Mercurial > projects > dwt-win
annotate dwt/custom/StyledText.d @ 214:a8fed3e56433
Fix link error and added missing switch defaults
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sat, 17 May 2008 19:23:59 +0200 |
| parents | 36f5cb12e1a2 |
| children | a59d51c12b42 |
| 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; | |
| 213 | 59 import dwt.widgets.IME; |
| 155 | 60 import dwt.widgets.Label; |
| 61 import dwt.widgets.Listener; | |
| 62 import dwt.widgets.ScrollBar; | |
| 63 import dwt.widgets.TypedListener; | |
| 64 import dwt.custom.StyledTextContent; | |
| 65 import dwt.custom.TextChangeListener; | |
| 66 import dwt.custom.StyledTextRenderer; | |
| 67 import dwt.custom.StyledTextPrintOptions; | |
| 68 import dwt.custom.ExtendedModifyListener; | |
| 69 import dwt.custom.BidiSegmentListener; | |
| 70 import dwt.custom.LineBackgroundListener; | |
| 71 import dwt.custom.LineStyleListener; | |
| 72 import dwt.custom.PaintObjectListener; | |
| 73 import dwt.custom.VerifyKeyListener; | |
| 74 import dwt.custom.MovementListener; | |
| 75 import dwt.custom.Bullet; | |
| 76 import dwt.custom.StyledTextEvent; | |
| 77 import dwt.custom.StyleRange; | |
| 78 import dwt.custom.TextChangedEvent; | |
| 79 import dwt.custom.TextChangingEvent; | |
| 80 import dwt.custom.DefaultContent; | |
| 81 import dwt.custom.StyledTextDropTargetEffect; | |
| 82 import dwt.custom.StyledTextListener; | |
| 83 import dwt.custom.ST; | |
| 84 import dwt.dwthelper.Runnable; | |
| 85 | |
| 86 static import tango.text.Text; | |
| 87 static import tango.text.Util; | |
| 88 static import tango.io.FileConst; | |
| 89 static import tango.text.convert.Utf; | |
| 90 import tango.util.Convert; | |
| 91 import dwt.dwthelper.utils; | |
| 92 | |
| 93 alias tango.text.Text.Text!(char) StringBuffer; | |
| 94 | |
| 95 /** | |
| 96 * A StyledText is an editable user interface object that displays lines | |
| 97 * of text. The following style attributes can be defined for the text: | |
| 98 * <ul> | |
| 99 * <li>foreground color | |
| 100 * <li>background color | |
| 101 * <li>font style (bold, italic, bold-italic, regular) | |
| 102 * <li>underline | |
| 103 * <li>strikeout | |
| 104 * </ul> | |
| 105 * <p> | |
| 106 * In addition to text style attributes, the background color of a line may | |
| 107 * be specified. | |
| 108 * </p><p> | |
| 109 * There are two ways to use this widget when specifying text style information. | |
| 110 * You may use the API that is defined for StyledText or you may define your own | |
| 111 * LineStyleListener. If you define your own listener, you will be responsible | |
| 112 * for maintaining the text style information for the widget. IMPORTANT: You may | |
| 113 * not define your own listener and use the StyledText API. The following | |
| 114 * StyledText API is not supported if you have defined a LineStyleListener: | |
| 115 * <ul> | |
| 116 * <li>getStyleRangeAtOffset(int) | |
| 117 * <li>getStyleRanges() | |
| 118 * <li>replaceStyleRanges(int,int,StyleRange[]) | |
| 119 * <li>setStyleRange(StyleRange) | |
| 120 * <li>setStyleRanges(StyleRange[]) | |
| 121 * </ul> | |
| 122 * </p><p> | |
| 123 * There are two ways to use this widget when specifying line background colors. | |
| 124 * You may use the API that is defined for StyledText or you may define your own | |
| 125 * LineBackgroundListener. If you define your own listener, you will be responsible | |
| 126 * for maintaining the line background color information for the widget. | |
| 127 * IMPORTANT: You may not define your own listener and use the StyledText API. | |
| 128 * The following StyledText API is not supported if you have defined a | |
| 129 * LineBackgroundListener: | |
| 130 * <ul> | |
| 131 * <li>getLineBackground(int) | |
| 132 * <li>setLineBackground(int,int,Color) | |
| 133 * </ul> | |
| 134 * </p><p> | |
| 135 * The content implementation for this widget may also be user-defined. To do so, | |
| 136 * you must implement the StyledTextContent interface and use the StyledText API | |
| 137 * setContent(StyledTextContent) to initialize the widget. | |
| 138 * </p><p> | |
| 139 * <dl> | |
| 140 * <dt><b>Styles:</b><dd>FULL_SELECTION, MULTI, READ_ONLY, SINGLE, WRAP | |
| 141 * <dt><b>Events:</b><dd>ExtendedModify, LineGetBackground, LineGetSegments, LineGetStyle, Modify, Selection, Verify, VerifyKey | |
| 142 * </dl> | |
| 143 * </p><p> | |
| 144 * IMPORTANT: This class is <em>not</em> intended to be subclassed. | |
| 145 * </p> | |
| 146 */ | |
| 147 public class StyledText : Canvas { | |
| 148 | |
| 149 alias Canvas.computeSize computeSize; | |
| 150 | |
| 151 static const char TAB = '\t'; | |
|
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parents:
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changeset
|
152 static const String PlatformLineDelimiter = tango.io.FileConst.FileConst.NewlineString; |
| 155 | 153 static const int BIDI_CARET_WIDTH = 3; |
| 154 static const int DEFAULT_WIDTH = 64; | |
| 155 static const int DEFAULT_HEIGHT = 64; | |
| 156 static const int V_SCROLL_RATE = 50; | |
| 157 static const int H_SCROLL_RATE = 10; | |
| 158 | |
| 159 static const int ExtendedModify = 3000; | |
| 160 static const int LineGetBackground = 3001; | |
| 161 static const int LineGetStyle = 3002; | |
| 162 static const int TextChanging = 3003; | |
| 163 static const int TextSet = 3004; | |
| 164 static const int VerifyKey = 3005; | |
| 165 static const int TextChanged = 3006; | |
| 166 static const int LineGetSegments = 3007; | |
| 167 static const int PaintObject = 3008; | |
| 168 static const int WordNext = 3009; | |
| 169 static const int WordPrevious = 3010; | |
| 170 | |
| 171 static const int PREVIOUS_OFFSET_TRAILING = 0; | |
| 172 static const int OFFSET_LEADING = 1; | |
| 173 | |
| 174 Color selectionBackground; // selection background color | |
| 175 Color selectionForeground; // selection foreground color | |
| 176 StyledTextContent content; // native content (default or user specified) | |
| 177 StyledTextRenderer renderer; | |
| 178 Listener listener; | |
| 179 TextChangeListener textChangeListener; // listener for TextChanging, TextChanged and TextSet events from StyledTextContent | |
| 180 int verticalScrollOffset = 0; // pixel based | |
| 181 int horizontalScrollOffset = 0; // pixel based | |
| 182 int topIndex = 0; // top visible line | |
| 183 int topIndexY; | |
| 184 int clientAreaHeight = 0; // the client area height. Needed to calculate content width for new visible lines during Resize callback | |
| 185 int clientAreaWidth = 0; // the client area width. Needed during Resize callback to determine if line wrap needs to be recalculated | |
| 186 int tabLength = 4; // number of characters in a tab | |
| 187 int leftMargin; | |
| 188 int topMargin; | |
| 189 int rightMargin; | |
| 190 int bottomMargin; | |
| 191 int columnX; // keep track of the horizontal caret position when changing lines/pages. Fixes bug 5935 | |
| 192 int caretOffset = 0; | |
| 193 int caretAlignment; | |
| 194 Point selection; // x and y are start and end caret offsets of selection | |
| 195 Point clipboardSelection; // x and y are start and end caret offsets of previous selection | |
| 196 int selectionAnchor; // position of selection anchor. 0 based offset from beginning of text | |
| 197 Point doubleClickSelection; // selection after last mouse double click | |
| 198 bool editable = true; | |
| 199 bool wordWrap = false; | |
| 213 | 200 bool doubleClickEnabled = true; // see getDoubleClickEnabled |
| 201 bool overwrite = false; // insert/overwrite edit mode | |
| 155 | 202 int textLimit = -1; // limits the number of characters the user can type in the widget. Unlimited by default. |
| 203 int[int] keyActionMap; | |
| 204 Color background = null; // workaround for bug 4791 | |
| 205 Color foreground = null; // | |
| 206 Clipboard clipboard; | |
| 207 int clickCount; | |
| 208 int autoScrollDirection = DWT.NULL; // the direction of autoscrolling (up, down, right, left) | |
| 209 int autoScrollDistance = 0; | |
| 210 int lastTextChangeStart; // cache data of the | |
| 211 int lastTextChangeNewLineCount; // last text changing | |
| 212 int lastTextChangeNewCharCount; // event for use in the | |
| 213 int lastTextChangeReplaceLineCount; // text changed handler | |
| 214 int lastTextChangeReplaceCharCount; | |
| 215 int lastLineBottom; // the bottom pixel of the last line been replaced | |
| 216 bool isMirrored_; | |
| 213 | 217 bool bidiColoring = false; // apply the BIDI algorithm on text segments of the same color |
| 155 | 218 Image leftCaretBitmap = null; |
| 219 Image rightCaretBitmap = null; | |
| 220 int caretDirection = DWT.NULL; | |
| 213 | 221 int caretWidth = 0; |
| 155 | 222 Caret defaultCaret = null; |
| 223 bool updateCaretDirection = true; | |
| 224 bool fixedLineHeight; | |
| 225 bool dragDetect_ = true; | |
| 213 | 226 IME ime; |
| 155 | 227 |
| 228 int alignment; | |
| 229 bool justify; | |
| 230 int indent; | |
| 231 int lineSpacing; | |
| 232 | |
| 233 const static bool IS_CARBON, IS_GTK, IS_MOTIF; | |
| 234 static this(){ | |
|
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parents:
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diff
changeset
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235 String platform = DWT.getPlatform(); |
| 155 | 236 IS_CARBON = ("carbon" == platform); |
| 237 IS_GTK = ("gtk" == platform); | |
| 238 IS_MOTIF = ("motif" == platform); | |
| 239 } | |
| 240 | |
| 241 /** | |
| 242 * The Printing class : printing of a range of text. | |
| 243 * An instance of <code>Printing</code> is returned in the | |
| 244 * StyledText#print(Printer) API. The run() method may be | |
| 245 * invoked from any thread. | |
| 246 */ | |
| 247 static class Printing : Runnable { | |
| 248 const static int LEFT = 0; // left aligned header/footer segment | |
| 249 const static int CENTER = 1; // centered header/footer segment | |
| 250 const static int RIGHT = 2; // right aligned header/footer segment | |
| 251 | |
| 252 Printer printer; | |
| 253 StyledTextRenderer printerRenderer; | |
| 254 StyledTextPrintOptions printOptions; | |
| 255 Rectangle clientArea; | |
| 256 FontData fontData; | |
| 257 Font printerFont; | |
| 258 Resource[Resource] resources; | |
| 259 int tabLength; | |
| 260 GC gc; // printer GC | |
| 261 int pageWidth; // width of a printer page in pixels | |
| 262 int startPage; // first page to print | |
| 263 int endPage; // last page to print | |
| 264 int startLine; // first (wrapped) line to print | |
| 265 int endLine; // last (wrapped) line to print | |
| 213 | 266 bool singleLine; // widget single line mode |
| 155 | 267 Point selection = null; // selected text |
| 213 | 268 bool mirrored; // indicates the printing gc should be mirrored |
| 155 | 269 int lineSpacing; |
| 270 int printMargin; | |
| 271 | |
| 272 /** | |
| 273 * Creates an instance of <code>Printing</code>. | |
| 274 * Copies the widget content and rendering data that needs | |
| 275 * to be requested from listeners. | |
| 276 * </p> | |
| 277 * @param parent StyledText widget to print. | |
| 278 * @param printer printer device to print on. | |
| 279 * @param printOptions print options | |
| 280 */ | |
| 281 this(StyledText styledText, Printer printer, StyledTextPrintOptions printOptions) { | |
| 282 this.printer = printer; | |
| 283 this.printOptions = printOptions; | |
| 284 this.mirrored = (styledText.getStyle() & DWT.MIRRORED) !is 0; | |
| 285 singleLine = styledText.isSingleLine(); | |
| 286 startPage = 1; | |
| 287 endPage = int.max; | |
| 288 PrinterData data = printer.getPrinterData(); | |
| 289 if (data.scope_ is PrinterData.PAGE_RANGE) { | |
| 290 startPage = data.startPage; | |
| 291 endPage = data.endPage; | |
| 292 if (endPage < startPage) { | |
| 293 int temp = endPage; | |
| 294 endPage = startPage; | |
| 295 startPage = temp; | |
| 296 } | |
| 297 } else if (data.scope_ is PrinterData.SELECTION) { | |
| 298 selection = styledText.getSelectionRange(); | |
| 299 } | |
| 300 printerRenderer = new StyledTextRenderer(printer, null); | |
| 301 printerRenderer.setContent(copyContent(styledText.getContent())); | |
| 302 cacheLineData(styledText); | |
| 303 } | |
| 304 /** | |
| 305 * Caches all line data that needs to be requested from a listener. | |
| 306 * </p> | |
| 307 * @param printerContent <code>StyledTextContent</code> to request | |
| 308 * line data for. | |
| 309 */ | |
| 310 void cacheLineData(StyledText styledText) { | |
| 311 StyledTextRenderer renderer = styledText.renderer; | |
| 312 renderer.copyInto(printerRenderer); | |
| 313 fontData = styledText.getFont().getFontData()[0]; | |
| 314 tabLength = styledText.tabLength; | |
| 315 int lineCount = printerRenderer.lineCount; | |
| 316 if (styledText.isListening(LineGetBackground) || (styledText.isBidi() && styledText.isListening(LineGetSegments)) || styledText.isListening(LineGetStyle)) { | |
| 317 StyledTextContent content = printerRenderer.content; | |
| 318 for (int i = 0; i < lineCount; i++) { | |
|
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parents:
197
diff
changeset
|
319 String line = content.getLine(i); |
| 155 | 320 int lineOffset = content.getOffsetAtLine(i); |
| 321 StyledTextEvent event = styledText.getLineBackgroundData(lineOffset, line); | |
| 322 if (event !is null && event.lineBackground !is null) { | |
| 323 printerRenderer.setLineBackground(i, 1, event.lineBackground); | |
| 324 } | |
| 325 if (styledText.isBidi()) { | |
| 326 int[] segments = styledText.getBidiSegments(lineOffset, line); | |
| 327 printerRenderer.setLineSegments(i, 1, segments); | |
| 328 } | |
| 329 event = styledText.getLineStyleData(lineOffset, line); | |
| 330 if (event !is null) { | |
| 331 printerRenderer.setLineIndent(i, 1, event.indent); | |
| 332 printerRenderer.setLineAlignment(i, 1, event.alignment); | |
| 333 printerRenderer.setLineJustify(i, 1, event.justify); | |
| 334 printerRenderer.setLineBullet(i, 1, event.bullet); | |
| 335 StyleRange[] styles = event.styles; | |
| 336 if (styles !is null && styles.length > 0) { | |
| 337 printerRenderer.setStyleRanges(event.ranges, styles); | |
| 338 } | |
| 339 } | |
| 340 } | |
| 341 } | |
| 342 Point screenDPI = styledText.getDisplay().getDPI(); | |
| 343 Point printerDPI = printer.getDPI(); | |
| 344 resources = null; | |
| 345 for (int i = 0; i < lineCount; i++) { | |
| 346 Color color = printerRenderer.getLineBackground(i, null); | |
| 347 if (color !is null) { | |
| 348 if (printOptions.printLineBackground) { | |
| 349 Color printerColor; | |
| 350 if ( auto p = color in resources ) { | |
| 351 printerColor = cast(Color)*p; | |
| 352 } | |
| 353 else { | |
| 354 printerColor = new Color (printer, color.getRGB()); | |
| 355 resources[color]=printerColor; | |
| 356 } | |
| 357 printerRenderer.setLineBackground(i, 1, printerColor); | |
| 358 } else { | |
| 359 printerRenderer.setLineBackground(i, 1, null); | |
| 360 } | |
| 361 } | |
| 362 int indent = printerRenderer.getLineIndent(i, 0); | |
| 363 if (indent !is 0) { | |
| 364 printerRenderer.setLineIndent(i, 1, indent * printerDPI.x / screenDPI.x); | |
| 365 } | |
| 366 } | |
| 367 StyleRange[] styles = printerRenderer.styles; | |
| 368 for (int i = 0; i < printerRenderer.styleCount; i++) { | |
| 369 StyleRange style = styles[i]; | |
| 370 Font font = style.font; | |
| 371 if (style.font !is null) { | |
| 372 Font printerFont; | |
| 373 if ( auto p = font in resources ) { | |
| 374 printerFont = cast(Font)*p; | |
| 375 } | |
| 376 else { | |
| 377 printerFont = new Font (printer, font.getFontData()); | |
| 378 resources[font]= printerFont; | |
| 379 } | |
| 380 style.font = printerFont; | |
| 381 } | |
| 382 Color color = style.foreground; | |
| 383 if (color !is null) { | |
| 384 if (printOptions.printTextForeground) { | |
| 385 Color printerColor; | |
| 386 if ( auto p = color in resources ) { | |
| 387 printerColor = cast(Color)*p; | |
| 388 } | |
| 389 else { | |
| 390 printerColor = new Color (printer, color.getRGB()); | |
| 391 resources[color]=printerColor; | |
| 392 } | |
| 393 style.foreground = printerColor; | |
| 394 } else { | |
| 395 style.foreground = null; | |
| 396 } | |
| 397 } | |
| 398 color = style.background; | |
| 399 if (color !is null) { | |
| 400 if (printOptions.printTextBackground) { | |
| 401 Color printerColor; | |
| 402 if ( auto p = color in resources ) { | |
| 403 printerColor = cast(Color)*p; | |
| 404 } | |
| 405 else { | |
| 406 printerColor = new Color (printer, color.getRGB()); | |
| 407 resources[color]=printerColor; | |
| 408 } | |
| 409 style.background = printerColor; | |
| 410 } else { | |
| 411 style.background = null; | |
| 412 } | |
| 413 } | |
| 414 if (!printOptions.printTextFontStyle) { | |
| 415 style.fontStyle = DWT.NORMAL; | |
| 416 } | |
| 417 style.rise = style.rise * printerDPI.y / screenDPI.y; | |
| 418 GlyphMetrics metrics = style.metrics; | |
| 419 if (metrics !is null) { | |
| 420 metrics.ascent = metrics.ascent * printerDPI.y / screenDPI.y; | |
| 421 metrics.descent = metrics.descent * printerDPI.y / screenDPI.y; | |
| 422 metrics.width = metrics.width * printerDPI.x / screenDPI.x; | |
| 423 } | |
| 424 } | |
| 425 lineSpacing = styledText.lineSpacing * printerDPI.y / screenDPI.y; | |
| 426 if (printOptions.printLineNumbers) { | |
| 427 printMargin = 3 * printerDPI.x / screenDPI.x; | |
| 428 } | |
| 429 } | |
| 430 /** | |
| 431 * Copies the text of the specified <code>StyledTextContent</code>. | |
| 432 * </p> | |
| 433 * @param original the <code>StyledTextContent</code> to copy. | |
| 434 */ | |
| 435 StyledTextContent copyContent(StyledTextContent original) { | |
| 436 StyledTextContent printerContent = new DefaultContent(); | |
| 437 int insertOffset = 0; | |
| 438 for (int i = 0; i < original.getLineCount(); i++) { | |
| 439 int insertEndOffset; | |
| 440 if (i < original.getLineCount() - 1) { | |
| 441 insertEndOffset = original.getOffsetAtLine(i + 1); | |
| 442 } else { | |
| 443 insertEndOffset = original.getCharCount(); | |
| 444 } | |
| 445 printerContent.replaceTextRange(insertOffset, 0, original.getTextRange(insertOffset, insertEndOffset - insertOffset)); | |
| 446 insertOffset = insertEndOffset; | |
| 447 } | |
| 448 return printerContent; | |
| 449 } | |
| 450 /** | |
| 451 * Disposes of the resources and the <code>PrintRenderer</code>. | |
| 452 */ | |
| 453 void dispose() { | |
| 454 if (gc !is null) { | |
| 455 gc.dispose(); | |
| 456 gc = null; | |
| 457 } | |
| 458 foreach( resource; resources.values ){ | |
| 459 resource.dispose(); | |
| 460 } | |
| 461 resources = null; | |
| 462 if (printerFont !is null) { | |
| 463 printerFont.dispose(); | |
| 464 printerFont = null; | |
| 465 } | |
| 466 if (printerRenderer !is null) { | |
| 467 printerRenderer.dispose(); | |
| 468 printerRenderer = null; | |
| 469 } | |
| 470 } | |
|
197
184ab53b7785
Changes and fixes for jface
Frank Benoit <benoit@tionex.de>
parents:
178
diff
changeset
|
471 void init_() { |
| 155 | 472 Rectangle trim = printer.computeTrim(0, 0, 0, 0); |
| 473 Point dpi = printer.getDPI(); | |
| 474 | |
| 475 printerFont = new Font( cast(Device)printer, fontData.getName(), fontData.getHeight(), DWT.NORMAL); | |
| 476 clientArea = printer.getClientArea(); | |
| 477 pageWidth = clientArea.width; | |
| 478 // one inch margin around text | |
| 479 clientArea.x = dpi.x + trim.x; | |
| 480 clientArea.y = dpi.y + trim.y; | |
| 481 clientArea.width -= (clientArea.x + trim.width); | |
| 482 clientArea.height -= (clientArea.y + trim.height); | |
| 483 | |
| 484 int style = mirrored ? DWT.RIGHT_TO_LEFT : DWT.LEFT_TO_RIGHT; | |
| 485 gc = new GC(printer, style); | |
| 486 gc.setFont(printerFont); | |
| 487 printerRenderer.setFont(printerFont, tabLength); | |
| 488 int lineHeight = printerRenderer.getLineHeight(); | |
| 489 if (printOptions.header !is null) { | |
| 490 clientArea.y += lineHeight * 2; | |
| 491 clientArea.height -= lineHeight * 2; | |
| 492 } | |
| 493 if (printOptions.footer !is null) { | |
| 494 clientArea.height -= lineHeight * 2; | |
| 495 } | |
| 496 | |
| 497 // TODO not wrapped | |
| 498 StyledTextContent content = printerRenderer.content; | |
| 499 startLine = 0; | |
| 500 endLine = singleLine ? 0 : content.getLineCount() - 1; | |
| 501 PrinterData data = printer.getPrinterData(); | |
| 502 if (data.scope_ is PrinterData.PAGE_RANGE) { | |
| 503 int pageSize = clientArea.height / lineHeight;//WRONG | |
| 504 startLine = (startPage - 1) * pageSize; | |
| 505 } else if (data.scope_ is PrinterData.SELECTION) { | |
| 506 startLine = content.getLineAtOffset(selection.x); | |
| 507 if (selection.y > 0) { | |
| 508 endLine = content.getLineAtOffset(selection.x + selection.y - 1); | |
| 509 } else { | |
| 510 endLine = startLine - 1; | |
| 511 } | |
| 512 } | |
| 513 } | |
| 514 /** | |
| 515 * Prints the lines in the specified page range. | |
| 516 */ | |
| 517 void print() { | |
| 518 Color background = gc.getBackground(); | |
| 519 Color foreground = gc.getForeground(); | |
| 520 int paintY = clientArea.y; | |
| 521 int paintX = clientArea.x; | |
| 522 int width = clientArea.width; | |
| 523 int page = startPage; | |
| 524 int pageBottom = clientArea.y + clientArea.height; | |
| 525 int orientation = gc.getStyle() & (DWT.RIGHT_TO_LEFT | DWT.LEFT_TO_RIGHT); | |
| 526 TextLayout printLayout = null; | |
| 527 if (printOptions.printLineNumbers || printOptions.header !is null || printOptions.footer !is null) { | |
| 528 printLayout = new TextLayout(printer); | |
| 529 printLayout.setFont(printerFont); | |
| 530 } | |
| 531 if (printOptions.printLineNumbers) { | |
| 213 | 532 int numberingWidth = 0; |
| 155 | 533 int count = endLine - startLine + 1; |
| 213 | 534 String[] lineLabels = printOptions.lineLabels; |
| 535 if (lineLabels !is null) { | |
| 536 for (int i = startLine; i < Math.min(count, lineLabels.length); i++) { | |
| 537 if (lineLabels[i] !is null) { | |
| 538 printLayout.setText(lineLabels[i]); | |
| 539 int lineWidth = printLayout.getBounds().width; | |
| 540 numberingWidth = Math.max(numberingWidth, lineWidth); | |
| 541 } | |
| 542 } | |
| 543 } else { | |
| 544 StringBuffer buffer = new StringBuffer("0"); | |
| 545 while ((count /= 10) > 0) buffer.append("0"); | |
| 546 printLayout.setText(buffer.toString()); | |
| 547 numberingWidth = printLayout.getBounds().width; | |
| 548 } | |
| 549 numberingWidth += printMargin; | |
| 155 | 550 if (numberingWidth > width) numberingWidth = width; |
| 551 paintX += numberingWidth; | |
| 552 width -= numberingWidth; | |
| 553 } | |
| 554 for (int i = startLine; i <= endLine && page <= endPage; i++) { | |
| 555 if (paintY is clientArea.y) { | |
| 556 printer.startPage(); | |
| 557 printDecoration(page, true, printLayout); | |
| 558 } | |
| 559 TextLayout layout = printerRenderer.getTextLayout(i, orientation, width, lineSpacing); | |
| 560 Color lineBackground = printerRenderer.getLineBackground(i, background); | |
| 561 int paragraphBottom = paintY + layout.getBounds().height; | |
| 562 if (paragraphBottom <= pageBottom) { | |
| 563 //normal case, the whole paragraph fits in the current page | |
| 564 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); | |
| 565 paintY = paragraphBottom; | |
| 566 } else { | |
| 567 int lineCount = layout.getLineCount(); | |
| 568 while (paragraphBottom > pageBottom && lineCount > 0) { | |
| 569 lineCount--; | |
| 570 paragraphBottom -= layout.getLineBounds(lineCount).height + layout.getSpacing(); | |
| 571 } | |
| 572 if (lineCount is 0) { | |
| 573 //the whole paragraph goes to the next page | |
| 574 printDecoration(page, false, printLayout); | |
| 575 printer.endPage(); | |
| 576 page++; | |
| 577 if (page <= endPage) { | |
| 578 printer.startPage(); | |
| 579 printDecoration(page, true, printLayout); | |
| 580 paintY = clientArea.y; | |
| 581 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); | |
| 582 paintY += layout.getBounds().height; | |
| 583 } | |
| 584 } else { | |
| 585 //draw paragraph top in the current page and paragraph bottom in the next | |
| 586 int height = paragraphBottom - paintY; | |
| 213 | 587 gc.setClipping(clientArea.x, paintY, clientArea.width, height); |
| 155 | 588 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); |
| 213 | 589 gc.setClipping(cast(Rectangle)null); |
| 155 | 590 printDecoration(page, false, printLayout); |
| 591 printer.endPage(); | |
| 592 page++; | |
| 593 if (page <= endPage) { | |
| 594 printer.startPage(); | |
| 595 printDecoration(page, true, printLayout); | |
| 596 paintY = clientArea.y - height; | |
| 597 int layoutHeight = layout.getBounds().height; | |
| 213 | 598 gc.setClipping(clientArea.x, clientArea.y, clientArea.width, layoutHeight - height); |
| 155 | 599 printLine(paintX, paintY, gc, foreground, lineBackground, layout, printLayout, i); |
| 213 | 600 gc.setClipping(cast(Rectangle)null); |
| 155 | 601 paintY += layoutHeight; |
| 602 } | |
| 603 } | |
| 604 } | |
| 605 printerRenderer.disposeTextLayout(layout); | |
| 606 } | |
| 213 | 607 if (page <= endPage && paintY > clientArea.y) { |
| 155 | 608 // close partial page |
| 609 printDecoration(page, false, printLayout); | |
| 610 printer.endPage(); | |
| 611 } | |
| 612 if (printLayout !is null) printLayout.dispose(); | |
| 613 } | |
| 614 /** | |
| 615 * Print header or footer decorations. | |
| 616 * | |
| 617 * @param page page number to print, if specified in the StyledTextPrintOptions header or footer. | |
| 618 * @param header true = print the header, false = print the footer | |
| 619 */ | |
| 620 void printDecoration(int page, bool header, TextLayout layout) { | |
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621 String text = header ? printOptions.header : printOptions.footer; |
| 155 | 622 if (text is null) return; |
| 623 int lastSegmentIndex = 0; | |
| 624 for (int i = 0; i < 3; i++) { | |
| 625 int segmentIndex = tango.text.Util.locatePattern( text, StyledTextPrintOptions.SEPARATOR, lastSegmentIndex); | |
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626 String segment; |
| 155 | 627 if (segmentIndex is text.length ) { |
| 628 segment = text[ lastSegmentIndex .. $ ].dup; | |
| 629 printDecorationSegment(segment, i, page, header, layout); | |
| 630 break; | |
| 631 } else { | |
| 632 segment = text[ lastSegmentIndex .. segmentIndex ].dup; | |
| 633 printDecorationSegment(segment, i, page, header, layout); | |
| 634 lastSegmentIndex = segmentIndex + StyledTextPrintOptions.SEPARATOR.length; | |
| 635 } | |
| 636 } | |
| 637 } | |
| 638 /** | |
| 639 * Print one segment of a header or footer decoration. | |
| 640 * Headers and footers have three different segments. | |
| 641 * One each for left aligned, centered, and right aligned text. | |
| 642 * | |
| 643 * @param segment decoration segment to print | |
| 644 * @param alignment alignment of the segment. 0=left, 1=center, 2=right | |
| 645 * @param page page number to print, if specified in the decoration segment. | |
| 646 * @param header true = print the header, false = print the footer | |
| 647 */ | |
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648 void printDecorationSegment(String segment, int alignment, int page, bool header, TextLayout layout) { |
| 155 | 649 int pageIndex = tango.text.Util.locatePattern( segment, StyledTextPrintOptions.PAGE_TAG ); |
| 650 if (pageIndex !is segment.length ) { | |
| 651 int pageTagLength = StyledTextPrintOptions.PAGE_TAG.length; | |
| 652 StringBuffer buffer = new StringBuffer(segment[ 0 .. pageIndex ]); | |
| 653 buffer.append (page); | |
| 654 buffer.append (segment[ pageIndex + pageTagLength .. $ ]); | |
| 655 segment = buffer.toString().dup; | |
| 656 } | |
| 657 if (segment.length > 0) { | |
| 658 layout.setText(segment); | |
| 659 int segmentWidth = layout.getBounds().width; | |
| 660 int segmentHeight = printerRenderer.getLineHeight(); | |
| 661 int drawX = 0, drawY; | |
| 662 if (alignment is LEFT) { | |
| 663 drawX = clientArea.x; | |
| 664 } else if (alignment is CENTER) { | |
| 665 drawX = (pageWidth - segmentWidth) / 2; | |
| 666 } else if (alignment is RIGHT) { | |
| 667 drawX = clientArea.x + clientArea.width - segmentWidth; | |
| 668 } | |
| 669 if (header) { | |
| 670 drawY = clientArea.y - segmentHeight * 2; | |
| 671 } else { | |
| 672 drawY = clientArea.y + clientArea.height + segmentHeight; | |
| 673 } | |
| 674 layout.draw(gc, drawX, drawY); | |
| 675 } | |
| 676 } | |
| 677 void printLine(int x, int y, GC gc, Color foreground, Color background, TextLayout layout, TextLayout printLayout, int index) { | |
| 678 if (background !is null) { | |
| 679 Rectangle rect = layout.getBounds(); | |
| 680 gc.setBackground(background); | |
| 681 gc.fillRectangle(x, y, rect.width, rect.height); | |
| 682 | |
| 683 // int lineCount = layout.getLineCount(); | |
| 684 // for (int i = 0; i < lineCount; i++) { | |
| 685 // Rectangle rect = layout.getLineBounds(i); | |
| 686 // rect.x += paintX; | |
| 687 // rect.y += paintY + layout.getSpacing(); | |
| 688 // rect.width = width;//layout bounds | |
| 689 // gc.fillRectangle(rect); | |
| 690 // } | |
| 691 } | |
| 692 if (printOptions.printLineNumbers) { | |
| 693 FontMetrics metrics = layout.getLineMetrics(0); | |
| 213 | 694 printLayout.setAscent(metrics.getAscent() + metrics.getLeading()); |
| 155 | 695 printLayout.setDescent(metrics.getDescent()); |
| 213 | 696 String[] lineLabels = printOptions.lineLabels; |
| 697 if (lineLabels !is null) { | |
| 698 if (0 <= index && index < lineLabels.length && lineLabels[index] !is null) { | |
| 699 printLayout.setText(lineLabels[index]); | |
| 700 } else { | |
| 701 printLayout.setText(""); | |
| 702 } | |
| 703 } else { | |
| 704 printLayout.setText( to!(String)(index) ); | |
| 705 } | |
| 155 | 706 int paintX = x - printMargin - printLayout.getBounds().width; |
| 707 printLayout.draw(gc, paintX, y); | |
| 708 printLayout.setAscent(-1); | |
| 709 printLayout.setDescent(-1); | |
| 710 } | |
| 711 gc.setForeground(foreground); | |
| 712 layout.draw(gc, x, y); | |
| 713 } | |
| 714 /** | |
| 715 * Starts a print job and prints the pages specified in the constructor. | |
| 716 */ | |
| 717 public void run() { | |
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718 String jobName = printOptions.jobName; |
| 155 | 719 if (jobName is null) { |
| 720 jobName = "Printing"; | |
| 721 } | |
| 722 if (printer.startJob(jobName)) { | |
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723 init_(); |
| 155 | 724 print(); |
| 725 dispose(); | |
| 726 printer.endJob(); | |
| 727 } | |
| 728 } | |
| 729 } | |
| 730 /** | |
| 731 * The <code>RTFWriter</code> class is used to write widget content as | |
| 732 * rich text. The implementation complies with the RTF specification | |
| 733 * version 1.5. | |
| 734 * <p> | |
| 735 * toString() is guaranteed to return a valid RTF string only after | |
| 736 * close() has been called. | |
| 737 * </p><p> | |
| 738 * Whole and partial lines and line breaks can be written. Lines will be | |
| 739 * formatted using the styles queried from the LineStyleListener, if | |
| 740 * set, or those set directly in the widget. All styles are applied to | |
| 741 * the RTF stream like they are rendered by the widget. In addition, the | |
| 742 * widget font name and size is used for the whole text. | |
| 743 * </p> | |
| 744 */ | |
| 745 class RTFWriter : TextWriter { | |
| 746 | |
| 747 alias TextWriter.write write; | |
| 748 | |
| 749 static const int DEFAULT_FOREGROUND = 0; | |
| 750 static const int DEFAULT_BACKGROUND = 1; | |
| 751 Color[] colorTable; | |
| 752 Font[] fontTable; | |
| 753 bool WriteUnicode; | |
| 754 | |
| 755 /** | |
| 756 * Creates a RTF writer that writes content starting at offset "start" | |
| 757 * in the document. <code>start</code> and <code>length</code>can be set to specify partial | |
| 758 * lines. | |
| 759 * | |
| 760 * @param start start offset of content to write, 0 based from | |
| 761 * beginning of document | |
| 762 * @param length length of content to write | |
| 763 */ | |
| 764 public this(int start, int length) { | |
| 765 super(start, length); | |
| 766 colorTable ~= getForeground(); | |
| 767 colorTable ~= getBackground(); | |
| 768 fontTable ~= getFont(); | |
| 769 setUnicode(); | |
| 770 } | |
| 771 /** | |
| 772 * Closes the RTF writer. Once closed no more content can be written. | |
| 773 * <b>NOTE:</b> <code>toString()</code> does not return a valid RTF string until | |
| 774 * <code>close()</code> has been called. | |
| 775 */ | |
| 776 public override void close() { | |
| 777 if (!isClosed()) { | |
| 778 writeHeader(); | |
| 779 write("\n}}\0"); | |
| 780 super.close(); | |
| 781 } | |
| 782 } | |
| 783 /** | |
| 784 * Returns the index of the specified color in the RTF color table. | |
| 785 * | |
| 786 * @param color the color | |
| 787 * @param defaultIndex return value if color is null | |
| 788 * @return the index of the specified color in the RTF color table | |
| 789 * or "defaultIndex" if "color" is null. | |
| 790 */ | |
| 791 int getColorIndex(Color color, int defaultIndex) { | |
| 792 if (color is null) return defaultIndex; | |
| 793 int index = -1; | |
| 794 foreach( i, col; colorTable ){ | |
| 795 if( col == color ){ | |
| 796 index = i; | |
| 797 break; | |
| 798 } | |
| 799 } | |
| 800 if (index is -1) { | |
| 801 index = colorTable.length; | |
| 802 colorTable ~= color; | |
| 803 } | |
| 804 return index; | |
| 805 } | |
| 806 /** | |
| 807 * Returns the index of the specified color in the RTF color table. | |
| 808 * | |
| 809 * @param color the color | |
| 810 * @param defaultIndex return value if color is null | |
| 811 * @return the index of the specified color in the RTF color table | |
| 812 * or "defaultIndex" if "color" is null. | |
| 813 */ | |
| 814 int getFontIndex(Font font) { | |
| 815 int index = -1; | |
| 816 foreach( i, f; colorTable ){ | |
| 817 if( f == font ){ | |
| 818 index = i; | |
| 819 break; | |
| 820 } | |
| 821 } | |
| 822 if (index is -1) { | |
| 823 index = fontTable.length; | |
| 824 fontTable ~= font; | |
| 825 } | |
| 826 return index; | |
| 827 } | |
| 828 /** | |
| 829 * Determines if Unicode RTF should be written. | |
| 830 * Don't write Unicode RTF on Windows 95/98/ME or NT. | |
| 831 */ | |
| 832 void setUnicode() { | |
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833 // const String Win95 = "windows 95"; |
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834 // const String Win98 = "windows 98"; |
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835 // const String WinME = "windows me"; |
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836 // const String WinNT = "windows nt"; |
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837 // String osName = System.getProperty("os.name").toLowerCase(); |
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838 // String osVersion = System.getProperty("os.version"); |
| 155 | 839 // int majorVersion = 0; |
| 840 // | |
| 841 // if (osName.startsWith(WinNT) && osVersion !is null) { | |
| 842 // int majorIndex = osVersion.indexOf('.'); | |
| 843 // if (majorIndex !is -1) { | |
| 844 // osVersion = osVersion.substring(0, majorIndex); | |
| 845 // try { | |
| 846 // majorVersion = Integer.parseInt(osVersion); | |
| 847 // } catch (NumberFormatException exception) { | |
| 848 // // ignore exception. version number remains unknown. | |
| 849 // // will write without Unicode | |
| 850 // } | |
| 851 // } | |
| 852 // } | |
| 853 // WriteUnicode = !osName.startsWith(Win95) && | |
| 854 // !osName.startsWith(Win98) && | |
| 855 // !osName.startsWith(WinME) && | |
| 856 // (!osName.startsWith(WinNT) || majorVersion > 4); | |
| 857 WriteUnicode = true; // we are on linux-gtk | |
| 858 } | |
| 859 /** | |
| 860 * Appends the specified segment of "string" to the RTF data. | |
| 861 * Copy from <code>start</code> up to, but excluding, <code>end</code>. | |
| 862 * | |
| 863 * @param string string to copy a segment from. Must not contain | |
| 864 * line breaks. Line breaks should be written using writeLineDelimiter() | |
| 865 * @param start start offset of segment. 0 based. | |
| 866 * @param end end offset of segment | |
| 867 */ | |
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868 void write(String string, int start, int end) { |
| 155 | 869 wchar[] wstring = tango.text.convert.Utf.toString16( string[ start .. end ] ); |
| 870 start = 0; | |
| 871 end = wstring.length; | |
| 872 for (int index = start; index < end; index++) { | |
| 873 wchar ch = wstring[index]; | |
| 874 if (ch > 0xFF && WriteUnicode) { | |
| 875 // write the sub string from the last escaped character | |
| 876 // to the current one. Fixes bug 21698. | |
| 877 if (index > start) { | |
| 878 write(tango.text.convert.Utf.toString(wstring[start .. index ])); | |
| 879 } | |
| 880 write("\\u"); | |
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881 write( to!(String)( cast(short)ch )); |
| 155 | 882 write(' '); // control word delimiter |
| 883 start = index + 1; | |
| 884 } else if (ch is '}' || ch is '{' || ch is '\\') { | |
| 885 // write the sub string from the last escaped character | |
| 886 // to the current one. Fixes bug 21698. | |
| 887 if (index > start) { | |
| 888 write(tango.text.convert.Utf.toString(wstring[start .. index])); | |
| 889 } | |
| 890 write('\\'); | |
| 891 write(cast(char)ch); // ok because one of {}\ | |
| 892 start = index + 1; | |
| 893 } | |
| 894 } | |
| 895 // write from the last escaped character to the end. | |
| 896 // Fixes bug 21698. | |
| 897 if (start < end) { | |
| 898 write(tango.text.convert.Utf.toString(wstring[ start .. end])); | |
| 899 } | |
| 900 } | |
| 901 /** | |
| 902 * Writes the RTF header including font table and color table. | |
| 903 */ | |
| 904 void writeHeader() { | |
| 905 StringBuffer header = new StringBuffer(); | |
| 906 FontData fontData = getFont().getFontData()[0]; | |
| 907 header.append("{\\rtf1\\ansi"); | |
| 908 // specify code page, necessary for copy to work in bidi | |
| 909 // systems that don't support Unicode RTF. | |
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910 // PORTING_TODO: String cpg = System.getProperty("file.encoding").toLowerCase(); |
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911 String cpg = "UTF16"; |
| 155 | 912 /+ |
| 913 if (cpg.startsWith("cp") || cpg.startsWith("ms")) { | |
| 914 cpg = cpg.substring(2, cpg.length()); | |
| 915 header.append("\\ansicpg"); | |
| 916 header.append(cpg); | |
| 917 } | |
| 918 +/ | |
| 919 header.append("\\uc0\\deff0{\\fonttbl{\\f0\\fnil "); | |
| 920 header.append(fontData.getName()); | |
| 921 header.append(";"); | |
| 922 for (int i = 1; i < fontTable.length; i++) { | |
| 923 header.append("\\f"); | |
| 924 header.append(i); | |
| 925 header.append(" "); | |
| 926 FontData fd = (cast(Font)fontTable[i]).getFontData()[0]; | |
| 927 header.append(fd.getName()); | |
| 928 header.append(";"); | |
| 929 } | |
| 930 header.append("}}\n{\\colortbl"); | |
| 931 for (int i = 0; i < colorTable.length; i++) { | |
| 932 Color color = cast(Color) colorTable[i]; | |
| 933 header.append("\\red"); | |
| 934 header.append(color.getRed()); | |
| 935 header.append("\\green"); | |
| 936 header.append(color.getGreen()); | |
| 937 header.append("\\blue"); | |
| 938 header.append(color.getBlue()); | |
| 939 header.append(";"); | |
| 940 } | |
| 941 // some RTF readers ignore the deff0 font tag. Explicitly | |
| 942 // set the font for the whole document to work around this. | |
| 943 header.append("}\n{\\f0\\fs"); | |
| 944 // font size is specified in half points | |
| 945 header.append(fontData.getHeight() * 2); | |
| 946 header.append(" "); | |
| 947 write(header.toString(), 0); | |
| 948 } | |
| 949 /** | |
| 950 * Appends the specified line text to the RTF data. Lines will be formatted | |
| 951 * using the styles queried from the LineStyleListener, if set, or those set | |
| 952 * directly in the widget. | |
| 953 * | |
| 954 * @param line line text to write as RTF. Must not contain line breaks | |
| 955 * Line breaks should be written using writeLineDelimiter() | |
| 956 * @param lineOffset offset of the line. 0 based from the start of the | |
| 957 * widget document. Any text occurring before the start offset or after the | |
| 958 * end offset specified during object creation is ignored. | |
| 959 * @exception DWTException <ul> | |
| 960 * <li>ERROR_IO when the writer is closed.</li> | |
| 961 * </ul> | |
| 962 */ | |
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963 public override void writeLine(String line, int lineOffset) { |
| 155 | 964 if (isClosed()) { |
| 965 DWT.error(DWT.ERROR_IO); | |
| 966 } | |
| 967 int lineIndex = content.getLineAtOffset(lineOffset); | |
| 968 int lineAlignment, lineIndent; | |
| 969 bool lineJustify; | |
| 970 int[] ranges; | |
| 971 StyleRange[] styles; | |
| 972 StyledTextEvent event = getLineStyleData(lineOffset, line); | |
| 973 if (event !is null) { | |
| 974 lineAlignment = event.alignment; | |
| 975 lineIndent = event.indent; | |
| 976 lineJustify = event.justify; | |
| 977 ranges = event.ranges; | |
| 978 styles = event.styles; | |
| 979 } else { | |
| 980 lineAlignment = renderer.getLineAlignment(lineIndex, alignment); | |
| 981 lineIndent = renderer.getLineIndent(lineIndex, indent); | |
| 982 lineJustify = renderer.getLineJustify(lineIndex, justify); | |
| 983 ranges = renderer.getRanges(lineOffset, line.length); | |
| 984 styles = renderer.getStyleRanges(lineOffset, line.length, false); | |
| 985 } | |
| 986 if (styles is null) styles = new StyleRange[0]; | |
| 987 Color lineBackground = renderer.getLineBackground(lineIndex, null); | |
| 988 event = getLineBackgroundData(lineOffset, line); | |
| 989 if (event !is null && event.lineBackground !is null) lineBackground = event.lineBackground; | |
| 990 writeStyledLine(line, lineOffset, ranges, styles, lineBackground, lineIndent, lineAlignment, lineJustify); | |
| 991 } | |
| 992 /** | |
| 993 * Appends the specified line delimiter to the RTF data. | |
| 994 * | |
| 995 * @param lineDelimiter line delimiter to write as RTF. | |
| 996 * @exception DWTException <ul> | |
| 997 * <li>ERROR_IO when the writer is closed.</li> | |
| 998 * </ul> | |
| 999 */ | |
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1000 public override void writeLineDelimiter(String lineDelimiter) { |
| 155 | 1001 if (isClosed()) { |
| 1002 DWT.error(DWT.ERROR_IO); | |
| 1003 } | |
| 1004 write(lineDelimiter, 0, lineDelimiter.length); | |
| 1005 write("\\par "); | |
| 1006 } | |
| 1007 /** | |
| 1008 * Appends the specified line text to the RTF data. | |
| 1009 * <p> | |
| 1010 * Use the colors and font styles specified in "styles" and "lineBackground". | |
| 1011 * Formatting is written to reflect the text rendering by the text widget. | |
