| 1074 if (style.underline) { | |
| 1075 write("\\ul"); | |
| 1076 } | |
| 1077 if (style.strikeout) { | |
| 1078 write("\\strike"); | |
| 1079 } | |
| 1080 write(" "); | |
| 1081 // copy to end of style or end of write range or end of line | |
| 1082 int copyEnd = Math.min(end, lineEndOffset); | |
| 1083 // guard against invalid styles and let style processing continue | |
| 1084 copyEnd = Math.max(copyEnd, lineIndex); | |
| 1085 write(line, lineIndex, copyEnd); | |
| 1086 if (font is null) { | |
| 1087 if ((style.fontStyle & DWT.BOLD) !is 0) { | |
| 1088 write("\\b0"); | |
| 1089 } | |
| 1090 if ((style.fontStyle & DWT.ITALIC) !is 0) { | |
| 1091 write("\\i0"); | |
| 1092 } | |
| 1093 } | |
| 1094 if (style.underline) { | |
| 1095 write("\\ul0"); | |
| 1096 } | |
| 1097 if (style.strikeout) { | |
| 1098 write("\\strike0"); | |
| 1099 } | |
| 1100 write("}"); | |
| 1101 lineIndex = copyEnd; | |
| 1102 } | |
| 1103 // write unstyled text at the end of the line | |
| 1104 if (lineIndex < lineEndOffset) { | |
| 1105 write(line, lineIndex, lineEndOffset); | |
| 1106 } | |
| 1107 if (lineBackground !is null) write("}"); | |
| 1108 } | |
| 1109 } | |
| 1110 /** | |
| 1111 * The <code>TextWriter</code> class is used to write widget content to | |
| 1112 * a string. Whole and partial lines and line breaks can be written. To write | |
| 1113 * partial lines, specify the start and length of the desired segment | |
| 1114 * during object creation. | |
| 1115 * <p> | |
| 1116 * </b>NOTE:</b> <code>toString()</code> is guaranteed to return a valid string only after close() | |
| 1117 * has been called. | |
| 1118 * </p> | |
| 1119 */ | |
| 1120 class TextWriter { | |
| 1121 private StringBuffer buffer; | |
| 1122 private int startOffset; // offset of first character that will be written | |
| 1123 private int endOffset; // offset of last character that will be written. | |
| 1124 // 0 based from the beginning of the widget text. | |
| 1125 private bool isClosed_ = false; | |
| 1126 | |
| 1127 /** | |
| 1128 * Creates a writer that writes content starting at offset "start" | |
| 1129 * in the document. <code>start</code> and <code>length</code> can be set to specify partial lines. | |
| 1130 * | |
| 1131 * @param start start offset of content to write, 0 based from beginning of document | |
| 1132 * @param length length of content to write | |
| 1133 */ | |
| 1134 public this(int start, int length) { | |
| 1135 buffer = new StringBuffer(length); | |
| 1136 startOffset = start; | |
| 1137 endOffset = start + length; | |
| 1138 } | |
| 1139 /** | |
| 1140 * Closes the writer. Once closed no more content can be written. | |
| 1141 * <b>NOTE:</b> <code>toString()</code> is not guaranteed to return a valid string unless | |
| 1142 * the writer is closed. | |
| 1143 */ | |
| 1144 public void close() { | |
| 1145 if (!isClosed_) { | |
| 1146 isClosed_ = true; | |
| 1147 } | |
| 1148 } | |
| 1149 /** | |
| 1150 * Returns the number of characters to write. | |
| 1151 * @return the integer number of characters to write | |
| 1152 */ | |
| 1153 public int getCharCount() { | |
| 1154 return endOffset - startOffset; | |
| 1155 } | |
| 1156 /** | |
| 1157 * Returns the offset where writing starts. 0 based from the start of | |
| 1158 * the widget text. Used to write partial lines. | |
| 1159 * @return the integer offset where writing starts | |
| 1160 */ | |
| 1161 public int getStart() { | |
| 1162 return startOffset; | |
| 1163 } | |
| 1164 /** | |
| 1165 * Returns whether the writer is closed. | |
| 1166 * @return a bool specifying whether or not the writer is closed | |
| 1167 */ | |
| 1168 public bool isClosed() { | |
| 1169 return isClosed_; | |
| 1170 } | |
| 1171 /** | |
| 1172 * Returns the string. <code>close()</code> must be called before <code>toString()</code> | |
| 1173 * is guaranteed to return a valid string. | |
| 1174 * | |
| 1175 * @return the string | |
| 1176 */ | |
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1177 public override String toString() { |
| 155 | 1178 return buffer.toString(); |
| 1179 } | |
| 1180 /** | |
| 1181 * Appends the given string to the data. | |
| 1182 */ | |
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1183 void write(String string) { |
| 155 | 1184 buffer.append(string); |
| 1185 } | |
| 1186 /** | |
| 1187 * Inserts the given string to the data at the specified offset. | |
| 1188 * <p> | |
| 1189 * Do nothing if "offset" is < 0 or > getCharCount() | |
| 1190 * </p> | |
| 1191 * | |
| 1192 * @param string text to insert | |
| 1193 * @param offset offset in the existing data to insert "string" at. | |
| 1194 */ | |
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1195 void write(String string, int offset) { |
| 155 | 1196 if (offset < 0 || offset > buffer.length()) { |
| 1197 return; | |
| 1198 } | |
| 1199 buffer.select( offset ); | |
| 1200 buffer.prepend( string ); | |
| 1201 } | |
| 1202 /** | |
| 1203 * Appends the given int to the data. | |
| 1204 */ | |
| 1205 void write(int i) { | |
| 1206 buffer.append(i); | |
| 1207 } | |
| 1208 /** | |
| 1209 * Appends the given character to the data. | |
| 1210 */ | |
| 1211 void write(char i) { | |
| 1212 buffer.append(i); | |
| 1213 } | |
| 1214 /** | |
| 1215 * Appends the specified line text to the data. | |
| 1216 * | |
| 1217 * @param line line text to write. Must not contain line breaks | |
| 1218 * Line breaks should be written using writeLineDelimiter() | |
| 1219 * @param lineOffset offset of the line. 0 based from the start of the | |
| 1220 * widget document. Any text occurring before the start offset or after the | |
| 1221 * end offset specified during object creation is ignored. | |
| 1222 * @exception DWTException <ul> | |
| 1223 * <li>ERROR_IO when the writer is closed.</li> | |
| 1224 * </ul> | |
| 1225 */ | |
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1226 public void writeLine(String line, int lineOffset) { |
| 155 | 1227 if (isClosed_) { |
| 1228 DWT.error(DWT.ERROR_IO); | |
| 1229 } | |
| 1230 int writeOffset = startOffset - lineOffset; | |
| 1231 int lineLength = line.length; | |
| 1232 int lineIndex; | |
| 1233 if (writeOffset >= lineLength) { | |
| 1234 return; // whole line is outside write range | |
| 1235 } else if (writeOffset > 0) { | |
| 1236 lineIndex = writeOffset; // line starts before write start | |
| 1237 } else { | |
| 1238 lineIndex = 0; | |
| 1239 } | |
| 1240 int copyEnd = Math.min(lineLength, endOffset - lineOffset); | |
| 1241 if (lineIndex < copyEnd) { | |
| 1242 write(line[lineIndex .. copyEnd]); | |
| 1243 } | |
| 1244 } | |
| 1245 /** | |
| 1246 * Appends the specified line delimiter to the data. | |
| 1247 * | |
| 1248 * @param lineDelimiter line delimiter to write | |
| 1249 * @exception DWTException <ul> | |
| 1250 * <li>ERROR_IO when the writer is closed.</li> | |
| 1251 * </ul> | |
| 1252 */ | |
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1253 public void writeLineDelimiter(String lineDelimiter) { |
| 155 | 1254 if (isClosed_) { |
| 1255 DWT.error(DWT.ERROR_IO); | |
| 1256 } | |
| 1257 write(lineDelimiter); | |
| 1258 } | |
| 1259 } | |
| 1260 | |
| 1261 /** | |
| 1262 * Constructs a new instance of this class given its parent | |
| 1263 * and a style value describing its behavior and appearance. | |
| 1264 * <p> | |
| 1265 * The style value is either one of the style constants defined in | |
| 1266 * class <code>DWT</code> which is applicable to instances of this | |
| 1267 * class, or must be built by <em>bitwise OR</em>'ing together | |
| 1268 * (that is, using the <code>int</code> "|" operator) two or more | |
| 1269 * of those <code>DWT</code> style constants. The class description | |
| 1270 * lists the style constants that are applicable to the class. | |
| 1271 * Style bits are also inherited from superclasses. | |
| 1272 * </p> | |
| 1273 * | |
| 1274 * @param parent a widget which will be the parent of the new instance (cannot be null) | |
| 1275 * @param style the style of widget to construct | |
| 1276 * | |
| 1277 * @exception IllegalArgumentException <ul> | |
| 1278 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> | |
| 1279 * </ul> | |
| 1280 * @exception DWTException <ul> | |
| 1281 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> | |
| 1282 * </ul> | |
| 1283 * | |
| 1284 * @see DWT#FULL_SELECTION | |
| 1285 * @see DWT#MULTI | |
| 1286 * @see DWT#READ_ONLY | |
| 1287 * @see DWT#SINGLE | |
| 1288 * @see DWT#WRAP | |
| 1289 * @see #getStyle | |
| 1290 */ | |
| 1291 public this(Composite parent, int style) { | |
| 1292 selection = new Point(0, 0); | |
| 1293 super(parent, checkStyle(style)); | |
| 1294 // set the fg in the OS to ensure that these are the same as StyledText, necessary | |
| 1295 // for ensuring that the bg/fg the IME box uses is the same as what StyledText uses | |
| 1296 super.setForeground(getForeground()); | |
| 1297 super.setDragDetect(false); | |
| 1298 Display display = getDisplay(); | |
| 1299 isMirrored_ = (super.getStyle() & DWT.MIRRORED) !is 0; | |
| 1300 fixedLineHeight = true; | |
| 1301 if ((style & DWT.READ_ONLY) !is 0) { | |
| 1302 setEditable(false); | |
| 1303 } | |
| 1304 leftMargin = rightMargin = isBidiCaret() ? BIDI_CARET_WIDTH - 1: 0; | |
| 1305 if ((style & DWT.SINGLE) !is 0 && (style & DWT.BORDER) !is 0) { | |
| 1306 leftMargin = topMargin = rightMargin = bottomMargin = 2; | |
| 1307 } | |
| 1308 alignment = style & (DWT.LEFT | DWT.RIGHT | DWT.CENTER); | |
| 1309 if (alignment is 0) alignment = DWT.LEFT; | |
| 1310 clipboard = new Clipboard(display); | |
| 1311 installDefaultContent(); | |
| 1312 renderer = new StyledTextRenderer(getDisplay(), this); | |
| 1313 renderer.setContent(content); | |
| 1314 renderer.setFont(getFont(), tabLength); | |
| 1315 defaultCaret = new Caret(this, DWT.NULL); | |
| 1316 if ((style & DWT.WRAP) !is 0) { | |
| 1317 setWordWrap(true); | |
| 1318 } | |
| 1319 if (isBidiCaret()) { | |
| 1320 createCaretBitmaps(); | |
| 1321 Runnable runnable = new class() Runnable { | |
| 1322 public void run() { | |
| 1323 int direction = BidiUtil.getKeyboardLanguage() is BidiUtil.KEYBOARD_BIDI ? DWT.RIGHT : DWT.LEFT; | |
| 1324 if (direction is caretDirection) return; | |
| 1325 if (getCaret() !is defaultCaret) return; | |
| 1326 Point newCaretPos = getPointAtOffset(caretOffset); | |
| 1327 setCaretLocation(newCaretPos, direction); | |
| 1328 } | |
| 1329 }; | |
| 1330 BidiUtil.addLanguageListener(handle, runnable); | |
| 1331 } | |
| 1332 setCaret(defaultCaret); | |
| 1333 calculateScrollBars(); | |
| 1334 createKeyBindings(); | |
| 1335 setCursor(display.getSystemCursor(DWT.CURSOR_IBEAM)); | |
| 1336 installListeners(); | |
| 1337 initializeAccessible(); | |
| 1338 setData("DEFAULT_DROP_TARGET_EFFECT", new StyledTextDropTargetEffect(this)); | |
| 1339 } | |
| 1340 /** | |
| 1341 * Adds an extended modify listener. An ExtendedModify event is sent by the | |
| 1342 * widget when the widget text has changed. | |
| 1343 * | |
| 1344 * @param extendedModifyListener the listener | |
| 1345 * @exception DWTException <ul> | |
| 1346 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1347 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1348 * </ul> | |
| 1349 * @exception IllegalArgumentException <ul> | |
| 1350 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1351 * </ul> | |
| 1352 */ | |
| 1353 public void addExtendedModifyListener(ExtendedModifyListener extendedModifyListener) { | |
| 1354 checkWidget(); | |
| 1355 if (extendedModifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1356 StyledTextListener typedListener = new StyledTextListener(extendedModifyListener); | |
| 1357 addListener(ExtendedModify, typedListener); | |
| 1358 } | |
| 1359 /** | |
| 1360 * Adds a bidirectional segment listener. | |
| 1361 * <p> | |
| 1362 * A BidiSegmentEvent is sent | |
| 1363 * whenever a line of text is measured or rendered. The user can | |
| 1364 * specify text ranges in the line that should be treated as if they | |
| 1365 * had a different direction than the surrounding text. | |
| 1366 * This may be used when adjacent segments of right-to-left text should | |
| 1367 * not be reordered relative to each other. | |
| 1368 * E.g., Multiple Java string literals in a right-to-left language | |
| 1369 * should generally remain in logical order to each other, that is, the | |
| 1370 * way they are stored. | |
| 1371 * </p> | |
| 1372 * | |
| 1373 * @param listener the listener | |
| 1374 * @exception DWTException <ul> | |
| 1375 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1376 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1377 * </ul> | |
| 1378 * @exception IllegalArgumentException <ul> | |
| 1379 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1380 * </ul> | |
| 1381 * @see BidiSegmentEvent | |
| 1382 * @since 2.0 | |
| 1383 */ | |
| 1384 public void addBidiSegmentListener(BidiSegmentListener listener) { | |
| 1385 checkWidget(); | |
| 1386 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1387 addListener(LineGetSegments, new StyledTextListener(listener)); | |
| 1388 } | |
| 1389 /** | |
| 1390 * Adds a line background listener. A LineGetBackground event is sent by the | |
| 1391 * widget to determine the background color for a line. | |
| 1392 * | |
| 1393 * @param listener the listener | |
| 1394 * @exception DWTException <ul> | |
| 1395 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1396 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1397 * </ul> | |
| 1398 * @exception IllegalArgumentException <ul> | |
| 1399 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1400 * </ul> | |
| 1401 */ | |
| 1402 public void addLineBackgroundListener(LineBackgroundListener listener) { | |
| 1403 checkWidget(); | |
| 1404 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1405 if (!isListening(LineGetBackground)) { | |
| 1406 renderer.clearLineBackground(0, content.getLineCount()); | |
| 1407 } | |
| 1408 addListener(LineGetBackground, new StyledTextListener(listener)); | |
| 1409 } | |
| 1410 /** | |
| 1411 * Adds a line style listener. A LineGetStyle event is sent by the widget to | |
| 1412 * determine the styles for a line. | |
| 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 */ | |
| 1423 public void addLineStyleListener(LineStyleListener listener) { | |
| 1424 checkWidget(); | |
| 1425 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1426 if (!isListening(LineGetStyle)) { | |
| 1427 setStyleRanges(0, 0, null, null, true); | |
| 1428 renderer.clearLineStyle(0, content.getLineCount()); | |
| 1429 } | |
| 1430 addListener(LineGetStyle, new StyledTextListener(listener)); | |
| 1431 } | |
| 1432 /** | |
| 1433 * Adds a modify listener. A Modify event is sent by the widget when the widget text | |
| 1434 * has changed. | |
| 1435 * | |
| 1436 * @param modifyListener the listener | |
| 1437 * @exception DWTException <ul> | |
| 1438 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1439 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1440 * </ul> | |
| 1441 * @exception IllegalArgumentException <ul> | |
| 1442 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1443 * </ul> | |
| 1444 */ | |
| 1445 public void addModifyListener(ModifyListener modifyListener) { | |
| 1446 checkWidget(); | |
| 1447 if (modifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1448 addListener(DWT.Modify, new TypedListener(modifyListener)); | |
| 1449 } | |
| 1450 /** | |
| 1451 * Adds a paint object listener. A paint object event is sent by the widget when an object | |
| 1452 * needs to be drawn. | |
| 1453 * | |
| 1454 * @param listener the listener | |
| 1455 * @exception DWTException <ul> | |
| 1456 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1457 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1458 * </ul> | |
| 1459 * @exception IllegalArgumentException <ul> | |
| 1460 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1461 * </ul> | |
| 1462 * | |
| 1463 * @since 3.2 | |
| 1464 * | |
| 1465 * @see PaintObjectListener | |
| 1466 * @see PaintObjectEvent | |
| 1467 */ | |
| 1468 public void addPaintObjectListener(PaintObjectListener listener) { | |
| 1469 checkWidget(); | |
| 1470 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1471 addListener(PaintObject, new StyledTextListener(listener)); | |
| 1472 } | |
| 1473 /** | |
| 1474 * Adds a selection listener. A Selection event is sent by the widget when the | |
| 1475 * user changes the selection. | |
| 1476 * <p> | |
| 1477 * When <code>widgetSelected</code> is called, the event x and y fields contain | |
| 1478 * the start and end caret indices of the selection. | |
| 1479 * <code>widgetDefaultSelected</code> is not called for StyledTexts. | |
| 1480 * </p> | |
| 1481 * | |
| 1482 * @param listener the listener which should be notified when the user changes the receiver's selection | |
| 1483 | |
| 1484 * @exception IllegalArgumentException <ul> | |
| 1485 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 1486 * </ul> | |
| 1487 * @exception DWTException <ul> | |
| 1488 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1489 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1490 * </ul> | |
| 1491 * | |
| 1492 * @see SelectionListener | |
| 1493 * @see #removeSelectionListener | |
| 1494 * @see SelectionEvent | |
| 1495 */ | |
| 1496 public void addSelectionListener(SelectionListener listener) { | |
| 1497 checkWidget(); | |
| 1498 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1499 addListener(DWT.Selection, new TypedListener(listener)); | |
| 1500 } | |
| 1501 /** | |
| 1502 * Adds a verify key listener. A VerifyKey event is sent by the widget when a key | |
| 1503 * is pressed. The widget ignores the key press if the listener sets the doit field | |
| 1504 * of the event to false. | |
| 1505 * | |
| 1506 * @param listener the listener | |
| 1507 * @exception DWTException <ul> | |
| 1508 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1509 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1510 * </ul> | |
| 1511 * @exception IllegalArgumentException <ul> | |
| 1512 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1513 * </ul> | |
| 1514 */ | |
| 1515 public void addVerifyKeyListener(VerifyKeyListener listener) { | |
| 1516 checkWidget(); | |
| 1517 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1518 addListener(VerifyKey, new StyledTextListener(listener)); | |
| 1519 } | |
| 1520 /** | |
| 1521 * Adds a verify listener. A Verify event is sent by the widget when the widget text | |
| 1522 * is about to change. The listener can set the event text and the doit field to | |
| 1523 * change the text that is set in the widget or to force the widget to ignore the | |
| 1524 * text change. | |
| 1525 * | |
| 1526 * @param verifyListener the listener | |
| 1527 * @exception DWTException <ul> | |
| 1528 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1529 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1530 * </ul> | |
| 1531 * @exception IllegalArgumentException <ul> | |
| 1532 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1533 * </ul> | |
| 1534 */ | |
| 1535 public void addVerifyListener(VerifyListener verifyListener) { | |
| 1536 checkWidget(); | |
| 1537 if (verifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1538 addListener(DWT.Verify, new TypedListener(verifyListener)); | |
| 1539 } | |
| 1540 /** | |
| 1541 * Adds a word movement listener. A movement event is sent when the boundary | |
| 1542 * of a word is needed. For example, this occurs during word next and word | |
| 1543 * previous actions. | |
| 1544 * | |
| 1545 * @param movementListener the listener | |
| 1546 * @exception DWTException <ul> | |
| 1547 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1548 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1549 * </ul> | |
| 1550 * @exception IllegalArgumentException <ul> | |
| 1551 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1552 * </ul> | |
| 1553 * | |
| 1554 * @see MovementEvent | |
| 1555 * @see MovementListener | |
| 1556 * @see #removeWordMovementListener | |
| 1557 * | |
| 1558 * @since 3.3 | |
| 1559 */ | |
| 1560 public void addWordMovementListener(MovementListener movementListener) { | |
| 1561 checkWidget(); | |
| 1562 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1563 addListener(WordNext, new StyledTextListener(movementListener)); | |
| 1564 addListener(WordPrevious, new StyledTextListener(movementListener)); | |
| 1565 } | |
| 1566 /** | |
| 1567 * Appends a string to the text at the end of the widget. | |
| 1568 * | |
| 1569 * @param string the string to be appended | |
|
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1570 * @see #replaceTextRange(int,int,String) |
| 155 | 1571 * @exception DWTException <ul> |
| 1572 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1573 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1574 * </ul> | |
| 1575 * @exception IllegalArgumentException <ul> | |
| 1576 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1577 * </ul> | |
| 1578 */ | |
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1579 public void append(String string) { |
| 155 | 1580 checkWidget(); |
| 1581 if (string is null) { | |
| 1582 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1583 } | |
| 1584 int lastChar = Math.max(getCharCount(), 0); | |
| 1585 replaceTextRange(lastChar, 0, string); | |
| 1586 } | |
| 1587 /** | |
| 1588 * Calculates the scroll bars | |
| 1589 */ | |
| 1590 void calculateScrollBars() { | |
| 1591 ScrollBar horizontalBar = getHorizontalBar(); | |
| 1592 ScrollBar verticalBar = getVerticalBar(); | |
| 1593 setScrollBars(true); | |
| 1594 if (verticalBar !is null) { | |
| 1595 verticalBar.setIncrement(getVerticalIncrement()); | |
| 1596 } | |
| 1597 if (horizontalBar !is null) { | |
| 1598 horizontalBar.setIncrement(getHorizontalIncrement()); | |
| 1599 } | |
| 1600 } | |
| 1601 /** | |
| 1602 * Calculates the top index based on the current vertical scroll offset. | |
| 1603 * The top index is the index of the topmost fully visible line or the | |
| 1604 * topmost partially visible line if no line is fully visible. | |
| 1605 * The top index starts at 0. | |
| 1606 */ | |
| 1607 void calculateTopIndex(int delta) { | |
| 1608 int oldTopIndex = topIndex; | |
| 1609 int oldTopIndexY = topIndexY; | |
| 1610 if (isFixedLineHeight()) { | |
| 1611 int verticalIncrement = getVerticalIncrement(); | |
| 1612 if (verticalIncrement is 0) { | |
| 1613 return; | |
| 1614 } | |
| 1615 topIndex = Compatibility.ceil(getVerticalScrollOffset(), verticalIncrement); | |
| 1616 // Set top index to partially visible top line if no line is fully | |
| 1617 // visible but at least some of the widget client area is visible. | |
| 1618 // Fixes bug 15088. | |
| 1619 if (topIndex > 0) { | |
| 1620 if (clientAreaHeight > 0) { | |
| 1621 int bottomPixel = getVerticalScrollOffset() + clientAreaHeight; | |
| 1622 int fullLineTopPixel = topIndex * verticalIncrement; | |
| 1623 int fullLineVisibleHeight = bottomPixel - fullLineTopPixel; | |
| 1624 // set top index to partially visible line if no line fully fits in | |
| 1625 // client area or if space is available but not used (the latter should | |
| 1626 // never happen because we use claimBottomFreeSpace) | |
| 1627 if (fullLineVisibleHeight < verticalIncrement) { | |
| 1628 topIndex--; | |
| 1629 } | |
| 1630 } else if (topIndex >= content.getLineCount()) { | |
| 1631 topIndex = content.getLineCount() - 1; | |
| 1632 } | |
| 1633 } | |
| 1634 } else { | |
| 1635 if (delta >= 0) { | |
| 1636 delta -= topIndexY; | |
| 1637 int lineIndex = topIndex; | |
| 1638 int lineCount = content.getLineCount(); | |
| 1639 while (lineIndex < lineCount) { | |
| 1640 if (delta <= 0) break; | |
| 1641 delta -= renderer.getLineHeight(lineIndex++); | |
| 1642 } | |
| 1643 if (lineIndex < lineCount && -delta + renderer.getLineHeight(lineIndex) <= clientAreaHeight - topMargin - bottomMargin) { | |
| 1644 topIndex = lineIndex; | |
| 1645 topIndexY = -delta; | |
| 1646 } else { | |
| 1647 topIndex = lineIndex - 1; | |
| 1648 topIndexY = -renderer.getLineHeight(topIndex) - delta; | |
| 1649 } | |
| 1650 } else { | |
| 1651 delta -= topIndexY; | |
| 1652 int lineIndex = topIndex; | |
| 1653 while (lineIndex > 0) { | |
| 1654 int lineHeight = renderer.getLineHeight(lineIndex - 1); | |
| 1655 if (delta + lineHeight > 0) break; | |
| 1656 delta += lineHeight; | |
| 1657 lineIndex--; | |
| 1658 } | |
| 1659 if (lineIndex is 0 || -delta + renderer.getLineHeight(lineIndex) <= clientAreaHeight - topMargin - bottomMargin) { | |
| 1660 topIndex = lineIndex; | |
| 1661 topIndexY = - delta; | |
| 1662 } else { | |
| 1663 topIndex = lineIndex - 1; | |
| 1664 topIndexY = - renderer.getLineHeight(topIndex) - delta; | |
| 1665 } | |
| 1666 } | |
| 1667 } | |
| 1668 if (topIndex !is oldTopIndex || oldTopIndexY !is topIndexY) { | |
| 1669 renderer.calculateClientArea(); | |
| 1670 setScrollBars(false); | |
| 1671 } | |
| 1672 } | |
| 1673 /** | |
| 1674 * Hides the scroll bars if widget is created in single line mode. | |
| 1675 */ | |
| 1676 static int checkStyle(int style) { | |
| 1677 if ((style & DWT.SINGLE) !is 0) { | |
| 1678 style &= ~(DWT.H_SCROLL | DWT.V_SCROLL | DWT.WRAP | DWT.MULTI); | |
| 1679 } else { | |
| 1680 style |= DWT.MULTI; | |
| 1681 if ((style & DWT.WRAP) !is 0) { | |
| 1682 style &= ~DWT.H_SCROLL; | |
| 1683 } | |
| 1684 } | |
| 1685 style |= DWT.NO_REDRAW_RESIZE | DWT.DOUBLE_BUFFERED | DWT.NO_BACKGROUND; | |
| 1686 return style; | |
| 1687 } | |
| 1688 /** | |
| 1689 * Scrolls down the text to use new space made available by a resize or by | |
| 1690 * deleted lines. | |
| 1691 */ | |
| 1692 void claimBottomFreeSpace() { | |
| 1693 int clientAreaHeight = this.clientAreaHeight - topMargin - bottomMargin; | |
| 1694 if (isFixedLineHeight()) { | |
| 1695 int lineHeight = renderer.getLineHeight(); | |
| 1696 int newVerticalOffset = Math.max(0, content.getLineCount() * lineHeight - clientAreaHeight); | |
| 1697 if (newVerticalOffset < getVerticalScrollOffset()) { | |
| 1698 scrollVertical(newVerticalOffset - getVerticalScrollOffset(), true); | |
| 1699 } | |
| 1700 } else { | |
| 1701 int bottomIndex = getPartialBottomIndex(); | |
| 1702 int height = getLinePixel(bottomIndex + 1); | |
| 1703 if (clientAreaHeight > height) { | |
| 1704 scrollVertical(-getAvailableHeightAbove(clientAreaHeight - height), true); | |
| 1705 } | |
| 1706 } | |
| 1707 } | |
| 1708 /** | |
| 1709 * Scrolls text to the right to use new space made available by a resize. | |
| 1710 */ | |
| 1711 void claimRightFreeSpace() { | |
| 1712 int newHorizontalOffset = Math.max(0, renderer.getWidth() - (clientAreaWidth - leftMargin - rightMargin)); | |
| 1713 if (newHorizontalOffset < horizontalScrollOffset) { | |
| 1714 // item is no longer drawn past the right border of the client area | |
| 1715 // align the right end of the item with the right border of the | |
| 1716 // client area (window is scrolled right). | |
| 1717 scrollHorizontal(newHorizontalOffset - horizontalScrollOffset, true); | |
| 1718 } | |
| 1719 } | |
| 1720 /** | |
| 1721 * Removes the widget selection. | |
| 1722 * | |
| 1723 * @param sendEvent a Selection event is sent when set to true and when the selection is actually reset. | |
| 1724 */ | |
| 1725 void clearSelection(bool sendEvent) { | |
| 1726 int selectionStart = selection.x; | |
| 1727 int selectionEnd = selection.y; | |
| 1728 resetSelection(); | |
| 1729 // redraw old selection, if any | |
| 1730 if (selectionEnd - selectionStart > 0) { | |
| 1731 int length = content.getCharCount(); | |
| 1732 // called internally to remove selection after text is removed | |
| 1733 // therefore make sure redraw range is valid. | |
| 1734 int redrawStart = Math.min(selectionStart, length); | |
| 1735 int redrawEnd = Math.min(selectionEnd, length); | |
| 1736 if (redrawEnd - redrawStart > 0) { | |
| 1737 internalRedrawRange(redrawStart, redrawEnd - redrawStart); | |
| 1738 } | |
| 1739 if (sendEvent) { | |
| 1740 sendSelectionEvent(); | |
| 1741 } | |
| 1742 } | |
| 1743 } | |
| 1744 public override Point computeSize (int wHint, int hHint, bool changed) { | |
| 1745 checkWidget(); | |
| 1746 int lineCount = (getStyle() & DWT.SINGLE) !is 0 ? 1 : content.getLineCount(); | |
| 1747 int width = 0; | |
| 1748 int height = 0; | |
| 1749 if (wHint is DWT.DEFAULT || hHint is DWT.DEFAULT) { | |
| 1750 Display display = getDisplay(); | |
| 1751 int maxHeight = display.getClientArea().height; | |
| 1752 for (int lineIndex = 0; lineIndex < lineCount; lineIndex++) { | |
| 1753 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 1754 if (wordWrap) layout.setWidth(wHint is 0 ? 1 : wHint); | |
| 1755 Rectangle rect = layout.getBounds(); | |
| 1756 height += rect.height; | |
| 1757 width = Math.max(width, rect.width); | |
| 1758 renderer.disposeTextLayout(layout); | |
| 1759 if (isFixedLineHeight() && height > maxHeight) break; | |
| 1760 } | |
| 1761 if (isFixedLineHeight()) { | |
| 1762 height = lineCount * renderer.getLineHeight(); | |
| 1763 } | |
| 1764 } | |
| 1765 // Use default values if no text is defined. | |
| 1766 if (width is 0) width = DEFAULT_WIDTH; | |
| 1767 if (height is 0) height = DEFAULT_HEIGHT; | |
| 1768 if (wHint !is DWT.DEFAULT) width = wHint; | |
| 1769 if (hHint !is DWT.DEFAULT) height = hHint; | |
| 1770 int wTrim = leftMargin + rightMargin + getCaretWidth(); | |
| 1771 int hTrim = topMargin + bottomMargin; | |
| 1772 Rectangle rect = computeTrim(0, 0, width + wTrim, height + hTrim); | |
| 1773 return new Point (rect.width, rect.height); | |
| 1774 } | |
| 1775 /** | |
| 1776 * Copies the selected text to the <code>DND.CLIPBOARD</code> clipboard. | |
| 1777 * <p> | |
| 1778 * The text will be put on the clipboard in plain text format and RTF format. | |
| 1779 * The <code>DND.CLIPBOARD</code> clipboard is used for data that is | |
| 1780 * transferred by keyboard accelerator (such as Ctrl+C/Ctrl+V) or | |
| 1781 * by menu action. | |
| 1782 * </p> | |
| 1783 * | |
| 1784 * @exception DWTException <ul> | |
| 1785 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1786 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1787 * </ul> | |
| 1788 */ | |
| 1789 public void copy() { | |
| 1790 checkWidget(); | |
| 1791 copy(DND.CLIPBOARD); | |
| 1792 } | |
| 1793 /** | |
| 1794 * Copies the selected text to the specified clipboard. The text will be put in the | |
| 1795 * clipboard in plain text format and RTF format. | |
| 1796 * <p> | |
| 1797 * The clipboardType is one of the clipboard constants defined in class | |
| 1798 * <code>DND</code>. The <code>DND.CLIPBOARD</code> clipboard is | |
| 1799 * used for data that is transferred by keyboard accelerator (such as Ctrl+C/Ctrl+V) | |
| 1800 * or by menu action. The <code>DND.SELECTION_CLIPBOARD</code> | |
| 1801 * clipboard is used for data that is transferred by selecting text and pasting | |
| 1802 * with the middle mouse button. | |
| 1803 * </p> | |
| 1804 * | |
| 1805 * @param clipboardType indicates the type of clipboard | |
| 1806 * | |
| 1807 * @exception DWTException <ul> | |
| 1808 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1809 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1810 * </ul> | |
| 1811 * | |
| 1812 * @since 3.1 | |
| 1813 */ | |
| 1814 public void copy(int clipboardType) { | |
| 1815 checkWidget(); | |
| 1816 if (clipboardType !is DND.CLIPBOARD && clipboardType !is DND.SELECTION_CLIPBOARD) return; | |
| 1817 int length = selection.y - selection.x; | |
| 1818 if (length > 0) { | |
| 1819 try { | |
| 1820 setClipboardContent(selection.x, length, clipboardType); | |
| 1821 } catch (DWTError error) { | |
| 1822 // Copy to clipboard failed. This happens when another application | |
| 1823 // is accessing the clipboard while we copy. Ignore the error. | |
| 1824 // Fixes 1GDQAVN | |
| 1825 // Rethrow all other errors. Fixes bug 17578. | |
| 1826 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 1827 throw error; | |
| 1828 } | |
| 1829 } | |
| 1830 } | |
| 1831 } | |
| 1832 /** | |
| 1833 * Returns the alignment of the widget. | |
| 1834 * | |
| 1835 * @return the alignment | |
| 1836 * | |
| 1837 * @exception DWTException <ul> | |
| 1838 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1839 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1840 * </ul> | |
| 1841 * | |
| 1842 * @see #getLineAlignment(int) | |
| 1843 * | |
| 1844 * @since 3.2 | |
| 1845 */ | |
| 1846 public int getAlignment() { | |
| 1847 checkWidget(); | |
| 1848 return alignment; | |
| 1849 } | |
| 1850 int getAvailableHeightAbove(int height) { | |
| 1851 int maxHeight = verticalScrollOffset; | |
| 1852 if (maxHeight is -1) { | |
| 1853 int lineIndex = topIndex - 1; | |
| 1854 maxHeight = -topIndexY; | |
| 1855 if (topIndexY > 0) { | |
| 1856 maxHeight += renderer.getLineHeight(lineIndex--); | |
| 1857 } | |
| 1858 while (height > maxHeight && lineIndex >= 0) { | |
| 1859 maxHeight += renderer.getLineHeight(lineIndex--); | |
| 1860 } | |
| 1861 } | |
| 1862 return Math.min(height, maxHeight); | |
| 1863 } | |
| 1864 int getAvailableHeightBellow(int height) { | |
| 1865 int partialBottomIndex = getPartialBottomIndex(); | |
| 1866 int topY = getLinePixel(partialBottomIndex); | |
| 1867 int lineHeight = renderer.getLineHeight(partialBottomIndex); | |
| 1868 int availableHeight = 0; | |
| 1869 int clientAreaHeight = this.clientAreaHeight - topMargin - bottomMargin; | |
| 1870 if (topY + lineHeight > clientAreaHeight) { | |
| 1871 availableHeight = lineHeight - (clientAreaHeight - topY); | |
| 1872 } | |
| 1873 int lineIndex = partialBottomIndex + 1; | |
| 1874 int lineCount = content.getLineCount(); | |
| 1875 while (height > availableHeight && lineIndex < lineCount) { | |
| 1876 availableHeight += renderer.getLineHeight(lineIndex++); | |
| 1877 } | |
| 1878 return Math.min(height, availableHeight); | |
| 1879 } | |
| 1880 /** | |
| 1881 * Returns a string that uses only the line delimiter specified by the | |
| 1882 * StyledTextContent implementation. | |
| 1883 * <p> | |
| 1884 * Returns only the first line if the widget has the DWT.SINGLE style. | |
| 1885 * </p> | |
| 1886 * | |
| 1887 * @param text the text that may have line delimiters that don't | |
| 1888 * match the model line delimiter. Possible line delimiters | |
| 1889 * are CR ('\r'), LF ('\n'), CR/LF ("\r\n") | |
| 1890 * @return the converted text that only uses the line delimiter | |
| 1891 * specified by the model. Returns only the first line if the widget | |
| 1892 * has the DWT.SINGLE style. | |
| 1893 */ | |
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1894 String getModelDelimitedText(String text) { |
| 155 | 1895 int length = text.length; |
| 1896 if (length is 0) { | |
| 1897 return text; | |
| 1898 } | |
| 1899 int crIndex = 0; | |
| 1900 int lfIndex = 0; | |
| 1901 int i = 0; | |
| 1902 StringBuffer convertedText = new StringBuffer(length); | |
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1903 String delimiter = getLineDelimiter(); |
| 155 | 1904 while (i < length) { |
| 1905 if (crIndex !is -1) { | |
| 1906 crIndex = tango.text.Util.locate( text, DWT.CR, i); | |
| 1907 if( crIndex is text.length ) crIndex = -1; | |
| 1908 } | |
| 1909 if (lfIndex !is -1) { | |
| 1910 lfIndex = tango.text.Util.locate( text, DWT.LF, i); | |
| 1911 if( lfIndex is text.length ) lfIndex = -1; | |
| 1912 } | |
| 1913 if (lfIndex is -1 && crIndex is -1) { // no more line breaks? | |
| 1914 break; | |
| 1915 } else if ((crIndex < lfIndex && crIndex !is -1) || lfIndex is -1) { | |
| 1916 convertedText.append(text[i .. crIndex]); | |
| 1917 if (lfIndex is crIndex + 1) { // CR/LF combination? | |
| 1918 i = lfIndex + 1; | |
| 1919 } else { | |
| 1920 i = crIndex + 1; | |
| 1921 } | |
| 1922 } else { // LF occurs before CR! | |
| 1923 convertedText.append(text[i .. lfIndex]); | |
| 1924 i = lfIndex + 1; | |
| 1925 } | |
| 1926 if (isSingleLine()) { | |
| 1927 break; | |
| 1928 } | |
| 1929 convertedText.append(delimiter); | |
| 1930 } | |
| 1931 // copy remaining text if any and if not in single line mode or no | |
| 1932 // text copied thus far (because there only is one line) | |
| 1933 if (i < length && (!isSingleLine() || convertedText.length() is 0)) { | |
| 1934 convertedText.append(text[i .. $]); | |
| 1935 } | |
| 1936 return convertedText.toString(); | |
| 1937 } | |
| 1938 bool checkDragDetect(Event event) { | |
| 1939 if (!isListening(DWT.DragDetect)) return false; | |
| 1940 if (IS_MOTIF) { | |
| 1941 if (event.button !is 2) return false; | |
| 1942 } else { | |
| 1943 if (event.button !is 1) return false; | |
| 1944 } | |
| 1945 if (selection.x is selection.y) return false; | |
| 1946 int offset = getOffsetAtPoint(event.x, event.y); | |
| 1947 if (offset > selection.x && offset < selection.y) { | |
| 1948 return dragDetect(event); | |
| 1949 } | |
| 1950 return false; | |
| 1951 } | |
| 1952 /** | |
| 1953 * Creates default key bindings. | |
| 1954 */ | |
| 1955 void createKeyBindings() { | |
| 1956 int nextKey = isMirrored() ? DWT.ARROW_LEFT : DWT.ARROW_RIGHT; | |
| 1957 int previousKey = isMirrored() ? DWT.ARROW_RIGHT : DWT.ARROW_LEFT; | |
| 1958 | |
| 1959 // Navigation | |
| 1960 setKeyBinding(DWT.ARROW_UP, ST.LINE_UP); | |
| 1961 setKeyBinding(DWT.ARROW_DOWN, ST.LINE_DOWN); | |
| 1962 if (IS_CARBON) { | |
| 1963 setKeyBinding(previousKey | DWT.MOD1, ST.LINE_START); | |
| 1964 setKeyBinding(nextKey | DWT.MOD1, ST.LINE_END); | |
| 1965 setKeyBinding(DWT.HOME, ST.TEXT_START); | |
| 1966 setKeyBinding(DWT.END, ST.TEXT_END); | |
| 1967 setKeyBinding(DWT.ARROW_UP | DWT.MOD1, ST.TEXT_START); | |
| 1968 setKeyBinding(DWT.ARROW_DOWN | DWT.MOD1, ST.TEXT_END); | |
| 1969 setKeyBinding(nextKey | DWT.MOD3, ST.WORD_NEXT); | |
| 1970 setKeyBinding(previousKey | DWT.MOD3, ST.WORD_PREVIOUS); | |
| 1971 } else { | |
| 1972 setKeyBinding(DWT.HOME, ST.LINE_START); | |
| 1973 setKeyBinding(DWT.END, ST.LINE_END); | |
| 1974 setKeyBinding(DWT.HOME | DWT.MOD1, ST.TEXT_START); | |
| 1975 setKeyBinding(DWT.END | DWT.MOD1, ST.TEXT_END); | |
| 1976 setKeyBinding(nextKey | DWT.MOD1, ST.WORD_NEXT); | |