| 1012 * Style background colors take precedence over the line background color. | |
| 1013 * Background colors are written using the \highlight tag (vs. the \cb tag). | |
| 1014 * </p> | |
| 1015 * | |
| 1016 * @param line line text to write as RTF. Must not contain line breaks | |
| 1017 * Line breaks should be written using writeLineDelimiter() | |
| 1018 * @param lineOffset offset of the line. 0 based from the start of the | |
| 1019 * widget document. Any text occurring before the start offset or after the | |
| 1020 * end offset specified during object creation is ignored. | |
| 1021 * @param styles styles to use for formatting. Must not be null. | |
| 1022 * @param lineBackground line background color to use for formatting. | |
| 1023 * May be null. | |
| 1024 */ | |
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1025 void writeStyledLine(String line, int lineOffset, int ranges[], StyleRange[] styles, Color lineBackground, int indent, int alignment, bool justify) { |
| 155 | 1026 int lineLength = line.length; |
| 1027 int startOffset = getStart(); | |
| 1028 int writeOffset = startOffset - lineOffset; | |
| 1029 if (writeOffset >= lineLength) return; | |
| 1030 int lineIndex = Math.max(0, writeOffset); | |
| 1031 | |
| 1032 write("\\fi"); | |
| 1033 write(indent); | |
| 1034 switch (alignment) { | |
| 1035 case DWT.LEFT: write("\\ql"); break; | |
| 1036 case DWT.CENTER: write("\\qc"); break; | |
| 1037 case DWT.RIGHT: write("\\qr"); break; | |
| 1038 default: | |
| 1039 } | |
| 1040 if (justify) write("\\qj"); | |
| 1041 write(" "); | |
| 1042 | |
| 1043 if (lineBackground !is null) { | |
| 1044 write("{\\highlight"); | |
| 1045 write(getColorIndex(lineBackground, DEFAULT_BACKGROUND)); | |
| 1046 write(" "); | |
| 1047 } | |
| 1048 int endOffset = startOffset + super.getCharCount(); | |
| 1049 int lineEndOffset = Math.min(lineLength, endOffset - lineOffset); | |
| 1050 for (int i = 0; i < styles.length; i++) { | |
| 1051 StyleRange style = styles[i]; | |
| 1052 int start, end; | |
| 1053 if (ranges !is null) { | |
| 1054 start = ranges[i << 1] - lineOffset; | |
| 1055 end = start + ranges[(i << 1) + 1]; | |
| 1056 } else { | |
| 1057 start = style.start - lineOffset; | |
| 1058 end = start + style.length; | |
| 1059 } | |
| 1060 // skip over partial first line | |
| 1061 if (end < writeOffset) { | |
| 1062 continue; | |
| 1063 } | |
| 1064 // style starts beyond line end or RTF write end | |
| 1065 if (start >= lineEndOffset) { | |
| 1066 break; | |
| 1067 } | |
| 1068 // write any unstyled text | |
| 1069 if (lineIndex < start) { | |
| 1070 // copy to start of style | |
| 1071 // style starting beyond end of write range or end of line | |
| 1072 // is guarded against above. | |
| 1073 write(line, lineIndex, start); | |
| 1074 lineIndex = start; | |
| 1075 } | |
| 1076 // write styled text | |
| 1077 write("{\\cf"); | |
| 1078 write(getColorIndex(style.foreground, DEFAULT_FOREGROUND)); | |
| 1079 int colorIndex = getColorIndex(style.background, DEFAULT_BACKGROUND); | |
| 1080 if (colorIndex !is DEFAULT_BACKGROUND) { | |
| 1081 write("\\highlight"); | |
| 1082 write(colorIndex); | |
| 1083 } | |
| 1084 Font font = style.font; | |
| 1085 if (font !is null) { | |
| 1086 int fontIndex = getFontIndex(font); | |
| 1087 write("\\f"); | |
| 1088 write(fontIndex); | |
| 1089 FontData fontData = font.getFontData()[0]; | |
| 1090 write("\\fs"); | |
| 1091 write(fontData.getHeight() * 2); | |
| 1092 } else { | |
| 1093 if ((style.fontStyle & DWT.BOLD) !is 0) { | |
| 1094 write("\\b"); | |
| 1095 } | |
| 1096 if ((style.fontStyle & DWT.ITALIC) !is 0) { | |
| 1097 write("\\i"); | |
| 1098 } | |
| 1099 } | |
| 1100 if (style.underline) { | |
| 1101 write("\\ul"); | |
| 1102 } | |
| 1103 if (style.strikeout) { | |
| 1104 write("\\strike"); | |
| 1105 } | |
| 1106 write(" "); | |
| 1107 // copy to end of style or end of write range or end of line | |
| 1108 int copyEnd = Math.min(end, lineEndOffset); | |
| 1109 // guard against invalid styles and let style processing continue | |
| 1110 copyEnd = Math.max(copyEnd, lineIndex); | |
| 1111 write(line, lineIndex, copyEnd); | |
| 1112 if (font is null) { | |
| 1113 if ((style.fontStyle & DWT.BOLD) !is 0) { | |
| 1114 write("\\b0"); | |
| 1115 } | |
| 1116 if ((style.fontStyle & DWT.ITALIC) !is 0) { | |
| 1117 write("\\i0"); | |
| 1118 } | |
| 1119 } | |
| 1120 if (style.underline) { | |
| 1121 write("\\ul0"); | |
| 1122 } | |
| 1123 if (style.strikeout) { | |
| 1124 write("\\strike0"); | |
| 1125 } | |
| 1126 write("}"); | |
| 1127 lineIndex = copyEnd; | |
| 1128 } | |
| 1129 // write unstyled text at the end of the line | |
| 1130 if (lineIndex < lineEndOffset) { | |
| 1131 write(line, lineIndex, lineEndOffset); | |
| 1132 } | |
| 1133 if (lineBackground !is null) write("}"); | |
| 1134 } | |
| 1135 } | |
| 1136 /** | |
| 1137 * The <code>TextWriter</code> class is used to write widget content to | |
| 1138 * a string. Whole and partial lines and line breaks can be written. To write | |
| 1139 * partial lines, specify the start and length of the desired segment | |
| 1140 * during object creation. | |
| 1141 * <p> | |
| 1142 * </b>NOTE:</b> <code>toString()</code> is guaranteed to return a valid string only after close() | |
| 1143 * has been called. | |
| 1144 * </p> | |
| 1145 */ | |
| 1146 class TextWriter { | |
| 1147 private StringBuffer buffer; | |
| 1148 private int startOffset; // offset of first character that will be written | |
| 1149 private int endOffset; // offset of last character that will be written. | |
| 1150 // 0 based from the beginning of the widget text. | |
| 1151 private bool isClosed_ = false; | |
| 1152 | |
| 1153 /** | |
| 1154 * Creates a writer that writes content starting at offset "start" | |
| 1155 * in the document. <code>start</code> and <code>length</code> can be set to specify partial lines. | |
| 1156 * | |
| 1157 * @param start start offset of content to write, 0 based from beginning of document | |
| 1158 * @param length length of content to write | |
| 1159 */ | |
| 1160 public this(int start, int length) { | |
| 1161 buffer = new StringBuffer(length); | |
| 1162 startOffset = start; | |
| 1163 endOffset = start + length; | |
| 1164 } | |
| 1165 /** | |
| 1166 * Closes the writer. Once closed no more content can be written. | |
| 1167 * <b>NOTE:</b> <code>toString()</code> is not guaranteed to return a valid string unless | |
| 1168 * the writer is closed. | |
| 1169 */ | |
| 1170 public void close() { | |
| 1171 if (!isClosed_) { | |
| 1172 isClosed_ = true; | |
| 1173 } | |
| 1174 } | |
| 1175 /** | |
| 1176 * Returns the number of characters to write. | |
| 1177 * @return the integer number of characters to write | |
| 1178 */ | |
| 1179 public int getCharCount() { | |
| 1180 return endOffset - startOffset; | |
| 1181 } | |
| 1182 /** | |
| 1183 * Returns the offset where writing starts. 0 based from the start of | |
| 1184 * the widget text. Used to write partial lines. | |
| 1185 * @return the integer offset where writing starts | |
| 1186 */ | |
| 1187 public int getStart() { | |
| 1188 return startOffset; | |
| 1189 } | |
| 1190 /** | |
| 1191 * Returns whether the writer is closed. | |
| 1192 * @return a bool specifying whether or not the writer is closed | |
| 1193 */ | |
| 1194 public bool isClosed() { | |
| 1195 return isClosed_; | |
| 1196 } | |
| 1197 /** | |
| 1198 * Returns the string. <code>close()</code> must be called before <code>toString()</code> | |
| 1199 * is guaranteed to return a valid string. | |
| 1200 * | |
| 1201 * @return the string | |
| 1202 */ | |
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1203 public override String toString() { |
| 155 | 1204 return buffer.toString(); |
| 1205 } | |
| 1206 /** | |
| 1207 * Appends the given string to the data. | |
| 1208 */ | |
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1209 void write(String string) { |
| 155 | 1210 buffer.append(string); |
| 1211 } | |
| 1212 /** | |
| 1213 * Inserts the given string to the data at the specified offset. | |
| 1214 * <p> | |
| 1215 * Do nothing if "offset" is < 0 or > getCharCount() | |
| 1216 * </p> | |
| 1217 * | |
| 1218 * @param string text to insert | |
| 1219 * @param offset offset in the existing data to insert "string" at. | |
| 1220 */ | |
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1221 void write(String string, int offset) { |
| 155 | 1222 if (offset < 0 || offset > buffer.length()) { |
| 1223 return; | |
| 1224 } | |
| 1225 buffer.select( offset ); | |
| 1226 buffer.prepend( string ); | |
| 1227 } | |
| 1228 /** | |
| 1229 * Appends the given int to the data. | |
| 1230 */ | |
| 1231 void write(int i) { | |
| 1232 buffer.append(i); | |
| 1233 } | |
| 1234 /** | |
| 1235 * Appends the given character to the data. | |
| 1236 */ | |
| 1237 void write(char i) { | |
| 1238 buffer.append(i); | |
| 1239 } | |
| 1240 /** | |
| 1241 * Appends the specified line text to the data. | |
| 1242 * | |
| 1243 * @param line line text to write. Must not contain line breaks | |
| 1244 * Line breaks should be written using writeLineDelimiter() | |
| 1245 * @param lineOffset offset of the line. 0 based from the start of the | |
| 1246 * widget document. Any text occurring before the start offset or after the | |
| 1247 * end offset specified during object creation is ignored. | |
| 1248 * @exception DWTException <ul> | |
| 1249 * <li>ERROR_IO when the writer is closed.</li> | |
| 1250 * </ul> | |
| 1251 */ | |
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1252 public void writeLine(String line, int lineOffset) { |
| 155 | 1253 if (isClosed_) { |
| 1254 DWT.error(DWT.ERROR_IO); | |
| 1255 } | |
| 1256 int writeOffset = startOffset - lineOffset; | |
| 1257 int lineLength = line.length; | |
| 1258 int lineIndex; | |
| 1259 if (writeOffset >= lineLength) { | |
| 1260 return; // whole line is outside write range | |
| 1261 } else if (writeOffset > 0) { | |
| 1262 lineIndex = writeOffset; // line starts before write start | |
| 1263 } else { | |
| 1264 lineIndex = 0; | |
| 1265 } | |
| 1266 int copyEnd = Math.min(lineLength, endOffset - lineOffset); | |
| 1267 if (lineIndex < copyEnd) { | |
| 1268 write(line[lineIndex .. copyEnd]); | |
| 1269 } | |
| 1270 } | |
| 1271 /** | |
| 1272 * Appends the specified line delimiter to the data. | |
| 1273 * | |
| 1274 * @param lineDelimiter line delimiter to write | |
| 1275 * @exception DWTException <ul> | |
| 1276 * <li>ERROR_IO when the writer is closed.</li> | |
| 1277 * </ul> | |
| 1278 */ | |
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1279 public void writeLineDelimiter(String lineDelimiter) { |
| 155 | 1280 if (isClosed_) { |
| 1281 DWT.error(DWT.ERROR_IO); | |
| 1282 } | |
| 1283 write(lineDelimiter); | |
| 1284 } | |
| 1285 } | |
| 1286 | |
| 1287 /** | |
| 1288 * Constructs a new instance of this class given its parent | |
| 1289 * and a style value describing its behavior and appearance. | |
| 1290 * <p> | |
| 1291 * The style value is either one of the style constants defined in | |
| 1292 * class <code>DWT</code> which is applicable to instances of this | |
| 1293 * class, or must be built by <em>bitwise OR</em>'ing together | |
| 1294 * (that is, using the <code>int</code> "|" operator) two or more | |
| 1295 * of those <code>DWT</code> style constants. The class description | |
| 1296 * lists the style constants that are applicable to the class. | |
| 1297 * Style bits are also inherited from superclasses. | |
| 1298 * </p> | |
| 1299 * | |
| 1300 * @param parent a widget which will be the parent of the new instance (cannot be null) | |
| 1301 * @param style the style of widget to construct | |
| 1302 * | |
| 1303 * @exception IllegalArgumentException <ul> | |
| 1304 * <li>ERROR_NULL_ARGUMENT - if the parent is null</li> | |
| 1305 * </ul> | |
| 1306 * @exception DWTException <ul> | |
| 1307 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li> | |
| 1308 * </ul> | |
| 1309 * | |
| 1310 * @see DWT#FULL_SELECTION | |
| 1311 * @see DWT#MULTI | |
| 1312 * @see DWT#READ_ONLY | |
| 1313 * @see DWT#SINGLE | |
| 1314 * @see DWT#WRAP | |
| 1315 * @see #getStyle | |
| 1316 */ | |
| 1317 public this(Composite parent, int style) { | |
| 1318 selection = new Point(0, 0); | |
| 1319 super(parent, checkStyle(style)); | |
| 1320 // set the fg in the OS to ensure that these are the same as StyledText, necessary | |
| 1321 // for ensuring that the bg/fg the IME box uses is the same as what StyledText uses | |
| 1322 super.setForeground(getForeground()); | |
| 1323 super.setDragDetect(false); | |
| 1324 Display display = getDisplay(); | |
| 1325 isMirrored_ = (super.getStyle() & DWT.MIRRORED) !is 0; | |
| 1326 fixedLineHeight = true; | |
| 1327 if ((style & DWT.READ_ONLY) !is 0) { | |
| 1328 setEditable(false); | |
| 1329 } | |
| 1330 leftMargin = rightMargin = isBidiCaret() ? BIDI_CARET_WIDTH - 1: 0; | |
| 1331 if ((style & DWT.SINGLE) !is 0 && (style & DWT.BORDER) !is 0) { | |
| 1332 leftMargin = topMargin = rightMargin = bottomMargin = 2; | |
| 1333 } | |
| 1334 alignment = style & (DWT.LEFT | DWT.RIGHT | DWT.CENTER); | |
| 1335 if (alignment is 0) alignment = DWT.LEFT; | |
| 1336 clipboard = new Clipboard(display); | |
| 1337 installDefaultContent(); | |
| 1338 renderer = new StyledTextRenderer(getDisplay(), this); | |
| 1339 renderer.setContent(content); | |
| 1340 renderer.setFont(getFont(), tabLength); | |
| 213 | 1341 ime = new IME(this, DWT.NONE); |
| 1342 defaultCaret = new Caret(this, DWT.NONE); | |
| 155 | 1343 if ((style & DWT.WRAP) !is 0) { |
| 1344 setWordWrap(true); | |
| 1345 } | |
| 1346 if (isBidiCaret()) { | |
| 1347 createCaretBitmaps(); | |
| 1348 Runnable runnable = new class() Runnable { | |
| 1349 public void run() { | |
| 1350 int direction = BidiUtil.getKeyboardLanguage() is BidiUtil.KEYBOARD_BIDI ? DWT.RIGHT : DWT.LEFT; | |
| 1351 if (direction is caretDirection) return; | |
| 1352 if (getCaret() !is defaultCaret) return; | |
| 1353 Point newCaretPos = getPointAtOffset(caretOffset); | |
| 1354 setCaretLocation(newCaretPos, direction); | |
| 1355 } | |
| 1356 }; | |
| 213 | 1357 BidiUtil.addLanguageListener(this, runnable); |
| 155 | 1358 } |
| 1359 setCaret(defaultCaret); | |
| 1360 calculateScrollBars(); | |
| 1361 createKeyBindings(); | |
| 1362 setCursor(display.getSystemCursor(DWT.CURSOR_IBEAM)); | |
| 1363 installListeners(); | |
| 1364 initializeAccessible(); | |
| 1365 setData("DEFAULT_DROP_TARGET_EFFECT", new StyledTextDropTargetEffect(this)); | |
| 1366 } | |
| 1367 /** | |
| 1368 * Adds an extended modify listener. An ExtendedModify event is sent by the | |
| 1369 * widget when the widget text has changed. | |
| 1370 * | |
| 1371 * @param extendedModifyListener the listener | |
| 1372 * @exception DWTException <ul> | |
| 1373 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1374 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1375 * </ul> | |
| 1376 * @exception IllegalArgumentException <ul> | |
| 1377 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1378 * </ul> | |
| 1379 */ | |
| 1380 public void addExtendedModifyListener(ExtendedModifyListener extendedModifyListener) { | |
| 1381 checkWidget(); | |
| 1382 if (extendedModifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1383 StyledTextListener typedListener = new StyledTextListener(extendedModifyListener); | |
| 1384 addListener(ExtendedModify, typedListener); | |
| 1385 } | |
| 1386 /** | |
| 1387 * Adds a bidirectional segment listener. | |
| 1388 * <p> | |
| 1389 * A BidiSegmentEvent is sent | |
| 1390 * whenever a line of text is measured or rendered. The user can | |
| 1391 * specify text ranges in the line that should be treated as if they | |
| 1392 * had a different direction than the surrounding text. | |
| 1393 * This may be used when adjacent segments of right-to-left text should | |
| 1394 * not be reordered relative to each other. | |
| 1395 * E.g., Multiple Java string literals in a right-to-left language | |
| 1396 * should generally remain in logical order to each other, that is, the | |
| 1397 * way they are stored. | |
| 1398 * </p> | |
| 1399 * | |
| 1400 * @param listener the listener | |
| 1401 * @exception DWTException <ul> | |
| 1402 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1403 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1404 * </ul> | |
| 1405 * @exception IllegalArgumentException <ul> | |
| 1406 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1407 * </ul> | |
| 1408 * @see BidiSegmentEvent | |
| 1409 * @since 2.0 | |
| 1410 */ | |
| 1411 public void addBidiSegmentListener(BidiSegmentListener listener) { | |
| 1412 checkWidget(); | |
| 1413 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1414 addListener(LineGetSegments, new StyledTextListener(listener)); | |
| 1415 } | |
| 1416 /** | |
| 1417 * Adds a line background listener. A LineGetBackground event is sent by the | |
| 1418 * widget to determine the background color for a line. | |
| 1419 * | |
| 1420 * @param listener the listener | |
| 1421 * @exception DWTException <ul> | |
| 1422 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1423 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1424 * </ul> | |
| 1425 * @exception IllegalArgumentException <ul> | |
| 1426 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1427 * </ul> | |
| 1428 */ | |
| 1429 public void addLineBackgroundListener(LineBackgroundListener listener) { | |
| 1430 checkWidget(); | |
| 1431 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1432 if (!isListening(LineGetBackground)) { | |
| 1433 renderer.clearLineBackground(0, content.getLineCount()); | |
| 1434 } | |
| 1435 addListener(LineGetBackground, new StyledTextListener(listener)); | |
| 1436 } | |
| 1437 /** | |
| 1438 * Adds a line style listener. A LineGetStyle event is sent by the widget to | |
| 1439 * determine the styles for a line. | |
| 1440 * | |
| 1441 * @param listener the listener | |
| 1442 * @exception DWTException <ul> | |
| 1443 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1444 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1445 * </ul> | |
| 1446 * @exception IllegalArgumentException <ul> | |
| 1447 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1448 * </ul> | |
| 1449 */ | |
| 1450 public void addLineStyleListener(LineStyleListener listener) { | |
| 1451 checkWidget(); | |
| 1452 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1453 if (!isListening(LineGetStyle)) { | |
| 1454 setStyleRanges(0, 0, null, null, true); | |
| 1455 renderer.clearLineStyle(0, content.getLineCount()); | |
| 1456 } | |
| 1457 addListener(LineGetStyle, new StyledTextListener(listener)); | |
| 1458 } | |
| 1459 /** | |
| 1460 * Adds a modify listener. A Modify event is sent by the widget when the widget text | |
| 1461 * has changed. | |
| 1462 * | |
| 1463 * @param modifyListener the listener | |
| 1464 * @exception DWTException <ul> | |
| 1465 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1466 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1467 * </ul> | |
| 1468 * @exception IllegalArgumentException <ul> | |
| 1469 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1470 * </ul> | |
| 1471 */ | |
| 1472 public void addModifyListener(ModifyListener modifyListener) { | |
| 1473 checkWidget(); | |
| 1474 if (modifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1475 addListener(DWT.Modify, new TypedListener(modifyListener)); | |
| 1476 } | |
| 1477 /** | |
| 1478 * Adds a paint object listener. A paint object event is sent by the widget when an object | |
| 1479 * needs to be drawn. | |
| 1480 * | |
| 1481 * @param listener the listener | |
| 1482 * @exception DWTException <ul> | |
| 1483 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1484 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1485 * </ul> | |
| 1486 * @exception IllegalArgumentException <ul> | |
| 1487 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1488 * </ul> | |
| 1489 * | |
| 1490 * @since 3.2 | |
| 1491 * | |
| 1492 * @see PaintObjectListener | |
| 1493 * @see PaintObjectEvent | |
| 1494 */ | |
| 1495 public void addPaintObjectListener(PaintObjectListener listener) { | |
| 1496 checkWidget(); | |
| 1497 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1498 addListener(PaintObject, new StyledTextListener(listener)); | |
| 1499 } | |
| 1500 /** | |
| 1501 * Adds a selection listener. A Selection event is sent by the widget when the | |
| 1502 * user changes the selection. | |
| 1503 * <p> | |
| 1504 * When <code>widgetSelected</code> is called, the event x and y fields contain | |
| 1505 * the start and end caret indices of the selection. | |
| 1506 * <code>widgetDefaultSelected</code> is not called for StyledTexts. | |
| 1507 * </p> | |
| 1508 * | |
| 1509 * @param listener the listener which should be notified when the user changes the receiver's selection | |
| 1510 | |
| 1511 * @exception IllegalArgumentException <ul> | |
| 1512 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 1513 * </ul> | |
| 1514 * @exception DWTException <ul> | |
| 1515 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1516 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1517 * </ul> | |
| 1518 * | |
| 1519 * @see SelectionListener | |
| 1520 * @see #removeSelectionListener | |
| 1521 * @see SelectionEvent | |
| 1522 */ | |
| 1523 public void addSelectionListener(SelectionListener listener) { | |
| 1524 checkWidget(); | |
| 1525 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1526 addListener(DWT.Selection, new TypedListener(listener)); | |
| 1527 } | |
| 1528 /** | |
| 1529 * Adds a verify key listener. A VerifyKey event is sent by the widget when a key | |
| 1530 * is pressed. The widget ignores the key press if the listener sets the doit field | |
| 1531 * of the event to false. | |
| 1532 * | |
| 1533 * @param listener the listener | |
| 1534 * @exception DWTException <ul> | |
| 1535 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1536 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1537 * </ul> | |
| 1538 * @exception IllegalArgumentException <ul> | |
| 1539 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1540 * </ul> | |
| 1541 */ | |
| 1542 public void addVerifyKeyListener(VerifyKeyListener listener) { | |
| 1543 checkWidget(); | |
| 1544 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1545 addListener(VerifyKey, new StyledTextListener(listener)); | |
| 1546 } | |
| 1547 /** | |
| 1548 * Adds a verify listener. A Verify event is sent by the widget when the widget text | |
| 1549 * is about to change. The listener can set the event text and the doit field to | |
| 1550 * change the text that is set in the widget or to force the widget to ignore the | |
| 1551 * text change. | |
| 1552 * | |
| 1553 * @param verifyListener the listener | |
| 1554 * @exception DWTException <ul> | |
| 1555 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1556 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1557 * </ul> | |
| 1558 * @exception IllegalArgumentException <ul> | |
| 1559 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1560 * </ul> | |
| 1561 */ | |
| 1562 public void addVerifyListener(VerifyListener verifyListener) { | |
| 1563 checkWidget(); | |
| 1564 if (verifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1565 addListener(DWT.Verify, new TypedListener(verifyListener)); | |
| 1566 } | |
| 1567 /** | |
| 1568 * Adds a word movement listener. A movement event is sent when the boundary | |
| 1569 * of a word is needed. For example, this occurs during word next and word | |
| 1570 * previous actions. | |
| 1571 * | |
| 1572 * @param movementListener the listener | |
| 1573 * @exception DWTException <ul> | |
| 1574 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1575 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1576 * </ul> | |
| 1577 * @exception IllegalArgumentException <ul> | |
| 1578 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1579 * </ul> | |
| 1580 * | |
| 1581 * @see MovementEvent | |
| 1582 * @see MovementListener | |
| 1583 * @see #removeWordMovementListener | |
| 1584 * | |
| 1585 * @since 3.3 | |
| 1586 */ | |
| 1587 public void addWordMovementListener(MovementListener movementListener) { | |
| 1588 checkWidget(); | |
| 1589 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1590 addListener(WordNext, new StyledTextListener(movementListener)); | |
| 1591 addListener(WordPrevious, new StyledTextListener(movementListener)); | |
| 1592 } | |
| 1593 /** | |
| 1594 * Appends a string to the text at the end of the widget. | |
| 1595 * | |
| 1596 * @param string the string to be appended | |
|
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1597 * @see #replaceTextRange(int,int,String) |
| 155 | 1598 * @exception DWTException <ul> |
| 1599 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1600 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1601 * </ul> | |
| 1602 * @exception IllegalArgumentException <ul> | |
| 1603 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 1604 * </ul> | |
| 1605 */ | |
|
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1606 public void append(String string) { |
| 155 | 1607 checkWidget(); |
| 1608 if (string is null) { | |
| 1609 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 1610 } | |
| 1611 int lastChar = Math.max(getCharCount(), 0); | |
| 1612 replaceTextRange(lastChar, 0, string); | |
| 1613 } | |
| 1614 /** | |
| 1615 * Calculates the scroll bars | |
| 1616 */ | |
| 1617 void calculateScrollBars() { | |
| 1618 ScrollBar horizontalBar = getHorizontalBar(); | |
| 1619 ScrollBar verticalBar = getVerticalBar(); | |
| 1620 setScrollBars(true); | |
| 1621 if (verticalBar !is null) { | |
| 1622 verticalBar.setIncrement(getVerticalIncrement()); | |
| 1623 } | |
| 1624 if (horizontalBar !is null) { | |
| 1625 horizontalBar.setIncrement(getHorizontalIncrement()); | |
| 1626 } | |
| 1627 } | |
| 1628 /** | |
| 1629 * Calculates the top index based on the current vertical scroll offset. | |
| 1630 * The top index is the index of the topmost fully visible line or the | |
| 1631 * topmost partially visible line if no line is fully visible. | |
| 1632 * The top index starts at 0. | |
| 1633 */ | |
| 1634 void calculateTopIndex(int delta) { | |
| 1635 int oldTopIndex = topIndex; | |
| 1636 int oldTopIndexY = topIndexY; | |
| 1637 if (isFixedLineHeight()) { | |
| 1638 int verticalIncrement = getVerticalIncrement(); | |
| 1639 if (verticalIncrement is 0) { | |
| 1640 return; | |
| 1641 } | |
| 1642 topIndex = Compatibility.ceil(getVerticalScrollOffset(), verticalIncrement); | |
| 1643 // Set top index to partially visible top line if no line is fully | |
| 1644 // visible but at least some of the widget client area is visible. | |
| 1645 // Fixes bug 15088. | |
| 1646 if (topIndex > 0) { | |
| 1647 if (clientAreaHeight > 0) { | |
| 1648 int bottomPixel = getVerticalScrollOffset() + clientAreaHeight; | |
| 1649 int fullLineTopPixel = topIndex * verticalIncrement; | |
| 1650 int fullLineVisibleHeight = bottomPixel - fullLineTopPixel; | |
| 1651 // set top index to partially visible line if no line fully fits in | |
| 1652 // client area or if space is available but not used (the latter should | |
| 1653 // never happen because we use claimBottomFreeSpace) | |
| 1654 if (fullLineVisibleHeight < verticalIncrement) { | |
| 1655 topIndex--; | |
| 1656 } | |
| 1657 } else if (topIndex >= content.getLineCount()) { | |
| 1658 topIndex = content.getLineCount() - 1; | |
| 1659 } | |
| 1660 } | |
| 1661 } else { | |
| 1662 if (delta >= 0) { | |
| 1663 delta -= topIndexY; | |
| 1664 int lineIndex = topIndex; | |
| 1665 int lineCount = content.getLineCount(); | |
| 1666 while (lineIndex < lineCount) { | |
| 1667 if (delta <= 0) break; | |
| 1668 delta -= renderer.getLineHeight(lineIndex++); | |
| 1669 } | |
| 1670 if (lineIndex < lineCount && -delta + renderer.getLineHeight(lineIndex) <= clientAreaHeight - topMargin - bottomMargin) { | |
| 1671 topIndex = lineIndex; | |
| 1672 topIndexY = -delta; | |
| 1673 } else { | |
| 1674 topIndex = lineIndex - 1; | |
| 1675 topIndexY = -renderer.getLineHeight(topIndex) - delta; | |
| 1676 } | |
| 1677 } else { | |
| 1678 delta -= topIndexY; | |
| 1679 int lineIndex = topIndex; | |
| 1680 while (lineIndex > 0) { | |
| 1681 int lineHeight = renderer.getLineHeight(lineIndex - 1); | |
| 1682 if (delta + lineHeight > 0) break; | |
| 1683 delta += lineHeight; | |
| 1684 lineIndex--; | |
| 1685 } | |
| 1686 if (lineIndex is 0 || -delta + renderer.getLineHeight(lineIndex) <= clientAreaHeight - topMargin - bottomMargin) { | |
| 1687 topIndex = lineIndex; | |
| 1688 topIndexY = - delta; | |
| 1689 } else { | |
| 1690 topIndex = lineIndex - 1; | |
| 1691 topIndexY = - renderer.getLineHeight(topIndex) - delta; | |
| 1692 } | |
| 1693 } | |
| 1694 } | |
| 1695 if (topIndex !is oldTopIndex || oldTopIndexY !is topIndexY) { | |
| 1696 renderer.calculateClientArea(); | |
| 1697 setScrollBars(false); | |
| 1698 } | |
| 1699 } | |
| 1700 /** | |
| 1701 * Hides the scroll bars if widget is created in single line mode. | |
| 1702 */ | |
| 1703 static int checkStyle(int style) { | |
| 1704 if ((style & DWT.SINGLE) !is 0) { | |
| 1705 style &= ~(DWT.H_SCROLL | DWT.V_SCROLL | DWT.WRAP | DWT.MULTI); | |
| 1706 } else { | |
| 1707 style |= DWT.MULTI; | |
| 1708 if ((style & DWT.WRAP) !is 0) { | |
| 1709 style &= ~DWT.H_SCROLL; | |
| 1710 } | |
| 1711 } | |
| 1712 style |= DWT.NO_REDRAW_RESIZE | DWT.DOUBLE_BUFFERED | DWT.NO_BACKGROUND; | |
| 1713 return style; | |
| 1714 } | |
| 1715 /** | |
| 1716 * Scrolls down the text to use new space made available by a resize or by | |
| 1717 * deleted lines. | |
| 1718 */ | |
| 1719 void claimBottomFreeSpace() { | |
| 1720 int clientAreaHeight = this.clientAreaHeight - topMargin - bottomMargin; | |
| 1721 if (isFixedLineHeight()) { | |
| 1722 int lineHeight = renderer.getLineHeight(); | |
| 1723 int newVerticalOffset = Math.max(0, content.getLineCount() * lineHeight - clientAreaHeight); | |
| 1724 if (newVerticalOffset < getVerticalScrollOffset()) { | |
| 1725 scrollVertical(newVerticalOffset - getVerticalScrollOffset(), true); | |
| 1726 } | |
| 1727 } else { | |
| 1728 int bottomIndex = getPartialBottomIndex(); | |
| 1729 int height = getLinePixel(bottomIndex + 1); | |
| 1730 if (clientAreaHeight > height) { | |
| 1731 scrollVertical(-getAvailableHeightAbove(clientAreaHeight - height), true); | |
| 1732 } | |
| 1733 } | |
| 1734 } | |
| 1735 /** | |
| 1736 * Scrolls text to the right to use new space made available by a resize. | |
| 1737 */ | |
| 1738 void claimRightFreeSpace() { | |
| 1739 int newHorizontalOffset = Math.max(0, renderer.getWidth() - (clientAreaWidth - leftMargin - rightMargin)); | |
| 1740 if (newHorizontalOffset < horizontalScrollOffset) { | |
| 1741 // item is no longer drawn past the right border of the client area | |
| 1742 // align the right end of the item with the right border of the | |
| 1743 // client area (window is scrolled right). | |
| 1744 scrollHorizontal(newHorizontalOffset - horizontalScrollOffset, true); | |
| 1745 } | |
| 1746 } | |
| 1747 /** | |
| 1748 * Removes the widget selection. | |
| 1749 * | |
| 1750 * @param sendEvent a Selection event is sent when set to true and when the selection is actually reset. | |
| 1751 */ | |
| 1752 void clearSelection(bool sendEvent) { | |
| 1753 int selectionStart = selection.x; | |
| 1754 int selectionEnd = selection.y; | |
| 1755 resetSelection(); | |
| 1756 // redraw old selection, if any | |
| 1757 if (selectionEnd - selectionStart > 0) { | |
| 1758 int length = content.getCharCount(); | |
| 1759 // called internally to remove selection after text is removed | |
| 1760 // therefore make sure redraw range is valid. | |
| 1761 int redrawStart = Math.min(selectionStart, length); | |
| 1762 int redrawEnd = Math.min(selectionEnd, length); | |
| 1763 if (redrawEnd - redrawStart > 0) { | |
| 1764 internalRedrawRange(redrawStart, redrawEnd - redrawStart); | |
| 1765 } | |
| 1766 if (sendEvent) { | |
| 1767 sendSelectionEvent(); | |
| 1768 } | |
| 1769 } | |
| 1770 } | |
| 1771 public override Point computeSize (int wHint, int hHint, bool changed) { | |
| 1772 checkWidget(); | |
| 1773 int lineCount = (getStyle() & DWT.SINGLE) !is 0 ? 1 : content.getLineCount(); | |
| 1774 int width = 0; | |
| 1775 int height = 0; | |
| 1776 if (wHint is DWT.DEFAULT || hHint is DWT.DEFAULT) { | |
| 1777 Display display = getDisplay(); | |
| 1778 int maxHeight = display.getClientArea().height; | |
| 1779 for (int lineIndex = 0; lineIndex < lineCount; lineIndex++) { | |
| 1780 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 213 | 1781 int wrapWidth = layout.getWidth(); |
| 155 | 1782 if (wordWrap) layout.setWidth(wHint is 0 ? 1 : wHint); |
| 1783 Rectangle rect = layout.getBounds(); | |
| 1784 height += rect.height; | |
| 1785 width = Math.max(width, rect.width); | |
| 213 | 1786 layout.setWidth(wrapWidth); |
| 155 | 1787 renderer.disposeTextLayout(layout); |
| 1788 if (isFixedLineHeight() && height > maxHeight) break; | |
| 1789 } | |
| 1790 if (isFixedLineHeight()) { | |
| 1791 height = lineCount * renderer.getLineHeight(); | |
| 1792 } | |
| 1793 } | |
| 1794 // Use default values if no text is defined. | |
| 1795 if (width is 0) width = DEFAULT_WIDTH; | |
| 1796 if (height is 0) height = DEFAULT_HEIGHT; | |
| 1797 if (wHint !is DWT.DEFAULT) width = wHint; | |
| 1798 if (hHint !is DWT.DEFAULT) height = hHint; | |
| 1799 int wTrim = leftMargin + rightMargin + getCaretWidth(); | |
| 1800 int hTrim = topMargin + bottomMargin; | |
| 1801 Rectangle rect = computeTrim(0, 0, width + wTrim, height + hTrim); | |
| 1802 return new Point (rect.width, rect.height); | |
| 1803 } | |
| 1804 /** | |
| 1805 * Copies the selected text to the <code>DND.CLIPBOARD</code> clipboard. | |
| 1806 * <p> | |
| 1807 * The text will be put on the clipboard in plain text format and RTF format. | |
| 1808 * The <code>DND.CLIPBOARD</code> clipboard is used for data that is | |
| 1809 * transferred by keyboard accelerator (such as Ctrl+C/Ctrl+V) or | |
| 1810 * by menu action. | |
| 1811 * </p> | |
| 1812 * | |
| 1813 * @exception DWTException <ul> | |
| 1814 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1815 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1816 * </ul> | |
| 1817 */ | |
| 1818 public void copy() { | |
| 1819 checkWidget(); | |
| 1820 copy(DND.CLIPBOARD); | |
| 1821 } | |
| 1822 /** | |
| 1823 * Copies the selected text to the specified clipboard. The text will be put in the | |
| 1824 * clipboard in plain text format and RTF format. | |
| 1825 * <p> | |
| 1826 * The clipboardType is one of the clipboard constants defined in class | |
| 1827 * <code>DND</code>. The <code>DND.CLIPBOARD</code> clipboard is | |
| 1828 * used for data that is transferred by keyboard accelerator (such as Ctrl+C/Ctrl+V) | |
| 1829 * or by menu action. The <code>DND.SELECTION_CLIPBOARD</code> | |
| 1830 * clipboard is used for data that is transferred by selecting text and pasting | |
| 1831 * with the middle mouse button. | |
| 1832 * </p> | |
| 1833 * | |
| 1834 * @param clipboardType indicates the type of clipboard | |
| 1835 * | |
| 1836 * @exception DWTException <ul> | |
| 1837 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1838 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1839 * </ul> | |
| 1840 * | |
| 1841 * @since 3.1 | |
| 1842 */ | |
| 1843 public void copy(int clipboardType) { | |
| 1844 checkWidget(); | |
| 1845 if (clipboardType !is DND.CLIPBOARD && clipboardType !is DND.SELECTION_CLIPBOARD) return; | |
| 1846 int length = selection.y - selection.x; | |
| 1847 if (length > 0) { | |
| 1848 try { | |
| 1849 setClipboardContent(selection.x, length, clipboardType); | |
| 1850 } catch (DWTError error) { | |
| 1851 // Copy to clipboard failed. This happens when another application | |
| 1852 // is accessing the clipboard while we copy. Ignore the error. | |
| 1853 // Fixes 1GDQAVN | |
| 1854 // Rethrow all other errors. Fixes bug 17578. | |
| 1855 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 1856 throw error; | |
| 1857 } | |
| 1858 } | |
| 1859 } | |
| 1860 } | |
| 1861 /** | |
| 1862 * Returns the alignment of the widget. | |
| 1863 * | |
| 1864 * @return the alignment | |
| 1865 * | |
| 1866 * @exception DWTException <ul> | |
| 1867 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 1868 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 1869 * </ul> | |
| 1870 * | |
| 1871 * @see #getLineAlignment(int) | |
| 1872 * | |
| 1873 * @since 3.2 | |
| 1874 */ | |
| 1875 public int getAlignment() { | |
| 1876 checkWidget(); | |
| 1877 return alignment; | |
| 1878 } | |
| 1879 int getAvailableHeightAbove(int height) { | |
| 1880 int maxHeight = verticalScrollOffset; | |
| 1881 if (maxHeight is -1) { | |
| 1882 int lineIndex = topIndex - 1; | |
| 1883 maxHeight = -topIndexY; | |
| 1884 if (topIndexY > 0) { | |
| 1885 maxHeight += renderer.getLineHeight(lineIndex--); | |
| 1886 } | |
| 1887 while (height > maxHeight && lineIndex >= 0) { | |
| 1888 maxHeight += renderer.getLineHeight(lineIndex--); | |
| 1889 } | |
| 1890 } | |
| 1891 return Math.min(height, maxHeight); | |
| 1892 } | |
| 1893 int getAvailableHeightBellow(int height) { | |
| 1894 int partialBottomIndex = getPartialBottomIndex(); | |
| 1895 int topY = getLinePixel(partialBottomIndex); | |
| 1896 int lineHeight = renderer.getLineHeight(partialBottomIndex); | |
| 1897 int availableHeight = 0; | |
| 1898 int clientAreaHeight = this.clientAreaHeight - topMargin - bottomMargin; | |
| 1899 if (topY + lineHeight > clientAreaHeight) { | |
| 1900 availableHeight = lineHeight - (clientAreaHeight - topY); | |
| 1901 } | |
| 1902 int lineIndex = partialBottomIndex + 1; | |
| 1903 int lineCount = content.getLineCount(); | |
| 1904 while (height > availableHeight && lineIndex < lineCount) { | |
| 1905 availableHeight += renderer.getLineHeight(lineIndex++); | |
| 1906 } | |
| 1907 return Math.min(height, availableHeight); | |
| 1908 } | |
| 1909 /** | |
| 1910 * Returns a string that uses only the line delimiter specified by the | |
| 1911 * StyledTextContent implementation. | |
| 1912 * <p> | |
| 1913 * Returns only the first line if the widget has the DWT.SINGLE style. | |
| 1914 * </p> | |
| 1915 * | |
| 1916 * @param text the text that may have line delimiters that don't | |
| 1917 * match the model line delimiter. Possible line delimiters | |
| 1918 * are CR ('\r'), LF ('\n'), CR/LF ("\r\n") | |
| 1919 * @return the converted text that only uses the line delimiter | |
| 1920 * specified by the model. Returns only the first line if the widget | |
| 1921 * has the DWT.SINGLE style. | |
| 1922 */ | |
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1923 String getModelDelimitedText(String text) { |
| 155 | 1924 int length = text.length; |
| 1925 if (length is 0) { | |
| 1926 return text; | |
| 1927 } | |
| 1928 int crIndex = 0; | |
| 1929 int lfIndex = 0; | |
| 1930 int i = 0; | |
| 1931 StringBuffer convertedText = new StringBuffer(length); | |
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1932 String delimiter = getLineDelimiter(); |
| 155 | 1933 while (i < length) { |
| 1934 if (crIndex !is -1) { | |
| 1935 crIndex = tango.text.Util.locate( text, DWT.CR, i); | |
| 1936 if( crIndex is text.length ) crIndex = -1; | |
| 1937 } | |
| 1938 if (lfIndex !is -1) { | |
| 1939 lfIndex = tango.text.Util.locate( text, DWT.LF, i); | |
| 1940 if( lfIndex is text.length ) lfIndex = -1; | |
| 1941 } | |
| 1942 if (lfIndex is -1 && crIndex is -1) { // no more line breaks? | |
| 1943 break; | |
| 1944 } else if ((crIndex < lfIndex && crIndex !is -1) || lfIndex is -1) { | |
| 1945 convertedText.append(text[i .. crIndex]); | |
| 1946 if (lfIndex is crIndex + 1) { // CR/LF combination? | |
| 1947 i = lfIndex + 1; | |
| 1948 } else { | |
| 1949 i = crIndex + 1; | |
| 1950 } | |
| 1951 } else { // LF occurs before CR! | |
| 1952 convertedText.append(text[i .. lfIndex]); | |
| 1953 i = lfIndex + 1; | |
| 1954 } | |
| 1955 if (isSingleLine()) { | |
| 1956 break; | |
| 1957 } | |
| 1958 convertedText.append(delimiter); | |
| 1959 } | |
| 1960 // copy remaining text if any and if not in single line mode or no | |
| 1961 // text copied thus far (because there only is one line) | |
| 1962 if (i < length && (!isSingleLine() || convertedText.length() is 0)) { | |
| 1963 convertedText.append(text[i .. $]); | |
| 1964 } | |
| 1965 return convertedText.toString(); | |
| 1966 } | |
| 1967 bool checkDragDetect(Event event) { | |
| 1968 if (!isListening(DWT.DragDetect)) return false; | |
| 1969 if (IS_MOTIF) { | |
| 1970 if (event.button !is 2) return false; | |
| 1971 } else { | |
| 1972 if (event.button !is 1) return false; | |
| 1973 } | |
| 1974 if (selection.x is selection.y) return false; | |
| 213 | 1975 int offset = getOffsetAtPoint(event.x, event.y, null, true); |
| 1976 if (selection.x <= offset && offset < selection.y) { | |
| 155 | 1977 return dragDetect(event); |
| 1978 } | |
| 1979 return false; | |
| 1980 } | |
| 1981 /** | |
| 1982 * Creates default key bindings. | |
| 1983 */ | |
| 1984 void createKeyBindings() { | |
| 1985 int nextKey = isMirrored() ? DWT.ARROW_LEFT : DWT.ARROW_RIGHT; | |
| 1986 int previousKey = isMirrored() ? DWT.ARROW_RIGHT : DWT.ARROW_LEFT; | |
| 1987 | |
| 1988 // Navigation | |
| 1989 setKeyBinding(DWT.ARROW_UP, ST.LINE_UP); | |
| 1990 setKeyBinding(DWT.ARROW_DOWN, ST.LINE_DOWN); | |
| 1991 if (IS_CARBON) { | |
| 1992 setKeyBinding(previousKey | DWT.MOD1, ST.LINE_START); | |
| 1993 setKeyBinding(nextKey | DWT.MOD1, ST.LINE_END); | |
| 1994 setKeyBinding(DWT.HOME, ST.TEXT_START); | |
| 1995 setKeyBinding(DWT.END, ST.TEXT_END); | |
| 1996 setKeyBinding(DWT.ARROW_UP | DWT.MOD1, ST.TEXT_START); | |
| 1997 setKeyBinding(DWT.ARROW_DOWN | DWT.MOD1, ST.TEXT_END); | |
| 1998 setKeyBinding(nextKey | DWT.MOD3, ST.WORD_NEXT); | |
| 1999 setKeyBinding(previousKey | DWT.MOD3, ST.WORD_PREVIOUS); | |
| 2000 } else { | |
| 2001 setKeyBinding(DWT.HOME, ST.LINE_START); | |
| 2002 setKeyBinding(DWT.END, ST.LINE_END); | |
| 2003 setKeyBinding(DWT.HOME | DWT.MOD1, ST.TEXT_START); | |
| 2004 setKeyBinding(DWT.END | DWT.MOD1, ST.TEXT_END); | |
| 2005 setKeyBinding(nextKey | DWT.MOD1, ST.WORD_NEXT); | |
| 2006 setKeyBinding(previousKey | DWT.MOD1, ST.WORD_PREVIOUS); | |
| 2007 } | |
| 2008 setKeyBinding(DWT.PAGE_UP, ST.PAGE_UP); | |
| 2009 setKeyBinding(DWT.PAGE_DOWN, ST.PAGE_DOWN); | |
| 2010 setKeyBinding(DWT.PAGE_UP | DWT.MOD1, ST.WINDOW_START); | |
| 2011 setKeyBinding(DWT.PAGE_DOWN | DWT.MOD1, ST.WINDOW_END); | |
| 2012 setKeyBinding(nextKey, ST.COLUMN_NEXT); | |
| 2013 setKeyBinding(previousKey, ST.COLUMN_PREVIOUS); | |
| 2014 | |
| 2015 // Selection | |
| 2016 setKeyBinding(DWT.ARROW_UP | DWT.MOD2, ST.SELECT_LINE_UP); | |
| 2017 setKeyBinding(DWT.ARROW_DOWN | DWT.MOD2, ST.SELECT_LINE_DOWN); | |
| 2018 if (IS_CARBON) { | |
| 2019 setKeyBinding(previousKey | DWT.MOD1 | DWT.MOD2, ST.SELECT_LINE_START); | |
| 2020 setKeyBinding(nextKey | DWT.MOD1 | DWT.MOD2, ST.SELECT_LINE_END); | |
| 2021 setKeyBinding(DWT.HOME | DWT.MOD2, ST.SELECT_TEXT_START); | |
| 2022 setKeyBinding(DWT.END | DWT.MOD2, ST.SELECT_TEXT_END); | |
| 2023 setKeyBinding(DWT.ARROW_UP | DWT.MOD1 | DWT.MOD2, ST.SELECT_TEXT_START); | |
| 2024 setKeyBinding(DWT.ARROW_DOWN | DWT.MOD1 | DWT.MOD2, ST.SELECT_TEXT_END); | |
| 2025 setKeyBinding(nextKey | DWT.MOD2 | DWT.MOD3, ST.SELECT_WORD_NEXT); | |
| 2026 setKeyBinding(previousKey | DWT.MOD2 | DWT.MOD3, ST.SELECT_WORD_PREVIOUS); | |
| 2027 } else { | |
| 2028 setKeyBinding(DWT.HOME | DWT.MOD2, ST.SELECT_LINE_START); | |
| 2029 setKeyBinding(DWT.END | DWT.MOD2, ST.SELECT_LINE_END); | |
| 2030 setKeyBinding(DWT.HOME | DWT.MOD1 | DWT.MOD2, ST.SELECT_TEXT_START); | |
| 2031 setKeyBinding(DWT.END | DWT.MOD1 | DWT.MOD2, ST.SELECT_TEXT_END); | |
| 2032 setKeyBinding(nextKey | DWT.MOD1 | DWT.MOD2, ST.SELECT_WORD_NEXT); | |
| 2033 setKeyBinding(previousKey | DWT.MOD1 | DWT.MOD2, ST.SELECT_WORD_PREVIOUS); | |
| 2034 } | |
| 2035 setKeyBinding(DWT.PAGE_UP | DWT.MOD2, ST.SELECT_PAGE_UP); | |
| 2036 setKeyBinding(DWT.PAGE_DOWN | DWT.MOD2, ST.SELECT_PAGE_DOWN); | |
| 2037 setKeyBinding(DWT.PAGE_UP | DWT.MOD1 | DWT.MOD2, ST.SELECT_WINDOW_START); | |
| 2038 setKeyBinding(DWT.PAGE_DOWN | DWT.MOD1 | DWT.MOD2, ST.SELECT_WINDOW_END); | |
| 2039 setKeyBinding(nextKey | DWT.MOD2, ST.SELECT_COLUMN_NEXT); | |
| 2040 setKeyBinding(previousKey | DWT.MOD2, ST.SELECT_COLUMN_PREVIOUS); | |
| 2041 | |
| 2042 // Modification | |
| 2043 // Cut, Copy, Paste | |
| 2044 setKeyBinding('X' | DWT.MOD1, ST.CUT); | |
| 2045 setKeyBinding('C' | DWT.MOD1, ST.COPY); | |
| 2046 setKeyBinding('V' | DWT.MOD1, ST.PASTE); | |
| 2047 if (IS_CARBON) { | |
| 2048 setKeyBinding(DWT.DEL | DWT.MOD2, ST.DELETE_NEXT); | |
| 2049 setKeyBinding(DWT.BS | DWT.MOD3, ST.DELETE_WORD_PREVIOUS); | |
| 2050 setKeyBinding(DWT.DEL | DWT.MOD3, ST.DELETE_WORD_NEXT); | |
| 2051 } else { | |
| 2052 // Cut, Copy, Paste Wordstar style | |
| 2053 setKeyBinding(DWT.DEL | DWT.MOD2, ST.CUT); | |
| 2054 setKeyBinding(DWT.INSERT | DWT.MOD1, ST.COPY); | |
| 2055 setKeyBinding(DWT.INSERT | DWT.MOD2, ST.PASTE); | |
| 2056 } | |
| 2057 setKeyBinding(DWT.BS | DWT.MOD2, ST.DELETE_PREVIOUS); | |
| 2058 setKeyBinding(DWT.BS, ST.DELETE_PREVIOUS); | |
| 2059 setKeyBinding(DWT.DEL, ST.DELETE_NEXT); | |
| 2060 setKeyBinding(DWT.BS | DWT.MOD1, ST.DELETE_WORD_PREVIOUS); | |
| 2061 setKeyBinding(DWT.DEL | DWT.MOD1, ST.DELETE_WORD_NEXT); | |
| 2062 | |
| 2063 // Miscellaneous | |
| 2064 setKeyBinding(DWT.INSERT, ST.TOGGLE_OVERWRITE); | |
| 2065 } | |
| 2066 /** | |
| 2067 * Create the bitmaps to use for the caret in bidi mode. This | |
| 2068 * method only needs to be called upon widget creation and when the | |
| 2069 * font changes (the caret bitmap height needs to match font height). | |
| 2070 */ | |
| 2071 void createCaretBitmaps() { | |
| 2072 int caretWidth = BIDI_CARET_WIDTH; | |
| 2073 Display display = getDisplay(); | |
| 2074 if (leftCaretBitmap !is null) { | |
| 2075 if (defaultCaret !is null && leftCaretBitmap==defaultCaret.getImage()) { | |
| 2076 defaultCaret.setImage(null); | |
| 2077 } | |
| 2078 leftCaretBitmap.dispose(); | |
| 2079 } | |
| 2080 int lineHeight = renderer.getLineHeight(); | |
| 2081 leftCaretBitmap = new Image(display, caretWidth, lineHeight); | |
| 2082 GC gc = new GC (leftCaretBitmap); | |
| 2083 gc.setBackground(display.getSystemColor(DWT.COLOR_BLACK)); | |
| 2084 gc.fillRectangle(0, 0, caretWidth, lineHeight); | |
| 2085 gc.setForeground(display.getSystemColor(DWT.COLOR_WHITE)); | |
| 2086 gc.drawLine(0,0,0,lineHeight); | |
| 2087 gc.drawLine(0,0,caretWidth-1,0); | |
| 2088 gc.drawLine(0,1,1,1); | |
| 2089 gc.dispose(); | |
| 2090 | |
| 2091 if (rightCaretBitmap !is null) { | |
| 2092 if (defaultCaret !is null && rightCaretBitmap==defaultCaret.getImage()) { | |
| 2093 defaultCaret.setImage(null); | |
| 2094 } | |
| 2095 rightCaretBitmap.dispose(); | |
| 2096 } | |
| 2097 rightCaretBitmap = new Image(display, caretWidth, lineHeight); | |
| 2098 gc = new GC (rightCaretBitmap); | |
| 2099 gc.setBackground(display.getSystemColor(DWT.COLOR_BLACK)); | |
| 2100 gc.fillRectangle(0, 0, caretWidth, lineHeight); | |
| 2101 gc.setForeground(display.getSystemColor(DWT.COLOR_WHITE)); | |
| 2102 gc.drawLine(caretWidth-1,0,caretWidth-1,lineHeight); | |
| 2103 gc.drawLine(0,0,caretWidth-1,0); | |
| 2104 gc.drawLine(caretWidth-1,1,1,1); | |
| 2105 gc.dispose(); | |
| 2106 } | |
| 2107 /** | |
| 2108 * Moves the selected text to the clipboard. The text will be put in the | |
| 2109 * clipboard in plain text format and RTF format. | |
| 2110 * | |
| 2111 * @exception DWTException <ul> | |
| 2112 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 2113 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 2114 * </ul> | |
| 2115 */ | |
| 2116 public void cut(){ | |
| 2117 checkWidget(); | |
| 2118 int length = selection.y - selection.x; | |
| 2119 if (length > 0) { | |
| 2120 try { | |
| 2121 setClipboardContent(selection.x, length, DND.CLIPBOARD); | |
| 2122 } catch (DWTError error) { | |
| 2123 // Copy to clipboard failed. This happens when another application | |
| 2124 // is accessing the clipboard while we copy. Ignore the error. | |
| 2125 // Fixes 1GDQAVN | |
| 2126 // Rethrow all other errors. Fixes bug 17578. | |
| 2127 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 2128 throw error; | |
| 2129 } | |
| 2130 // Abort cut operation if copy to clipboard fails. | |
| 2131 // Fixes bug 21030. | |
| 2132 return; | |
| 2133 } | |
| 2134 doDelete(); | |
| 2135 } | |
| 2136 } | |
| 2137 /** | |
| 2138 * A mouse move event has occurred. See if we should start autoscrolling. If | |
| 2139 * the move position is outside of the client area, initiate autoscrolling. | |
| 2140 * Otherwise, we've moved back into the widget so end autoscrolling. | |
| 2141 */ | |
| 2142 void doAutoScroll(Event event) { | |
| 2143 if (event.y > clientAreaHeight) { | |
| 2144 doAutoScroll(DWT.DOWN, event.y - clientAreaHeight); | |
| 2145 } else if (event.y < 0) { | |
| 2146 doAutoScroll(DWT.UP, -event.y); | |
| 2147 } else if (event.x < leftMargin && !wordWrap) { | |
| 2148 doAutoScroll(ST.COLUMN_PREVIOUS, leftMargin - event.x); | |
| 2149 } else if (event.x > clientAreaWidth - leftMargin - rightMargin && !wordWrap) { | |
| 2150 doAutoScroll(ST.COLUMN_NEXT, event.x - (clientAreaWidth - leftMargin - rightMargin)); | |
| 2151 } else { | |
| 2152 endAutoScroll(); | |
| 2153 } | |
| 2154 } | |
| 2155 /** | |
| 2156 * Initiates autoscrolling. | |
| 2157 * | |
| 2158 * @param direction DWT.UP, DWT.DOWN, DWT.COLUMN_NEXT, DWT.COLUMN_PREVIOUS | |
| 2159 */ | |
| 2160 void doAutoScroll(int direction, int distance) { | |
| 2161 autoScrollDistance = distance; | |
| 2162 // If we're already autoscrolling in the given direction do nothing | |
| 2163 if (autoScrollDirection is direction) { | |
| 2164 return; | |
| 2165 } | |
| 2166 | |
| 2167 Runnable timer = null; | |
| 2168 final Display disp = getDisplay(); | |
| 2169 // Set a timer that will simulate the user pressing and holding | |
| 2170 // down a cursor key (i.e., arrowUp, arrowDown). | |
| 2171 if (direction is DWT.UP) { | |
| 2172 timer = new class(disp) Runnable { | |
| 2173 Display display; | |
| 2174 this( Display d ){ this.display = d; } | |
| 2175 public void run() { | |
| 2176 if (autoScrollDirection is DWT.UP) { | |
| 2177 doSelectionPageUp(autoScrollDistance); | |
| 2178 display.timerExec(V_SCROLL_RATE, this); | |
| 2179 } | |
| 2180 } | |
| 2181 }; | |
| 2182 autoScrollDirection = direction; | |
| 2183 display.timerExec(V_SCROLL_RATE, timer); | |
| 2184 } else if (direction is DWT.DOWN) { | |
| 2185 timer = new class(disp) Runnable { | |
| 2186 Display display; | |
| 2187 this( Display d ){ this.display = d; } | |
| 2188 public void run() { | |
| 2189 if (autoScrollDirection is DWT.DOWN) { | |
| 2190 doSelectionPageDown(autoScrollDistance); | |
| 2191 display.timerExec(V_SCROLL_RATE, this); | |
| 2192 } | |
| 2193 } | |
| 2194 }; | |
| 2195 autoScrollDirection = direction; | |
| 2196 display.timerExec(V_SCROLL_RATE, timer); | |
| 2197 } else if (direction is ST.COLUMN_NEXT) { | |
| 2198 timer = new class(disp) Runnable { | |
| 2199 Display display; | |
| 2200 this( Display d ){ this.display = d; } | |
| 2201 public void run() { | |
| 2202 if (autoScrollDirection is ST.COLUMN_NEXT) { | |
| 2203 doVisualNext(); | |
| 2204 setMouseWordSelectionAnchor(); | |
| 2205 doMouseSelection(); | |
| 2206 display.timerExec(H_SCROLL_RATE, this); | |
| 2207 } | |
| 2208 } | |
| 2209 }; | |
| 2210 autoScrollDirection = direction; | |
| 2211 display.timerExec(H_SCROLL_RATE, timer); | |
| 2212 } else if (direction is ST.COLUMN_PREVIOUS) { | |
| 2213 timer = new class(disp) Runnable { | |
| 2214 Display display; | |
| 2215 this( Display d ){ this.display = d; } | |
| 2216 public void run() { | |
| 2217 if (autoScrollDirection is ST.COLUMN_PREVIOUS) { | |
| 2218 doVisualPrevious(); | |
| 2219 setMouseWordSelectionAnchor(); | |
| 2220 doMouseSelection(); | |
| 2221 display.timerExec(H_SCROLL_RATE, this); | |
| 2222 } | |
| 2223 } | |
| 2224 }; | |
| 2225 autoScrollDirection = direction; | |
| 2226 display.timerExec(H_SCROLL_RATE, timer); | |
| 2227 } | |
| 2228 } | |
| 2229 /** | |
| 2230 * Deletes the previous character. Delete the selected text if any. | |
| 2231 * Move the caret in front of the deleted text. | |
| 2232 */ | |
| 2233 void doBackspace() { | |
| 2234 Event event = new Event(); | |
| 2235 event.text = ""; | |
| 2236 if (selection.x !is selection.y) { | |
| 2237 event.start = selection.x; | |
| 2238 event.end = selection.y; | |
| 2239 sendKeyEvent(event); | |
| 2240 } else if (caretOffset > 0) { | |
| 2241 int lineIndex = content.getLineAtOffset(caretOffset); | |
| 2242 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 2243 if (caretOffset is lineOffset) { | |
| 2244 lineOffset = content.getOffsetAtLine(lineIndex - 1); | |
| 2245 event.start = lineOffset + content.getLine(lineIndex - 1).length; | |
| 2246 event.end = caretOffset; | |
| 2247 } else { | |
| 2248 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2249 int start = layout.getPreviousOffset(caretOffset - lineOffset, DWT.MOVEMENT_CHAR); | |
| 2250 renderer.disposeTextLayout(layout); | |
| 2251 event.start = start + lineOffset; | |
| 2252 event.end = caretOffset; | |
| 2253 } | |
| 2254 sendKeyEvent(event); | |
| 2255 } | |
| 2256 } | |
| 2257 /** | |
| 2258 * Replaces the selection with the character or insert the character at the | |
| 2259 * current caret position if no selection exists. | |
| 2260 * <p> | |
| 2261 * If a carriage return was typed replace it with the line break character | |
| 2262 * used by the widget on this platform. | |
| 2263 * </p> | |
| 2264 * | |
| 2265 * @param key the character typed by the user | |
| 2266 */ | |
| 2267 void doContent(char key) { | |
| 2268 Event event = new Event(); | |
| 2269 event.start = selection.x; | |
| 2270 event.end = selection.y; | |
| 2271 // replace a CR line break with the widget line break | |
| 2272 // CR does not make sense on Windows since most (all?) applications | |
| 2273 // don't recognize CR as a line break. | |
| 2274 if (key is DWT.CR || key is DWT.LF) { | |
| 2275 if (!isSingleLine()) { | |
| 2276 event.text = getLineDelimiter(); | |
| 2277 } | |
| 2278 } else if (selection.x is selection.y && overwrite && key !is TAB) { | |
| 2279 // no selection and overwrite mode is on and the typed key is not a | |
| 2280 // tab character (tabs are always inserted without overwriting)? | |
| 2281 int lineIndex = content.getLineAtOffset(event.end); | |
| 2282 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
|
2283 String line = content.getLine(lineIndex); |
| 155 | 2284 // replace character at caret offset if the caret is not at the |
| 2285 // end of the line | |
| 2286 if (event.end < lineOffset + line.length) { | |
| 2287 event.end++; | |
| 2288 } | |
| 2289 event.text = [key]; | |
| 2290 } else { | |
| 2291 event.text = [key]; | |
| 2292 } | |
| 2293 if (event.text !is null) { | |
| 213 | 2294 if (textLimit > 0 && content.getCharCount() - (event.end - event.start) >= textLimit) { |
| 2295 return; | |
| 2296 } | |
| 155 | 2297 sendKeyEvent(event); |
| 2298 } | |
| 2299 } | |
| 2300 /** | |
| 2301 * Moves the caret after the last character of the widget content. | |
| 2302 */ | |
| 2303 void doContentEnd() { | |
| 2304 // place caret at end of first line if receiver is in single | |
| 2305 // line mode. fixes 4820. | |
| 2306 if (isSingleLine()) { | |
| 2307 doLineEnd(); | |
| 2308 } else { | |
| 2309 int length = content.getCharCount(); | |
| 2310 if (caretOffset < length) { | |
| 2311 caretOffset = length; | |
| 2312 showCaret(); | |
| 2313 } | |
| 2314 } | |
| 2315 } | |
| 2316 /** | |
| 2317 * Moves the caret in front of the first character of the widget content. | |
| 2318 */ | |
| 2319 void doContentStart() { | |
| 2320 if (caretOffset > 0) { | |
| 2321 caretOffset = 0; | |
| 2322 showCaret(); | |
| 2323 } | |
| 2324 } | |
| 2325 /** | |
| 2326 * Moves the caret to the start of the selection if a selection exists. | |
| 2327 * Otherwise, if no selection exists move the cursor according to the | |
| 2328 * cursor selection rules. | |
| 2329 * | |
| 2330 * @see #doSelectionCursorPrevious | |
| 2331 */ | |
| 2332 void doCursorPrevious() { | |
| 2333 if (selection.y - selection.x > 0) { | |
| 2334 caretOffset = selection.x; | |
| 2335 caretAlignment = OFFSET_LEADING; | |
| 2336 showCaret(); | |
| 2337 } else { | |
| 2338 doSelectionCursorPrevious(); | |
| 2339 } | |
| 2340 } | |
| 2341 /** | |
| 2342 * Moves the caret to the end of the selection if a selection exists. | |
| 2343 * Otherwise, if no selection exists move the cursor according to the | |
| 2344 * cursor selection rules. | |
| 2345 * | |
| 2346 * @see #doSelectionCursorNext | |
| 2347 */ | |
| 2348 void doCursorNext() { | |
| 2349 if (selection.y - selection.x > 0) { | |
| 2350 caretOffset = selection.y; | |
| 2351 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 2352 showCaret(); | |
| 2353 } else { | |
| 2354 doSelectionCursorNext(); | |
| 2355 } | |
| 2356 } | |
| 2357 /** | |
| 2358 * Deletes the next character. Delete the selected text if any. | |
| 2359 */ | |
| 2360 void doDelete() { | |
| 2361 Event event = new Event(); | |
| 2362 event.text = ""; | |
| 2363 if (selection.x !is selection.y) { | |
| 2364 event.start = selection.x; | |
| 2365 event.end = selection.y; | |
| 2366 sendKeyEvent(event); | |
| 2367 } else if (caretOffset < content.getCharCount()) { | |
| 2368 int line = content.getLineAtOffset(caretOffset); | |
| 2369 int lineOffset = content.getOffsetAtLine(line); | |
| 2370 int lineLength = content.getLine(line).length; | |
| 2371 if (caretOffset is lineOffset + lineLength) { | |
| 2372 event.start = caretOffset; | |
| 2373 event.end = content.getOffsetAtLine(line + 1); | |
| 2374 } else { | |
| 2375 event.start = caretOffset; | |
| 2376 event.end = getClusterNext(caretOffset, line); | |
| 2377 } | |
| 2378 sendKeyEvent(event); | |
| 2379 } | |
| 2380 } | |
| 2381 /** | |
| 2382 * Deletes the next word. | |
| 2383 */ | |
| 2384 void doDeleteWordNext() { | |
| 2385 if (selection.x !is selection.y) { | |
| 2386 // if a selection exists, treat the as if | |
| 2387 // only the delete key was pressed | |
| 2388 doDelete(); | |
| 2389 } else { | |
| 2390 Event event = new Event(); | |
| 2391 event.text = ""; | |
| 2392 event.start = caretOffset; | |
| 2393 event.end = getWordNext(caretOffset, DWT.MOVEMENT_WORD); | |
| 2394 sendKeyEvent(event); | |
| 2395 } | |
| 2396 } | |
| 2397 /** | |
| 2398 * Deletes the previous word. | |
| 2399 */ | |
| 2400 void doDeleteWordPrevious() { | |
| 2401 if (selection.x !is selection.y) { | |
| 2402 // if a selection exists, treat as if | |
| 2403 // only the backspace key was pressed | |
| 2404 doBackspace(); | |
| 2405 } else { | |
| 2406 Event event = new Event(); | |
| 2407 event.text = ""; | |
| 2408 event.start = getWordPrevious(caretOffset, DWT.MOVEMENT_WORD); | |
| 2409 event.end = caretOffset; | |
| 2410 sendKeyEvent(event); | |
| 2411 } | |
| 2412 } | |
| 2413 /** | |
| 2414 * Moves the caret one line down and to the same character offset relative | |
| 2415 * to the beginning of the line. Move the caret to the end of the new line | |
| 2416 * if the new line is shorter than the character offset. | |
| 2417 */ | |
| 2418 void doLineDown(bool select) { | |
| 2419 int caretLine = getCaretLine(); | |
| 2420 int lineCount = content.getLineCount(); | |
| 2421 int y = 0; | |
| 2422 bool lastLine = false; | |
| 2423 if (wordWrap) { | |
| 2424 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2425 int offsetInLine = caretOffset - lineOffset; | |
| 2426 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2427 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2428 int layoutLineCount = layout.getLineCount(); | |
| 2429 if (lineIndex is layoutLineCount - 1) { | |
| 2430 lastLine = caretLine is lineCount - 1; | |
| 2431 caretLine++; | |
| 2432 } else { | |
| 2433 y = layout.getLineBounds(lineIndex + 1).y; | |
| 2434 } | |
| 2435 renderer.disposeTextLayout(layout); | |
| 2436 } else { | |
| 2437 lastLine = caretLine is lineCount - 1; | |
| 2438 caretLine++; | |
| 2439 } | |
| 2440 if (lastLine) { | |
| 2441 if (select) caretOffset = content.getCharCount(); | |
| 2442 } else { | |
| 2443 caretOffset = getOffsetAtPoint(columnX, y, caretLine); | |
| 2444 } | |
| 2445 int oldColumnX = columnX; | |
| 2446 int oldHScrollOffset = horizontalScrollOffset; | |
| 2447 if (select) { | |
| 2448 setMouseWordSelectionAnchor(); | |
| 2449 // select first and then scroll to reduce flash when key | |
| 2450 // repeat scrolls lots of lines | |
| 2451 doSelection(ST.COLUMN_NEXT); | |
| 2452 } | |
| 2453 showCaret(); | |
| 2454 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2455 columnX = oldColumnX + hScrollChange; | |
| 2456 } | |
| 2457 /** | |
| 2458 * Moves the caret to the end of the line. | |
| 2459 */ | |
| 2460 void doLineEnd() { | |
| 2461 int caretLine = getCaretLine(); | |
| 2462 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2463 int lineEndOffset; | |
| 2464 if (wordWrap) { | |
| 2465 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2466 int offsetInLine = caretOffset - lineOffset; | |
| 2467 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2468 int[] offsets = layout.getLineOffsets(); | |
| 2469 lineEndOffset = lineOffset + offsets[lineIndex + 1]; | |
| 2470 renderer.disposeTextLayout(layout); | |
| 2471 } else { | |
| 2472 int lineLength = content.getLine(caretLine).length; | |
| 2473 lineEndOffset = lineOffset + lineLength; | |
| 2474 } | |
| 2475 if (caretOffset < lineEndOffset) { | |
| 2476 caretOffset = lineEndOffset; | |
| 2477 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 2478 showCaret(); | |
| 2479 } | |
| 2480 } | |
| 2481 /** | |
| 2482 * Moves the caret to the beginning of the line. | |
| 2483 */ | |
| 2484 void doLineStart() { | |
| 2485 int caretLine = getCaretLine(); | |
| 2486 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2487 if (wordWrap) { | |
| 2488 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2489 int offsetInLine = caretOffset - lineOffset; | |
| 2490 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2491 int[] offsets = layout.getLineOffsets(); | |
| 2492 lineOffset += offsets[lineIndex]; | |
| 2493 renderer.disposeTextLayout(layout); | |
| 2494 } | |
| 2495 if (caretOffset > lineOffset) { | |
| 2496 caretOffset = lineOffset; | |
| 2497 caretAlignment = OFFSET_LEADING; | |
| 2498 showCaret(); | |
| 2499 } | |
| 2500 } | |
| 2501 /** | |
| 2502 * Moves the caret one line up and to the same character offset relative | |
| 2503 * to the beginning of the line. Move the caret to the end of the new line | |
| 2504 * if the new line is shorter than the character offset. | |
| 2505 */ | |
| 2506 void doLineUp(bool select) { | |
| 2507 int caretLine = getCaretLine(), y = 0; | |
| 2508 bool firstLine = false; | |
| 2509 if (wordWrap) { | |
| 2510 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2511 int offsetInLine = caretOffset - lineOffset; | |
| 2512 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2513 int lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2514 if (lineIndex is 0) { | |
| 2515 firstLine = caretLine is 0; | |
| 2516 if (!firstLine) { | |
| 2517 caretLine--; | |
| 2518 y = renderer.getLineHeight(caretLine) - 1; | |
| 2519 } | |
| 2520 } else { | |
| 2521 y = layout.getLineBounds(lineIndex - 1).y; | |
| 2522 } | |
| 2523 renderer.disposeTextLayout(layout); | |
| 2524 } else { | |
| 2525 firstLine = caretLine is 0; | |
| 2526 caretLine--; | |
| 2527 } | |
| 2528 if (firstLine) { | |
| 2529 if (select) caretOffset = 0; | |
| 2530 } else { | |
| 2531 caretOffset = getOffsetAtPoint(columnX, y, caretLine); | |
| 2532 } | |
| 2533 int oldColumnX = columnX; | |
| 2534 int oldHScrollOffset = horizontalScrollOffset; | |
| 2535 if (select) setMouseWordSelectionAnchor(); | |
| 2536 showCaret(); | |
| 2537 if (select) doSelection(ST.COLUMN_PREVIOUS); | |
| 2538 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2539 columnX = oldColumnX + hScrollChange; | |
| 2540 } | |
| 2541 /** | |
| 2542 * Moves the caret to the specified location. | |
| 2543 * | |
| 2544 * @param x x location of the new caret position | |
| 2545 * @param y y location of the new caret position | |
| 2546 * @param select the location change is a selection operation. | |
| 2547 * include the line delimiter in the selection | |
| 2548 */ | |
| 2549 void doMouseLocationChange(int x, int y, bool select) { | |
| 2550 int line = getLineIndex(y); | |
| 2551 | |
| 2552 updateCaretDirection = true; | |
| 2553 // allow caret to be placed below first line only if receiver is | |
| 2554 // not in single line mode. fixes 4820. | |
| 2555 if (line < 0 || (isSingleLine() && line > 0)) { | |
| 2556 return; | |
| 2557 } | |
| 2558 int oldCaretAlignment = caretAlignment; | |
| 2559 int newCaretOffset = getOffsetAtPoint(x, y); | |
| 2560 | |
| 213 | 2561 if (doubleClickEnabled && clickCount > 1) { |
| 155 | 2562 newCaretOffset = doMouseWordSelect(x, newCaretOffset, line); |
| 2563 } | |
| 2564 | |
| 2565 int newCaretLine = content.getLineAtOffset(newCaretOffset); | |
| 2566 | |
| 2567 // Is the mouse within the left client area border or on | |
| 2568 // a different line? If not the autoscroll selection | |
| 2569 // could be incorrectly reset. Fixes 1GKM3XS | |
| 2570 if (0 <= y && y < clientAreaHeight && | |
| 2571 (0 <= x && x < clientAreaWidth || wordWrap || | |
| 2572 newCaretLine !is content.getLineAtOffset(caretOffset))) { | |
| 2573 if (newCaretOffset !is caretOffset || caretAlignment !is oldCaretAlignment) { | |
| 2574 caretOffset = newCaretOffset; | |
| 2575 if (select) doMouseSelection(); | |
| 2576 showCaret(); | |
| 2577 } | |
| 2578 } | |
| 2579 if (!select) { | |
| 2580 caretOffset = newCaretOffset; | |
| 2581 clearSelection(true); | |
| 2582 } | |
| 2583 } | |
| 2584 /** | |
| 2585 * Updates the selection based on the caret position | |
| 2586 */ | |
| 2587 void doMouseSelection() { | |
| 2588 if (caretOffset <= selection.x || | |
| 2589 (caretOffset > selection.x && | |
| 2590 caretOffset < selection.y && selectionAnchor is selection.x)) { | |
| 2591 doSelection(ST.COLUMN_PREVIOUS); | |
| 2592 } else { | |
| 2593 doSelection(ST.COLUMN_NEXT); | |
| 2594 } | |
| 2595 } | |
| 2596 /** | |
| 2597 * Returns the offset of the word at the specified offset. | |
| 2598 * If the current selection : from high index to low index | |
| 2599 * (i.e., right to left, or caret is at left border of selection on | |
| 2600 * non-bidi platforms) the start offset of the word preceding the | |
| 2601 * selection is returned. If the current selection : from | |
| 2602 * low index to high index the end offset of the word following | |
| 2603 * the selection is returned. | |
| 2604 * | |
| 2605 * @param x mouse x location | |
| 2606 * @param newCaretOffset caret offset of the mouse cursor location | |
| 2607 * @param line line index of the mouse cursor location | |
| 2608 */ | |
| 2609 int doMouseWordSelect(int x, int newCaretOffset, int line) { | |
| 2610 // flip selection anchor based on word selection direction from | |
| 2611 // base double click. Always do this here (and don't rely on doAutoScroll) | |
| 2612 // because auto scroll only does not cover all possible mouse selections | |
| 2613 // (e.g., mouse x < 0 && mouse y > caret line y) | |
| 2614 if (newCaretOffset < selectionAnchor && selectionAnchor is selection.x) { | |
| 2615 selectionAnchor = doubleClickSelection.y; | |
| 2616 } else if (newCaretOffset > selectionAnchor && selectionAnchor is selection.y) { | |
| 2617 selectionAnchor = doubleClickSelection.x; | |
| 2618 } | |
| 2619 if (0 <= x && x < clientAreaWidth) { | |
| 2620 bool wordSelect = (clickCount & 1) is 0; | |
| 2621 if (caretOffset is selection.x) { | |
| 2622 if (wordSelect) { | |
| 2623 newCaretOffset = getWordPrevious(newCaretOffset, DWT.MOVEMENT_WORD_START); | |
| 2624 } else { | |
| 2625 newCaretOffset = content.getOffsetAtLine(line); | |
| 2626 } | |
| 2627 } else { | |
| 2628 if (wordSelect) { | |
| 2629 newCaretOffset = getWordNext(newCaretOffset, DWT.MOVEMENT_WORD_END); | |
| 2630 } else { | |
| 2631 int lineEnd = content.getCharCount(); | |
| 2632 if (line + 1 < content.getLineCount()) { | |
| 2633 lineEnd = content.getOffsetAtLine(line + 1); | |
| 2634 } | |
| 2635 newCaretOffset = lineEnd; | |
| 2636 } | |
| 2637 } | |
| 2638 } | |
| 2639 return newCaretOffset; | |
| 2640 } | |
| 2641 /** | |
| 2642 * Scrolls one page down so that the last line (truncated or whole) | |
| 2643 * of the current page becomes the fully visible top line. | |
| 2644 * <p> | |
| 2645 * The caret is scrolled the same number of lines so that its location | |
| 2646 * relative to the top line remains the same. The exception is the end | |
| 2647 * of the text where a full page scroll is not possible. In this case | |
| 2648 * the caret is moved after the last character. | |
| 2649 * </p> | |
| 2650 * | |
| 2651 * @param select whether or not to select the page | |
| 2652 */ | |
| 2653 void doPageDown(bool select, int height) { | |
| 2654 if (isSingleLine()) return; | |
| 2655 int oldColumnX = columnX; | |
| 2656 int oldHScrollOffset = horizontalScrollOffset; | |
| 2657 if (isFixedLineHeight()) { | |
| 2658 int lineCount = content.getLineCount(); | |
| 2659 int caretLine = getCaretLine(); | |
| 2660 if (caretLine < lineCount - 1) { | |
| 2661 int lineHeight = renderer.getLineHeight(); | |
| 2662 int lines = (height is -1 ? clientAreaHeight : height) / lineHeight; | |
| 2663 int scrollLines = Math.min(lineCount - caretLine - 1, lines); | |
| 2664 // ensure that scrollLines never gets negative and at least one | |
| 2665 // line is scrolled. fixes bug 5602. | |
| 2666 scrollLines = Math.max(1, scrollLines); | |
| 2667 caretOffset = getOffsetAtPoint(columnX, getLinePixel(caretLine + scrollLines)); | |
| 2668 if (select) { | |
| 2669 doSelection(ST.COLUMN_NEXT); | |
| 2670 } | |
| 2671 // scroll one page down or to the bottom | |
| 2672 int verticalMaximum = lineCount * getVerticalIncrement(); | |
| 2673 int pageSize = clientAreaHeight; | |
| 2674 int verticalScrollOffset = getVerticalScrollOffset(); | |
| 2675 int scrollOffset = verticalScrollOffset + scrollLines * getVerticalIncrement(); | |
| 2676 if (scrollOffset + pageSize > verticalMaximum) { | |
| 2677 scrollOffset = verticalMaximum - pageSize; | |
| 2678 } | |
| 2679 if (scrollOffset > verticalScrollOffset) { | |
| 2680 scrollVertical(scrollOffset - verticalScrollOffset, true); | |
| 2681 } | |
| 2682 } | |
| 2683 } else { | |
| 2684 int lineCount = content.getLineCount(); | |
| 2685 int caretLine = getCaretLine(); | |
| 2686 int lineIndex, lineHeight; | |
| 2687 if (height is -1) { | |
| 2688 lineIndex = getPartialBottomIndex(); | |
| 2689 int topY = getLinePixel(lineIndex); | |
| 2690 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2691 height = topY; | |
| 2692 if (topY + lineHeight <= clientAreaHeight) { | |
| 2693 height += lineHeight; | |
| 2694 } else { | |
| 2695 if (wordWrap) { | |
| 2696 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2697 int y = clientAreaHeight - topY; | |
| 2698 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2699 Rectangle bounds = layout.getLineBounds(i); | |
| 2700 if (bounds.contains(bounds.x, y)) { | |
| 2701 height += bounds.y; | |
| 2702 break; | |
| 2703 } | |
| 2704 } | |
| 2705 renderer.disposeTextLayout(layout); | |
| 2706 } | |
| 2707 } | |
| 2708 } else { | |
| 2709 lineIndex = getLineIndex(height); | |
| 2710 int topLineY = getLinePixel(lineIndex); | |
| 2711 if (wordWrap) { | |
| 2712 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2713 int y = height - topLineY; | |
| 2714 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2715 Rectangle bounds = layout.getLineBounds(i); | |
| 2716 if (bounds.contains(bounds.x, y)) { | |
| 2717 height = topLineY + bounds.y + bounds.height; | |
| 2718 break; | |
| 2719 } | |
| 2720 } | |
| 2721 renderer.disposeTextLayout(layout); | |
| 2722 } else { | |
| 2723 height = topLineY + renderer.getLineHeight(lineIndex); | |
| 2724 } | |
| 2725 } | |
| 2726 int caretHeight = height; | |
| 2727 if (wordWrap) { | |
| 2728 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2729 int offsetInLine = caretOffset - content.getOffsetAtLine(caretLine); | |
| 2730 lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2731 caretHeight += layout.getLineBounds(lineIndex).y; | |
| 2732 renderer.disposeTextLayout(layout); | |
| 2733 } | |
| 2734 lineIndex = caretLine; | |
| 2735 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2736 while (caretHeight - lineHeight >= 0 && lineIndex < lineCount - 1) { | |
| 2737 caretHeight -= lineHeight; | |
| 2738 lineHeight = renderer.getLineHeight(++lineIndex); | |
| 2739 } | |
| 2740 caretOffset = getOffsetAtPoint(columnX, caretHeight, lineIndex); | |
| 2741 if (select) doSelection(ST.COLUMN_NEXT); | |
| 2742 height = getAvailableHeightBellow(height); | |
| 2743 scrollVertical(height, true); | |
| 2744 if (height is 0) setCaretLocation(); | |
| 2745 } | |
| 2746 showCaret(); | |
| 2747 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2748 columnX = oldColumnX + hScrollChange; | |
| 2749 } | |
| 2750 /** | |
| 2751 * Moves the cursor to the end of the last fully visible line. | |
| 2752 */ | |
| 2753 void doPageEnd() { | |
| 2754 // go to end of line if in single line mode. fixes 5673 | |
| 2755 if (isSingleLine()) { | |
| 2756 doLineEnd(); | |
| 2757 } else { | |
| 2758 int bottomOffset; | |
| 2759 if (wordWrap) { | |
| 2760 int lineIndex = getPartialBottomIndex(); | |
| 2761 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2762 int y = (clientAreaHeight - bottomMargin) - getLinePixel(lineIndex); | |
| 2763 int index = layout.getLineCount() - 1; | |
| 2764 while (index >= 0) { | |
| 2765 Rectangle bounds = layout.getLineBounds(index); | |
| 2766 if (y >= bounds.y + bounds.height) break; | |
| 2767 index--; | |
| 2768 } | |
| 2769 if (index is -1 && lineIndex > 0) { | |
| 2770 bottomOffset = content.getOffsetAtLine(lineIndex - 1) + content.getLine(lineIndex - 1).length; | |
| 2771 } else { | |
| 2772 bottomOffset = content.getOffsetAtLine(lineIndex) + Math.max(0, layout.getLineOffsets()[index + 1] - 1); | |
| 2773 } | |
| 2774 renderer.disposeTextLayout(layout); | |
| 2775 } else { | |
| 2776 int lineIndex = getBottomIndex(); | |
| 2777 bottomOffset = content.getOffsetAtLine(lineIndex) + content.getLine(lineIndex).length; | |
| 2778 } | |
| 2779 if (caretOffset < bottomOffset) { | |
| 2780 caretOffset = bottomOffset; | |
| 2781 caretAlignment = OFFSET_LEADING; | |
| 2782 showCaret(); | |
| 2783 } | |
| 2784 } | |
| 2785 } | |
| 2786 /** | |
| 2787 * Moves the cursor to the beginning of the first fully visible line. | |
| 2788 */ | |
| 2789 void doPageStart() { | |
| 2790 int topOffset; | |
| 2791 if (wordWrap) { | |
| 2792 int y, lineIndex; | |
| 2793 if (topIndexY > 0) { | |
| 2794 lineIndex = topIndex - 1; | |
| 2795 y = renderer.getLineHeight(lineIndex) - topIndexY; | |
| 2796 } else { | |
| 2797 lineIndex = topIndex; | |
| 2798 y = -topIndexY; | |
| 2799 } | |
| 2800 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2801 int index = 0; | |
| 2802 int lineCount = layout.getLineCount(); | |
| 2803 while (index < lineCount) { | |
| 2804 Rectangle bounds = layout.getLineBounds(index); | |
| 2805 if (y <= bounds.y) break; | |
| 2806 index++; | |
| 2807 } | |
| 2808 if (index is lineCount) { | |
| 2809 topOffset = content.getOffsetAtLine(lineIndex + 1); | |
| 2810 } else { | |
| 2811 topOffset = content.getOffsetAtLine(lineIndex) + layout.getLineOffsets()[index]; | |
| 2812 } | |
| 2813 renderer.disposeTextLayout(layout); | |
| 2814 } else { | |
| 2815 topOffset = content.getOffsetAtLine(topIndex); | |
| 2816 } | |
| 2817 if (caretOffset > topOffset) { | |
| 2818 caretOffset = topOffset; | |
| 2819 caretAlignment = OFFSET_LEADING; | |
| 2820 showCaret(); | |
| 2821 } | |
| 2822 } | |
| 2823 /** | |
| 2824 * Scrolls one page up so that the first line (truncated or whole) | |
| 2825 * of the current page becomes the fully visible last line. | |
| 2826 * The caret is scrolled the same number of lines so that its location | |
| 2827 * relative to the top line remains the same. The exception is the beginning | |
| 2828 * of the text where a full page scroll is not possible. In this case the | |
| 2829 * caret is moved in front of the first character. | |
| 2830 */ | |
| 2831 void doPageUp(bool select, int height) { | |
| 2832 if (isSingleLine()) return; | |
| 2833 int oldHScrollOffset = horizontalScrollOffset; | |
| 2834 int oldColumnX = columnX; | |
| 2835 if (isFixedLineHeight()) { | |
| 2836 int caretLine = getCaretLine(); | |
| 2837 if (caretLine > 0) { | |
| 2838 int lineHeight = renderer.getLineHeight(); | |
| 2839 int lines = (height is -1 ? clientAreaHeight : height) / lineHeight; | |
| 2840 int scrollLines = Math.max(1, Math.min(caretLine, lines)); | |
| 2841 caretLine -= scrollLines; | |
| 2842 caretOffset = getOffsetAtPoint(columnX, getLinePixel(caretLine)); | |
| 2843 if (select) { | |
| 2844 doSelection(ST.COLUMN_PREVIOUS); | |
| 2845 } | |
| 2846 int verticalScrollOffset = getVerticalScrollOffset(); | |
| 2847 int scrollOffset = Math.max(0, verticalScrollOffset - scrollLines * getVerticalIncrement()); | |
| 2848 if (scrollOffset < verticalScrollOffset) { | |
| 2849 scrollVertical(scrollOffset - verticalScrollOffset, true); | |
| 2850 } | |
| 2851 } | |
| 2852 } else { | |
| 2853 int caretLine = getCaretLine(); | |
| 2854 int lineHeight, lineIndex; | |
| 2855 if (height is -1) { | |
| 2856 if (topIndexY is 0) { | |
| 2857 height = clientAreaHeight; | |
| 2858 } else { | |
| 2859 int y; | |
| 2860 if (topIndex > 0) { | |
| 2861 lineIndex = topIndex - 1; | |
| 2862 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2863 height = clientAreaHeight - topIndexY; | |
| 2864 y = lineHeight - topIndexY; | |
| 2865 } else { | |
| 2866 lineIndex = topIndex; | |
| 2867 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2868 height = clientAreaHeight - (lineHeight + topIndexY); | |
| 2869 y = -topIndexY; | |
| 2870 } | |
| 2871 if (wordWrap) { | |
| 2872 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2873 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2874 Rectangle bounds = layout.getLineBounds(i); | |
| 2875 if (bounds.contains(bounds.x, y)) { | |
| 2876 height += lineHeight - (bounds.y + bounds.height); | |
| 2877 break; | |
| 2878 } | |
| 2879 } | |
| 2880 renderer.disposeTextLayout(layout); | |
| 2881 } | |
| 2882 } | |
| 2883 } else { | |
| 2884 lineIndex = getLineIndex(clientAreaHeight - height); | |
| 2885 int topLineY = getLinePixel(lineIndex); | |
| 2886 if (wordWrap) { | |
| 2887 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 2888 int y = topLineY; | |
| 2889 for (int i = 0; i < layout.getLineCount(); i++) { | |
| 2890 Rectangle bounds = layout.getLineBounds(i); | |
| 2891 if (bounds.contains(bounds.x, y)) { | |
| 2892 height = clientAreaHeight - (topLineY + bounds.y); | |
| 2893 break; | |
| 2894 } | |
| 2895 } | |
| 2896 renderer.disposeTextLayout(layout); | |
| 2897 } else { | |
| 2898 height = clientAreaHeight - topLineY; | |
| 2899 } | |
| 2900 } | |
| 2901 int caretHeight = height; | |
| 2902 if (wordWrap) { | |
| 2903 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2904 int offsetInLine = caretOffset - content.getOffsetAtLine(caretLine); | |
| 2905 lineIndex = getVisualLineIndex(layout, offsetInLine); | |
| 2906 caretHeight += layout.getBounds().height - layout.getLineBounds(lineIndex).y; | |
| 2907 renderer.disposeTextLayout(layout); | |
| 2908 } | |
| 2909 lineIndex = caretLine; | |
| 2910 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2911 while (caretHeight - lineHeight >= 0 && lineIndex > 0) { | |
| 2912 caretHeight -= lineHeight; | |
| 2913 lineHeight = renderer.getLineHeight(--lineIndex); | |
| 2914 } | |
| 2915 lineHeight = renderer.getLineHeight(lineIndex); | |
| 2916 caretOffset = getOffsetAtPoint(columnX, lineHeight - caretHeight, lineIndex); | |
| 2917 if (select) doSelection(ST.COLUMN_PREVIOUS); | |
| 2918 height = getAvailableHeightAbove(height); | |
| 2919 scrollVertical(-height, true); | |
| 2920 if (height is 0) setCaretLocation(); | |
| 2921 } | |
| 2922 showCaret(); | |
| 2923 int hScrollChange = oldHScrollOffset - horizontalScrollOffset; | |
| 2924 columnX = oldColumnX + hScrollChange; | |
| 2925 } | |
| 2926 /** | |
| 2927 * Updates the selection to extend to the current caret position. | |
| 2928 */ | |
| 2929 void doSelection(int direction) { | |
| 2930 int redrawStart = -1; | |
| 2931 int redrawEnd = -1; | |
| 2932 if (selectionAnchor is -1) { | |
| 2933 selectionAnchor = selection.x; | |
| 2934 } | |
| 2935 if (direction is ST.COLUMN_PREVIOUS) { | |
| 2936 if (caretOffset < selection.x) { | |
| 2937 // grow selection | |
| 2938 redrawEnd = selection.x; | |
| 2939 redrawStart = selection.x = caretOffset; | |
| 2940 // check if selection has reversed direction | |
| 2941 if (selection.y !is selectionAnchor) { | |
| 2942 redrawEnd = selection.y; | |
| 2943 selection.y = selectionAnchor; | |
| 2944 } | |
| 2945 // test whether selection actually changed. Fixes 1G71EO1 | |
| 2946 } else if (selectionAnchor is selection.x && caretOffset < selection.y) { | |
| 2947 // caret moved towards selection anchor (left side of selection). | |
| 2948 // shrink selection | |
| 2949 redrawEnd = selection.y; | |
| 2950 redrawStart = selection.y = caretOffset; | |
| 2951 } | |
| 2952 } else { | |
| 2953 if (caretOffset > selection.y) { | |
| 2954 // grow selection | |
| 2955 redrawStart = selection.y; | |
| 2956 redrawEnd = selection.y = caretOffset; | |
| 2957 // check if selection has reversed direction | |
| 2958 if (selection.x !is selectionAnchor) { | |
| 2959 redrawStart = selection.x; | |
| 2960 selection.x = selectionAnchor; | |
| 2961 } | |
| 2962 // test whether selection actually changed. Fixes 1G71EO1 | |
| 2963 } else if (selectionAnchor is selection.y && caretOffset > selection.x) { | |
| 2964 // caret moved towards selection anchor (right side of selection). | |
| 2965 // shrink selection | |
| 2966 redrawStart = selection.x; | |
| 2967 redrawEnd = selection.x = caretOffset; | |
| 2968 } | |
| 2969 } | |
| 2970 if (redrawStart !is -1 && redrawEnd !is -1) { | |
| 2971 internalRedrawRange(redrawStart, redrawEnd - redrawStart); | |
| 2972 sendSelectionEvent(); | |
| 2973 } | |
| 2974 } | |
| 2975 /** | |
| 2976 * Moves the caret to the next character or to the beginning of the | |
| 2977 * next line if the cursor is at the end of a line. | |
| 2978 */ | |
| 2979 void doSelectionCursorNext() { | |
| 2980 int caretLine = getCaretLine(); | |
| 2981 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 2982 int offsetInLine = caretOffset - lineOffset; | |
| 2983 if (offsetInLine < content.getLine(caretLine).length) { | |
| 2984 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 2985 offsetInLine = layout.getNextOffset(offsetInLine, DWT.MOVEMENT_CLUSTER); | |
| 2986 int lineStart = layout.getLineOffsets()[layout.getLineIndex(offsetInLine)]; | |
| 2987 renderer.disposeTextLayout(layout); | |
| 2988 caretOffset = offsetInLine + lineOffset; | |
| 2989 caretAlignment = offsetInLine is lineStart ? OFFSET_LEADING : PREVIOUS_OFFSET_TRAILING; | |
| 2990 showCaret(); | |
| 2991 } else if (caretLine < content.getLineCount() - 1 && !isSingleLine()) { | |
| 2992 caretLine++; | |
| 2993 caretOffset = content.getOffsetAtLine(caretLine); | |
| 2994 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 2995 showCaret(); | |
| 2996 } | |
| 2997 } | |
| 2998 /** | |
| 2999 * Moves the caret to the previous character or to the end of the previous | |
| 3000 * line if the cursor is at the beginning of a line. | |
| 3001 */ | |
| 3002 void doSelectionCursorPrevious() { | |
| 3003 int caretLine = getCaretLine(); | |
| 3004 int lineOffset = content.getOffsetAtLine(caretLine); | |
| 3005 int offsetInLine = caretOffset - lineOffset; | |
| 3006 caretAlignment = OFFSET_LEADING; | |
| 3007 if (offsetInLine > 0) { | |
| 3008 caretOffset = getClusterPrevious(caretOffset, caretLine); | |
| 3009 showCaret(); | |
| 3010 } else if (caretLine > 0) { | |
| 3011 caretLine--; | |
| 3012 lineOffset = content.getOffsetAtLine(caretLine); | |
| 3013 caretOffset = lineOffset + content.getLine(caretLine).length; | |
| 3014 showCaret(); | |
| 3015 } | |
| 3016 } | |
| 3017 /** | |
| 3018 * Moves the caret one line down and to the same character offset relative | |
| 3019 * to the beginning of the line. Moves the caret to the end of the new line | |
| 3020 * if the new line is shorter than the character offset. | |
| 3021 * Moves the caret to the end of the text if the caret already is on the | |
| 3022 * last line. | |
| 3023 * Adjusts the selection according to the caret change. This can either add | |
| 3024 * to or subtract from the old selection, depending on the previous selection | |
| 3025 * direction. | |
| 3026 */ | |
| 3027 void doSelectionLineDown() { | |
| 3028 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3029 doLineDown(true); | |
| 3030 columnX = oldColumnX; | |
| 3031 } | |
| 3032 /** | |
| 3033 * Moves the caret one line up and to the same character offset relative | |