| 1977 setKeyBinding(previousKey | DWT.MOD1, ST.WORD_PREVIOUS); | |
| 1978 } | |
| 1979 setKeyBinding(DWT.PAGE_UP, ST.PAGE_UP); | |
| 1980 setKeyBinding(DWT.PAGE_DOWN, ST.PAGE_DOWN); | |
| 1981 setKeyBinding(DWT.PAGE_UP | DWT.MOD1, ST.WINDOW_START); | |
| 1982 setKeyBinding(DWT.PAGE_DOWN | DWT.MOD1, ST.WINDOW_END); | |
| 1983 setKeyBinding(nextKey, ST.COLUMN_NEXT); | |
| 1984 setKeyBinding(previousKey, ST.COLUMN_PREVIOUS); | |
| 1985 | |
| 1986 // Selection | |
| 1987 setKeyBinding(DWT.ARROW_UP | DWT.MOD2, ST.SELECT_LINE_UP); | |
| 1988 setKeyBinding(DWT.ARROW_DOWN | DWT.MOD2, ST.SELECT_LINE_DOWN); | |
| 1989 if (IS_CARBON) { | |
| 1990 setKeyBinding(previousKey | DWT.MOD1 | DWT.MOD2, ST.SELECT_LINE_START); | |
| 1991 setKeyBinding(nextKey | DWT.MOD1 | DWT.MOD2, ST.SELECT_LINE_END); | |
| 1992 setKeyBinding(DWT.HOME | DWT.MOD2, ST.SELECT_TEXT_START); | |
| 1993 setKeyBinding(DWT.END | DWT.MOD2, ST.SELECT_TEXT_END); | |
| 1994 setKeyBinding(DWT.ARROW_UP | DWT.MOD1 | DWT.MOD2, ST.SELECT_TEXT_START); | |
| 1995 setKeyBinding(DWT.ARROW_DOWN | DWT.MOD1 | DWT.MOD2, ST.SELECT_TEXT_END); | |
| 1996 setKeyBinding(nextKey | DWT.MOD2 | DWT.MOD3, ST.SELECT_WORD_NEXT); | |
| 1997 setKeyBinding(previousKey | DWT.MOD2 | DWT.MOD3, ST.SELECT_WORD_PREVIOUS); | |
| 1998 } else { | |
| 1999 setKeyBinding(DWT.HOME | DWT.MOD2, ST.SELECT_LINE_START); | |
| 2000 setKeyBinding(DWT.END | DWT.MOD2, ST.SELECT_LINE_END); | |
| 2001 setKeyBinding(DWT.HOME | DWT.MOD1 | DWT.MOD2, ST.SELECT_TEXT_START); | |
| 2002 setKeyBinding(DWT.END | DWT.MOD1 | DWT.MOD2, ST.SELECT_TEXT_END); | |
| 2003 setKeyBinding(nextKey | DWT.MOD1 | DWT.MOD2, ST.SELECT_WORD_NEXT); | |
| 2004 setKeyBinding(previousKey | DWT.MOD1 | DWT.MOD2, ST.SELECT_WORD_PREVIOUS); | |
| 2005 } | |
| 2006 setKeyBinding(DWT.PAGE_UP | DWT.MOD2, ST.SELECT_PAGE_UP); | |
| 2007 setKeyBinding(DWT.PAGE_DOWN | DWT.MOD2, ST.SELECT_PAGE_DOWN); | |
| 2008 setKeyBinding(DWT.PAGE_UP | DWT.MOD1 | DWT.MOD2, ST.SELECT_WINDOW_START); | |
| 2009 setKeyBinding(DWT.PAGE_DOWN | DWT.MOD1 | DWT.MOD2, ST.SELECT_WINDOW_END); | |
| 2010 setKeyBinding(nextKey | DWT.MOD2, ST.SELECT_COLUMN_NEXT); | |
| 2011 setKeyBinding(previousKey | DWT.MOD2, ST.SELECT_COLUMN_PREVIOUS); | |
| 2012 | |
| 2013 // Modification | |
| 2014 // Cut, Copy, Paste | |
| 2015 setKeyBinding('X' | DWT.MOD1, ST.CUT); | |
| 2016 setKeyBinding('C' | DWT.MOD1, ST.COPY); | |
| 2017 setKeyBinding('V' | DWT.MOD1, ST.PASTE); | |
| 2018 if (IS_CARBON) { | |
| 2019 setKeyBinding(DWT.DEL | DWT.MOD2, ST.DELETE_NEXT); | |
| 2020 setKeyBinding(DWT.BS | DWT.MOD3, ST.DELETE_WORD_PREVIOUS); | |
| 2021 setKeyBinding(DWT.DEL | DWT.MOD3, ST.DELETE_WORD_NEXT); | |
| 2022 } else { | |
| 2023 // Cut, Copy, Paste Wordstar style | |
| 2024 setKeyBinding(DWT.DEL | DWT.MOD2, ST.CUT); | |
| 2025 setKeyBinding(DWT.INSERT | DWT.MOD1, ST.COPY); | |
| 2026 setKeyBinding(DWT.INSERT | DWT.MOD2, ST.PASTE); | |
| 2027 } | |
| 2028 setKeyBinding(DWT.BS | DWT.MOD2, ST.DELETE_PREVIOUS); | |
| 2029 setKeyBinding(DWT.BS, ST.DELETE_PREVIOUS); | |
| 2030 setKeyBinding(DWT.DEL, ST.DELETE_NEXT); | |
| 2031 setKeyBinding(DWT.BS | DWT.MOD1, ST.DELETE_WORD_PREVIOUS); | |
| 2032 setKeyBinding(DWT.DEL | DWT.MOD1, ST.DELETE_WORD_NEXT); | |
| 2033 | |
| 2034 // Miscellaneous | |
| 2035 setKeyBinding(DWT.INSERT, ST.TOGGLE_OVERWRITE); | |
| 2036 } | |
| 2037 /** | |
| 2038 * Create the bitmaps to use for the caret in bidi mode. This | |
| 2039 * method only needs to be called upon widget creation and when the | |
| 2040 * font changes (the caret bitmap height needs to match font height). | |
| 2041 */ | |
| 2042 void createCaretBitmaps() { | |
| 2043 int caretWidth = BIDI_CARET_WIDTH; | |
| 2044 Display display = getDisplay(); | |
| 2045 if (leftCaretBitmap !is null) { | |
| 2046 if (defaultCaret !is null && leftCaretBitmap==defaultCaret.getImage()) { | |
| 2047 defaultCaret.setImage(null); | |
| 2048 } | |
| 2049 leftCaretBitmap.dispose(); | |
| 2050 } | |
| 2051 int lineHeight = renderer.getLineHeight(); | |
| 2052 leftCaretBitmap = new Image(display, caretWidth, lineHeight); | |
| 2053 GC gc = new GC (leftCaretBitmap); | |
| 2054 gc.setBackground(display.getSystemColor(DWT.COLOR_BLACK)); | |
| 2055 gc.fillRectangle(0, 0, caretWidth, lineHeight); | |
| 2056 gc.setForeground(display.getSystemColor(DWT.COLOR_WHITE)); | |
| 2057 gc.drawLine(0,0,0,lineHeight); | |
| 2058 gc.drawLine(0,0,caretWidth-1,0); | |
| 2059 gc.drawLine(0,1,1,1); | |
| 2060 gc.dispose(); | |
| 2061 | |
| 2062 if (rightCaretBitmap !is null) { | |
| 2063 if (defaultCaret !is null && rightCaretBitmap==defaultCaret.getImage()) { | |
| 2064 defaultCaret.setImage(null); | |
| 2065 } | |
| 2066 rightCaretBitmap.dispose(); | |
| 2067 } | |
| 2068 rightCaretBitmap = new Image(display, caretWidth, lineHeight); | |
| 2069 gc = new GC (rightCaretBitmap); | |
| 2070 gc.setBackground(display.getSystemColor(DWT.COLOR_BLACK)); | |
| 2071 gc.fillRectangle(0, 0, caretWidth, lineHeight); | |
| 2072 gc.setForeground(display.getSystemColor(DWT.COLOR_WHITE)); | |
| 2073 gc.drawLine(caretWidth-1,0,caretWidth-1,lineHeight); | |
| 2074 gc.drawLine(0,0,caretWidth-1,0); | |
| 2075 gc.drawLine(caretWidth-1,1,1,1); | |
| 2076 gc.dispose(); | |
| 2077 } | |
| 2078 /** | |
| 2079 * Moves the selected text to the clipboard. The text will be put in the | |
| 2080 * clipboard in plain text format and RTF format. | |
| 2081 * | |
| 2082 * @exception DWTException <ul> | |
| 2083 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 2084 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 2085 * </ul> | |
| 2086 */ | |
| 2087 public void cut(){ | |
| 2088 checkWidget(); | |
| 2089 int length = selection.y - selection.x; | |
| 2090 if (length > 0) { | |
| 2091 try { | |
| 2092 setClipboardContent(selection.x, length, DND.CLIPBOARD); | |
| 2093 } catch (DWTError error) { | |
| 2094 // Copy to clipboard failed. This happens when another application | |
| 2095 // is accessing the clipboard while we copy. Ignore the error. | |
| 2096 // Fixes 1GDQAVN | |
| 2097 // Rethrow all other errors. Fixes bug 17578. | |
| 2098 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 2099 throw error; | |
| 2100 } | |
| 2101 // Abort cut operation if copy to clipboard fails. | |
| 2102 // Fixes bug 21030. | |
| 2103 return; | |
| 2104 } | |
| 2105 doDelete(); | |
| 2106 } | |
| 2107 } | |
| 2108 /** | |
| 2109 * A mouse move event has occurred. See if we should start autoscrolling. If | |
| 2110 * the move position is outside of the client area, initiate autoscrolling. | |
| 2111 * Otherwise, we've moved back into the widget so end autoscrolling. | |
| 2112 */ | |
| 2113 void doAutoScroll(Event event) { | |
| 2114 if (event.y > clientAreaHeight) { | |
| 2115 doAutoScroll(DWT.DOWN, event.y - clientAreaHeight); | |
| 2116 } else if (event.y < 0) { | |
| 2117 doAutoScroll(DWT.UP, -event.y); | |
| 2118 } else if (event.x < leftMargin && !wordWrap) { | |
| 2119 doAutoScroll(ST.COLUMN_PREVIOUS, leftMargin - event.x); | |
| 2120 } else if (event.x > clientAreaWidth - leftMargin - rightMargin && !wordWrap) { | |
| 2121 doAutoScroll(ST.COLUMN_NEXT, event.x - (clientAreaWidth - leftMargin - rightMargin)); | |
| 2122 } else { | |
| 2123 endAutoScroll(); | |
| 2124 } | |
| 2125 } | |
| 2126 /** | |
| 2127 * Initiates autoscrolling. | |
| 2128 * | |
| 2129 * @param direction DWT.UP, DWT.DOWN, DWT.COLUMN_NEXT, DWT.COLUMN_PREVIOUS | |
| 2130 */ | |
| 2131 void doAutoScroll(int direction, int distance) { | |
| 2132 autoScrollDistance = distance; | |
| 2133 // If we're already autoscrolling in the given direction do nothing | |
| 2134 if (autoScrollDirection is direction) { | |
| 2135 return; | |
| 2136 } | |
| 2137 | |
| 2138 Runnable timer = null; | |
| 2139 final Display disp = getDisplay(); | |
| 2140 // Set a timer that will simulate the user pressing and holding | |
| 2141 // down a cursor key (i.e., arrowUp, arrowDown). | |
| 2142 if (direction is DWT.UP) { | |
| 2143 timer = new class(disp) Runnable { | |
| 2144 Display display; | |
| 2145 this( Display d ){ this.display = d; } | |
| 2146 public void run() { | |
| 2147 if (autoScrollDirection is DWT.UP) { | |
| 2148 doSelectionPageUp(autoScrollDistance); | |
| 2149 display.timerExec(V_SCROLL_RATE, this); | |
| 2150 } | |
| 2151 } | |
| 2152 }; | |
| 2153 autoScrollDirection = direction; | |
| 2154 display.timerExec(V_SCROLL_RATE, timer); | |
| 2155 } else if (direction is DWT.DOWN) { | |
| 2156 timer = new class(disp) Runnable { | |
| 2157 Display display; | |
| 2158 this( Display d ){ this.display = d; } | |
| 2159 public void run() { | |
| 2160 if (autoScrollDirection is DWT.DOWN) { | |
| 2161 doSelectionPageDown(autoScrollDistance); | |
| 2162 display.timerExec(V_SCROLL_RATE, this); | |
| 2163 } | |
| 2164 } | |
| 2165 }; | |
| 2166 autoScrollDirection = direction; | |
| 2167 display.timerExec(V_SCROLL_RATE, timer); | |
| 2168 } else if (direction is ST.COLUMN_NEXT) { | |
| 2169 timer = new class(disp) Runnable { | |
| 2170 Display display; | |
| 2171 this( Display d ){ this.display = d; } | |
| 2172 public void run() { | |
| 2173 if (autoScrollDirection is ST.COLUMN_NEXT) { | |
| 2174 doVisualNext(); | |
| 2175 setMouseWordSelectionAnchor(); | |
| 2176 doMouseSelection(); | |
| 2177 display.timerExec(H_SCROLL_RATE, this); | |
| 2178 } | |
| 2179 } | |
| 2180 }; | |
| 2181 autoScrollDirection = direction; | |
| 2182 display.timerExec(H_SCROLL_RATE, timer); | |
| 2183 } else if (direction is ST.COLUMN_PREVIOUS) { | |
| 2184 timer = new class(disp) Runnable { | |
| 2185 Display display; | |
| 2186 this( Display d ){ this.display = d; } | |
| 2187 public void run() { | |
| 2188 if (autoScrollDirection is ST.COLUMN_PREVIOUS) { | |
| 2189 doVisualPrevious(); | |
| 2190 setMouseWordSelectionAnchor(); | |
| 2191 doMouseSelection(); | |
| 2192 display.timerExec(H_SCROLL_RATE, this); | |
| 2193 } | |
| 2194 } | |
| 2195 }; | |
| 2196 autoScrollDirection = direction; | |
| 2197 display.timerExec(H_SCROLL_RATE, timer); | |
| 2198 } | |
| 2199 } | |
| 2200 /** | |
| 2201 * Deletes the previous character. Delete the selected text if any. | |
| 2202 * Move the caret in front of the deleted text. | |
| 2203 */ | |
| 2204 void doBackspace() { | |
| 2205 Event event = new Event(); | |
| 2206 event.text = ""; | |
| 2207 if (selection.x !is selection.y) { | |
| 2208 event.start = selection.x; | |
| 2209 event.end = selection.y; | |
| 2210 sendKeyEvent(event); | |
| 2211 } else if (caretOffset > 0) { | |
| 2212 int lineIndex = content.getLineAtOffset(caretOffset); | |
| 2213 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 2214 if (caretOffset is lineOffset) { | |
| 2215 lineOffset = content.getOffsetAtLine(lineIndex - 1); | |
| 2216 event.start = lineOffset + content.getLine(lineIndex - 1).length; | |
| 2217 event.end = caretOffset; | |
| 2218 } else { | |
| 2219 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2220 int start = layout.getPreviousOffset(caretOffset - lineOffset, DWT.MOVEMENT_CHAR); | |
| 2221 renderer.disposeTextLayout(layout); | |
| 2222 event.start = start + lineOffset; | |
| 2223 event.end = caretOffset; | |
| 2224 } | |
| 2225 sendKeyEvent(event); | |
| 2226 } | |
| 2227 } | |
| 2228 /** | |
| 2229 * Replaces the selection with the character or insert the character at the | |
| 2230 * current caret position if no selection exists. | |
| 2231 * <p> | |
| 2232 * If a carriage return was typed replace it with the line break character | |
| 2233 * used by the widget on this platform. | |
| 2234 * </p> | |
| 2235 * | |
| 2236 * @param key the character typed by the user | |
| 2237 */ | |
| 2238 void doContent(char key) { | |
| 2239 if (textLimit > 0 && | |
| 2240 content.getCharCount() - (selection.y - selection.x) >= textLimit) { | |
| 2241 return; | |
| 2242 } | |
| 2243 Event event = new Event(); | |
| 2244 event.start = selection.x; | |
| 2245 event.end = selection.y; | |
| 2246 // replace a CR line break with the widget line break | |
| 2247 // CR does not make sense on Windows since most (all?) applications | |
| 2248 // don't recognize CR as a line break. | |
| 2249 if (key is DWT.CR || key is DWT.LF) { | |
| 2250 if (!isSingleLine()) { | |
| 2251 event.text = getLineDelimiter(); | |
| 2252 } | |
| 2253 } else if (selection.x is selection.y && overwrite && key !is TAB) { | |
| 2254 // no selection and overwrite mode is on and the typed key is not a | |
| 2255 // tab character (tabs are always inserted without overwriting)? | |
| 2256 int lineIndex = content.getLineAtOffset(event.end); | |
| 2257 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
|
2258 String line = content.getLine(lineIndex); |
| 155 | 2259 // replace character at caret offset if the caret is not at the |
| 2260 // end of the line | |
| 2261 if (event.end < lineOffset + line.length) { | |
| 2262 event.end++; | |
| 2263 } | |
| 2264 event.text = [key]; | |
| 2265 } else { | |
| 2266 event.text = [key]; | |
| 2267 } | |
| 2268 if (event.text !is null) { | |
| 2269 sendKeyEvent(event); | |
| 2270 } | |
| 2271 } | |
| 2272 /** | |
| 2273 * Moves the caret after the last character of the widget content. | |
| 2274 */ | |
| 2275 void doContentEnd() { | |
| 2276 // place caret at end of first line if receiver is in single | |
| 2277 // line mode. fixes 4820. | |
| 2278 if (isSingleLine()) { | |
| 2279 doLineEnd(); | |
| 2280 } else { | |
| 2281 int length = content.getCharCount(); | |
| 2282 if (caretOffset < length) { | |
| 2283 caretOffset = length; | |
| 2284 showCaret(); | |
| 2285 } | |
| 2286 } | |
| 2287 } | |
| 2288 /** | |
| 2289 * Moves the caret in front of the first character of the widget content. | |
| 2290 */ | |
| 2291 void doContentStart() { | |
| 2292 if (caretOffset > 0) { | |
| 2293 caretOffset = 0; | |
| 2294 showCaret(); | |
| 2295 } | |
| 2296 } | |
| 2297 /** | |
| 2298 * Moves the caret to the start of the selection if a selection exists. | |
| 2299 * Otherwise, if no selection exists move the cursor according to the | |
| 2300 * cursor selection rules. | |
| 2301 * | |
| 2302 * @see #doSelectionCursorPrevious | |
| 2303 */ | |
| 2304 void doCursorPrevious() { | |
| 2305 if (selection.y - selection.x > 0) { | |
| 2306 caretOffset = selection.x; | |
| 2307 caretAlignment = OFFSET_LEADING; | |
| 2308 showCaret(); | |
| 2309 } else { | |
| 2310 doSelectionCursorPrevious(); | |
| 2311 } | |
| 2312 } | |
| 2313 /** | |
| 2314 * Moves the caret to the end of the selection if a selection exists. | |
| 2315 * Otherwise, if no selection exists move the cursor according to the | |
| 2316 * cursor selection rules. | |
| 2317 * | |
| 2318 * @see #doSelectionCursorNext | |
| 2319 */ | |
| 2320 void doCursorNext() { | |
| 2321 if (selection.y - selection.x > 0) { | |
| 2322 caretOffset = selection.y; | |
| 2323 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 2324 showCaret(); | |
| 2325 } else { | |
| 2326 doSelectionCursorNext(); | |
| 2327 } | |
| 2328 } | |
| 2329 /** | |
| 2330 * Deletes the next character. Delete the selected text if any. | |
| 2331 */ | |
| 2332 void doDelete() { | |
| 2333 Event event = new Event(); | |
| 2334 event.text = ""; | |
| 2335 if (selection.x !is selection.y) { | |
| 2336 event.start = selection.x; | |
| 2337 event.end = selection.y; | |
| 2338 sendKeyEvent(event); | |
| 2339 } else if (caretOffset < content.getCharCount()) { | |
| 2340 int line = content.getLineAtOffset(caretOffset); | |
| 2341 int lineOffset = content.getOffsetAtLine(line); | |
| 2342 int lineLength = content.getLine(line).length; | |
| 2343 if (caretOffset is lineOffset + lineLength) { | |
| 2344 event.start = caretOffset; | |
| 2345 event.end = content.getOffsetAtLine(line + 1); | |
| 2346 } else { | |
| 2347 event.start = caretOffset; | |
| 2348 event.end = getClusterNext(caretOffset, line); | |
| 2349 } | |
| 2350 sendKeyEvent(event); | |
| 2351 } | |
| 2352 } | |
| 2353 /** | |
| 2354 * Deletes the next word. | |
| 2355 */ | |
| 2356 void doDeleteWordNext() { | |
| 2357 if (selection.x !is selection.y) { | |
| 2358 // if a selection exists, treat the as if | |
| 2359 // only the delete key was pressed | |
| 2360 doDelete(); | |
| 2361 } else { | |
| 2362 Event event = new Event(); | |
| 2363 event.text = ""; | |
| 2364 event.start = caretOffset; | |
| 2365 event.end = getWordNext(caretOffset, DWT.MOVEMENT_WORD); | |
| 2366 sendKeyEvent(event); | |
| 2367 } | |
| 2368 } | |
| 2369 /** | |
| 2370 * Deletes the previous word. | |
| 2371 */ | |
| 2372 void doDeleteWordPrevious() { | |
| 2373 if (selection.x !is selection.y) { | |
| 2374 // if a selection exists, treat as if | |
| 2375 // only the backspace key was pressed | |
| 2376 doBackspace(); | |
| 2377 } else { | |
| 2378 Event event = new Event(); | |
| 2379 event.text = ""; | |
| 2380 event.start = getWordPrevious(caretOffset, DWT.MOVEMENT_WORD); | |
| 2381 event.end = caretOffset; | |
| 2382 sendKeyEvent(event); | |
| 2383 } | |
| 2384 } | |
| 2385 /** | |
| 2386 * Moves the caret one line down and to the same character offset relative | |
| 2387 * to the beginning of the line. Move the caret to the end of the new line | |
| 2388 * if the new line is shorter than the character offset. | |
| 2389 */ | |
| 2390 void doLineDown(bool select) { | |
| 2391 int caretLine = getCaretLine(); | |
| 2392 int lineCount = content.getLineCount(); | |
| 2393 int y = 0; | |
| 2394 bool lastLine = false; | |
| 2395 if (wordWrap) { | |
| 2396 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2397 int offsetInLine = caretOffset - lineOffset; | |
| 2398 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2399 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2400 int layoutLineCount = layout.getLineCount(); | |
| 2401 if (lineIndex is layoutLineCount - 1) { | |
| 2402 lastLine = caretLine is lineCount - 1; | |
| 2403 caretLine++; | |
| 2404 } else { | |
| 2405 y = layout.getLineBounds(lineIndex + 1).y; | |
| 2406 } | |
| 2407 renderer.disposeTextLayout(layout); | |
| 2408 } else { | |
| 2409 lastLine = caretLine is lineCount - 1; | |
| 2410 caretLine++; | |
| 2411 } | |
| 2412 if (lastLine) { | |
| 2413 if (select) caretOffset = content.getCharCount(); | |
| 2414 } else { | |
| 2415 caretOffset = getOffsetAtPoint(columnX, y, caretLine); | |
| 2416 } | |
| 2417 int oldColumnX = columnX; | |
| 2418 int oldHScrollOffset = horizontalScrollOffset; | |
| 2419 if (select) { | |
| 2420 setMouseWordSelectionAnchor(); | |
| 2421 // select first and then scroll to reduce flash when key | |
| 2422 // repeat scrolls lots of lines | |
| 2423 doSelection(ST.COLUMN_NEXT); | |
| 2424 } | |
| 2425 showCaret(); | |
| 2426 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2427 columnX = oldColumnX + hScrollChange; | |
| 2428 } | |
| 2429 /** | |
| 2430 * Moves the caret to the end of the line. | |
| 2431 */ | |
| 2432 void doLineEnd() { | |
| 2433 int caretLine = getCaretLine(); | |
| 2434 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2435 int lineEndOffset; | |
| 2436 if (wordWrap) { | |
| 2437 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2438 int offsetInLine = caretOffset - lineOffset; | |
| 2439 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2440 int[] offsets = layout.getLineOffsets(); | |
| 2441 lineEndOffset = lineOffset + offsets[lineIndex + 1]; | |
| 2442 renderer.disposeTextLayout(layout); | |
| 2443 } else { | |
| 2444 int lineLength = content.getLine(caretLine).length; | |
| 2445 lineEndOffset = lineOffset + lineLength; | |
| 2446 } | |
| 2447 if (caretOffset < lineEndOffset) { | |
| 2448 caretOffset = lineEndOffset; | |
| 2449 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 2450 showCaret(); | |
| 2451 } | |
| 2452 } | |
| 2453 /** | |
| 2454 * Moves the caret to the beginning of the line. | |
| 2455 */ | |
| 2456 void doLineStart() { | |
| 2457 int caretLine = getCaretLine(); | |
| 2458 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2459 if (wordWrap) { | |
| 2460 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2461 int offsetInLine = caretOffset - lineOffset; | |
| 2462 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2463 int[] offsets = layout.getLineOffsets(); | |
| 2464 lineOffset += offsets[lineIndex]; | |
| 2465 renderer.disposeTextLayout(layout); | |
| 2466 } | |
| 2467 if (caretOffset > lineOffset) { | |
| 2468 caretOffset = lineOffset; | |
| 2469 caretAlignment = OFFSET_LEADING; | |
| 2470 showCaret(); | |
| 2471 } | |
| 2472 } | |
| 2473 /** | |
| 2474 * Moves the caret one line up and to the same character offset relative | |
| 2475 * to the beginning of the line. Move the caret to the end of the new line | |
| 2476 * if the new line is shorter than the character offset. | |
| 2477 */ | |
| 2478 void doLineUp(bool select) { | |
| 2479 int caretLine = getCaretLine(), y = 0; | |
| 2480 bool firstLine = false; | |
| 2481 if (wordWrap) { | |
| 2482 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2483 int offsetInLine = caretOffset - lineOffset; | |
| 2484 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2485 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2486 if (lineIndex is 0) { | |
| 2487 firstLine = caretLine is 0; | |
| 2488 if (!firstLine) { | |
| 2489 caretLine--; | |
| 2490 y = renderer.getLineHeight(caretLine) - 1; | |
| 2491 } | |
| 2492 } else { | |
| 2493 y = layout.getLineBounds(lineIndex - 1).y; | |
| 2494 } | |
| 2495 renderer.disposeTextLayout(layout); | |
| 2496 } else { | |
| 2497 firstLine = caretLine is 0; | |
| 2498 caretLine--; | |
| 2499 } | |
| 2500 if (firstLine) { | |
| 2501 if (select) caretOffset = 0; | |
| 2502 } else { | |
| 2503 caretOffset = getOffsetAtPoint(columnX, y, caretLine); | |
| 2504 } | |
| 2505 int oldColumnX = columnX; | |
| 2506 int oldHScrollOffset = horizontalScrollOffset; | |
| 2507 if (select) setMouseWordSelectionAnchor(); | |
| 2508 showCaret(); | |
| 2509 if (select) doSelection(ST.COLUMN_PREVIOUS); | |
| 2510 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2511 columnX = oldColumnX + hScrollChange; | |
| 2512 } | |
| 2513 /** | |
| 2514 * Moves the caret to the specified location. | |
| 2515 * | |
| 2516 * @param x x location of the new caret position | |
| 2517 * @param y y location of the new caret position | |
| 2518 * @param select the location change is a selection operation. | |
| 2519 * include the line delimiter in the selection | |
| 2520 */ | |
| 2521 void doMouseLocationChange(int x, int y, bool select) { | |
| 2522 int line = getLineIndex(y); | |
| 2523 | |
| 2524 updateCaretDirection = true; | |
| 2525 // allow caret to be placed below first line only if receiver is | |
| 2526 // not in single line mode. fixes 4820. | |
| 2527 if (line < 0 || (isSingleLine() && line > 0)) { | |
| 2528 return; | |
| 2529 } | |
| 2530 int oldCaretAlignment = caretAlignment; | |
| 2531 int newCaretOffset = getOffsetAtPoint(x, y); | |
| 2532 | |
| 2533 if (clickCount > 1) { | |
| 2534 // double click word select the previous/next word. fixes bug 15610 | |
| 2535 newCaretOffset = doMouseWordSelect(x, newCaretOffset, line); | |
| 2536 } | |
| 2537 | |
| 2538 int newCaretLine = content.getLineAtOffset(newCaretOffset); | |
| 2539 | |
| 2540 // Is the mouse within the left client area border or on | |
| 2541 // a different line? If not the autoscroll selection | |
| 2542 // could be incorrectly reset. Fixes 1GKM3XS | |
| 2543 if (0 <= y && y < clientAreaHeight && | |
| 2544 (0 <= x && x < clientAreaWidth || wordWrap || | |
| 2545 newCaretLine !is content.getLineAtOffset(caretOffset))) { | |
| 2546 if (newCaretOffset !is caretOffset || caretAlignment !is oldCaretAlignment) { | |
| 2547 caretOffset = newCaretOffset; | |
| 2548 if (select) doMouseSelection(); | |
| 2549 showCaret(); | |
| 2550 } | |
| 2551 } | |
| 2552 if (!select) { | |
| 2553 caretOffset = newCaretOffset; | |
| 2554 clearSelection(true); | |
| 2555 } | |
| 2556 } | |
| 2557 /** | |
| 2558 * Updates the selection based on the caret position | |
| 2559 */ | |
| 2560 void doMouseSelection() { | |
| 2561 if (caretOffset <= selection.x || | |
| 2562 (caretOffset > selection.x && | |
| 2563 caretOffset < selection.y && selectionAnchor is selection.x)) { | |
| 2564 doSelection(ST.COLUMN_PREVIOUS); | |
| 2565 } else { | |
| 2566 doSelection(ST.COLUMN_NEXT); | |
| 2567 } | |
| 2568 } | |
| 2569 /** | |
| 2570 * Returns the offset of the word at the specified offset. | |
| 2571 * If the current selection : from high index to low index | |
| 2572 * (i.e., right to left, or caret is at left border of selection on | |
| 2573 * non-bidi platforms) the start offset of the word preceding the | |
| 2574 * selection is returned. If the current selection : from | |
| 2575 * low index to high index the end offset of the word following | |
| 2576 * the selection is returned. | |
| 2577 * | |
| 2578 * @param x mouse x location | |
| 2579 * @param newCaretOffset caret offset of the mouse cursor location | |
| 2580 * @param line line index of the mouse cursor location | |
| 2581 */ | |
| 2582 int doMouseWordSelect(int x, int newCaretOffset, int line) { | |
| 2583 // flip selection anchor based on word selection direction from | |
| 2584 // base double click. Always do this here (and don't rely on doAutoScroll) | |
| 2585 // because auto scroll only does not cover all possible mouse selections | |
| 2586 // (e.g., mouse x < 0 && mouse y > caret line y) | |
| 2587 if (newCaretOffset < selectionAnchor && selectionAnchor is selection.x) { | |
| 2588 selectionAnchor = doubleClickSelection.y; | |
| 2589 } else if (newCaretOffset > selectionAnchor && selectionAnchor is selection.y) { | |
| 2590 selectionAnchor = doubleClickSelection.x; | |
| 2591 } | |
| 2592 if (0 <= x && x < clientAreaWidth) { | |
| 2593 bool wordSelect = (clickCount & 1) is 0; | |
| 2594 if (caretOffset is selection.x) { | |
| 2595 if (wordSelect) { | |
| 2596 newCaretOffset = getWordPrevious(newCaretOffset, DWT.MOVEMENT_WORD_START); | |
| 2597 } else { | |
| 2598 newCaretOffset = content.getOffsetAtLine(line); | |
| 2599 } | |
| 2600 } else { | |
| 2601 if (wordSelect) { | |
| 2602 newCaretOffset = getWordNext(newCaretOffset, DWT.MOVEMENT_WORD_END); | |
| 2603 } else { | |
| 2604 int lineEnd = content.getCharCount(); | |
| 2605 if (line + 1 < content.getLineCount()) { | |
| 2606 lineEnd = content.getOffsetAtLine(line + 1); | |
| 2607 } | |
| 2608 newCaretOffset = lineEnd; | |
| 2609 } | |
| 2610 } | |
| 2611 } | |
| 2612 return newCaretOffset; | |
| 2613 } | |
| 2614 /** | |
| 2615 * Scrolls one page down so that the last line (truncated or whole) | |
| 2616 * of the current page becomes the fully visible top line. | |
| 2617 * <p> | |
| 2618 * The caret is scrolled the same number of lines so that its location | |
| 2619 * relative to the top line remains the same. The exception is the end | |
| 2620 * of the text where a full page scroll is not possible. In this case | |
| 2621 * the caret is moved after the last character. | |
| 2622 * </p> | |
| 2623 * | |
| 2624 * @param select whether or not to select the page | |
| 2625 */ | |
| 2626 void doPageDown(bool select, int height) { | |
| 2627 if (isSingleLine()) return; | |
| 2628 int oldColumnX = columnX; | |
| 2629 int oldHScrollOffset = horizontalScrollOffset; | |
| 2630 if (isFixedLineHeight()) { | |
| 2631 int lineCount = content.getLineCount(); | |
| 2632 int caretLine = getCaretLine(); | |
| 2633 if (caretLine < lineCount - 1) { | |
| 2634 int lineHeight = renderer.getLineHeight(); | |
| 2635 int lines = (height is -1 ? clientAreaHeight : height) / lineHeight; | |
| 2636 int scrollLines = Math.min(lineCount - caretLine - 1, lines); | |
| 2637 // ensure that scrollLines never gets negative and at least one | |
| 2638 // line is scrolled. fixes bug 5602. | |
| 2639 scrollLines = Math.max(1, scrollLines); | |
| 2640 caretOffset = getOffsetAtPoint(columnX, getLinePixel(caretLine + scrollLines)); | |
| 2641 if (select) { | |
| 2642 doSelection(ST.COLUMN_NEXT); | |
| 2643 } | |
| 2644 // scroll one page down or to the bottom | |
| 2645 int verticalMaximum = lineCount * getVerticalIncrement(); | |
| 2646 int pageSize = clientAreaHeight; | |
| 2647 int verticalScrollOffset = getVerticalScrollOffset(); | |
| 2648 int scrollOffset = verticalScrollOffset + scrollLines * getVerticalIncrement(); | |
| 2649 if (scrollOffset + pageSize > verticalMaximum) { | |
| 2650 scrollOffset = verticalMaximum - pageSize; | |
| 2651 } | |
| 2652 if (scrollOffset > verticalScrollOffset) { | |
| 2653 scrollVertical(scrollOffset - verticalScrollOffset, true); | |
| 2654 } | |
| 2655 } | |
| 2656 } else { | |
| 2657 int lineCount = content.getLineCount(); | |
| 2658 int caretLine = getCaretLine(); | |
| 2659 int lineIndex, lineHeight; | |
| 2660 if (height is -1) { | |
| 2661 lineIndex = getPartialBottomIndex(); | |
| 2662 int topY = getLinePixel(lineIndex); | |
| 2663 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2664 height = topY; | |
| 2665 if (topY + lineHeight <= clientAreaHeight) { | |
| 2666 height += lineHeight; | |
| 2667 } else { | |
| 2668 if (wordWrap) { | |
| 2669 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2670 int y = clientAreaHeight - topY; | |
| 2671 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2672 Rectangle bounds = layout.getLineBounds(i); | |
| 2673 if (bounds.contains(bounds.x, y)) { | |
| 2674 height += bounds.y; | |
| 2675 break; | |
| 2676 } | |
| 2677 } | |
| 2678 renderer.disposeTextLayout(layout); | |
| 2679 } | |
| 2680 } | |
| 2681 } else { | |
| 2682 lineIndex = getLineIndex(height); | |
| 2683 int topLineY = getLinePixel(lineIndex); | |
| 2684 if (wordWrap) { | |
| 2685 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2686 int y = height - topLineY; | |
| 2687 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2688 Rectangle bounds = layout.getLineBounds(i); | |
| 2689 if (bounds.contains(bounds.x, y)) { | |
| 2690 height = topLineY + bounds.y + bounds.height; | |
| 2691 break; | |
| 2692 } | |
| 2693 } | |
| 2694 renderer.disposeTextLayout(layout); | |
| 2695 } else { | |
| 2696 height = topLineY + renderer.getLineHeight(lineIndex); | |
| 2697 } | |
| 2698 } | |
| 2699 int caretHeight = height; | |
| 2700 if (wordWrap) { | |
| 2701 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2702 int offsetInLine = caretOffset - content.getOffsetAtLine(caretLine); | |
| 2703 lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2704 caretHeight += layout.getLineBounds(lineIndex).y; | |
| 2705 renderer.disposeTextLayout(layout); | |
| 2706 } | |
| 2707 lineIndex = caretLine; | |
| 2708 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2709 while (caretHeight - lineHeight >= 0 && lineIndex < lineCount - 1) { | |
| 2710 caretHeight -= lineHeight; | |
| 2711 lineHeight = renderer.getLineHeight(++lineIndex); | |
| 2712 } | |
| 2713 caretOffset = getOffsetAtPoint(columnX, caretHeight, lineIndex); | |
| 2714 if (select) doSelection(ST.COLUMN_NEXT); | |
| 2715 height = getAvailableHeightBellow(height); | |
| 2716 scrollVertical(height, true); | |
| 2717 if (height is 0) setCaretLocation(); | |
| 2718 } | |
| 2719 showCaret(); | |
| 2720 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2721 columnX = oldColumnX + hScrollChange; | |
| 2722 } | |
| 2723 /** | |
| 2724 * Moves the cursor to the end of the last fully visible line. | |
| 2725 */ | |
| 2726 void doPageEnd() { | |
| 2727 // go to end of line if in single line mode. fixes 5673 | |
| 2728 if (isSingleLine()) { | |
| 2729 doLineEnd(); | |
| 2730 } else { | |
| 2731 int bottomOffset; | |
| 2732 if (wordWrap) { | |
| 2733 int lineIndex = getPartialBottomIndex(); | |
| 2734 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2735 int y = (clientAreaHeight - bottomMargin) - getLinePixel(lineIndex); | |
| 2736 int index = layout.getLineCount() - 1; | |
| 2737 while (index >= 0) { | |
| 2738 Rectangle bounds = layout.getLineBounds(index); | |
| 2739 if (y >= bounds.y + bounds.height) break; | |
| 2740 index--; | |
| 2741 } | |
| 2742 if (index is -1 && lineIndex > 0) { | |
| 2743 bottomOffset = content.getOffsetAtLine(lineIndex - 1) + content.getLine(lineIndex - 1).length; | |
| 2744 } else { | |
| 2745 bottomOffset = content.getOffsetAtLine(lineIndex) + Math.max(0, layout.getLineOffsets()[index + 1] - 1); | |
| 2746 } | |
| 2747 renderer.disposeTextLayout(layout); | |
| 2748 } else { | |
| 2749 int lineIndex = getBottomIndex(); | |
| 2750 bottomOffset = content.getOffsetAtLine(lineIndex) + content.getLine(lineIndex).length; | |
| 2751 } | |
| 2752 if (caretOffset < bottomOffset) { | |
| 2753 caretOffset = bottomOffset; | |
| 2754 caretAlignment = OFFSET_LEADING; | |
| 2755 showCaret(); | |
| 2756 } | |
| 2757 } | |
| 2758 } | |
| 2759 /** | |
| 2760 * Moves the cursor to the beginning of the first fully visible line. | |
| 2761 */ | |
| 2762 void doPageStart() { | |
| 2763 int topOffset; | |
| 2764 if (wordWrap) { | |
| 2765 int y, lineIndex; | |
| 2766 if (topIndexY > 0) { | |
| 2767 lineIndex = topIndex - 1; | |
| 2768 y = renderer.getLineHeight(lineIndex) - topIndexY; | |
| 2769 } else { | |
| 2770 lineIndex = topIndex; | |
| 2771 y = -topIndexY; | |
| 2772 } | |
| 2773 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2774 int index = 0; | |
| 2775 int lineCount = layout.getLineCount(); | |
| 2776 while (index < lineCount) { | |
| 2777 Rectangle bounds = layout.getLineBounds(index); | |
| 2778 if (y <= bounds.y) break; | |
| 2779 index++; | |
| 2780 } | |
| 2781 if (index is lineCount) { | |
| 2782 topOffset = content.getOffsetAtLine(lineIndex + 1); | |
| 2783 } else { | |
| 2784 topOffset = content.getOffsetAtLine(lineIndex) + layout.getLineOffsets()[index]; | |
| 2785 } | |
| 2786 renderer.disposeTextLayout(layout); | |
| 2787 } else { | |
| 2788 topOffset = content.getOffsetAtLine(topIndex); | |
| 2789 } | |
| 2790 if (caretOffset > topOffset) { | |
| 2791 caretOffset = topOffset; | |
| 2792 caretAlignment = OFFSET_LEADING; | |
| 2793 showCaret(); | |
| 2794 } | |
| 2795 } | |
| 2796 /** | |
| 2797 * Scrolls one page up so that the first line (truncated or whole) | |
| 2798 * of the current page becomes the fully visible last line. | |
| 2799 * The caret is scrolled the same number of lines so that its location | |
| 2800 * relative to the top line remains the same. The exception is the beginning | |
| 2801 * of the text where a full page scroll is not possible. In this case the | |
| 2802 * caret is moved in front of the first character. | |
| 2803 */ | |
| 2804 void doPageUp(bool select, int height) { | |
| 2805 if (isSingleLine()) return; | |
| 2806 int oldHScrollOffset = horizontalScrollOffset; | |
| 2807 int oldColumnX = columnX; | |
| 2808 if (isFixedLineHeight()) { | |
| 2809 int caretLine = getCaretLine(); | |
| 2810 if (caretLine > 0) { | |
| 2811 int lineHeight = renderer.getLineHeight(); | |
| 2812 int lines = (height is -1 ? clientAreaHeight : height) / lineHeight; | |
| 2813 int scrollLines = Math.max(1, Math.min(caretLine, lines)); | |
| 2814 caretLine -= scrollLines; | |
| 2815 caretOffset = getOffsetAtPoint(columnX, getLinePixel(caretLine)); | |
| 2816 if (select) { | |
| 2817 doSelection(ST.COLUMN_PREVIOUS); | |
| 2818 } | |
| 2819 int verticalScrollOffset = getVerticalScrollOffset(); | |
| 2820 int scrollOffset = Math.max(0, verticalScrollOffset - scrollLines * getVerticalIncrement()); | |
| 2821 if (scrollOffset < verticalScrollOffset) { | |
| 2822 scrollVertical(scrollOffset - verticalScrollOffset, true); | |
| 2823 } | |
| 2824 } | |
| 2825 } else { | |
| 2826 int caretLine = getCaretLine(); | |
| 2827 int lineHeight, lineIndex; | |
| 2828 if (height is -1) { | |
| 2829 if (topIndexY is 0) { | |
| 2830 height = clientAreaHeight; | |
| 2831 } else { | |
| 2832 int y; | |
| 2833 if (topIndex > 0) { | |
| 2834 lineIndex = topIndex - 1; | |
| 2835 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2836 height = clientAreaHeight - topIndexY; | |
| 2837 y = lineHeight - topIndexY; | |
| 2838 } else { | |
| 2839 lineIndex = topIndex; | |
| 2840 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2841 height = clientAreaHeight - (lineHeight + topIndexY); | |
| 2842 y = -topIndexY; | |
| 2843 } | |
| 2844 if (wordWrap) { | |
| 2845 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2846 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2847 Rectangle bounds = layout.getLineBounds(i); | |
| 2848 if (bounds.contains(bounds.x, y)) { | |
| 2849 height += lineHeight - (bounds.y + bounds.height); | |
| 2850 break; | |
| 2851 } | |
| 2852 } | |
| 2853 renderer.disposeTextLayout(layout); | |
| 2854 } | |
| 2855 } | |
| 2856 } else { | |
| 2857 lineIndex = getLineIndex(clientAreaHeight - height); | |
| 2858 int topLineY = getLinePixel(lineIndex); | |
| 2859 if (wordWrap) { | |
| 2860 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2861 int y = topLineY; | |
| 2862 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2863 Rectangle bounds = layout.getLineBounds(i); | |
| 2864 if (bounds.contains(bounds.x, y)) { | |
| 2865 height = clientAreaHeight - (topLineY + bounds.y); | |
| 2866 break; | |
| 2867 } | |
| 2868 } | |
| 2869 renderer.disposeTextLayout(layout); | |
| 2870 } else { | |
| 2871 height = clientAreaHeight - topLineY; | |
| 2872 } | |
| 2873 } | |
| 2874 int caretHeight = height; | |
| 2875 if (wordWrap) { | |
| 2876 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2877 int offsetInLine = caretOffset - content.getOffsetAtLine(caretLine); | |
| 2878 lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2879 caretHeight += layout.getBounds().height - layout.getLineBounds(lineIndex).y; | |
| 2880 renderer.disposeTextLayout(layout); | |
| 2881 } | |
| 2882 lineIndex = caretLine; | |
| 2883 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2884 while (caretHeight - lineHeight >= 0 && lineIndex > 0) { | |
| 2885 caretHeight -= lineHeight; | |
| 2886 lineHeight = renderer.getLineHeight(--lineIndex); | |
| 2887 } | |
| 2888 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2889 caretOffset = getOffsetAtPoint(columnX, lineHeight - caretHeight, lineIndex); | |
| 2890 if (select) doSelection(ST.COLUMN_PREVIOUS); | |
| 2891 height = getAvailableHeightAbove(height); | |
| 2892 scrollVertical(-height, true); | |