| 3034 * to the beginning of the line. Moves the caret to the end of the new line | |
| 3035 * if the new line is shorter than the character offset. | |
| 3036 * Moves the caret to the beginning of the document if it is already on the | |
| 3037 * first line. | |
| 3038 * Adjusts the selection according to the caret change. This can either add | |
| 3039 * to or subtract from the old selection, depending on the previous selection | |
| 3040 * direction. | |
| 3041 */ | |
| 3042 void doSelectionLineUp() { | |
| 3043 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3044 doLineUp(true); | |
| 3045 columnX = oldColumnX; | |
| 3046 } | |
| 3047 /** | |
| 3048 * Scrolls one page down so that the last line (truncated or whole) | |
| 3049 * of the current page becomes the fully visible top line. | |
| 3050 * <p> | |
| 3051 * The caret is scrolled the same number of lines so that its location | |
| 3052 * relative to the top line remains the same. The exception is the end | |
| 3053 * of the text where a full page scroll is not possible. In this case | |
| 3054 * the caret is moved after the last character. | |
| 3055 * <p></p> | |
| 3056 * Adjusts the selection according to the caret change. This can either add | |
| 3057 * to or subtract from the old selection, depending on the previous selection | |
| 3058 * direction. | |
| 3059 * </p> | |
| 3060 */ | |
| 3061 void doSelectionPageDown(int pixels) { | |
| 3062 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3063 doPageDown(true, pixels); | |
| 3064 columnX = oldColumnX; | |
| 3065 } | |
| 3066 /** | |
| 3067 * Scrolls one page up so that the first line (truncated or whole) | |
| 3068 * of the current page becomes the fully visible last line. | |
| 3069 * <p> | |
| 3070 * The caret is scrolled the same number of lines so that its location | |
| 3071 * relative to the top line remains the same. The exception is the beginning | |
| 3072 * of the text where a full page scroll is not possible. In this case the | |
| 3073 * caret is moved in front of the first character. | |
| 3074 * </p><p> | |
| 3075 * Adjusts the selection according to the caret change. This can either add | |
| 3076 * to or subtract from the old selection, depending on the previous selection | |
| 3077 * direction. | |
| 3078 * </p> | |
| 3079 */ | |
| 3080 void doSelectionPageUp(int pixels) { | |
| 3081 int oldColumnX = columnX = getPointAtOffset(caretOffset).x; | |
| 3082 doPageUp(true, pixels); | |
| 3083 columnX = oldColumnX; | |
| 3084 } | |
| 3085 /** | |
| 3086 * Moves the caret to the end of the next word . | |
| 3087 */ | |
| 3088 void doSelectionWordNext() { | |
| 3089 int newCaretOffset = getWordNext(caretOffset, DWT.MOVEMENT_WORD); | |
| 3090 // Force symmetrical movement for word next and previous. Fixes 14536 | |
| 3091 caretAlignment = OFFSET_LEADING; | |
| 3092 // don't change caret position if in single line mode and the cursor | |
| 3093 // would be on a different line. fixes 5673 | |
| 3094 if (!isSingleLine() || | |
| 3095 content.getLineAtOffset(caretOffset) is content.getLineAtOffset(newCaretOffset)) { | |
| 3096 caretOffset = newCaretOffset; | |
| 3097 showCaret(); | |
| 3098 } | |
| 3099 } | |
| 3100 /** | |
| 3101 * Moves the caret to the start of the previous word. | |
| 3102 */ | |
| 3103 void doSelectionWordPrevious() { | |
| 3104 caretAlignment = OFFSET_LEADING; | |
| 3105 caretOffset = getWordPrevious(caretOffset, DWT.MOVEMENT_WORD); | |
| 3106 int caretLine = content.getLineAtOffset(caretOffset); | |
| 3107 // word previous always comes from bottom line. when | |
| 3108 // wrapping lines, stay on bottom line when on line boundary | |
| 3109 if (wordWrap && caretLine < content.getLineCount() - 1 && | |
| 3110 caretOffset is content.getOffsetAtLine(caretLine + 1)) { | |
| 3111 caretLine++; | |
| 3112 } | |
| 3113 showCaret(); | |
| 3114 } | |
| 3115 /** | |
| 3116 * Moves the caret one character to the left. Do not go to the previous line. | |
| 3117 * When in a bidi locale and at a R2L character the caret is moved to the | |
| 3118 * beginning of the R2L segment (visually right) and then one character to the | |
| 3119 * left (visually left because it's now in a L2R segment). | |
| 3120 */ | |
| 3121 void doVisualPrevious() { | |
| 3122 caretOffset = getClusterPrevious(caretOffset, getCaretLine()); | |
| 3123 showCaret(); | |
| 3124 } | |
| 3125 /** | |
| 3126 * Moves the caret one character to the right. Do not go to the next line. | |
| 3127 * When in a bidi locale and at a R2L character the caret is moved to the | |
| 3128 * end of the R2L segment (visually left) and then one character to the | |
| 3129 * right (visually right because it's now in a L2R segment). | |
| 3130 */ | |
| 3131 void doVisualNext() { | |
| 3132 caretOffset = getClusterNext(caretOffset, getCaretLine()); | |
| 3133 showCaret(); | |
| 3134 } | |
| 3135 /** | |
| 3136 * Moves the caret to the end of the next word. | |
| 3137 * If a selection exists, move the caret to the end of the selection | |
| 3138 * and remove the selection. | |
| 3139 */ | |
| 3140 void doWordNext() { | |
| 3141 if (selection.y - selection.x > 0) { | |
| 3142 caretOffset = selection.y; | |
| 3143 showCaret(); | |
| 3144 } else { | |
| 3145 doSelectionWordNext(); | |
| 3146 } | |
| 3147 } | |
| 3148 /** | |
| 3149 * Moves the caret to the start of the previous word. | |
| 3150 * If a selection exists, move the caret to the start of the selection | |
| 3151 * and remove the selection. | |
| 3152 */ | |
| 3153 void doWordPrevious() { | |
| 3154 if (selection.y - selection.x > 0) { | |
| 3155 caretOffset = selection.x; | |
| 3156 showCaret(); | |
| 3157 } else { | |
| 3158 doSelectionWordPrevious(); | |
| 3159 } | |
| 3160 } | |
| 3161 /** | |
| 3162 * Ends the autoscroll process. | |
| 3163 */ | |
| 3164 void endAutoScroll() { | |
| 3165 autoScrollDirection = DWT.NULL; | |
| 3166 } | |
| 3167 public override Color getBackground() { | |
| 3168 checkWidget(); | |
| 3169 if (background is null) { | |
| 3170 return getDisplay().getSystemColor(DWT.COLOR_LIST_BACKGROUND); | |
| 3171 } | |
| 3172 return background; | |
| 3173 } | |
| 3174 /** | |
| 3175 * Returns the baseline, in pixels. | |
| 3176 * | |
| 3177 * Note: this API should not be used if a StyleRange attribute causes lines to | |
| 3178 * have different heights (i.e. different fonts, rise, etc). | |
| 3179 * | |
| 3180 * @return baseline the baseline | |
| 3181 * @exception DWTException <ul> | |
| 3182 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3183 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3184 * </ul> | |
| 3185 * @since 3.0 | |
| 3186 * | |
| 3187 * @see #getBaseline(int) | |
| 3188 */ | |
| 3189 public int getBaseline() { | |
| 3190 checkWidget(); | |
| 3191 return renderer.getBaseline(); | |
| 3192 } | |
| 3193 /** | |
| 3194 * Returns the baseline at the given offset, in pixels. | |
| 3195 * | |
| 3196 * @param offset the offset | |
| 3197 * | |
| 3198 * @return baseline the baseline | |
| 3199 * | |
| 3200 * @exception DWTException <ul> | |
| 3201 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3202 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3203 * </ul> | |
| 3204 * @exception IllegalArgumentException <ul> | |
| 3205 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3206 * </ul> | |
| 3207 * | |
| 3208 * @since 3.2 | |
| 3209 */ | |
| 3210 public int getBaseline(int offset) { | |
| 3211 checkWidget(); | |
| 3212 if (!(0 <= offset && offset <= content.getCharCount())) { | |
| 3213 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3214 } | |
| 3215 if (isFixedLineHeight()) { | |
| 3216 return renderer.getBaseline(); | |
| 3217 } | |
| 3218 int lineIndex = content.getLineAtOffset(offset); | |
| 3219 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3220 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3221 int lineInParagraph = layout.getLineIndex(Math.min(offset - lineOffset, layout.getText().length)); | |
| 3222 FontMetrics metrics = layout.getLineMetrics(lineInParagraph); | |
| 3223 renderer.disposeTextLayout(layout); | |
| 3224 return metrics.getAscent() + metrics.getLeading(); | |
| 3225 } | |
| 3226 /** | |
| 3227 * Gets the BIDI coloring mode. When true the BIDI text display | |
| 3228 * algorithm is applied to segments of text that are the same | |
| 3229 * color. | |
| 3230 * | |
| 3231 * @return the current coloring mode | |
| 3232 * @exception DWTException <ul> | |
| 3233 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3234 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3235 * </ul> | |
| 3236 * | |
| 3237 * @deprecated use BidiSegmentListener instead. | |
| 3238 */ | |
| 3239 public bool getBidiColoring() { | |
| 3240 checkWidget(); | |
| 3241 return bidiColoring; | |
| 3242 } | |
| 3243 /** | |
| 3244 * Returns the index of the last fully visible line. | |
| 3245 * | |
| 3246 * @return index of the last fully visible line. | |
| 3247 */ | |
| 3248 int getBottomIndex() { | |
| 3249 int bottomIndex; | |
| 3250 if (isFixedLineHeight()) { | |
| 3251 int lineCount = 1; | |
| 3252 int lineHeight = renderer.getLineHeight(); | |
| 3253 if (lineHeight !is 0) { | |
| 3254 // calculate the number of lines that are fully visible | |
| 3255 int partialTopLineHeight = topIndex * lineHeight - getVerticalScrollOffset(); | |
| 3256 lineCount = (clientAreaHeight - partialTopLineHeight) / lineHeight; | |
| 3257 } | |
| 3258 bottomIndex = Math.min(content.getLineCount() - 1, topIndex + Math.max(0, lineCount - 1)); | |
| 3259 } else { | |
| 3260 int clientAreaHeight = this.clientAreaHeight - bottomMargin; | |
| 3261 bottomIndex = getLineIndex(clientAreaHeight); | |
| 3262 if (bottomIndex > 0) { | |
| 3263 int linePixel = getLinePixel(bottomIndex); | |
| 3264 int lineHeight = renderer.getLineHeight(bottomIndex); | |
| 3265 if (linePixel + lineHeight > clientAreaHeight) { | |
| 3266 if (getLinePixel(bottomIndex - 1) >= topMargin) { | |
| 3267 bottomIndex--; | |
| 3268 } | |
| 3269 } | |
| 3270 } | |
| 3271 } | |
| 3272 return bottomIndex; | |
| 3273 } | |
| 3274 Rectangle getBoundsAtOffset(int offset) { | |
| 3275 int lineIndex = content.getLineAtOffset(offset); | |
| 213 | 3276 int lineOffset = content.getOffsetAtLine(lineIndex); |
|
212
ab60f3309436
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Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
3277 String line = content.getLine(lineIndex); |
| 155 | 3278 Rectangle bounds; |
| 3279 if (line.length !is 0) { | |
| 213 | 3280 int offsetInLine = offset - lineOffset; |
| 155 | 3281 TextLayout layout = renderer.getTextLayout(lineIndex); |
| 3282 bounds = layout.getBounds(offsetInLine, offsetInLine); | |
| 3283 renderer.disposeTextLayout(layout); | |
| 3284 } else { | |
| 3285 bounds = new Rectangle (0, 0, 0, renderer.getLineHeight()); | |
| 3286 } | |
| 213 | 3287 if (offset is caretOffset) { |
| 3288 int lineEnd = lineOffset + line.length; | |
| 3289 if (offset is lineEnd && caretAlignment is PREVIOUS_OFFSET_TRAILING) { | |
| 3290 bounds.width += getCaretWidth(); | |
| 3291 } | |
| 3292 } | |
| 155 | 3293 bounds.x += leftMargin - horizontalScrollOffset; |
| 3294 bounds.y += getLinePixel(lineIndex); | |
| 3295 return bounds; | |
| 3296 } | |
| 3297 /** | |
| 3298 * Returns the caret position relative to the start of the text. | |
| 3299 * | |
| 3300 * @return the caret position relative to the start of the text. | |
| 3301 * @exception DWTException <ul> | |
| 3302 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3303 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3304 * </ul> | |
| 3305 */ | |
| 3306 public int getCaretOffset() { | |
| 3307 checkWidget(); | |
| 3308 return caretOffset; | |
| 3309 } | |
| 3310 /** | |
| 3311 * Returns the caret width. | |
| 3312 * | |
| 3313 * @return the caret width, 0 if caret is null. | |
| 3314 */ | |
| 3315 int getCaretWidth() { | |
| 3316 Caret caret = getCaret(); | |
| 3317 if (caret is null) return 0; | |
| 3318 return caret.getSize().x; | |
| 3319 } | |
| 3320 Object getClipboardContent(int clipboardType) { | |
| 3321 TextTransfer plainTextTransfer = TextTransfer.getInstance(); | |
| 3322 return clipboard.getContents(plainTextTransfer, clipboardType); | |
| 3323 } | |
| 3324 int getClusterNext(int offset, int lineIndex) { | |
| 3325 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3326 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3327 offset -= lineOffset; | |
| 3328 offset = layout.getNextOffset(offset, DWT.MOVEMENT_CLUSTER); | |
| 3329 offset += lineOffset; | |
| 3330 renderer.disposeTextLayout(layout); | |
| 3331 return offset; | |
| 3332 } | |
| 3333 int getClusterPrevious(int offset, int lineIndex) { | |
| 3334 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3335 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3336 offset -= lineOffset; | |
| 3337 offset = layout.getPreviousOffset(offset, DWT.MOVEMENT_CLUSTER); | |
| 3338 offset += lineOffset; | |
| 3339 renderer.disposeTextLayout(layout); | |
| 3340 return offset; | |
| 3341 } | |
| 3342 /** | |
| 213 | 3343 * Returns the content implementation that is used for text storage. |
| 3344 * | |
| 3345 * @return content the user defined content implementation that is used for | |
| 3346 * text storage or the default content implementation if no user defined | |
| 3347 * content implementation has been set. | |
| 155 | 3348 * @exception DWTException <ul> |
| 3349 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3350 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3351 * </ul> | |
| 3352 */ | |
| 3353 public StyledTextContent getContent() { | |
| 3354 checkWidget(); | |
| 3355 return content; | |
| 3356 } | |
| 3357 public override bool getDragDetect () { | |
| 3358 checkWidget (); | |
| 3359 return dragDetect_; | |
| 3360 } | |
| 3361 /** | |
| 3362 * Returns whether the widget : double click mouse behavior. | |
| 3363 * | |
| 3364 * @return true if double clicking a word selects the word, false if double clicks | |
| 3365 * have the same effect as regular mouse clicks | |
| 3366 * @exception DWTException <ul> | |
| 3367 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3368 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3369 * </ul> | |
| 3370 */ | |
| 3371 public bool getDoubleClickEnabled() { | |
| 3372 checkWidget(); | |
| 3373 return doubleClickEnabled; | |
| 3374 } | |
| 3375 /** | |
| 3376 * Returns whether the widget content can be edited. | |
| 3377 * | |
| 3378 * @return true if content can be edited, false otherwise | |
| 3379 * @exception DWTException <ul> | |
| 3380 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3381 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3382 * </ul> | |
| 3383 */ | |
| 3384 public bool getEditable() { | |
| 3385 checkWidget(); | |
| 3386 return editable; | |
| 3387 } | |
| 3388 public override Color getForeground() { | |
| 3389 checkWidget(); | |
| 3390 if (foreground is null) { | |
| 3391 return getDisplay().getSystemColor(DWT.COLOR_LIST_FOREGROUND); | |
| 3392 } | |
| 3393 return foreground; | |
| 3394 } | |
| 3395 /** | |
| 3396 * Returns the horizontal scroll increment. | |
| 3397 * | |
| 3398 * @return horizontal scroll increment. | |
| 3399 */ | |
| 3400 int getHorizontalIncrement() { | |
| 3401 return renderer.averageCharWidth; | |
| 3402 } | |
| 3403 /** | |
| 3404 * Returns the horizontal scroll offset relative to the start of the line. | |
| 3405 * | |
| 3406 * @return horizontal scroll offset relative to the start of the line, | |
| 3407 * measured in character increments starting at 0, if > 0 the content is scrolled | |
| 3408 * @exception DWTException <ul> | |
| 3409 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3410 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3411 * </ul> | |
| 3412 */ | |
| 3413 public int getHorizontalIndex() { | |
| 3414 checkWidget(); | |
| 3415 return horizontalScrollOffset / getHorizontalIncrement(); | |
| 3416 } | |
| 3417 /** | |
| 3418 * Returns the horizontal scroll offset relative to the start of the line. | |
| 3419 * | |
| 3420 * @return the horizontal scroll offset relative to the start of the line, | |
| 3421 * measured in pixel starting at 0, if > 0 the content is scrolled. | |
| 3422 * @exception DWTException <ul> | |
| 3423 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3424 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3425 * </ul> | |
| 3426 */ | |
| 3427 public int getHorizontalPixel() { | |
| 3428 checkWidget(); | |
| 3429 return horizontalScrollOffset; | |
| 3430 } | |
| 3431 /** | |
| 3432 * Returns the line indentation of the widget. | |
| 3433 * | |
| 3434 * @return the line indentation | |
| 3435 * | |
| 3436 * @exception DWTException <ul> | |
| 3437 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3438 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3439 * </ul> | |
| 3440 * | |
| 3441 * @see #getLineIndent(int) | |
| 3442 * | |
| 3443 * @since 3.2 | |
| 3444 */ | |
| 3445 public int getIndent() { | |
| 3446 checkWidget(); | |
| 3447 return indent; | |
| 3448 } | |
| 3449 /** | |
| 3450 * Returns whether the widget justifies lines. | |
| 3451 * | |
| 3452 * @return whether lines are justified | |
| 3453 * | |
| 3454 * @exception DWTException <ul> | |
| 3455 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3456 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3457 * </ul> | |
| 3458 * | |
| 3459 * @see #getLineJustify(int) | |
| 3460 * | |
| 3461 * @since 3.2 | |
| 3462 */ | |
| 3463 public bool getJustify() { | |
| 3464 checkWidget(); | |
| 3465 return justify; | |
| 3466 } | |
| 3467 /** | |
| 3468 * Returns the action assigned to the key. | |
| 3469 * Returns DWT.NULL if there is no action associated with the key. | |
| 3470 * | |
| 3471 * @param key a key code defined in DWT.java or a character. | |
| 3472 * Optionally ORd with a state mask. Preferred state masks are one or more of | |
| 3473 * DWT.MOD1, DWT.MOD2, DWT.MOD3, since these masks account for modifier platform | |
| 3474 * differences. However, there may be cases where using the specific state masks | |
| 3475 * (i.e., DWT.CTRL, DWT.SHIFT, DWT.ALT, DWT.COMMAND) makes sense. | |
| 3476 * @return one of the predefined actions defined in ST.java or DWT.NULL | |
| 3477 * if there is no action associated with the key. | |
| 3478 * @exception DWTException <ul> | |
| 3479 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3480 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3481 * </ul> | |
| 3482 */ | |
| 3483 public int getKeyBinding(int key) { | |
| 3484 checkWidget(); | |
| 3485 if( auto p = key in keyActionMap ){ | |
| 3486 return *p; | |
| 3487 } | |
|
169
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Thomas Graber <d4rkdragon@gmail.com>
parents:
155
diff
changeset
|
3488 return DWT.NULL; |
| 155 | 3489 } |
| 3490 /** | |
| 3491 * Gets the number of characters. | |
| 3492 * | |
| 3493 * @return number of characters in the widget | |
| 3494 * @exception DWTException <ul> | |
| 3495 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3496 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3497 * </ul> | |
| 3498 */ | |
| 3499 public int getCharCount() { | |
| 3500 checkWidget(); | |
| 3501 return content.getCharCount(); | |
| 3502 } | |
| 3503 /** | |
| 213 | 3504 * Returns the line at the given line index without delimiters. |
| 3505 * Index 0 is the first line of the content. When there are not | |
| 3506 * any lines, getLine(0) is a valid call that answers an empty string. | |
| 3507 * <p> | |
| 3508 * | |
| 3509 * @param lineIndex index of the line to return. | |
| 3510 * @return the line text without delimiters | |
| 3511 * | |
| 3512 * @exception DWTException <ul> | |
| 3513 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3514 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3515 * </ul> | |
| 3516 * @exception IllegalArgumentException <ul> | |
| 3517 * <li>ERROR_INVALID_RANGE when the line index is outside the valid range (< 0 or >= getLineCount())</li> | |
| 3518 * </ul> | |
| 3519 * @since 3.4 | |
| 3520 */ | |
| 3521 public String getLine(int lineIndex) { | |
| 3522 checkWidget(); | |
| 3523 if (lineIndex < 0 || | |
| 3524 (lineIndex > 0 && lineIndex >= content.getLineCount())) { | |
| 3525 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3526 } | |
| 3527 return content.getLine(lineIndex); | |
| 3528 } | |
| 3529 /** | |
| 155 | 3530 * Returns the alignment of the line at the given index. |
| 3531 * | |
| 3532 * @param index the index of the line | |
| 3533 * | |
| 3534 * @return the line alignment | |
| 3535 * | |
| 3536 * @exception DWTException <ul> | |
| 3537 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3538 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3539 * </ul> | |
| 3540 * @exception IllegalArgumentException <ul> | |
| 3541 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3542 * </ul> | |
| 3543 * | |
| 3544 * @see #getAlignment() | |
| 3545 * | |
| 3546 * @since 3.2 | |
| 3547 */ | |
| 3548 public int getLineAlignment(int index) { | |
| 3549 checkWidget(); | |
| 3550 if (index < 0 || index > content.getLineCount()) { | |
| 3551 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3552 } | |
| 3553 return renderer.getLineAlignment(index, alignment); | |
| 3554 } | |
| 3555 /** | |
| 3556 * Returns the line at the specified offset in the text | |
| 3557 * where 0 < offset < getCharCount() so that getLineAtOffset(getCharCount()) | |
| 3558 * returns the line of the insert location. | |
| 3559 * | |
| 3560 * @param offset offset relative to the start of the content. | |
| 3561 * 0 <= offset <= getCharCount() | |
| 3562 * @return line at the specified offset in the text | |
| 3563 * @exception DWTException <ul> | |
| 3564 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3565 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3566 * </ul> | |
| 3567 * @exception IllegalArgumentException <ul> | |
| 3568 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3569 * </ul> | |
| 3570 */ | |
| 3571 public int getLineAtOffset(int offset) { | |
| 3572 checkWidget(); | |
| 3573 if (offset < 0 || offset > getCharCount()) { | |
| 3574 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3575 } | |
| 3576 return content.getLineAtOffset(offset); | |
| 3577 } | |
| 3578 /** | |
| 3579 * Returns the background color of the line at the given index. | |
| 3580 * Returns null if a LineBackgroundListener has been set or if no background | |
| 3581 * color has been specified for the line. Should not be called if a | |
| 3582 * LineBackgroundListener has been set since the listener maintains the | |
| 3583 * line background colors. | |
| 3584 * | |
| 3585 * @param index the index of the line | |
| 3586 * @return the background color of the line at the given index. | |
| 3587 * | |
| 3588 * @exception DWTException <ul> | |
| 3589 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3590 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3591 * </ul> | |
| 3592 * @exception IllegalArgumentException <ul> | |
| 3593 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3594 * </ul> | |
| 3595 */ | |
| 3596 public Color getLineBackground(int index) { | |
| 3597 checkWidget(); | |
| 3598 if (index < 0 || index > content.getLineCount()) { | |
| 3599 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3600 } | |
| 3601 return isListening(LineGetBackground) ? null : renderer.getLineBackground(index, null); | |
| 3602 } | |
| 3603 /** | |
| 3604 * Returns the bullet of the line at the given index. | |
| 3605 * | |
| 3606 * @param index the index of the line | |
| 3607 * | |
| 3608 * @return the line bullet | |
| 3609 * | |
| 3610 * @exception DWTException <ul> | |
| 3611 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3612 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3613 * </ul> | |
| 3614 * @exception IllegalArgumentException <ul> | |
| 3615 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3616 * </ul> | |
| 3617 * | |
| 3618 * @since 3.2 | |
| 3619 */ | |
| 3620 public Bullet getLineBullet(int index) { | |
| 3621 checkWidget(); | |
| 3622 if (index < 0 || index > content.getLineCount()) { | |
| 3623 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3624 } | |
| 3625 return isListening(LineGetStyle) ? null : renderer.getLineBullet(index, null); | |
| 3626 } | |
| 3627 /** | |
| 3628 * Returns the line background data for the given line or null if | |
| 3629 * there is none. | |
| 3630 * | |
| 3631 * @param lineOffset offset of the line start relative to the start | |
| 3632 * of the content. | |
| 3633 * @param line line to get line background data for | |
| 3634 * @return line background data for the given line. | |
| 3635 */ | |
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3636 StyledTextEvent getLineBackgroundData(int lineOffset, String line) { |
| 155 | 3637 return sendLineEvent(LineGetBackground, lineOffset, line); |
| 3638 } | |
| 3639 /** | |
| 3640 * Gets the number of text lines. | |
| 3641 * | |
| 3642 * @return the number of lines in the widget | |
| 3643 * @exception DWTException <ul> | |
| 3644 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3645 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3646 * </ul> | |
| 3647 */ | |
| 3648 public int getLineCount() { | |
| 3649 checkWidget(); | |
| 3650 return content.getLineCount(); | |
| 3651 } | |
| 3652 /** | |
| 3653 * Returns the number of lines that can be completely displayed in the | |
| 3654 * widget client area. | |
| 3655 * | |
| 3656 * @return number of lines that can be completely displayed in the widget | |
| 3657 * client area. | |
| 3658 */ | |
| 3659 int getLineCountWhole() { | |
| 3660 if (isFixedLineHeight()) { | |
| 3661 int lineHeight = renderer.getLineHeight(); | |
| 3662 return lineHeight !is 0 ? clientAreaHeight / lineHeight : 1; | |
| 3663 } | |
| 3664 return getBottomIndex() - topIndex + 1; | |
| 3665 } | |
| 3666 /** | |
| 3667 * Returns the line delimiter used for entering new lines by key down | |
| 3668 * or paste operation. | |
| 3669 * | |
| 3670 * @return line delimiter used for entering new lines by key down | |
| 3671 * or paste operation. | |
| 3672 * @exception DWTException <ul> | |
| 3673 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3674 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3675 * </ul> | |
| 3676 */ | |
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3677 public String getLineDelimiter() { |
| 155 | 3678 checkWidget(); |
| 3679 return content.getLineDelimiter(); | |
| 3680 } | |
| 3681 /** | |
| 3682 * Returns the line height. | |
| 3683 * <p> | |
| 3684 * Note: this API should not be used if a StyleRange attribute causes lines to | |
| 3685 * have different heights (i.e. different fonts, rise, etc). | |
| 3686 * </p> | |
| 3687 * | |
| 3688 * @return line height in pixel. | |
| 3689 * @exception DWTException <ul> | |
| 3690 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3691 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3692 * </ul> | |
| 3693 * @see #getLineHeight(int) | |
| 3694 */ | |
| 3695 public int getLineHeight() { | |
| 3696 checkWidget(); | |
| 3697 return renderer.getLineHeight(); | |
| 3698 } | |
| 3699 /** | |
| 3700 * Returns the line height at the given offset. | |
| 3701 * | |
| 3702 * @param offset the offset | |
| 3703 * | |
| 3704 * @return line height in pixels | |
| 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_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3712 * </ul> | |
| 3713 * | |
| 3714 * @since 3.2 | |
| 3715 */ | |
| 3716 public int getLineHeight(int offset) { | |
| 3717 checkWidget(); | |
| 3718 if (!(0 <= offset && offset <= content.getCharCount())) { | |
| 3719 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3720 } | |
| 3721 if (isFixedLineHeight()) { | |
| 3722 return renderer.getLineHeight(); | |
| 3723 } | |
| 3724 int lineIndex = content.getLineAtOffset(offset); | |
| 3725 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 3726 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3727 int lineInParagraph = layout.getLineIndex(Math.min(offset - lineOffset, layout.getText().length)); | |
| 3728 int height = layout.getLineBounds(lineInParagraph).height; | |
| 3729 renderer.disposeTextLayout(layout); | |
| 3730 return height; | |
| 3731 } | |
| 3732 /** | |
| 3733 * Returns the indentation of the line at the given index. | |
| 3734 * | |
| 3735 * @param index the index of the line | |
| 3736 * | |
| 3737 * @return the line indentation | |
| 3738 * | |
| 3739 * @exception DWTException <ul> | |
| 3740 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3741 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3742 * </ul> | |
| 3743 * @exception IllegalArgumentException <ul> | |
| 3744 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3745 * </ul> | |
| 3746 * | |
| 3747 * @see #getIndent() | |
| 3748 * | |
| 3749 * @since 3.2 | |
| 3750 */ | |
| 3751 public int getLineIndent(int index) { | |
| 3752 checkWidget(); | |
| 3753 if (index < 0 || index > content.getLineCount()) { | |
| 3754 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3755 } | |
| 3756 return isListening(LineGetStyle) ? 0 : renderer.getLineIndent(index, indent); | |
| 3757 } | |
| 3758 /** | |
| 3759 * Returns whether the line at the given index is justified. | |
| 3760 * | |
| 3761 * @param index the index of the line | |
| 3762 * | |
| 3763 * @return whether the line is justified | |
| 3764 * | |
| 3765 * @exception DWTException <ul> | |
| 3766 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3767 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3768 * </ul> | |
| 3769 * @exception IllegalArgumentException <ul> | |
| 3770 * <li>ERROR_INVALID_ARGUMENT when the index is invalid</li> | |
| 3771 * </ul> | |
| 3772 * | |
| 3773 * @see #getJustify() | |
| 3774 * | |
| 3775 * @since 3.2 | |
| 3776 */ | |
| 3777 public bool getLineJustify(int index) { | |
| 3778 checkWidget(); | |
| 3779 if (index < 0 || index > content.getLineCount()) { | |
| 3780 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 3781 } | |
| 3782 return isListening(LineGetStyle) ? false : renderer.getLineJustify(index, justify); | |
| 3783 } | |
| 3784 /** | |
| 3785 * Returns the line spacing of the widget. | |
| 3786 * | |
| 3787 * @return the line spacing | |
| 3788 * | |
| 3789 * @exception DWTException <ul> | |
| 3790 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3791 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3792 * </ul> | |
| 3793 * | |
| 3794 * @since 3.2 | |
| 3795 */ | |
| 3796 public int getLineSpacing() { | |
| 3797 checkWidget(); | |
| 3798 return lineSpacing; | |
| 3799 } | |
| 3800 /** | |
| 3801 * Returns the line style data for the given line or null if there is | |
| 3802 * none. | |
| 3803 * <p> | |
| 3804 * If there is a LineStyleListener but it does not set any styles, | |
| 3805 * the StyledTextEvent.styles field will be initialized to an empty | |
| 3806 * array. | |
| 3807 * </p> | |
| 3808 * | |
| 3809 * @param lineOffset offset of the line start relative to the start of | |
| 3810 * the content. | |
| 3811 * @param line line to get line styles for | |
| 3812 * @return line style data for the given line. Styles may start before | |
| 3813 * line start and end after line end | |
| 3814 */ | |
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3815 StyledTextEvent getLineStyleData(int lineOffset, String line) { |
| 155 | 3816 return sendLineEvent(LineGetStyle, lineOffset, line); |
| 3817 } | |
| 3818 /** | |
| 3819 * Returns the top pixel, relative to the client area, of a given line. | |
| 3820 * Clamps out of ranges index. | |
| 3821 * | |
| 3822 * @param lineIndex the line index, the max value is lineCount. If | |
| 3823 * lineIndex is lineCount it returns the bottom pixel of the last line. | |
| 3824 * It means this function can be used to retrieve the bottom pixel of any line. | |
| 3825 * | |
| 3826 * @since 3.2 | |
| 3827 */ | |
| 3828 public int getLinePixel(int lineIndex) { | |
| 3829 checkWidget(); | |
| 3830 int lineCount = content.getLineCount(); | |
| 3831 lineIndex = Math.max(0, Math.min(lineCount, lineIndex)); | |
| 3832 if (isFixedLineHeight()) { | |
| 3833 int lineHeight = renderer.getLineHeight(); | |
| 3834 return lineIndex * lineHeight - getVerticalScrollOffset() + topMargin; | |
| 3835 } | |
| 3836 if (lineIndex is topIndex) return topIndexY + topMargin; | |
| 3837 int height = topIndexY; | |
| 3838 if (lineIndex > topIndex) { | |
| 3839 for (int i = topIndex; i < lineIndex; i++) { | |
| 3840 height += renderer.getLineHeight(i); | |
| 3841 } | |
| 3842 } else { | |
| 3843 for (int i = topIndex - 1; i >= lineIndex; i--) { | |
| 3844 height -= renderer.getLineHeight(i); | |
| 3845 } | |
| 3846 } | |
| 3847 return height + topMargin; | |
| 3848 } | |
| 3849 /** | |
| 3850 * Returns the line index for a y, relative to the client area. | |
| 3851 * The line index returned is always in the range 0..lineCount - 1. | |
| 3852 * | |
| 3853 * @since 3.2 | |
| 3854 */ | |
| 3855 public int getLineIndex(int y) { | |
| 3856 checkWidget(); | |
| 3857 y -= topMargin; | |
| 3858 if (isFixedLineHeight()) { | |
| 3859 int lineHeight = renderer.getLineHeight(); | |
| 3860 int lineIndex = (y + getVerticalScrollOffset()) / lineHeight; | |
| 3861 int lineCount = content.getLineCount(); | |
| 3862 lineIndex = Math.max(0, Math.min(lineCount - 1, lineIndex)); | |
| 3863 return lineIndex; | |
| 3864 } | |
| 3865 if (y is topIndexY) return topIndex; | |
| 3866 int line = topIndex; | |
| 3867 if (y < topIndexY) { | |
| 3868 while (y < topIndexY && line > 0) { | |
| 3869 y += renderer.getLineHeight(--line); | |
| 3870 } | |
| 3871 } else { | |
| 3872 int lineCount = content.getLineCount(); | |
| 3873 int lineHeight = renderer.getLineHeight(line); | |
| 3874 while (y - lineHeight >= topIndexY && line < lineCount - 1) { | |
| 3875 y -= lineHeight; | |
| 3876 lineHeight = renderer.getLineHeight(++line); | |
| 3877 } | |
| 3878 } | |
| 3879 return line; | |
| 3880 } | |
| 3881 /** | |
| 3882 * Returns the x, y location of the upper left corner of the character | |
| 3883 * bounding box at the specified offset in the text. The point is | |
| 3884 * relative to the upper left corner of the widget client area. | |
| 3885 * | |
| 3886 * @param offset offset relative to the start of the content. | |
| 3887 * 0 <= offset <= getCharCount() | |
| 3888 * @return x, y location of the upper left corner of the character | |
| 3889 * bounding box at the specified offset in the text. | |
| 3890 * @exception DWTException <ul> | |
| 3891 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3892 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3893 * </ul> | |
| 3894 * @exception IllegalArgumentException <ul> | |
| 3895 * <li>ERROR_INVALID_RANGE when the offset is outside the valid range (< 0 or > getCharCount())</li> | |
| 3896 * </ul> | |
| 3897 */ | |
| 3898 public Point getLocationAtOffset(int offset) { | |
| 3899 checkWidget(); | |
| 3900 if (offset < 0 || offset > getCharCount()) { | |
| 3901 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3902 } | |
| 3903 return getPointAtOffset(offset); | |
| 3904 } | |
| 3905 /** | |
| 3906 * Returns the character offset of the first character of the given line. | |
| 3907 * | |
| 3908 * @param lineIndex index of the line, 0 based relative to the first | |
| 3909 * line in the content. 0 <= lineIndex < getLineCount(), except | |
| 3910 * lineIndex may always be 0 | |
| 3911 * @return offset offset of the first character of the line, relative to | |
| 3912 * the beginning of the document. The first character of the document is | |
| 3913 * at offset 0. | |
| 3914 * When there are not any lines, getOffsetAtLine(0) is a valid call that | |
| 3915 * answers 0. | |
| 3916 * @exception DWTException <ul> | |
| 3917 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3918 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3919 * </ul> | |
| 3920 * @exception IllegalArgumentException <ul> | |
| 213 | 3921 * <li>ERROR_INVALID_RANGE when the line index is outside the valid range (< 0 or >= getLineCount())</li> |
| 155 | 3922 * </ul> |
| 3923 * @since 2.0 | |
| 3924 */ | |
| 3925 public int getOffsetAtLine(int lineIndex) { | |
| 3926 checkWidget(); | |
| 3927 if (lineIndex < 0 || | |
| 3928 (lineIndex > 0 && lineIndex >= content.getLineCount())) { | |
| 3929 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 3930 } | |
| 3931 return content.getOffsetAtLine(lineIndex); | |
| 3932 } | |
| 3933 /** | |
| 3934 * Returns the offset of the character at the given location relative | |
| 3935 * to the first character in the document. | |
| 3936 * <p> | |
| 3937 * The return value reflects the character offset that the caret will | |
| 3938 * be placed at if a mouse click occurred at the specified location. | |
| 3939 * If the x coordinate of the location is beyond the center of a character | |
| 3940 * the returned offset will be behind the character. | |
| 3941 * </p> | |
| 3942 * | |
| 3943 * @param point the origin of character bounding box relative to | |
| 3944 * the origin of the widget client area. | |
| 3945 * @return offset of the character at the given location relative | |
| 3946 * to the first character in the document. | |
| 3947 * @exception DWTException <ul> | |
| 3948 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 3949 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 3950 * </ul> | |
| 3951 * @exception IllegalArgumentException <ul> | |
| 3952 * <li>ERROR_NULL_ARGUMENT when point is null</li> | |
| 3953 * <li>ERROR_INVALID_ARGUMENT when there is no character at the specified location</li> | |
| 3954 * </ul> | |
| 3955 */ | |
| 3956 public int getOffsetAtLocation(Point point) { | |
| 3957 checkWidget(); | |
| 3958 if (point is null) { | |
| 3959 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 3960 } | |
| 213 | 3961 int[] trailing = new int[1]; |
| 3962 int offset = getOffsetAtPoint(point.x, point.y, trailing, true); | |
| 3963 if (offset is -1) { | |
| 155 | 3964 DWT.error(DWT.ERROR_INVALID_ARGUMENT); |
| 3965 } | |
| 213 | 3966 return offset + trailing[0]; |
| 155 | 3967 } |
| 3968 int getOffsetAtPoint(int x, int y) { | |
| 3969 int lineIndex = getLineIndex(y); | |
| 3970 y -= getLinePixel(lineIndex); | |
| 3971 return getOffsetAtPoint(x, y, lineIndex); | |
| 3972 } | |
| 3973 /** | |
| 3974 * Returns the offset at the specified x location in the specified line. | |
| 3975 * | |
| 3976 * @param x x location of the mouse location | |
| 3977 * @param line line the mouse location is in | |
| 3978 * @return the offset at the specified x location in the specified line, | |
| 3979 * relative to the beginning of the document | |
| 3980 */ | |
| 3981 int getOffsetAtPoint(int x, int y, int lineIndex) { | |
| 3982 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 3983 x += horizontalScrollOffset - leftMargin; | |
| 3984 int[] trailing = new int[1]; | |
| 3985 int offsetInLine = layout.getOffset(x, y, trailing); | |
| 3986 caretAlignment = OFFSET_LEADING; | |
| 3987 if (trailing[0] !is 0) { | |
| 3988 int lineInParagraph = layout.getLineIndex(offsetInLine + trailing[0]); | |
| 3989 int lineStart = layout.getLineOffsets()[lineInParagraph]; | |
| 3990 if (offsetInLine + trailing[0] is lineStart) { | |
| 3991 offsetInLine += trailing[0]; | |
| 3992 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 3993 } else { | |
|
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3994 String line = content.getLine(lineIndex); |
| 155 | 3995 int level; |
| 3996 int offset = offsetInLine; | |
| 3997 while (offset > 0 && tango.text.Unicode.isDigit(line[offset])) offset--; | |
| 3998 if (offset is 0 && tango.text.Unicode.isDigit(line[offset])) { | |
| 3999 level = isMirrored() ? 1 : 0; | |
| 4000 } else { | |
| 4001 level = layout.getLevel(offset) & 0x1; | |
| 4002 } | |
| 4003 offsetInLine += trailing[0]; | |
| 4004 int trailingLevel = layout.getLevel(offsetInLine) & 0x1; | |
| 4005 if ((level ^ trailingLevel) !is 0) { | |
| 4006 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 4007 } else { | |
| 4008 caretAlignment = OFFSET_LEADING; | |
| 4009 } | |
| 4010 } | |
| 4011 } | |
| 4012 renderer.disposeTextLayout(layout); | |
| 4013 return offsetInLine + content.getOffsetAtLine(lineIndex); | |
| 4014 } | |
| 213 | 4015 int getOffsetAtPoint(int x, int y, int[] trailing, bool inTextOnly) { |
| 4016 if (inTextOnly && y + getVerticalScrollOffset() < 0 || x + horizontalScrollOffset < 0) { | |
| 4017 return -1; | |
| 4018 } | |
| 4019 int bottomIndex = getPartialBottomIndex(); | |
| 4020 int height = getLinePixel(bottomIndex + 1); | |
| 4021 if (inTextOnly && y > height) { | |
| 4022 return -1; | |
| 4023 } | |
| 4024 int lineIndex = getLineIndex(y); | |
| 4025 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4026 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4027 x += horizontalScrollOffset - leftMargin ; | |
| 4028 y -= getLinePixel(lineIndex); | |
| 4029 int offset = layout.getOffset(x, y, trailing); | |
| 4030 Rectangle rect = layout.getLineBounds(layout.getLineIndex(offset)); | |
| 4031 renderer.disposeTextLayout(layout); | |
| 4032 if (inTextOnly && !(rect.x <= x && x <= rect.x + rect.width)) { | |
| 4033 return -1; | |
| 4034 } | |
| 4035 return offset + lineOffset; | |
| 4036 } | |
| 155 | 4037 /** |
| 4038 * Returns the orientation of the receiver. | |
| 4039 * | |
| 4040 * @return the orientation style | |
| 4041 * | |
| 4042 * @exception DWTException <ul> | |
| 4043 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4044 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4045 * </ul> | |
| 4046 * | |
| 4047 * @since 2.1.2 | |
| 4048 */ | |
| 4049 public int getOrientation () { | |
| 4050 checkWidget(); | |
| 4051 return isMirrored() ? DWT.RIGHT_TO_LEFT : DWT.LEFT_TO_RIGHT; | |
| 4052 } | |
| 4053 /** | |
| 4054 * Returns the index of the last partially visible line. | |
| 4055 * | |
| 4056 * @return index of the last partially visible line. | |
| 4057 */ | |
| 4058 int getPartialBottomIndex() { | |
| 4059 if (isFixedLineHeight()) { | |
| 4060 int lineHeight = renderer.getLineHeight(); | |
| 4061 int partialLineCount = Compatibility.ceil(clientAreaHeight, lineHeight); | |
| 213 | 4062 return Math.max(0, Math.min(content.getLineCount(), topIndex + partialLineCount) - 1); |
| 155 | 4063 } |
| 4064 return getLineIndex(clientAreaHeight - bottomMargin); | |
| 4065 } | |
| 4066 /** | |
| 4067 * Returns the index of the first partially visible line. | |
| 4068 * | |
| 4069 * @return index of the first partially visible line. | |
| 4070 */ | |
| 4071 int getPartialTopIndex() { | |
| 4072 if (isFixedLineHeight()) { | |
| 4073 int lineHeight = renderer.getLineHeight(); | |
| 4074 return getVerticalScrollOffset() / lineHeight; | |
| 4075 } | |
| 4076 return topIndexY <= 0 ? topIndex : topIndex - 1; | |
| 4077 } | |
| 4078 /** | |
| 4079 * Returns the content in the specified range using the platform line | |
| 4080 * delimiter to separate lines. | |
| 4081 * | |
| 4082 * @param writer the TextWriter to write line text into | |
| 4083 * @return the content in the specified range using the platform line | |
| 4084 * delimiter to separate lines as written by the specified TextWriter. | |
| 4085 */ | |
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4086 String getPlatformDelimitedText(TextWriter writer) { |
| 155 | 4087 int end = writer.getStart() + writer.getCharCount(); |
| 4088 int startLine = content.getLineAtOffset(writer.getStart()); | |
| 4089 int endLine = content.getLineAtOffset(end); | |
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4090 String endLineText = content.getLine(endLine); |
| 155 | 4091 int endLineOffset = content.getOffsetAtLine(endLine); |
| 4092 | |
| 4093 for (int i = startLine; i <= endLine; i++) { | |
| 4094 writer.writeLine(content.getLine(i), content.getOffsetAtLine(i)); | |
| 4095 if (i < endLine) { | |
| 4096 writer.writeLineDelimiter(PlatformLineDelimiter); | |
| 4097 } | |
| 4098 } | |
| 4099 if (end > endLineOffset + endLineText.length) { | |
| 4100 writer.writeLineDelimiter(PlatformLineDelimiter); | |
| 4101 } | |
| 4102 writer.close(); | |
| 4103 return writer.toString(); | |
| 4104 } | |
| 4105 /** | |
| 4106 * Returns all the ranges of text that have an associated StyleRange. | |
| 4107 * Returns an empty array if a LineStyleListener has been set. | |
| 4108 * Should not be called if a LineStyleListener has been set since the | |
| 4109 * listener maintains the styles. | |
| 4110 * <p> | |
| 4111 * The ranges array contains start and length pairs. Each pair refers to | |
| 4112 * the corresponding style in the styles array. For example, the pair | |
| 4113 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 4114 * at styles[n/2] returned by <code>getStyleRanges(int, int, bool)</code>. | |
| 4115 * </p> | |
| 4116 * | |
| 4117 * @return the ranges or an empty array if a LineStyleListener has been set. | |
| 4118 * | |
| 4119 * @exception DWTException <ul> | |
| 4120 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4121 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4122 * </ul> | |
| 4123 * | |
| 4124 * @since 3.2 | |
| 4125 * | |
| 4126 * @see #getStyleRanges(bool) | |
| 4127 */ | |
| 4128 public int[] getRanges() { | |
| 4129 checkWidget(); | |
| 4130 if (!isListening(LineGetStyle)) { | |
| 4131 int[] ranges = renderer.getRanges(0, content.getCharCount()); | |
| 4132 if (ranges !is null) return ranges; | |
| 4133 } | |
| 4134 return new int[0]; | |
| 4135 } | |
| 4136 /** | |
| 4137 * Returns the ranges of text that have an associated StyleRange. | |
| 4138 * Returns an empty array if a LineStyleListener has been set. | |
| 4139 * Should not be called if a LineStyleListener has been set since the | |
| 4140 * listener maintains the styles. | |
| 4141 * <p> | |
| 4142 * The ranges array contains start and length pairs. Each pair refers to | |
| 4143 * the corresponding style in the styles array. For example, the pair | |
| 4144 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 4145 * at styles[n/2] returned by <code>getStyleRanges(int, int, bool)</code>. | |
| 4146 * </p> | |
| 4147 * | |
| 4148 * @param start the start offset of the style ranges to return | |
| 4149 * @param length the number of style ranges to return | |
| 4150 * | |
| 4151 * @return the ranges or an empty array if a LineStyleListener has been set. | |
| 4152 * | |
| 4153 * @exception DWTException <ul> | |
| 4154 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4155 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4156 * </ul> | |
| 4157 * @exception IllegalArgumentException <ul> | |
| 4158 * <li>ERROR_INVALID_RANGE if start or length are outside the widget content</li> | |
| 4159 * </ul> | |
| 4160 * | |
| 4161 * @since 3.2 | |
| 4162 * | |
| 4163 * @see #getStyleRanges(int, int, bool) | |
| 4164 */ | |
| 4165 public int[] getRanges(int start, int length) { | |
| 4166 checkWidget(); | |
| 4167 int contentLength = getCharCount(); | |
| 4168 int end = start + length; | |
| 4169 if (start > end || start < 0 || end > contentLength) { | |
| 4170 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 4171 } | |
| 4172 if (!isListening(LineGetStyle)) { | |
| 4173 int[] ranges = renderer.getRanges(start, length); | |
| 4174 if (ranges !is null) return ranges; | |
| 4175 } | |
| 4176 return new int[0]; | |
| 4177 } | |
| 4178 /** | |
| 4179 * Returns the selection. | |
| 4180 * <p> | |
| 4181 * Text selections are specified in terms of caret positions. In a text | |
| 4182 * widget that contains N characters, there are N+1 caret positions, | |
| 4183 * ranging from 0..N | |
| 4184 * </p> | |
| 4185 * | |
| 4186 * @return start and end of the selection, x is the offset of the first | |
| 4187 * selected character, y is the offset after the last selected character. | |
| 4188 * The selection values returned are visual (i.e., x will always always be | |
| 4189 * <= y). To determine if a selection is right-to-left (RtoL) vs. left-to-right | |
| 4190 * (LtoR), compare the caretOffset to the start and end of the selection | |
| 4191 * (e.g., caretOffset is start of selection implies that the selection is RtoL). | |
| 4192 * @see #getSelectionRange | |
| 4193 * @exception DWTException <ul> | |
| 4194 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4195 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4196 * </ul> | |
| 4197 */ | |
| 4198 public Point getSelection() { | |
| 4199 checkWidget(); | |
| 4200 return new Point(selection.x, selection.y); | |
| 4201 } | |
| 4202 /** | |
| 4203 * Returns the selection. | |
| 4204 * | |
| 4205 * @return start and length of the selection, x is the offset of the | |
| 4206 * first selected character, relative to the first character of the | |
| 4207 * widget content. y is the length of the selection. | |
| 4208 * The selection values returned are visual (i.e., length will always always be | |
| 4209 * positive). To determine if a selection is right-to-left (RtoL) vs. left-to-right | |
| 4210 * (LtoR), compare the caretOffset to the start and end of the selection | |
| 4211 * (e.g., caretOffset is start of selection implies that the selection is RtoL). | |
| 4212 * @exception DWTException <ul> | |
| 4213 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4214 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4215 * </ul> | |
| 4216 */ | |
| 4217 public Point getSelectionRange() { | |
| 4218 checkWidget(); | |
| 4219 return new Point(selection.x, selection.y - selection.x); | |
| 4220 } | |
| 4221 /** | |
| 4222 * Returns the receiver's selection background color. | |
| 4223 * | |
| 4224 * @return the selection background color | |
| 4225 * | |
| 4226 * @exception DWTException <ul> | |
| 4227 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4228 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4229 * </ul> | |
| 4230 * @since 2.1 | |
| 4231 */ | |
| 4232 public Color getSelectionBackground() { | |
| 4233 checkWidget(); | |
| 4234 if (selectionBackground is null) { | |
| 4235 return getDisplay().getSystemColor(DWT.COLOR_LIST_SELECTION); | |
| 4236 } | |
| 4237 return selectionBackground; | |
| 4238 } | |
| 4239 /** | |
| 4240 * Gets the number of selected characters. | |
| 4241 * | |
| 4242 * @return the number of selected characters. | |
| 4243 * @exception DWTException <ul> | |
| 4244 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4245 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4246 * </ul> | |
| 4247 */ | |
| 4248 public int getSelectionCount() { | |
| 4249 checkWidget(); | |
| 4250 return getSelectionRange().y; | |
| 4251 } | |
| 4252 /** | |
| 4253 * Returns the receiver's selection foreground color. | |
| 4254 * | |
| 4255 * @return the selection foreground color | |
| 4256 * | |
| 4257 * @exception DWTException <ul> | |
| 4258 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4259 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4260 * </ul> | |
| 4261 * @since 2.1 | |
| 4262 */ | |
| 4263 public Color getSelectionForeground() { | |
| 4264 checkWidget(); | |
| 4265 if (selectionForeground is null) { | |
| 4266 return getDisplay().getSystemColor(DWT.COLOR_LIST_SELECTION_TEXT); | |
| 4267 } | |
| 4268 return selectionForeground; | |
| 4269 } | |
| 4270 /** | |
| 4271 * Returns the selected text. | |
| 4272 * | |
| 4273 * @return selected text, or an empty String if there is no selection. | |
| 4274 * @exception DWTException <ul> | |
| 4275 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4276 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4277 * </ul> | |
| 4278 */ | |
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4279 public String getSelectionText() { |
| 155 | 4280 checkWidget(); |
| 4281 return content.getTextRange(selection.x, selection.y - selection.x); | |
| 4282 } | |
| 4283 public override int getStyle() { | |
| 4284 int style = super.getStyle(); | |
| 4285 style &= ~(DWT.LEFT_TO_RIGHT | DWT.RIGHT_TO_LEFT | DWT.MIRRORED); | |
| 4286 if (isMirrored()) { | |
| 4287 style |= DWT.RIGHT_TO_LEFT | DWT.MIRRORED; | |
| 4288 } else { | |
| 4289 style |= DWT.LEFT_TO_RIGHT; | |
| 4290 } | |
| 4291 return style; | |
| 4292 } | |
| 4293 | |
| 4294 /** | |
| 4295 * Returns the text segments that should be treated as if they | |
| 4296 * had a different direction than the surrounding text. | |
| 4297 * | |
| 4298 * @param lineOffset offset of the first character in the line. | |
| 4299 * 0 based from the beginning of the document. | |
| 4300 * @param line text of the line to specify bidi segments for | |
| 4301 * @return text segments that should be treated as if they had a | |
| 4302 * different direction than the surrounding text. Only the start | |
| 4303 * index of a segment is specified, relative to the start of the | |
| 4304 * line. Always starts with 0 and ends with the line length. | |
| 4305 * @exception IllegalArgumentException <ul> | |
| 4306 * <li>ERROR_INVALID_ARGUMENT - if the segment indices returned | |
| 4307 * by the listener do not start with 0, are not in ascending order, | |
| 4308 * exceed the line length or have duplicates</li> | |
| 4309 * </ul> | |
| 4310 */ | |
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4311 int [] getBidiSegments(int lineOffset, String line) { |
| 155 | 4312 if (!isBidi()) return null; |
| 4313 if (!isListening(LineGetSegments)) { | |
| 4314 return getBidiSegmentsCompatibility(line, lineOffset); | |
| 4315 } | |
| 4316 StyledTextEvent event = sendLineEvent(LineGetSegments, lineOffset, line); | |
| 4317 int lineLength = line.length; | |
| 4318 int[] segments; | |
| 4319 if (event is null || event.segments is null || event.segments.length is 0) { | |
| 4320 segments = [0, lineLength]; | |
| 4321 } else { | |
| 4322 int segmentCount = event.segments.length; | |
| 4323 | |
| 4324 // test segment index consistency | |
| 4325 if (event.segments[0] !is 0) { | |
| 4326 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 4327 } | |
| 4328 for (int i = 1; i < segmentCount; i++) { | |
| 4329 if (event.segments[i] <= event.segments[i - 1] || event.segments[i] > lineLength) { | |
| 4330 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 4331 } | |
| 4332 } | |
| 4333 // ensure that last segment index is line end offset | |
| 4334 if (event.segments[segmentCount - 1] !is lineLength) { | |
| 4335 segments = new int[segmentCount + 1]; | |
| 4336 System.arraycopy(event.segments, 0, segments, 0, segmentCount); | |
| 4337 segments[segmentCount] = lineLength; | |
| 4338 } else { | |
| 4339 segments = event.segments; | |
| 4340 } | |
| 4341 } | |
| 4342 return segments; | |
| 4343 } | |
| 4344 /** | |
| 4345 * @see #getBidiSegments | |
| 4346 * Supports deprecated setBidiColoring API. Remove when API is removed. | |
| 4347 */ | |
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4348 int [] getBidiSegmentsCompatibility(String line, int lineOffset) { |
| 155 | 4349 int lineLength = line.length; |
| 4350 if (!bidiColoring) { | |
| 4351 return [0, lineLength]; | |
| 4352 } | |
| 4353 StyleRange [] styles = null; | |
| 4354 StyledTextEvent event = getLineStyleData(lineOffset, line); | |
| 4355 if (event !is null) { | |
| 4356 styles = event.styles; | |
| 4357 } else { | |
| 4358 styles = renderer.getStyleRanges(lineOffset, lineLength, true); | |
| 4359 } | |
| 4360 if (styles is null || styles.length is 0) { | |
| 4361 return [0, lineLength]; | |
| 4362 } | |
| 4363 int k=0, count = 1; | |
| 4364 while (k < styles.length && styles[k].start is 0 && styles[k].length is lineLength) { | |
| 4365 k++; | |
| 4366 } | |
| 4367 int[] offsets = new int[(styles.length - k) * 2 + 2]; | |
| 4368 for (int i = k; i < styles.length; i++) { | |
| 4369 StyleRange style = styles[i]; | |
| 4370 int styleLineStart = Math.max(style.start - lineOffset, 0); | |
| 4371 int styleLineEnd = Math.max(style.start + style.length - lineOffset, styleLineStart); | |
| 4372 styleLineEnd = Math.min (styleLineEnd, line.length ); | |
| 4373 if (i > 0 && count > 1 && | |
| 4374 ((styleLineStart >= offsets[count-2] && styleLineStart <= offsets[count-1]) || | |
| 4375 (styleLineEnd >= offsets[count-2] && styleLineEnd <= offsets[count-1])) && | |
| 4376 style.similarTo(styles[i-1])) { | |
| 4377 offsets[count-2] = Math.min(offsets[count-2], styleLineStart); | |
| 4378 offsets[count-1] = Math.max(offsets[count-1], styleLineEnd); | |
| 4379 } else { | |
| 4380 if (styleLineStart > offsets[count - 1]) { | |
| 4381 offsets[count] = styleLineStart; | |
| 4382 count++; | |
| 4383 } | |
| 4384 offsets[count] = styleLineEnd; | |
| 4385 count++; | |
| 4386 } | |
| 4387 } | |
| 4388 // add offset for last non-colored segment in line, if any | |
| 4389 if (lineLength > offsets[count-1]) { | |
| 4390 offsets [count] = lineLength; | |
| 4391 count++; | |
| 4392 } | |
| 4393 if (count is offsets.length) { | |
| 4394 return offsets; | |
| 4395 } | |
| 4396 int [] result = new int [count]; | |
| 4397 System.arraycopy (offsets, 0, result, 0, count); | |
| 4398 return result; | |
| 4399 } | |
| 4400 /** | |
| 4401 * Returns the style range at the given offset. | |
| 4402 * <p> | |
| 4403 * Returns null if a LineStyleListener has been set or if a style is not set | |
| 4404 * for the offset. | |
| 4405 * Should not be called if a LineStyleListener has been set since the | |
| 4406 * listener maintains the styles. | |
| 4407 * </p> | |
| 4408 * | |
| 4409 * @param offset the offset to return the style for. | |
| 4410 * 0 <= offset < getCharCount() must be true. | |
| 4411 * @return a StyleRange with start is offset and length is 1, indicating | |
| 4412 * the style at the given offset. null if a LineStyleListener has been set | |
| 4413 * or if a style is not set for the given offset. | |
| 4414 * @exception DWTException <ul> | |
| 4415 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4416 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4417 * </ul> | |
| 4418 * @exception IllegalArgumentException <ul> | |
| 4419 * <li>ERROR_INVALID_ARGUMENT when the offset is invalid</li> | |
| 4420 * </ul> | |
| 4421 */ | |
| 4422 public StyleRange getStyleRangeAtOffset(int offset) { | |
| 4423 checkWidget(); | |
| 4424 if (offset < 0 || offset >= getCharCount()) { | |
| 4425 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 4426 } | |
| 4427 if (!isListening(LineGetStyle)) { | |
| 4428 StyleRange[] ranges = renderer.getStyleRanges(offset, 1, true); | |
| 4429 if (ranges !is null) return ranges[0]; | |
| 4430 } | |
| 4431 return null; | |
| 4432 } | |
| 4433 /** | |
| 4434 * Returns the styles. | |
| 4435 * <p> | |
| 4436 * Returns an empty array if a LineStyleListener has been set. | |
| 4437 * Should not be called if a LineStyleListener has been set since the | |
| 4438 * listener maintains the styles. | |
| 4439 * <p></p> | |
| 4440 * Note: Because a StyleRange includes the start and length, the | |
| 4441 * same instance cannot occur multiple times in the array of styles. | |
| 4442 * If the same style attributes, such as font and color, occur in | |
| 4443 * multiple StyleRanges, <code>getStyleRanges(bool)</code> | |
| 4444 * can be used to get the styles without the ranges. | |
| 4445 * </p> | |
| 4446 * | |
| 4447 * @return the styles or an empty array if a LineStyleListener has been set. | |
| 4448 * | |
| 4449 * @exception DWTException <ul> | |
| 4450 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4451 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4452 * </ul> | |
| 4453 * | |
| 4454 * @see #getStyleRanges(bool) | |
| 4455 */ | |
| 4456 public StyleRange[] getStyleRanges() { | |
| 4457 checkWidget(); | |
| 4458 return getStyleRanges(0, content.getCharCount(), true); | |
| 4459 } | |
| 4460 /** | |
| 4461 * Returns the styles. | |
| 4462 * <p> | |
| 4463 * Returns an empty array if a LineStyleListener has been set. | |
| 4464 * Should not be called if a LineStyleListener has been set since the | |
| 4465 * listener maintains the styles. | |
| 4466 * </p><p> | |
| 4467 * Note: When <code>includeRanges</code> is true, the start and length | |
| 4468 * fields of each StyleRange will be valid, however the StyleRange | |
| 4469 * objects may need to be cloned. When <code>includeRanges</code> is | |
| 4470 * false, <code>getRanges(int, int)</code> can be used to get the | |
| 4471 * associated ranges. | |
| 4472 * </p> | |
| 4473 * | |
| 4474 * @param includeRanges whether the start and length field of the StyleRanges should be set. | |
| 4475 * | |
| 4476 * @return the styles or an empty array if a LineStyleListener has been set. | |
| 4477 * | |
| 4478 * @exception DWTException <ul> | |
| 4479 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4480 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4481 * </ul> | |
| 4482 * | |
| 4483 * @since 3.2 | |
| 4484 * | |
| 4485 * @see #getRanges(int, int) | |
| 4486 * @see #setStyleRanges(int[], StyleRange[]) | |
| 4487 */ | |
| 4488 public StyleRange[] getStyleRanges(bool includeRanges) { | |
| 4489 checkWidget(); | |
| 4490 return getStyleRanges(0, content.getCharCount(), includeRanges); | |
| 4491 } | |
| 4492 /** | |
| 4493 * Returns the styles for the given text range. | |
| 4494 * <p> | |
| 4495 * Returns an empty array if a LineStyleListener has been set. | |
| 4496 * Should not be called if a LineStyleListener has been set since the | |
| 4497 * listener maintains the styles. | |
| 4498 * </p><p> | |
| 4499 * Note: Because the StyleRange includes the start and length, the | |
| 4500 * same instance cannot occur multiple times in the array of styles. | |
| 4501 * If the same style attributes, such as font and color, occur in | |
| 4502 * multiple StyleRanges, <code>getStyleRanges(int, int, bool)</code> | |
| 4503 * can be used to get the styles without the ranges. | |
| 4504 * </p> | |
| 4505 * @param start the start offset of the style ranges to return | |
| 4506 * @param length the number of style ranges to return | |
| 4507 * | |
| 4508 * @return the styles or an empty array if a LineStyleListener has | |
| 4509 * been set. The returned styles will reflect the given range. The first | |
| 4510 * returned <code>StyleRange</code> will have a starting offset >= start | |
| 4511 * and the last returned <code>StyleRange</code> will have an ending | |
| 4512 * offset <= start + length - 1 | |
| 4513 * | |
| 4514 * @exception DWTException <ul> | |
| 4515 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4516 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4517 * </ul> | |
| 4518 * @exception IllegalArgumentException <ul> | |
| 4519 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4520 * </ul> | |
| 4521 * | |
| 4522 * @see #getStyleRanges(int, int, bool) | |
| 4523 * | |
| 4524 * @since 3.0 | |
| 4525 */ | |
| 4526 public StyleRange[] getStyleRanges(int start, int length) { | |
| 4527 checkWidget(); | |
| 4528 return getStyleRanges(start, length, true); | |
| 4529 } | |
| 4530 /** | |
| 4531 * Returns the styles for the given text range. | |
| 4532 * <p> | |
| 4533 * Returns an empty array if a LineStyleListener has been set. | |
| 4534 * Should not be called if a LineStyleListener has been set since the | |
| 4535 * listener maintains the styles. | |
| 4536 * </p><p> | |
| 4537 * Note: When <code>includeRanges</code> is true, the start and length | |
| 4538 * fields of each StyleRange will be valid, however the StyleRange | |
| 4539 * objects may need to be cloned. When <code>includeRanges</code> is | |
| 4540 * false, <code>getRanges(int, int)</code> can be used to get the | |
| 4541 * associated ranges. | |
| 4542 * </p> | |
| 4543 * | |
| 4544 * @param start the start offset of the style ranges to return | |
| 4545 * @param length the number of style ranges to return | |
| 4546 * @param includeRanges whether the start and length field of the StyleRanges should be set. | |
| 4547 * | |
| 4548 * @return the styles or an empty array if a LineStyleListener has | |
| 4549 * been set. The returned styles will reflect the given range. The first | |
| 4550 * returned <code>StyleRange</code> will have a starting offset >= start | |
| 4551 * and the last returned <code>StyleRange</code> will have an ending | |
| 4552 * offset <= start + length - 1 | |
| 4553 * | |
| 4554 * @exception DWTException <ul> | |
| 4555 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4556 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4557 * </ul> | |
| 4558 * @exception IllegalArgumentException <ul> | |
| 4559 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4560 * </ul> | |
| 4561 * | |
| 4562 * @since 3.2 | |
| 4563 * | |
| 4564 * @see #getRanges(int, int) | |
| 4565 * @see #setStyleRanges(int[], StyleRange[]) | |
| 4566 */ | |
| 4567 public StyleRange[] getStyleRanges(int start, int length, bool includeRanges) { | |
| 4568 checkWidget(); | |
| 4569 int contentLength = getCharCount(); | |
| 4570 int end = start + length; | |
| 4571 if (start > end || start < 0 || end > contentLength) { | |
| 4572 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 4573 } | |
| 4574 if (!isListening(LineGetStyle)) { | |
| 4575 StyleRange[] ranges = renderer.getStyleRanges(start, length, includeRanges); | |
| 4576 if (ranges !is null) return ranges; | |
| 4577 } | |
| 4578 return new StyleRange[0]; | |
| 4579 } | |
| 4580 /** | |
| 4581 * Returns the tab width measured in characters. | |
| 4582 * | |
| 4583 * @return tab width measured in characters | |
| 4584 * @exception DWTException <ul> | |
| 4585 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4586 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4587 * </ul> | |
| 4588 */ | |
| 4589 public int getTabs() { | |
| 4590 checkWidget(); | |
| 4591 return tabLength; | |
| 4592 } | |
| 4593 /** | |
| 4594 * Returns a copy of the widget content. | |
| 4595 * | |
| 4596 * @return copy of the widget content | |
| 4597 * @exception DWTException <ul> | |
| 4598 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4599 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4600 * </ul> | |
| 4601 */ | |
|
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4602 public String getText() { |
| 155 | 4603 checkWidget(); |
| 4604 return content.getTextRange(0, getCharCount()); | |
| 4605 } | |
| 4606 /** | |
| 4607 * Returns the widget content between the two offsets. | |
| 4608 * | |
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4609 * @param start offset of the first character in the returned String |
| 155 | 4610 * @param end offset of the last character in the returned String |
| 4611 * @return widget content starting at start and ending at end | |
| 4612 * @see #getTextRange(int,int) | |
| 4613 * @exception DWTException <ul> | |
| 4614 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4615 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4616 * </ul> | |
| 4617 * @exception IllegalArgumentException <ul> | |
| 4618 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4619 * </ul> | |
| 4620 */ | |
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4621 public String getText(int start, int end) { |
| 155 | 4622 checkWidget(); |
| 4623 int contentLength = getCharCount(); | |
| 4624 if (start < 0 || start >= contentLength || end < 0 || end >= contentLength || start > end) { | |
| 4625 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 4626 } | |
| 4627 return content.getTextRange(start, end - start + 1); | |
| 4628 } | |
| 4629 /** | |
| 4630 * Returns the smallest bounding rectangle that includes the characters between two offsets. | |
| 4631 * | |
| 4632 * @param start offset of the first character included in the bounding box | |
| 4633 * @param end offset of the last character included in the bounding box | |
| 4634 * @return bounding box of the text between start and end | |
| 4635 * @exception DWTException <ul> | |
| 4636 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4637 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4638 * </ul> | |
| 4639 * @exception IllegalArgumentException <ul> | |
| 4640 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 4641 * </ul> | |
| 4642 * @since 3.1 | |
| 4643 */ | |
| 4644 public Rectangle getTextBounds(int start, int end) { | |
| 4645 checkWidget(); | |
| 4646 int contentLength = getCharCount(); | |
| 4647 if (start < 0 || start >= contentLength || end < 0 || end >= contentLength || start > end) { | |
| 4648 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 4649 } | |
| 4650 int lineStart = content.getLineAtOffset(start); | |
| 4651 int lineEnd = content.getLineAtOffset(end); | |
| 4652 Rectangle rect; | |
| 4653 int y = getLinePixel(lineStart); | |
| 4654 int height = 0; | |
| 4655 int left = 0x7fffffff, right = 0; | |
| 4656 for (int i = lineStart; i <= lineEnd; i++) { | |
| 4657 int lineOffset = content.getOffsetAtLine(i); | |
| 4658 TextLayout layout = renderer.getTextLayout(i); | |
| 213 | 4659 int length = layout.getText().length; |
| 4660 if (length > 0) { | |
| 4661 if (i is lineStart) { | |
| 4662 if (i is lineEnd) { | |
| 4663 rect = layout.getBounds(start - lineOffset, end - lineOffset); | |
| 4664 } else { | |
| 4665 rect = layout.getBounds(start - lineOffset, length); | |
| 4666 } | |
| 4667 y += rect.y; | |
| 155 | 4668 } else if (i is lineEnd) { |
| 4669 rect = layout.getBounds(0, end - lineOffset); | |
| 4670 } else { | |
| 4671 rect = layout.getBounds(); | |
| 4672 } | |
| 4673 left = Math.min(left, rect.x); | |
| 4674 right = Math.max(right, rect.x + rect.width); | |
| 4675 height += rect.height; | |
| 4676 } else { | |
| 4677 height += renderer.getLineHeight(); | |
| 4678 } | |
| 4679 renderer.disposeTextLayout(layout); | |
| 4680 } | |
| 4681 rect = new Rectangle (left, y, right-left, height); | |
| 4682 rect.x += leftMargin - horizontalScrollOffset; | |
| 4683 return rect; | |
| 4684 } | |
| 4685 /** | |
| 4686 * Returns the widget content starting at start for length characters. | |
| 4687 * | |
| 4688 * @param start offset of the first character in the returned String | |
| 4689 * @param length number of characters to return | |
| 4690 * @return widget content starting at start and extending length characters. | |
| 4691 * @exception DWTException <ul> | |
| 4692 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4693 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4694 * </ul> | |
| 4695 * @exception IllegalArgumentException <ul> | |
| 4696 * <li>ERROR_INVALID_RANGE when start and/or length are outside the widget content</li> | |
| 4697 * </ul> | |
| 4698 */ | |
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4699 public String getTextRange(int start, int length) { |
| 155 | 4700 checkWidget(); |
| 4701 int contentLength = getCharCount(); | |
| 4702 int end = start + length; | |
| 4703 if (start > end || start < 0 || end > contentLength) { | |
| 4704 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 4705 } | |
| 4706 return content.getTextRange(start, length); | |
| 4707 } | |
| 4708 /** | |
| 4709 * Returns the maximum number of characters that the receiver is capable of holding. | |
| 4710 * | |
| 4711 * @return the text limit | |
| 4712 * | |
| 4713 * @exception DWTException <ul> | |
| 4714 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4715 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4716 * </ul> | |
| 4717 */ | |
| 4718 public int getTextLimit() { | |
| 4719 checkWidget(); | |
| 4720 return textLimit; | |
| 4721 } | |
| 4722 /** | |
| 4723 * Gets the top index. | |
| 4724 * <p> | |
| 4725 * The top index is the index of the fully visible line that is currently | |
| 4726 * at the top of the widget or the topmost partially visible line if no line is fully visible. | |
| 4727 * The top index changes when the widget is scrolled. Indexing is zero based. | |
| 4728 * </p> | |
| 4729 * | |
| 4730 * @return the index of the top line | |
| 4731 * @exception DWTException <ul> | |
| 4732 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4733 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4734 * </ul> | |
| 4735 */ | |
| 4736 public int getTopIndex() { | |
| 4737 checkWidget(); | |
| 4738 return topIndex; | |
| 4739 } | |
| 4740 /** | |
| 4741 * Gets the top pixel. | |
| 4742 * <p> | |
| 4743 * The top pixel is the pixel position of the line that is | |
| 4744 * currently at the top of the widget. The text widget can be scrolled by pixels | |
| 4745 * by dragging the scroll thumb so that a partial line may be displayed at the top | |
| 4746 * the widget. The top pixel changes when the widget is scrolled. The top pixel | |
| 4747 * does not include the widget trimming. | |
| 4748 * </p> | |
| 4749 * | |
| 4750 * @return pixel position of the top line | |
| 4751 * @exception DWTException <ul> | |
| 4752 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4753 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4754 * </ul> | |
| 4755 */ | |
| 4756 public int getTopPixel() { | |
| 4757 checkWidget(); | |
| 4758 return getVerticalScrollOffset(); | |
| 4759 } | |
| 4760 /** | |
| 4761 * Returns the vertical scroll increment. | |
| 4762 * | |
| 4763 * @return vertical scroll increment. | |
| 4764 */ | |
| 4765 int getVerticalIncrement() { | |
| 4766 return renderer.getLineHeight(); | |
| 4767 } | |
| 4768 int getVerticalScrollOffset() { | |
| 4769 if (verticalScrollOffset is -1) { | |
| 4770 renderer.calculate(0, topIndex); | |
| 4771 int height = 0; | |
| 4772 for (int i = 0; i < topIndex; i++) { | |
| 4773 height += renderer.getLineHeight(i); | |
| 4774 } | |
| 4775 height -= topIndexY; | |
| 4776 verticalScrollOffset = height; | |
| 4777 } | |
| 4778 return verticalScrollOffset; | |
| 4779 } | |
| 4780 int getVisualLineIndex(TextLayout layout, int offsetInLine) { | |
| 4781 int lineIndex = layout.getLineIndex(offsetInLine); | |
| 4782 int[] offsets = layout.getLineOffsets(); | |
| 4783 if (lineIndex !is 0 && offsetInLine is offsets[lineIndex]) { | |
| 4784 int lineY = layout.getLineBounds(lineIndex).y; | |
| 4785 int caretY = getCaret().getLocation().y - topMargin - getLinePixel(getCaretLine()); | |
| 4786 if (lineY > caretY) lineIndex--; | |
| 4787 } | |
| 4788 return lineIndex; | |
| 4789 } | |
| 4790 int getCaretDirection() { | |
| 4791 if (!isBidiCaret()) return DWT.DEFAULT; | |
| 213 | 4792 if (ime.getCompositionOffset() !is -1) return DWT.DEFAULT; |
| 155 | 4793 if (!updateCaretDirection && caretDirection !is DWT.NULL) return caretDirection; |
| 4794 updateCaretDirection = false; | |
| 4795 int caretLine = getCaretLine(); | |
| 4796 int lineOffset = content.getOffsetAtLine(caretLine); | |
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4797 String line = content.getLine(caretLine); |
| 155 | 4798 int offset = caretOffset - lineOffset; |
| 4799 int lineLength = line.length; | |
| 4800 if (lineLength is 0) return isMirrored() ? DWT.RIGHT : DWT.LEFT; | |
| 4801 if (caretAlignment is PREVIOUS_OFFSET_TRAILING && offset > 0) offset--; | |
| 4802 if (offset is lineLength && offset > 0) offset--; | |
| 4803 while (offset > 0 && tango.text.Unicode.isDigit(line[offset])) offset--; | |
| 4804 if (offset is 0 && tango.text.Unicode.isDigit(line[offset])) { | |
| 4805 return isMirrored() ? DWT.RIGHT : DWT.LEFT; | |
| 4806 } | |
| 4807 TextLayout layout = renderer.getTextLayout(caretLine); | |
| 4808 int level = layout.getLevel(offset); | |
| 4809 renderer.disposeTextLayout(layout); | |
| 4810 return ((level & 1) !is 0) ? DWT.RIGHT : DWT.LEFT; | |
| 4811 } | |
| 4812 /* | |
| 4813 * Returns the index of the line the caret is on. | |
| 4814 */ | |
| 4815 int getCaretLine() { | |
| 4816 return content.getLineAtOffset(caretOffset); | |
| 4817 } | |
| 4818 int getWrapWidth () { | |
| 4819 if (wordWrap && !isSingleLine()) { | |
| 213 | 4820 int width = clientAreaWidth - leftMargin - rightMargin - getCaretWidth(); |
| 155 | 4821 return width > 0 ? width : 1; |
| 4822 } | |
| 4823 return -1; | |
| 4824 } | |
| 4825 int getWordNext (int offset, int movement) { | |
| 4826 int newOffset, lineOffset; | |
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4827 String lineText; |
| 155 | 4828 if (offset >= getCharCount()) { |
| 4829 newOffset = offset; | |
| 4830 int lineIndex = content.getLineCount() - 1; | |
| 4831 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4832 lineText = content.getLine(lineIndex); | |
| 4833 } else { | |
| 4834 int lineIndex = content.getLineAtOffset(offset); | |
| 4835 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4836 lineText = content.getLine(lineIndex); | |
| 4837 int lineLength = lineText.length; | |
| 4838 if (offset is lineOffset + lineLength) { | |
| 4839 newOffset = content.getOffsetAtLine(lineIndex + 1); | |
| 4840 } else { | |
| 4841 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4842 newOffset = lineOffset + layout.getNextOffset(offset - lineOffset, movement); | |
| 4843 renderer.disposeTextLayout(layout); | |
| 4844 } | |
| 4845 } | |
| 4846 return sendWordBoundaryEvent(WordNext, movement, offset, newOffset, lineText, lineOffset); | |
| 4847 } | |
| 4848 int getWordPrevious(int offset, int movement) { | |
| 4849 int newOffset, lineOffset; | |
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4850 String lineText; |
| 155 | 4851 if (offset <= 0) { |
| 4852 newOffset = 0; | |
| 4853 int lineIndex = content.getLineAtOffset(newOffset); | |
| 4854 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4855 lineText = content.getLine(lineIndex); | |
| 4856 } else { | |
| 4857 int lineIndex = content.getLineAtOffset(offset); | |
| 4858 lineOffset = content.getOffsetAtLine(lineIndex); | |
| 4859 lineText = content.getLine(lineIndex); | |
| 4860 if (offset is lineOffset) { | |
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4861 String nextLineText = content.getLine(lineIndex - 1); |
| 155 | 4862 int nextLineOffset = content.getOffsetAtLine(lineIndex - 1); |
| 4863 newOffset = nextLineOffset + nextLineText.length; | |
| 4864 } else { | |
| 4865 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4866 newOffset = lineOffset + layout.getPreviousOffset(offset - lineOffset, movement); | |
| 4867 renderer.disposeTextLayout(layout); | |
| 4868 } | |
| 4869 } | |
| 4870 return sendWordBoundaryEvent(WordPrevious, movement, offset, newOffset, lineText, lineOffset); | |
| 4871 } | |
| 4872 /** | |
| 4873 * Returns whether the widget wraps lines. | |
| 4874 * | |
| 4875 * @return true if widget wraps lines, false otherwise | |
| 4876 * @since 2.0 | |
| 4877 */ | |
| 4878 public bool getWordWrap() { | |
| 4879 checkWidget(); | |
| 4880 return wordWrap; | |
| 4881 } | |
| 4882 /** | |
| 4883 * Returns the location of the given offset. | |
| 4884 * <p> | |
| 4885 * <b>NOTE:</b> Does not return correct values for true italic fonts (vs. slanted fonts). | |
| 4886 * </p> | |
| 4887 * | |
| 4888 * @return location of the character at the given offset in the line. | |
| 4889 */ | |
| 4890 Point getPointAtOffset(int offset) { | |
| 4891 int lineIndex = content.getLineAtOffset(offset); | |
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4892 String line = content.getLine(lineIndex); |
| 155 | 4893 int lineOffset = content.getOffsetAtLine(lineIndex); |
| 4894 int offsetInLine = offset - lineOffset; | |
| 4895 int lineLength = line.length; | |
| 4896 if (lineIndex < content.getLineCount() - 1) { | |
| 4897 int endLineOffset = content.getOffsetAtLine(lineIndex + 1) - 1; | |
| 4898 if (lineLength < offsetInLine && offsetInLine <= endLineOffset) { | |
| 4899 offsetInLine = lineLength; | |
| 4900 } | |
| 4901 } | |
| 4902 Point point; | |
| 4903 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 4904 if (lineLength !is 0 && offsetInLine <= lineLength) { | |
| 4905 if (offsetInLine is lineLength) { | |
| 4906 point = layout.getLocation(offsetInLine - 1, true); | |
| 4907 } else { | |
| 4908 switch (caretAlignment) { | |
| 4909 case OFFSET_LEADING: | |
| 4910 point = layout.getLocation(offsetInLine, false); | |
| 4911 break; | |
| 4912 case PREVIOUS_OFFSET_TRAILING: | |
| 4913 default: | |
| 4914 if (offsetInLine is 0) { | |
| 4915 point = layout.getLocation(offsetInLine, false); | |
| 4916 } else { | |
| 4917 point = layout.getLocation(offsetInLine - 1, true); | |
| 4918 } | |
| 4919 break; | |
| 4920 } | |
| 4921 } | |
| 4922 } else { | |
| 4923 point = new Point(layout.getIndent(), 0); | |
| 4924 } | |
| 4925 renderer.disposeTextLayout(layout); | |
| 4926 point.x += leftMargin - horizontalScrollOffset; | |
| 4927 point.y += getLinePixel(lineIndex); | |
| 4928 return point; | |
| 4929 } | |
| 4930 /** | |
| 4931 * Inserts a string. The old selection is replaced with the new text. | |
| 4932 * | |
| 4933 * @param string the string | |
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4934 * @see #replaceTextRange(int,int,String) |
| 155 | 4935 * @exception DWTException <ul> |
| 4936 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 4937 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 4938 * </ul> | |
| 4939 * @exception IllegalArgumentException <ul> | |
| 4940 * <li>ERROR_NULL_ARGUMENT when string is null</li> | |
| 4941 * </ul> | |
| 4942 */ | |
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4943 public void insert(String string) { |
| 155 | 4944 checkWidget(); |
| 4945 if (string is null) { | |
| 4946 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 4947 } | |
| 4948 Point sel = getSelectionRange(); | |
| 4949 replaceTextRange(sel.x, sel.y, string); | |
| 4950 } | |
| 4951 /** | |
| 4952 * Creates content change listeners and set the default content model. | |
| 4953 */ | |
| 4954 void installDefaultContent() { | |
| 4955 textChangeListener = new class() TextChangeListener { | |
| 4956 public void textChanging(TextChangingEvent event) { | |
| 4957 handleTextChanging(event); | |
| 4958 } | |
| 4959 public void textChanged(TextChangedEvent event) { | |
| 4960 handleTextChanged(event); | |
| 4961 } | |
| 4962 public void textSet(TextChangedEvent event) { | |
| 4963 handleTextSet(event); | |
| 4964 } | |
| 4965 }; | |
| 4966 content = new DefaultContent(); | |
| 4967 content.addTextChangeListener(textChangeListener); | |
| 4968 } | |
| 4969 /** | |
| 4970 * Adds event listeners | |
| 4971 */ | |
| 4972 void installListeners() { | |
| 4973 ScrollBar verticalBar = getVerticalBar(); | |
| 4974 ScrollBar horizontalBar = getHorizontalBar(); | |
| 4975 | |
| 4976 listener = new class() Listener { | |
| 4977 public void handleEvent(Event event) { | |
| 4978 switch (event.type) { | |
| 4979 case DWT.Dispose: handleDispose(event); break; | |
| 4980 case DWT.KeyDown: handleKeyDown(event); break; | |
| 4981 case DWT.KeyUp: handleKeyUp(event); break; | |
| 4982 case DWT.MouseDown: handleMouseDown(event); break; | |
| 4983 case DWT.MouseUp: handleMouseUp(event); break; | |
| 4984 case DWT.MouseMove: handleMouseMove(event); break; | |
| 4985 case DWT.Paint: handlePaint(event); break; | |
| 4986 case DWT.Resize: handleResize(event); break; | |
| 4987 case DWT.Traverse: handleTraverse(event); break; | |
| 4988 default: | |
| 4989 } | |
| 4990 } | |
| 4991 }; | |
| 4992 addListener(DWT.Dispose, listener); | |
| 4993 addListener(DWT.KeyDown, listener); | |
| 4994 addListener(DWT.KeyUp, listener); | |
| 4995 addListener(DWT.MouseDown, listener); | |
| 4996 addListener(DWT.MouseUp, listener); | |
| 4997 addListener(DWT.MouseMove, listener); | |
| 4998 addListener(DWT.Paint, listener); | |
| 4999 addListener(DWT.Resize, listener); | |
| 5000 addListener(DWT.Traverse, listener); | |
| 213 | 5001 ime.addListener(DWT.ImeComposition, new class () Listener { |
| 5002 public void handleEvent(Event event) { | |
| 5003 switch (event.detail) { | |
| 5004 case DWT.COMPOSITION_SELECTION: handleCompositionSelection(event); break; | |
| 5005 case DWT.COMPOSITION_CHANGED: handleCompositionChanged(event); break; | |
| 5006 case DWT.COMPOSITION_OFFSET: handleCompositionOffset(event); break; | |
|
214
a8fed3e56433
Fix link error and added missing switch defaults
Frank Benoit <benoit@tionex.de>
parents:
213
diff
changeset
|
5007 default: |
| 213 | 5008 } |
| 5009 } | |
| 5010 }); | |
| 155 | 5011 if (verticalBar !is null) { |
| 5012 verticalBar.addListener(DWT.Selection, new class() Listener { | |
| 5013 public void handleEvent(Event event) { | |
| 5014 handleVerticalScroll(event); | |
| 5015 } | |
| 5016 }); | |
| 5017 } | |
| 5018 if (horizontalBar !is null) { | |
| 5019 horizontalBar.addListener(DWT.Selection, new class() Listener { | |
| 5020 public void handleEvent(Event event) { | |
| 5021 handleHorizontalScroll(event); | |
| 5022 } | |
| 5023 }); | |
| 5024 } | |
| 5025 } | |
| 5026 void internalRedrawRange(int start, int length) { | |
| 5027 if (length <= 0) return; | |
| 5028 int end = start + length; | |
| 5029 int startLine = content.getLineAtOffset(start); | |
| 5030 int endLine = content.getLineAtOffset(end); | |
| 5031 int partialBottomIndex = getPartialBottomIndex(); | |
| 5032 int partialTopIndex = getPartialTopIndex(); | |
| 5033 if (startLine > partialBottomIndex || endLine < partialTopIndex) { | |
| 5034 return; | |
| 5035 } | |
| 5036 if (partialTopIndex > startLine) { | |
| 5037 startLine = partialTopIndex; | |
| 5038 start = 0; | |
| 5039 } else { | |
| 5040 start -= content.getOffsetAtLine(startLine); | |
| 5041 } | |
| 5042 if (partialBottomIndex < endLine) { | |
| 5043 endLine = partialBottomIndex + 1; | |
| 5044 end = 0; | |
| 5045 } else { | |
| 5046 end -= content.getOffsetAtLine(endLine); | |
| 5047 } | |
| 5048 | |
| 5049 TextLayout layout = renderer.getTextLayout(startLine); | |
| 5050 int lineX = leftMargin - horizontalScrollOffset, startLineY = getLinePixel(startLine); | |
| 5051 int[] offsets = layout.getLineOffsets(); | |