| 2893 if (height is 0) setCaretLocation(); | |
| 2894 } | |
| 2895 showCaret(); | |
| 2896 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2897 columnX = oldColumnX + hScrollChange; | |
| 2898 } | |
| 2899 /** | |
| 2900 * Updates the selection to extend to the current caret position. | |
| 2901 */ | |
| 2902 void doSelection(int direction) { | |
| 2903 int redrawStart = -1; | |
| 2904 int redrawEnd = -1; | |
| 2905 if (selectionAnchor is -1) { | |
| 2906 selectionAnchor = selection.x; | |
| 2907 } | |
| 2908 if (direction is ST.COLUMN_PREVIOUS) { | |
| 2909 if (caretOffset < selection.x) { | |
| 2910 // grow selection | |
| 2911 redrawEnd = selection.x; | |
| 2912 redrawStart = selection.x = caretOffset; | |
| 2913 // check if selection has reversed direction | |
| 2914 if (selection.y !is selectionAnchor) { | |
| 2915 redrawEnd = selection.y; | |
| 2916 selection.y = selectionAnchor; | |
| 2917 } | |
| 2918 // test whether selection actually changed. Fixes 1G71EO1 | |
| 2919 } else if (selectionAnchor is selection.x && caretOffset < selection.y) { | |
| 2920 // caret moved towards selection anchor (left side of selection). | |
| 2921 // shrink selection | |
| 2922 redrawEnd = selection.y; | |
| 2923 redrawStart = selection.y = caretOffset; | |
| 2924 } | |
| 2925 } else { | |
| 2926 if (caretOffset > selection.y) { | |
| 2927 // grow selection | |
| 2928 redrawStart = selection.y; | |
| 2929 redrawEnd = selection.y = caretOffset; | |
| 2930 // check if selection has reversed direction | |
| 2931 if (selection.x !is selectionAnchor) { | |
| 2932 redrawStart = selection.x; | |
| 2933 selection.x = selectionAnchor; | |
| 2934 } | |
| 2935 // test whether selection actually changed. Fixes 1G71EO1 | |
| 2936 } else if (selectionAnchor is selection.y && caretOffset > selection.x) { | |
| 2937 // caret moved towards selection anchor (right side of selection). | |
| 2938 // shrink selection | |
| 2939 redrawStart = selection.x; | |
| 2940 redrawEnd = selection.x = caretOffset; | |
| 2941 } | |
| 2942 } | |
| 2943 if (redrawStart !is -1 && redrawEnd !is -1) { | |
| 2944 internalRedrawRange(redrawStart, redrawEnd - redrawStart); | |
| 2945 sendSelectionEvent(); | |
| 2946 } | |
| 2947 } | |
| 2948 /** | |
| 2949 * Moves the caret to the next character or to the beginning of the | |
| 2950 * next line if the cursor is at the end of a line. | |
| 2951 */ | |
| 2952 void doSelectionCursorNext() { | |
| 2953 int caretLine = getCaretLine(); | |
| 2954 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2955 int offsetInLine = caretOffset - lineOffset; | |
| 2956 if (offsetInLine < content.getLine(caretLine).length) { | |
| 2957 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2958 offsetInLine = layout.getNextOffset(offsetInLine, DWT.MOVEMENT_CLUSTER); | |
| 2959 int lineStart = layout.getLineOffsets()[layout.getLineIndex(offsetInLine)]; | |
| 2960 renderer.disposeTextLayout(layout); | |
| 2961 caretOffset = offsetInLine + lineOffset; | |
| 2962 caretAlignment = offsetInLine is lineStart ? OFFSET_LEADING : PREVIOUS_OFFSET_TRAILING; | |
| 2963 showCaret(); | |
| 2964 } else if (caretLine < content.getLineCount() - 1 && !isSingleLine()) { | |
| 2965 caretLine++; | |
| 2966 caretOffset = content.getOffsetAtLine(caretLine); | |
| 2967 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 2968 showCaret(); | |
| 2969 } | |
| 2970 } | |
| 2971 /** | |
| 2972 * Moves the caret to the previous character or to the end of the previous | |
| 2973 * line if the cursor is at the beginning of a line. | |
| 2974 */ | |
| 2975 void doSelectionCursorPrevious() { | |
| 2976 int caretLine = getCaretLine(); | |
| 2977 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2978 int offsetInLine = caretOffset - lineOffset; | |
| 2979 caretAlignment = OFFSET_LEADING; | |
| 2980 if (offsetInLine > 0) { | |
| 2981 caretOffset = getClusterPrevious(caretOffset, caretLine); | |
| 2982 showCaret(); | |
| 2983 } else if (caretLine > 0) { | |
| 2984 caretLine--; | |
| 2985 lineOffset = content.getOffsetAtLine(caretLine); | |
| 2986 caretOffset = lineOffset + content.getLine(caretLine).length; | |
| 2987 showCaret(); | |
| 2988 } | |
| 2989 } | |
| 2990 /** | |
| 2991 * Moves the caret one line down and to the same character offset relative | |
| 2992 * to the beginning of the line. Moves the caret to the end of the new line | |
| 2993 * if the new line is shorter than the character offset. | |
| 2994 * Moves the caret to the end of the text if the caret already is on the | |
| 2995 * last line. | |
| 2996 * Adjusts the selection according to the caret change. This can either add | |
| 2997 * to or subtract from the old selection, depending on the previous selection | |
| 2998 * direction. | |
| 2999 */ | |
| 3000 void doSelectionLineDown() { | |
| 3001 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3002 doLineDown(true); | |
| 3003 columnX = oldColumnX; | |
| 3004 } | |
| 3005 /** | |
| 3006 * Moves the caret one line up and to the same character offset relative | |
| 3007 * to the beginning of the line. Moves the caret to the end of the new line | |
| 3008 * if the new line is shorter than the character offset. | |
| 3009 * Moves the caret to the beginning of the document if it is already on the | |
| 3010 * first line. | |
| 3011 * Adjusts the selection according to the caret change. This can either add | |
| 3012 * to or subtract from the old selection, depending on the previous selection | |
| 3013 * direction. | |
| 3014 */ | |
| 3015 void doSelectionLineUp() { | |
| 3016 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3017 doLineUp(true); | |
| 3018 columnX = oldColumnX; | |
| 3019 } | |
| 3020 /** | |
| 3021 * Scrolls one page down so that the last line (truncated or whole) | |
| 3022 * of the current page becomes the fully visible top line. | |
| 3023 * <p> | |
| 3024 * The caret is scrolled the same number of lines so that its location | |
| 3025 * relative to the top line remains the same. The exception is the end | |
| 3026 * of the text where a full page scroll is not possible. In this case | |
| 3027 * the caret is moved after the last character. | |
| 3028 * <p></p> | |
| 3029 * Adjusts the selection according to the caret change. This can either add | |
| 3030 * to or subtract from the old selection, depending on the previous selection | |
| 3031 * direction. | |
| 3032 * </p> | |
| 3033 */ | |
| 3034 void doSelectionPageDown(int pixels) { | |
| 3035 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3036 doPageDown(true, pixels); | |
| 3037 columnX = oldColumnX; | |
| 3038 } | |
| 3039 /** | |
| 3040 * Scrolls one page up so that the first line (truncated or whole) | |
| 3041 * of the current page becomes the fully visible last line. | |
| 3042 * <p> | |
| 3043 * The caret is scrolled the same number of lines so that its location | |
| 3044 * relative to the top line remains the same. The exception is the beginning | |
| 3045 * of the text where a full page scroll is not possible. In this case the | |
| 3046 * caret is moved in front of the first character. | |
| 3047 * </p><p> | |
| 3048 * Adjusts the selection according to the caret change. This can either add | |
| 3049 * to or subtract from the old selection, depending on the previous selection | |
| 3050 * direction. | |
| 3051 * </p> | |
| 3052 */ | |
| 3053 void doSelectionPageUp(int pixels) { | |
| 3054 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3055 doPageUp(true, pixels); | |
| 3056 columnX = oldColumnX; | |
| 3057 } | |
| 3058 /** | |
| 3059 * Moves the caret to the end of the next word . | |
| 3060 */ | |
| 3061 void doSelectionWordNext() { | |
| 3062 int newCaretOffset = getWordNext(caretOffset, DWT.MOVEMENT_WORD); | |
| 3063 // Force symmetrical movement for word next and previous. Fixes 14536 | |
| 3064 caretAlignment = OFFSET_LEADING; | |
| 3065 // don't change caret position if in single line mode and the cursor | |
| 3066 // would be on a different line. fixes 5673 | |
| 3067 if (!isSingleLine() || | |
| 3068 content.getLineAtOffset(caretOffset) is content.getLineAtOffset(newCaretOffset)) { | |
| 3069 caretOffset = newCaretOffset; | |
| 3070 showCaret(); | |
| 3071 } | |
| 3072 } | |
| 3073 /** | |
| 3074 * Moves the caret to the start of the previous word. | |
| 3075 */ | |
| 3076 void doSelectionWordPrevious() { | |
| 3077 caretAlignment = OFFSET_LEADING; | |
| 3078 caretOffset = getWordPrevious(caretOffset, DWT.MOVEMENT_WORD); | |
| 3079 int caretLine = content.getLineAtOffset(caretOffset); | |
| 3080 // word previous always comes from bottom line. when | |
| 3081 // wrapping lines, stay on bottom line when on line boundary | |
| 3082 if (wordWrap && caretLine < content.getLineCount() - 1 && | |
| 3083 caretOffset is content.getOffsetAtLine(caretLine + 1)) { | |
| 3084 caretLine++; | |
| 3085 } | |
| 3086 showCaret(); | |
| 3087 } | |
| 3088 /** | |
| 3089 * Moves the caret one character to the left. Do not go to the previous line. | |
| 3090 * When in a bidi locale and at a R2L character the caret is moved to the | |
| 3091 * beginning of the R2L segment (visually right) and then one character to the | |
| 3092 * left (visually left because it's now in a L2R segment). | |
| 3093 */ | |
| 3094 void doVisualPrevious() { | |
| 3095 caretOffset = getClusterPrevious(caretOffset, getCaretLine()); | |
| 3096 showCaret(); | |
| 3097 } | |
| 3098 /** | |
| 3099 * Moves the caret one character to the right. Do not go to the next line. | |
| 3100 * When in a bidi locale and at a R2L character the caret is moved to the | |
| 3101 * end of the R2L segment (visually left) and then one character to the | |
| 3102 * right (visually right because it's now in a L2R segment). | |
| 3103 */ | |
| 3104 void doVisualNext() { | |
| 3105 caretOffset = getClusterNext(caretOffset, getCaretLine()); | |
| 3106 showCaret(); | |
| 3107 } | |
| 3108 /** | |
| 3109 * Moves the caret to the end of the next word. | |
| 3110 * If a selection exists, move the caret to the end of the selection | |
| 3111 * and remove the selection. | |
| 3112 */ | |
| 3113 void doWordNext() { | |
| 3114 if (selection.y - selection.x > 0) { | |
| 3115 caretOffset = selection.y; | |
| 3116 showCaret(); | |
| 3117 } else { | |
| 3118 doSelectionWordNext(); | |
| 3119 } | |
| 3120 } | |
| 3121 /** | |
| 3122 * Moves the caret to the start of the previous word. | |
| 3123 * If a selection exists, move the caret to the start of the selection | |
| 3124 * and remove the selection. | |
| 3125 */ | |
| 3126 void doWordPrevious() { | |
| 3127 if (selection.y - selection.x > 0) { | |
| 3128 caretOffset = selection.x; | |
| 3129 showCaret(); | |
| 3130 } else { | |
| 3131 doSelectionWordPrevious(); | |
| 3132 } | |
| 3133 } | |
| 3134 /** | |
| 3135 * Ends the autoscroll process. | |
| 3136 */ | |
| 3137 void endAutoScroll() { | |
| 3138 autoScrollDirection = DWT.NULL; | |
| 3139 } | |
| 3140 public override Color getBackground() { | |
| 3141 checkWidget(); | |
| 3142 if (background is null) { | |
| 3143 return getDisplay().getSystemColor(DWT.COLOR_LIST_BACKGROUND); | |
| 3144 } | |
| 3145 return background; | |
| 3146 } | |
| 3147 /** | |
| 3148 * Returns the baseline, in pixels. | |
| 3149 * | |
| 3150 * Note: this API should not be used if a StyleRange attribute causes lines to | |
| 3151 * have different heights (i.e. different fonts, rise, etc). | |
| 3152 * | |
| 3153 * @return baseline the baseline | |
| 3154 * @exception DWTException <ul> | |
| 3155 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3156 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3157 * </ul> | |
| 3158 * @since 3.0 | |
| 3159 * | |
| 3160 * @see #getBaseline(int) | |
| 3161 */ | |
| 3162 public int getBaseline() { | |
| 3163 checkWidget(); | |
| 3164 return renderer.getBaseline(); | |
| 3165 } | |
| 3166 /** | |
| 3167 * Returns the baseline at the given offset, in pixels. | |
| 3168 * | |
| 3169 * @param offset the offset | |
| 3170 * | |
| 3171 * @return baseline the baseline | |
| 3172 * | |
| 3173 * @exception DWTException <ul> | |
| 3174 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3175 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3176 * </ul> | |
| 3177 * @exception IllegalArgumentException <ul> | |
| 3178 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3179 * </ul> | |
| 3180 * | |
| 3181 * @since 3.2 | |
| 3182 */ | |
| 3183 public int getBaseline(int offset) { | |
| 3184 checkWidget(); | |
| 3185 if (!(0 <= offset && offset <= content.getCharCount())) { | |
| 3186 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3187 } | |
| 3188 if (isFixedLineHeight()) { | |
| 3189 return renderer.getBaseline(); | |
| 3190 } | |
| 3191 int lineIndex = content.getLineAtOffset(offset); | |
| 3192 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3193 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3194 int lineInParagraph = layout.getLineIndex(Math.min(offset - lineOffset, layout.getText().length)); | |
| 3195 FontMetrics metrics = layout.getLineMetrics(lineInParagraph); | |
| 3196 renderer.disposeTextLayout(layout); | |
| 3197 return metrics.getAscent() + metrics.getLeading(); | |
| 3198 } | |
| 3199 /** | |
| 3200 * Gets the BIDI coloring mode. When true the BIDI text display | |
| 3201 * algorithm is applied to segments of text that are the same | |
| 3202 * color. | |
| 3203 * | |
| 3204 * @return the current coloring mode | |
| 3205 * @exception DWTException <ul> | |
| 3206 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3207 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3208 * </ul> | |
| 3209 * | |
| 3210 * @deprecated use BidiSegmentListener instead. | |
| 3211 */ | |
| 3212 public bool getBidiColoring() { | |
| 3213 checkWidget(); | |
| 3214 return bidiColoring; | |
| 3215 } | |
| 3216 /** | |
| 3217 * Returns the index of the last fully visible line. | |
| 3218 * | |
| 3219 * @return index of the last fully visible line. | |
| 3220 */ | |
| 3221 int getBottomIndex() { | |
| 3222 int bottomIndex; | |
| 3223 if (isFixedLineHeight()) { | |
| 3224 int lineCount = 1; | |
| 3225 int lineHeight = renderer.getLineHeight(); | |
| 3226 if (lineHeight !is 0) { | |
| 3227 // calculate the number of lines that are fully visible | |
| 3228 int partialTopLineHeight = topIndex * lineHeight - getVerticalScrollOffset(); | |
| 3229 lineCount = (clientAreaHeight - partialTopLineHeight) / lineHeight; | |
| 3230 } | |
| 3231 bottomIndex = Math.min(content.getLineCount() - 1, topIndex + Math.max(0, lineCount - 1)); | |
| 3232 } else { | |
| 3233 int clientAreaHeight = this.clientAreaHeight - bottomMargin; | |
| 3234 bottomIndex = getLineIndex(clientAreaHeight); | |
| 3235 if (bottomIndex > 0) { | |
| 3236 int linePixel = getLinePixel(bottomIndex); | |
| 3237 int lineHeight = renderer.getLineHeight(bottomIndex); | |
| 3238 if (linePixel + lineHeight > clientAreaHeight) { | |
| 3239 if (getLinePixel(bottomIndex - 1) >= topMargin) { | |
| 3240 bottomIndex--; | |
| 3241 } | |
| 3242 } | |
| 3243 } | |
| 3244 } | |
| 3245 return bottomIndex; | |
| 3246 } | |
| 3247 Rectangle getBoundsAtOffset(int offset) { | |
| 3248 int lineIndex = content.getLineAtOffset(offset); | |
|
212
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Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
3249 String line = content.getLine(lineIndex); |
| 155 | 3250 Rectangle bounds; |
| 3251 if (line.length !is 0) { | |
| 3252 int offsetInLine = offset - content.getOffsetAtLine(lineIndex); | |
| 3253 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3254 bounds = layout.getBounds(offsetInLine, offsetInLine); | |
| 3255 renderer.disposeTextLayout(layout); | |
| 3256 } else { | |
| 3257 bounds = new Rectangle (0, 0, 0, renderer.getLineHeight()); | |
| 3258 } | |
| 3259 bounds.x += leftMargin - horizontalScrollOffset; | |
| 3260 bounds.y += getLinePixel(lineIndex); | |
| 3261 return bounds; | |
| 3262 } | |
| 3263 | |
| 3264 /** | |
| 3265 * Returns the caret position relative to the start of the text. | |
| 3266 * | |
| 3267 * @return the caret position relative to the start of the text. | |
| 3268 * @exception DWTException <ul> | |
| 3269 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3270 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3271 * </ul> | |
| 3272 */ | |
| 3273 public int getCaretOffset() { | |
| 3274 checkWidget(); | |
| 3275 return caretOffset; | |
| 3276 } | |
| 3277 /** | |
| 3278 * Returns the caret width. | |
| 3279 * | |
| 3280 * @return the caret width, 0 if caret is null. | |
| 3281 */ | |
| 3282 int getCaretWidth() { | |
| 3283 Caret caret = getCaret(); | |
| 3284 if (caret is null) return 0; | |
| 3285 return caret.getSize().x; | |
| 3286 } | |
| 3287 Object getClipboardContent(int clipboardType) { | |
| 3288 TextTransfer plainTextTransfer = TextTransfer.getInstance(); | |
| 3289 return clipboard.getContents(plainTextTransfer, clipboardType); | |
| 3290 } | |
| 3291 int getClusterNext(int offset, int lineIndex) { | |
| 3292 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3293 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3294 offset -= lineOffset; | |
| 3295 offset = layout.getNextOffset(offset, DWT.MOVEMENT_CLUSTER); | |
| 3296 offset += lineOffset; | |
| 3297 renderer.disposeTextLayout(layout); | |
| 3298 return offset; | |
| 3299 } | |
| 3300 int getClusterPrevious(int offset, int lineIndex) { | |
| 3301 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3302 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3303 offset -= lineOffset; | |
| 3304 offset = layout.getPreviousOffset(offset, DWT.MOVEMENT_CLUSTER); | |
| 3305 offset += lineOffset; | |
| 3306 renderer.disposeTextLayout(layout); | |
| 3307 return offset; | |
| 3308 } | |
| 3309 /** | |
| 3310 * Returns the content implementation that is used for text storage | |
| 3311 * or null if no user defined content implementation has been set. | |
| 3312 * | |
| 3313 * @return content implementation that is used for text storage or null | |
| 3314 * if no user defined content implementation has been set. | |
| 3315 * @exception DWTException <ul> | |
| 3316 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3317 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3318 * </ul> | |
| 3319 */ | |
| 3320 public StyledTextContent getContent() { | |
| 3321 checkWidget(); | |
| 3322 return content; | |
| 3323 } | |
| 3324 public override bool getDragDetect () { | |
| 3325 checkWidget (); | |
| 3326 return dragDetect_; | |
| 3327 } | |
| 3328 /** | |
| 3329 * Returns whether the widget : double click mouse behavior. | |
| 3330 * | |
| 3331 * @return true if double clicking a word selects the word, false if double clicks | |
| 3332 * have the same effect as regular mouse clicks | |
| 3333 * @exception DWTException <ul> | |
| 3334 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3335 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3336 * </ul> | |
| 3337 */ | |
| 3338 public bool getDoubleClickEnabled() { | |
| 3339 checkWidget(); | |
| 3340 return doubleClickEnabled; | |
| 3341 } | |
| 3342 /** | |
| 3343 * Returns whether the widget content can be edited. | |
| 3344 * | |
| 3345 * @return true if content can be edited, false otherwise | |
| 3346 * @exception DWTException <ul> | |
| 3347 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3348 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3349 * </ul> | |
| 3350 */ | |
| 3351 public bool getEditable() { | |
| 3352 checkWidget(); | |
| 3353 return editable; | |
| 3354 } | |
| 3355 public override Color getForeground() { | |
| 3356 checkWidget(); | |
| 3357 if (foreground is null) { | |
| 3358 return getDisplay().getSystemColor(DWT.COLOR_LIST_FOREGROUND); | |
| 3359 } | |
| 3360 return foreground; | |
| 3361 } | |
| 3362 /** | |
| 3363 * Returns the horizontal scroll increment. | |
| 3364 * | |
| 3365 * @return horizontal scroll increment. | |
| 3366 */ | |
| 3367 int getHorizontalIncrement() { | |
| 3368 return renderer.averageCharWidth; | |
| 3369 } | |
| 3370 /** | |
| 3371 * Returns the horizontal scroll offset relative to the start of the line. | |
| 3372 * | |
| 3373 * @return horizontal scroll offset relative to the start of the line, | |
| 3374 * measured in character increments starting at 0, if > 0 the content is scrolled | |
| 3375 * @exception DWTException <ul> | |
| 3376 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3377 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3378 * </ul> | |
| 3379 */ | |
| 3380 public int getHorizontalIndex() { | |
| 3381 checkWidget(); | |
| 3382 return horizontalScrollOffset / getHorizontalIncrement(); | |
| 3383 } | |
| 3384 /** | |
| 3385 * Returns the horizontal scroll offset relative to the start of the line. | |
| 3386 * | |
| 3387 * @return the horizontal scroll offset relative to the start of the line, | |
| 3388 * measured in pixel starting at 0, if > 0 the content is scrolled. | |
| 3389 * @exception DWTException <ul> | |
| 3390 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3391 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3392 * </ul> | |
| 3393 */ | |
| 3394 public int getHorizontalPixel() { | |
| 3395 checkWidget(); | |
| 3396 return horizontalScrollOffset; | |
| 3397 } | |
| 3398 /** | |
| 3399 * Returns the line indentation of the widget. | |
| 3400 * | |
| 3401 * @return the line indentation | |
| 3402 * | |
| 3403 * @exception DWTException <ul> | |
| 3404 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3405 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3406 * </ul> | |
| 3407 * | |
| 3408 * @see #getLineIndent(int) | |
| 3409 * | |
| 3410 * @since 3.2 | |
| 3411 */ | |
| 3412 public int getIndent() { | |
| 3413 checkWidget(); | |
| 3414 return indent; | |
| 3415 } | |
| 3416 /** | |
| 3417 * Returns whether the widget justifies lines. | |
| 3418 * | |
| 3419 * @return whether lines are justified | |
| 3420 * | |
| 3421 * @exception DWTException <ul> | |
| 3422 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3423 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3424 * </ul> | |
| 3425 * | |
| 3426 * @see #getLineJustify(int) | |
| 3427 * | |
| 3428 * @since 3.2 | |
| 3429 */ | |
| 3430 public bool getJustify() { | |
| 3431 checkWidget(); | |
| 3432 return justify; | |
| 3433 } | |
| 3434 /** | |
| 3435 * Returns the action assigned to the key. | |
| 3436 * Returns DWT.NULL if there is no action associated with the key. | |
| 3437 * | |
| 3438 * @param key a key code defined in DWT.java or a character. | |
| 3439 * Optionally ORd with a state mask. Preferred state masks are one or more of | |
| 3440 * DWT.MOD1, DWT.MOD2, DWT.MOD3, since these masks account for modifier platform | |
| 3441 * differences. However, there may be cases where using the specific state masks | |
| 3442 * (i.e., DWT.CTRL, DWT.SHIFT, DWT.ALT, DWT.COMMAND) makes sense. | |
| 3443 * @return one of the predefined actions defined in ST.java or DWT.NULL | |
| 3444 * if there is no action associated with the key. | |
| 3445 * @exception DWTException <ul> | |
| 3446 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3447 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3448 * </ul> | |
| 3449 */ | |
| 3450 public int getKeyBinding(int key) { | |
| 3451 checkWidget(); | |
| 3452 if( auto p = key in keyActionMap ){ | |
| 3453 return *p; | |
| 3454 } | |
|
169
a52ddf7c3a8f
add missing return value in StyledText.getKeyBinding
Thomas Graber <d4rkdragon@gmail.com>
parents:
155
diff
changeset
|
3455 return DWT.NULL; |
| 155 | 3456 } |
| 3457 /** | |
| 3458 * Gets the number of characters. | |
| 3459 * | |
| 3460 * @return number of characters in the widget | |
| 3461 * @exception DWTException <ul> | |
| 3462 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3463 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3464 * </ul> | |
| 3465 */ | |
| 3466 public int getCharCount() { | |
| 3467 checkWidget(); | |
| 3468 return content.getCharCount(); | |
| 3469 } | |
| 3470 /** | |
| 3471 * Returns the alignment of the line at the given index. | |
| 3472 * | |
| 3473 * @param index the index of the line | |
| 3474 * | |
| 3475 * @return the line alignment | |
| 3476 * | |
| 3477 * @exception DWTException <ul> | |
| 3478 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3479 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3480 * </ul> | |
| 3481 * @exception IllegalArgumentException <ul> | |
| 3482 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3483 * </ul> | |
| 3484 * | |
| 3485 * @see #getAlignment() | |
| 3486 * | |
| 3487 * @since 3.2 | |
| 3488 */ | |
| 3489 public int getLineAlignment(int index) { | |
| 3490 checkWidget(); | |
| 3491 if (index < 0 || index > content.getLineCount()) { | |
| 3492 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3493 } | |
| 3494 return renderer.getLineAlignment(index, alignment); | |
| 3495 } | |
| 3496 /** | |
| 3497 * Returns the line at the specified offset in the text | |
| 3498 * where 0 < offset < getCharCount() so that getLineAtOffset(getCharCount()) | |
| 3499 * returns the line of the insert location. | |
| 3500 * | |
| 3501 * @param offset offset relative to the start of the content. | |
| 3502 * 0 <= offset <= getCharCount() | |
| 3503 * @return line at the specified offset in the text | |
| 3504 * @exception DWTException <ul> | |
| 3505 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3506 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3507 * </ul> | |
| 3508 * @exception IllegalArgumentException <ul> | |
| 3509 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3510 * </ul> | |
| 3511 */ | |
| 3512 public int getLineAtOffset(int offset) { | |
| 3513 checkWidget(); | |
| 3514 if (offset < 0 || offset > getCharCount()) { | |
| 3515 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3516 } | |
| 3517 return content.getLineAtOffset(offset); | |
| 3518 } | |
| 3519 /** | |
| 3520 * Returns the background color of the line at the given index. | |
| 3521 * Returns null if a LineBackgroundListener has been set or if no background | |
| 3522 * color has been specified for the line. Should not be called if a | |
| 3523 * LineBackgroundListener has been set since the listener maintains the | |
| 3524 * line background colors. | |
| 3525 * | |
| 3526 * @param index the index of the line | |
| 3527 * @return the background color of the line at the given index. | |
| 3528 * | |
| 3529 * @exception DWTException <ul> | |
| 3530 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3531 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3532 * </ul> | |
| 3533 * @exception IllegalArgumentException <ul> | |
| 3534 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3535 * </ul> | |
| 3536 */ | |
| 3537 public Color getLineBackground(int index) { | |
| 3538 checkWidget(); | |
| 3539 if (index < 0 || index > content.getLineCount()) { | |
| 3540 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3541 } | |
| 3542 return isListening(LineGetBackground) ? null : renderer.getLineBackground(index, null); | |
| 3543 } | |
| 3544 /** | |
| 3545 * Returns the bullet of the line at the given index. | |
| 3546 * | |
| 3547 * @param index the index of the line | |
| 3548 * | |
| 3549 * @return the line bullet | |
| 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 * @since 3.2 | |
| 3560 */ | |
| 3561 public Bullet getLineBullet(int index) { | |
| 3562 checkWidget(); | |
| 3563 if (index < 0 || index > content.getLineCount()) { | |
| 3564 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3565 } | |
| 3566 return isListening(LineGetStyle) ? null : renderer.getLineBullet(index, null); | |
| 3567 } | |
| 3568 /** | |
| 3569 * Returns the line background data for the given line or null if | |
| 3570 * there is none. | |
| 3571 * | |
| 3572 * @param lineOffset offset of the line start relative to the start | |
| 3573 * of the content. | |
| 3574 * @param line line to get line background data for | |
| 3575 * @return line background data for the given line. | |
| 3576 */ | |
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3577 StyledTextEvent getLineBackgroundData(int lineOffset, String line) { |
| 155 | 3578 return sendLineEvent(LineGetBackground, lineOffset, line); |
| 3579 } | |
| 3580 /** | |
| 3581 * Gets the number of text lines. | |
| 3582 * | |
| 3583 * @return the number of lines in the widget | |
| 3584 * @exception DWTException <ul> | |
| 3585 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3586 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3587 * </ul> | |
| 3588 */ | |
| 3589 public int getLineCount() { | |
| 3590 checkWidget(); | |
| 3591 return content.getLineCount(); | |
| 3592 } | |
| 3593 /** | |
| 3594 * Returns the number of lines that can be completely displayed in the | |
| 3595 * widget client area. | |
| 3596 * | |
| 3597 * @return number of lines that can be completely displayed in the widget | |
| 3598 * client area. | |
| 3599 */ | |
| 3600 int getLineCountWhole() { | |
| 3601 if (isFixedLineHeight()) { | |
| 3602 int lineHeight = renderer.getLineHeight(); | |
| 3603 return lineHeight !is 0 ? clientAreaHeight / lineHeight : 1; | |
| 3604 } | |
| 3605 return getBottomIndex() - topIndex + 1; | |
| 3606 } | |
| 3607 /** | |
| 3608 * Returns the line delimiter used for entering new lines by key down | |
| 3609 * or paste operation. | |
| 3610 * | |
| 3611 * @return line delimiter used for entering new lines by key down | |
| 3612 * or paste operation. | |
| 3613 * @exception DWTException <ul> | |
| 3614 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3615 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3616 * </ul> | |
| 3617 */ | |
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3618 public String getLineDelimiter() { |
| 155 | 3619 checkWidget(); |
| 3620 return content.getLineDelimiter(); | |
| 3621 } | |
| 3622 /** | |
| 3623 * Returns the line height. | |
| 3624 * <p> | |
| 3625 * Note: this API should not be used if a StyleRange attribute causes lines to | |
| 3626 * have different heights (i.e. different fonts, rise, etc). | |
| 3627 * </p> | |
| 3628 * | |
| 3629 * @return line height in pixel. | |
| 3630 * @exception DWTException <ul> | |
| 3631 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3632 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3633 * </ul> | |
| 3634 * @see #getLineHeight(int) | |
| 3635 */ | |
| 3636 public int getLineHeight() { | |
| 3637 checkWidget(); | |
| 3638 return renderer.getLineHeight(); | |
| 3639 } | |
| 3640 /** | |
| 3641 * Returns the line height at the given offset. | |
| 3642 * | |
| 3643 * @param offset the offset | |
| 3644 * | |
| 3645 * @return line height in pixels | |
| 3646 * | |
| 3647 * @exception DWTException <ul> | |
| 3648 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3649 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3650 * </ul> | |
| 3651 * @exception IllegalArgumentException <ul> | |
| 3652 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3653 * </ul> | |
| 3654 * | |
| 3655 * @since 3.2 | |
| 3656 */ | |
| 3657 public int getLineHeight(int offset) { | |
| 3658 checkWidget(); | |
| 3659 if (!(0 <= offset && offset <= content.getCharCount())) { | |
| 3660 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3661 } | |
| 3662 if (isFixedLineHeight()) { | |
| 3663 return renderer.getLineHeight(); | |
| 3664 } | |
| 3665 int lineIndex = content.getLineAtOffset(offset); | |
| 3666 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3667 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3668 int lineInParagraph = layout.getLineIndex(Math.min(offset - lineOffset, layout.getText().length)); | |
| 3669 int height = layout.getLineBounds(lineInParagraph).height; | |
| 3670 renderer.disposeTextLayout(layout); | |
| 3671 return height; | |
| 3672 } | |
| 3673 /** | |
| 3674 * Returns the indentation of the line at the given index. | |
| 3675 * | |
| 3676 * @param index the index of the line | |
| 3677 * | |
| 3678 * @return the line indentation | |
| 3679 * | |
| 3680 * @exception DWTException <ul> | |
| 3681 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3682 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3683 * </ul> | |
| 3684 * @exception IllegalArgumentException <ul> | |
| 3685 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3686 * </ul> | |
| 3687 * | |
| 3688 * @see #getIndent() | |
| 3689 * | |
| 3690 * @since 3.2 | |
| 3691 */ | |
| 3692 public int getLineIndent(int index) { | |
| 3693 checkWidget(); | |
| 3694 if (index < 0 || index > content.getLineCount()) { | |
| 3695 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3696 } | |
| 3697 return isListening(LineGetStyle) ? 0 : renderer.getLineIndent(index, indent); | |
| 3698 } | |
| 3699 /** | |
| 3700 * Returns whether the line at the given index is justified. | |
| 3701 * | |
| 3702 * @param index the index of the line | |
| 3703 * | |
| 3704 * @return whether the line is justified | |
| 3705 * | |
| 3706 * @exception DWTException <ul> | |
| 3707 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3708 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3709 * </ul> | |
| 3710 * @exception IllegalArgumentException <ul> | |
| 3711 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3712 * </ul> | |
| 3713 * | |
| 3714 * @see #getJustify() | |
| 3715 * | |
| 3716 * @since 3.2 | |
| 3717 */ | |
| 3718 public bool getLineJustify(int index) { | |
| 3719 checkWidget(); | |
| 3720 if (index < 0 || index > content.getLineCount()) { | |
| 3721 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3722 } | |
| 3723 return isListening(LineGetStyle) ? false : renderer.getLineJustify(index, justify); | |
| 3724 } | |
| 3725 /** | |
| 3726 * Returns the line spacing of the widget. | |
| 3727 * | |
| 3728 * @return the line spacing | |
| 3729 * | |
| 3730 * @exception DWTException <ul> | |
| 3731 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3732 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3733 * </ul> | |
| 3734 * | |
| 3735 * @since 3.2 | |
| 3736 */ | |
| 3737 public int getLineSpacing() { | |
| 3738 checkWidget(); | |
| 3739 return lineSpacing; | |
| 3740 } | |
| 3741 /** | |
| 3742 * Returns the line style data for the given line or null if there is | |
| 3743 * none. | |
| 3744 * <p> | |
| 3745 * If there is a LineStyleListener but it does not set any styles, | |
| 3746 * the StyledTextEvent.styles field will be initialized to an empty | |
| 3747 * array. | |
| 3748 * </p> | |
| 3749 * | |
| 3750 * @param lineOffset offset of the line start relative to the start of | |
| 3751 * the content. | |
| 3752 * @param line line to get line styles for | |
| 3753 * @return line style data for the given line. Styles may start before | |
| 3754 * line start and end after line end | |
| 3755 */ | |
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3756 StyledTextEvent getLineStyleData(int lineOffset, String line) { |
| 155 | 3757 return sendLineEvent(LineGetStyle, lineOffset, line); |
| 3758 } | |
| 3759 /** | |
| 3760 * Returns the top pixel, relative to the client area, of a given line. | |
| 3761 * Clamps out of ranges index. | |
| 3762 * | |
| 3763 * @param lineIndex the line index, the max value is lineCount. If | |
| 3764 * lineIndex is lineCount it returns the bottom pixel of the last line. | |
| 3765 * It means this function can be used to retrieve the bottom pixel of any line. | |
| 3766 * | |
| 3767 * @since 3.2 | |
| 3768 */ | |
| 3769 public int getLinePixel(int lineIndex) { | |
| 3770 checkWidget(); | |
| 3771 int lineCount = content.getLineCount(); | |
| 3772 lineIndex = Math.max(0, Math.min(lineCount, lineIndex)); | |
| 3773 if (isFixedLineHeight()) { | |
| 3774 int lineHeight = renderer.getLineHeight(); | |
| 3775 return lineIndex * lineHeight - getVerticalScrollOffset() + topMargin; | |
| 3776 } | |
| 3777 if (lineIndex is topIndex) return topIndexY + topMargin; | |
| 3778 int height = topIndexY; | |
| 3779 if (lineIndex > topIndex) { | |
| 3780 for (int i = topIndex; i < lineIndex; i++) { | |
| 3781 height += renderer.getLineHeight(i); | |
| 3782 } | |
| 3783 } else { | |
| 3784 for (int i = topIndex - 1; i >= lineIndex; i--) { | |
| 3785 height -= renderer.getLineHeight(i); | |
| 3786 } | |
| 3787 } | |
| 3788 return height + topMargin; | |
| 3789 } | |
| 3790 /** | |
| 3791 * Returns the line index for a y, relative to the client area. | |
| 3792 * The line index returned is always in the range 0..lineCount - 1. | |
| 3793 * | |
| 3794 * @since 3.2 | |
| 3795 */ | |
| 3796 public int getLineIndex(int y) { | |
| 3797 checkWidget(); | |
| 3798 y -= topMargin; | |
| 3799 if (isFixedLineHeight()) { | |
| 3800 int lineHeight = renderer.getLineHeight(); | |
| 3801 int lineIndex = (y + getVerticalScrollOffset()) / lineHeight; | |
| 3802 int lineCount = content.getLineCount(); | |
| 3803 lineIndex = Math.max(0, Math.min(lineCount - 1, lineIndex)); | |
| 3804 return lineIndex; | |
| 3805 } | |
| 3806 if (y is topIndexY) return topIndex; | |
| 3807 int line = topIndex; | |
| 3808 if (y < topIndexY) { | |
| 3809 while (y < topIndexY && line > 0) { | |
| 3810 y += renderer.getLineHeight(--line); | |
| 3811 } | |
| 3812 } else { | |
| 3813 int lineCount = content.getLineCount(); | |
| 3814 int lineHeight = renderer.getLineHeight(line); | |
| 3815 while (y - lineHeight >= topIndexY && line < lineCount - 1) { | |
| 3816 y -= lineHeight; | |
| 3817 lineHeight = renderer.getLineHeight(++line); | |
| 3818 } | |
| 3819 } | |
| 3820 return line; | |
| 3821 } | |
| 3822 /** | |
| 3823 * Returns the x, y location of the upper left corner of the character | |
| 3824 * bounding box at the specified offset in the text. The point is | |
| 3825 * relative to the upper left corner of the widget client area. | |
| 3826 * | |
| 3827 * @param offset offset relative to the start of the content. | |
| 3828 * 0 <= offset <= getCharCount() | |
| 3829 * @return x, y location of the upper left corner of the character | |
| 3830 * bounding box at the specified offset in the text. | |
| 3831 * @exception DWTException <ul> | |
| 3832 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3833 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3834 * </ul> | |