| 5052 int startIndex = layout.getLineIndex(Math.min(start, layout.getText().length)); | |
| 5053 | |
| 5054 /* Redraw end of line before start line if wrapped and start offset is first char */ | |
| 5055 if (wordWrap && startIndex > 0 && offsets[startIndex] is start) { | |
| 5056 Rectangle rect = layout.getLineBounds(startIndex - 1); | |
| 5057 rect.x = rect.width; | |
| 5058 rect.width = clientAreaWidth - rightMargin - rect.x; | |
| 5059 rect.x += lineX; | |
| 5060 rect.y += startLineY; | |
| 5061 super.redraw(rect.x, rect.y, rect.width, rect.height, false); | |
| 5062 } | |
| 5063 | |
| 5064 if (startLine is endLine) { | |
| 5065 int endIndex = layout.getLineIndex(Math.min(end, layout.getText().length)); | |
| 5066 if (startIndex is endIndex) { | |
| 5067 /* Redraw rect between start and end offset if start and end offsets are in same wrapped line */ | |
| 5068 Rectangle rect = layout.getBounds(start, end - 1); | |
| 5069 rect.x += lineX; | |
| 5070 rect.y += startLineY; | |
| 5071 super.redraw(rect.x, rect.y, rect.width, rect.height, false); | |
| 5072 renderer.disposeTextLayout(layout); | |
| 5073 return; | |
| 5074 } | |
| 5075 } | |
| 5076 | |
| 5077 /* Redraw start line from the start offset to the end of client area */ | |
| 5078 Rectangle startRect = layout.getBounds(start, offsets[startIndex + 1] - 1); | |
| 5079 if (startRect.height is 0) { | |
| 5080 Rectangle bounds = layout.getLineBounds(startIndex); | |
| 5081 startRect.x = bounds.width; | |
| 5082 startRect.y = bounds.y; | |
| 5083 startRect.height = bounds.height; | |
| 5084 } | |
| 5085 startRect.x += lineX; | |
| 5086 startRect.y += startLineY; | |
| 5087 startRect.width = clientAreaWidth - rightMargin - startRect.x; | |
| 5088 super.redraw(startRect.x, startRect.y, startRect.width, startRect.height, false); | |
| 5089 | |
| 5090 /* Redraw end line from the beginning of the line to the end offset */ | |
| 5091 if (startLine !is endLine) { | |
| 5092 renderer.disposeTextLayout(layout); | |
| 5093 layout = renderer.getTextLayout(endLine); | |
| 5094 offsets = layout.getLineOffsets(); | |
| 5095 } | |
| 5096 int endIndex = layout.getLineIndex(Math.min(end, layout.getText().length)); | |
| 5097 Rectangle endRect = layout.getBounds(offsets[endIndex], end - 1); | |
| 5098 if (endRect.height is 0) { | |
| 5099 Rectangle bounds = layout.getLineBounds(endIndex); | |
| 5100 endRect.y = bounds.y; | |
| 5101 endRect.height = bounds.height; | |
| 5102 } | |
| 5103 endRect.x += lineX; | |
| 5104 endRect.y += getLinePixel(endLine); | |
| 5105 super.redraw(endRect.x, endRect.y, endRect.width, endRect.height, false); | |
| 5106 renderer.disposeTextLayout(layout); | |
| 5107 | |
| 5108 /* Redraw all lines in between start and end line */ | |
| 5109 int y = startRect.y + startRect.height; | |
| 5110 if (endRect.y > y) { | |
| 5111 super.redraw(leftMargin, y, clientAreaWidth - rightMargin - leftMargin, endRect.y - y, false); | |
| 5112 } | |
| 5113 } | |
| 213 | 5114 void handleCompositionOffset (Event event) { |
| 5115 int[] trailing = new int [1]; | |
| 5116 event.index = getOffsetAtPoint(event.x, event.y, trailing, true); | |
| 5117 event.count = trailing[0]; | |
| 5118 } | |
| 5119 void handleCompositionSelection (Event event) { | |
| 5120 event.start = selection.x; | |
| 5121 event.end = selection.y; | |
| 5122 event.text = getSelectionText(); | |
| 5123 } | |
| 5124 void handleCompositionChanged(Event event) { | |
| 5125 String text = event.text; | |
| 5126 int start = event.start; | |
| 5127 int end = event.end; | |
| 5128 int length = text.length; | |
| 5129 if (length is ime.getCommitCount()) { | |
| 5130 content.replaceTextRange(start, end - start, ""); | |
| 5131 caretOffset = start; | |
| 5132 caretWidth = 0; | |
| 5133 caretDirection = DWT.NULL; | |
| 5134 } else { | |
| 5135 content.replaceTextRange(start, end - start, text); | |
| 5136 caretOffset = ime.getCaretOffset(); | |
| 5137 if (ime.getWideCaret()) { | |
| 5138 int lineIndex = getCaretLine(); | |
| 5139 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 5140 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 5141 caretWidth = layout.getBounds(start - lineOffset, start + length - 1 - lineOffset).width; | |
| 5142 renderer.disposeTextLayout(layout); | |
| 5143 } | |
| 5144 } | |
| 5145 showCaret(); | |
| 5146 } | |
| 155 | 5147 /** |
| 5148 * Frees resources. | |
| 5149 */ | |
| 5150 void handleDispose(Event event) { | |
| 5151 removeListener(DWT.Dispose, listener); | |
| 5152 notifyListeners(DWT.Dispose, event); | |
| 5153 event.type = DWT.None; | |
| 5154 | |
| 5155 clipboard.dispose(); | |
| 5156 if (renderer !is null) { | |
| 5157 renderer.dispose(); | |
| 5158 renderer = null; | |
| 5159 } | |
| 5160 if (content !is null) { | |
| 5161 content.removeTextChangeListener(textChangeListener); | |
| 5162 content = null; | |
| 5163 } | |
| 5164 if (defaultCaret !is null) { | |
| 5165 defaultCaret.dispose(); | |
| 5166 defaultCaret = null; | |
| 5167 } | |
| 5168 if (leftCaretBitmap !is null) { | |
| 5169 leftCaretBitmap.dispose(); | |
| 5170 leftCaretBitmap = null; | |
| 5171 } | |
| 5172 if (rightCaretBitmap !is null) { | |
| 5173 rightCaretBitmap.dispose(); | |
| 5174 rightCaretBitmap = null; | |
| 5175 } | |
| 5176 if (isBidiCaret()) { | |
| 213 | 5177 BidiUtil.removeLanguageListener(this); |
| 155 | 5178 } |
| 5179 selectionBackground = null; | |
| 5180 selectionForeground = null; | |
| 5181 textChangeListener = null; | |
| 5182 selection = null; | |
| 5183 doubleClickSelection = null; | |
| 5184 keyActionMap = null; | |
| 5185 background = null; | |
| 5186 foreground = null; | |
| 5187 clipboard = null; | |
| 5188 } | |
| 5189 /** | |
| 5190 * Scrolls the widget horizontally. | |
| 5191 */ | |
| 5192 void handleHorizontalScroll(Event event) { | |
| 5193 int scrollPixel = getHorizontalBar().getSelection() - horizontalScrollOffset; | |
| 5194 scrollHorizontal(scrollPixel, false); | |
| 5195 } | |
| 5196 /** | |
| 5197 * If an action has been registered for the key stroke execute the action. | |
| 5198 * Otherwise, if a character has been entered treat it as new content. | |
| 5199 * | |
| 5200 * @param event keyboard event | |
| 5201 */ | |
| 5202 void handleKey(Event event) { | |
| 5203 int action; | |
| 5204 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 5205 if (event.keyCode !is 0) { | |
| 5206 // special key pressed (e.g., F1) | |
| 5207 action = getKeyBinding(event.keyCode | event.stateMask); | |
| 5208 } else { | |
| 5209 // character key pressed | |
| 5210 action = getKeyBinding(event.character | event.stateMask); | |
| 5211 if (action is DWT.NULL) { | |
| 5212 // see if we have a control character | |
| 5213 if ((event.stateMask & DWT.CTRL) !is 0 && (event.character >= 0) && event.character <= 31) { | |
| 5214 // get the character from the CTRL+char sequence, the control | |
| 5215 // key subtracts 64 from the value of the key that it modifies | |
| 5216 int c = event.character + 64; | |
| 5217 action = getKeyBinding(c | event.stateMask); | |
| 5218 } | |
| 5219 } | |
| 5220 } | |
| 5221 if (action is DWT.NULL) { | |
| 5222 bool ignore = false; | |
| 5223 | |
| 5224 if (IS_CARBON) { | |
| 5225 // Ignore accelerator key combinations (we do not want to | |
| 5226 // insert a character in the text in this instance). Do not | |
| 5227 // ignore COMMAND+ALT combinations since that key sequence | |
| 5228 // produces characters on the mac. | |
| 5229 ignore = (event.stateMask ^ DWT.COMMAND) is 0 || | |
| 5230 (event.stateMask ^ (DWT.COMMAND | DWT.SHIFT)) is 0; | |
| 5231 } else if (IS_MOTIF) { | |
| 5232 // Ignore accelerator key combinations (we do not want to | |
| 5233 // insert a character in the text in this instance). Do not | |
| 5234 // ignore ALT combinations since this key sequence | |
| 5235 // produces characters on motif. | |
| 5236 ignore = (event.stateMask ^ DWT.CTRL) is 0 || | |
| 5237 (event.stateMask ^ (DWT.CTRL | DWT.SHIFT)) is 0; | |
| 5238 } else { | |
| 5239 // Ignore accelerator key combinations (we do not want to | |
| 5240 // insert a character in the text in this instance). Don't | |
| 5241 // ignore CTRL+ALT combinations since that is the Alt Gr | |
| 5242 // key on some keyboards. See bug 20953. | |
| 5243 ignore = (event.stateMask ^ DWT.ALT) is 0 || | |
| 5244 (event.stateMask ^ DWT.CTRL) is 0 || | |
| 5245 (event.stateMask ^ (DWT.ALT | DWT.SHIFT)) is 0 || | |
| 5246 (event.stateMask ^ (DWT.CTRL | DWT.SHIFT)) is 0; | |
| 5247 } | |
| 5248 // -ignore anything below SPACE except for line delimiter keys and tab. | |
| 5249 // -ignore DEL | |
| 5250 if (!ignore && event.character > 31 && event.character !is DWT.DEL || | |
| 5251 event.character is DWT.CR || event.character is DWT.LF || | |
| 5252 event.character is TAB) { | |
| 5253 doContent(event.character); | |
| 5254 update(); | |
| 5255 } | |
| 5256 } else { | |
| 5257 invokeAction(action); | |
| 5258 } | |
| 5259 } | |
| 5260 /** | |
| 5261 * If a VerifyKey listener exists, verify that the key that was entered | |
| 5262 * should be processed. | |
| 5263 * | |
| 5264 * @param event keyboard event | |
| 5265 */ | |
| 5266 void handleKeyDown(Event event) { | |
| 5267 if (clipboardSelection is null) { | |
| 5268 clipboardSelection = new Point(selection.x, selection.y); | |
| 5269 } | |
| 5270 | |
| 5271 Event verifyEvent = new Event(); | |
| 5272 verifyEvent.character = event.character; | |
| 5273 verifyEvent.keyCode = event.keyCode; | |
| 5274 verifyEvent.stateMask = event.stateMask; | |
| 5275 verifyEvent.doit = true; | |
| 5276 notifyListeners(VerifyKey, verifyEvent); | |
| 5277 if (verifyEvent.doit) { | |
| 5278 handleKey(event); | |
| 5279 } | |
| 5280 } | |
| 5281 /** | |
| 5282 * Update the Selection Clipboard. | |
| 5283 * | |
| 5284 * @param event keyboard event | |
| 5285 */ | |
| 5286 void handleKeyUp(Event event) { | |
| 5287 if (clipboardSelection !is null) { | |
| 5288 if (clipboardSelection.x !is selection.x || clipboardSelection.y !is selection.y) { | |
| 5289 try { | |
| 5290 if (selection.y - selection.x > 0) { | |
| 5291 setClipboardContent(selection.x, selection.y - selection.x, DND.SELECTION_CLIPBOARD); | |
| 5292 } | |
| 5293 } catch (DWTError error) { | |
| 5294 // Copy to clipboard failed. This happens when another application | |
| 5295 // is accessing the clipboard while we copy. Ignore the error. | |
| 5296 // Fixes 1GDQAVN | |
| 5297 // Rethrow all other errors. Fixes bug 17578. | |
| 5298 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 5299 throw error; | |
| 5300 } | |
| 5301 } | |
| 5302 } | |
| 5303 } | |
| 5304 clipboardSelection = null; | |
| 5305 } | |
| 5306 /** | |
| 5307 * Updates the caret location and selection if mouse button 1 has been | |
| 5308 * pressed. | |
| 5309 */ | |
| 5310 void handleMouseDown(Event event) { | |
| 5311 //force focus (object support) | |
| 5312 forceFocus(); | |
| 5313 | |
| 5314 //drag detect | |
| 5315 if (dragDetect_ && checkDragDetect(event)) return; | |
| 5316 | |
| 5317 //paste clipboard selection | |
| 5318 if (event.button is 2) { | |
| 5319 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
|
5320 String text = o.array; |
| 155 | 5321 if (text !is null && text.length > 0) { |
| 5322 // position cursor | |
| 5323 doMouseLocationChange(event.x, event.y, false); | |
| 5324 // insert text | |
| 5325 Event e = new Event(); | |
| 5326 e.start = selection.x; | |
| 5327 e.end = selection.y; | |
| 5328 e.text = getModelDelimitedText(text); | |
| 5329 sendKeyEvent(e); | |
| 5330 } | |
| 5331 } | |
| 5332 | |
| 5333 //set selection | |
| 5334 if ((event.button !is 1) || (IS_CARBON && (event.stateMask & DWT.MOD4) !is 0)) { | |
| 5335 return; | |
| 5336 } | |
| 5337 clickCount = event.count; | |
| 5338 if (clickCount is 1) { | |
| 5339 bool select = (event.stateMask & DWT.MOD2) !is 0; | |
| 5340 doMouseLocationChange(event.x, event.y, select); | |
| 5341 } else { | |
| 5342 if (doubleClickEnabled) { | |
| 5343 clearSelection(false); | |
| 5344 int offset = getOffsetAtPoint(event.x, event.y); | |
| 5345 int lineIndex = content.getLineAtOffset(offset); | |
| 5346 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 5347 int lineEnd = content.getCharCount(); | |
| 5348 if (lineIndex + 1 < content.getLineCount()) { | |
| 5349 lineEnd = content.getOffsetAtLine(lineIndex + 1); | |
| 5350 } | |
| 5351 int start, end; | |
| 5352 if ((clickCount & 1) is 0) { | |
| 5353 start = Math.max(0, getWordPrevious(offset, DWT.MOVEMENT_WORD_START)); | |
| 5354 end = Math.min(content.getCharCount(), getWordNext(start, DWT.MOVEMENT_WORD_END)); | |
| 5355 } else { | |
| 5356 start = lineOffset; | |
| 5357 end = lineEnd; | |
| 5358 } | |
| 213 | 5359 caretOffset = start; |
| 5360 resetSelection(); | |
| 155 | 5361 caretOffset = end; |
| 5362 showCaret(); | |
| 5363 doMouseSelection(); | |
| 5364 doubleClickSelection = new Point(selection.x, selection.y); | |
| 5365 } | |
| 5366 } | |
| 5367 } | |
| 5368 /** | |
| 5369 * Updates the caret location and selection if mouse button 1 is pressed | |
| 5370 * during the mouse move. | |
| 5371 */ | |
| 5372 void handleMouseMove(Event event) { | |
| 5373 if (clickCount is 0) return; | |
| 5374 doMouseLocationChange(event.x, event.y, true); | |
| 5375 update(); | |
| 5376 doAutoScroll(event); | |
| 5377 } | |
| 5378 /** | |
| 5379 * Autoscrolling ends when the mouse button is released. | |
| 5380 */ | |
| 5381 void handleMouseUp(Event event) { | |
| 5382 clickCount = 0; | |
| 5383 endAutoScroll(); | |
| 5384 if (event.button is 1) { | |
| 5385 try { | |
| 5386 if (selection.y - selection.x > 0) { | |
| 5387 setClipboardContent(selection.x, selection.y - selection.x, DND.SELECTION_CLIPBOARD); | |
| 5388 } | |
| 5389 } catch (DWTError error) { | |
| 5390 // Copy to clipboard failed. This happens when another application | |
| 5391 // is accessing the clipboard while we copy. Ignore the error. | |
| 5392 // Fixes 1GDQAVN | |
| 5393 // Rethrow all other errors. Fixes bug 17578. | |
| 5394 if (error.code !is DND.ERROR_CANNOT_SET_CLIPBOARD) { | |
| 5395 throw error; | |
| 5396 } | |
| 5397 } | |
| 5398 } | |
| 5399 } | |
| 5400 /** | |
| 5401 * Renders the invalidated area specified in the paint event. | |
| 5402 * | |
| 5403 * @param event paint event | |
| 5404 */ | |
| 5405 void handlePaint(Event event) { | |
| 5406 if (event.width is 0 || event.height is 0) return; | |
| 5407 if (clientAreaWidth is 0 || clientAreaHeight is 0) return; | |
| 5408 | |
| 5409 int startLine = getLineIndex(event.y); | |
| 5410 int y = getLinePixel(startLine); | |
| 5411 int endY = event.y + event.height; | |
| 5412 GC gc = event.gc; | |
| 5413 Color background = getBackground(); | |
| 5414 Color foreground = getForeground(); | |
| 5415 if (endY > 0) { | |
| 5416 int lineCount = isSingleLine() ? 1 : content.getLineCount(); | |
| 5417 int x = leftMargin - horizontalScrollOffset; | |
| 5418 for (int i = startLine; y < endY && i < lineCount; i++) { | |
| 5419 y += renderer.drawLine(i, x, y, gc, background, foreground); | |
| 5420 } | |
| 5421 if (y < endY) { | |
| 5422 gc.setBackground(background); | |
| 5423 drawBackground(gc, 0, y, clientAreaWidth, endY - y); | |
| 5424 } | |
| 5425 } | |
| 5426 // fill the margin background | |
| 5427 gc.setBackground(background); | |
| 5428 if (topMargin > 0) { | |
| 5429 drawBackground(gc, 0, 0, clientAreaWidth, topMargin); | |
| 5430 } | |
| 5431 if (bottomMargin > 0) { | |
| 5432 drawBackground(gc, 0, clientAreaHeight - bottomMargin, clientAreaWidth, bottomMargin); | |
| 5433 } | |
| 5434 if (leftMargin > 0) { | |
| 5435 drawBackground(gc, 0, 0, leftMargin, clientAreaHeight); | |
| 5436 } | |
| 5437 if (rightMargin > 0) { | |
| 5438 drawBackground(gc, clientAreaWidth - rightMargin, 0, rightMargin, clientAreaHeight); | |
| 5439 } | |
| 5440 } | |
| 5441 /** | |
| 5442 * Recalculates the scroll bars. Rewraps all lines when in word | |
| 5443 * wrap mode. | |
| 5444 * | |
| 5445 * @param event resize event | |
| 5446 */ | |
| 5447 void handleResize(Event event) { | |
| 5448 int oldHeight = clientAreaHeight; | |
| 5449 int oldWidth = clientAreaWidth; | |
| 5450 Rectangle clientArea = getClientArea(); | |
| 5451 clientAreaHeight = clientArea.height; | |
| 5452 clientAreaWidth = clientArea.width; | |
| 5453 /* Redraw the old or new right/bottom margin if needed */ | |
| 5454 if (oldWidth !is clientAreaWidth) { | |
| 5455 if (rightMargin > 0) { | |
| 5456 int x = (oldWidth < clientAreaWidth ? oldWidth : clientAreaWidth) - rightMargin; | |
| 5457 super.redraw(x, 0, rightMargin, oldHeight, false); | |
| 5458 } | |
| 5459 } | |
| 5460 if (oldHeight !is clientAreaHeight) { | |
| 5461 if (bottomMargin > 0) { | |
| 5462 int y = (oldHeight < clientAreaHeight ? oldHeight : clientAreaHeight) - bottomMargin; | |
| 5463 super.redraw(0, y, oldWidth, bottomMargin, false); | |
| 5464 } | |
| 5465 } | |
| 5466 if (wordWrap) { | |
| 5467 if (oldWidth !is clientAreaWidth) { | |
| 5468 renderer.reset(0, content.getLineCount()); | |
| 5469 verticalScrollOffset = -1; | |
| 5470 renderer.calculateIdle(); | |
| 5471 super.redraw(); | |
| 5472 } | |
| 5473 if (oldHeight !is clientAreaHeight) { | |
| 5474 if (oldHeight is 0) topIndexY = 0; | |
| 5475 setScrollBars(true); | |
| 5476 } | |
| 5477 setCaretLocation(); | |
| 5478 } else { | |
| 5479 renderer.calculateClientArea(); | |
| 5480 setScrollBars(true); | |
| 5481 claimRightFreeSpace(); | |
| 5482 // StyledText allows any value for horizontalScrollOffset when clientArea is zero | |
| 5483 // in setHorizontalPixel() and setHorisontalOffset(). Fixes bug 168429. | |
| 5484 if (clientAreaWidth !is 0) { | |
| 5485 ScrollBar horizontalBar = getHorizontalBar(); | |
| 5486 if (horizontalBar !is null && horizontalBar.getVisible()) { | |
| 5487 if (horizontalScrollOffset !is horizontalBar.getSelection()) { | |
| 5488 horizontalBar.setSelection(horizontalScrollOffset); | |
| 5489 horizontalScrollOffset = horizontalBar.getSelection(); | |
| 5490 } | |
| 5491 } | |
| 5492 } | |
| 5493 } | |
| 5494 claimBottomFreeSpace(); | |
| 5495 //TODO FIX TOP INDEX DURING RESIZE | |
| 5496 // if (oldHeight !is clientAreaHeight || wordWrap) { | |
| 5497 // calculateTopIndex(0); | |
| 5498 // } | |
| 5499 } | |
| 5500 /** | |
| 5501 * Updates the caret position and selection and the scroll bars to reflect | |
| 5502 * the content change. | |
| 5503 */ | |
| 5504 void handleTextChanged(TextChangedEvent event) { | |
| 213 | 5505 int offset = ime.getCompositionOffset(); |
| 5506 if (offset !is -1 && lastTextChangeStart < offset) { | |
| 5507 ime.setCompositionOffset(offset + lastTextChangeNewCharCount - lastTextChangeReplaceCharCount); | |
| 5508 } | |
| 155 | 5509 int firstLine = content.getLineAtOffset(lastTextChangeStart); |
| 5510 resetCache(firstLine, 0); | |
| 5511 if (!isFixedLineHeight() && topIndex > firstLine) { | |
| 5512 topIndex = firstLine; | |
| 5513 topIndexY = 0; | |
| 5514 super.redraw(); | |
| 5515 } else { | |
| 5516 int lastLine = firstLine + lastTextChangeNewLineCount; | |
| 5517 int firstLineTop = getLinePixel(firstLine); | |
| 5518 int newLastLineBottom = getLinePixel(lastLine + 1); | |
| 5519 if (lastLineBottom !is newLastLineBottom) { | |
| 5520 super.redraw(); | |
| 5521 if (wordWrap) setCaretLocation(); | |
| 5522 } else { | |
| 5523 super.redraw(0, firstLineTop, clientAreaWidth, newLastLineBottom - firstLineTop, false); | |
| 5524 redrawLinesBullet(renderer.redrawLines); | |
| 5525 } | |
| 5526 } | |
| 5527 renderer.redrawLines = null; | |
| 5528 // update selection/caret location after styles have been changed. | |
| 5529 // otherwise any text measuring could be incorrect | |
| 5530 // | |
| 5531 // also, this needs to be done after all scrolling. Otherwise, | |
| 5532 // selection redraw would be flushed during scroll which is wrong. | |
| 5533 // in some cases new text would be drawn in scroll source area even | |
| 5534 // though the intent is to scroll it. | |
| 5535 updateSelection(lastTextChangeStart, lastTextChangeReplaceCharCount, lastTextChangeNewCharCount); | |
| 5536 if (lastTextChangeReplaceLineCount > 0 || wordWrap) { | |
| 5537 claimBottomFreeSpace(); | |
| 5538 } | |
| 5539 if (lastTextChangeReplaceCharCount > 0) { | |
| 5540 claimRightFreeSpace(); | |
| 5541 } | |
| 5542 } | |
| 5543 /** | |
| 5544 * Updates the screen to reflect a pending content change. | |
| 5545 * | |
| 5546 * @param event .start the start offset of the change | |
| 5547 * @param event .newText text that is going to be inserted or empty String | |
| 5548 * if no text will be inserted | |
| 5549 * @param event .replaceCharCount length of text that is going to be replaced | |
| 5550 * @param event .newCharCount length of text that is going to be inserted | |
| 5551 * @param event .replaceLineCount number of lines that are going to be replaced | |
| 5552 * @param event .newLineCount number of new lines that are going to be inserted | |
| 5553 */ | |
| 5554 void handleTextChanging(TextChangingEvent event) { | |
| 5555 if (event.replaceCharCount < 0) { | |
| 5556 event.start += event.replaceCharCount; | |
| 5557 event.replaceCharCount *= -1; | |
| 5558 } | |
| 5559 lastTextChangeStart = event.start; | |
| 5560 lastTextChangeNewLineCount = event.newLineCount; | |
| 5561 lastTextChangeNewCharCount = event.newCharCount; | |
| 5562 lastTextChangeReplaceLineCount = event.replaceLineCount; | |
| 5563 lastTextChangeReplaceCharCount = event.replaceCharCount; | |
| 5564 int lineIndex = content.getLineAtOffset(event.start); | |
| 5565 int srcY = getLinePixel(lineIndex + event.replaceLineCount + 1); | |
| 5566 int destY = getLinePixel(lineIndex + 1) + event.newLineCount * renderer.getLineHeight(); | |
| 5567 lastLineBottom = destY; | |
| 5568 if (srcY < 0 && destY < 0) { | |
| 5569 lastLineBottom += srcY - destY; | |
| 5570 verticalScrollOffset += destY - srcY; | |
| 5571 calculateTopIndex(destY - srcY); | |
| 5572 setScrollBars(true); | |
| 5573 } else { | |
| 5574 scrollText(srcY, destY); | |
| 5575 } | |
| 5576 | |
| 5577 renderer.textChanging(event); | |
| 5578 | |
| 5579 // Update the caret offset if it is greater than the length of the content. | |
| 5580 // This is necessary since style range API may be called between the | |
| 5581 // handleTextChanging and handleTextChanged events and this API sets the | |
| 5582 // caretOffset. | |
| 5583 int newEndOfText = content.getCharCount() - event.replaceCharCount + event.newCharCount; | |
| 5584 if (caretOffset > newEndOfText) caretOffset = newEndOfText; | |
| 5585 } | |
| 5586 /** | |
| 5587 * Called when the widget content is set programmatically, overwriting | |
| 5588 * the old content. Resets the caret position, selection and scroll offsets. | |
| 5589 * Recalculates the content width and scroll bars. Redraws the widget. | |
| 5590 * | |
| 5591 * @param event text change event. | |
| 5592 */ | |
| 5593 void handleTextSet(TextChangedEvent event) { | |
| 5594 reset(); | |
| 5595 } | |
| 5596 /** | |
| 5597 * Called when a traversal key is pressed. | |
| 5598 * Allow tab next traversal to occur when the widget is in single | |
| 5599 * line mode or in multi line and non-editable mode . | |
| 5600 * When in editable multi line mode we want to prevent the tab | |
| 5601 * traversal and receive the tab key event instead. | |
| 5602 * | |
| 5603 * @param event the event | |
| 5604 */ | |
| 5605 void handleTraverse(Event event) { | |
| 5606 switch (event.detail) { | |
| 5607 case DWT.TRAVERSE_ESCAPE: | |
| 5608 case DWT.TRAVERSE_PAGE_NEXT: | |
| 5609 case DWT.TRAVERSE_PAGE_PREVIOUS: | |
| 5610 event.doit = true; | |
| 5611 break; | |
| 5612 case DWT.TRAVERSE_RETURN: | |
| 5613 case DWT.TRAVERSE_TAB_NEXT: | |
| 5614 case DWT.TRAVERSE_TAB_PREVIOUS: | |
| 5615 if ((getStyle() & DWT.SINGLE) !is 0) { | |
| 5616 event.doit = true; | |
| 5617 } else { | |
| 5618 if (!editable || (event.stateMask & DWT.MODIFIER_MASK) !is 0) { | |
| 5619 event.doit = true; | |
| 5620 } | |
| 5621 } | |
| 5622 break; | |
| 5623 default: | |
| 5624 } | |
| 5625 } | |
| 5626 /** | |
| 5627 * Scrolls the widget vertically. | |
| 5628 */ | |
| 5629 void handleVerticalScroll(Event event) { | |
| 5630 int scrollPixel = getVerticalBar().getSelection() - getVerticalScrollOffset(); | |
| 5631 scrollVertical(scrollPixel, false); | |
| 5632 } | |
| 5633 /** | |
| 5634 * Add accessibility support for the widget. | |
| 5635 */ | |
| 5636 void initializeAccessible() { | |
| 5637 final Accessible accessible = getAccessible(); | |
| 5638 accessible.addAccessibleListener(new class() AccessibleAdapter { | |
| 5639 public void getName (AccessibleEvent e) { | |
|
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parents:
197
diff
changeset
|
5640 String name = null; |
| 155 | 5641 Label label = getAssociatedLabel (); |
| 5642 if (label !is null) { | |
| 5643 name = stripMnemonic (label.getText()); | |
| 5644 } | |
| 5645 e.result = name; | |
| 5646 } | |
| 5647 public void getHelp(AccessibleEvent e) { | |
| 5648 e.result = getToolTipText(); | |
| 5649 } | |
| 5650 public void getKeyboardShortcut(AccessibleEvent e) { | |
|
212
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Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
5651 String shortcut = null; |
| 155 | 5652 Label label = getAssociatedLabel (); |
| 5653 if (label !is null) { | |
|
212
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Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
5654 String text = label.getText (); |
| 155 | 5655 if (text !is null) { |
| 5656 dchar mnemonic = _findMnemonic (text); | |
| 5657 if (mnemonic !is '\0') { | |
| 5658 shortcut = "Alt+"~tango.text.convert.Utf.toString( [mnemonic] ); //$NON-NLS-1$ | |
| 5659 } | |
| 5660 } | |
| 5661 } | |
| 5662 e.result = shortcut; | |
| 5663 } | |
| 5664 }); | |
| 5665 accessible.addAccessibleTextListener(new class() AccessibleTextAdapter { | |
| 5666 public void getCaretOffset(AccessibleTextEvent e) { | |
| 5667 e.offset = this.outer.getCaretOffset(); | |
| 5668 } | |
| 5669 public void getSelectionRange(AccessibleTextEvent e) { | |
| 5670 Point selection = this.outer.getSelectionRange(); | |
| 5671 e.offset = selection.x; | |
| 5672 e.length = selection.y; | |
| 5673 } | |
| 5674 }); | |
| 5675 accessible.addAccessibleControlListener(new class() AccessibleControlAdapter { | |
| 5676 public void getRole(AccessibleControlEvent e) { | |
| 5677 e.detail = ACC.ROLE_TEXT; | |
| 5678 } | |
| 5679 public void getState(AccessibleControlEvent e) { | |
| 5680 int state = 0; | |
| 5681 if (isEnabled()) state |= ACC.STATE_FOCUSABLE; | |
| 5682 if (isFocusControl()) state |= ACC.STATE_FOCUSED; | |
| 5683 if (!isVisible()) state |= ACC.STATE_INVISIBLE; | |
| 5684 if (!getEditable()) state |= ACC.STATE_READONLY; | |
| 5685 e.detail = state; | |
| 5686 } | |
| 5687 public void getValue(AccessibleControlEvent e) { | |
| 5688 e.result = this.outer.getText(); | |
| 5689 } | |
| 5690 }); | |
| 5691 addListener(DWT.FocusIn, new class(accessible) Listener { | |
| 5692 Accessible acc; | |
| 5693 this( Accessible acc ){ this.acc = acc; } | |
| 5694 public void handleEvent(Event event) { | |
| 5695 acc.setFocus(ACC.CHILDID_SELF); | |
| 5696 } | |
| 5697 }); | |
| 5698 } | |
| 5699 /* | |
| 5700 * Return the Label immediately preceding the receiver in the z-order, | |
| 5701 * or null if none. | |
| 5702 */ | |
| 5703 Label getAssociatedLabel () { | |
| 5704 Control[] siblings = getParent ().getChildren (); | |
| 5705 for (int i = 0; i < siblings.length; i++) { | |
| 5706 if (siblings [i] is this) { | |
| 5707 if (i > 0 && ( null !is cast(Label)siblings [i-1])) { | |
| 5708 return cast(Label) siblings [i-1]; | |
| 5709 } | |
| 5710 } | |
| 5711 } | |
| 5712 return null; | |
| 5713 } | |
|
212
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Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
5714 String stripMnemonic (String string) { |
| 155 | 5715 int index = 0; |
| 5716 int length_ = string.length; | |
| 5717 do { | |
| 5718 while ((index < length_) && (string[index] !is '&')) index++; | |
| 5719 if (++index >= length_) return string; | |
| 5720 if (string[index] !is '&') { | |
| 5721 return string[0 .. index-1] ~ string[index .. length_]; | |
| 5722 } | |
| 5723 index++; | |
| 5724 } while (index < length_); | |
| 5725 return string; | |
| 5726 } | |
| 5727 /* | |
| 5728 * Return the lowercase of the first non-'&' character following | |
| 5729 * an '&' character in the given string. If there are no '&' | |
| 5730 * characters in the given string, return '\0'. | |
| 5731 */ | |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
5732 dchar _findMnemonic (String string) { |
| 155 | 5733 if (string is null) return '\0'; |
| 5734 int index = 0; | |
| 5735 int length_ = string.length; | |
| 5736 do { | |
| 5737 while (index < length_ && string[index] !is '&') index++; | |
| 5738 if (++index >= length_) return '\0'; | |
| 178 | 5739 if (string[index] !is '&') return CharacterToLower(firstCodePoint( string[index .. $ ] )); |
| 155 | 5740 index++; |
| 5741 } while (index < length_); | |
| 5742 return '\0'; | |
| 5743 } | |
| 5744 /** | |
| 5745 * Executes the action. | |
| 5746 * | |
| 5747 * @param action one of the actions defined in ST.java | |
| 5748 */ | |
| 5749 public void invokeAction(int action) { | |
| 5750 checkWidget(); | |
| 5751 updateCaretDirection = true; | |
| 5752 switch (action) { | |
| 5753 // Navigation | |
| 5754 case ST.LINE_UP: | |
| 5755 doLineUp(false); | |
| 5756 clearSelection(true); | |
| 5757 break; | |
| 5758 case ST.LINE_DOWN: | |
| 5759 doLineDown(false); | |
| 5760 clearSelection(true); | |
| 5761 break; | |
| 5762 case ST.LINE_START: | |
| 5763 doLineStart(); | |
| 5764 clearSelection(true); | |
| 5765 break; | |
| 5766 case ST.LINE_END: | |
| 5767 doLineEnd(); | |
| 5768 clearSelection(true); | |
| 5769 break; | |
| 5770 case ST.COLUMN_PREVIOUS: | |
| 5771 doCursorPrevious(); | |
| 5772 clearSelection(true); | |
| 5773 break; | |
| 5774 case ST.COLUMN_NEXT: | |
| 5775 doCursorNext(); | |
| 5776 clearSelection(true); | |
| 5777 break; | |
| 5778 case ST.PAGE_UP: | |
| 5779 doPageUp(false, -1); | |
| 5780 clearSelection(true); | |
| 5781 break; | |
| 5782 case ST.PAGE_DOWN: | |
| 5783 doPageDown(false, -1); | |
| 5784 clearSelection(true); | |
| 5785 break; | |
| 5786 case ST.WORD_PREVIOUS: | |
| 5787 doWordPrevious(); | |
| 5788 clearSelection(true); | |
| 5789 break; | |
| 5790 case ST.WORD_NEXT: | |
| 5791 doWordNext(); | |
| 5792 clearSelection(true); | |
| 5793 break; | |
| 5794 case ST.TEXT_START: | |
| 5795 doContentStart(); | |
| 5796 clearSelection(true); | |
| 5797 break; | |
| 5798 case ST.TEXT_END: | |
| 5799 doContentEnd(); | |
| 5800 clearSelection(true); | |
| 5801 break; | |
| 5802 case ST.WINDOW_START: | |
| 5803 doPageStart(); | |
| 5804 clearSelection(true); | |
| 5805 break; | |
| 5806 case ST.WINDOW_END: | |
| 5807 doPageEnd(); | |
| 5808 clearSelection(true); | |
| 5809 break; | |
| 5810 // Selection | |
| 5811 case ST.SELECT_LINE_UP: | |
| 5812 doSelectionLineUp(); | |
| 5813 break; | |
| 5814 case ST.SELECT_ALL: | |
| 5815 selectAll(); | |
| 5816 break; | |
| 5817 case ST.SELECT_LINE_DOWN: | |
| 5818 doSelectionLineDown(); | |
| 5819 break; | |
| 5820 case ST.SELECT_LINE_START: | |
| 5821 doLineStart(); | |
| 5822 doSelection(ST.COLUMN_PREVIOUS); | |
| 5823 break; | |
| 5824 case ST.SELECT_LINE_END: | |
| 5825 doLineEnd(); | |
| 5826 doSelection(ST.COLUMN_NEXT); | |
| 5827 break; | |
| 5828 case ST.SELECT_COLUMN_PREVIOUS: | |
| 5829 doSelectionCursorPrevious(); | |
| 5830 doSelection(ST.COLUMN_PREVIOUS); | |
| 5831 break; | |
| 5832 case ST.SELECT_COLUMN_NEXT: | |
| 5833 doSelectionCursorNext(); | |
| 5834 doSelection(ST.COLUMN_NEXT); | |
| 5835 break; | |
| 5836 case ST.SELECT_PAGE_UP: | |
| 5837 doSelectionPageUp(-1); | |
| 5838 break; | |
| 5839 case ST.SELECT_PAGE_DOWN: | |
| 5840 doSelectionPageDown(-1); | |
| 5841 break; | |
| 5842 case ST.SELECT_WORD_PREVIOUS: | |
| 5843 doSelectionWordPrevious(); | |
| 5844 doSelection(ST.COLUMN_PREVIOUS); | |
| 5845 break; | |
| 5846 case ST.SELECT_WORD_NEXT: | |
| 5847 doSelectionWordNext(); | |
| 5848 doSelection(ST.COLUMN_NEXT); | |
| 5849 break; | |
| 5850 case ST.SELECT_TEXT_START: | |
| 5851 doContentStart(); | |
| 5852 doSelection(ST.COLUMN_PREVIOUS); | |
| 5853 break; | |
| 5854 case ST.SELECT_TEXT_END: | |
| 5855 doContentEnd(); | |
| 5856 doSelection(ST.COLUMN_NEXT); | |
| 5857 break; | |
| 5858 case ST.SELECT_WINDOW_START: | |
| 5859 doPageStart(); | |
| 5860 doSelection(ST.COLUMN_PREVIOUS); | |
| 5861 break; | |
| 5862 case ST.SELECT_WINDOW_END: | |
| 5863 doPageEnd(); | |
| 5864 doSelection(ST.COLUMN_NEXT); | |
| 5865 break; | |
| 5866 // Modification | |
| 5867 case ST.CUT: | |
| 5868 cut(); | |
| 5869 break; | |
| 5870 case ST.COPY: | |
| 5871 copy(); | |
| 5872 break; | |
| 5873 case ST.PASTE: | |
| 5874 paste(); | |
| 5875 break; | |
| 5876 case ST.DELETE_PREVIOUS: | |
| 5877 doBackspace(); | |
| 5878 break; | |
| 5879 case ST.DELETE_NEXT: | |
| 5880 doDelete(); | |
| 5881 break; | |
| 5882 case ST.DELETE_WORD_PREVIOUS: | |
| 5883 doDeleteWordPrevious(); | |
| 5884 break; | |
| 5885 case ST.DELETE_WORD_NEXT: | |
| 5886 doDeleteWordNext(); | |
| 5887 break; | |
| 5888 // Miscellaneous | |
| 5889 case ST.TOGGLE_OVERWRITE: | |
| 5890 overwrite = !overwrite; // toggle insert/overwrite mode | |
| 5891 break; | |
| 5892 default: | |
| 5893 } | |
| 5894 } | |
| 5895 /** | |
| 5896 * Temporary until DWT provides this | |
| 5897 */ | |
| 5898 bool isBidi() { | |
| 213 | 5899 return IS_GTK || IS_CARBON || BidiUtil.isBidiPlatform() || isMirrored_; |
| 155 | 5900 } |
| 5901 bool isBidiCaret() { | |
| 5902 return BidiUtil.isBidiPlatform(); | |
| 5903 } | |
| 5904 bool isFixedLineHeight() { | |
| 5905 return fixedLineHeight; | |
| 5906 } | |
| 5907 /** | |
| 5908 * Returns whether the given offset is inside a multi byte line delimiter. | |
| 5909 * Example: | |
| 5910 * "Line1\r\n" isLineDelimiter(5) is false but isLineDelimiter(6) is true | |
| 5911 * | |
| 5912 * @return true if the given offset is inside a multi byte line delimiter. | |
| 5913 * false if the given offset is before or after a line delimiter. | |
| 5914 */ | |
| 5915 bool isLineDelimiter(int offset) { | |
| 5916 int line = content.getLineAtOffset(offset); | |
| 5917 int lineOffset = content.getOffsetAtLine(line); | |
| 5918 int offsetInLine = offset - lineOffset; | |
| 5919 // offsetInLine will be greater than line length if the line | |
| 5920 // delimiter is longer than one character and the offset is set | |
| 5921 // in between parts of the line delimiter. | |
| 5922 return offsetInLine > content.getLine(line).length; | |
| 5923 } | |
| 5924 /** | |
| 5925 * Returns whether the widget is mirrored (right oriented/right to left | |
| 5926 * writing order). | |
| 5927 * | |
| 5928 * @return isMirrored true=the widget is right oriented, false=the widget | |
| 5929 * is left oriented | |
| 5930 */ | |
| 5931 bool isMirrored() { | |
| 5932 return isMirrored_; | |
| 5933 } | |
| 5934 /** | |
| 5935 * Returns whether the widget can have only one line. | |
| 5936 * | |
| 5937 * @return true if widget can have only one line, false if widget can have | |
| 5938 * multiple lines | |
| 5939 */ | |
| 5940 bool isSingleLine() { | |
| 5941 return (getStyle() & DWT.SINGLE) !is 0; | |
| 5942 } | |
| 5943 /** | |
| 5944 * Sends the specified verify event, replace/insert text as defined by | |
| 5945 * the event and send a modify event. | |
| 5946 * | |
| 5947 * @param event the text change event. | |
| 5948 * <ul> | |
| 5949 * <li>event.start - the replace start offset</li> | |
| 5950 * <li>event.end - the replace end offset</li> | |
| 5951 * <li>event.text - the new text</li> | |
| 5952 * </ul> | |
| 5953 * @param updateCaret whether or not he caret should be set behind | |
| 5954 * the new text | |
| 5955 */ | |
| 5956 void modifyContent(Event event, bool updateCaret) { | |
| 5957 event.doit = true; | |
| 5958 notifyListeners(DWT.Verify, event); | |
| 5959 if (event.doit) { | |
| 5960 StyledTextEvent styledTextEvent = null; | |
| 5961 int replacedLength = event.end - event.start; | |
| 5962 if (isListening(ExtendedModify)) { | |
| 5963 styledTextEvent = new StyledTextEvent(content); | |
| 5964 styledTextEvent.start = event.start; | |
| 5965 styledTextEvent.end = event.start + event.text.length; | |
| 5966 styledTextEvent.text = content.getTextRange(event.start, replacedLength); | |
| 5967 } | |
| 5968 if (updateCaret) { | |
| 5969 //Fix advancing flag for delete/backspace key on direction boundary | |
| 5970 if (event.text.length is 0) { | |
| 5971 int lineIndex = content.getLineAtOffset(event.start); | |
| 5972 int lineOffset = content.getOffsetAtLine(lineIndex); | |
| 5973 TextLayout layout = renderer.getTextLayout(lineIndex); | |
| 5974 int levelStart = layout.getLevel(event.start - lineOffset); | |
| 5975 int lineIndexEnd = content.getLineAtOffset(event.end); | |
| 5976 if (lineIndex !is lineIndexEnd) { | |
| 5977 renderer.disposeTextLayout(layout); | |
| 5978 lineOffset = content.getOffsetAtLine(lineIndexEnd); | |
| 5979 layout = renderer.getTextLayout(lineIndexEnd); | |
| 5980 } | |
| 5981 int levelEnd = layout.getLevel(event.end - lineOffset); | |
| 5982 renderer.disposeTextLayout(layout); | |
| 5983 if (levelStart !is levelEnd) { | |
| 5984 caretAlignment = PREVIOUS_OFFSET_TRAILING; | |
| 5985 } else { | |
| 5986 caretAlignment = OFFSET_LEADING; | |
| 5987 } | |
| 5988 } | |
| 5989 } | |
| 5990 content.replaceTextRange(event.start, replacedLength, event.text); | |
| 5991 // set the caret position prior to sending the modify event. | |
| 5992 // fixes 1GBB8NJ | |
| 5993 if (updateCaret) { | |
| 5994 // always update the caret location. fixes 1G8FODP | |
| 5995 setSelection(event.start + event.text.length, 0, true); | |
| 5996 showCaret(); | |
| 5997 } | |
| 5998 sendModifyEvent(event); | |
| 5999 if (isListening(ExtendedModify)) { | |
| 6000 notifyListeners(ExtendedModify, styledTextEvent); | |
| 6001 } | |
| 6002 } | |
| 6003 } | |
| 6004 void paintObject(GC gc, int x, int y, int ascent, int descent, StyleRange style, Bullet bullet, int bulletIndex) { | |
| 6005 if (isListening(PaintObject)) { | |
| 6006 StyledTextEvent event = new StyledTextEvent (content) ; | |
| 6007 event.gc = gc; | |
| 6008 event.x = x; | |
| 6009 event.y = y; | |
| 6010 event.ascent = ascent; | |
| 6011 event.descent = descent; | |
| 6012 event.style = style; | |
| 6013 event.bullet = bullet; | |
| 6014 event.bulletIndex = bulletIndex; | |
| 6015 notifyListeners(PaintObject, event); | |
| 6016 } | |
| 6017 } | |
| 6018 /** | |
| 6019 * Replaces the selection with the text on the <code>DND.CLIPBOARD</code> | |
| 6020 * clipboard or, if there is no selection, inserts the text at the current | |
| 6021 * caret offset. If the widget has the DWT.SINGLE style and the | |
| 6022 * clipboard text contains more than one line, only the first line without | |
| 6023 * line delimiters is inserted in the widget. | |
| 6024 * | |
| 6025 * @exception DWTException <ul> | |
| 6026 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6027 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6028 * </ul> | |
| 6029 */ | |
| 6030 public void paste(){ | |
| 6031 checkWidget(); | |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
6032 String text = (cast(ArrayWrapperString) getClipboardContent(DND.CLIPBOARD)).array; |
| 155 | 6033 if (text !is null && text.length > 0) { |
| 6034 Event event = new Event(); | |
| 6035 event.start = selection.x; | |
| 6036 event.end = selection.y; | |
| 6037 event.text = getModelDelimitedText(text); | |
| 6038 sendKeyEvent(event); | |
| 6039 } | |
| 6040 } | |
| 6041 /** | |
| 6042 * Prints the widget's text to the default printer. | |
| 6043 * | |
| 6044 * @exception DWTException <ul> | |
| 6045 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6046 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6047 * </ul> | |
| 6048 */ | |
| 6049 public void print() { | |
| 6050 checkWidget(); | |
| 6051 Printer printer = new Printer(); | |
| 6052 StyledTextPrintOptions options = new StyledTextPrintOptions(); | |
| 6053 options.printTextForeground = true; | |
| 6054 options.printTextBackground = true; | |
| 6055 options.printTextFontStyle = true; | |
| 6056 options.printLineBackground = true; | |
| 6057 (new Printing(this, printer, options)).run(); | |
| 6058 printer.dispose(); | |
| 6059 } | |
| 6060 /** | |
| 6061 * Returns a runnable that will print the widget's text | |
| 6062 * to the specified printer. | |
| 6063 * <p> | |
| 6064 * The runnable may be run in a non-UI thread. | |
| 6065 * </p> | |
| 6066 * | |
| 6067 * @param printer the printer to print to | |
| 6068 * @exception DWTException <ul> | |
| 6069 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6070 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6071 * </ul> | |
| 6072 * @exception IllegalArgumentException <ul> | |
| 6073 * <li>ERROR_NULL_ARGUMENT when printer is null</li> | |
| 6074 * </ul> | |
| 6075 */ | |
| 6076 public Runnable print(Printer printer) { | |
| 6077 checkWidget(); | |
| 6078 if (printer is null) { | |
| 6079 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6080 } | |
| 6081 StyledTextPrintOptions options = new StyledTextPrintOptions(); | |
| 6082 options.printTextForeground = true; | |
| 6083 options.printTextBackground = true; | |
| 6084 options.printTextFontStyle = true; | |
| 6085 options.printLineBackground = true; | |
| 6086 return print(printer, options); | |
| 6087 } | |
| 6088 /** | |
| 6089 * Returns a runnable that will print the widget's text | |
| 6090 * to the specified printer. | |
| 6091 * <p> | |
| 6092 * The runnable may be run in a non-UI thread. | |
| 6093 * </p> | |
| 6094 * | |
| 6095 * @param printer the printer to print to | |
| 6096 * @param options print options to use during printing | |
| 6097 * @exception DWTException <ul> | |
| 6098 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6099 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6100 * </ul> | |
| 6101 * @exception IllegalArgumentException <ul> | |
| 6102 * <li>ERROR_NULL_ARGUMENT when printer or options is null</li> | |
| 6103 * </ul> | |
| 6104 * @since 2.1 | |
| 6105 */ | |
| 6106 public Runnable print(Printer printer, StyledTextPrintOptions options) { | |
| 6107 checkWidget(); | |
| 6108 if (printer is null || options is null) { | |
| 6109 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6110 } | |
| 6111 return new Printing(this, printer, options); | |
| 6112 } | |
| 6113 /** | |
| 6114 * Causes the entire bounds of the receiver to be marked | |
| 6115 * as needing to be redrawn. The next time a paint request | |
| 6116 * is processed, the control will be completely painted. | |
| 6117 * <p> | |
| 6118 * Recalculates the content width for all lines in the bounds. | |
| 6119 * When a <code>LineStyleListener</code> is used a redraw call | |
| 6120 * is the only notification to the widget that styles have changed | |
| 6121 * and that the content width may have changed. | |
| 6122 * </p> | |
| 6123 * | |
| 6124 * @exception DWTException <ul> | |
| 6125 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6126 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6127 * </ul> | |
| 6128 * | |
| 6129 * @see Control#update() | |
| 6130 */ | |
| 6131 public override void redraw() { | |
| 6132 super.redraw(); | |
| 6133 int itemCount = getPartialBottomIndex() - topIndex + 1; | |
| 6134 renderer.reset(topIndex, itemCount); | |
| 6135 renderer.calculate(topIndex, itemCount); | |
| 6136 setScrollBars(false); | |
| 6137 } | |
| 6138 /** | |
| 6139 * Causes the rectangular area of the receiver specified by | |
| 6140 * the arguments to be marked as needing to be redrawn. | |
| 6141 * The next time a paint request is processed, that area of | |
| 6142 * the receiver will be painted. If the <code>all</code> flag | |
| 6143 * is <code>true</code>, any children of the receiver which | |
| 6144 * intersect with the specified area will also paint their | |
| 6145 * intersecting areas. If the <code>all</code> flag is | |
| 6146 * <code>false</code>, the children will not be painted. | |
| 6147 * <p> | |
| 6148 * Marks the content width of all lines in the specified rectangle | |
| 6149 * as unknown. Recalculates the content width of all visible lines. | |
| 6150 * When a <code>LineStyleListener</code> is used a redraw call | |
| 6151 * is the only notification to the widget that styles have changed | |
| 6152 * and that the content width may have changed. | |
| 6153 * </p> | |
| 6154 * | |
| 6155 * @param x the x coordinate of the area to draw | |
| 6156 * @param y the y coordinate of the area to draw | |
| 6157 * @param width the width of the area to draw | |
| 6158 * @param height the height of the area to draw | |
| 6159 * @param all <code>true</code> if children should redraw, and <code>false</code> otherwise | |
| 6160 * | |
| 6161 * @exception DWTException <ul> | |
| 6162 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6163 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6164 * </ul> | |
| 6165 * | |
| 6166 * @see Control#update() | |
| 6167 */ | |
| 6168 public override void redraw(int x, int y, int width, int height, bool all) { | |
| 6169 super.redraw(x, y, width, height, all); | |
| 6170 if (height > 0) { | |
| 6171 int firstLine = getLineIndex(y); | |
| 6172 int lastLine = getLineIndex(y + height); | |
| 6173 resetCache(firstLine, lastLine - firstLine + 1); | |
| 6174 } | |
| 6175 } | |
| 6176 void redrawLines(int startLine, int lineCount) { | |
| 6177 // do nothing if redraw range is completely invisible | |
| 6178 int partialBottomIndex = getPartialBottomIndex(); | |
| 6179 if (startLine > partialBottomIndex || startLine + lineCount - 1 < topIndex) { | |
| 6180 return; | |
| 6181 } | |
| 6182 // only redraw visible lines | |
| 6183 if (startLine < topIndex) { | |
| 6184 lineCount -= topIndex - startLine; | |
| 6185 startLine = topIndex; | |
| 6186 } | |
| 6187 if (startLine + lineCount - 1 > partialBottomIndex) { | |
| 6188 lineCount = partialBottomIndex - startLine + 1; | |
| 6189 } | |
| 6190 startLine -= topIndex; | |
| 6191 int redrawTop = getLinePixel(startLine); | |
| 6192 int redrawBottom = getLinePixel(startLine + lineCount); | |
| 6193 int redrawWidth = clientAreaWidth - leftMargin - rightMargin; | |
| 6194 super.redraw(leftMargin, redrawTop, redrawWidth, redrawBottom - redrawTop, true); | |
| 6195 } | |
| 6196 void redrawLinesBullet (int[] redrawLines) { | |
| 6197 if (redrawLines is null) return; | |
| 6198 int topIndex = getPartialTopIndex(); | |
| 6199 int bottomIndex = getPartialBottomIndex(); | |
| 6200 for (int i = 0; i < redrawLines.length; i++) { | |
| 6201 int lineIndex = redrawLines[i]; | |
| 6202 if (!(topIndex <= lineIndex && lineIndex <= bottomIndex)) continue; | |
| 6203 int width = -1; | |
| 6204 Bullet bullet = renderer.getLineBullet(lineIndex, null); | |
| 6205 if (bullet !is null) { | |
| 6206 StyleRange style = bullet.style; | |
| 6207 GlyphMetrics metrics = style.metrics; | |
| 6208 width = metrics.width; | |
| 6209 } | |
| 6210 if (width is -1) width = getClientArea().width; | |
| 6211 int height = renderer.getLineHeight(lineIndex); | |
| 6212 int y = getLinePixel(lineIndex); | |
| 6213 super.redraw(0, y, width, height, false); | |
| 6214 } | |
| 6215 } | |
| 6216 /** | |
| 6217 * Redraws the specified text range. | |
| 6218 * | |
| 6219 * @param start offset of the first character to redraw | |
| 6220 * @param length number of characters to redraw | |
| 6221 * @param clearBackground true if the background should be cleared as | |
| 6222 * part of the redraw operation. If true, the entire redraw range will | |
| 6223 * be cleared before anything is redrawn. If the redraw range includes | |
| 6224 * the last character of a line (i.e., the entire line is redrawn) the | |
| 6225 * line is cleared all the way to the right border of the widget. | |
| 6226 * The redraw operation will be faster and smoother if clearBackground | |
| 6227 * is set to false. Whether or not the flag can be set to false depends | |
| 6228 * on the type of change that has taken place. If font styles or | |
| 6229 * background colors for the redraw range have changed, clearBackground | |
| 6230 * should be set to true. If only foreground colors have changed for | |
| 6231 * the redraw range, clearBackground can be set to false. | |
| 6232 * @exception DWTException <ul> | |
| 6233 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6234 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6235 * </ul> | |
| 6236 * @exception IllegalArgumentException <ul> | |
| 6237 * <li>ERROR_INVALID_RANGE when start and/or end are outside the widget content</li> | |
| 6238 * </ul> | |
| 6239 */ | |
| 6240 public void redrawRange(int start, int length, bool clearBackground) { | |
| 6241 checkWidget(); | |
| 6242 int end = start + length; | |
| 6243 int contentLength = content.getCharCount(); | |
| 6244 if (start > end || start < 0 || end > contentLength) { | |
| 6245 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 6246 } | |
| 6247 int firstLine = content.getLineAtOffset(start); | |
| 6248 int lastLine = content.getLineAtOffset(end); | |
| 6249 resetCache(firstLine, lastLine - firstLine + 1); | |
| 6250 internalRedrawRange(start, length); | |
| 6251 } | |
| 6252 /** | |
| 6253 * Removes the specified bidirectional segment listener. | |
| 6254 * | |
| 6255 * @param listener the listener | |
| 6256 * @exception DWTException <ul> | |
| 6257 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6258 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6259 * </ul> | |
| 6260 * @exception IllegalArgumentException <ul> | |
| 6261 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6262 * </ul> | |
| 6263 * @since 2.0 | |
| 6264 */ | |
| 6265 public void removeBidiSegmentListener(BidiSegmentListener listener) { | |
| 6266 checkWidget(); | |
| 6267 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6268 removeListener(LineGetSegments, listener); | |
| 6269 } | |
| 6270 /** | |
| 6271 * Removes the specified extended modify listener. | |
| 6272 * | |
| 6273 * @param extendedModifyListener the listener | |
| 6274 * @exception DWTException <ul> | |
| 6275 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6276 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6277 * </ul> | |
| 6278 * @exception IllegalArgumentException <ul> | |
| 6279 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6280 * </ul> | |
| 6281 */ | |
| 6282 public void removeExtendedModifyListener(ExtendedModifyListener extendedModifyListener) { | |
| 6283 checkWidget(); | |
| 6284 if (extendedModifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6285 removeListener(ExtendedModify, extendedModifyListener); | |
| 6286 } | |
| 6287 /** | |
| 6288 * Removes the specified line background listener. | |
| 6289 * | |
| 6290 * @param listener the listener | |
| 6291 * @exception DWTException <ul> | |
| 6292 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6293 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6294 * </ul> | |
| 6295 * @exception IllegalArgumentException <ul> | |
| 6296 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6297 * </ul> | |
| 6298 */ | |
| 6299 public void removeLineBackgroundListener(LineBackgroundListener listener) { | |
| 6300 checkWidget(); | |
| 6301 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6302 removeListener(LineGetBackground, listener); | |
| 6303 } | |
| 6304 /** | |
| 6305 * Removes the specified line style listener. | |
| 6306 * | |
| 6307 * @param listener the listener | |
| 6308 * @exception DWTException <ul> | |
| 6309 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6310 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6311 * </ul> | |
| 6312 * @exception IllegalArgumentException <ul> | |
| 6313 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6314 * </ul> | |
| 6315 */ | |
| 6316 public void removeLineStyleListener(LineStyleListener listener) { | |
| 6317 checkWidget(); | |
| 6318 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6319 removeListener(LineGetStyle, listener); | |
| 6320 } | |
| 6321 /** | |
| 6322 * Removes the specified modify listener. | |
| 6323 * | |
| 6324 * @param modifyListener the listener | |
| 6325 * @exception DWTException <ul> | |
| 6326 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6327 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6328 * </ul> | |
| 6329 * @exception IllegalArgumentException <ul> | |
| 6330 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6331 * </ul> | |
| 6332 */ | |
| 6333 public void removeModifyListener(ModifyListener modifyListener) { | |
| 6334 checkWidget(); | |
| 6335 if (modifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6336 removeListener(DWT.Modify, modifyListener); | |
| 6337 } | |
| 6338 /** | |
| 6339 * Removes the specified listener. | |
| 6340 * | |
| 6341 * @param listener the listener | |
| 6342 * @exception DWTException <ul> | |
| 6343 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6344 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6345 * </ul> | |
| 6346 * @exception IllegalArgumentException <ul> | |
| 6347 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6348 * </ul> | |
| 6349 * @since 3.2 | |
| 6350 */ | |
| 6351 public void removePaintObjectListener(PaintObjectListener listener) { | |
| 6352 checkWidget(); | |
| 6353 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6354 removeListener(PaintObject, listener); | |
| 6355 } | |
| 6356 /** | |
| 6357 * Removes the listener from the collection of listeners who will | |
| 6358 * be notified when the user changes the receiver's selection. | |
| 6359 * | |
| 6360 * @param listener the listener which should no longer be notified | |
| 6361 * | |
| 6362 * @exception IllegalArgumentException <ul> | |
| 6363 * <li>ERROR_NULL_ARGUMENT - if the listener is null</li> | |
| 6364 * </ul> | |
| 6365 * @exception DWTException <ul> | |
| 6366 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6367 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6368 * </ul> | |
| 6369 * | |
| 6370 * @see SelectionListener | |
| 6371 * @see #addSelectionListener | |
| 6372 */ | |
| 6373 public void removeSelectionListener(SelectionListener listener) { | |
| 6374 checkWidget(); | |
| 6375 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6376 removeListener(DWT.Selection, listener); | |
| 6377 } | |
| 6378 /** | |
| 6379 * Removes the specified verify listener. | |
| 6380 * | |
| 6381 * @param verifyListener the listener | |
| 6382 * @exception DWTException <ul> | |
| 6383 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6384 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6385 * </ul> | |
| 6386 * @exception IllegalArgumentException <ul> | |
| 6387 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6388 * </ul> | |
| 6389 */ | |
| 6390 public void removeVerifyListener(VerifyListener verifyListener) { | |
| 6391 checkWidget(); | |
| 6392 if (verifyListener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6393 removeListener(DWT.Verify, verifyListener); | |
| 6394 } | |
| 6395 /** | |
| 6396 * Removes the specified key verify listener. | |
| 6397 * | |
| 6398 * @param listener the listener | |
| 6399 * @exception DWTException <ul> | |
| 6400 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6401 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6402 * </ul> | |
| 6403 * @exception IllegalArgumentException <ul> | |
| 6404 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6405 * </ul> | |
| 6406 */ | |
| 6407 public void removeVerifyKeyListener(VerifyKeyListener listener) { | |
| 6408 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6409 removeListener(VerifyKey, listener); | |
| 6410 } | |
| 6411 /** | |
| 6412 * Removes the specified word movement listener. | |
| 6413 * | |
| 6414 * @param listener the listener | |
| 6415 * @exception DWTException <ul> | |
| 6416 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6417 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6418 * </ul> | |
| 6419 * @exception IllegalArgumentException <ul> | |
| 6420 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 6421 * </ul> | |
| 6422 * | |
| 6423 * @see MovementEvent | |
| 6424 * @see MovementListener | |
| 6425 * @see #addWordMovementListener | |
| 6426 * | |
| 6427 * @since 3.3 | |
| 6428 */ | |
| 6429 | |
| 6430 public void removeWordMovementListener(MovementListener listener) { | |
| 6431 checkWidget(); | |
| 6432 if (listener is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6433 removeListener(WordNext, listener); | |
| 6434 removeListener(WordPrevious, listener); | |
| 6435 } | |
| 6436 /** | |
| 6437 * Replaces the styles in the given range with new styles. This method | |
| 6438 * effectively deletes the styles in the given range and then adds the | |
| 6439 * the new styles. | |
| 6440 * <p> | |
| 6441 * Note: Because a StyleRange includes the start and length, the | |
| 6442 * same instance cannot occur multiple times in the array of styles. | |
| 6443 * If the same style attributes, such as font and color, occur in | |
| 6444 * multiple StyleRanges, <code>setStyleRanges(int, int, int[], StyleRange[])</code> | |
| 6445 * can be used to share styles and reduce memory usage. | |
| 6446 * </p><p> | |
| 6447 * Should not be called if a LineStyleListener has been set since the | |
| 6448 * listener maintains the styles. | |
| 6449 * </p> | |
| 6450 * | |
| 6451 * @param start offset of first character where styles will be deleted | |
| 6452 * @param length length of the range to delete styles in | |
| 6453 * @param ranges StyleRange objects containing the new style information. | |
| 6454 * The ranges should not overlap and should be within the specified start | |
| 6455 * and length. The style rendering is undefined if the ranges do overlap | |
| 6456 * or are ill-defined. Must not be null. | |
| 6457 * @exception DWTException <ul> | |
| 6458 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6459 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6460 * </ul> | |
| 6461 * @exception IllegalArgumentException <ul> | |
| 6462 * <li>ERROR_INVALID_RANGE when either start or end is outside the valid range (0 <= offset <= getCharCount())</li> | |
| 6463 * <li>ERROR_NULL_ARGUMENT when ranges is null</li> | |
| 6464 * </ul> | |
| 6465 * | |
| 6466 * @since 2.0 | |
| 6467 * | |
| 6468 * @see #setStyleRanges(int, int, int[], StyleRange[]) | |
| 6469 */ | |
| 6470 public void replaceStyleRanges(int start, int length, StyleRange[] ranges) { | |
| 6471 checkWidget(); | |
| 6472 if (isListening(LineGetStyle)) return; | |
| 6473 if (ranges is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6474 setStyleRanges(start, length, null, ranges, false); | |
| 6475 } | |
| 6476 /** | |
| 6477 * Replaces the given text range with new text. | |
| 6478 * If the widget has the DWT.SINGLE style and "text" contains more than | |
| 6479 * one line, only the first line is rendered but the text is stored | |
| 6480 * unchanged. A subsequent call to getText will return the same text | |
| 6481 * that was set. Note that only a single line of text should be set when | |
| 6482 * the DWT.SINGLE style is used. | |
| 6483 * <p> | |
| 6484 * <b>NOTE:</b> During the replace operation the current selection is | |
| 6485 * changed as follows: | |
| 6486 * <ul> | |
| 6487 * <li>selection before replaced text: selection unchanged | |
| 6488 * <li>selection after replaced text: adjust the selection so that same text | |
| 6489 * remains selected | |
| 6490 * <li>selection intersects replaced text: selection is cleared and caret | |
| 6491 * is placed after inserted text | |
| 6492 * </ul> | |
| 6493 * </p> | |
| 6494 * | |
| 6495 * @param start offset of first character to replace | |
| 6496 * @param length number of characters to replace. Use 0 to insert text | |
| 6497 * @param text new text. May be empty to delete text. | |
| 6498 * @exception DWTException <ul> | |
| 6499 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6500 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6501 * </ul> | |
| 6502 * @exception IllegalArgumentException <ul> | |
| 6503 * <li>ERROR_INVALID_RANGE when either start or end is outside the valid range (0 <= offset <= getCharCount())</li> | |
| 6504 * <li>ERROR_INVALID_ARGUMENT when either start or end is inside a multi byte line delimiter. | |
| 6505 * 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> | |
| 6506 * <li>ERROR_NULL_ARGUMENT when string is null</li> | |
| 6507 * </ul> | |
| 6508 */ | |
|
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|
6509 public void replaceTextRange(int start, int length, String text) { |
| 155 | 6510 checkWidget(); |
| 6511 if (text is null) { | |
| 6512 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 6513 } | |
| 6514 int contentLength = getCharCount(); | |
| 6515 int end = start + length; | |
| 6516 if (start > end || start < 0 || end > contentLength) { | |
| 6517 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 6518 } | |
| 6519 Event event = new Event(); | |
| 6520 event.start = start; | |
| 6521 event.end = end; | |
| 6522 event.text = text; | |
| 6523 modifyContent(event, false); | |
| 6524 } | |
| 6525 /** | |
| 6526 * Resets the caret position, selection and scroll offsets. Recalculate | |
| 6527 * the content width and scroll bars. Redraw the widget. | |
| 6528 */ | |
| 6529 void reset() { | |
| 6530 ScrollBar verticalBar = getVerticalBar(); | |
| 6531 ScrollBar horizontalBar = getHorizontalBar(); | |
| 6532 caretOffset = 0; | |
| 6533 topIndex = 0; | |
| 6534 topIndexY = 0; | |
| 6535 verticalScrollOffset = 0; | |
| 6536 horizontalScrollOffset = 0; | |
| 6537 resetSelection(); | |
| 6538 renderer.setContent(content); | |
| 6539 if (verticalBar !is null) { | |
| 6540 verticalBar.setSelection(0); | |
| 6541 } | |
| 6542 if (horizontalBar !is null) { | |
| 6543 horizontalBar.setSelection(0); | |
| 6544 } | |
| 6545 resetCache(0, 0); | |
| 6546 setCaretLocation(); | |
| 6547 super.redraw(); | |
| 6548 } | |
| 6549 void resetCache(int firstLine, int count) { | |
| 6550 int maxLineIndex = renderer.maxWidthLineIndex; | |
| 6551 renderer.reset(firstLine, count); | |
| 6552 renderer.calculateClientArea(); | |
| 6553 if (0 <= maxLineIndex && maxLineIndex < content.getLineCount()) { | |
| 6554 renderer.calculate(maxLineIndex, 1); | |
| 6555 } | |
| 6556 setScrollBars(true); | |
| 6557 if (!isFixedLineHeight()) { | |
| 6558 if (topIndex > firstLine) { | |
| 6559 verticalScrollOffset = -1; | |
| 6560 } | |
| 6561 renderer.calculateIdle(); | |
| 6562 } | |
| 6563 } | |
| 6564 /** | |
| 6565 * Resets the selection. | |
| 6566 */ | |
| 6567 void resetSelection() { | |
| 6568 selection.x = selection.y = caretOffset; | |
| 6569 selectionAnchor = -1; | |
| 6570 } | |
| 6571 | |
| 6572 public override void scroll(int destX, int destY, int x, int y, int width, int height, bool all) { | |
| 6573 super.scroll(destX, destY, x, y, width, height, false); | |
| 6574 if (all) { | |
| 6575 int deltaX = destX - x, deltaY = destY - y; | |
| 6576 Control[] children = getChildren(); | |
| 6577 for (int i=0; i<children.length; i++) { | |
| 6578 Control child = children[i]; | |
| 6579 Rectangle rect = child.getBounds(); | |
| 6580 child.setLocation(rect.x + deltaX, rect.y + deltaY); | |
| 6581 } | |
| 6582 } | |
| 6583 } | |
| 6584 | |
| 6585 /** | |
| 6586 * Scrolls the widget horizontally. | |
| 6587 * | |
| 6588 * @param pixels number of pixels to scroll, > 0 = scroll left, | |
| 6589 * < 0 scroll right | |
| 6590 * @param adjustScrollBar | |
| 6591 * true= the scroll thumb will be moved to reflect the new scroll offset. | |
| 6592 * false = the scroll thumb will not be moved | |
| 6593 * @return | |
| 6594 * true=the widget was scrolled | |
| 6595 * false=the widget was not scrolled, the given offset is not valid. | |
| 6596 */ | |
| 6597 bool scrollHorizontal(int pixels, bool adjustScrollBar) { | |
| 6598 if (pixels is 0) { | |
| 6599 return false; | |
| 6600 } | |
| 6601 ScrollBar horizontalBar = getHorizontalBar(); | |
| 6602 if (horizontalBar !is null && adjustScrollBar) { | |
| 6603 horizontalBar.setSelection(horizontalScrollOffset + pixels); | |
| 6604 } | |
| 6605 int scrollHeight = clientAreaHeight - topMargin - bottomMargin; | |
| 6606 if (pixels > 0) { | |
| 6607 int sourceX = leftMargin + pixels; | |
| 6608 int scrollWidth = clientAreaWidth - sourceX - rightMargin; | |
| 6609 if (scrollWidth > 0) { | |
| 6610 scroll(leftMargin, topMargin, sourceX, topMargin, scrollWidth, scrollHeight, true); | |
| 6611 } | |
| 6612 if (sourceX > scrollWidth) { | |
| 6613 super.redraw(leftMargin + scrollWidth, topMargin, pixels - scrollWidth, scrollHeight, true); | |
| 6614 } | |
| 6615 } else { | |
| 6616 int destinationX = leftMargin - pixels; | |
| 6617 int scrollWidth = clientAreaWidth - destinationX - rightMargin; | |
| 6618 if (scrollWidth > 0) { | |
| 6619 scroll(destinationX, topMargin, leftMargin, topMargin, scrollWidth, scrollHeight, true); | |
| 6620 } | |
| 6621 if (destinationX > scrollWidth) { | |
| 6622 super.redraw(leftMargin + scrollWidth, topMargin, -pixels - scrollWidth, scrollHeight, true); | |
| 6623 } | |
| 6624 } | |
| 6625 horizontalScrollOffset += pixels; | |
| 6626 setCaretLocation(); | |
| 6627 return true; | |
| 6628 } | |
| 6629 /** | |
| 6630 * Scrolls the widget vertically. | |
| 6631 * | |
| 6632 * @param pixel the new vertical scroll offset | |
| 6633 * @param adjustScrollBar | |
| 6634 * true= the scroll thumb will be moved to reflect the new scroll offset. | |
| 6635 * false = the scroll thumb will not be moved | |
| 6636 * @return | |
| 6637 * true=the widget was scrolled | |
| 6638 * false=the widget was not scrolled | |
| 6639 */ | |
| 6640 bool scrollVertical(int pixels, bool adjustScrollBar) { | |
| 6641 if (pixels is 0) { | |
| 6642 return false; | |
| 6643 } | |
| 6644 if (verticalScrollOffset !is -1) { | |
| 6645 ScrollBar verticalBar = getVerticalBar(); | |
| 6646 if (verticalBar !is null && adjustScrollBar) { | |
| 6647 verticalBar.setSelection(verticalScrollOffset + pixels); | |
| 6648 } | |
| 6649 int scrollWidth = clientAreaWidth - leftMargin - rightMargin; | |
| 6650 if (pixels > 0) { | |
| 6651 int sourceY = topMargin + pixels; | |
| 6652 int scrollHeight = clientAreaHeight - sourceY - bottomMargin; | |
| 6653 if (scrollHeight > 0) { | |
| 6654 scroll(leftMargin, topMargin, leftMargin, sourceY, scrollWidth, scrollHeight, true); | |
| 6655 } | |
| 6656 if (sourceY > scrollHeight) { | |
| 6657 int redrawY = Math.max(0, topMargin + scrollHeight); | |
| 6658 int redrawHeight = Math.min(clientAreaHeight, pixels - scrollHeight); | |
| 6659 super.redraw(leftMargin, redrawY, scrollWidth, redrawHeight, true); | |
| 6660 } | |
| 6661 } else { | |
| 6662 int destinationY = topMargin - pixels; | |
| 6663 int scrollHeight = clientAreaHeight - destinationY - bottomMargin; | |
| 6664 if (scrollHeight > 0) { | |
| 6665 scroll(leftMargin, destinationY, leftMargin, topMargin, scrollWidth, scrollHeight, true); | |
| 6666 } | |
| 6667 if (destinationY > scrollHeight) { | |
| 6668 int redrawY = Math.max(0, topMargin + scrollHeight); | |
| 6669 int redrawHeight = Math.min(clientAreaHeight, -pixels - scrollHeight); | |
| 6670 super.redraw(leftMargin, redrawY, scrollWidth, redrawHeight, true); | |
| 6671 } | |
| 6672 } | |
| 6673 verticalScrollOffset += pixels; | |
| 6674 calculateTopIndex(pixels); | |
| 6675 } else { | |
| 6676 calculateTopIndex(pixels); | |
| 6677 super.redraw(); | |
| 6678 } | |
| 6679 setCaretLocation(); | |
| 6680 return true; | |
| 6681 } | |
| 6682 void scrollText(int srcY, int destY) { | |
| 6683 if (srcY is destY) return; | |
| 6684 int deltaY = destY - srcY; | |
| 6685 int scrollWidth = clientAreaWidth - leftMargin - rightMargin, scrollHeight; | |
| 6686 if (deltaY > 0) { | |
| 6687 scrollHeight = clientAreaHeight - srcY - bottomMargin; | |
| 6688 } else { | |
| 6689 scrollHeight = clientAreaHeight - destY - bottomMargin; | |
| 6690 } | |
| 6691 scroll(leftMargin, destY, leftMargin, srcY, scrollWidth, scrollHeight, true); | |
| 6692 if ((0 < srcY + scrollHeight) && (topMargin > srcY)) { | |
| 6693 super.redraw(leftMargin, deltaY, scrollWidth, topMargin, false); | |
| 6694 } | |
| 6695 if ((0 < destY + scrollHeight) && (topMargin > destY)) { | |
| 6696 super.redraw(leftMargin, 0, scrollWidth, topMargin, false); | |
| 6697 } | |
| 6698 if ((clientAreaHeight - bottomMargin < srcY + scrollHeight) && (clientAreaHeight > srcY)) { | |
| 6699 super.redraw(leftMargin, clientAreaHeight - bottomMargin + deltaY, scrollWidth, bottomMargin, false); | |
| 6700 } | |
| 6701 if ((clientAreaHeight - bottomMargin < destY + scrollHeight) && (clientAreaHeight > destY)) { | |
| 6702 super.redraw(leftMargin, clientAreaHeight - bottomMargin, scrollWidth, bottomMargin, false); | |
| 6703 } | |
| 6704 } | |
| 6705 /** | |
| 6706 * Selects all the text. | |
| 6707 * | |
| 6708 * @exception DWTException <ul> | |
| 6709 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6710 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6711 * </ul> | |
| 6712 */ | |
| 6713 public void selectAll() { | |
| 6714 checkWidget(); | |
| 6715 setSelection(0, Math.max(getCharCount(),0)); | |
| 6716 } | |
| 6717 /** | |
| 6718 * Replaces/inserts text as defined by the event. | |
| 6719 * | |
| 6720 * @param event the text change event. | |
| 6721 * <ul> | |
| 6722 * <li>event.start - the replace start offset</li> | |
| 6723 * <li>event.end - the replace end offset</li> | |
| 6724 * <li>event.text - the new text</li> | |
| 6725 * </ul> | |
| 6726 */ | |
| 6727 void sendKeyEvent(Event event) { | |
| 6728 if (editable) { | |
| 6729 modifyContent(event, true); | |
| 6730 } | |
| 6731 } | |
| 6732 /** | |
| 6733 * Returns a StyledTextEvent that can be used to request data such | |
| 6734 * as styles and background color for a line. | |
| 6735 * <p> | |
| 6736 * The specified line may be a visual (wrapped) line if in word | |
| 6737 * wrap mode. The returned object will always be for a logical | |
| 6738 * (unwrapped) line. | |
| 6739 * </p> | |
| 6740 * | |
| 6741 * @param lineOffset offset of the line. This may be the offset of | |
| 6742 * a visual line if the widget is in word wrap mode. | |
| 6743 * @param line line text. This may be the text of a visual line if | |
| 6744 * the widget is in word wrap mode. | |
| 6745 * @return StyledTextEvent that can be used to request line data | |
| 6746 * for the given line. | |
| 6747 */ | |
|
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parents:
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diff
changeset
|
6748 StyledTextEvent sendLineEvent(int eventType, int lineOffset, String line) { |
| 155 | 6749 StyledTextEvent event = null; |
| 6750 if (isListening(eventType)) { | |
| 6751 event = new StyledTextEvent(content); | |
| 6752 event.detail = lineOffset; | |
| 6753 event.text = line; | |
| 6754 event.alignment = alignment; | |
| 6755 event.indent = indent; | |
| 6756 event.justify = justify; | |
| 6757 notifyListeners(eventType, event); | |
| 6758 } | |
| 6759 return event; | |
| 6760 } | |
| 6761 void sendModifyEvent(Event event) { | |
| 6762 Accessible accessible = getAccessible(); | |
| 6763 if (event.text.length is 0) { | |
| 6764 accessible.textChanged(ACC.TEXT_DELETE, event.start, event.end - event.start); | |
| 6765 } else { | |
| 6766 if (event.start is event.end) { | |
| 6767 accessible.textChanged(ACC.TEXT_INSERT, event.start, event.text.length); | |
| 6768 } else { | |
| 6769 accessible.textChanged(ACC.TEXT_DELETE, event.start, event.end - event.start); | |
| 6770 accessible.textChanged(ACC.TEXT_INSERT, event.start, event.text.length); | |
| 6771 } | |
| 6772 } | |
| 6773 notifyListeners(DWT.Modify, event); | |
| 6774 } | |
| 6775 /** | |
| 6776 * Sends the specified selection event. | |
| 6777 */ | |
| 6778 void sendSelectionEvent() { | |
| 6779 getAccessible().textSelectionChanged(); | |
| 6780 Event event = new Event(); | |
| 6781 event.x = selection.x; | |
| 6782 event.y = selection.y; | |
| 6783 notifyListeners(DWT.Selection, event); | |
| 6784 } | |
|
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parents:
197
diff
changeset
|
6785 int sendWordBoundaryEvent(int eventType, int movement, int offset, int newOffset, String lineText, int lineOffset) { |
| 155 | 6786 if (isListening(eventType)) { |
| 6787 StyledTextEvent event = new StyledTextEvent(content); | |
| 6788 event.detail = lineOffset; | |
| 6789 event.text = lineText; | |
| 6790 event.count = movement; | |
| 6791 event.start = offset; | |
| 6792 event.end = newOffset; | |
| 6793 notifyListeners(eventType, event); | |
| 6794 offset = event.end; | |
| 6795 if (offset !is newOffset) { | |
| 6796 int length = getCharCount(); | |
| 6797 if (offset < 0) { | |
| 6798 offset = 0; | |
| 6799 } else if (offset > length) { | |
| 6800 offset = length; | |
| 6801 } else { | |
| 6802 if (isLineDelimiter(offset)) { | |
| 6803 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 6804 } | |
| 6805 } | |
| 6806 } | |
| 6807 return offset; | |
| 6808 } | |
| 6809 return newOffset; | |
| 6810 } | |
| 6811 /** | |
| 6812 * Sets the alignment of the widget. The argument should be one of <code>DWT.LEFT</code>, | |
| 6813 * <code>DWT.CENTER</code> or <code>DWT.RIGHT</code>. The alignment applies for all lines. | |
| 213 | 6814 * </p><p> |
| 6815 * Note that if <code>DWT.MULTI</code> is set, then <code>DWT.WRAP</code> must also be set | |
| 6816 * in order to stabilize the right edge before setting alignment. | |
| 6817 * </p> | |
| 155 | 6818 * |
| 6819 * @param alignment the new alignment | |
| 6820 * | |
| 6821 * @exception DWTException <ul> | |
| 6822 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6823 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6824 * </ul> | |
| 6825 * | |
| 6826 * @see #setLineAlignment(int, int, int) | |
| 6827 * | |
| 6828 * @since 3.2 | |
| 6829 */ | |
| 6830 public void setAlignment(int alignment) { | |
| 6831 checkWidget(); | |
| 6832 alignment &= (DWT.LEFT | DWT.RIGHT | DWT.CENTER); | |
| 6833 if (alignment is 0 || this.alignment is alignment) return; | |
| 6834 this.alignment = alignment; | |
| 6835 resetCache(0, content.getLineCount()); | |
| 6836 setCaretLocation(); | |
| 6837 super.redraw(); | |
| 6838 } | |
| 6839 /** | |
| 6840 * @see Control#setBackground(Color) | |
| 6841 */ | |
| 6842 public override void setBackground(Color color) { | |
| 6843 checkWidget(); | |
| 6844 background = color; | |
| 213 | 6845 super.setBackground(color); |
| 155 | 6846 super.redraw(); |
| 6847 } | |
| 6848 /** | |
| 6849 * Sets the receiver's caret. Set the caret's height and location. | |
| 6850 * | |
| 6851 * </p> | |
| 6852 * @param caret the new caret for the receiver | |
| 6853 * | |
| 6854 * @exception DWTException <ul> | |
| 6855 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6856 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6857 * </ul> | |
| 6858 */ | |
| 6859 public override void setCaret(Caret caret) { | |
| 6860 checkWidget (); | |
| 6861 super.setCaret(caret); | |
| 6862 caretDirection = DWT.NULL; | |
| 6863 if (caret !is null) { | |
| 6864 setCaretLocation(); | |
| 6865 } | |
| 6866 } | |
| 6867 /** | |
| 6868 * Sets the BIDI coloring mode. When true the BIDI text display | |
| 6869 * algorithm is applied to segments of text that are the same | |
| 6870 * color. | |
| 6871 * | |
| 6872 * @param mode the new coloring mode | |
| 6873 * @exception DWTException <ul> | |
| 6874 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6875 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6876 * </ul> | |
| 6877 * | |
| 6878 * @deprecated use BidiSegmentListener instead. | |
| 6879 */ | |
| 6880 public void setBidiColoring(bool mode) { | |
| 6881 checkWidget(); | |
| 6882 bidiColoring = mode; | |
| 6883 } | |
| 6884 /** | |
| 6885 * Moves the Caret to the current caret offset. | |
| 6886 */ | |
| 6887 void setCaretLocation() { | |
| 6888 Point newCaretPos = getPointAtOffset(caretOffset); | |
| 6889 setCaretLocation(newCaretPos, getCaretDirection()); | |
| 6890 } | |
| 6891 void setCaretLocation(Point location, int direction) { | |
| 6892 Caret caret = getCaret(); | |
| 6893 if (caret !is null) { | |
| 6894 bool isDefaultCaret = caret is defaultCaret; | |
| 6895 int lineHeight = renderer.getLineHeight(); | |
| 6896 int caretHeight = lineHeight; | |
| 6897 if (!isFixedLineHeight() && isDefaultCaret) { | |
| 6898 caretHeight = getBoundsAtOffset(caretOffset).height; | |
| 6899 if (caretHeight !is lineHeight) { | |
| 6900 direction = DWT.DEFAULT; | |
| 6901 } | |
| 6902 } | |
| 6903 int imageDirection = direction; | |
| 6904 if (isMirrored()) { | |
| 6905 if (imageDirection is DWT.LEFT) { | |
| 6906 imageDirection = DWT.RIGHT; | |
| 6907 } else if (imageDirection is DWT.RIGHT) { | |
| 6908 imageDirection = DWT.LEFT; | |
| 6909 } | |
| 6910 } | |
| 6911 if (isDefaultCaret && imageDirection is DWT.RIGHT) { | |
| 6912 location.x -= (caret.getSize().x - 1); | |
| 6913 } | |
| 6914 if (isDefaultCaret) { | |
| 213 | 6915 caret.setBounds(location.x, location.y, caretWidth, caretHeight); |
| 155 | 6916 } else { |
| 6917 caret.setLocation(location); | |
| 6918 } | |
| 6919 getAccessible().textCaretMoved(getCaretOffset()); | |
| 6920 if (direction !is caretDirection) { | |
| 6921 caretDirection = direction; | |
| 6922 if (isDefaultCaret) { | |
| 6923 if (imageDirection is DWT.DEFAULT) { | |
| 6924 defaultCaret.setImage(null); | |
| 6925 } else if (imageDirection is DWT.LEFT) { | |
| 6926 defaultCaret.setImage(leftCaretBitmap); | |
| 6927 } else if (imageDirection is DWT.RIGHT) { | |
| 6928 defaultCaret.setImage(rightCaretBitmap); | |
| 6929 } | |
| 6930 } | |
| 6931 if (caretDirection is DWT.LEFT) { | |
| 6932 BidiUtil.setKeyboardLanguage(BidiUtil.KEYBOARD_NON_BIDI); | |
| 6933 } else if (caretDirection is DWT.RIGHT) { | |
| 6934 BidiUtil.setKeyboardLanguage(BidiUtil.KEYBOARD_BIDI); | |
| 6935 } | |
| 6936 } | |
| 6937 } | |
| 6938 columnX = location.x; | |
| 6939 } | |
| 6940 /** | |
| 6941 * Sets the caret offset. | |
| 6942 * | |
| 6943 * @param offset caret offset, relative to the first character in the text. | |
| 6944 * @exception DWTException <ul> | |
| 6945 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 6946 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 6947 * </ul> | |
| 6948 * @exception IllegalArgumentException <ul> | |
| 6949 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 6950 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 6951 * </ul> | |
| 6952 */ | |
| 6953 public void setCaretOffset(int offset) { | |
| 6954 checkWidget(); | |
| 6955 int length = getCharCount(); | |
| 6956 if (length > 0 && offset !is caretOffset) { | |
| 6957 if (offset < 0) { | |
| 6958 caretOffset = 0; | |
| 6959 } else if (offset > length) { | |
| 6960 caretOffset = length; | |
| 6961 } else { | |
| 6962 if (isLineDelimiter(offset)) { | |
| 6963 // offset is inside a multi byte line delimiter. This is an | |
| 6964 // illegal operation and an exception is thrown. Fixes 1GDKK3R | |
| 6965 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 6966 } | |
| 6967 caretOffset = offset; | |
| 6968 } | |
| 213 | 6969 caretAlignment = PREVIOUS_OFFSET_TRAILING; |
| 155 | 6970 // clear the selection if the caret is moved. |
| 6971 // don't notify listeners about the selection change. | |
| 6972 clearSelection(false); | |
| 6973 } | |
| 6974 setCaretLocation(); | |
| 6975 } | |
| 6976 /** | |
| 6977 * Copies the specified text range to the clipboard. The text will be placed | |
| 6978 * in the clipboard in plain text format and RTF format. | |
| 6979 * | |
| 6980 * @param start start index of the text | |
| 6981 * @param length length of text to place in clipboard | |
| 6982 * | |
| 6983 * @exception DWTError, see Clipboard.setContents | |
| 6984 * @see dwt.dnd.Clipboard#setContents | |
| 6985 */ | |
| 6986 void setClipboardContent(int start, int length, int clipboardType) { | |
| 6987 if (clipboardType is DND.SELECTION_CLIPBOARD && !(IS_MOTIF || IS_GTK)) return; | |
| 6988 TextTransfer plainTextTransfer = TextTransfer.getInstance(); | |
| 6989 TextWriter plainTextWriter = new TextWriter(start, length); | |
|
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parents:
197
diff
changeset
|
6990 String plainText = getPlatformDelimitedText(plainTextWriter); |
| 155 | 6991 Object[] data; |
| 6992 Transfer[] types; | |
| 6993 if (clipboardType is DND.SELECTION_CLIPBOARD) { | |
| 6994 data = [ cast(Object) new ArrayWrapperString(plainText) ]; | |
| 6995 types = [plainTextTransfer]; | |
| 6996 } else { | |
| 6997 RTFTransfer rtfTransfer = RTFTransfer.getInstance(); | |
| 6998 RTFWriter rtfWriter = new RTFWriter(start, length); | |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
6999 String rtfText = getPlatformDelimitedText(rtfWriter); |
| 155 | 7000 data = [ cast(Object) new ArrayWrapperString(rtfText), new ArrayWrapperString(plainText) ]; |
| 7001 types = [ cast(Transfer)rtfTransfer, plainTextTransfer]; | |
| 7002 } | |
| 7003 clipboard.setContents(data, types, clipboardType); | |
| 7004 } | |
| 7005 /** | |
| 7006 * Sets the content implementation to use for text storage. | |
| 7007 * | |
| 7008 * @param newContent StyledTextContent implementation to use for text storage. | |
| 7009 * @exception DWTException <ul> | |
| 7010 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7011 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7012 * </ul> | |
| 7013 * @exception IllegalArgumentException <ul> | |
| 7014 * <li>ERROR_NULL_ARGUMENT when listener is null</li> | |
| 7015 * </ul> | |
| 7016 */ | |
| 7017 public void setContent(StyledTextContent newContent) { | |
| 7018 checkWidget(); | |
| 7019 if (newContent is null) { | |
| 7020 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 7021 } | |
| 7022 if (content !is null) { | |
| 7023 content.removeTextChangeListener(textChangeListener); | |
| 7024 } | |
| 7025 content = newContent; | |
| 7026 content.addTextChangeListener(textChangeListener); | |
| 7027 reset(); | |
| 7028 } | |
| 7029 /** | |
| 7030 * Sets the receiver's cursor to the cursor specified by the | |
| 7031 * argument. Overridden to handle the null case since the | |
| 7032 * StyledText widget uses an ibeam as its default cursor. | |
| 7033 * | |
| 7034 * @see Control#setCursor(Cursor) | |
| 7035 */ | |
| 7036 public override void setCursor (Cursor cursor) { | |
| 7037 if (cursor is null) { | |
| 7038 Display display = getDisplay(); | |
| 7039 super.setCursor(display.getSystemCursor(DWT.CURSOR_IBEAM)); | |
| 7040 } else { | |
| 7041 super.setCursor(cursor); | |
| 7042 } | |
| 7043 } | |
| 7044 /** | |
| 7045 * Sets whether the widget : double click mouse behavior. | |
| 7046 * </p> | |
| 7047 * | |
| 7048 * @param enable if true double clicking a word selects the word, if false | |
| 7049 * double clicks have the same effect as regular mouse clicks. | |
| 7050 * @exception DWTException <ul> | |
| 7051 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7052 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7053 * </ul> | |
| 7054 */ | |
| 7055 public void setDoubleClickEnabled(bool enable) { | |
| 7056 checkWidget(); | |
| 7057 doubleClickEnabled = enable; | |
| 7058 } | |
| 7059 public override void setDragDetect (bool dragDetect_) { | |
| 7060 checkWidget (); | |
| 7061 this.dragDetect_ = dragDetect_; | |
| 7062 } | |
| 7063 /** | |
| 7064 * Sets whether the widget content can be edited. | |
| 7065 * </p> | |
| 7066 * | |
| 7067 * @param editable if true content can be edited, if false content can not be | |
| 7068 * edited | |
| 7069 * @exception DWTException <ul> | |
| 7070 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7071 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7072 * </ul> | |
| 7073 */ | |
| 7074 public void setEditable(bool editable) { | |
| 7075 checkWidget(); | |
| 7076 this.editable = editable; | |
| 7077 } | |
| 7078 /** | |
| 7079 * Sets a new font to render text with. | |
| 7080 * <p> | |
| 7081 * <b>NOTE:</b> Italic fonts are not supported unless they have no overhang | |
| 7082 * and the same baseline as regular fonts. | |
| 7083 * </p> | |
| 7084 * | |
| 7085 * @param font new font | |
| 7086 * @exception DWTException <ul> | |
| 7087 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7088 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7089 * </ul> | |
| 7090 */ | |
| 7091 public override void setFont(Font font) { | |
| 7092 checkWidget(); | |
| 7093 int oldLineHeight = renderer.getLineHeight(); | |
| 7094 super.setFont(font); | |
| 7095 renderer.setFont(getFont(), tabLength); | |
| 7096 // keep the same top line visible. fixes 5815 | |
| 7097 if (isFixedLineHeight()) { | |
| 7098 int lineHeight = renderer.getLineHeight(); | |
| 7099 if (lineHeight !is oldLineHeight) { | |
| 7100 int vscroll = (getVerticalScrollOffset() * lineHeight / oldLineHeight) - getVerticalScrollOffset(); | |
| 7101 scrollVertical(vscroll, true); | |
| 7102 } | |
| 7103 } | |
| 7104 resetCache(0, content.getLineCount()); | |
| 7105 claimBottomFreeSpace(); | |
| 7106 calculateScrollBars(); | |
| 7107 if (isBidiCaret()) createCaretBitmaps(); | |
| 7108 caretDirection = DWT.NULL; | |
| 7109 setCaretLocation(); | |
| 7110 super.redraw(); | |
| 7111 } | |
| 7112 /** | |
| 7113 * @see dwt.widgets.Control#setForeground | |
| 7114 */ | |
| 7115 public override void setForeground(Color color) { | |
| 7116 checkWidget(); | |