| 3835 * @exception IllegalArgumentException <ul> | |
| 3836 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3837 * </ul> | |
| 3838 */ | |
| 3839 public Point getLocationAtOffset(int offset) { | |
| 3840 checkWidget(); | |
| 3841 if (offset < 0 || offset > getCharCount()) { | |
| 3842 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3843 } | |
| 3844 return getPointAtOffset(offset); | |
| 3845 } | |
| 3846 /** | |
| 3847 * Returns the character offset of the first character of the given line. | |
| 3848 * | |
| 3849 * @param lineIndex index of the line, 0 based relative to the first | |
| 3850 * line in the content. 0 <= lineIndex < getLineCount(), except | |
| 3851 * lineIndex may always be 0 | |
| 3852 * @return offset offset of the first character of the line, relative to | |
| 3853 * the beginning of the document. The first character of the document is | |
| 3854 * at offset 0. | |
| 3855 * When there are not any lines, getOffsetAtLine(0) is a valid call that | |
| 3856 * answers 0. | |
| 3857 * @exception DWTException <ul> | |
| 3858 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3859 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3860 * </ul> | |
| 3861 * @exception IllegalArgumentException <ul> | |
| 3862 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3863 * </ul> | |
| 3864 * @since 2.0 | |
| 3865 */ | |
| 3866 public int getOffsetAtLine(int lineIndex) { | |
| 3867 checkWidget(); | |
| 3868 if (lineIndex < 0 || | |
| 3869 (lineIndex > 0 && lineIndex >= content.getLineCount())) { | |
| 3870 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3871 } | |
| 3872 return content.getOffsetAtLine(lineIndex); | |
| 3873 } | |
| 3874 /** | |
| 3875 * Returns the offset of the character at the given location relative | |
| 3876 * to the first character in the document. | |
| 3877 * <p> | |
| 3878 * The return value reflects the character offset that the caret will | |
| 3879 * be placed at if a mouse click occurred at the specified location. | |
| 3880 * If the x coordinate of the location is beyond the center of a character | |
| 3881 * the returned offset will be behind the character. | |
| 3882 * </p> | |
| 3883 * | |
| 3884 * @param point the origin of character bounding box relative to | |
| 3885 * the origin of the widget client area. | |
| 3886 * @return offset of the character at the given location relative | |
| 3887 * to the first character in the document. | |
| 3888 * @exception DWTException <ul> | |
| 3889 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3890 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3891 * </ul> | |
| 3892 * @exception IllegalArgumentException <ul> | |
| 3893 * <li>ERROR_NULL_ARGUMENT when point is null</li> | |
| 3894 * <li>ERROR_INVALID_ARGUMENT when there is no character at the specified location</li> | |
| 3895 * </ul> | |
| 3896 */ | |
| 3897 public int getOffsetAtLocation(Point point) { | |
| 3898 checkWidget(); | |
| 3899 if (point is null) { | |
| 3900 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 3901 } | |
| 3902 // is y above first line or is x before first column? | |
| 3903 if (point.y + getVerticalScrollOffset() < 0 || point.x + horizontalScrollOffset < 0) { | |
| 3904 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3905 } | |
| 3906 int bottomIndex = getLineIndex(clientAreaHeight); | |
| 3907 int height = getLinePixel(bottomIndex) + renderer.getLineHeight(bottomIndex); | |
| 3908 if (point.y > height) { | |
| 3909 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3910 } | |
| 3911 int lineIndex = getLineIndex(point.y); | |
| 3912 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3913 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3914 int[] trailing = new int[1]; | |
| 3915 int x = point.x + horizontalScrollOffset - leftMargin ; | |
| 3916 int y = point.y - getLinePixel(lineIndex); | |
| 3917 int offsetInLine = layout.getOffset(x, y, trailing); | |
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|
3918 String line = content.getLine(lineIndex); |
| 155 | 3919 if (offsetInLine !is line.length - 1) { |
| 3920 offsetInLine = Math.min(line.length, offsetInLine + trailing[0]); | |
| 3921 } | |
| 3922 Rectangle rect = layout.getLineBounds(layout.getLineIndex(offsetInLine)); | |
| 3923 renderer.disposeTextLayout(layout); | |
| 3924 if (x > rect.x + rect.width) { | |
| 3925 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3926 } | |
| 3927 return lineOffset + offsetInLine; | |
| 3928 } | |
| 3929 int getOffsetAtPoint(int x, int y) { | |
| 3930 int lineIndex = getLineIndex(y); | |
| 3931 y -= getLinePixel(lineIndex); | |
| 3932 return getOffsetAtPoint(x, y, lineIndex); | |
| 3933 } | |
| 3934 /** | |
| 3935 * Returns the offset at the specified x location in the specified line. | |
| 3936 * | |
| 3937 * @param x x location of the mouse location | |
| 3938 * @param line line the mouse location is in | |
| 3939 * @return the offset at the specified x location in the specified line, | |
| 3940 * relative to the beginning of the document | |
| 3941 */ | |
| 3942 int getOffsetAtPoint(int x, int y, int lineIndex) { | |
| 3943 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3944 x += horizontalScrollOffset - leftMargin; | |
| 3945 int[] trailing = new int[1]; | |
| 3946 int offsetInLine = layout.getOffset(x, y, trailing); | |
| 3947 caretAlignment = OFFSET_LEADING; | |
| 3948 if (trailing[0] !is 0) { | |
| 3949 int lineInParagraph = layout.getLineIndex(offsetInLine + trailing[0]); | |
| 3950 //TODO handle bidi text | |
| 3951 int lineStart = layout.getLineOffsets()[lineInParagraph]; | |
| 3952 if (offsetInLine + trailing[0] is lineStart) { | |
| 3953 offsetInLine += trailing[0]; | |
| 3954 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 3955 } else { | |
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|
3956 String line = content.getLine(lineIndex); |
| 155 | 3957 int level; |
| 3958 int offset = offsetInLine; | |
| 3959 while (offset > 0 && tango.text.Unicode.isDigit(line[offset])) offset--; | |
| 3960 if (offset is 0 && tango.text.Unicode.isDigit(line[offset])) { | |
| 3961 level = isMirrored() ? 1 : 0; | |
| 3962 } else { | |
| 3963 level = layout.getLevel(offset) & 0x1; | |
| 3964 } | |
| 3965 offsetInLine += trailing[0]; | |
| 3966 int trailingLevel = layout.getLevel(offsetInLine) & 0x1; | |
| 3967 if ((level ^ trailingLevel) !is 0) { | |
| 3968 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 3969 } else { | |
| 3970 caretAlignment = OFFSET_LEADING; | |
| 3971 } | |
| 3972 } | |
| 3973 } | |
| 3974 renderer.disposeTextLayout(layout); | |
| 3975 return offsetInLine + content.getOffsetAtLine(lineIndex); | |
| 3976 } | |
| 3977 /** | |
| 3978 * Returns the orientation of the receiver. | |
| 3979 * | |
| 3980 * @return the orientation style | |
| 3981 * | |
| 3982 * @exception DWTException <ul> | |
| 3983 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3984 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3985 * </ul> | |
| 3986 * | |
| 3987 * @since 2.1.2 | |
| 3988 */ | |
| 3989 public int getOrientation () { | |
| 3990 checkWidget(); | |
| 3991 return isMirrored() ? DWT.RIGHT_TO_LEFT : DWT.LEFT_TO_RIGHT; | |
| 3992 } | |
| 3993 /** | |
| 3994 * Returns the index of the last partially visible line. | |
| 3995 * | |
| 3996 * @return index of the last partially visible line. | |
| 3997 */ | |
| 3998 int getPartialBottomIndex() { | |
| 3999 if (isFixedLineHeight()) { | |
| 4000 int lineHeight = renderer.getLineHeight(); | |
| 4001 int partialLineCount = Compatibility.ceil(clientAreaHeight, lineHeight); | |
| 4002 return Math.min(content.getLineCount(), topIndex + partialLineCount) - 1; | |
| 4003 } | |
| 4004 return getLineIndex(clientAreaHeight - bottomMargin); | |
| 4005 } | |
| 4006 /** | |
| 4007 * Returns the index of the first partially visible line. | |
| 4008 * | |
| 4009 * @return index of the first partially visible line. | |
| 4010 */ | |
| 4011 int getPartialTopIndex() { | |
| 4012 if (isFixedLineHeight()) { | |
| 4013 int lineHeight = renderer.getLineHeight(); | |
| 4014 return getVerticalScrollOffset() / lineHeight; | |
| 4015 } | |
| 4016 return topIndexY <= 0 ? topIndex : topIndex - 1; | |
| 4017 } | |
| 4018 /** | |
| 4019 * Returns the content in the specified range using the platform line | |
| 4020 * delimiter to separate lines. | |
| 4021 * | |
| 4022 * @param writer the TextWriter to write line text into | |
| 4023 * @return the content in the specified range using the platform line | |
| 4024 * delimiter to separate lines as written by the specified TextWriter. | |
| 4025 */ | |
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4026 String getPlatformDelimitedText(TextWriter writer) { |
| 155 | 4027 int end = writer.getStart() + writer.getCharCount(); |
| 4028 int startLine = content.getLineAtOffset(writer.getStart()); | |
| 4029 int endLine = content.getLineAtOffset(end); | |
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4030 String endLineText = content.getLine(endLine); |
| 155 | 4031 int endLineOffset = content.getOffsetAtLine(endLine); |
| 4032 | |
| 4033 for (int i = startLine; i <= endLine; i++) { | |
| 4034 writer.writeLine(content.getLine(i), content.getOffsetAtLine(i)); | |
| 4035 if (i < endLine) { | |
| 4036 writer.writeLineDelimiter(PlatformLineDelimiter); | |
| 4037 } | |
| 4038 } | |
| 4039 if (end > endLineOffset + endLineText.length) { | |
| 4040 writer.writeLineDelimiter(PlatformLineDelimiter); | |
| 4041 } | |
| 4042 writer.close(); | |
| 4043 return writer.toString(); | |
| 4044 } | |
| 4045 /** | |
| 4046 * Returns all the ranges of text that have an associated StyleRange. | |
| 4047 * Returns an empty array if a LineStyleListener has been set. | |
| 4048 * Should not be called if a LineStyleListener has been set since the | |
| 4049 * listener maintains the styles. | |
| 4050 * <p> | |
| 4051 * The ranges array contains start and length pairs. Each pair refers to | |
| 4052 * the corresponding style in the styles array. For example, the pair | |
| 4053 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 4054 * at styles[n/2] returned by <code>getStyleRanges(int, int, bool)</code>. | |
| 4055 * </p> | |
| 4056 * | |
| 4057 * @return the ranges or an empty array if a LineStyleListener has been set. | |
| 4058 * | |
| 4059 * @exception DWTException <ul> | |
| 4060 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4061 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4062 * </ul> | |
| 4063 * | |
| 4064 * @since 3.2 | |
| 4065 * | |
| 4066 * @see #getStyleRanges(bool) | |
| 4067 */ | |
| 4068 public int[] getRanges() { | |
| 4069 checkWidget(); | |
| 4070 if (!isListening(LineGetStyle)) { | |
| 4071 int[] ranges = renderer.getRanges(0, content.getCharCount()); | |
| 4072 if (ranges !is null) return ranges; | |
| 4073 } | |
| 4074 return new int[0]; | |
| 4075 } | |
| 4076 /** | |
| 4077 * Returns the ranges of text that have an associated StyleRange. | |
| 4078 * Returns an empty array if a LineStyleListener has been set. | |
| 4079 * Should not be called if a LineStyleListener has been set since the | |
| 4080 * listener maintains the styles. | |
| 4081 * <p> | |
| 4082 * The ranges array contains start and length pairs. Each pair refers to | |
| 4083 * the corresponding style in the styles array. For example, the pair | |
| 4084 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 4085 * at styles[n/2] returned by <code>getStyleRanges(int, int, bool)</code>. | |
| 4086 * </p> | |
| 4087 * | |
| 4088 * @param start the start offset of the style ranges to return | |
| 4089 * @param length the number of style ranges to return | |
| 4090 * | |
| 4091 * @return the ranges or an empty array if a LineStyleListener has been set. | |
| 4092 * | |
| 4093 * @exception DWTException <ul> | |
| 4094 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4095 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4096 * </ul> | |
| 4097 * @exception IllegalArgumentException <ul> | |
| 4098 * <li>ERROR_INVALID_RANGE if start or length are outside the widget content</li> | |
| 4099 * </ul> | |
| 4100 * | |
| 4101 * @since 3.2 | |
| 4102 * | |
| 4103 * @see #getStyleRanges(int, int, bool) | |
| 4104 */ | |
| 4105 public int[] getRanges(int start, int length) { | |
| 4106 checkWidget(); | |
| 4107 int contentLength = getCharCount(); | |
| 4108 int end = start + length; | |
| 4109 if (start > end || start < 0 || end > contentLength) { | |
| 4110 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 4111 } | |
| 4112 if (!isListening(LineGetStyle)) { | |
| 4113 int[] ranges = renderer.getRanges(start, length); | |
| 4114 if (ranges !is null) return ranges; | |
| 4115 } | |
| 4116 return new int[0]; | |
| 4117 } | |
| 4118 /** | |
| 4119 * Returns the selection. | |
| 4120 * <p> | |
| 4121 * Text selections are specified in terms of caret positions. In a text | |
| 4122 * widget that contains N characters, there are N+1 caret positions, | |
| 4123 * ranging from 0..N | |
| 4124 * </p> | |
| 4125 * | |
| 4126 * @return start and end of the selection, x is the offset of the first | |
| 4127 * selected character, y is the offset after the last selected character. | |
| 4128 * The selection values returned are visual (i.e., x will always always be | |
| 4129 * <= y). To determine if a selection is right-to-left (RtoL) vs. left-to-right | |
| 4130 * (LtoR), compare the caretOffset to the start and end of the selection | |
| 4131 * (e.g., caretOffset is start of selection implies that the selection is RtoL). | |
| 4132 * @see #getSelectionRange | |
| 4133 * @exception DWTException <ul> | |
| 4134 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4135 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4136 * </ul> | |
| 4137 */ | |
| 4138 public Point getSelection() { | |
| 4139 checkWidget(); | |
| 4140 return new Point(selection.x, selection.y); | |
| 4141 } | |
| 4142 /** | |
| 4143 * Returns the selection. | |
| 4144 * | |
| 4145 * @return start and length of the selection, x is the offset of the | |
| 4146 * first selected character, relative to the first character of the | |
| 4147 * widget content. y is the length of the selection. | |
| 4148 * The selection values returned are visual (i.e., length will always always be | |
| 4149 * positive). To determine if a selection is right-to-left (RtoL) vs. left-to-right | |
| 4150 * (LtoR), compare the caretOffset to the start and end of the selection | |
| 4151 * (e.g., caretOffset is start of selection implies that the selection is RtoL). | |
| 4152 * @exception DWTException <ul> | |
| 4153 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4154 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4155 * </ul> | |
| 4156 */ | |
| 4157 public Point getSelectionRange() { | |
| 4158 checkWidget(); | |
| 4159 return new Point(selection.x, selection.y - selection.x); | |
| 4160 } | |
| 4161 /** | |
| 4162 * Returns the receiver's selection background color. | |
| 4163 * | |
| 4164 * @return the selection background color | |
| 4165 * | |
| 4166 * @exception DWTException <ul> | |
| 4167 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4168 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4169 * </ul> | |
| 4170 * @since 2.1 | |
| 4171 */ | |
| 4172 public Color getSelectionBackground() { | |
| 4173 checkWidget(); | |
| 4174 if (selectionBackground is null) { | |
| 4175 return getDisplay().getSystemColor(DWT.COLOR_LIST_SELECTION); | |
| 4176 } | |
| 4177 return selectionBackground; | |
| 4178 } | |
| 4179 /** | |
| 4180 * Gets the number of selected characters. | |
| 4181 * | |
| 4182 * @return the number of selected characters. | |
| 4183 * @exception DWTException <ul> | |
| 4184 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4185 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4186 * </ul> | |
| 4187 */ | |
| 4188 public int getSelectionCount() { | |
| 4189 checkWidget(); | |
| 4190 return getSelectionRange().y; | |
| 4191 } | |
| 4192 /** | |
| 4193 * Returns the receiver's selection foreground color. | |
| 4194 * | |
| 4195 * @return the selection foreground color | |
| 4196 * | |
| 4197 * @exception DWTException <ul> | |
| 4198 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4199 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4200 * </ul> | |
| 4201 * @since 2.1 | |
| 4202 */ | |
| 4203 public Color getSelectionForeground() { | |
| 4204 checkWidget(); | |
| 4205 if (selectionForeground is null) { | |
| 4206 return getDisplay().getSystemColor(DWT.COLOR_LIST_SELECTION_TEXT); | |
| 4207 } | |
| 4208 return selectionForeground; | |
| 4209 } | |
| 4210 /** | |
| 4211 * Returns the selected text. | |
| 4212 * | |
| 4213 * @return selected text, or an empty String if there is no selection. | |
| 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 */ | |
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4219 public String getSelectionText() { |
| 155 | 4220 checkWidget(); |
| 4221 return content.getTextRange(selection.x, selection.y - selection.x); | |
| 4222 } | |
| 4223 public override int getStyle() { | |
| 4224 int style = super.getStyle(); | |
| 4225 style &= ~(DWT.LEFT_TO_RIGHT | DWT.RIGHT_TO_LEFT | DWT.MIRRORED); | |
| 4226 if (isMirrored()) { | |
| 4227 style |= DWT.RIGHT_TO_LEFT | DWT.MIRRORED; | |
| 4228 } else { | |
| 4229 style |= DWT.LEFT_TO_RIGHT; | |
| 4230 } | |
| 4231 return style; | |
| 4232 } | |
| 4233 | |
| 4234 /** | |
| 4235 * Returns the text segments that should be treated as if they | |
| 4236 * had a different direction than the surrounding text. | |
| 4237 * | |
| 4238 * @param lineOffset offset of the first character in the line. | |
| 4239 * 0 based from the beginning of the document. | |
| 4240 * @param line text of the line to specify bidi segments for | |
| 4241 * @return text segments that should be treated as if they had a | |
| 4242 * different direction than the surrounding text. Only the start | |
| 4243 * index of a segment is specified, relative to the start of the | |
| 4244 * line. Always starts with 0 and ends with the line length. | |
| 4245 * @exception IllegalArgumentException <ul> | |
| 4246 * <li>ERROR_INVALID_ARGUMENT - if the segment indices returned | |
| 4247 * by the listener do not start with 0, are not in ascending order, | |
| 4248 * exceed the line length or have duplicates</li> | |
| 4249 * </ul> | |
| 4250 */ | |
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4251 int [] getBidiSegments(int lineOffset, String line) { |
| 155 | 4252 if (!isBidi()) return null; |
| 4253 if (!isListening(LineGetSegments)) { | |
| 4254 return getBidiSegmentsCompatibility(line, lineOffset); | |
| 4255 } | |
| 4256 StyledTextEvent event = sendLineEvent(LineGetSegments, lineOffset, line); | |
| 4257 int lineLength = line.length; | |
| 4258 int[] segments; | |
| 4259 if (event is null || event.segments is null || event.segments.length is 0) { | |
| 4260 segments = [0, lineLength]; | |
| 4261 } else { | |
| 4262 int segmentCount = event.segments.length; | |
| 4263 | |
| 4264 // test segment index consistency | |
| 4265 if (event.segments[0] !is 0) { | |
| 4266 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 4267 } | |
| 4268 for (int i = 1; i < segmentCount; i++) { | |
| 4269 if (event.segments[i] <= event.segments[i - 1] || event.segments[i] > lineLength) { | |
| 4270 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 4271 } | |
| 4272 } | |
| 4273 // ensure that last segment index is line end offset | |
| 4274 if (event.segments[segmentCount - 1] !is lineLength) { | |
| 4275 segments = new int[segmentCount + 1]; | |
| 4276 System.arraycopy(event.segments, 0, segments, 0, segmentCount); | |
| 4277 segments[segmentCount] = lineLength; | |
| 4278 } else { | |
| 4279 segments = event.segments; | |
| 4280 } | |
| 4281 } | |
| 4282 return segments; | |
| 4283 } | |
| 4284 /** | |
| 4285 * @see #getBidiSegments | |
| 4286 * Supports deprecated setBidiColoring API. Remove when API is removed. | |
| 4287 */ | |
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4288 int [] getBidiSegmentsCompatibility(String line, int lineOffset) { |
| 155 | 4289 int lineLength = line.length; |
| 4290 if (!bidiColoring) { | |
| 4291 return [0, lineLength]; | |
| 4292 } | |
| 4293 StyleRange [] styles = null; | |
| 4294 StyledTextEvent event = getLineStyleData(lineOffset, line); | |
| 4295 if (event !is null) { | |
| 4296 styles = event.styles; | |
| 4297 } else { | |
| 4298 styles = renderer.getStyleRanges(lineOffset, lineLength, true); | |
| 4299 } | |
| 4300 if (styles is null || styles.length is 0) { | |
| 4301 return [0, lineLength]; | |
| 4302 } | |
| 4303 int k=0, count = 1; | |
| 4304 while (k < styles.length && styles[k].start is 0 && styles[k].length is lineLength) { | |
| 4305 k++; | |
| 4306 } | |
| 4307 int[] offsets = new int[(styles.length - k) * 2 + 2]; | |
| 4308 for (int i = k; i < styles.length; i++) { | |
| 4309 StyleRange style = styles[i]; | |
| 4310 int styleLineStart = Math.max(style.start - lineOffset, 0); | |
| 4311 int styleLineEnd = Math.max(style.start + style.length - lineOffset, styleLineStart); | |
| 4312 styleLineEnd = Math.min (styleLineEnd, line.length ); | |
| 4313 if (i > 0 && count > 1 && | |
| 4314 ((styleLineStart >= offsets[count-2] && styleLineStart <= offsets[count-1]) || | |
| 4315 (styleLineEnd >= offsets[count-2] && styleLineEnd <= offsets[count-1])) && | |
| 4316 style.similarTo(styles[i-1])) { | |
| 4317 offsets[count-2] = Math.min(offsets[count-2], styleLineStart); | |
| 4318 offsets[count-1] = Math.max(offsets[count-1], styleLineEnd); | |
| 4319 } else { | |
| 4320 if (styleLineStart > offsets[count - 1]) { | |
| 4321 offsets[count] = styleLineStart; | |
| 4322 count++; | |
| 4323 } | |
| 4324 offsets[count] = styleLineEnd; | |
| 4325 count++; | |
| 4326 } | |
| 4327 } | |
| 4328 // add offset for last non-colored segment in line, if any | |
| 4329 if (lineLength > offsets[count-1]) { | |
| 4330 offsets [count] = lineLength; | |
| 4331 count++; | |
| 4332 } | |
| 4333 if (count is offsets.length) { | |
| 4334 return offsets; | |
| 4335 } | |
| 4336 int [] result = new int [count]; | |
| 4337 System.arraycopy (offsets, 0, result, 0, count); | |
| 4338 return result; | |
| 4339 } | |
| 4340 /** | |
| 4341 * Returns the style range at the given offset. | |
| 4342 * <p> | |
| 4343 * Returns null if a LineStyleListener has been set or if a style is not set | |
| 4344 * for the offset. | |
| 4345 * Should not be called if a LineStyleListener has been set since the | |
| 4346 * listener maintains the styles. | |
| 4347 * </p> | |
| 4348 * | |
| 4349 * @param offset the offset to return the style for. | |
| 4350 * 0 <= offset < getCharCount() must be true. | |
| 4351 * @return a StyleRange with start is offset and length is 1, indicating | |
| 4352 * the style at the given offset. null if a LineStyleListener has been set | |
| 4353 * or if a style is not set for the given offset. | |
| 4354 * @exception DWTException <ul> | |
| 4355 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4356 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4357 * </ul> | |
| 4358 * @exception IllegalArgumentException <ul> | |
| 4359 * <li>ERROR_INVALID_ARGUMENT when the offset is invalid</li> | |
| 4360 * </ul> | |
| 4361 */ | |
| 4362 public StyleRange getStyleRangeAtOffset(int offset) { | |
| 4363 checkWidget(); | |
| 4364 if (offset < 0 || offset >= getCharCount()) { | |
| 4365 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 4366 } | |
| 4367 if (!isListening(LineGetStyle)) { | |
| 4368 StyleRange[] ranges = renderer.getStyleRanges(offset, 1, true); | |
| 4369 if (ranges !is null) return ranges[0]; | |
| 4370 } | |
| 4371 return null; | |
| 4372 } | |
| 4373 /** | |
| 4374 * Returns the styles. | |
| 4375 * <p> | |
| 4376 * Returns an empty array if a LineStyleListener has been set. | |
| 4377 * Should not be called if a LineStyleListener has been set since the | |
| 4378 * listener maintains the styles. | |
| 4379 * <p></p> | |
| 4380 * Note: Because a StyleRange includes the start and length, the | |
| 4381 * same instance cannot occur multiple times in the array of styles. | |
| 4382 * If the same style attributes, such as font and color, occur in | |
| 4383 * multiple StyleRanges, <code>getStyleRanges(bool)</code> | |
| 4384 * can be used to get the styles without the ranges. | |
| 4385 * </p> | |
| 4386 * | |
| 4387 * @return the styles or an empty array if a LineStyleListener has been set. | |
| 4388 * | |
| 4389 * @exception DWTException <ul> | |
| 4390 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4391 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4392 * </ul> | |
| 4393 * | |
| 4394 * @see #getStyleRanges(bool) | |
| 4395 */ | |
| 4396 public StyleRange[] getStyleRanges() { | |
| 4397 checkWidget(); | |
| 4398 return getStyleRanges(0, content.getCharCount(), true); | |
| 4399 } | |
| 4400 /** | |
| 4401 * Returns the styles. | |
| 4402 * <p> | |
| 4403 * Returns an empty array if a LineStyleListener has been set. | |
| 4404 * Should not be called if a LineStyleListener has been set since the | |
| 4405 * listener maintains the styles. | |
| 4406 * </p><p> | |
| 4407 * Note: When <code>includeRanges</code> is true, the start and length | |
| 4408 * fields of each StyleRange will be valid, however the StyleRange | |
| 4409 * objects may need to be cloned. When <code>includeRanges</code> is | |
| 4410 * false, <code>getRanges(int, int)</code> can be used to get the | |
| 4411 * associated ranges. | |
| 4412 * </p> | |
| 4413 * | |
| 4414 * @param includeRanges whether the start and length field of the StyleRanges should be set. | |
| 4415 * | |
| 4416 * @return the styles or an empty array if a LineStyleListener has been set. | |
| 4417 * | |
| 4418 * @exception DWTException <ul> | |
| 4419 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4420 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4421 * </ul> | |
| 4422 * | |
| 4423 * @since 3.2 | |
| 4424 * | |
| 4425 * @see #getRanges(int, int) | |
| 4426 * @see #setStyleRanges(int[], StyleRange[]) | |
| 4427 */ | |
| 4428 public StyleRange[] getStyleRanges(bool includeRanges) { | |
| 4429 checkWidget(); | |
| 4430 return getStyleRanges(0, content.getCharCount(), includeRanges); | |
| 4431 } | |
| 4432 /** | |
| 4433 * Returns the styles for the given text range. | |
| 4434 * <p> | |
| 4435 * Returns an empty array if a LineStyleListener has been set. | |
| 4436 * Should not be called if a LineStyleListener has been set since the | |
| 4437 * listener maintains the styles. | |
| 4438 * </p><p> | |
| 4439 * Note: Because the StyleRange includes the start and length, the | |
| 4440 * same instance cannot occur multiple times in the array of styles. | |
| 4441 * If the same style attributes, such as font and color, occur in | |
| 4442 * multiple StyleRanges, <code>getStyleRanges(int, int, bool)</code> | |
| 4443 * can be used to get the styles without the ranges. | |
| 4444 * </p> | |
| 4445 * @param start the start offset of the style ranges to return | |
| 4446 * @param length the number of style ranges to return | |
| 4447 * | |
| 4448 * @return the styles or an empty array if a LineStyleListener has | |
| 4449 * been set. The returned styles will reflect the given range. The first | |
| 4450 * returned <code>StyleRange</code> will have a starting offset >= start | |
| 4451 * and the last returned <code>StyleRange</code> will have an ending | |
| 4452 * offset <= start + length - 1 | |
| 4453 * | |
| 4454 * @exception DWTException <ul> | |
| 4455 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4456 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4457 * </ul> | |
| 4458 * @exception IllegalArgumentException <ul> | |
| 4459 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4460 * </ul> | |
| 4461 * | |
| 4462 * @see #getStyleRanges(int, int, bool) | |
| 4463 * | |
| 4464 * @since 3.0 | |
| 4465 */ | |
| 4466 public StyleRange[] getStyleRanges(int start, int length) { | |
| 4467 checkWidget(); | |
| 4468 return getStyleRanges(start, length, true); | |
| 4469 } | |
| 4470 /** | |
| 4471 * Returns the styles for the given text range. | |
| 4472 * <p> | |
| 4473 * Returns an empty array if a LineStyleListener has been set. | |
| 4474 * Should not be called if a LineStyleListener has been set since the | |
| 4475 * listener maintains the styles. | |
| 4476 * </p><p> | |
| 4477 * Note: When <code>includeRanges</code> is true, the start and length | |
| 4478 * fields of each StyleRange will be valid, however the StyleRange | |
| 4479 * objects may need to be cloned. When <code>includeRanges</code> is | |
| 4480 * false, <code>getRanges(int, int)</code> can be used to get the | |
| 4481 * associated ranges. | |
| 4482 * </p> | |
| 4483 * | |
| 4484 * @param start the start offset of the style ranges to return | |
| 4485 * @param length the number of style ranges to return | |
| 4486 * @param includeRanges whether the start and length field of the StyleRanges should be set. | |
| 4487 * | |
| 4488 * @return the styles or an empty array if a LineStyleListener has | |
| 4489 * been set. The returned styles will reflect the given range. The first | |
| 4490 * returned <code>StyleRange</code> will have a starting offset >= start | |
| 4491 * and the last returned <code>StyleRange</code> will have an ending | |
| 4492 * offset <= start + length - 1 | |
| 4493 * | |
| 4494 * @exception DWTException <ul> | |
| 4495 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4496 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4497 * </ul> | |
| 4498 * @exception IllegalArgumentException <ul> | |
| 4499 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4500 * </ul> | |
| 4501 * | |
| 4502 * @since 3.2 | |
| 4503 * | |
| 4504 * @see #getRanges(int, int) | |
| 4505 * @see #setStyleRanges(int[], StyleRange[]) | |
| 4506 */ | |
| 4507 public StyleRange[] getStyleRanges(int start, int length, bool includeRanges) { | |
| 4508 checkWidget(); | |
| 4509 int contentLength = getCharCount(); | |
| 4510 int end = start + length; | |
| 4511 if (start > end || start < 0 || end > contentLength) { | |
| 4512 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 4513 } | |
| 4514 if (!isListening(LineGetStyle)) { | |
| 4515 StyleRange[] ranges = renderer.getStyleRanges(start, length, includeRanges); | |
| 4516 if (ranges !is null) return ranges; | |
| 4517 } | |
| 4518 return new StyleRange[0]; | |
| 4519 } | |
| 4520 /** | |
| 4521 * Returns the tab width measured in characters. | |
| 4522 * | |
| 4523 * @return tab width measured in characters | |
| 4524 * @exception DWTException <ul> | |
| 4525 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4526 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4527 * </ul> | |
| 4528 */ | |
| 4529 public int getTabs() { | |
| 4530 checkWidget(); | |
| 4531 return tabLength; | |
| 4532 } | |
| 4533 /** | |
| 4534 * Returns a copy of the widget content. | |
| 4535 * | |
| 4536 * @return copy of the widget content | |
| 4537 * @exception DWTException <ul> | |
| 4538 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4539 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4540 * </ul> | |
| 4541 */ | |
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4542 public String getText() { |
| 155 | 4543 checkWidget(); |
| 4544 return content.getTextRange(0, getCharCount()); | |
| 4545 } | |
| 4546 /** | |
| 4547 * Returns the widget content between the two offsets. | |
| 4548 * | |
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4549 * @param start offset of the first character in the returned String |
| 155 | 4550 * @param end offset of the last character in the returned String |
| 4551 * @return widget content starting at start and ending at end | |
| 4552 * @see #getTextRange(int,int) | |
| 4553 * @exception DWTException <ul> | |
| 4554 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4555 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4556 * </ul> | |
| 4557 * @exception IllegalArgumentException <ul> | |
| 4558 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4559 * </ul> | |
| 4560 */ | |
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4561 public String getText(int start, int end) { |
| 155 | 4562 checkWidget(); |
| 4563 int contentLength = getCharCount(); | |
| 4564 if (start < 0 || start >= contentLength || end < 0 || end >= contentLength || start > end) { | |
| 4565 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 4566 } | |
| 4567 return content.getTextRange(start, end - start + 1); | |
| 4568 } | |
| 4569 /** | |
| 4570 * Returns the smallest bounding rectangle that includes the characters between two offsets. | |
| 4571 * | |
| 4572 * @param start offset of the first character included in the bounding box | |
| 4573 * @param end offset of the last character included in the bounding box | |
| 4574 * @return bounding box of the text between start and end | |
| 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 * @since 3.1 | |
| 4583 */ | |
| 4584 public Rectangle getTextBounds(int start, int end) { | |
| 4585 checkWidget(); | |
| 4586 int contentLength = getCharCount(); | |
| 4587 if (start < 0 || start >= contentLength || end < 0 || end >= contentLength || start > end) { | |
| 4588 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 4589 } | |
| 4590 int lineStart = content.getLineAtOffset(start); | |
| 4591 int lineEnd = content.getLineAtOffset(end); | |
| 4592 Rectangle rect; | |
| 4593 int y = getLinePixel(lineStart); | |
| 4594 int height = 0; | |
| 4595 int left = 0x7fffffff, right = 0; | |
| 4596 for (int i = lineStart; i <= lineEnd; i++) { | |
| 4597 int lineOffset = content.getOffsetAtLine(i); | |
| 4598 TextLayout layout = renderer.getTextLayout(i); | |
| 4599 if (layout.getText().length > 0) { | |
| 4600 if (i is lineStart && i is lineEnd) { | |
| 4601 rect = layout.getBounds(start - lineOffset, end - lineOffset); | |
| 4602 } else if (i is lineStart) { | |
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4603 String line = content.getLine(i); |
| 155 | 4604 rect = layout.getBounds(start - lineOffset, line.length); |
| 4605 } else if (i is lineEnd) { | |
| 4606 rect = layout.getBounds(0, end - lineOffset); | |
| 4607 } else { | |
| 4608 rect = layout.getBounds(); | |
| 4609 } | |
| 4610 left = Math.min(left, rect.x); | |
| 4611 right = Math.max(right, rect.x + rect.width); | |
| 4612 height += rect.height; | |
| 4613 } else { | |
| 4614 height += renderer.getLineHeight(); | |
| 4615 } | |
| 4616 renderer.disposeTextLayout(layout); | |
| 4617 } | |
| 4618 rect = new Rectangle (left, y, right-left, height); | |
| 4619 rect.x += leftMargin - horizontalScrollOffset; | |
| 4620 return rect; | |
| 4621 } | |
| 4622 /** | |
| 4623 * Returns the widget content starting at start for length characters. | |
| 4624 * | |
| 4625 * @param start offset of the first character in the returned String | |
| 4626 * @param length number of characters to return | |
| 4627 * @return widget content starting at start and extending length characters. | |
| 4628 * @exception DWTException <ul> | |
| 4629 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4630 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4631 * </ul> | |
| 4632 * @exception IllegalArgumentException <ul> | |
| 4633 * <li>ERROR_INVALID_RANGE when start and/or length are outside the widget content</li> | |
| 4634 * </ul> | |
| 4635 */ | |
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4636 public String getTextRange(int start, int length) { |
| 155 | 4637 checkWidget(); |
| 4638 int contentLength = getCharCount(); | |
| 4639 int end = start + length; | |
| 4640 if (start > end || start < 0 || end > contentLength) { | |
| 4641 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 4642 } | |
| 4643 return content.getTextRange(start, length); | |
| 4644 } | |
| 4645 /** | |
| 4646 * Returns the maximum number of characters that the receiver is capable of holding. | |
| 4647 * | |
| 4648 * @return the text limit | |
| 4649 * | |
| 4650 * @exception DWTException <ul> | |
| 4651 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4652 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4653 * </ul> | |
| 4654 */ | |
| 4655 public int getTextLimit() { | |
| 4656 checkWidget(); | |
| 4657 return textLimit; | |
| 4658 } | |
| 4659 /** | |
| 4660 * Gets the top index. | |
| 4661 * <p> | |
| 4662 * The top index is the index of the fully visible line that is currently | |
| 4663 * at the top of the widget or the topmost partially visible line if no line is fully visible. | |
| 4664 * The top index changes when the widget is scrolled. Indexing is zero based. | |
| 4665 * </p> | |
| 4666 * | |
| 4667 * @return the index of the top line | |
| 4668 * @exception DWTException <ul> | |
| 4669 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4670 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4671 * </ul> | |
| 4672 */ | |
| 4673 public int getTopIndex() { | |
| 4674 checkWidget(); | |
| 4675 return topIndex; | |
| 4676 } | |
| 4677 /** | |
| 4678 * Gets the top pixel. | |
| 4679 * <p> | |
| 4680 * The top pixel is the pixel position of the line that is | |
| 4681 * currently at the top of the widget. The text widget can be scrolled by pixels | |
| 4682 * by dragging the scroll thumb so that a partial line may be displayed at the top | |
| 4683 * the widget. The top pixel changes when the widget is scrolled. The top pixel | |
| 4684 * does not include the widget trimming. | |
| 4685 * </p> | |
| 4686 * | |
| 4687 * @return pixel position of the top line | |
| 4688 * @exception DWTException <ul> | |
| 4689 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4690 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4691 * </ul> | |
| 4692 */ | |
| 4693 public int getTopPixel() { | |
| 4694 checkWidget(); | |
| 4695 return getVerticalScrollOffset(); | |
| 4696 } | |
| 4697 /** | |
| 4698 * Returns the vertical scroll increment. | |
| 4699 * | |
| 4700 * @return vertical scroll increment. | |
| 4701 */ | |
| 4702 int getVerticalIncrement() { | |
| 4703 return renderer.getLineHeight(); | |
| 4704 } | |
| 4705 int getVerticalScrollOffset() { | |
| 4706 if (verticalScrollOffset is -1) { | |
| 4707 renderer.calculate(0, topIndex); | |
| 4708 int height = 0; | |
| 4709 for (int i = 0; i < topIndex; i++) { | |
| 4710 height += renderer.getLineHeight(i); | |
| 4711 } | |
| 4712 height -= topIndexY; | |
| 4713 verticalScrollOffset = height; | |
| 4714 } | |
| 4715 return verticalScrollOffset; | |
| 4716 } | |
| 4717 int getVisualLineIndex(TextLayout layout, int offsetInLine) { | |
| 4718 int lineIndex = layout.getLineIndex(offsetInLine); | |
| 4719 int[] offsets = layout.getLineOffsets(); | |
| 4720 if (lineIndex !is 0 && offsetInLine is offsets[lineIndex]) { | |
| 4721 int lineY = layout.getLineBounds(lineIndex).y; | |
| 4722 int caretY = getCaret().getLocation().y - topMargin - getLinePixel(getCaretLine()); | |
| 4723 if (lineY > caretY) lineIndex--; | |
| 4724 } | |
| 4725 return lineIndex; | |
| 4726 } | |
| 4727 int getCaretDirection() { | |
| 4728 if (!isBidiCaret()) return DWT.DEFAULT; | |
| 4729 if (!updateCaretDirection && caretDirection !is DWT.NULL) return caretDirection; | |
| 4730 updateCaretDirection = false; | |
| 4731 int caretLine = getCaretLine(); | |
| 4732 int lineOffset = content.getOffsetAtLine(caretLine); | |
|
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4733 String line = content.getLine(caretLine); |
| 155 | 4734 int offset = caretOffset - lineOffset; |
| 4735 int lineLength = line.length; | |
| 4736 if (lineLength is 0) return isMirrored() ? DWT.RIGHT : DWT.LEFT; | |
| 4737 if (caretAlignment is PREVIOUS_OFFSET_TRAILING && offset > 0) offset--; | |
| 4738 if (offset is lineLength && offset > 0) offset--; | |
| 4739 while (offset > 0 && tango.text.Unicode.isDigit(line[offset])) offset--; | |
| 4740 if (offset is 0 && tango.text.Unicode.isDigit(line[offset])) { | |
| 4741 return isMirrored() ? DWT.RIGHT : DWT.LEFT; | |
| 4742 } | |
| 4743 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 4744 int level = layout.getLevel(offset); | |
| 4745 renderer.disposeTextLayout(layout); | |
| 4746 return ((level & 1) !is 0) ? DWT.RIGHT : DWT.LEFT; | |
| 4747 } | |
| 4748 /* | |
| 4749 * Returns the index of the line the caret is on. | |
| 4750 */ | |
| 4751 int getCaretLine() { | |
| 4752 return content.getLineAtOffset(caretOffset); | |
| 4753 } | |
| 4754 int getWrapWidth () { | |
| 4755 if (wordWrap && !isSingleLine()) { | |
| 4756 int width = clientAreaWidth - leftMargin - rightMargin; | |
| 4757 return width > 0 ? width : 1; | |
| 4758 } | |
| 4759 return -1; | |
| 4760 } | |
| 4761 int getWordNext (int offset, int movement) { | |
| 4762 int newOffset, lineOffset; | |
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4763 String lineText; |
| 155 | 4764 if (offset >= getCharCount()) { |
| 4765 newOffset = offset; | |
| 4766 int lineIndex = content.getLineCount() - 1; | |
| 4767 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4768 lineText = content.getLine(lineIndex); | |
| 4769 } else { | |
| 4770 int lineIndex = content.getLineAtOffset(offset); | |
| 4771 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4772 lineText = content.getLine(lineIndex); | |
| 4773 int lineLength = lineText.length; | |
| 4774 if (offset is lineOffset + lineLength) { | |
| 4775 newOffset = content.getOffsetAtLine(lineIndex + 1); | |
| 4776 } else { | |
| 4777 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4778 newOffset = lineOffset + layout.getNextOffset(offset - lineOffset, movement); | |
| 4779 renderer.disposeTextLayout(layout); | |
| 4780 } | |
| 4781 } | |
| 4782 return sendWordBoundaryEvent(WordNext, movement, offset, newOffset, lineText, lineOffset); | |
| 4783 } | |
| 4784 int getWordPrevious(int offset, int movement) { | |
| 4785 int newOffset, lineOffset; | |
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4786 String lineText; |
| 155 | 4787 if (offset <= 0) { |
| 4788 newOffset = 0; | |
| 4789 int lineIndex = content.getLineAtOffset(newOffset); | |
| 4790 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4791 lineText = content.getLine(lineIndex); | |
| 4792 } else { | |
| 4793 int lineIndex = content.getLineAtOffset(offset); | |
| 4794 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4795 lineText = content.getLine(lineIndex); | |
| 4796 if (offset is lineOffset) { | |
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|
4797 String nextLineText = content.getLine(lineIndex - 1); |
| 155 | 4798 int nextLineOffset = content.getOffsetAtLine(lineIndex - 1); |
| 4799 newOffset = nextLineOffset + nextLineText.length; | |
| 4800 } else { | |
| 4801 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4802 newOffset = lineOffset + layout.getPreviousOffset(offset - lineOffset, movement); | |
| 4803 renderer.disposeTextLayout(layout); | |
| 4804 } | |
| 4805 } | |
| 4806 return sendWordBoundaryEvent(WordPrevious, movement, offset, newOffset, lineText, lineOffset); | |
| 4807 } | |
| 4808 /** | |
| 4809 * Returns whether the widget wraps lines. | |
| 4810 * | |
| 4811 * @return true if widget wraps lines, false otherwise | |
| 4812 * @since 2.0 | |
| 4813 */ | |
| 4814 public bool getWordWrap() { | |
| 4815 checkWidget(); | |
| 4816 return wordWrap; | |
| 4817 } | |
| 4818 /** | |
| 4819 * Returns the location of the given offset. | |
| 4820 * <p> | |
| 4821 * <b>NOTE:</b> Does not return correct values for true italic fonts (vs. slanted fonts). | |
| 4822 * </p> | |
| 4823 * | |
| 4824 * @return location of the character at the given offset in the line. | |
| 4825 */ | |
| 4826 Point getPointAtOffset(int offset) { | |
| 4827 int lineIndex = content.getLineAtOffset(offset); | |
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4828 String line = content.getLine(lineIndex); |
| 155 | 4829 int lineOffset = content.getOffsetAtLine(lineIndex); |
| 4830 int offsetInLine = offset - lineOffset; | |
| 4831 int lineLength = line.length; | |
| 4832 if (lineIndex < content.getLineCount() - 1) { | |
| 4833 int endLineOffset = content.getOffsetAtLine(lineIndex + 1) - 1; | |
| 4834 if (lineLength < offsetInLine && offsetInLine <= endLineOffset) { | |
| 4835 offsetInLine = lineLength; | |
| 4836 } | |
| 4837 } | |
| 4838 Point point; | |
| 4839 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4840 if (lineLength !is 0 && offsetInLine <= lineLength) { | |
| 4841 if (offsetInLine is lineLength) { | |
| 4842 point = layout.getLocation(offsetInLine - 1, true); | |
| 4843 } else { | |
| 4844 switch (caretAlignment) { | |
| 4845 case OFFSET_LEADING: | |
| 4846 point = layout.getLocation(offsetInLine, false); | |
| 4847 break; | |
| 4848 case PREVIOUS_OFFSET_TRAILING: | |
| 4849 default: | |
| 4850 if (offsetInLine is 0) { | |
| 4851 point = layout.getLocation(offsetInLine, false); | |
| 4852 } else { | |
| 4853 point = layout.getLocation(offsetInLine - 1, true); | |
| 4854 } | |
| 4855 break; | |
| 4856 } | |
| 4857 } | |
| 4858 } else { | |
| 4859 point = new Point(layout.getIndent(), 0); | |
| 4860 } | |
| 4861 renderer.disposeTextLayout(layout); | |
| 4862 point.x += leftMargin - horizontalScrollOffset; | |
| 4863 point.y += getLinePixel(lineIndex); | |
| 4864 return point; | |
| 4865 } | |
| 4866 /** | |
| 4867 * Inserts a string. The old selection is replaced with the new text. | |
| 4868 * | |
| 4869 * @param string the string | |
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4870 * @see #replaceTextRange(int,int,String) |
| 155 | 4871 * @exception DWTException <ul> |
| 4872 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4873 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4874 * </ul> | |
| 4875 * @exception IllegalArgumentException <ul> | |
| 4876 * <li>ERROR_NULL_ARGUMENT when string is null</li> | |
| 4877 * </ul> | |
| 4878 */ | |
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4879 public void insert(String string) { |
| 155 | 4880 checkWidget(); |
| 4881 if (string is null) { | |
| 4882 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 4883 } | |
| 4884 Point sel = getSelectionRange(); | |
| 4885 replaceTextRange(sel.x, sel.y, string); | |
| 4886 } | |
| 4887 /** | |
| 4888 * Creates content change listeners and set the default content model. | |
| 4889 */ | |
| 4890 void installDefaultContent() { | |
| 4891 textChangeListener = new class() TextChangeListener { | |
| 4892 public void textChanging(TextChangingEvent event) { | |
| 4893 handleTextChanging(event); | |
| 4894 } | |
| 4895 public void textChanged(TextChangedEvent event) { | |
| 4896 handleTextChanged(event); | |
| 4897 } | |
| 4898 public void textSet(TextChangedEvent event) { | |
| 4899 handleTextSet(event); | |
| 4900 } | |
| 4901 }; | |
| 4902 content = new DefaultContent(); | |
| 4903 content.addTextChangeListener(textChangeListener); | |
| 4904 } | |
| 4905 /** | |
| 4906 * Adds event listeners | |
| 4907 */ | |
| 4908 void installListeners() { | |
| 4909 ScrollBar verticalBar = getVerticalBar(); | |
| 4910 ScrollBar horizontalBar = getHorizontalBar(); | |
| 4911 | |
| 4912 listener = new class() Listener { | |
| 4913 public void handleEvent(Event event) { | |
| 4914 switch (event.type) { | |
| 4915 case DWT.Dispose: handleDispose(event); break; | |
| 4916 case DWT.KeyDown: handleKeyDown(event); break; | |
| 4917 case DWT.KeyUp: handleKeyUp(event); break; | |
| 4918 case DWT.MouseDown: handleMouseDown(event); break; | |
| 4919 case DWT.MouseUp: handleMouseUp(event); break; | |
| 4920 case DWT.MouseMove: handleMouseMove(event); break; | |
| 4921 case DWT.Paint: handlePaint(event); break; | |
| 4922 case DWT.Resize: handleResize(event); break; | |
| 4923 case DWT.Traverse: handleTraverse(event); break; | |
| 4924 default: | |
| 4925 } | |
| 4926 } | |
| 4927 }; | |
| 4928 addListener(DWT.Dispose, listener); | |
| 4929 addListener(DWT.KeyDown, listener); | |
| 4930 addListener(DWT.KeyUp, listener); | |
| 4931 addListener(DWT.MouseDown, listener); | |
| 4932 addListener(DWT.MouseUp, listener); | |
| 4933 addListener(DWT.MouseMove, listener); | |
| 4934 addListener(DWT.Paint, listener); | |
| 4935 addListener(DWT.Resize, listener); | |
| 4936 addListener(DWT.Traverse, listener); | |
| 4937 if (verticalBar !is null) { | |
| 4938 verticalBar.addListener(DWT.Selection, new class() Listener { | |
| 4939 public void handleEvent(Event event) { | |
| 4940 handleVerticalScroll(event); | |
| 4941 } | |
| 4942 }); | |
| 4943 } | |
| 4944 if (horizontalBar !is null) { | |
| 4945 horizontalBar.addListener(DWT.Selection, new class() Listener { | |
| 4946 public void handleEvent(Event event) { | |
| 4947 handleHorizontalScroll(event); | |
| 4948 } | |
| 4949 }); | |
| 4950 } | |
| 4951 } | |
| 4952 void internalRedrawRange(int start, int length) { | |
| 4953 if (length <= 0) return; | |
| 4954 int end = start + length; | |
| 4955 int startLine = content.getLineAtOffset(start); | |
| 4956 int endLine = content.getLineAtOffset(end); | |
| 4957 int partialBottomIndex = getPartialBottomIndex(); | |
| 4958 int partialTopIndex = getPartialTopIndex(); | |
| 4959 if (startLine > partialBottomIndex || endLine < partialTopIndex) { | |
| 4960 return; | |
| 4961 } | |
| 4962 if (partialTopIndex > startLine) { | |
| 4963 startLine = partialTopIndex; | |
| 4964 start = 0; | |
| 4965 } else { | |
| 4966 start -= content.getOffsetAtLine(startLine); | |
| 4967 } | |
| 4968 if (partialBottomIndex < endLine) { | |
| 4969 endLine = partialBottomIndex + 1; | |
| 4970 end = 0; | |
| 4971 } else { | |
| 4972 end -= content.getOffsetAtLine(endLine); | |
| 4973 } | |
| 4974 | |
| 4975 TextLayout layout = renderer.getTextLayout(startLine); | |
| 4976 int lineX = leftMargin - horizontalScrollOffset, startLineY = getLinePixel(startLine); | |
| 4977 int[] offsets = layout.getLineOffsets(); | |
| 4978 int startIndex = layout.getLineIndex(Math.min(start, layout.getText().length)); | |
| 4979 | |
| 4980 /* Redraw end of line before start line if wrapped and start offset is first char */ | |
| 4981 if (wordWrap && startIndex > 0 && offsets[startIndex] is start) { | |
| 4982 Rectangle rect = layout.getLineBounds(startIndex - 1); | |
| 4983 rect.x = rect.width; | |
| 4984 rect.width = clientAreaWidth - rightMargin - rect.x; | |
| 4985 rect.x += lineX; | |
| 4986 rect.y += startLineY; | |
| 4987 super.redraw(rect.x, rect.y, rect.width, rect.height, false); | |
| 4988 } | |
| 4989 | |
| 4990 if (startLine is endLine) { | |
| 4991 int endIndex = layout.getLineIndex(Math.min(end, layout.getText().length)); | |
| 4992 if (startIndex is endIndex) { | |
| 4993 /* Redraw rect between start and end offset if start and end offsets are in same wrapped line */ | |
| 4994 Rectangle rect = layout.getBounds(start, end - 1); | |
| 4995 rect.x += lineX; | |
| 4996 rect.y += startLineY; | |
| 4997 super.redraw(rect.x, rect.y, rect.width, rect.height, false); | |
| 4998 renderer.disposeTextLayout(layout); | |
| 4999 return; | |
| 5000 } | |
| 5001 } | |
| 5002 | |
| 5003 /* Redraw start line from the start offset to the end of client area */ | |
| 5004 Rectangle startRect = layout.getBounds(start, offsets[startIndex + 1] - 1); | |
| 5005 if (startRect.height is 0) { | |
| 5006 Rectangle bounds = layout.getLineBounds(startIndex); | |
| 5007 startRect.x = bounds.width; | |
| 5008 startRect.y = bounds.y; | |
| 5009 startRect.height = bounds.height; | |
| 5010 } | |
| 5011 startRect.x += lineX; | |
| 5012 startRect.y += startLineY; | |
| 5013 startRect.width = clientAreaWidth - rightMargin - startRect.x; | |
| 5014 super.redraw(startRect.x, startRect.y, startRect.width, startRect.height, false); | |
| 5015 | |
| 5016 /* Redraw end line from the beginning of the line to the end offset */ | |
| 5017 if (startLine !is endLine) { | |
| 5018 renderer.disposeTextLayout(layout); | |
| 5019 layout = renderer.getTextLayout(endLine); | |
| 5020 offsets = layout.getLineOffsets(); | |
| 5021 } | |
| 5022 int endIndex = layout.getLineIndex(Math.min(end, layout.getText().length)); | |
| 5023 Rectangle endRect = layout.getBounds(offsets[endIndex], end - 1); | |
| 5024 if (endRect.height is 0) { | |
| 5025 Rectangle bounds = layout.getLineBounds(endIndex); | |
| 5026 endRect.y = bounds.y; | |
| 5027 endRect.height = bounds.height; | |
| 5028 } | |
| 5029 endRect.x += lineX; | |
| 5030 endRect.y += getLinePixel(endLine); | |
| 5031 super.redraw(endRect.x, endRect.y, endRect.width, endRect.height, false); | |
| 5032 renderer.disposeTextLayout(layout); | |
| 5033 | |
| 5034 /* Redraw all lines in between start and end line */ | |
| 5035 int y = startRect.y + startRect.height; | |
| 5036 if (endRect.y > y) { | |
| 5037 super.redraw(leftMargin, y, clientAreaWidth - rightMargin - leftMargin, endRect.y - y, false); | |
| 5038 } | |
| 5039 } | |
| 5040 /** | |
| 5041 * Frees resources. | |
| 5042 */ | |
| 5043 void handleDispose(Event event) { | |
| 5044 removeListener(DWT.Dispose, listener); | |
| 5045 notifyListeners(DWT.Dispose, event); | |
| 5046 event.type = DWT.None; | |
| 5047 | |
| 5048 clipboard.dispose(); | |
| 5049 if (renderer !is null) { | |
| 5050 renderer.dispose(); | |
| 5051 renderer = null; | |
| 5052 } | |
| 5053 if (content !is null) { | |
| 5054 content.removeTextChangeListener(textChangeListener); | |
| 5055 content = null; | |
| 5056 } | |
| 5057 if (defaultCaret !is null) { | |
| 5058 defaultCaret.dispose(); | |
| 5059 defaultCaret = null; | |
| 5060 } | |
| 5061 if (leftCaretBitmap !is null) { | |
| 5062 leftCaretBitmap.dispose(); | |
| 5063 leftCaretBitmap = null; | |
| 5064 } | |
| 5065 if (rightCaretBitmap !is null) { | |
| 5066 rightCaretBitmap.dispose(); | |
| 5067 rightCaretBitmap = null; | |
| 5068 } | |
| 5069 if (isBidiCaret()) { | |
| 5070 BidiUtil.removeLanguageListener(handle); | |
| 5071 } | |
| 5072 selectionBackground = null; | |
| 5073 selectionForeground = null; | |
| 5074 textChangeListener = null; | |
| 5075 selection = null; | |
| 5076 doubleClickSelection = null; | |
| 5077 keyActionMap = null; | |
| 5078 background = null; | |
| 5079 foreground = null; | |
| 5080 clipboard = null; | |
| 5081 } | |
| 5082 /** | |
| 5083 * Scrolls the widget horizontally. | |
| 5084 */ | |
| 5085 void handleHorizontalScroll(Event event) { | |
| 5086 int scrollPixel = getHorizontalBar().getSelection() - horizontalScrollOffset; | |
| 5087 scrollHorizontal(scrollPixel, false); | |
| 5088 } | |
| 5089 /** | |
| 5090 * If an action has been registered for the key stroke execute the action. | |
| 5091 * Otherwise, if a character has been entered treat it as new content. | |
| 5092 * | |
| 5093 * @param event keyboard event | |
| 5094 */ | |
| 5095 void handleKey(Event event) { | |
| 5096 int action; | |
| 5097 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 5098 if (event.keyCode !is 0) { | |
| 5099 // special key pressed (e.g., F1) | |
| 5100 action = getKeyBinding(event.keyCode | event.stateMask); | |
| 5101 } else { | |
| 5102 // character key pressed | |
| 5103 action = getKeyBinding(event.character | event.stateMask); | |
| 5104 if (action is DWT.NULL) { | |
| 5105 // see if we have a control character | |
| 5106 if ((event.stateMask & DWT.CTRL) !is 0 && (event.character >= 0) && event.character <= 31) { | |
| 5107 // get the character from the CTRL+char sequence, the control | |
| 5108 // key subtracts 64 from the value of the key that it modifies | |
| 5109 int c = event.character + 64; | |
| 5110 action = getKeyBinding(c | event.stateMask); | |
| 5111 } | |
| 5112 } | |
| 5113 } | |
| 5114 if (action is DWT.NULL) { | |
| 5115 bool ignore = false; | |
| 5116 | |
| 5117 if (IS_CARBON) { | |
| 5118 // Ignore accelerator key combinations (we do not want to | |
| 5119 // insert a character in the text in this instance). Do not | |
| 5120 // ignore COMMAND+ALT combinations since that key sequence | |
| 5121 // produces characters on the mac. | |
| 5122 ignore = (event.stateMask ^ DWT.COMMAND) is 0 || | |
| 5123 (event.stateMask ^ (DWT.COMMAND | DWT.SHIFT)) is 0; | |
| 5124 } else if (IS_MOTIF) { | |
| 5125 // Ignore accelerator key combinations (we do not want to | |
| 5126 // insert a character in the text in this instance). Do not | |
| 5127 // ignore ALT combinations since this key sequence | |
| 5128 // produces characters on motif. | |
| 5129 ignore = (event.stateMask ^ DWT.CTRL) is 0 || | |
| 5130 (event.stateMask ^ (DWT.CTRL | DWT.SHIFT)) is 0; | |
| 5131 } else { | |
| 5132 // Ignore accelerator key combinations (we do not want to | |
| 5133 // insert a character in the text in this instance). Don't | |
| 5134 // ignore CTRL+ALT combinations since that is the Alt Gr | |
| 5135 // key on some keyboards. See bug 20953. | |
| 5136 ignore = (event.stateMask ^ DWT.ALT) is 0 || | |
| 5137 (event.stateMask ^ DWT.CTRL) is 0 || | |
| 5138 (event.stateMask ^ (DWT.ALT | DWT.SHIFT)) is 0 || | |
| 5139 (event.stateMask ^ (DWT.CTRL | DWT.SHIFT)) is 0; | |
| 5140 } | |
| 5141 // -ignore anything below SPACE except for line delimiter keys and tab. | |
| 5142 // -ignore DEL | |
| 5143 if (!ignore && event.character > 31 && event.character !is DWT.DEL || | |
| 5144 event.character is DWT.CR || event.character is DWT.LF || | |
| 5145 event.character is TAB) { | |
| 5146 doContent(event.character); | |
| 5147 update(); | |
| 5148 } | |
| 5149 } else { | |
| 5150 invokeAction(action); | |
| 5151 } | |
| 5152 } | |
| 5153 /** | |
| 5154 * If a VerifyKey listener exists, verify that the key that was entered | |
| 5155 * should be processed. | |
| 5156 * | |
| 5157 * @param event keyboard event | |
| 5158 */ | |
| 5159 void handleKeyDown(Event event) { | |
| 5160 if (clipboardSelection is null) { | |
| 5161 clipboardSelection = new Point(selection.x, selection.y); | |
| 5162 } | |
| 5163 | |
| 5164 Event verifyEvent = new Event(); | |
| 5165 verifyEvent.character = event.character; | |
| 5166 verifyEvent.keyCode = event.keyCode; | |
| 5167 verifyEvent.stateMask = event.stateMask; | |
| 5168 verifyEvent.doit = true; | |
| 5169 notifyListeners(VerifyKey, verifyEvent); | |
| 5170 if (verifyEvent.doit) { | |
| 5171 handleKey(event); | |
| 5172 } | |
| 5173 } | |
| 5174 /** | |
| 5175 * Update the Selection Clipboard. | |
| 5176 * | |
| 5177 * @param event keyboard event | |
| 5178 */ | |
| 5179 void handleKeyUp(Event event) { | |
| 5180 if (clipboardSelection !is null) { | |
| 5181 if (clipboardSelection.x !is selection.x || clipboardSelection.y !is selection.y) { | |
| 5182 try { | |
| 5183 if (selection.y - selection.x > 0) { | |
| 5184 setClipboardContent(selection.x, selection.y - selection.x, DND.SELECTION_CLIPBOARD); | |
| 5185 } | |
| 5186 } catch (DWTError error) { | |
| 5187 // Copy to clipboard failed. This happens when another application | |
| 5188 // is accessing the clipboard while we copy. Ignore the error. | |
| 5189 // Fixes 1GDQAVN | |
| 5190 // Rethrow all other errors. Fixes bug 17578. | |
| 5191 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 5192 throw error; | |
| 5193 } | |
| 5194 } | |
| 5195 } | |
| 5196 } | |
| 5197 clipboardSelection = null; | |
| 5198 } | |
| 5199 /** | |
| 5200 * Updates the caret location and selection if mouse button 1 has been | |
| 5201 * pressed. | |
| 5202 */ | |
| 5203 void handleMouseDown(Event event) { | |
| 5204 //force focus (object support) | |
| 5205 forceFocus(); | |
| 5206 | |
| 5207 //drag detect | |
| 5208 if (dragDetect_ && checkDragDetect(event)) return; | |
| 5209 | |
| 5210 //paste clipboard selection | |
| 5211 if (event.button is 2) { | |
| 5212 auto o = cast(ArrayWrapperString)getClipboardContent(DND.SELECTION_CLIPBOARD); | |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
5213 String text = o.array; |
| 155 | 5214 if (text !is null && text.length > 0) { |
| 5215 // position cursor | |
| 5216 doMouseLocationChange(event.x, event.y, false); | |
| 5217 // insert text | |
| 5218 Event e = new Event(); | |
| 5219 e.start = selection.x; | |
| 5220 e.end = selection.y; | |
| 5221 e.text = getModelDelimitedText(text); | |
| 5222 sendKeyEvent(e); | |
| 5223 } | |
| 5224 } | |
| 5225 | |
| 5226 //set selection | |
| 5227 if ((event.button !is 1) || (IS_CARBON && (event.stateMask & DWT.MOD4) !is 0)) { | |
| 5228 return; | |
| 5229 } | |
| 5230 clickCount = event.count; | |
| 5231 if (clickCount is 1) { | |
| 5232 bool select = (event.stateMask & DWT.MOD2) !is 0; | |
| 5233 doMouseLocationChange(event.x, event.y, select); | |
| 5234 } else { | |
| 5235 if (doubleClickEnabled) { | |
| 5236 clearSelection(false); | |
| 5237 int offset = getOffsetAtPoint(event.x, event.y); | |
| 5238 int lineIndex = content.getLineAtOffset(offset); | |
| 5239 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 5240 int lineEnd = content.getCharCount(); | |
| 5241 if (lineIndex + 1 < content.getLineCount()) { | |
| 5242 lineEnd = content.getOffsetAtLine(lineIndex + 1); | |
| 5243 } | |
| 5244 int start, end; | |
| 5245 if ((clickCount & 1) is 0) { | |
| 5246 start = Math.max(0, getWordPrevious(offset, DWT.MOVEMENT_WORD_START)); | |
| 5247 end = Math.min(content.getCharCount(), getWordNext(start, DWT.MOVEMENT_WORD_END)); | |
| 5248 } else { | |
| 5249 start = lineOffset; | |
| 5250 end = lineEnd; | |
| 5251 } | |
| 5252 selection.x = selection.y = start; | |
| 5253 selectionAnchor = -1; | |
| 5254 caretOffset = end; | |
| 5255 showCaret(); | |
| 5256 doMouseSelection(); | |
| 5257 doubleClickSelection = new Point(selection.x, selection.y); | |
| 5258 } | |
| 5259 } | |
| 5260 } | |
| 5261 /** | |
| 5262 * Updates the caret location and selection if mouse button 1 is pressed | |
| 5263 * during the mouse move. | |
| 5264 */ | |
| 5265 void handleMouseMove(Event event) { | |
| 5266 if (clickCount is 0) return; | |
| 5267 doMouseLocationChange(event.x, event.y, true); | |
| 5268 update(); | |
| 5269 doAutoScroll(event); | |
| 5270 } | |
| 5271 /** | |
| 5272 * Autoscrolling ends when the mouse button is released. | |
| 5273 */ | |
| 5274 void handleMouseUp(Event event) { | |
| 5275 clickCount = 0; | |
| 5276 endAutoScroll(); | |
| 5277 if (event.button is 1) { | |
| 5278 try { | |
| 5279 if (selection.y - selection.x > 0) { | |
| 5280 setClipboardContent(selection.x, selection.y - selection.x, DND.SELECTION_CLIPBOARD); | |
| 5281 } | |
| 5282 } catch (DWTError error) { | |
| 5283 // Copy to clipboard failed. This happens when another application | |
| 5284 // is accessing the clipboard while we copy. Ignore the error. | |
| 5285 // Fixes 1GDQAVN | |
| 5286 // Rethrow all other errors. Fixes bug 17578. | |
| 5287 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 5288 throw error; | |
| 5289 } | |
| 5290 } | |
| 5291 } | |
| 5292 } | |
| 5293 /** | |
| 5294 * Renders the invalidated area specified in the paint event. | |
| 5295 * | |
| 5296 * @param event paint event | |
| 5297 */ | |
| 5298 void handlePaint(Event event) { | |
| 5299 if (event.width is 0 || event.height is 0) return; | |
| 5300 if (clientAreaWidth is 0 || clientAreaHeight is 0) return; | |
| 5301 | |
| 5302 int startLine = getLineIndex(event.y); | |
| 5303 int y = getLinePixel(startLine); | |
| 5304 int endY = event.y + event.height; | |
| 5305 GC gc = event.gc; | |
| 5306 Color background = getBackground(); | |
| 5307 Color foreground = getForeground(); | |
| 5308 if (endY > 0) { | |
| 5309 int lineCount = isSingleLine() ? 1 : content.getLineCount(); | |
| 5310 int x = leftMargin - horizontalScrollOffset; | |
| 5311 for (int i = startLine; y < endY && i < lineCount; i++) { | |
| 5312 y += renderer.drawLine(i, x, y, gc, background, foreground); | |
| 5313 } | |
| 5314 if (y < endY) { | |
| 5315 gc.setBackground(background); | |
| 5316 drawBackground(gc, 0, y, clientAreaWidth, endY - y); | |
| 5317 } | |
| 5318 } | |
| 5319 // fill the margin background | |
| 5320 gc.setBackground(background); | |
| 5321 if (topMargin > 0) { | |
| 5322 drawBackground(gc, 0, 0, clientAreaWidth, topMargin); | |
| 5323 } | |
| 5324 if (bottomMargin > 0) { | |
| 5325 drawBackground(gc, 0, clientAreaHeight - bottomMargin, clientAreaWidth, bottomMargin); | |
| 5326 } | |
| 5327 if (leftMargin > 0) { | |
| 5328 drawBackground(gc, 0, 0, leftMargin, clientAreaHeight); | |
| 5329 } | |
| 5330 if (rightMargin > 0) { | |
| 5331 drawBackground(gc, clientAreaWidth - rightMargin, 0, rightMargin, clientAreaHeight); | |
| 5332 } | |
| 5333 } | |
| 5334 /** | |
| 5335 * Recalculates the scroll bars. Rewraps all lines when in word | |
| 5336 * wrap mode. | |
| 5337 * | |
| 5338 * @param event resize event | |
| 5339 */ | |
| 5340 void handleResize(Event event) { | |
| 5341 int oldHeight = clientAreaHeight; | |
| 5342 int oldWidth = clientAreaWidth; | |
| 5343 Rectangle clientArea = getClientArea(); | |
| 5344 clientAreaHeight = clientArea.height; | |
| 5345 clientAreaWidth = clientArea.width; | |
| 5346 /* Redraw the old or new right/bottom margin if needed */ | |
| 5347 if (oldWidth !is clientAreaWidth) { | |
| 5348 if (rightMargin > 0) { | |
| 5349 int x = (oldWidth < clientAreaWidth ? oldWidth : clientAreaWidth) - rightMargin; | |
| 5350 super.redraw(x, 0, rightMargin, oldHeight, false); | |
| 5351 } | |
| 5352 } | |
| 5353 if (oldHeight !is clientAreaHeight) { | |
| 5354 if (bottomMargin > 0) { | |
| 5355 int y = (oldHeight < clientAreaHeight ? oldHeight : clientAreaHeight) - bottomMargin; | |
| 5356 super.redraw(0, y, oldWidth, bottomMargin, false); | |
| 5357 } | |
| 5358 } | |
| 5359 if (wordWrap) { | |
| 5360 if (oldWidth !is clientAreaWidth) { | |
| 5361 renderer.reset(0, content.getLineCount()); | |
| 5362 verticalScrollOffset = -1; | |
| 5363 renderer.calculateIdle(); | |
| 5364 super.redraw(); | |
| 5365 } | |
| 5366 if (oldHeight !is clientAreaHeight) { | |
| 5367 if (oldHeight is 0) topIndexY = 0; | |
| 5368 setScrollBars(true); | |
| 5369 } | |
| 5370 setCaretLocation(); | |
| 5371 } else { | |
| 5372 renderer.calculateClientArea(); | |
| 5373 setScrollBars(true); | |
| 5374 claimRightFreeSpace(); | |
| 5375 // StyledText allows any value for horizontalScrollOffset when clientArea is zero | |
| 5376 // in setHorizontalPixel() and setHorisontalOffset(). Fixes bug 168429. | |
| 5377 if (clientAreaWidth !is 0) { | |
| 5378 ScrollBar horizontalBar = getHorizontalBar(); | |
| 5379 if (horizontalBar !is null && horizontalBar.getVisible()) { | |
| 5380 if (horizontalScrollOffset !is horizontalBar.getSelection()) { | |
| 5381 horizontalBar.setSelection(horizontalScrollOffset); | |
| 5382 horizontalScrollOffset = horizontalBar.getSelection(); | |
| 5383 } | |
| 5384 } | |
| 5385 } | |
| 5386 } | |
| 5387 claimBottomFreeSpace(); | |
| 5388 //TODO FIX TOP INDEX DURING RESIZE | |
| 5389 // if (oldHeight !is clientAreaHeight || wordWrap) { | |
| 5390 // calculateTopIndex(0); | |
| 5391 // } | |
| 5392 } | |
| 5393 /** | |
| 5394 * Updates the caret position and selection and the scroll bars to reflect | |
| 5395 * the content change. | |
| 5396 */ | |
| 5397 void handleTextChanged(TextChangedEvent event) { | |
| 5398 int firstLine = content.getLineAtOffset(lastTextChangeStart); | |
| 5399 resetCache(firstLine, 0); | |
| 5400 if (!isFixedLineHeight() && topIndex > firstLine) { | |
| 5401 topIndex = firstLine; | |
| 5402 topIndexY = 0; | |
| 5403 super.redraw(); | |
| 5404 } else { | |
| 5405 int lastLine = firstLine + lastTextChangeNewLineCount; | |
| 5406 int firstLineTop = getLinePixel(firstLine); | |
| 5407 int newLastLineBottom = getLinePixel(lastLine + 1); | |
| 5408 if (lastLineBottom !is newLastLineBottom) { | |
| 5409 super.redraw(); | |
| 5410 if (wordWrap) setCaretLocation(); | |
| 5411 } else { | |
| 5412 super.redraw(0, firstLineTop, clientAreaWidth, newLastLineBottom - firstLineTop, false); | |
| 5413 redrawLinesBullet(renderer.redrawLines); | |
| 5414 } | |
| 5415 } | |
| 5416 renderer.redrawLines = null; | |
| 5417 // update selection/caret location after styles have been changed. | |
| 5418 // otherwise any text measuring could be incorrect | |
| 5419 // | |
| 5420 // also, this needs to be done after all scrolling. Otherwise, | |
| 5421 // selection redraw would be flushed during scroll which is wrong. | |
| 5422 // in some cases new text would be drawn in scroll source area even | |
| 5423 // though the intent is to scroll it. | |
| 5424 updateSelection(lastTextChangeStart, lastTextChangeReplaceCharCount, lastTextChangeNewCharCount); | |
| 5425 if (lastTextChangeReplaceLineCount > 0 || wordWrap) { | |
| 5426 claimBottomFreeSpace(); | |
| 5427 } | |
| 5428 if (lastTextChangeReplaceCharCount > 0) { | |
| 5429 claimRightFreeSpace(); | |
| 5430 } | |
| 5431 } | |
| 5432 /** | |
| 5433 * Updates the screen to reflect a pending content change. | |
| 5434 * | |
| 5435 * @param event .start the start offset of the change | |
| 5436 * @param event .newText text that is going to be inserted or empty String | |
| 5437 * if no text will be inserted | |
| 5438 * @param event .replaceCharCount length of text that is going to be replaced | |
| 5439 * @param event .newCharCount length of text that is going to be inserted | |
| 5440 * @param event .replaceLineCount number of lines that are going to be replaced | |
| 5441 * @param event .newLineCount number of new lines that are going to be inserted | |
| 5442 */ | |
| 5443 void handleTextChanging(TextChangingEvent event) { | |
| 5444 if (event.replaceCharCount < 0) { | |
| 5445 event.start += event.replaceCharCount; | |
| 5446 event.replaceCharCount *= -1; | |
| 5447 } | |
| 5448 lastTextChangeStart = event.start; | |
| 5449 lastTextChangeNewLineCount = event.newLineCount; | |
| 5450 lastTextChangeNewCharCount = event.newCharCount; | |
| 5451 lastTextChangeReplaceLineCount = event.replaceLineCount; | |
| 5452 lastTextChangeReplaceCharCount = event.replaceCharCount; | |
| 5453 int lineIndex = content.getLineAtOffset(event.start); | |
| 5454 int srcY = getLinePixel(lineIndex + event.replaceLineCount + 1); | |
| 5455 int destY = getLinePixel(lineIndex + 1) + event.newLineCount * renderer.getLineHeight(); | |
| 5456 lastLineBottom = destY; | |
| 5457 if (srcY < 0 && destY < 0) { | |
| 5458 lastLineBottom += srcY - destY; | |
| 5459 verticalScrollOffset += destY - srcY; | |
| 5460 calculateTopIndex(destY - srcY); | |
| 5461 setScrollBars(true); | |
| 5462 } else { | |
| 5463 scrollText(srcY, destY); | |
| 5464 } | |
| 5465 | |
| 5466 renderer.textChanging(event); | |
| 5467 | |
| 5468 // Update the caret offset if it is greater than the length of the content. | |
| 5469 // This is necessary since style range API may be called between the | |
| 5470 // handleTextChanging and handleTextChanged events and this API sets the | |
| 5471 // caretOffset. | |
| 5472 int newEndOfText = content.getCharCount() - event.replaceCharCount + event.newCharCount; | |
| 5473 if (caretOffset > newEndOfText) caretOffset = newEndOfText; | |
| 5474 } | |
| 5475 /** | |
| 5476 * Called when the widget content is set programmatically, overwriting | |
| 5477 * the old content. Resets the caret position, selection and scroll offsets. | |
| 5478 * Recalculates the content width and scroll bars. Redraws the widget. | |
| 5479 * | |
| 5480 * @param event text change event. | |
| 5481 */ | |
| 5482 void handleTextSet(TextChangedEvent event) { | |
| 5483 reset(); | |
| 5484 } | |
| 5485 /** | |
| 5486 * Called when a traversal key is pressed. | |
| 5487 * Allow tab next traversal to occur when the widget is in single | |
| 5488 * line mode or in multi line and non-editable mode . | |
| 5489 * When in editable multi line mode we want to prevent the tab | |
| 5490 * traversal and receive the tab key event instead. | |
| 5491 * | |
| 5492 * @param event the event | |
| 5493 */ | |
| 5494 void handleTraverse(Event event) { | |
| 5495 switch (event.detail) { | |
| 5496 case DWT.TRAVERSE_ESCAPE: | |
| 5497 case DWT.TRAVERSE_PAGE_NEXT: | |
| 5498 case DWT.TRAVERSE_PAGE_PREVIOUS: | |
| 5499 event.doit = true; | |
| 5500 break; | |
| 5501 case DWT.TRAVERSE_RETURN: | |
| 5502 case DWT.TRAVERSE_TAB_NEXT: | |
| 5503 case DWT.TRAVERSE_TAB_PREVIOUS: | |
| 5504 if ((getStyle() & DWT.SINGLE) !is 0) { | |
| 5505 event.doit = true; | |
| 5506 } else { | |
| 5507 if (!editable || (event.stateMask & DWT.MODIFIER_MASK) !is 0) { | |
| 5508 event.doit = true; | |
| 5509 } | |
| 5510 } | |
| 5511 break; | |
| 5512 default: | |
| 5513 } | |
| 5514 } | |
| 5515 /** | |
| 5516 * Scrolls the widget vertically. | |
| 5517 */ | |
| 5518 void handleVerticalScroll(Event event) { | |
| 5519 int scrollPixel = getVerticalBar().getSelection() - getVerticalScrollOffset(); | |
| 5520 scrollVertical(scrollPixel, false); | |
| 5521 } | |
| 5522 /** | |
| 5523 * Add accessibility support for the widget. | |
| 5524 */ | |
| 5525 void initializeAccessible() { | |
| 5526 final Accessible accessible = getAccessible(); | |
| 5527 accessible.addAccessibleListener(new class() AccessibleAdapter { | |
| 5528 public void getName (AccessibleEvent e) { | |
|
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|
5529 String name = null; |
| 155 | 5530 Label label = getAssociatedLabel (); |
| 5531 if (label !is null) { | |
| 5532 name = stripMnemonic (label.getText()); | |
| 5533 } | |
| 5534 e.result = name; | |
| 5535 } | |
| 5536 public void getHelp(AccessibleEvent e) { | |
| 5537 e.result = getToolTipText(); | |
| 5538 } | |
| 5539 public void getKeyboardShortcut(AccessibleEvent e) { | |
|
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|
5540 String shortcut = null; |
| 155 | 5541 Label label = getAssociatedLabel (); |
| 5542 if (label !is null) { | |
|
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|
5543 String text = label.getText (); |
| 155 | 5544 if (text !is null) { |
| 5545 dchar mnemonic = _findMnemonic (text); | |
| 5546 if (mnemonic !is '\0') { | |
| 5547 shortcut = "Alt+"~tango.text.convert.Utf.toString( [mnemonic] ); //$NON-NLS-1$ | |
| 5548 } | |
| 5549 } | |
| 5550 } | |
| 5551 e.result = shortcut; | |
| 5552 } | |
| 5553 }); | |
| 5554 accessible.addAccessibleTextListener(new class() AccessibleTextAdapter { | |
| 5555 public void getCaretOffset(AccessibleTextEvent e) { | |
| 5556 e.offset = this.outer.getCaretOffset(); | |
| 5557 } | |
| 5558 public void getSelectionRange(AccessibleTextEvent e) { | |
| 5559 Point selection = this.outer.getSelectionRange(); | |
| 5560 e.offset = selection.x; | |
| 5561 e.length = selection.y; | |
| 5562 } | |
| 5563 }); | |
| 5564 accessible.addAccessibleControlListener(new class() AccessibleControlAdapter { | |
| 5565 public void getRole(AccessibleControlEvent e) { | |
| 5566 e.detail = ACC.ROLE_TEXT; | |
| 5567 } | |
| 5568 public void getState(AccessibleControlEvent e) { | |
| 5569 int state = 0; | |
| 5570 if (isEnabled()) state |= ACC.STATE_FOCUSABLE; | |
| 5571 if (isFocusControl()) state |= ACC.STATE_FOCUSED; | |
| 5572 if (!isVisible()) state |= ACC.STATE_INVISIBLE; | |
| 5573 if (!getEditable()) state |= ACC.STATE_READONLY; | |
| 5574 e.detail = state; | |
| 5575 } | |
| 5576 public void getValue(AccessibleControlEvent e) { | |
| 5577 e.result = this.outer.getText(); | |
| 5578 } | |
| 5579 }); | |
| 5580 addListener(DWT.FocusIn, new class(accessible) Listener { | |
| 5581 Accessible acc; | |
| 5582 this( Accessible acc ){ this.acc = acc; } | |
| 5583 public void handleEvent(Event event) { | |
| 5584 acc.setFocus(ACC.CHILDID_SELF); | |
| 5585 } | |
| 5586 }); | |
| 5587 } | |
| 5588 /* | |
| 5589 * Return the Label immediately preceding the receiver in the z-order, | |
| 5590 * or null if none. | |
| 5591 */ | |
| 5592 Label getAssociatedLabel () { | |
| 5593 Control[] siblings = getParent ().getChildren (); | |
| 5594 for (int i = 0; i < siblings.length; i++) { | |
| 5595 if (siblings [i] is this) { | |
| 5596 if (i > 0 && ( null !is cast(Label)siblings [i-1])) { | |
| 5597 return cast(Label) siblings [i-1]; | |
| 5598 } | |
| 5599 } | |
| 5600 } | |
| 5601 return null; | |
| 5602 } | |
|
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|
5603 String stripMnemonic (String string) { |
| 155 | 5604 int index = 0; |
| 5605 int length_ = string.length; | |
| 5606 do { | |
| 5607 while ((index < length_) && (string[index] !is '&')) index++; | |
| 5608 if (++index >= length_) return string; | |
| 5609 if (string[index] !is '&') { | |
| 5610 return string[0 .. index-1] ~ string[index .. length_]; | |
| 5611 } | |
| 5612 index++; | |
| 5613 } while (index < length_); | |
| 5614 return string; | |
| 5615 } | |
| 5616 /* | |
| 5617 * Return the lowercase of the first non-'&' character following | |
| 5618 * an '&' character in the given string. If there are no '&' | |
| 5619 * characters in the given string, return '\0'. | |
| 5620 */ | |
|
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|
5621 dchar _findMnemonic (String string) { |
| 155 | 5622 if (string is null) return '\0'; |
| 5623 int index = 0; | |
| 5624 int length_ = string.length; | |
| 5625 do { | |
| 5626 while (index < length_ && string[index] !is '&') index++; | |
| 5627 if (++index >= length_) return '\0'; | |
| 178 | 5628 if (string[index] !is '&') return CharacterToLower(firstCodePoint( string[index .. $ ] )); |
| 155 | 5629 index++; |
| 5630 } while (index < length_); | |
| 5631 return '\0'; | |
| 5632 } | |
| 5633 /** | |
| 5634 * Executes the action. | |
| 5635 * | |
| 5636 * @param action one of the actions defined in ST.java | |
| 5637 */ | |
| 5638 public void invokeAction(int action) { | |
| 5639 checkWidget(); | |
| 5640 updateCaretDirection = true; | |
| 5641 switch (action) { | |
| 5642 // Navigation | |
| 5643 case ST.LINE_UP: | |
| 5644 doLineUp(false); | |
| 5645 clearSelection(true); | |
| 5646 break; | |
| 5647 case ST.LINE_DOWN: | |
| 5648 doLineDown(false); | |
| 5649 clearSelection(true); | |
| 5650 break; | |
| 5651 case ST.LINE_START: | |
| 5652 doLineStart(); | |
| 5653 clearSelection(true); | |
| 5654 break; | |
| 5655 case ST.LINE_END: | |
| 5656 doLineEnd(); | |
| 5657 clearSelection(true); | |
| 5658 break; | |
| 5659 case ST.COLUMN_PREVIOUS: | |
| 5660 doCursorPrevious(); | |
| 5661 clearSelection(true); | |
| 5662 break; | |
| 5663 case ST.COLUMN_NEXT: | |
| 5664 doCursorNext(); | |
| 5665 clearSelection(true); | |
| 5666 break; | |
| 5667 case ST.PAGE_UP: | |
| 5668 doPageUp(false, -1); | |
| 5669 clearSelection(true); | |
| 5670 break; | |
| 5671 case ST.PAGE_DOWN: | |
| 5672 doPageDown(false, -1); | |
| 5673 clearSelection(true); | |
| 5674 break; | |
| 5675 case ST.WORD_PREVIOUS: | |
| 5676 doWordPrevious(); | |
| 5677 clearSelection(true); | |
| 5678 break; | |
| 5679 case ST.WORD_NEXT: | |
| 5680 doWordNext(); | |
| 5681 clearSelection(true); | |
| 5682 break; | |
| 5683 case ST.TEXT_START: | |
| 5684 doContentStart(); | |
| 5685 clearSelection(true); | |
| 5686 break; | |
| 5687 case ST.TEXT_END: | |
| 5688 doContentEnd(); | |
| 5689 clearSelection(true); | |
| 5690 break; | |
| 5691 case ST.WINDOW_START: | |
| 5692 doPageStart(); | |
| 5693 clearSelection(true); | |
| 5694 break; | |
| 5695 case ST.WINDOW_END: | |
| 5696 doPageEnd(); | |
| 5697 clearSelection(true); | |
| 5698 break; | |
| 5699 // Selection | |
| 5700 case ST.SELECT_LINE_UP: | |
| 5701 doSelectionLineUp(); | |
| 5702 break; | |
| 5703 case ST.SELECT_ALL: | |
| 5704 selectAll(); | |
| 5705 break; | |
| 5706 case ST.SELECT_LINE_DOWN: | |
| 5707 doSelectionLineDown(); | |
| 5708 break; | |
| 5709 case ST.SELECT_LINE_START: | |
| 5710 doLineStart(); | |
| 5711 doSelection(ST.COLUMN_PREVIOUS); | |
| 5712 break; | |
| 5713 case ST.SELECT_LINE_END: | |
| 5714 doLineEnd(); | |
| 5715 doSelection(ST.COLUMN_NEXT); | |
| 5716 break; | |
| 5717 case ST.SELECT_COLUMN_PREVIOUS: | |
| 5718 doSelectionCursorPrevious(); | |
| 5719 doSelection(ST.COLUMN_PREVIOUS); | |
| 5720 break; | |
| 5721 case ST.SELECT_COLUMN_NEXT: | |
| 5722 doSelectionCursorNext(); | |
| 5723 doSelection(ST.COLUMN_NEXT); | |
| 5724 break; | |
| 5725 case ST.SELECT_PAGE_UP: | |
| 5726 doSelectionPageUp(-1); | |
| 5727 break; | |
| 5728 case ST.SELECT_PAGE_DOWN: | |
| 5729 doSelectionPageDown(-1); | |
| 5730 break; | |
| 5731 case ST.SELECT_WORD_PREVIOUS: | |
| 5732 doSelectionWordPrevious(); | |
| 5733 doSelection(ST.COLUMN_PREVIOUS); | |
| 5734 break; | |
| 5735 case ST.SELECT_WORD_NEXT: | |
| 5736 doSelectionWordNext(); | |
| 5737 doSelection(ST.COLUMN_NEXT); | |
| 5738 break; | |
| 5739 case ST.SELECT_TEXT_START: | |
| 5740 doContentStart(); | |
| 5741 doSelection(ST.COLUMN_PREVIOUS); | |
| 5742 break; | |
| 5743 case ST.SELECT_TEXT_END: | |
| 5744 doContentEnd(); | |
| 5745 doSelection(ST.COLUMN_NEXT); | |
| 5746 break; | |
| 5747 case ST.SELECT_WINDOW_START: | |
| 5748 doPageStart(); | |
| 5749 doSelection(ST.COLUMN_PREVIOUS); | |
| 5750 break; | |
| 5751 case ST.SELECT_WINDOW_END: | |
| 5752 doPageEnd(); | |
| 5753 doSelection(ST.COLUMN_NEXT); | |
| 5754 break; | |
| 5755 // Modification | |
| 5756 case ST.CUT: | |
| 5757 cut(); | |
| 5758 break; | |
| 5759 case ST.COPY: | |
| 5760 copy(); | |
| 5761 break; | |
| 5762 case ST.PASTE: | |
| 5763 paste(); | |
| 5764 break; | |
| 5765 case ST.DELETE_PREVIOUS: | |
| 5766 doBackspace(); | |
| 5767 break; | |
| 5768 case ST.DELETE_NEXT: | |
| 5769 doDelete(); | |
| 5770 break; | |
| 5771 case ST.DELETE_WORD_PREVIOUS: | |
| 5772 doDeleteWordPrevious(); | |
| 5773 break; | |
| 5774 case ST.DELETE_WORD_NEXT: | |
| 5775 doDeleteWordNext(); | |
| 5776 break; | |
| 5777 // Miscellaneous | |
| 5778 case ST.TOGGLE_OVERWRITE: | |
| 5779 overwrite = !overwrite; // toggle insert/overwrite mode | |
| 5780 break; | |
| 5781 default: | |
| 5782 } | |
| 5783 } | |
| 5784 /** | |
| 5785 * Temporary until DWT provides this | |
| 5786 */ | |
| 5787 bool isBidi() { | |
| 5788 return IS_GTK || BidiUtil.isBidiPlatform() || isMirrored_; | |
| 5789 } | |
| 5790 bool isBidiCaret() { | |
| 5791 return BidiUtil.isBidiPlatform(); | |
| 5792 } | |
| 5793 bool isFixedLineHeight() { | |
| 5794 return fixedLineHeight; | |
| 5795 } | |
| 5796 /** | |
| 5797 * Returns whether the given offset is inside a multi byte line delimiter. | |
| 5798 * Example: | |
| 5799 * "Line1\r\n" isLineDelimiter(5) is false but isLineDelimiter(6) is true | |
| 5800 * | |
| 5801 * @return true if the given offset is inside a multi byte line delimiter. | |
| 5802 * false if the given offset is before or after a line delimiter. | |
| 5803 */ | |
| 5804 bool isLineDelimiter(int offset) { | |
| 5805 int line = content.getLineAtOffset(offset); | |
| 5806 int lineOffset = content.getOffsetAtLine(line); | |
| 5807 int offsetInLine = offset - lineOffset; | |
| 5808 // offsetInLine will be greater than line length if the line | |
| 5809 // delimiter is longer than one character and the offset is set | |
| 5810 // in between parts of the line delimiter. | |
| 5811 return offsetInLine > content.getLine(line).length; | |
| 5812 } | |
| 5813 /** | |
| 5814 * Returns whether the widget is mirrored (right oriented/right to left | |
| 5815 * writing order). | |
| 5816 * | |
| 5817 * @return isMirrored true=the widget is right oriented, false=the widget | |
| 5818 * is left oriented | |
| 5819 */ | |
| 5820 bool isMirrored() { | |
| 5821 return isMirrored_; | |
| 5822 } | |
| 5823 /** | |
| 5824 * Returns whether the widget can have only one line. | |
| 5825 * | |
| 5826 * @return true if widget can have only one line, false if widget can have | |
| 5827 * multiple lines | |
| 5828 */ | |
| 5829 bool isSingleLine() { | |
| 5830 return (getStyle() & DWT.SINGLE) !is 0; | |
| 5831 } | |
| 5832 /** | |
| 5833 * Sends the specified verify event, replace/insert text as defined by | |
| 5834 * the event and send a modify event. | |
| 5835 * | |
| 5836 * @param event the text change event. | |
| 5837 * <ul> | |
| 5838 * <li>event.start - the replace start offset</li> | |
| 5839 * <li>event.end - the replace end offset</li> | |
| 5840 * <li>event.text - the new text</li> | |
| 5841 * </ul> | |
| 5842 * @param updateCaret whether or not he caret should be set behind | |
| 5843 * the new text | |
| 5844 */ | |
| 5845 void modifyContent(Event event, bool updateCaret) { | |
| 5846 event.doit = true; | |
| 5847 notifyListeners(DWT.Verify, event); | |
| 5848 if (event.doit) { | |
| 5849 StyledTextEvent styledTextEvent = null; | |
| 5850 int replacedLength = event.end - event.start; | |
| 5851 if (isListening(ExtendedModify)) { | |
| 5852 styledTextEvent = new StyledTextEvent(content); | |
| 5853 styledTextEvent.start = event.start; | |
| 5854 styledTextEvent.end = event.start + event.text.length; | |
| 5855 styledTextEvent.text = content.getTextRange(event.start, replacedLength); | |
| 5856 } | |
| 5857 if (updateCaret) { | |
| 5858 //Fix advancing flag for delete/backspace key on direction boundary | |
| 5859 if (event.text.length is 0) { | |
| 5860 int lineIndex = content.getLineAtOffset(event.start); | |
| 5861 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 5862 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 5863 int levelStart = layout.getLevel(event.start - lineOffset); | |
| 5864 int lineIndexEnd = content.getLineAtOffset(event.end); | |
| 5865 if (lineIndex !is lineIndexEnd) { | |
| 5866 renderer.disposeTextLayout(layout); | |
| 5867 lineOffset = content.getOffsetAtLine(lineIndexEnd); | |
| 5868 layout = renderer.getTextLayout(lineIndexEnd); | |
| 5869 } | |
| 5870 int levelEnd = layout.getLevel(event.end - lineOffset); | |
| 5871 renderer.disposeTextLayout(layout); | |
| 5872 if (levelStart !is levelEnd) { | |
| 5873 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 5874 } else { | |
| 5875 caretAlignment = OFFSET_LEADING; | |
| 5876 } | |
| 5877 } | |
| 5878 } | |
| 5879 content.replaceTextRange(event.start, replacedLength, event.text); | |
| 5880 // set the caret position prior to sending the modify event. | |
| 5881 // fixes 1GBB8NJ | |
| 5882 if (updateCaret) { | |
| 5883 // always update the caret location. fixes 1G8FODP | |
| 5884 setSelection(event.start + event.text.length, 0, true); | |
| 5885 showCaret(); | |
| 5886 } | |
| 5887 sendModifyEvent(event); | |
| 5888 if (isListening(ExtendedModify)) { | |
| 5889 notifyListeners(ExtendedModify, styledTextEvent); | |
| 5890 } | |
| 5891 } | |
| 5892 } | |
| 5893 void paintObject(GC gc, int x, int y, int ascent, int descent, StyleRange style, Bullet bullet, int bulletIndex) { | |
| 5894 if (isListening(PaintObject)) { | |
| 5895 StyledTextEvent event = new StyledTextEvent (content) ; | |
| 5896 event.gc = gc; | |
| 5897 event.x = x; | |
| 5898 event.y = y; | |
| 5899 event.ascent = ascent; | |
| 5900 event.descent = descent; | |
| 5901 event.style = style; | |
| 5902 event.bullet = bullet; | |
| 5903 event.bulletIndex = bulletIndex; | |
| 5904 notifyListeners(PaintObject, event); | |
| 5905 } | |
| 5906 } | |
| 5907 /** | |
| 5908 * Replaces the selection with the text on the <code>DND.CLIPBOARD</code> | |
| 5909 * clipboard or, if there is no selection, inserts the text at the current | |
| 5910 * caret offset. If the widget has the DWT.SINGLE style and the | |
| 5911 * clipboard text contains more than one line, only the first line without | |
| 5912 * line delimiters is inserted in the widget. | |
| 5913 * | |
| 5914 * @exception DWTException <ul> | |
| 5915 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 5916 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 5917 * </ul> | |
| 5918 */ | |
| 5919 public void paste(){ | |
| 5920 checkWidget(); | |
|
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197
diff
changeset
|
5921 String text = (cast(ArrayWrapperString) getClipboardContent(DND.CLIPBOARD)).array; |
| 155 | 5922 if (text !is null && text.length > 0) { |
| 5923 Event event = new Event(); | |
| 5924 event.start = selection.x; | |
| 5925 event.end = selection.y; | |
| 5926 event.text = getModelDelimitedText(text); | |
| 5927 sendKeyEvent(event); | |
| 5928 } | |
| 5929 } | |
| 5930 /** | |
| 5931 * Prints the widget's text to the default printer. | |
| 5932 * | |
| 5933 * @exception DWTException <ul> | |
| 5934 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 5935 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 5936 * </ul> | |
| 5937 */ | |
| 5938 public void print() { | |
| 5939 checkWidget(); | |
| 5940 Printer printer = new Printer(); | |
| 5941 StyledTextPrintOptions options = new StyledTextPrintOptions(); | |
| 5942 options.printTextForeground = true; | |
| 5943 options.printTextBackground = true; | |
| 5944 options.printTextFontStyle = true; | |
| 5945 options.printLineBackground = true; | |
| 5946 (new Printing(this, printer, options)).run(); | |
| 5947 printer.dispose(); | |
| 5948 } | |
| 5949 /** | |
| 5950 * Returns a runnable that will print the widget's text | |
| 5951 * to the specified printer. | |
| 5952 * <p> | |
| 5953 * The runnable may be run in a non-UI thread. | |
| 5954 * </p> | |
| 5955 * | |
| 5956 * @param printer the printer to print to | |
| 5957 * @exception DWTException <ul> | |
| 5958 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 5959 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 5960 * </ul> | |
| 5961 * @exception IllegalArgumentException <ul> | |
| 5962 * <li>ERROR_NULL_ARGUMENT when printer is null</li> | |
| 5963 * </ul> | |
| 5964 */ | |
| 5965 public Runnable print(Printer printer) { | |
| 5966 checkWidget(); | |
| 5967 if (printer is null) { | |
| 5968 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 5969 } | |
| 5970 StyledTextPrintOptions options = new StyledTextPrintOptions(); | |
| 5971 options.printTextForeground = true; | |
| 5972 options.printTextBackground = true; | |
| 5973 options.printTextFontStyle = true; | |
| 5974 options.printLineBackground = true; | |
| 5975 return print(printer, options); | |
| 5976 } | |
| 5977 /** | |
| 5978 * Returns a runnable that will print the widget's text | |
| 5979 * to the specified printer. | |
| 5980 * <p> | |
| 5981 * The runnable may be run in a non-UI thread. | |
| 5982 * </p> | |
| 5983 * | |
| 5984 * @param printer the printer to print to | |
| 5985 * @param options print options to use during printing | |
| 5986 * @exception DWTException <ul> | |
| 5987 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 5988 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 5989 * </ul> | |
| 5990 * @exception IllegalArgumentException <ul> | |
| 5991 * <li>ERROR_NULL_ARGUMENT when printer or options is null</li> | |
| 5992 * </ul> | |
| 5993 * @since 2.1 | |
| 5994 */ | |
| 5995 public Runnable print(Printer printer, StyledTextPrintOptions options) { | |
| 5996 checkWidget(); | |
| 5997 if (printer is null || options is null) { | |
| 5998 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 5999 } | |
| 6000 return new Printing(this, printer, options); | |
| 6001 } | |
| 6002 /** | |
| 6003 * Causes the entire bounds of the receiver to be marked | |
| 6004 * as needing to be redrawn. The next time a paint request | |
| 6005 * is processed, the control will be completely painted. | |
| 6006 * <p> | |
| 6007 * Recalculates the content width for all lines in the bounds. | |
| 6008 * When a <code>LineStyleListener</code> is used a redraw call | |
| 6009 * is the only notification to the widget that styles have changed | |
| 6010 * and that the content width may have changed. | |
| 6011 * </p> | |
| 6012 * | |
| 6013 * @exception DWTException <ul> | |
| 6014 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6015 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6016 * </ul> | |
| 6017 * | |
| 6018 * @see Control#update() | |
| 6019 */ | |
| 6020 public override void redraw() { | |
| 6021 super.redraw(); | |
| 6022 int itemCount = getPartialBottomIndex() - topIndex + 1; | |
| 6023 renderer.reset(topIndex, itemCount); | |
| 6024 renderer.calculate(topIndex, itemCount); | |
| 6025 setScrollBars(false); | |
| 6026 } | |
| 6027 /** | |
| 6028 * Causes the rectangular area of the receiver specified by | |
| 6029 * the arguments to be marked as needing to be redrawn. | |
| 6030 * The next time a paint request is processed, that area of | |
| 6031 * the receiver will be painted. If the <code>all</code> flag | |
| 6032 * is <code>true</code>, any children of the receiver which | |
| 6033 * intersect with the specified area will also paint their | |
| 6034 * intersecting areas. If the <code>all</code> flag is | |
| 6035 * <code>false</code>, the children will not be painted. | |
| 6036 * <p> | |
| 6037 * Marks the content width of all lines in the specified rectangle | |
| 6038 * as unknown. Recalculates the content width of all visible lines. | |
| 6039 * When a <code>LineStyleListener</code> is used a redraw call | |
| 6040 * is the only notification to the widget that styles have changed | |
| 6041 * and that the content width may have changed. | |
| 6042 * </p> | |
| 6043 * | |
| 6044 * @param x the x coordinate of the area to draw | |
| 6045 * @param y the y coordinate of the area to draw | |
| 6046 * @param width the width of the area to draw | |
| 6047 * @param height the height of the area to draw | |
| 6048 * @param all <code>true</code> if children should redraw, and <code>false</code> otherwise | |
| 6049 * | |
| 6050 * @exception DWTException <ul> | |
| 6051 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6052 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6053 * </ul> | |
| 6054 * | |
| 6055 * @see Control#update() | |
| 6056 */ | |
| 6057 public override void redraw(int x, int y, int width, int height, bool all) { | |
| 6058 super.redraw(x, y, width, height, all); | |
| 6059 if (height > 0) { | |
| 6060 int firstLine = getLineIndex(y); | |
| 6061 int lastLine = getLineIndex(y + height); | |
| 6062 resetCache(firstLine, lastLine - firstLine + 1); | |
| 6063 } | |
| 6064 } | |
| 6065 void redrawLines(int startLine, int lineCount) { | |
| 6066 // do nothing if redraw range is completely invisible | |
| 6067 int partialBottomIndex = getPartialBottomIndex(); | |
| 6068 if (startLine > partialBottomIndex || startLine + lineCount - 1 < topIndex) { | |
| 6069 return; | |
| 6070 } | |
| 6071 // only redraw visible lines | |
| 6072 if (startLine < topIndex) { | |
| 6073 lineCount -= topIndex - startLine; | |
| 6074 startLine = topIndex; | |
| 6075 } | |
| 6076 if (startLine + lineCount - 1 > partialBottomIndex) { | |
| 6077 lineCount = partialBottomIndex - startLine + 1; | |
| 6078 } | |
| 6079 startLine -= topIndex; | |
| 6080 int redrawTop = getLinePixel(startLine); | |
| 6081 int redrawBottom = getLinePixel(startLine + lineCount); | |
| 6082 int redrawWidth = clientAreaWidth - leftMargin - rightMargin; | |
| 6083 super.redraw(leftMargin, redrawTop, redrawWidth, redrawBottom - redrawTop, true); | |
| 6084 } | |
| 6085 void redrawLinesBullet (int[] redrawLines) { | |
| 6086 if (redrawLines is null) return; | |
| 6087 int topIndex = getPartialTopIndex(); | |
| 6088 int bottomIndex = getPartialBottomIndex(); | |
| 6089 for (int i = 0; i < redrawLines.length; i++) { | |
| 6090 int lineIndex = redrawLines[i]; | |
| 6091 if (!(topIndex <= lineIndex && lineIndex <= bottomIndex)) continue; | |
| 6092 int width = -1; | |
| 6093 Bullet bullet = renderer.getLineBullet(lineIndex, null); | |
| 6094 if (bullet !is null) { | |
| 6095 StyleRange style = bullet.style; | |
| 6096 GlyphMetrics metrics = style.metrics; | |
| 6097 width = metrics.width; | |
| 6098 } | |
| 6099 if (width is -1) width = getClientArea().width; | |
| 6100 int height = renderer.getLineHeight(lineIndex); | |
| 6101 int y = getLinePixel(lineIndex); | |
| 6102 super.redraw(0, y, width, height, false); | |
| 6103 } | |
| 6104 } | |
| 6105 /** | |
| 6106 * Redraws the specified text range. | |
| 6107 * | |
| 6108 * @param start offset of the first character to redraw | |
| 6109 * @param length number of characters to redraw | |
| 6110 * @param clearBackground true if the background should be cleared as | |
| 6111 * part of the redraw operation. If true, the entire redraw range will | |
| 6112 * be cleared before anything is redrawn. If the redraw range includes | |
| 6113 * the last character of a line (i.e., the entire line is redrawn) the | |
| 6114 * line is cleared all the way to the right border of the widget. | |
| 6115 * The redraw operation will be faster and smoother if clearBackground | |
| 6116 * is set to false. Whether or not the flag can be set to false depends | |
| 6117 * on the type of change that has taken place. If font styles or | |
| 6118 * background colors for the redraw range have changed, clearBackground | |
| 6119 * should be set to true. If only foreground colors have changed for | |
| 6120 * the redraw range, clearBackground can be set to false. | |
| 6121 * @exception DWTException <ul> | |
| 6122 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6123 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6124 * </ul> | |
| 6125 * @exception IllegalArgumentException <ul> | |
| 6126 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 6127 * </ul> | |
| 6128 */ | |
| 6129 public void redrawRange(int start, int length, bool clearBackground) { | |
| 6130 checkWidget(); | |
| 6131 int end = start + length; | |
| 6132 int contentLength = content.getCharCount(); | |
| 6133 if (start > end || start < 0 || end > contentLength) { | |
| 6134 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 6135 } | |
| 6136 int firstLine = content.getLineAtOffset(start); | |
| 6137 int lastLine = content.getLineAtOffset(end); | |
| 6138 resetCache(firstLine, lastLine - firstLine + 1); | |
| 6139 internalRedrawRange(start, length); | |
| 6140 } | |
| 6141 /** | |
| 6142 * Removes the specified bidirectional segment listener. | |
| 6143 * | |
| 6144 * @param listener the listener | |
| 6145 * @exception DWTException <ul> | |
| 6146 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6147 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6148 * </ul> | |
| 6149 * @exception IllegalArgumentException <ul> | |
| 6150 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6151 * </ul> | |
| 6152 * @since 2.0 | |
| 6153 */ | |
| 6154 public void removeBidiSegmentListener(BidiSegmentListener listener) { | |
| 6155 checkWidget(); | |
| 6156 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6157 removeListener(LineGetSegments, listener); | |
| 6158 } | |
| 6159 /** | |
| 6160 * Removes the specified extended modify listener. | |
| 6161 * | |
| 6162 * @param extendedModifyListener the listener | |
| 6163 * @exception DWTException <ul> | |
| 6164 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6165 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6166 * </ul> | |
| 6167 * @exception IllegalArgumentException <ul> | |
| 6168 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6169 * </ul> | |
| 6170 */ | |
| 6171 public void removeExtendedModifyListener(ExtendedModifyListener extendedModifyListener) { | |
| 6172 checkWidget(); | |
| 6173 if (extendedModifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6174 removeListener(ExtendedModify, extendedModifyListener); | |
| 6175 } | |
| 6176 /** | |
| 6177 * Removes the specified line background listener. | |
| 6178 * | |
| 6179 * @param listener the listener | |
| 6180 * @exception DWTException <ul> | |
| 6181 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6182 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6183 * </ul> | |
| 6184 * @exception IllegalArgumentException <ul> | |
| 6185 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6186 * </ul> | |
| 6187 */ | |
| 6188 public void removeLineBackgroundListener(LineBackgroundListener listener) { | |
| 6189 checkWidget(); | |
| 6190 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6191 removeListener(LineGetBackground, listener); | |
| 6192 } | |
| 6193 /** | |
| 6194 * Removes the specified line style listener. | |
| 6195 * | |
| 6196 * @param listener the listener | |
| 6197 * @exception DWTException <ul> | |
| 6198 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6199 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6200 * </ul> | |
| 6201 * @exception IllegalArgumentException <ul> | |
| 6202 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6203 * </ul> | |
| 6204 */ | |
| 6205 public void removeLineStyleListener(LineStyleListener listener) { | |
| 6206 checkWidget(); | |
| 6207 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6208 removeListener(LineGetStyle, listener); | |
| 6209 } | |
| 6210 /** | |
| 6211 * Removes the specified modify listener. | |
| 6212 * | |
| 6213 * @param modifyListener the listener | |
| 6214 * @exception DWTException <ul> | |
| 6215 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6216 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6217 * </ul> | |
| 6218 * @exception IllegalArgumentException <ul> | |
| 6219 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6220 * </ul> | |
| 6221 */ | |
| 6222 public void removeModifyListener(ModifyListener modifyListener) { | |
| 6223 checkWidget(); | |
| 6224 if (modifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6225 removeListener(DWT.Modify, modifyListener); | |
| 6226 } | |
| 6227 /** | |
| 6228 * Removes the specified listener. | |
| 6229 * | |
| 6230 * @param listener the listener | |
| 6231 * @exception DWTException <ul> | |
| 6232 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6233 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6234 * </ul> | |
| 6235 * @exception IllegalArgumentException <ul> | |
| 6236 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6237 * </ul> | |
| 6238 * @since 3.2 | |
| 6239 */ | |
| 6240 public void removePaintObjectListener(PaintObjectListener listener) { | |
| 6241 checkWidget(); | |
| 6242 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6243 removeListener(PaintObject, listener); | |
| 6244 } | |
| 6245 /** | |
| 6246 * Removes the listener from the collection of listeners who will | |
| 6247 * be notified when the user changes the receiver's selection. | |
| 6248 * | |
| 6249 * @param listener the listener which should no longer be notified | |
| 6250 * | |
| 6251 * @exception IllegalArgumentException <ul> | |
| 6252 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 6253 * </ul> | |
| 6254 * @exception DWTException <ul> | |
| 6255 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6256 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6257 * </ul> | |
| 6258 * | |
| 6259 * @see SelectionListener | |
| 6260 * @see #addSelectionListener | |
| 6261 */ | |
| 6262 public void removeSelectionListener(SelectionListener listener) { | |
| 6263 checkWidget(); | |
| 6264 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6265 removeListener(DWT.Selection, listener); | |
| 6266 } | |
| 6267 /** | |
| 6268 * Removes the specified verify listener. | |
| 6269 * | |
| 6270 * @param verifyListener the listener | |
| 6271 * @exception DWTException <ul> | |
| 6272 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6273 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6274 * </ul> | |
| 6275 * @exception IllegalArgumentException <ul> | |
| 6276 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6277 * </ul> | |
| 6278 */ | |
| 6279 public void removeVerifyListener(VerifyListener verifyListener) { | |
| 6280 checkWidget(); | |
| 6281 if (verifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6282 removeListener(DWT.Verify, verifyListener); | |
| 6283 } | |
| 6284 /** | |
| 6285 * Removes the specified key verify listener. | |
| 6286 * | |
| 6287 * @param listener the listener | |
| 6288 * @exception DWTException <ul> | |
| 6289 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6290 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6291 * </ul> | |
| 6292 * @exception IllegalArgumentException <ul> | |
| 6293 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6294 * </ul> | |
| 6295 */ | |
| 6296 public void removeVerifyKeyListener(VerifyKeyListener listener) { | |
| 6297 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6298 removeListener(VerifyKey, listener); | |
| 6299 } | |
| 6300 /** | |
| 6301 * Removes the specified word movement listener. | |
| 6302 * | |
| 6303 * @param listener the listener | |
| 6304 * @exception DWTException <ul> | |
| 6305 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6306 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6307 * </ul> | |
| 6308 * @exception IllegalArgumentException <ul> | |
| 6309 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6310 * </ul> | |
| 6311 * | |
| 6312 * @see MovementEvent | |
| 6313 * @see MovementListener | |
| 6314 * @see #addWordMovementListener | |
| 6315 * | |
| 6316 * @since 3.3 | |
| 6317 */ | |
| 6318 | |
| 6319 public void removeWordMovementListener(MovementListener listener) { | |
| 6320 checkWidget(); | |
| 6321 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6322 removeListener(WordNext, listener); | |
| 6323 removeListener(WordPrevious, listener); | |
| 6324 } | |
| 6325 /** | |
| 6326 * Replaces the styles in the given range with new styles. This method | |
| 6327 * effectively deletes the styles in the given range and then adds the | |
| 6328 * the new styles. | |
| 6329 * <p> | |
| 6330 * Note: Because a StyleRange includes the start and length, the | |
| 6331 * same instance cannot occur multiple times in the array of styles. | |
| 6332 * If the same style attributes, such as font and color, occur in | |
| 6333 * multiple StyleRanges, <code>setStyleRanges(int, int, int[], StyleRange[])</code> | |
| 6334 * can be used to share styles and reduce memory usage. | |
| 6335 * </p><p> | |
| 6336 * Should not be called if a LineStyleListener has been set since the | |
| 6337 * listener maintains the styles. | |
| 6338 * </p> | |
| 6339 * | |
| 6340 * @param start offset of first character where styles will be deleted | |
| 6341 * @param length length of the range to delete styles in | |
| 6342 * @param ranges StyleRange objects containing the new style information. | |
| 6343 * The ranges should not overlap and should be within the specified start | |
| 6344 * and length. The style rendering is undefined if the ranges do overlap | |
| 6345 * or are ill-defined. Must not be null. | |
| 6346 * @exception DWTException <ul> | |
| 6347 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6348 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6349 * </ul> | |
| 6350 * @exception IllegalArgumentException <ul> | |
| 6351 * <li>ERROR_INVALID_RANGE when either start or end is outside the valid range (0 <= offset <= getCharCount())</li> | |
| 6352 * <li>ERROR_NULL_ARGUMENT when ranges is null</li> | |
| 6353 * </ul> | |
| 6354 * | |
| 6355 * @since 2.0 | |
| 6356 * | |
| 6357 * @see #setStyleRanges(int, int, int[], StyleRange[]) | |
| 6358 */ | |
| 6359 public void replaceStyleRanges(int start, int length, StyleRange[] ranges) { | |
| 6360 checkWidget(); | |
| 6361 if (isListening(LineGetStyle)) return; | |
| 6362 if (ranges is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6363 setStyleRanges(start, length, null, ranges, false); | |
| 6364 } | |
| 6365 /** | |
| 6366 * Replaces the given text range with new text. | |
| 6367 * If the widget has the DWT.SINGLE style and "text" contains more than | |
| 6368 * one line, only the first line is rendered but the text is stored | |
| 6369 * unchanged. A subsequent call to getText will return the same text | |
| 6370 * that was set. Note that only a single line of text should be set when | |
| 6371 * the DWT.SINGLE style is used. | |
| 6372 * <p> | |
| 6373 * <b>NOTE:</b> During the replace operation the current selection is | |
| 6374 * changed as follows: | |
| 6375 * <ul> | |
| 6376 * <li>selection before replaced text: selection unchanged | |
| 6377 * <li>selection after replaced text: adjust the selection so that same text | |
| 6378 * remains selected | |
| 6379 * <li>selection intersects replaced text: selection is cleared and caret | |
| 6380 * is placed after inserted text | |
| 6381 * </ul> | |
| 6382 * </p> | |
| 6383 * | |
| 6384 * @param start offset of first character to replace | |
| 6385 * @param length number of characters to replace. Use 0 to insert text | |
| 6386 * @param text new text. May be empty to delete text. | |
| 6387 * @exception DWTException <ul> | |
| 6388 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6389 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6390 * </ul> | |
| 6391 * @exception IllegalArgumentException <ul> | |
| 6392 * <li>ERROR_INVALID_RANGE when either start or end is outside the valid range (0 <= offset <= getCharCount())</li> | |
| 6393 * <li>ERROR_INVALID_ARGUMENT when either start or end is inside a multi byte line delimiter. | |
| 6394 * 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> | |
| 6395 * <li>ERROR_NULL_ARGUMENT when string is null</li> | |
| 6396 * </ul> | |
| 6397 */ | |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
6398 public void replaceTextRange(int start, int length, String text) { |
| 155 | 6399 checkWidget(); |
| 6400 if (text is null) { | |
| 6401 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6402 } | |
| 6403 int contentLength = getCharCount(); | |
| 6404 int end = start + length; | |
| 6405 if (start > end || start < 0 || end > contentLength) { | |
| 6406 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 6407 } | |
| 6408 Event event = new Event(); | |
| 6409 event.start = start; | |
| 6410 event.end = end; | |
| 6411 event.text = text; | |
| 6412 modifyContent(event, false); | |
| 6413 } | |
| 6414 /** | |
| 6415 * Resets the caret position, selection and scroll offsets. Recalculate | |
| 6416 * the content width and scroll bars. Redraw the widget. | |
| 6417 */ | |
| 6418 void reset() { | |
| 6419 ScrollBar verticalBar = getVerticalBar(); | |
| 6420 ScrollBar horizontalBar = getHorizontalBar(); | |
| 6421 caretOffset = 0; | |
| 6422 topIndex = 0; | |
| 6423 topIndexY = 0; | |
| 6424 verticalScrollOffset = 0; | |
| 6425 horizontalScrollOffset = 0; | |
| 6426 resetSelection(); | |
| 6427 renderer.setContent(content); | |
| 6428 if (verticalBar !is null) { | |
| 6429 verticalBar.setSelection(0); | |
| 6430 } | |
| 6431 if (horizontalBar !is null) { | |
| 6432 horizontalBar.setSelection(0); | |
| 6433 } | |
| 6434 resetCache(0, 0); | |
| 6435 setCaretLocation(); | |
| 6436 super.redraw(); | |
| 6437 } | |
| 6438 void resetCache(int firstLine, int count) { | |
| 6439 int maxLineIndex = renderer.maxWidthLineIndex; | |
| 6440 renderer.reset(firstLine, count); | |
| 6441 renderer.calculateClientArea(); | |
| 6442 if (0 <= maxLineIndex && maxLineIndex < content.getLineCount()) { | |
| 6443 renderer.calculate(maxLineIndex, 1); | |
| 6444 } | |
| 6445 setScrollBars(true); | |
| 6446 if (!isFixedLineHeight()) { | |
| 6447 if (topIndex > firstLine) { | |
| 6448 verticalScrollOffset = -1; | |
| 6449 } | |
| 6450 renderer.calculateIdle(); | |
| 6451 } | |
| 6452 } | |
| 6453 /** | |
| 6454 * Resets the selection. | |
| 6455 */ | |
| 6456 void resetSelection() { | |
| 6457 selection.x = selection.y = caretOffset; | |
| 6458 selectionAnchor = -1; | |
| 6459 } | |
| 6460 | |
| 6461 public override void scroll(int destX, int destY, int x, int y, int width, int height, bool all) { | |
| 6462 super.scroll(destX, destY, x, y, width, height, false); | |
| 6463 if (all) { | |
| 6464 int deltaX = destX - x, deltaY = destY - y; | |
| 6465 Control[] children = getChildren(); | |
| 6466 for (int i=0; i<children.length; i++) { | |
| 6467 Control child = children[i]; | |
| 6468 Rectangle rect = child.getBounds(); | |
| 6469 child.setLocation(rect.x + deltaX, rect.y + deltaY); | |
| 6470 } | |
| 6471 } | |
| 6472 } | |
| 6473 | |
| 6474 /** | |
| 6475 * Scrolls the widget horizontally. | |
| 6476 * | |
| 6477 * @param pixels number of pixels to scroll, > 0 = scroll left, | |
| 6478 * < 0 scroll right | |
| 6479 * @param adjustScrollBar | |
| 6480 * true= the scroll thumb will be moved to reflect the new scroll offset. | |
| 6481 * false = the scroll thumb will not be moved | |
| 6482 * @return | |
| 6483 * true=the widget was scrolled | |
| 6484 * false=the widget was not scrolled, the given offset is not valid. | |
| 6485 */ | |
| 6486 bool scrollHorizontal(int pixels, bool adjustScrollBar) { | |
| 6487 if (pixels is 0) { | |
| 6488 return false; | |
| 6489 } | |
| 6490 ScrollBar horizontalBar = getHorizontalBar(); | |
| 6491 if (horizontalBar !is null && adjustScrollBar) { | |
| 6492 horizontalBar.setSelection(horizontalScrollOffset + pixels); | |
| 6493 } | |
| 6494 int scrollHeight = clientAreaHeight - topMargin - bottomMargin; | |
| 6495 if (pixels > 0) { | |
| 6496 int sourceX = leftMargin + pixels; | |
| 6497 int scrollWidth = clientAreaWidth - sourceX - rightMargin; | |
| 6498 if (scrollWidth > 0) { | |
| 6499 scroll(leftMargin, topMargin, sourceX, topMargin, scrollWidth, scrollHeight, true); | |
| 6500 } | |
| 6501 if (sourceX > scrollWidth) { | |
| 6502 super.redraw(leftMargin + scrollWidth, topMargin, pixels - scrollWidth, scrollHeight, true); | |
| 6503 } | |
| 6504 } else { | |
| 6505 int destinationX = leftMargin - pixels; | |
| 6506 int scrollWidth = clientAreaWidth - destinationX - rightMargin; | |
| 6507 if (scrollWidth > 0) { | |
| 6508 scroll(destinationX, topMargin, leftMargin, topMargin, scrollWidth, scrollHeight, true); | |
| 6509 } | |
| 6510 if (destinationX > scrollWidth) { | |
| 6511 super.redraw(leftMargin + scrollWidth, topMargin, -pixels - scrollWidth, scrollHeight, true); | |
| 6512 } | |
| 6513 } | |
| 6514 horizontalScrollOffset += pixels; | |
| 6515 int oldColumnX = columnX; | |
| 6516 setCaretLocation(); | |
| 6517 columnX = oldColumnX; | |
| 6518 return true; | |
| 6519 } | |
| 6520 /** | |
| 6521 * Scrolls the widget vertically. | |
| 6522 * | |
| 6523 * @param pixel the new vertical scroll offset | |
| 6524 * @param adjustScrollBar | |
| 6525 * true= the scroll thumb will be moved to reflect the new scroll offset. | |
| 6526 * false = the scroll thumb will not be moved | |
| 6527 * @return | |
| 6528 * true=the widget was scrolled | |
| 6529 * false=the widget was not scrolled | |
| 6530 */ | |
| 6531 bool scrollVertical(int pixels, bool adjustScrollBar) { | |
| 6532 if (pixels is 0) { | |
| 6533 return false; | |
| 6534 } | |
| 6535 if (verticalScrollOffset !is -1) { | |
| 6536 ScrollBar verticalBar = getVerticalBar(); | |
| 6537 if (verticalBar !is null && adjustScrollBar) { | |
| 6538 verticalBar.setSelection(verticalScrollOffset + pixels); | |
| 6539 } | |
| 6540 int scrollWidth = clientAreaWidth - leftMargin - rightMargin; | |
| 6541 if (pixels > 0) { | |
| 6542 int sourceY = topMargin + pixels; | |
| 6543 int scrollHeight = clientAreaHeight - sourceY - bottomMargin; | |
| 6544 if (scrollHeight > 0) { | |
| 6545 scroll(leftMargin, topMargin, leftMargin, sourceY, scrollWidth, scrollHeight, true); | |
| 6546 } | |
| 6547 if (sourceY > scrollHeight) { | |
| 6548 int redrawY = Math.max(0, topMargin + scrollHeight); | |
| 6549 int redrawHeight = Math.min(clientAreaHeight, pixels - scrollHeight); | |
| 6550 super.redraw(leftMargin, redrawY, scrollWidth, redrawHeight, true); | |
| 6551 } | |
| 6552 } else { | |
| 6553 int destinationY = topMargin - pixels; | |
| 6554 int scrollHeight = clientAreaHeight - destinationY - bottomMargin; | |
| 6555 if (scrollHeight > 0) { | |
| 6556 scroll(leftMargin, destinationY, leftMargin, topMargin, scrollWidth, scrollHeight, true); | |
| 6557 } | |
| 6558 if (destinationY > scrollHeight) { | |
| 6559 int redrawY = Math.max(0, topMargin + scrollHeight); | |
| 6560 int redrawHeight = Math.min(clientAreaHeight, -pixels - scrollHeight); | |
| 6561 super.redraw(leftMargin, redrawY, scrollWidth, redrawHeight, true); | |
| 6562 } | |
| 6563 } | |
| 6564 verticalScrollOffset += pixels; | |
| 6565 calculateTopIndex(pixels); | |
| 6566 } else { | |
| 6567 calculateTopIndex(pixels); | |
| 6568 super.redraw(); | |
| 6569 } | |
| 6570 int oldColumnX = columnX; | |
| 6571 setCaretLocation(); | |
| 6572 columnX = oldColumnX; | |
| 6573 return true; | |
| 6574 } | |
| 6575 void scrollText(int srcY, int destY) { | |
| 6576 if (srcY is destY) return; | |
| 6577 int deltaY = destY - srcY; | |
| 6578 int scrollWidth = clientAreaWidth - leftMargin - rightMargin, scrollHeight; | |
| 6579 if (deltaY > 0) { | |
| 6580 scrollHeight = clientAreaHeight - srcY - bottomMargin; | |
| 6581 } else { | |
| 6582 scrollHeight = clientAreaHeight - destY - bottomMargin; | |
| 6583 } | |
| 6584 scroll(leftMargin, destY, leftMargin, srcY, scrollWidth, scrollHeight, true); | |
| 6585 if ((0 < srcY + scrollHeight) && (topMargin > srcY)) { | |
| 6586 super.redraw(leftMargin, deltaY, scrollWidth, topMargin, false); | |
| 6587 } | |
| 6588 if ((0 < destY + scrollHeight) && (topMargin > destY)) { | |
| 6589 super.redraw(leftMargin, 0, scrollWidth, topMargin, false); | |
| 6590 } | |
| 6591 if ((clientAreaHeight - bottomMargin < srcY + scrollHeight) && (clientAreaHeight > srcY)) { | |
| 6592 super.redraw(leftMargin, clientAreaHeight - bottomMargin + deltaY, scrollWidth, bottomMargin, false); | |
| 6593 } | |
| 6594 if ((clientAreaHeight - bottomMargin < destY + scrollHeight) && (clientAreaHeight > destY)) { | |
| 6595 super.redraw(leftMargin, clientAreaHeight - bottomMargin, scrollWidth, bottomMargin, false); | |
| 6596 } | |
| 6597 } | |
| 6598 /** | |
| 6599 * Selects all the text. | |
| 6600 * | |
| 6601 * @exception DWTException <ul> | |
| 6602 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6603 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6604 * </ul> | |
| 6605 */ | |
| 6606 public void selectAll() { | |
| 6607 checkWidget(); | |
| 6608 setSelection(0, Math.max(getCharCount(),0)); | |
| 6609 } | |
| 6610 /** | |
| 6611 * Replaces/inserts text as defined by the event. | |
| 6612 * | |
| 6613 * @param event the text change event. | |
| 6614 * <ul> | |
| 6615 * <li>event.start - the replace start offset</li> | |
| 6616 * <li>event.end - the replace end offset</li> | |
| 6617 * <li>event.text - the new text</li> | |
| 6618 * </ul> | |
| 6619 */ | |
| 6620 void sendKeyEvent(Event event) { | |
| 6621 if (editable) { | |
| 6622 modifyContent(event, true); | |
| 6623 } | |
| 6624 } | |
| 6625 /** | |
| 6626 * Returns a StyledTextEvent that can be used to request data such | |
| 6627 * as styles and background color for a line. | |
| 6628 * <p> | |
| 6629 * The specified line may be a visual (wrapped) line if in word | |
| 6630 * wrap mode. The returned object will always be for a logical | |
| 6631 * (unwrapped) line. | |
| 6632 * </p> | |
| 6633 * | |
| 6634 * @param lineOffset offset of the line. This may be the offset of | |
| 6635 * a visual line if the widget is in word wrap mode. | |
| 6636 * @param line line text. This may be the text of a visual line if | |
| 6637 * the widget is in word wrap mode. | |
| 6638 * @return StyledTextEvent that can be used to request line data | |
| 6639 * for the given line. | |
| 6640 */ | |
|
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|
6641 StyledTextEvent sendLineEvent(int eventType, int lineOffset, String line) { |
| 155 | 6642 StyledTextEvent event = null; |
| 6643 if (isListening(eventType)) { | |
| 6644 event = new StyledTextEvent(content); | |
| 6645 event.detail = lineOffset; | |
| 6646 event.text = line; | |
| 6647 event.alignment = alignment; | |
| 6648 event.indent = indent; | |
| 6649 event.justify = justify; | |
| 6650 notifyListeners(eventType, event); | |
| 6651 } | |
| 6652 return event; | |
| 6653 } | |
| 6654 void sendModifyEvent(Event event) { | |
| 6655 Accessible accessible = getAccessible(); | |
| 6656 if (event.text.length is 0) { | |
| 6657 accessible.textChanged(ACC.TEXT_DELETE, event.start, event.end - event.start); | |
| 6658 } else { | |
| 6659 if (event.start is event.end) { | |
| 6660 accessible.textChanged(ACC.TEXT_INSERT, event.start, event.text.length); | |
| 6661 } else { | |
| 6662 accessible.textChanged(ACC.TEXT_DELETE, event.start, event.end - event.start); | |
| 6663 accessible.textChanged(ACC.TEXT_INSERT, event.start, event.text.length); | |
| 6664 } | |
| 6665 } | |
| 6666 notifyListeners(DWT.Modify, event); | |
| 6667 } | |
| 6668 /** | |
| 6669 * Sends the specified selection event. | |
| 6670 */ | |
| 6671 void sendSelectionEvent() { | |
| 6672 getAccessible().textSelectionChanged(); | |
| 6673 Event event = new Event(); | |
| 6674 event.x = selection.x; | |
| 6675 event.y = selection.y; | |
| 6676 notifyListeners(DWT.Selection, event); | |
| 6677 } | |
|
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|
6678 int sendWordBoundaryEvent(int eventType, int movement, int offset, int newOffset, String lineText, int lineOffset) { |
| 155 | 6679 if (isListening(eventType)) { |
| 6680 StyledTextEvent event = new StyledTextEvent(content); | |
| 6681 event.detail = lineOffset; | |
| 6682 event.text = lineText; | |
| 6683 event.count = movement; | |
| 6684 event.start = offset; | |
| 6685 event.end = newOffset; | |
| 6686 notifyListeners(eventType, event); | |
| 6687 offset = event.end; | |
| 6688 if (offset !is newOffset) { | |
| 6689 int length = getCharCount(); | |
| 6690 if (offset < 0) { | |
| 6691 offset = 0; | |
| 6692 } else if (offset > length) { | |
| 6693 offset = length; | |
| 6694 } else { | |
| 6695 if (isLineDelimiter(offset)) { | |
| 6696 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 6697 } | |
| 6698 } | |
| 6699 } | |
| 6700 return offset; | |
| 6701 } | |
| 6702 return newOffset; | |
| 6703 } | |
| 6704 /** | |
| 6705 * Sets the alignment of the widget. The argument should be one of <code>DWT.LEFT</code>, | |
| 6706 * <code>DWT.CENTER</code> or <code>DWT.RIGHT</code>. The alignment applies for all lines. | |
| 6707 * | |
| 6708 * @param alignment the new alignment | |
| 6709 * | |
| 6710 * @exception DWTException <ul> | |
| 6711 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6712 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6713 * </ul> | |
| 6714 * | |
| 6715 * @see #setLineAlignment(int, int, int) | |
| 6716 * | |
| 6717 * @since 3.2 | |
| 6718 */ | |
| 6719 public void setAlignment(int alignment) { | |
| 6720 checkWidget(); | |
| 6721 alignment &= (DWT.LEFT | DWT.RIGHT | DWT.CENTER); | |
| 6722 if (alignment is 0 || this.alignment is alignment) return; | |
| 6723 this.alignment = alignment; | |
| 6724 resetCache(0, content.getLineCount()); | |
| 6725 setCaretLocation(); | |
| 6726 super.redraw(); | |
| 6727 } | |
| 6728 /** | |
| 6729 * @see Control#setBackground(Color) | |
| 6730 */ | |
| 6731 public override void setBackground(Color color) { | |
| 6732 checkWidget(); | |
| 6733 background = color; | |
| 6734 super.redraw(); | |
| 6735 } | |
| 6736 /** | |
| 6737 * Sets the receiver's caret. Set the caret's height and location. | |
| 6738 * | |
| 6739 * </p> | |
| 6740 * @param caret the new caret for the receiver | |
| 6741 * | |
| 6742 * @exception DWTException <ul> | |
| 6743 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6744 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6745 * </ul> | |
| 6746 */ | |
| 6747 public override void setCaret(Caret caret) { | |
| 6748 checkWidget (); | |
| 6749 super.setCaret(caret); | |
| 6750 caretDirection = DWT.NULL; | |
| 6751 if (caret !is null) { | |
| 6752 setCaretLocation(); | |
| 6753 } | |
| 6754 } | |
| 6755 /** | |
| 6756 * Sets the BIDI coloring mode. When true the BIDI text display | |
| 6757 * algorithm is applied to segments of text that are the same | |
| 6758 * color. | |
| 6759 * | |
| 6760 * @param mode the new coloring mode | |
| 6761 * @exception DWTException <ul> | |
| 6762 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6763 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6764 * </ul> | |
| 6765 * | |
| 6766 * @deprecated use BidiSegmentListener instead. | |
| 6767 */ | |
| 6768 public void setBidiColoring(bool mode) { | |
| 6769 checkWidget(); | |
| 6770 bidiColoring = mode; | |
| 6771 } | |
| 6772 /** | |
| 6773 * Moves the Caret to the current caret offset. | |
| 6774 */ | |
| 6775 void setCaretLocation() { | |
| 6776 Point newCaretPos = getPointAtOffset(caretOffset); | |
| 6777 setCaretLocation(newCaretPos, getCaretDirection()); | |
| 6778 } | |
| 6779 void setCaretLocation(Point location, int direction) { | |
| 6780 Caret caret = getCaret(); | |
| 6781 if (caret !is null) { | |
| 6782 bool isDefaultCaret = caret is defaultCaret; | |
| 6783 int lineHeight = renderer.getLineHeight(); | |
| 6784 int caretHeight = lineHeight; | |
| 6785 if (!isFixedLineHeight() && isDefaultCaret) { | |
| 6786 caretHeight = getBoundsAtOffset(caretOffset).height; | |
| 6787 if (caretHeight !is lineHeight) { | |
| 6788 direction = DWT.DEFAULT; | |
| 6789 } | |
| 6790 } | |
| 6791 int imageDirection = direction; | |
| 6792 if (isMirrored()) { | |
| 6793 if (imageDirection is DWT.LEFT) { | |
| 6794 imageDirection = DWT.RIGHT; | |
| 6795 } else if (imageDirection is DWT.RIGHT) { | |
| 6796 imageDirection = DWT.LEFT; | |
| 6797 } | |
| 6798 } | |
| 6799 if (isDefaultCaret && imageDirection is DWT.RIGHT) { | |
| 6800 location.x -= (caret.getSize().x - 1); | |
| 6801 } | |
| 6802 if (isDefaultCaret) { | |
| 6803 caret.setBounds(location.x, location.y, 0, caretHeight); | |
| 6804 } else { | |
| 6805 caret.setLocation(location); | |
| 6806 } | |
| 6807 getAccessible().textCaretMoved(getCaretOffset()); | |
| 6808 if (direction !is caretDirection) { | |
| 6809 caretDirection = direction; | |
| 6810 if (isDefaultCaret) { | |
| 6811 if (imageDirection is DWT.DEFAULT) { | |
| 6812 defaultCaret.setImage(null); | |
| 6813 } else if (imageDirection is DWT.LEFT) { | |
| 6814 defaultCaret.setImage(leftCaretBitmap); | |
| 6815 } else if (imageDirection is DWT.RIGHT) { | |
| 6816 defaultCaret.setImage(rightCaretBitmap); | |
| 6817 } | |
| 6818 } | |
| 6819 if (caretDirection is DWT.LEFT) { | |
| 6820 BidiUtil.setKeyboardLanguage(BidiUtil.KEYBOARD_NON_BIDI); | |
| 6821 } else if (caretDirection is DWT.RIGHT) { | |
| 6822 BidiUtil.setKeyboardLanguage(BidiUtil.KEYBOARD_BIDI); | |
| 6823 } | |
| 6824 } | |
| 6825 } | |
| 6826 columnX = location.x; | |
| 6827 } | |
| 6828 /** | |
| 6829 * Sets the caret offset. | |
| 6830 * | |
| 6831 * @param offset caret offset, relative to the first character in the text. | |
| 6832 * @exception DWTException <ul> | |
| 6833 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6834 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6835 * </ul> | |
| 6836 * @exception IllegalArgumentException <ul> | |
| 6837 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 6838 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 6839 * </ul> | |
| 6840 */ | |
| 6841 public void setCaretOffset(int offset) { | |
| 6842 checkWidget(); | |
| 6843 int length = getCharCount(); | |
| 6844 if (length > 0 && offset !is caretOffset) { | |
| 6845 if (offset < 0) { | |
| 6846 caretOffset = 0; | |
| 6847 } else if (offset > length) { | |
| 6848 caretOffset = length; | |
| 6849 } else { | |
| 6850 if (isLineDelimiter(offset)) { | |
| 6851 // offset is inside a multi byte line delimiter. This is an | |
| 6852 // illegal operation and an exception is thrown. Fixes 1GDKK3R | |
| 6853 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 6854 } | |
| 6855 caretOffset = offset; | |
| 6856 } | |
| 6857 // clear the selection if the caret is moved. | |
| 6858 // don't notify listeners about the selection change. | |
| 6859 clearSelection(false); | |
| 6860 } | |
| 6861 setCaretLocation(); | |
| 6862 } | |
| 6863 /** | |
| 6864 * Copies the specified text range to the clipboard. The text will be placed | |
| 6865 * in the clipboard in plain text format and RTF format. | |
| 6866 * | |
| 6867 * @param start start index of the text | |
| 6868 * @param length length of text to place in clipboard | |
| 6869 * | |
| 6870 * @exception DWTError, see Clipboard.setContents | |
| 6871 * @see dwt.dnd.Clipboard#setContents | |
| 6872 */ | |
| 6873 void setClipboardContent(int start, int length, int clipboardType) { | |
| 6874 if (clipboardType is DND.SELECTION_CLIPBOARD && !(IS_MOTIF || IS_GTK)) return; | |
| 6875 TextTransfer plainTextTransfer = TextTransfer.getInstance(); | |
| 6876 TextWriter plainTextWriter = new TextWriter(start, length); | |
|
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diff
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|
6877 String plainText = getPlatformDelimitedText(plainTextWriter); |
| 155 | 6878 Object[] data; |
| 6879 Transfer[] types; | |
| 6880 if (clipboardType is DND.SELECTION_CLIPBOARD) { | |
| 6881 data = [ cast(Object) new ArrayWrapperString(plainText) ]; | |
| 6882 types = [plainTextTransfer]; | |
| 6883 } else { | |
| 6884 RTFTransfer rtfTransfer = RTFTransfer.getInstance(); | |
| 6885 RTFWriter rtfWriter = new RTFWriter(start, length); | |
|
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parents:
197
diff
changeset
|
6886 String rtfText = getPlatformDelimitedText(rtfWriter); |
| 155 | 6887 data = [ cast(Object) new ArrayWrapperString(rtfText), new ArrayWrapperString(plainText) ]; |
| 6888 types = [ cast(Transfer)rtfTransfer, plainTextTransfer]; | |
| 6889 } | |
| 6890 clipboard.setContents(data, types, clipboardType); | |
| 6891 } | |
| 6892 /** | |
| 6893 * Sets the content implementation to use for text storage. | |
| 6894 * | |
| 6895 * @param newContent StyledTextContent implementation to use for text storage. | |
| 6896 * @exception DWTException <ul> | |
| 6897 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6898 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6899 * </ul> | |
| 6900 * @exception IllegalArgumentException <ul> | |
| 6901 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6902 * </ul> | |
| 6903 */ | |
| 6904 public void setContent(StyledTextContent newContent) { | |
| 6905 checkWidget(); | |
| 6906 if (newContent is null) { | |
| 6907 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6908 } | |
| 6909 if (content !is null) { | |
| 6910 content.removeTextChangeListener(textChangeListener); | |
| 6911 } | |
| 6912 content = newContent; | |
| 6913 content.addTextChangeListener(textChangeListener); | |
| 6914 reset(); | |
| 6915 } | |
| 6916 /** | |
| 6917 * Sets the receiver's cursor to the cursor specified by the | |
| 6918 * argument. Overridden to handle the null case since the | |
| 6919 * StyledText widget uses an ibeam as its default cursor. | |
| 6920 * | |
| 6921 * @see Control#setCursor(Cursor) | |
| 6922 */ | |
| 6923 public override void setCursor (Cursor cursor) { | |
| 6924 if (cursor is null) { | |
| 6925 Display display = getDisplay(); | |
| 6926 super.setCursor(display.getSystemCursor(DWT.CURSOR_IBEAM)); | |
| 6927 } else { | |
| 6928 super.setCursor(cursor); | |
| 6929 } | |
| 6930 } | |
| 6931 /** | |
| 6932 * Sets whether the widget : double click mouse behavior. | |
| 6933 * </p> | |
| 6934 * | |
| 6935 * @param enable if true double clicking a word selects the word, if false | |
| 6936 * double clicks have the same effect as regular mouse clicks. | |
| 6937 * @exception DWTException <ul> | |
| 6938 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6939 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6940 * </ul> | |
| 6941 */ | |
| 6942 public void setDoubleClickEnabled(bool enable) { | |
| 6943 checkWidget(); | |
| 6944 doubleClickEnabled = enable; | |
| 6945 } | |
| 6946 public override void setDragDetect (bool dragDetect_) { | |
| 6947 checkWidget (); | |
| 6948 this.dragDetect_ = dragDetect_; | |
| 6949 } | |
| 6950 /** | |
| 6951 * Sets whether the widget content can be edited. | |
| 6952 * </p> | |
| 6953 * | |
| 6954 * @param editable if true content can be edited, if false content can not be | |
| 6955 * edited | |
| 6956 * @exception DWTException <ul> | |
| 6957 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6958 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6959 * </ul> | |
| 6960 */ | |
| 6961 public void setEditable(bool editable) { | |
| 6962 checkWidget(); | |
| 6963 this.editable = editable; | |
| 6964 } | |
| 6965 /** | |
| 6966 * Sets a new font to render text with. | |
| 6967 * <p> | |
| 6968 * <b>NOTE:</b> Italic fonts are not supported unless they have no overhang | |
| 6969 * and the same baseline as regular fonts. | |
| 6970 * </p> | |
| 6971 * | |
| 6972 * @param font new font | |
| 6973 * @exception DWTException <ul> | |
| 6974 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6975 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6976 * </ul> | |
| 6977 */ | |
| 6978 public override void setFont(Font font) { | |
| 6979 checkWidget(); | |
| 6980 int oldLineHeight = renderer.getLineHeight(); | |
| 6981 super.setFont(font); | |
| 6982 renderer.setFont(getFont(), tabLength); | |
| 6983 // keep the same top line visible. fixes 5815 | |
| 6984 if (isFixedLineHeight()) { | |
| 6985 int lineHeight = renderer.getLineHeight(); | |
| 6986 if (lineHeight !is oldLineHeight) { | |
| 6987 int vscroll = (getVerticalScrollOffset() * lineHeight / oldLineHeight) - getVerticalScrollOffset(); | |
| 6988 scrollVertical(vscroll, true); | |
| 6989 } | |
| 6990 } | |
| 6991 resetCache(0, content.getLineCount()); | |
| 6992 claimBottomFreeSpace(); | |
| 6993 calculateScrollBars(); | |
| 6994 if (isBidiCaret()) createCaretBitmaps(); | |
| 6995 caretDirection = DWT.NULL; | |
| 6996 setCaretLocation(); | |
| 6997 super.redraw(); | |
| 6998 } | |
| 6999 /** | |
| 7000 * @see dwt.widgets.Control#setForeground | |
| 7001 */ | |
| 7002 public override void setForeground(Color color) { | |
| 7003 checkWidget(); | |
| 7004 foreground = color; | |
| 7005 super.setForeground(getForeground()); | |
| 7006 super.redraw(); | |
| 7007 } | |
| 7008 /** | |
| 7009 * Sets the horizontal scroll offset relative to the start of the line. | |
| 7010 * Do nothing if there is no text set. | |
| 7011 * <p> | |
| 7012 * <b>NOTE:</b> The horizontal index is reset to 0 when new text is set in the | |
| 7013 * widget. | |
| 7014 * </p> | |
| 7015 * | |
| 7016 * @param offset horizontal scroll offset relative to the start | |
| 7017 * of the line, measured in character increments starting at 0, if | |
| 7018 * equal to 0 the content is not scrolled, if > 0 = the content is scrolled. | |
| 7019 * @exception DWTException <ul> | |
| 7020 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7021 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7022 * </ul> | |
| 7023 */ | |
| 7024 public void setHorizontalIndex(int offset) { | |
| 7025 checkWidget(); | |
| 7026 if (getCharCount() is 0) { | |
| 7027 return; | |
| 7028 } | |
| 7029 if (offset < 0) { | |
| 7030 offset = 0; | |
| 7031 } | |
| 7032 offset *= getHorizontalIncrement(); | |
| 7033 // allow any value if client area width is unknown or 0. | |
| 7034 // offset will be checked in resize handler. | |
| 7035 // don't use isVisible since width is known even if widget | |
| 7036 // is temporarily invisible | |
| 7037 if (clientAreaWidth > 0) { | |
| 7038 int width = renderer.getWidth(); | |
| 7039 // prevent scrolling if the content fits in the client area. | |
| 7040 // align end of longest line with right border of client area | |
| 7041 // if offset is out of range. | |
| 7042 if (offset > width - clientAreaWidth) { | |
| 7043 offset = Math.max(0, width - clientAreaWidth); | |
| 7044 } | |
| 7045 } | |
| 7046 scrollHorizontal(offset - horizontalScrollOffset, true); | |
| 7047 } | |
| 7048 /** | |
| 7049 * Sets the horizontal pixel offset relative to the start of the line. | |
| 7050 * Do nothing if there is no text set. | |
| 7051 * <p> | |
| 7052 * <b>NOTE:</b> The horizontal pixel offset is reset to 0 when new text | |
| 7053 * is set in the widget. | |
| 7054 * </p> | |
| 7055 * | |
| 7056 * @param pixel horizontal pixel offset relative to the start | |
| 7057 * of the line. | |
| 7058 * @exception DWTException <ul> | |
| 7059 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7060 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7061 * </ul> | |
| 7062 * @since 2.0 | |
| 7063 */ | |
| 7064 public void setHorizontalPixel(int pixel) { | |
| 7065 checkWidget(); | |
| 7066 if (getCharCount() is 0) { | |
| 7067 return; | |
| 7068 } | |
| 7069 if (pixel < 0) { | |
| 7070 pixel = 0; | |
| 7071 } | |
| 7072 // allow any value if client area width is unknown or 0. | |
| 7073 // offset will be checked in resize handler. | |
| 7074 // don't use isVisible since width is known even if widget | |
| 7075 // is temporarily invisible | |
| 7076 if (clientAreaWidth > 0) { | |
| 7077 int width = renderer.getWidth(); | |
| 7078 // prevent scrolling if the content fits in the client area. | |
| 7079 // align end of longest line with right border of client area | |
| 7080 // if offset is out of range. | |
| 7081 if (pixel > width - clientAreaWidth) { | |
| 7082 pixel = Math.max(0, width - clientAreaWidth); | |
| 7083 } | |
| 7084 } | |
| 7085 scrollHorizontal(pixel - horizontalScrollOffset, true); | |
| 7086 } | |
| 7087 /** | |
| 7088 * Sets the line indentation of the widget. | |
| 7089 * <p> | |
| 7090 * It is the amount of blank space, in pixels, at the beginning of each line. | |
| 7091 * When a line wraps in several lines only the first one is indented. | |
| 7092 * </p> | |
| 7093 * | |
| 7094 * @param indent the new indent | |
| 7095 * | |
| 7096 * @exception DWTException <ul> | |
| 7097 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7098 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7099 * </ul> | |
| 7100 * | |
| 7101 * @see #setLineIndent(int, int, int) | |
| 7102 * | |
| 7103 * @since 3.2 | |
| 7104 */ | |
| 7105 public void setIndent(int indent) { | |
| 7106 checkWidget(); | |
| 7107 if (this.indent is indent || indent < 0) return; | |
| 7108 this.indent = indent; | |
| 7109 resetCache(0, content.getLineCount()); | |
| 7110 setCaretLocation(); | |
| 7111 super.redraw(); | |
| 7112 } | |
| 7113 /** | |
| 7114 * Sets whether the widget should justify lines. | |
| 7115 * | |
| 7116 * @param justify whether lines should be justified | |
| 7117 * | |
| 7118 * @exception DWTException <ul> | |
| 7119 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7120 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7121 * </ul> | |
| 7122 * | |
| 7123 * @see #setLineJustify(int, int, bool) | |
| 7124 * | |
| 7125 * @since 3.2 | |
| 7126 */ | |
| 7127 public void setJustify(bool justify) { | |
| 7128 checkWidget(); | |
| 7129 if (this.justify is justify) return; | |
| 7130 this.justify = justify; | |
| 7131 resetCache(0, content.getLineCount()); | |
| 7132 setCaretLocation(); | |
| 7133 super.redraw(); | |
| 7134 } | |
| 7135 /** | |
| 7136 * Maps a key to an action. | |
| 7137 * <p> | |
| 7138 * One action can be associated with N keys. However, each key can only | |
| 7139 * have one action (key:action is N:1 relation). | |
| 7140 * </p> | |
| 7141 * | |
| 7142 * @param key a key code defined in DWT.java or a character. | |
| 7143 * Optionally ORd with a state mask. Preferred state masks are one or more of | |
| 7144 * DWT.MOD1, DWT.MOD2, DWT.MOD3, since these masks account for modifier platform | |
| 7145 * differences. However, there may be cases where using the specific state masks | |
| 7146 * (i.e., DWT.CTRL, DWT.SHIFT, DWT.ALT, DWT.COMMAND) makes sense. | |
| 7147 * @param action one of the predefined actions defined in ST.java. | |
| 7148 * Use DWT.NULL to remove a key binding. | |
| 7149 * @exception DWTException <ul> | |
| 7150 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7151 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7152 * </ul> | |
| 7153 */ | |
| 7154 public void setKeyBinding(int key, int action) { | |
| 7155 checkWidget(); | |
| 7156 int modifierValue = key & DWT.MODIFIER_MASK; | |
| 7157 char keyChar = cast(char)(key & DWT.KEY_MASK); | |
| 7158 if (Compatibility.isLetter(keyChar)) { | |
| 7159 // make the keybinding case insensitive by adding it | |
| 7160 // in its upper and lower case form | |
| 7161 char ch = CharacterToUpper(keyChar); | |
| 7162 int newKey = ch | modifierValue; | |
| 7163 if (action is DWT.NULL) { | |
| 7164 keyActionMap.remove(newKey); | |
| 7165 } else { | |
| 7166 keyActionMap[newKey] = action; | |
| 7167 } | |
| 7168 ch = CharacterToLower(keyChar); | |
| 7169 newKey = ch | modifierValue; | |
| 7170 if (action is DWT.NULL) { | |
| 7171 keyActionMap.remove(newKey); | |
| 7172 } else { | |
| 7173 keyActionMap[newKey] = action; | |
| 7174 } | |
| 7175 } else { | |
| 7176 if (action is DWT.NULL) { | |
| 7177 keyActionMap.remove(key); | |
| 7178 } else { | |
| 7179 keyActionMap[key]=action; | |
| 7180 } | |
| 7181 } | |
| 7182 } | |
| 7183 /** | |
| 7184 * Sets the alignment of the specified lines. The argument should be one of <code>DWT.LEFT</code>, | |
| 7185 * <code>DWT.CENTER</code> or <code>DWT.RIGHT</code>. | |
| 7186 * <p> | |
| 7187 * Should not be called if a LineStyleListener has been set since the listener | |
| 7188 * maintains the line attributes. | |
| 7189 * </p><p> | |
| 7190 * All line attributes are maintained relative to the line text, not the | |
| 7191 * line index that is specified in this method call. | |
| 7192 * During text changes, when entire lines are inserted or removed, the line | |
| 7193 * attributes that are associated with the lines after the change | |
| 7194 * will "move" with their respective text. An entire line is defined as | |
| 7195 * extending from the first character on a line to the last and including the | |
| 7196 * line delimiter. | |
| 7197 * </p><p> | |
| 7198 * When two lines are joined by deleting a line delimiter, the top line | |
| 7199 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7200 * For all other text changes line attributes will remain unchanged. | |
| 7201 * | |
| 7202 * @param startLine first line the alignment is applied to, 0 based | |
| 7203 * @param lineCount number of lines the alignment applies to. | |
| 7204 * @param alignment line alignment | |
| 7205 * | |
| 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 * @exception IllegalArgumentException <ul> | |
| 7211 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7212 * </ul> | |
| 7213 * @see #setAlignment(int) | |
| 7214 * @since 3.2 | |
| 7215 */ | |
| 7216 public void setLineAlignment(int startLine, int lineCount, int alignment) { | |
| 7217 checkWidget(); | |
| 7218 if (isListening(LineGetStyle)) return; | |
| 7219 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7220 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7221 } | |
| 7222 | |
| 7223 renderer.setLineAlignment(startLine, lineCount, alignment); | |
| 7224 resetCache(startLine, lineCount); | |
| 7225 redrawLines(startLine, lineCount); | |
| 7226 int caretLine = getCaretLine(); | |
| 7227 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7228 setCaretLocation(); | |
| 7229 } | |
| 7230 } | |
| 7231 /** | |
| 7232 * Sets the background color of the specified lines. | |
| 7233 * <p> | |
| 7234 * The background color is drawn for the width of the widget. All | |
| 7235 * line background colors are discarded when setText is called. | |
| 7236 * The text background color if defined in a StyleRange overlays the | |
| 7237 * line background color. | |
| 7238 * </p><p> | |
| 7239 * Should not be called if a LineBackgroundListener has been set since the | |
| 7240 * listener maintains the line backgrounds. | |
| 7241 * </p><p> | |
| 7242 * All line attributes are maintained relative to the line text, not the | |
| 7243 * line index that is specified in this method call. | |
| 7244 * During text changes, when entire lines are inserted or removed, the line | |
| 7245 * attributes that are associated with the lines after the change | |
| 7246 * will "move" with their respective text. An entire line is defined as | |
| 7247 * extending from the first character on a line to the last and including the | |
| 7248 * line delimiter. | |
| 7249 * </p><p> | |
| 7250 * When two lines are joined by deleting a line delimiter, the top line | |
| 7251 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7252 * For all other text changes line attributes will remain unchanged. | |
| 7253 * </p> | |
| 7254 * | |
| 7255 * @param startLine first line the color is applied to, 0 based | |
| 7256 * @param lineCount number of lines the color applies to. | |
| 7257 * @param background line background color | |
| 7258 * @exception DWTException <ul> | |
| 7259 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7260 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7261 * </ul> | |
| 7262 * @exception IllegalArgumentException <ul> | |
| 7263 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7264 * </ul> | |
| 7265 */ | |
| 7266 public void setLineBackground(int startLine, int lineCount, Color background) { | |
| 7267 checkWidget(); | |
| 7268 if (isListening(LineGetBackground)) return; | |
| 7269 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7270 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7271 } | |
| 7272 if (background !is null) { | |
| 7273 renderer.setLineBackground(startLine, lineCount, background); | |
| 7274 } else { | |
| 7275 renderer.clearLineBackground(startLine, lineCount); | |
| 7276 } | |
| 7277 redrawLines(startLine, lineCount); | |
| 7278 } | |
| 7279 /** | |
| 7280 * Sets the bullet of the specified lines. | |
| 7281 * <p> | |
| 7282 * Should not be called if a LineStyleListener has been set since the listener | |
| 7283 * maintains the line attributes. | |
| 7284 * </p><p> | |
| 7285 * All line attributes are maintained relative to the line text, not the | |
| 7286 * line index that is specified in this method call. | |
| 7287 * During text changes, when entire lines are inserted or removed, the line | |
| 7288 * attributes that are associated with the lines after the change | |
| 7289 * will "move" with their respective text. An entire line is defined as | |
| 7290 * extending from the first character on a line to the last and including the | |
| 7291 * line delimiter. | |
| 7292 * </p><p> | |
| 7293 * When two lines are joined by deleting a line delimiter, the top line | |
| 7294 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7295 * For all other text changes line attributes will remain unchanged. | |
| 7296 * </p> | |
| 7297 * | |
| 7298 * @param startLine first line the bullet is applied to, 0 based | |
| 7299 * @param lineCount number of lines the bullet applies to. | |
| 7300 * @param bullet line bullet | |
| 7301 * | |
| 7302 * @exception DWTException <ul> | |
| 7303 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7304 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7305 * </ul> | |
| 7306 * @exception IllegalArgumentException <ul> | |
| 7307 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7308 * </ul> | |
| 7309 * @since 3.2 | |
| 7310 */ | |
| 7311 public void setLineBullet(int startLine, int lineCount, Bullet bullet) { | |
| 7312 checkWidget(); | |
| 7313 if (isListening(LineGetStyle)) return; | |
| 7314 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7315 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7316 } | |
| 7317 | |
| 7318 renderer.setLineBullet(startLine, lineCount, bullet); | |
| 7319 resetCache(startLine, lineCount); | |
| 7320 redrawLines(startLine, lineCount); | |
| 7321 int caretLine = getCaretLine(); | |
| 7322 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7323 setCaretLocation(); | |
| 7324 } | |
| 7325 } | |
| 7326 void setVariableLineHeight () { | |
| 7327 if (!fixedLineHeight) return; | |
| 7328 fixedLineHeight = false; | |
| 7329 renderer.calculateIdle(); | |
| 7330 } | |
| 7331 /** | |
| 7332 * Sets the indent of the specified lines. | |
| 7333 * <p> | |
| 7334 * Should not be called if a LineStyleListener has been set since the listener | |
| 7335 * maintains the line attributes. | |
| 7336 * </p><p> | |
| 7337 * All line attributes are maintained relative to the line text, not the | |
| 7338 * line index that is specified in this method call. | |
| 7339 * During text changes, when entire lines are inserted or removed, the line | |
| 7340 * attributes that are associated with the lines after the change | |
| 7341 * will "move" with their respective text. An entire line is defined as | |
| 7342 * extending from the first character on a line to the last and including the | |
| 7343 * line delimiter. | |
| 7344 * </p><p> | |
| 7345 * When two lines are joined by deleting a line delimiter, the top line | |
| 7346 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7347 * For all other text changes line attributes will remain unchanged. | |
| 7348 * </p> | |
| 7349 * | |
| 7350 * @param startLine first line the indent is applied to, 0 based | |
| 7351 * @param lineCount number of lines the indent applies to. | |
| 7352 * @param indent line indent | |
| 7353 * | |
| 7354 * @exception DWTException <ul> | |
| 7355 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7356 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7357 * </ul> | |
| 7358 * @exception IllegalArgumentException <ul> | |
| 7359 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7360 * </ul> | |
| 7361 * @see #setIndent(int) | |
| 7362 * @since 3.2 | |
| 7363 */ | |
| 7364 public void setLineIndent(int startLine, int lineCount, int indent) { | |
| 7365 checkWidget(); | |
| 7366 if (isListening(LineGetStyle)) return; | |
| 7367 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7368 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7369 } | |
| 7370 | |
| 7371 renderer.setLineIndent(startLine, lineCount, indent); | |
| 7372 resetCache(startLine, lineCount); | |
| 7373 redrawLines(startLine, lineCount); | |
| 7374 int caretLine = getCaretLine(); | |
| 7375 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7376 setCaretLocation(); | |
| 7377 } | |
| 7378 } | |
| 7379 /** | |
| 7380 * Sets the justify of the specified lines. | |
| 7381 * <p> | |
| 7382 * Should not be called if a LineStyleListener has been set since the listener | |
| 7383 * maintains the line attributes. | |
| 7384 * </p><p> | |
| 7385 * All line attributes are maintained relative to the line text, not the | |
| 7386 * line index that is specified in this method call. | |
| 7387 * During text changes, when entire lines are inserted or removed, the line | |
| 7388 * attributes that are associated with the lines after the change | |
| 7389 * will "move" with their respective text. An entire line is defined as | |
| 7390 * extending from the first character on a line to the last and including the | |
| 7391 * line delimiter. | |
| 7392 * </p><p> | |
| 7393 * When two lines are joined by deleting a line delimiter, the top line | |
| 7394 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7395 * For all other text changes line attributes will remain unchanged. | |
| 7396 * </p> | |
| 7397 * | |
| 7398 * @param startLine first line the justify is applied to, 0 based | |
| 7399 * @param lineCount number of lines the justify applies to. | |
| 7400 * @param justify true if lines should be justified | |
| 7401 * | |
| 7402 * @exception DWTException <ul> | |
| 7403 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7404 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7405 * </ul> | |
| 7406 * @exception IllegalArgumentException <ul> | |
| 7407 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7408 * </ul> | |
| 7409 * @see #setJustify(bool) | |
| 7410 * @since 3.2 | |
| 7411 */ | |
| 7412 public void setLineJustify(int startLine, int lineCount, bool justify) { | |
| 7413 checkWidget(); | |
| 7414 if (isListening(LineGetStyle)) return; | |
| 7415 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7416 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7417 } | |
| 7418 | |
| 7419 renderer.setLineJustify(startLine, lineCount, justify); | |
| 7420 resetCache(startLine, lineCount); | |
| 7421 redrawLines(startLine, lineCount); | |
| 7422 int caretLine = getCaretLine(); | |
| 7423 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7424 setCaretLocation(); | |
| 7425 } | |
| 7426 } | |
| 7427 /** | |
| 7428 * Sets the line spacing of the widget. The line spacing applies for all lines. | |
| 7429 * | |
| 7430 * @param lineSpacing the line spacing | |
| 7431 * @exception DWTException <ul> | |
| 7432 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7433 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7434 * </ul> | |
| 7435 * @since 3.2 | |
| 7436 */ | |
| 7437 public void setLineSpacing(int lineSpacing) { | |
| 7438 checkWidget(); | |
| 7439 if (this.lineSpacing is lineSpacing || lineSpacing < 0) return; | |
| 7440 this.lineSpacing = lineSpacing; | |
| 7441 setVariableLineHeight(); | |
| 7442 resetCache(0, content.getLineCount()); | |
| 7443 setCaretLocation(); | |
| 7444 super.redraw(); | |
| 7445 } | |
| 7446 void setMargins (int leftMargin, int topMargin, int rightMargin, int bottomMargin) { | |
| 7447 checkWidget(); | |
| 7448 this.leftMargin = leftMargin; | |
| 7449 this.topMargin = topMargin; | |
| 7450 this.rightMargin = rightMargin; | |
| 7451 this.bottomMargin = bottomMargin; | |
| 7452 setCaretLocation(); | |
| 7453 } | |
| 7454 /** | |
| 7455 * Flips selection anchor based on word selection direction. | |
| 7456 */ | |
| 7457 void setMouseWordSelectionAnchor() { | |
| 7458 if (clickCount > 1) { | |
| 7459 if (caretOffset < doubleClickSelection.x) { | |
| 7460 selectionAnchor = doubleClickSelection.y; | |
| 7461 } else if (caretOffset > doubleClickSelection.y) { | |
| 7462 selectionAnchor = doubleClickSelection.x; | |
| 7463 } | |
| 7464 } | |
| 7465 } | |
| 7466 /** | |
| 7467 * Sets the orientation of the receiver, which must be one | |
| 7468 * of the constants <code>DWT.LEFT_TO_RIGHT</code> or <code>DWT.RIGHT_TO_LEFT</code>. | |
| 7469 * | |
| 7470 * @param orientation new orientation style | |
| 7471 * | |
| 7472 * @exception DWTException <ul> | |
| 7473 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7474 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7475 * </ul> | |
| 7476 * | |
| 7477 * @since 2.1.2 | |
| 7478 */ | |
| 7479 public void setOrientation(int orientation) { | |
| 7480 if ((orientation & (DWT.RIGHT_TO_LEFT | DWT.LEFT_TO_RIGHT)) is 0) { | |
| 7481 return; | |
| 7482 } | |
| 7483 if ((orientation & DWT.RIGHT_TO_LEFT) !is 0 && (orientation & DWT.LEFT_TO_RIGHT) !is 0) { | |
| 7484 return; | |
| 7485 } | |
| 7486 if ((orientation & DWT.RIGHT_TO_LEFT) !is 0 && isMirrored()) { | |
| 7487 return; | |
| 7488 } | |
| 7489 if ((orientation & DWT.LEFT_TO_RIGHT) !is 0 && !isMirrored()) { | |
| 7490 return; | |
| 7491 } | |
| 7492 if (!BidiUtil.setOrientation(handle, orientation)) { | |
| 7493 return; | |
| 7494 } | |
| 7495 isMirrored_ = (orientation & DWT.RIGHT_TO_LEFT) !is 0; | |
| 7496 caretDirection = DWT.NULL; | |
| 7497 resetCache(0, content.getLineCount()); | |
| 7498 setCaretLocation(); | |
| 7499 keyActionMap = null; | |
| 7500 createKeyBindings(); | |
| 7501 super.redraw(); | |
| 7502 } | |
| 7503 /** | |
| 7504 * Adjusts the maximum and the page size of the scroll bars to | |
| 7505 * reflect content width/length changes. | |
| 7506 * | |
| 7507 * @param vertical indicates if the vertical scrollbar also needs to be set | |
| 7508 */ | |
| 7509 void setScrollBars(bool vertical) { | |
| 7510 int inactive = 1; | |
| 7511 if (vertical || !isFixedLineHeight()) { | |
| 7512 ScrollBar verticalBar = getVerticalBar(); | |
| 7513 if (verticalBar !is null) { | |
| 7514 int maximum = renderer.getHeight(); | |
| 7515 // only set the real values if the scroll bar can be used | |
| 7516 // (ie. because the thumb size is less than the scroll maximum) | |
| 7517 // avoids flashing on Motif, fixes 1G7RE1J and 1G5SE92 | |
| 7518 if (clientAreaHeight < maximum) { | |
| 7519 verticalBar.setMaximum(maximum); | |
| 7520 verticalBar.setThumb(clientAreaHeight); | |
| 7521 verticalBar.setPageIncrement(clientAreaHeight); | |
| 7522 } else if (verticalBar.getThumb() !is inactive || verticalBar.getMaximum() !is inactive) { | |
| 7523 verticalBar.setValues( | |
| 7524 verticalBar.getSelection(), | |
| 7525 verticalBar.getMinimum(), | |
| 7526 inactive, | |
| 7527 inactive, | |
| 7528 verticalBar.getIncrement(), | |
| 7529 inactive); | |
| 7530 } | |
| 7531 } | |
| 7532 } | |
| 7533 ScrollBar horizontalBar = getHorizontalBar(); | |
| 7534 if (horizontalBar !is null && horizontalBar.getVisible()) { | |
| 7535 int maximum = renderer.getWidth(); | |
| 7536 // only set the real values if the scroll bar can be used | |
| 7537 // (ie. because the thumb size is less than the scroll maximum) | |
| 7538 // avoids flashing on Motif, fixes 1G7RE1J and 1G5SE92 | |
| 7539 if (clientAreaWidth < maximum) { | |
| 7540 horizontalBar.setMaximum(maximum); | |
| 7541 horizontalBar.setThumb(clientAreaWidth - leftMargin - rightMargin); | |
| 7542 horizontalBar.setPageIncrement(clientAreaWidth - leftMargin - rightMargin); | |
| 7543 } else if (horizontalBar.getThumb() !is inactive || horizontalBar.getMaximum() !is inactive) { | |
| 7544 horizontalBar.setValues( | |
| 7545 horizontalBar.getSelection(), | |
| 7546 horizontalBar.getMinimum(), | |
| 7547 inactive, | |
| 7548 inactive, | |
| 7549 horizontalBar.getIncrement(), | |
| 7550 inactive); | |
| 7551 } | |
| 7552 } | |
| 7553 } | |
| 7554 /** | |
| 7555 * Sets the selection to the given position and scrolls it into view. Equivalent to setSelection(start,start). | |
| 7556 * | |
| 7557 * @param start new caret position | |
| 7558 * @see #setSelection(int,int) | |
| 7559 * @exception DWTException <ul> | |
| 7560 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7561 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7562 * </ul> | |
| 7563 * @exception IllegalArgumentException <ul> | |
| 7564 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7565 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7566 * </ul> | |
| 7567 */ | |
| 7568 public void setSelection(int start) { | |
| 7569 // checkWidget test done in setSelectionRange | |
| 7570 setSelection(start, start); | |
| 7571 } | |
| 7572 /** | |
| 7573 * Sets the selection and scrolls it into view. | |
| 7574 * <p> | |
| 7575 * Indexing is zero based. Text selections are specified in terms of | |
| 7576 * caret positions. In a text widget that contains N characters, there are | |
| 7577 * N+1 caret positions, ranging from 0..N | |
| 7578 * </p> | |
| 7579 * | |
| 7580 * @param point x=selection start offset, y=selection end offset | |
| 7581 * The caret will be placed at the selection start when x > y. | |
| 7582 * @see #setSelection(int,int) | |
| 7583 * @exception DWTException <ul> | |
| 7584 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7585 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7586 * </ul> | |
| 7587 * @exception IllegalArgumentException <ul> | |
| 7588 * <li>ERROR_NULL_ARGUMENT when point is null</li> | |
| 7589 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7590 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7591 * </ul> | |
| 7592 */ | |
| 7593 public void setSelection(Point point) { | |
| 7594 checkWidget(); | |
| 7595 if (point is null) DWT.error (DWT.ERROR_NULL_ARGUMENT); | |
| 7596 setSelection(point.x, point.y); | |
| 7597 } | |
| 7598 /** | |
| 7599 * Sets the receiver's selection background color to the color specified | |
| 7600 * by the argument, or to the default system color for the control | |
| 7601 * if the argument is null. | |
| 7602 * | |
| 7603 * @param color the new color (or null) | |
| 7604 * | |
| 7605 * @exception IllegalArgumentException <ul> | |
| 7606 * <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li> | |
| 7607 * </ul> | |
| 7608 * @exception DWTException <ul> | |
| 7609 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7610 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7611 * </ul> | |
| 7612 * @since 2.1 | |
| 7613 */ | |
| 7614 public void setSelectionBackground (Color color) { | |
| 7615 checkWidget (); | |
| 7616 if (color !is null) { | |
| 7617 if (color.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7618 } | |
| 7619 selectionBackground = color; | |
| 7620 super.redraw(); | |
| 7621 } | |
| 7622 /** | |
| 7623 * Sets the receiver's selection foreground color to the color specified | |
| 7624 * by the argument, or to the default system color for the control | |
| 7625 * if the argument is null. | |
| 7626 * <p> | |
| 7627 * Note that this is a <em>HINT</em>. Some platforms do not allow the application | |
| 7628 * to change the selection foreground color. | |
| 7629 * </p> | |
| 7630 * @param color the new color (or null) | |
| 7631 * | |
| 7632 * @exception IllegalArgumentException <ul> | |
| 7633 * <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li> | |
| 7634 * </ul> | |
| 7635 * @exception DWTException <ul> | |
| 7636 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7637 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7638 * </ul> | |
| 7639 * @since 2.1 | |
| 7640 */ | |
| 7641 public void setSelectionForeground (Color color) { | |
| 7642 checkWidget (); | |
| 7643 if (color !is null) { | |
| 7644 if (color.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7645 } | |
| 7646 selectionForeground = color; | |
| 7647 super.redraw(); | |
| 7648 } | |
| 7649 /** | |
| 7650 * Sets the selection and scrolls it into view. | |
| 7651 * <p> | |
| 7652 * Indexing is zero based. Text selections are specified in terms of | |
| 7653 * caret positions. In a text widget that contains N characters, there are | |
| 7654 * N+1 caret positions, ranging from 0..N | |
| 7655 * </p> | |
| 7656 * | |
| 7657 * @param start selection start offset. The caret will be placed at the | |
| 7658 * selection start when start > end. | |
| 7659 * @param end selection end offset | |
| 7660 * @see #setSelectionRange(int,int) | |
| 7661 * @exception DWTException <ul> | |
| 7662 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7663 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7664 * </ul> | |
| 7665 * @exception IllegalArgumentException <ul> | |
| 7666 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7667 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7668 * </ul> | |
| 7669 */ | |
| 7670 public void setSelection(int start, int end) { | |
| 7671 setSelectionRange(start, end - start); | |
| 7672 showSelection(); | |
| 7673 } | |
| 7674 /** | |
| 7675 * Sets the selection. | |
| 7676 * <p> | |
| 7677 * The new selection may not be visible. Call showSelection to scroll | |
| 7678 * the selection into view. | |
| 7679 * </p> | |
| 7680 * | |
| 7681 * @param start offset of the first selected character, start >= 0 must be true. | |
| 7682 * @param length number of characters to select, 0 <= start + length | |
| 7683 * <= getCharCount() must be true. | |
| 7684 * A negative length places the caret at the selection start. | |
| 7685 * @param sendEvent a Selection event is sent when set to true and when | |
| 7686 * the selection is reset. | |
| 7687 */ | |
| 7688 void setSelection(int start, int length, bool sendEvent) { | |
| 7689 int end = start + length; | |
| 7690 if (start > end) { | |
| 7691 int temp = end; | |
| 7692 end = start; | |
| 7693 start = temp; | |
| 7694 } | |
| 7695 // is the selection range different or is the selection direction | |
| 7696 // different? | |
| 7697 if (selection.x !is start || selection.y !is end || | |
| 7698 (length > 0 && selectionAnchor !is selection.x) || | |
| 7699 (length < 0 && selectionAnchor !is selection.y)) { | |
| 7700 clearSelection(sendEvent); | |
| 7701 if (length < 0) { | |
| 7702 selectionAnchor = selection.y = end; | |
| 7703 caretOffset = selection.x = start; | |
| 7704 } else { | |
| 7705 selectionAnchor = selection.x = start; | |
| 7706 caretOffset = selection.y = end; | |
| 7707 } | |
| 7708 internalRedrawRange(selection.x, selection.y - selection.x); | |
| 7709 } | |
| 7710 } | |
| 7711 /** | |
| 7712 * Sets the selection. | |
| 7713 * <p> | |
| 7714 * The new selection may not be visible. Call showSelection to scroll the selection | |
| 7715 * into view. A negative length places the caret at the visual start of the selection. | |
| 7716 * </p> | |
| 7717 * | |
| 7718 * @param start offset of the first selected character | |
| 7719 * @param length number of characters to select | |
| 7720 * | |
| 7721 * @exception DWTException <ul> | |
| 7722 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7723 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7724 * </ul> | |
| 7725 * @exception IllegalArgumentException <ul> | |
| 7726 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7727 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7728 * </ul> | |
| 7729 */ | |
| 7730 public void setSelectionRange(int start, int length) { | |
| 7731 checkWidget(); | |
| 7732 int contentLength = getCharCount(); | |
| 7733 start = Math.max(0, Math.min (start, contentLength)); | |
| 7734 int end = start + length; | |
| 7735 if (end < 0) { | |
| 7736 length = -start; | |
| 7737 } else { | |
| 7738 if (end > contentLength) length = contentLength - start; | |
| 7739 } | |
| 7740 if (isLineDelimiter(start) || isLineDelimiter(start + length)) { | |
| 7741 // the start offset or end offset of the selection range is inside a | |
| 7742 // multi byte line delimiter. This is an illegal operation and an exception | |
| 7743 // is thrown. Fixes 1GDKK3R | |
| 7744 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7745 } | |
| 7746 setSelection(start, length, false); | |
| 7747 setCaretLocation(); | |
| 7748 } | |
| 7749 /** | |
| 7750 * Adds the specified style. | |
| 7751 * <p> | |
| 7752 * The new style overwrites existing styles for the specified range. | |
| 7753 * Existing style ranges are adjusted if they partially overlap with | |
| 7754 * the new style. To clear an individual style, call setStyleRange | |
| 7755 * with a StyleRange that has null attributes. | |
| 7756 * </p><p> | |
| 7757 * Should not be called if a LineStyleListener has been set since the | |
| 7758 * listener maintains the styles. | |
| 7759 * </p> | |
| 7760 * | |
| 7761 * @param range StyleRange object containing the style information. | |
| 7762 * Overwrites the old style in the given range. May be null to delete | |
| 7763 * all styles. | |
| 7764 * @exception DWTException <ul> | |
| 7765 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7766 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7767 * </ul> | |
| 7768 * @exception IllegalArgumentException <ul> | |
| 7769 * <li>ERROR_INVALID_RANGE when the style range is outside the valid range (> getCharCount())</li> | |
| 7770 * </ul> | |
| 7771 */ | |
| 7772 public void setStyleRange(StyleRange range) { | |
| 7773 checkWidget(); | |
| 7774 if (isListening(LineGetStyle)) return; | |
| 7775 if (range !is null) { | |
| 7776 if (range.isUnstyled()) { | |
| 7777 setStyleRanges(range.start, range.length, null, null, false); | |
| 7778 } else { | |
| 7779 setStyleRanges(range.start, 0, null, [range], false); | |
| 7780 } | |
| 7781 } else { | |
| 7782 setStyleRanges(0, 0, null, null, true); | |
| 7783 } | |
| 7784 } | |
| 7785 /** | |
| 7786 * Clears the styles in the range specified by <code>start</code> and | |
| 7787 * <code>length</code> and adds the new styles. | |
| 7788 * <p> | |
| 7789 * The ranges array contains start and length pairs. Each pair refers to | |
| 7790 * the corresponding style in the styles array. For example, the pair | |
| 7791 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 7792 * at styles[n/2]. The range fields within each StyleRange are ignored. | |
| 7793 * If ranges or styles is null, the specified range is cleared. | |
| 7794 * </p><p> | |
| 7795 * Note: It is expected that the same instance of a StyleRange will occur | |
| 7796 * multiple times within the styles array, reducing memory usage. | |
| 7797 * </p><p> | |
| 7798 * Should not be called if a LineStyleListener has been set since the | |
| 7799 * listener maintains the styles. | |
| 7800 * </p> | |
| 7801 * | |
| 7802 * @param start offset of first character where styles will be deleted | |
| 7803 * @param length length of the range to delete styles in | |
| 7804 * @param ranges the array of ranges. The ranges must not overlap and must be in order. | |
| 7805 * @param styles the array of StyleRanges. The range fields within the StyleRange are unused. | |
| 7806 * | |
| 7807 * @exception DWTException <ul> | |
| 7808 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7809 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7810 * </ul> | |
| 7811 * @exception IllegalArgumentException <ul> | |
| 7812 * <li>ERROR_NULL_ARGUMENT when an element in the styles array is null</li> | |
| 7813 * <li>ERROR_INVALID_RANGE when the number of ranges and style do not match (ranges.length * 2 is styles.length)</li> | |
| 7814 * <li>ERROR_INVALID_RANGE when a range is outside the valid range (> getCharCount() or less than zero)</li> | |
| 7815 * <li>ERROR_INVALID_RANGE when a range overlaps</li> | |
| 7816 * </ul> | |
| 7817 * | |
| 7818 * @since 3.2 | |
| 7819 */ | |
| 7820 public void setStyleRanges(int start, int length, int[] ranges, StyleRange[] styles) { | |
| 7821 checkWidget(); | |
| 7822 if (isListening(LineGetStyle)) return; | |
| 7823 if (ranges is null || styles is null) { | |
| 7824 setStyleRanges(start, length, null, null, false); | |
| 7825 } else { | |
| 7826 setStyleRanges(start, length, ranges, styles, false); | |
| 7827 } | |
| 7828 } | |
| 7829 /** | |
| 7830 * Sets styles to be used for rendering the widget content. | |
| 7831 * <p> | |
| 7832 * All styles in the widget will be replaced with the given set of ranges and styles. | |
| 7833 * The ranges array contains start and length pairs. Each pair refers to | |
| 7834 * the corresponding style in the styles array. For example, the pair | |
| 7835 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 7836 * at styles[n/2]. The range fields within each StyleRange are ignored. | |
| 7837 * If either argument is null, the styles are cleared. | |
| 7838 * </p><p> | |
| 7839 * Note: It is expected that the same instance of a StyleRange will occur | |
| 7840 * multiple times within the styles array, reducing memory usage. | |
| 7841 * </p><p> | |
| 7842 * Should not be called if a LineStyleListener has been set since the | |
| 7843 * listener maintains the styles. | |
| 7844 * </p> | |
| 7845 * | |
| 7846 * @param ranges the array of ranges. The ranges must not overlap and must be in order. | |
| 7847 * @param styles the array of StyleRanges. The range fields within the StyleRange are unused. | |
| 7848 * | |
| 7849 * @exception DWTException <ul> | |
| 7850 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7851 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7852 * </ul> | |
| 7853 * @exception IllegalArgumentException <ul> | |
| 7854 * <li>ERROR_NULL_ARGUMENT when an element in the styles array is null</li> | |
| 7855 * <li>ERROR_INVALID_RANGE when the number of ranges and style do not match (ranges.length * 2 is styles.length)</li> | |
| 7856 * <li>ERROR_INVALID_RANGE when a range is outside the valid range (> getCharCount() or less than zero)</li> | |
| 7857 * <li>ERROR_INVALID_RANGE when a range overlaps</li> | |
| 7858 * </ul> | |
| 7859 * | |
| 7860 * @since 3.2 | |
| 7861 */ | |
| 7862 public void setStyleRanges(int[] ranges, StyleRange[] styles) { | |
| 7863 checkWidget(); | |
| 7864 if (isListening(LineGetStyle)) return; | |
| 7865 if (ranges is null || styles is null) { | |
| 7866 setStyleRanges(0, 0, null, null, true); | |
| 7867 } else { | |
| 7868 setStyleRanges(0, 0, ranges, styles, true); | |
| 7869 } | |
| 7870 } | |
| 7871 void setStyleRanges(int start, int length, int[] ranges, StyleRange[] styles, bool reset) { | |
| 7872 int charCount = content.getCharCount(); | |
| 7873 int end = start + length; | |
| 7874 if (start > end || start < 0) { | |
| 7875 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 7876 } | |
| 7877 if (styles !is null) { | |
| 7878 if (end > charCount) { | |
| 7879 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 7880 } | |
| 7881 if (ranges !is null) { | |
| 7882 if (ranges.length !is styles.length << 1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7883 } | |
| 7884 int lastOffset = 0; | |
| 7885 bool variableHeight = false; | |
| 7886 for (int i = 0; i < styles.length; i ++) { | |
| 7887 if (styles[i] is null) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7888 int rangeStart, rangeLength; | |
| 7889 if (ranges !is null) { | |
| 7890 rangeStart = ranges[i << 1]; | |
| 7891 rangeLength = ranges[(i << 1) + 1]; | |
| 7892 } else { | |
| 7893 rangeStart = styles[i].start; | |
| 7894 rangeLength = styles[i].length; | |
| 7895 } | |
| 7896 if (rangeLength < 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7897 if (!(0 <= rangeStart && rangeStart + rangeLength <= charCount)) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7898 if (lastOffset > rangeStart) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7899 variableHeight |= styles[i].isVariableHeight(); | |
| 7900 lastOffset = rangeStart + rangeLength; | |
| 7901 } | |
| 7902 if (variableHeight) setVariableLineHeight(); | |
| 7903 } | |
| 7904 int rangeStart = start, rangeEnd = end; | |
| 7905 if (styles !is null && styles.length > 0) { | |
| 7906 if (ranges !is null) { | |
| 7907 rangeStart = ranges[0]; | |
| 7908 rangeEnd = ranges[ranges.length - 2] + ranges[ranges.length - 1]; | |
| 7909 } else { | |
| 7910 rangeStart = styles[0].start; | |
| 7911 rangeEnd = styles[styles.length - 1].start + styles[styles.length - 1].length; | |
| 7912 } | |
| 7913 } | |
| 7914 int lastLineBottom = 0; | |
| 7915 if (!isFixedLineHeight() && !reset) { | |
| 7916 int lineEnd = content.getLineAtOffset(Math.max(end, rangeEnd)); | |
| 7917 int partialTopIndex = getPartialTopIndex(); | |
| 7918 int partialBottomIndex = getPartialBottomIndex(); | |
| 7919 if (partialTopIndex <= lineEnd && lineEnd <= partialBottomIndex) { | |
| 7920 lastLineBottom = getLinePixel(lineEnd + 1); | |
| 7921 } | |
| 7922 } | |
| 7923 if (reset) { | |
| 7924 renderer.setStyleRanges(null, null); | |
| 7925 } else { | |
| 7926 renderer.updateRanges(start, length, length); | |
| 7927 } | |
| 7928 if (styles !is null && styles.length > 0) { | |
| 7929 renderer.setStyleRanges(ranges, styles); | |
| 7930 } | |
| 7931 if (reset) { | |
| 7932 resetCache(0, content.getLineCount()); | |
| 7933 super.redraw(); | |
| 7934 } else { | |
| 7935 int lineStart = content.getLineAtOffset(Math.min(start, rangeStart)); | |
| 7936 int lineEnd = content.getLineAtOffset(Math.max(end, rangeEnd)); | |
| 7937 resetCache(lineStart, lineEnd - lineStart + 1); | |
| 7938 int partialTopIndex = getPartialTopIndex(); | |
| 7939 int partialBottomIndex = getPartialBottomIndex(); | |
| 7940 if (!(lineStart > partialBottomIndex || lineEnd < partialTopIndex)) { | |
| 7941 int y = 0; | |
| 7942 int height = clientAreaHeight; | |
| 7943 if (partialTopIndex <= lineStart && lineStart <= partialBottomIndex) { | |
| 7944 int lineTop = Math.max(y, getLinePixel(lineStart)); | |
| 7945 y = lineTop; | |
| 7946 height -= lineTop; | |
| 7947 } | |
| 7948 if (partialTopIndex <= lineEnd && lineEnd <= partialBottomIndex) { | |
| 7949 int newLastLineBottom = getLinePixel(lineEnd + 1); | |
| 7950 if (!isFixedLineHeight()) { | |
| 7951 scrollText(lastLineBottom, newLastLineBottom); | |
| 7952 } | |
| 7953 height = newLastLineBottom - y; | |
| 7954 } | |
| 7955 super.redraw(0, y, clientAreaWidth, height, false); | |
| 7956 } | |
| 7957 } | |
| 7958 setCaretLocation(); | |
| 7959 } | |
| 7960 /** | |
| 7961 * Sets styles to be used for rendering the widget content. All styles | |
| 7962 * in the widget will be replaced with the given set of styles. | |
| 7963 * <p> | |
| 7964 * Note: Because a StyleRange includes the start and length, the | |
| 7965 * same instance cannot occur multiple times in the array of styles. | |
| 7966 * If the same style attributes, such as font and color, occur in | |
| 7967 * multiple StyleRanges, <code>setStyleRanges(int[], StyleRange[])</code> | |
| 7968 * can be used to share styles and reduce memory usage. | |
| 7969 * </p><p> | |
| 7970 * Should not be called if a LineStyleListener has been set since the | |
| 7971 * listener maintains the styles. | |
| 7972 * </p> | |
| 7973 * | |
| 7974 * @param ranges StyleRange objects containing the style information. | |
| 7975 * The ranges should not overlap. The style rendering is undefined if | |
| 7976 * the ranges do overlap. Must not be null. The styles need to be in order. | |
| 7977 * @exception DWTException <ul> | |
| 7978 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7979 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7980 * </ul> | |
| 7981 * @exception IllegalArgumentException <ul> | |
| 7982 * <li>ERROR_NULL_ARGUMENT when the list of ranges is null</li> | |
| 7983 * <li>ERROR_INVALID_RANGE when the last of the style ranges is outside the valid range (> getCharCount())</li> | |
| 7984 * </ul> | |
| 7985 * | |
| 7986 * @see #setStyleRanges(int[], StyleRange[]) | |
| 7987 */ | |
| 7988 public void setStyleRanges(StyleRange[] ranges) { | |
| 7989 checkWidget(); | |
| 7990 if (isListening(LineGetStyle)) return; | |
| 7991 if (ranges is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 7992 setStyleRanges(0, 0, null, ranges, true); | |
| 7993 } | |
| 7994 /** | |
| 7995 * Sets the tab width. | |
| 7996 * | |
| 7997 * @param tabs tab width measured in characters. | |
| 7998 * @exception DWTException <ul> | |
| 7999 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8000 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8001 * </ul> | |
| 8002 */ | |
| 8003 public void setTabs(int tabs) { | |
| 8004 checkWidget(); | |
| 8005 tabLength = tabs; | |
| 8006 renderer.setFont(null, tabs); | |
| 8007 if (caretOffset > 0) { | |
| 8008 caretOffset = 0; | |
| 8009 showCaret(); | |
| 8010 clearSelection(false); | |
| 8011 } | |
| 8012 resetCache(0, content.getLineCount()); | |
| 8013 super.redraw(); | |
| 8014 } | |
| 8015 /** | |
| 8016 * Sets the widget content. | |
| 8017 * If the widget has the DWT.SINGLE style and "text" contains more than | |
| 8018 * one line, only the first line is rendered but the text is stored | |
| 8019 * unchanged. A subsequent call to getText will return the same text | |
| 8020 * that was set. | |
| 8021 * <p> | |
| 8022 * <b>Note:</b> Only a single line of text should be set when the DWT.SINGLE | |
| 8023 * style is used. | |
| 8024 * </p> | |
| 8025 * | |
| 8026 * @param text new widget content. Replaces existing content. Line styles | |
| 8027 * that were set using StyledText API are discarded. The | |
| 8028 * current selection is also discarded. | |
| 8029 * @exception DWTException <ul> | |
| 8030 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8031 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8032 * </ul> | |
| 8033 * @exception IllegalArgumentException <ul> | |
| 8034 * <li>ERROR_NULL_ARGUMENT when string is null</li> | |
| 8035 * </ul> | |
| 8036 */ | |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
8037 public void setText(String text) { |
| 155 | 8038 checkWidget(); |
| 8039 if (text is null) { | |
| 8040 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 8041 } | |
| 8042 Event event = new Event(); | |
| 8043 event.start = 0; | |
| 8044 event.end = getCharCount(); | |
| 8045 event.text = text; | |
| 8046 event.doit = true; | |
| 8047 notifyListeners(DWT.Verify, event); | |
| 8048 if (event.doit) { | |
| 8049 StyledTextEvent styledTextEvent = null; | |
| 8050 if (isListening(ExtendedModify)) { | |
| 8051 styledTextEvent = new StyledTextEvent(content); | |
| 8052 styledTextEvent.start = event.start; | |
| 8053 styledTextEvent.end = event.start + event.text.length; | |
| 8054 styledTextEvent.text = content.getTextRange(event.start, event.end - event.start); | |
| 8055 } | |
| 8056 content.setText(event.text); | |
| 8057 sendModifyEvent(event); | |
| 8058 if (styledTextEvent !is null) { | |
| 8059 notifyListeners(ExtendedModify, styledTextEvent); | |
| 8060 } | |
| 8061 } | |
| 8062 } | |
| 8063 /** | |
| 8064 * Sets the text limit to the specified number of characters. | |
| 8065 * <p> | |
| 8066 * The text limit specifies the amount of text that | |
| 8067 * the user can type into the widget. | |
| 8068 * </p> | |
| 8069 * | |
| 8070 * @param limit the new text limit. | |
| 8071 * @exception DWTException <ul> | |
| 8072 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8073 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8074 * </ul> | |
| 8075 * @exception IllegalArgumentException <ul> | |
| 8076 * <li>ERROR_CANNOT_BE_ZERO when limit is 0</li> | |
| 8077 * </ul> | |
| 8078 */ | |
| 8079 public void setTextLimit(int limit) { | |
| 8080 checkWidget(); | |
| 8081 if (limit is 0) { | |
| 8082 DWT.error(DWT.ERROR_CANNOT_BE_ZERO); | |
| 8083 } | |
| 8084 textLimit = limit; | |
| 8085 } | |
| 8086 /** | |
| 8087 * Sets the top index. Do nothing if there is no text set. | |
| 8088 * <p> | |
| 8089 * The top index is the index of the line that is currently at the top | |
| 8090 * of the widget. The top index changes when the widget is scrolled. | |
| 8091 * Indexing starts from zero. | |
| 8092 * Note: The top index is reset to 0 when new text is set in the widget. | |
| 8093 * </p> | |
| 8094 * | |
| 8095 * @param topIndex new top index. Must be between 0 and | |
| 8096 * getLineCount() - fully visible lines per page. If no lines are fully | |
| 8097 * visible the maximum value is getLineCount() - 1. An out of range | |
| 8098 * index will be adjusted accordingly. | |
| 8099 * @exception DWTException <ul> | |
| 8100 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8101 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8102 * </ul> | |
| 8103 */ | |
| 8104 public void setTopIndex(int topIndex) { | |
| 8105 checkWidget(); | |
| 8106 if (getCharCount() is 0) { | |
| 8107 return; | |
| 8108 } | |
| 8109 int lineCount = content.getLineCount(), pixel; | |
| 8110 if (isFixedLineHeight()) { | |
| 8111 int pageSize = Math.max(1, Math.min(lineCount, getLineCountWhole())); | |
| 8112 if (topIndex < 0) { | |
| 8113 topIndex = 0; | |
| 8114 } else if (topIndex > lineCount - pageSize) { | |
| 8115 topIndex = lineCount - pageSize; | |
| 8116 } | |
| 8117 pixel = getLinePixel(topIndex); | |
| 8118 } else { | |
| 8119 topIndex = Math.max(0, Math.min(lineCount - 1, topIndex)); | |
| 8120 pixel = getLinePixel(topIndex); | |
| 8121 if (pixel > 0) { | |
| 8122 pixel = getAvailableHeightBellow(pixel); | |
| 8123 } else { | |
| 8124 pixel = getAvailableHeightAbove(pixel); | |
| 8125 } | |
| 8126 } | |
| 8127 scrollVertical(pixel, true); | |
| 8128 } | |
| 8129 /** | |
| 8130 * Sets the top pixel offset. Do nothing if there is no text set. | |
| 8131 * <p> | |
| 8132 * The top pixel offset is the vertical pixel offset of the widget. The | |
| 8133 * widget is scrolled so that the given pixel position is at the top. | |
| 8134 * The top index is adjusted to the corresponding top line. | |
| 8135 * Note: The top pixel is reset to 0 when new text is set in the widget. | |
| 8136 * </p> | |
| 8137 * | |
| 8138 * @param pixel new top pixel offset. Must be between 0 and | |
| 8139 * (getLineCount() - visible lines per page) / getLineHeight()). An out | |
| 8140 * of range offset will be adjusted accordingly. | |
| 8141 * @exception DWTException <ul> | |
| 8142 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8143 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8144 * </ul> | |
| 8145 * @since 2.0 | |
| 8146 */ | |
| 8147 public void setTopPixel(int pixel) { | |
| 8148 checkWidget(); | |
| 8149 if (getCharCount() is 0) { | |
| 8150 return; | |
| 8151 } | |
| 8152 if (pixel < 0) pixel = 0; | |
| 8153 int lineCount = content.getLineCount(); | |
| 8154 int height = clientAreaHeight - topMargin - bottomMargin; | |
| 8155 int verticalOffset = getVerticalScrollOffset(); | |
| 8156 if (isFixedLineHeight()) { | |
| 8157 int maxTopPixel = Math.max(0, lineCount * getVerticalIncrement() - height); | |
| 8158 if (pixel > maxTopPixel) pixel = maxTopPixel; | |
| 8159 pixel -= verticalOffset; | |
| 8160 } else { | |
| 8161 pixel -= verticalOffset; | |
| 8162 if (pixel > 0) { | |
| 8163 pixel = getAvailableHeightBellow(pixel); | |
| 8164 } | |
| 8165 } | |
| 8166 scrollVertical(pixel, true); | |
| 8167 } | |
| 8168 /** | |
| 8169 * Sets whether the widget wraps lines. | |
| 8170 * <p> | |
| 8171 * This overrides the creation style bit DWT.WRAP. | |
| 8172 * </p> | |
| 8173 * | |
| 8174 * @param wrap true=widget wraps lines, false=widget does not wrap lines | |
| 8175 * @since 2.0 | |
| 8176 */ | |
| 8177 public void setWordWrap(bool wrap) { | |
| 8178 checkWidget(); | |
| 8179 if ((getStyle() & DWT.SINGLE) !is 0) return; | |
| 8180 if (wordWrap is wrap) return; | |
| 8181 wordWrap = wrap; | |
| 8182 setVariableLineHeight(); | |
| 8183 resetCache(0, content.getLineCount()); | |
| 8184 horizontalScrollOffset = 0; | |
| 8185 ScrollBar horizontalBar = getHorizontalBar(); | |
| 8186 if (horizontalBar !is null) { | |
| 8187 horizontalBar.setVisible(!wordWrap); | |
| 8188 } | |
| 8189 setScrollBars(true); | |
| 8190 setCaretLocation(); | |
| 8191 super.redraw(); | |
| 8192 } | |
| 8193 bool showLocation(Rectangle rect, bool scrollPage) { | |
| 8194 int clientAreaWidth = this.clientAreaWidth - leftMargin - rightMargin; | |
| 8195 int clientAreaHeight = this.clientAreaHeight - topMargin - bottomMargin; | |
| 8196 bool scrolled = false; | |
| 8197 if (rect.y <= topMargin) { | |
| 8198 scrolled = scrollVertical(rect.y - topMargin, true); | |
| 8199 } else if (rect.y + rect.height > clientAreaHeight) { | |
| 8200 if (clientAreaHeight is 0) { | |
| 8201 scrolled = scrollVertical(rect.y, true); | |
| 8202 } else { | |
| 8203 scrolled = scrollVertical(rect.y + rect.height - clientAreaHeight, true); | |
| 8204 } | |
| 8205 } | |
| 8206 if (clientAreaWidth > 0) { | |
| 8207 int minScroll = scrollPage ? clientAreaWidth / 4 : 0; | |
| 8208 if (rect.x < leftMargin) { | |
| 8209 int scrollWidth = Math.max(leftMargin - rect.x, minScroll); | |
| 8210 int maxScroll = horizontalScrollOffset; | |
| 8211 scrolled = scrollHorizontal(-Math.min(maxScroll, scrollWidth), true); | |
| 8212 } else if (rect.x + rect.width > clientAreaWidth) { | |
| 8213 int scrollWidth = Math.max(rect.x + rect.width - clientAreaWidth, minScroll); | |
| 8214 int maxScroll = renderer.getWidth() - horizontalScrollOffset - this.clientAreaWidth; | |
| 8215 scrolled = scrollHorizontal(Math.min(maxScroll, scrollWidth), true); | |
| 8216 } | |
| 8217 } | |
| 8218 return scrolled; | |
| 8219 } | |
| 8220 /** | |
| 8221 * Sets the caret location and scrolls the caret offset into view. | |
| 8222 */ | |
| 8223 void showCaret() { | |
| 8224 Rectangle bounds = getBoundsAtOffset(caretOffset); | |
| 8225 if (!showLocation(bounds, true)) { | |
| 8226 setCaretLocation(); | |
| 8227 } | |
| 8228 } | |
| 8229 /** | |
| 8230 * Scrolls the selection into view. | |
| 8231 * <p> | |
| 8232 * The end of the selection will be scrolled into view. | |
| 8233 * Note that if a right-to-left selection exists, the end of the selection is | |
| 8234 * the visual beginning of the selection (i.e., where the caret is located). | |
| 8235 * </p> | |
| 8236 * | |
| 8237 * @exception DWTException <ul> | |
| 8238 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8239 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8240 * </ul> | |
| 8241 */ | |
| 8242 public void showSelection() { | |
| 8243 checkWidget(); | |
| 8244 // is selection from right-to-left? | |
| 8245 bool rightToLeft = caretOffset is selection.x; | |
| 8246 int startOffset, endOffset; | |
| 8247 if (rightToLeft) { | |
| 8248 startOffset = selection.y; | |
| 8249 endOffset = selection.x; | |
| 8250 } else { | |
| 8251 startOffset = selection.x; | |
| 8252 endOffset = selection.y; | |
| 8253 } | |
| 8254 | |
| 8255 Rectangle startBounds = getBoundsAtOffset(startOffset); | |
| 8256 Rectangle endBounds = getBoundsAtOffset(endOffset); | |
| 8257 | |
| 8258 // can the selection be fully displayed within the widget's visible width? | |
| 8259 int w = clientAreaWidth - leftMargin - rightMargin; | |
| 8260 bool selectionFits = rightToLeft ? startBounds.x - endBounds.x <= w : endBounds.x - startBounds.x <= w; | |
| 8261 if (selectionFits) { | |
| 8262 // show as much of the selection as possible by first showing | |
| 8263 // the start of the selection | |
| 8264 if (showLocation(startBounds, false)) { | |
| 8265 // endX value could change if showing startX caused a scroll to occur | |
| 8266 endBounds = getBoundsAtOffset(endOffset); | |
| 8267 } | |
| 8268 // the character at endOffset is not part of the selection | |
| 8269 endBounds.width = 0; | |
| 8270 showLocation(endBounds, false); | |
| 8271 } else { | |
| 8272 // just show the end of the selection since the selection start | |
| 8273 // will not be visible | |
| 8274 showLocation(endBounds, true); | |
| 8275 } | |
| 8276 } | |
| 8277 /** | |
| 8278 * Updates the selection and caret position depending on the text change. | |
| 8279 * <p> | |
| 8280 * If the selection intersects with the replaced text, the selection is | |
| 8281 * reset and the caret moved to the end of the new text. | |
| 8282 * If the selection is behind the replaced text it is moved so that the | |
| 8283 * same text remains selected. If the selection is before the replaced text | |
| 8284 * it is left unchanged. | |
| 8285 * </p> | |
| 8286 * | |
| 8287 * @param startOffset offset of the text change | |
| 8288 * @param replacedLength length of text being replaced | |
| 8289 * @param newLength length of new text | |
| 8290 */ | |
| 8291 void updateSelection(int startOffset, int replacedLength, int newLength) { | |
| 8292 if (selection.y <= startOffset) { | |
| 8293 // selection ends before text change | |
| 8294 return; | |
| 8295 } | |
| 8296 if (selection.x < startOffset) { | |
| 8297 // clear selection fragment before text change | |
| 8298 internalRedrawRange(selection.x, startOffset - selection.x); | |
| 8299 } | |
| 8300 if (selection.y > startOffset + replacedLength && selection.x < startOffset + replacedLength) { | |
| 8301 // clear selection fragment after text change. | |
| 8302 // do this only when the selection is actually affected by the | |
| 8303 // change. Selection is only affected if it intersects the change (1GDY217). | |
| 8304 int netNewLength = newLength - replacedLength; | |
| 8305 int redrawStart = startOffset + newLength; | |
| 8306 internalRedrawRange(redrawStart, selection.y + netNewLength - redrawStart); | |
| 8307 } | |
| 8308 if (selection.y > startOffset && selection.x < startOffset + replacedLength) { | |
| 8309 // selection intersects replaced text. set caret behind text change | |
| 8310 setSelection(startOffset + newLength, 0, true); | |
| 8311 } else { | |
| 8312 // move selection to keep same text selected | |
| 8313 setSelection(selection.x + newLength - replacedLength, selection.y - selection.x, true); | |
| 8314 } | |
| 8315 setCaretLocation(); | |
| 8316 } | |
| 8317 } |