| 7117 foreground = color; | |
| 7118 super.setForeground(getForeground()); | |
| 7119 super.redraw(); | |
| 7120 } | |
| 7121 /** | |
| 7122 * Sets the horizontal scroll offset relative to the start of the line. | |
| 7123 * Do nothing if there is no text set. | |
| 7124 * <p> | |
| 7125 * <b>NOTE:</b> The horizontal index is reset to 0 when new text is set in the | |
| 7126 * widget. | |
| 7127 * </p> | |
| 7128 * | |
| 7129 * @param offset horizontal scroll offset relative to the start | |
| 7130 * of the line, measured in character increments starting at 0, if | |
| 7131 * equal to 0 the content is not scrolled, if > 0 = the content is scrolled. | |
| 7132 * @exception DWTException <ul> | |
| 7133 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7134 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7135 * </ul> | |
| 7136 */ | |
| 7137 public void setHorizontalIndex(int offset) { | |
| 7138 checkWidget(); | |
| 7139 if (getCharCount() is 0) { | |
| 7140 return; | |
| 7141 } | |
| 7142 if (offset < 0) { | |
| 7143 offset = 0; | |
| 7144 } | |
| 7145 offset *= getHorizontalIncrement(); | |
| 7146 // allow any value if client area width is unknown or 0. | |
| 7147 // offset will be checked in resize handler. | |
| 7148 // don't use isVisible since width is known even if widget | |
| 7149 // is temporarily invisible | |
| 7150 if (clientAreaWidth > 0) { | |
| 7151 int width = renderer.getWidth(); | |
| 7152 // prevent scrolling if the content fits in the client area. | |
| 7153 // align end of longest line with right border of client area | |
| 7154 // if offset is out of range. | |
| 7155 if (offset > width - clientAreaWidth) { | |
| 7156 offset = Math.max(0, width - clientAreaWidth); | |
| 7157 } | |
| 7158 } | |
| 7159 scrollHorizontal(offset - horizontalScrollOffset, true); | |
| 7160 } | |
| 7161 /** | |
| 7162 * Sets the horizontal pixel offset relative to the start of the line. | |
| 7163 * Do nothing if there is no text set. | |
| 7164 * <p> | |
| 7165 * <b>NOTE:</b> The horizontal pixel offset is reset to 0 when new text | |
| 7166 * is set in the widget. | |
| 7167 * </p> | |
| 7168 * | |
| 7169 * @param pixel horizontal pixel offset relative to the start | |
| 7170 * of the line. | |
| 7171 * @exception DWTException <ul> | |
| 7172 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7173 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7174 * </ul> | |
| 7175 * @since 2.0 | |
| 7176 */ | |
| 7177 public void setHorizontalPixel(int pixel) { | |
| 7178 checkWidget(); | |
| 7179 if (getCharCount() is 0) { | |
| 7180 return; | |
| 7181 } | |
| 7182 if (pixel < 0) { | |
| 7183 pixel = 0; | |
| 7184 } | |
| 7185 // allow any value if client area width is unknown or 0. | |
| 7186 // offset will be checked in resize handler. | |
| 7187 // don't use isVisible since width is known even if widget | |
| 7188 // is temporarily invisible | |
| 7189 if (clientAreaWidth > 0) { | |
| 7190 int width = renderer.getWidth(); | |
| 7191 // prevent scrolling if the content fits in the client area. | |
| 7192 // align end of longest line with right border of client area | |
| 7193 // if offset is out of range. | |
| 7194 if (pixel > width - clientAreaWidth) { | |
| 7195 pixel = Math.max(0, width - clientAreaWidth); | |
| 7196 } | |
| 7197 } | |
| 7198 scrollHorizontal(pixel - horizontalScrollOffset, true); | |
| 7199 } | |
| 7200 /** | |
| 7201 * Sets the line indentation of the widget. | |
| 7202 * <p> | |
| 7203 * It is the amount of blank space, in pixels, at the beginning of each line. | |
| 7204 * When a line wraps in several lines only the first one is indented. | |
| 7205 * </p> | |
| 7206 * | |
| 7207 * @param indent the new indent | |
| 7208 * | |
| 7209 * @exception DWTException <ul> | |
| 7210 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7211 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7212 * </ul> | |
| 7213 * | |
| 7214 * @see #setLineIndent(int, int, int) | |
| 7215 * | |
| 7216 * @since 3.2 | |
| 7217 */ | |
| 7218 public void setIndent(int indent) { | |
| 7219 checkWidget(); | |
| 7220 if (this.indent is indent || indent < 0) return; | |
| 7221 this.indent = indent; | |
| 7222 resetCache(0, content.getLineCount()); | |
| 7223 setCaretLocation(); | |
| 7224 super.redraw(); | |
| 7225 } | |
| 7226 /** | |
| 7227 * Sets whether the widget should justify lines. | |
| 7228 * | |
| 7229 * @param justify whether lines should be justified | |
| 7230 * | |
| 7231 * @exception DWTException <ul> | |
| 7232 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7233 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7234 * </ul> | |
| 7235 * | |
| 7236 * @see #setLineJustify(int, int, bool) | |
| 7237 * | |
| 7238 * @since 3.2 | |
| 7239 */ | |
| 7240 public void setJustify(bool justify) { | |
| 7241 checkWidget(); | |
| 7242 if (this.justify is justify) return; | |
| 7243 this.justify = justify; | |
| 7244 resetCache(0, content.getLineCount()); | |
| 7245 setCaretLocation(); | |
| 7246 super.redraw(); | |
| 7247 } | |
| 7248 /** | |
| 7249 * Maps a key to an action. | |
| 7250 * <p> | |
| 7251 * One action can be associated with N keys. However, each key can only | |
| 7252 * have one action (key:action is N:1 relation). | |
| 7253 * </p> | |
| 7254 * | |
| 7255 * @param key a key code defined in DWT.java or a character. | |
| 7256 * Optionally ORd with a state mask. Preferred state masks are one or more of | |
| 7257 * DWT.MOD1, DWT.MOD2, DWT.MOD3, since these masks account for modifier platform | |
| 7258 * differences. However, there may be cases where using the specific state masks | |
| 7259 * (i.e., DWT.CTRL, DWT.SHIFT, DWT.ALT, DWT.COMMAND) makes sense. | |
| 7260 * @param action one of the predefined actions defined in ST.java. | |
| 7261 * Use DWT.NULL to remove a key binding. | |
| 7262 * @exception DWTException <ul> | |
| 7263 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7264 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7265 * </ul> | |
| 7266 */ | |
| 7267 public void setKeyBinding(int key, int action) { | |
| 7268 checkWidget(); | |
| 7269 int modifierValue = key & DWT.MODIFIER_MASK; | |
| 7270 char keyChar = cast(char)(key & DWT.KEY_MASK); | |
| 7271 if (Compatibility.isLetter(keyChar)) { | |
| 7272 // make the keybinding case insensitive by adding it | |
| 7273 // in its upper and lower case form | |
| 7274 char ch = CharacterToUpper(keyChar); | |
| 7275 int newKey = ch | modifierValue; | |
| 7276 if (action is DWT.NULL) { | |
| 7277 keyActionMap.remove(newKey); | |
| 7278 } else { | |
| 7279 keyActionMap[newKey] = action; | |
| 7280 } | |
| 7281 ch = CharacterToLower(keyChar); | |
| 7282 newKey = ch | modifierValue; | |
| 7283 if (action is DWT.NULL) { | |
| 7284 keyActionMap.remove(newKey); | |
| 7285 } else { | |
| 7286 keyActionMap[newKey] = action; | |
| 7287 } | |
| 7288 } else { | |
| 7289 if (action is DWT.NULL) { | |
| 7290 keyActionMap.remove(key); | |
| 7291 } else { | |
| 7292 keyActionMap[key]=action; | |
| 7293 } | |
| 7294 } | |
| 7295 } | |
| 7296 /** | |
| 7297 * Sets the alignment of the specified lines. The argument should be one of <code>DWT.LEFT</code>, | |
| 7298 * <code>DWT.CENTER</code> or <code>DWT.RIGHT</code>. | |
| 213 | 7299 * <p><p> |
| 7300 * Note that if <code>DWT.MULTI</code> is set, then <code>DWT.WRAP</code> must also be set | |
| 7301 * in order to stabilize the right edge before setting alignment. | |
| 7302 * </p> | |
| 155 | 7303 * Should not be called if a LineStyleListener has been set since the listener |
| 7304 * maintains the line attributes. | |
| 7305 * </p><p> | |
| 7306 * All line attributes are maintained relative to the line text, not the | |
| 7307 * line index that is specified in this method call. | |
| 7308 * During text changes, when entire lines are inserted or removed, the line | |
| 7309 * attributes that are associated with the lines after the change | |
| 7310 * will "move" with their respective text. An entire line is defined as | |
| 7311 * extending from the first character on a line to the last and including the | |
| 7312 * line delimiter. | |
| 7313 * </p><p> | |
| 7314 * When two lines are joined by deleting a line delimiter, the top line | |
| 7315 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7316 * For all other text changes line attributes will remain unchanged. | |
| 7317 * | |
| 7318 * @param startLine first line the alignment is applied to, 0 based | |
| 7319 * @param lineCount number of lines the alignment applies to. | |
| 7320 * @param alignment line alignment | |
| 7321 * | |
| 7322 * @exception DWTException <ul> | |
| 7323 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7324 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7325 * </ul> | |
| 7326 * @exception IllegalArgumentException <ul> | |
| 7327 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7328 * </ul> | |
| 7329 * @see #setAlignment(int) | |
| 7330 * @since 3.2 | |
| 7331 */ | |
| 7332 public void setLineAlignment(int startLine, int lineCount, int alignment) { | |
| 7333 checkWidget(); | |
| 7334 if (isListening(LineGetStyle)) return; | |
| 7335 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7336 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7337 } | |
| 7338 | |
| 7339 renderer.setLineAlignment(startLine, lineCount, alignment); | |
| 7340 resetCache(startLine, lineCount); | |
| 7341 redrawLines(startLine, lineCount); | |
| 7342 int caretLine = getCaretLine(); | |
| 7343 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7344 setCaretLocation(); | |
| 7345 } | |
| 7346 } | |
| 7347 /** | |
| 7348 * Sets the background color of the specified lines. | |
| 7349 * <p> | |
| 7350 * The background color is drawn for the width of the widget. All | |
| 7351 * line background colors are discarded when setText is called. | |
| 7352 * The text background color if defined in a StyleRange overlays the | |
| 7353 * line background color. | |
| 7354 * </p><p> | |
| 7355 * Should not be called if a LineBackgroundListener has been set since the | |
| 7356 * listener maintains the line backgrounds. | |
| 7357 * </p><p> | |
| 7358 * All line attributes are maintained relative to the line text, not the | |
| 7359 * line index that is specified in this method call. | |
| 7360 * During text changes, when entire lines are inserted or removed, the line | |
| 7361 * attributes that are associated with the lines after the change | |
| 7362 * will "move" with their respective text. An entire line is defined as | |
| 7363 * extending from the first character on a line to the last and including the | |
| 7364 * line delimiter. | |
| 7365 * </p><p> | |
| 7366 * When two lines are joined by deleting a line delimiter, the top line | |
| 7367 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7368 * For all other text changes line attributes will remain unchanged. | |
| 7369 * </p> | |
| 7370 * | |
| 7371 * @param startLine first line the color is applied to, 0 based | |
| 7372 * @param lineCount number of lines the color applies to. | |
| 7373 * @param background line background color | |
| 7374 * @exception DWTException <ul> | |
| 7375 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7376 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7377 * </ul> | |
| 7378 * @exception IllegalArgumentException <ul> | |
| 7379 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7380 * </ul> | |
| 7381 */ | |
| 7382 public void setLineBackground(int startLine, int lineCount, Color background) { | |
| 7383 checkWidget(); | |
| 7384 if (isListening(LineGetBackground)) return; | |
| 7385 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7386 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7387 } | |
| 7388 if (background !is null) { | |
| 7389 renderer.setLineBackground(startLine, lineCount, background); | |
| 7390 } else { | |
| 7391 renderer.clearLineBackground(startLine, lineCount); | |
| 7392 } | |
| 7393 redrawLines(startLine, lineCount); | |
| 7394 } | |
| 7395 /** | |
| 7396 * Sets the bullet of the specified lines. | |
| 7397 * <p> | |
| 7398 * Should not be called if a LineStyleListener has been set since the listener | |
| 7399 * maintains the line attributes. | |
| 7400 * </p><p> | |
| 7401 * All line attributes are maintained relative to the line text, not the | |
| 7402 * line index that is specified in this method call. | |
| 7403 * During text changes, when entire lines are inserted or removed, the line | |
| 7404 * attributes that are associated with the lines after the change | |
| 7405 * will "move" with their respective text. An entire line is defined as | |
| 7406 * extending from the first character on a line to the last and including the | |
| 7407 * line delimiter. | |
| 7408 * </p><p> | |
| 7409 * When two lines are joined by deleting a line delimiter, the top line | |
| 7410 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7411 * For all other text changes line attributes will remain unchanged. | |
| 7412 * </p> | |
| 7413 * | |
| 7414 * @param startLine first line the bullet is applied to, 0 based | |
| 7415 * @param lineCount number of lines the bullet applies to. | |
| 7416 * @param bullet line bullet | |
| 7417 * | |
| 7418 * @exception DWTException <ul> | |
| 7419 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7420 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7421 * </ul> | |
| 7422 * @exception IllegalArgumentException <ul> | |
| 7423 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7424 * </ul> | |
| 7425 * @since 3.2 | |
| 7426 */ | |
| 7427 public void setLineBullet(int startLine, int lineCount, Bullet bullet) { | |
| 7428 checkWidget(); | |
| 7429 if (isListening(LineGetStyle)) return; | |
| 7430 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7431 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7432 } | |
| 7433 | |
| 7434 renderer.setLineBullet(startLine, lineCount, bullet); | |
| 7435 resetCache(startLine, lineCount); | |
| 7436 redrawLines(startLine, lineCount); | |
| 7437 int caretLine = getCaretLine(); | |
| 7438 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7439 setCaretLocation(); | |
| 7440 } | |
| 7441 } | |
| 7442 void setVariableLineHeight () { | |
| 7443 if (!fixedLineHeight) return; | |
| 7444 fixedLineHeight = false; | |
| 7445 renderer.calculateIdle(); | |
| 7446 } | |
| 7447 /** | |
| 7448 * Sets the indent of the specified lines. | |
| 7449 * <p> | |
| 7450 * Should not be called if a LineStyleListener has been set since the listener | |
| 7451 * maintains the line attributes. | |
| 7452 * </p><p> | |
| 7453 * All line attributes are maintained relative to the line text, not the | |
| 7454 * line index that is specified in this method call. | |
| 7455 * During text changes, when entire lines are inserted or removed, the line | |
| 7456 * attributes that are associated with the lines after the change | |
| 7457 * will "move" with their respective text. An entire line is defined as | |
| 7458 * extending from the first character on a line to the last and including the | |
| 7459 * line delimiter. | |
| 7460 * </p><p> | |
| 7461 * When two lines are joined by deleting a line delimiter, the top line | |
| 7462 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7463 * For all other text changes line attributes will remain unchanged. | |
| 7464 * </p> | |
| 7465 * | |
| 7466 * @param startLine first line the indent is applied to, 0 based | |
| 7467 * @param lineCount number of lines the indent applies to. | |
| 7468 * @param indent line indent | |
| 7469 * | |
| 7470 * @exception DWTException <ul> | |
| 7471 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7472 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7473 * </ul> | |
| 7474 * @exception IllegalArgumentException <ul> | |
| 7475 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7476 * </ul> | |
| 7477 * @see #setIndent(int) | |
| 7478 * @since 3.2 | |
| 7479 */ | |
| 7480 public void setLineIndent(int startLine, int lineCount, int indent) { | |
| 7481 checkWidget(); | |
| 7482 if (isListening(LineGetStyle)) return; | |
| 7483 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7484 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7485 } | |
| 7486 | |
| 7487 renderer.setLineIndent(startLine, lineCount, indent); | |
| 7488 resetCache(startLine, lineCount); | |
| 7489 redrawLines(startLine, lineCount); | |
| 7490 int caretLine = getCaretLine(); | |
| 7491 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7492 setCaretLocation(); | |
| 7493 } | |
| 7494 } | |
| 7495 /** | |
| 7496 * Sets the justify of the specified lines. | |
| 7497 * <p> | |
| 7498 * Should not be called if a LineStyleListener has been set since the listener | |
| 7499 * maintains the line attributes. | |
| 7500 * </p><p> | |
| 7501 * All line attributes are maintained relative to the line text, not the | |
| 7502 * line index that is specified in this method call. | |
| 7503 * During text changes, when entire lines are inserted or removed, the line | |
| 7504 * attributes that are associated with the lines after the change | |
| 7505 * will "move" with their respective text. An entire line is defined as | |
| 7506 * extending from the first character on a line to the last and including the | |
| 7507 * line delimiter. | |
| 7508 * </p><p> | |
| 7509 * When two lines are joined by deleting a line delimiter, the top line | |
| 7510 * attributes take precedence and the attributes of the bottom line are deleted. | |
| 7511 * For all other text changes line attributes will remain unchanged. | |
| 7512 * </p> | |
| 7513 * | |
| 7514 * @param startLine first line the justify is applied to, 0 based | |
| 7515 * @param lineCount number of lines the justify applies to. | |
| 7516 * @param justify true if lines should be justified | |
| 7517 * | |
| 7518 * @exception DWTException <ul> | |
| 7519 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7520 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7521 * </ul> | |
| 7522 * @exception IllegalArgumentException <ul> | |
| 7523 * <li>ERROR_INVALID_ARGUMENT when the specified line range is invalid</li> | |
| 7524 * </ul> | |
| 7525 * @see #setJustify(bool) | |
| 7526 * @since 3.2 | |
| 7527 */ | |
| 7528 public void setLineJustify(int startLine, int lineCount, bool justify) { | |
| 7529 checkWidget(); | |
| 7530 if (isListening(LineGetStyle)) return; | |
| 7531 if (startLine < 0 || startLine + lineCount > content.getLineCount()) { | |
| 7532 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7533 } | |
| 7534 | |
| 7535 renderer.setLineJustify(startLine, lineCount, justify); | |
| 7536 resetCache(startLine, lineCount); | |
| 7537 redrawLines(startLine, lineCount); | |
| 7538 int caretLine = getCaretLine(); | |
| 7539 if (startLine <= caretLine && caretLine < startLine + lineCount) { | |
| 7540 setCaretLocation(); | |
| 7541 } | |
| 7542 } | |
| 7543 /** | |
| 7544 * Sets the line spacing of the widget. The line spacing applies for all lines. | |
| 7545 * | |
| 7546 * @param lineSpacing the line spacing | |
| 7547 * @exception DWTException <ul> | |
| 7548 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7549 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7550 * </ul> | |
| 7551 * @since 3.2 | |
| 7552 */ | |
| 7553 public void setLineSpacing(int lineSpacing) { | |
| 7554 checkWidget(); | |
| 7555 if (this.lineSpacing is lineSpacing || lineSpacing < 0) return; | |
| 7556 this.lineSpacing = lineSpacing; | |
| 7557 setVariableLineHeight(); | |
| 7558 resetCache(0, content.getLineCount()); | |
| 7559 setCaretLocation(); | |
| 7560 super.redraw(); | |
| 7561 } | |
| 7562 void setMargins (int leftMargin, int topMargin, int rightMargin, int bottomMargin) { | |
| 7563 checkWidget(); | |
| 7564 this.leftMargin = leftMargin; | |
| 7565 this.topMargin = topMargin; | |
| 7566 this.rightMargin = rightMargin; | |
| 7567 this.bottomMargin = bottomMargin; | |
| 7568 setCaretLocation(); | |
| 7569 } | |
| 7570 /** | |
| 7571 * Flips selection anchor based on word selection direction. | |
| 7572 */ | |
| 7573 void setMouseWordSelectionAnchor() { | |
| 7574 if (clickCount > 1) { | |
| 7575 if (caretOffset < doubleClickSelection.x) { | |
| 7576 selectionAnchor = doubleClickSelection.y; | |
| 7577 } else if (caretOffset > doubleClickSelection.y) { | |
| 7578 selectionAnchor = doubleClickSelection.x; | |
| 7579 } | |
| 7580 } | |
| 7581 } | |
| 7582 /** | |
| 7583 * Sets the orientation of the receiver, which must be one | |
| 7584 * of the constants <code>DWT.LEFT_TO_RIGHT</code> or <code>DWT.RIGHT_TO_LEFT</code>. | |
| 7585 * | |
| 7586 * @param orientation new orientation style | |
| 7587 * | |
| 7588 * @exception DWTException <ul> | |
| 7589 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7590 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7591 * </ul> | |
| 7592 * | |
| 7593 * @since 2.1.2 | |
| 7594 */ | |
| 7595 public void setOrientation(int orientation) { | |
| 7596 if ((orientation & (DWT.RIGHT_TO_LEFT | DWT.LEFT_TO_RIGHT)) is 0) { | |
| 7597 return; | |
| 7598 } | |
| 7599 if ((orientation & DWT.RIGHT_TO_LEFT) !is 0 && (orientation & DWT.LEFT_TO_RIGHT) !is 0) { | |
| 7600 return; | |
| 7601 } | |
| 7602 if ((orientation & DWT.RIGHT_TO_LEFT) !is 0 && isMirrored()) { | |
| 7603 return; | |
| 7604 } | |
| 7605 if ((orientation & DWT.LEFT_TO_RIGHT) !is 0 && !isMirrored()) { | |
| 7606 return; | |
| 7607 } | |
| 213 | 7608 if (!BidiUtil.setOrientation(this, orientation)) { |
| 155 | 7609 return; |
| 7610 } | |
| 7611 isMirrored_ = (orientation & DWT.RIGHT_TO_LEFT) !is 0; | |
| 7612 caretDirection = DWT.NULL; | |
| 7613 resetCache(0, content.getLineCount()); | |
| 7614 setCaretLocation(); | |
| 7615 keyActionMap = null; | |
| 7616 createKeyBindings(); | |
| 7617 super.redraw(); | |
| 7618 } | |
| 7619 /** | |
| 7620 * Adjusts the maximum and the page size of the scroll bars to | |
| 7621 * reflect content width/length changes. | |
| 7622 * | |
| 7623 * @param vertical indicates if the vertical scrollbar also needs to be set | |
| 7624 */ | |
| 7625 void setScrollBars(bool vertical) { | |
| 7626 int inactive = 1; | |
| 7627 if (vertical || !isFixedLineHeight()) { | |
| 7628 ScrollBar verticalBar = getVerticalBar(); | |
| 7629 if (verticalBar !is null) { | |
| 7630 int maximum = renderer.getHeight(); | |
| 7631 // only set the real values if the scroll bar can be used | |
| 7632 // (ie. because the thumb size is less than the scroll maximum) | |
| 7633 // avoids flashing on Motif, fixes 1G7RE1J and 1G5SE92 | |
| 7634 if (clientAreaHeight < maximum) { | |
| 7635 verticalBar.setMaximum(maximum); | |
| 7636 verticalBar.setThumb(clientAreaHeight); | |
| 7637 verticalBar.setPageIncrement(clientAreaHeight); | |
| 7638 } else if (verticalBar.getThumb() !is inactive || verticalBar.getMaximum() !is inactive) { | |
| 7639 verticalBar.setValues( | |
| 7640 verticalBar.getSelection(), | |
| 7641 verticalBar.getMinimum(), | |
| 7642 inactive, | |
| 7643 inactive, | |
| 7644 verticalBar.getIncrement(), | |
| 7645 inactive); | |
| 7646 } | |
| 7647 } | |
| 7648 } | |
| 7649 ScrollBar horizontalBar = getHorizontalBar(); | |
| 7650 if (horizontalBar !is null && horizontalBar.getVisible()) { | |
| 7651 int maximum = renderer.getWidth(); | |
| 7652 // only set the real values if the scroll bar can be used | |
| 7653 // (ie. because the thumb size is less than the scroll maximum) | |
| 7654 // avoids flashing on Motif, fixes 1G7RE1J and 1G5SE92 | |
| 7655 if (clientAreaWidth < maximum) { | |
| 7656 horizontalBar.setMaximum(maximum); | |
| 7657 horizontalBar.setThumb(clientAreaWidth - leftMargin - rightMargin); | |
| 7658 horizontalBar.setPageIncrement(clientAreaWidth - leftMargin - rightMargin); | |
| 7659 } else if (horizontalBar.getThumb() !is inactive || horizontalBar.getMaximum() !is inactive) { | |
| 7660 horizontalBar.setValues( | |
| 7661 horizontalBar.getSelection(), | |
| 7662 horizontalBar.getMinimum(), | |
| 7663 inactive, | |
| 7664 inactive, | |
| 7665 horizontalBar.getIncrement(), | |
| 7666 inactive); | |
| 7667 } | |
| 7668 } | |
| 7669 } | |
| 7670 /** | |
| 7671 * Sets the selection to the given position and scrolls it into view. Equivalent to setSelection(start,start). | |
| 7672 * | |
| 7673 * @param start new caret position | |
| 7674 * @see #setSelection(int,int) | |
| 7675 * @exception DWTException <ul> | |
| 7676 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7677 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7678 * </ul> | |
| 7679 * @exception IllegalArgumentException <ul> | |
| 7680 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7681 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7682 * </ul> | |
| 7683 */ | |
| 7684 public void setSelection(int start) { | |
| 7685 // checkWidget test done in setSelectionRange | |
| 7686 setSelection(start, start); | |
| 7687 } | |
| 7688 /** | |
| 7689 * Sets the selection and scrolls it into view. | |
| 7690 * <p> | |
| 7691 * Indexing is zero based. Text selections are specified in terms of | |
| 7692 * caret positions. In a text widget that contains N characters, there are | |
| 7693 * N+1 caret positions, ranging from 0..N | |
| 7694 * </p> | |
| 7695 * | |
| 7696 * @param point x=selection start offset, y=selection end offset | |
| 7697 * The caret will be placed at the selection start when x > y. | |
| 7698 * @see #setSelection(int,int) | |
| 7699 * @exception DWTException <ul> | |
| 7700 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7701 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7702 * </ul> | |
| 7703 * @exception IllegalArgumentException <ul> | |
| 7704 * <li>ERROR_NULL_ARGUMENT when point is null</li> | |
| 7705 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7706 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7707 * </ul> | |
| 7708 */ | |
| 7709 public void setSelection(Point point) { | |
| 7710 checkWidget(); | |
| 7711 if (point is null) DWT.error (DWT.ERROR_NULL_ARGUMENT); | |
| 7712 setSelection(point.x, point.y); | |
| 7713 } | |
| 7714 /** | |
| 7715 * Sets the receiver's selection background color to the color specified | |
| 7716 * by the argument, or to the default system color for the control | |
| 7717 * if the argument is null. | |
| 7718 * | |
| 7719 * @param color the new color (or null) | |
| 7720 * | |
| 7721 * @exception IllegalArgumentException <ul> | |
| 7722 * <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li> | |
| 7723 * </ul> | |
| 7724 * @exception DWTException <ul> | |
| 7725 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7726 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7727 * </ul> | |
| 7728 * @since 2.1 | |
| 7729 */ | |
| 7730 public void setSelectionBackground (Color color) { | |
| 7731 checkWidget (); | |
| 7732 if (color !is null) { | |
| 7733 if (color.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7734 } | |
| 7735 selectionBackground = color; | |
| 7736 super.redraw(); | |
| 7737 } | |
| 7738 /** | |
| 7739 * Sets the receiver's selection foreground color to the color specified | |
| 7740 * by the argument, or to the default system color for the control | |
| 7741 * if the argument is null. | |
| 7742 * <p> | |
| 7743 * Note that this is a <em>HINT</em>. Some platforms do not allow the application | |
| 7744 * to change the selection foreground color. | |
| 7745 * </p> | |
| 7746 * @param color the new color (or null) | |
| 7747 * | |
| 7748 * @exception IllegalArgumentException <ul> | |
| 7749 * <li>ERROR_INVALID_ARGUMENT - if the argument has been disposed</li> | |
| 7750 * </ul> | |
| 7751 * @exception DWTException <ul> | |
| 7752 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7753 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7754 * </ul> | |
| 7755 * @since 2.1 | |
| 7756 */ | |
| 7757 public void setSelectionForeground (Color color) { | |
| 7758 checkWidget (); | |
| 7759 if (color !is null) { | |
| 7760 if (color.isDisposed()) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7761 } | |
| 7762 selectionForeground = color; | |
| 7763 super.redraw(); | |
| 7764 } | |
| 7765 /** | |
| 7766 * Sets the selection and scrolls it into view. | |
| 7767 * <p> | |
| 7768 * Indexing is zero based. Text selections are specified in terms of | |
| 7769 * caret positions. In a text widget that contains N characters, there are | |
| 7770 * N+1 caret positions, ranging from 0..N | |
| 7771 * </p> | |
| 7772 * | |
| 7773 * @param start selection start offset. The caret will be placed at the | |
| 7774 * selection start when start > end. | |
| 7775 * @param end selection end offset | |
| 7776 * @see #setSelectionRange(int,int) | |
| 7777 * @exception DWTException <ul> | |
| 7778 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7779 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7780 * </ul> | |
| 7781 * @exception IllegalArgumentException <ul> | |
| 7782 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7783 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7784 * </ul> | |
| 7785 */ | |
| 7786 public void setSelection(int start, int end) { | |
| 7787 setSelectionRange(start, end - start); | |
| 7788 showSelection(); | |
| 7789 } | |
| 7790 /** | |
| 7791 * Sets the selection. | |
| 7792 * <p> | |
| 7793 * The new selection may not be visible. Call showSelection to scroll | |
| 7794 * the selection into view. | |
| 7795 * </p> | |
| 7796 * | |
| 7797 * @param start offset of the first selected character, start >= 0 must be true. | |
| 7798 * @param length number of characters to select, 0 <= start + length | |
| 7799 * <= getCharCount() must be true. | |
| 7800 * A negative length places the caret at the selection start. | |
| 7801 * @param sendEvent a Selection event is sent when set to true and when | |
| 7802 * the selection is reset. | |
| 7803 */ | |
| 7804 void setSelection(int start, int length, bool sendEvent) { | |
| 7805 int end = start + length; | |
| 7806 if (start > end) { | |
| 7807 int temp = end; | |
| 7808 end = start; | |
| 7809 start = temp; | |
| 7810 } | |
| 7811 // is the selection range different or is the selection direction | |
| 7812 // different? | |
| 7813 if (selection.x !is start || selection.y !is end || | |
| 7814 (length > 0 && selectionAnchor !is selection.x) || | |
| 7815 (length < 0 && selectionAnchor !is selection.y)) { | |
| 7816 clearSelection(sendEvent); | |
| 7817 if (length < 0) { | |
| 7818 selectionAnchor = selection.y = end; | |
| 7819 caretOffset = selection.x = start; | |
| 7820 } else { | |
| 7821 selectionAnchor = selection.x = start; | |
| 7822 caretOffset = selection.y = end; | |
| 7823 } | |
| 213 | 7824 caretAlignment = PREVIOUS_OFFSET_TRAILING; |
| 155 | 7825 internalRedrawRange(selection.x, selection.y - selection.x); |
| 7826 } | |
| 7827 } | |
| 7828 /** | |
| 7829 * Sets the selection. | |
| 7830 * <p> | |
| 7831 * The new selection may not be visible. Call showSelection to scroll the selection | |
| 7832 * into view. A negative length places the caret at the visual start of the selection. | |
| 7833 * </p> | |
| 7834 * | |
| 7835 * @param start offset of the first selected character | |
| 7836 * @param length number of characters to select | |
| 7837 * | |
| 7838 * @exception DWTException <ul> | |
| 7839 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7840 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7841 * </ul> | |
| 7842 * @exception IllegalArgumentException <ul> | |
| 7843 * <li>ERROR_INVALID_ARGUMENT when either the start or the end of the selection range is inside a | |
| 7844 * multi byte line delimiter (and thus neither clearly in front of or after the line delimiter) | |
| 7845 * </ul> | |
| 7846 */ | |
| 7847 public void setSelectionRange(int start, int length) { | |
| 7848 checkWidget(); | |
| 7849 int contentLength = getCharCount(); | |
| 7850 start = Math.max(0, Math.min (start, contentLength)); | |
| 7851 int end = start + length; | |
| 7852 if (end < 0) { | |
| 7853 length = -start; | |
| 7854 } else { | |
| 7855 if (end > contentLength) length = contentLength - start; | |
| 7856 } | |
| 7857 if (isLineDelimiter(start) || isLineDelimiter(start + length)) { | |
| 7858 // the start offset or end offset of the selection range is inside a | |
| 7859 // multi byte line delimiter. This is an illegal operation and an exception | |
| 7860 // is thrown. Fixes 1GDKK3R | |
| 7861 DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 7862 } | |
| 7863 setSelection(start, length, false); | |
| 7864 setCaretLocation(); | |
| 7865 } | |
| 7866 /** | |
| 7867 * Adds the specified style. | |
| 7868 * <p> | |
| 7869 * The new style overwrites existing styles for the specified range. | |
| 7870 * Existing style ranges are adjusted if they partially overlap with | |
| 7871 * the new style. To clear an individual style, call setStyleRange | |
| 7872 * with a StyleRange that has null attributes. | |
| 7873 * </p><p> | |
| 7874 * Should not be called if a LineStyleListener has been set since the | |
| 7875 * listener maintains the styles. | |
| 7876 * </p> | |
| 7877 * | |
| 7878 * @param range StyleRange object containing the style information. | |
| 7879 * Overwrites the old style in the given range. May be null to delete | |
| 7880 * all styles. | |
| 7881 * @exception DWTException <ul> | |
| 7882 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7883 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7884 * </ul> | |
| 7885 * @exception IllegalArgumentException <ul> | |
| 7886 * <li>ERROR_INVALID_RANGE when the style range is outside the valid range (> getCharCount())</li> | |
| 7887 * </ul> | |
| 7888 */ | |
| 7889 public void setStyleRange(StyleRange range) { | |
| 7890 checkWidget(); | |
| 7891 if (isListening(LineGetStyle)) return; | |
| 7892 if (range !is null) { | |
| 7893 if (range.isUnstyled()) { | |
| 7894 setStyleRanges(range.start, range.length, null, null, false); | |
| 7895 } else { | |
| 7896 setStyleRanges(range.start, 0, null, [range], false); | |
| 7897 } | |
| 7898 } else { | |
| 7899 setStyleRanges(0, 0, null, null, true); | |
| 7900 } | |
| 7901 } | |
| 7902 /** | |
| 7903 * Clears the styles in the range specified by <code>start</code> and | |
| 7904 * <code>length</code> and adds the new styles. | |
| 7905 * <p> | |
| 7906 * The ranges array contains start and length pairs. Each pair refers to | |
| 7907 * the corresponding style in the styles array. For example, the pair | |
| 7908 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 7909 * at styles[n/2]. The range fields within each StyleRange are ignored. | |
| 7910 * If ranges or styles is null, the specified range is cleared. | |
| 7911 * </p><p> | |
| 7912 * Note: It is expected that the same instance of a StyleRange will occur | |
| 7913 * multiple times within the styles array, reducing memory usage. | |
| 7914 * </p><p> | |
| 7915 * Should not be called if a LineStyleListener has been set since the | |
| 7916 * listener maintains the styles. | |
| 7917 * </p> | |
| 7918 * | |
| 7919 * @param start offset of first character where styles will be deleted | |
| 7920 * @param length length of the range to delete styles in | |
| 7921 * @param ranges the array of ranges. The ranges must not overlap and must be in order. | |
| 7922 * @param styles the array of StyleRanges. The range fields within the StyleRange are unused. | |
| 7923 * | |
| 7924 * @exception DWTException <ul> | |
| 7925 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7926 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7927 * </ul> | |
| 7928 * @exception IllegalArgumentException <ul> | |
| 7929 * <li>ERROR_NULL_ARGUMENT when an element in the styles array is null</li> | |
| 7930 * <li>ERROR_INVALID_RANGE when the number of ranges and style do not match (ranges.length * 2 is styles.length)</li> | |
| 7931 * <li>ERROR_INVALID_RANGE when a range is outside the valid range (> getCharCount() or less than zero)</li> | |
| 7932 * <li>ERROR_INVALID_RANGE when a range overlaps</li> | |
| 7933 * </ul> | |
| 7934 * | |
| 7935 * @since 3.2 | |
| 7936 */ | |
| 7937 public void setStyleRanges(int start, int length, int[] ranges, StyleRange[] styles) { | |
| 7938 checkWidget(); | |
| 7939 if (isListening(LineGetStyle)) return; | |
| 7940 if (ranges is null || styles is null) { | |
| 7941 setStyleRanges(start, length, null, null, false); | |
| 7942 } else { | |
| 7943 setStyleRanges(start, length, ranges, styles, false); | |
| 7944 } | |
| 7945 } | |
| 7946 /** | |
| 7947 * Sets styles to be used for rendering the widget content. | |
| 7948 * <p> | |
| 7949 * All styles in the widget will be replaced with the given set of ranges and styles. | |
| 7950 * The ranges array contains start and length pairs. Each pair refers to | |
| 7951 * the corresponding style in the styles array. For example, the pair | |
| 7952 * that starts at ranges[n] with length ranges[n+1] uses the style | |
| 7953 * at styles[n/2]. The range fields within each StyleRange are ignored. | |
| 7954 * If either argument is null, the styles are cleared. | |
| 7955 * </p><p> | |
| 7956 * Note: It is expected that the same instance of a StyleRange will occur | |
| 7957 * multiple times within the styles array, reducing memory usage. | |
| 7958 * </p><p> | |
| 7959 * Should not be called if a LineStyleListener has been set since the | |
| 7960 * listener maintains the styles. | |
| 7961 * </p> | |
| 7962 * | |
| 7963 * @param ranges the array of ranges. The ranges must not overlap and must be in order. | |
| 7964 * @param styles the array of StyleRanges. The range fields within the StyleRange are unused. | |
| 7965 * | |
| 7966 * @exception DWTException <ul> | |
| 7967 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 7968 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 7969 * </ul> | |
| 7970 * @exception IllegalArgumentException <ul> | |
| 7971 * <li>ERROR_NULL_ARGUMENT when an element in the styles array is null</li> | |
| 7972 * <li>ERROR_INVALID_RANGE when the number of ranges and style do not match (ranges.length * 2 is styles.length)</li> | |
| 7973 * <li>ERROR_INVALID_RANGE when a range is outside the valid range (> getCharCount() or less than zero)</li> | |
| 7974 * <li>ERROR_INVALID_RANGE when a range overlaps</li> | |
| 7975 * </ul> | |
| 7976 * | |
| 7977 * @since 3.2 | |
| 7978 */ | |
| 7979 public void setStyleRanges(int[] ranges, StyleRange[] styles) { | |
| 7980 checkWidget(); | |
| 7981 if (isListening(LineGetStyle)) return; | |
| 7982 if (ranges is null || styles is null) { | |
| 7983 setStyleRanges(0, 0, null, null, true); | |
| 7984 } else { | |
| 7985 setStyleRanges(0, 0, ranges, styles, true); | |
| 7986 } | |
| 7987 } | |
| 7988 void setStyleRanges(int start, int length, int[] ranges, StyleRange[] styles, bool reset) { | |
| 7989 int charCount = content.getCharCount(); | |
| 7990 int end = start + length; | |
| 7991 if (start > end || start < 0) { | |
| 7992 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 7993 } | |
| 7994 if (styles !is null) { | |
| 7995 if (end > charCount) { | |
| 7996 DWT.error(DWT.ERROR_INVALID_RANGE); | |
| 7997 } | |
| 7998 if (ranges !is null) { | |
| 7999 if (ranges.length !is styles.length << 1) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 8000 } | |
| 8001 int lastOffset = 0; | |
| 8002 bool variableHeight = false; | |
| 8003 for (int i = 0; i < styles.length; i ++) { | |
| 8004 if (styles[i] is null) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 8005 int rangeStart, rangeLength; | |
| 8006 if (ranges !is null) { | |
| 8007 rangeStart = ranges[i << 1]; | |
| 8008 rangeLength = ranges[(i << 1) + 1]; | |
| 8009 } else { | |
| 8010 rangeStart = styles[i].start; | |
| 8011 rangeLength = styles[i].length; | |
| 8012 } | |
| 8013 if (rangeLength < 0) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 8014 if (!(0 <= rangeStart && rangeStart + rangeLength <= charCount)) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 8015 if (lastOffset > rangeStart) DWT.error(DWT.ERROR_INVALID_ARGUMENT); | |
| 8016 variableHeight |= styles[i].isVariableHeight(); | |
| 8017 lastOffset = rangeStart + rangeLength; | |
| 8018 } | |
| 8019 if (variableHeight) setVariableLineHeight(); | |
| 8020 } | |
| 8021 int rangeStart = start, rangeEnd = end; | |
| 8022 if (styles !is null && styles.length > 0) { | |
| 8023 if (ranges !is null) { | |
| 8024 rangeStart = ranges[0]; | |
| 8025 rangeEnd = ranges[ranges.length - 2] + ranges[ranges.length - 1]; | |
| 8026 } else { | |
| 8027 rangeStart = styles[0].start; | |
| 8028 rangeEnd = styles[styles.length - 1].start + styles[styles.length - 1].length; | |
| 8029 } | |
| 8030 } | |
| 8031 int lastLineBottom = 0; | |
| 8032 if (!isFixedLineHeight() && !reset) { | |
| 8033 int lineEnd = content.getLineAtOffset(Math.max(end, rangeEnd)); | |
| 8034 int partialTopIndex = getPartialTopIndex(); | |
| 8035 int partialBottomIndex = getPartialBottomIndex(); | |
| 8036 if (partialTopIndex <= lineEnd && lineEnd <= partialBottomIndex) { | |
| 8037 lastLineBottom = getLinePixel(lineEnd + 1); | |
| 8038 } | |
| 8039 } | |
| 8040 if (reset) { | |
| 8041 renderer.setStyleRanges(null, null); | |
| 8042 } else { | |
| 8043 renderer.updateRanges(start, length, length); | |
| 8044 } | |
| 8045 if (styles !is null && styles.length > 0) { | |
| 8046 renderer.setStyleRanges(ranges, styles); | |
| 8047 } | |
| 8048 if (reset) { | |
| 8049 resetCache(0, content.getLineCount()); | |
| 8050 super.redraw(); | |
| 8051 } else { | |
| 8052 int lineStart = content.getLineAtOffset(Math.min(start, rangeStart)); | |
| 8053 int lineEnd = content.getLineAtOffset(Math.max(end, rangeEnd)); | |
| 8054 resetCache(lineStart, lineEnd - lineStart + 1); | |
| 8055 int partialTopIndex = getPartialTopIndex(); | |
| 8056 int partialBottomIndex = getPartialBottomIndex(); | |
| 8057 if (!(lineStart > partialBottomIndex || lineEnd < partialTopIndex)) { | |
| 8058 int y = 0; | |
| 8059 int height = clientAreaHeight; | |
| 8060 if (partialTopIndex <= lineStart && lineStart <= partialBottomIndex) { | |
| 8061 int lineTop = Math.max(y, getLinePixel(lineStart)); | |
| 8062 y = lineTop; | |
| 8063 height -= lineTop; | |
| 8064 } | |
| 8065 if (partialTopIndex <= lineEnd && lineEnd <= partialBottomIndex) { | |
| 8066 int newLastLineBottom = getLinePixel(lineEnd + 1); | |
| 8067 if (!isFixedLineHeight()) { | |
| 8068 scrollText(lastLineBottom, newLastLineBottom); | |
| 8069 } | |
| 8070 height = newLastLineBottom - y; | |
| 8071 } | |
| 8072 super.redraw(0, y, clientAreaWidth, height, false); | |
| 8073 } | |
| 8074 } | |
| 8075 setCaretLocation(); | |
| 8076 } | |
| 8077 /** | |
| 8078 * Sets styles to be used for rendering the widget content. All styles | |
| 8079 * in the widget will be replaced with the given set of styles. | |
| 8080 * <p> | |
| 8081 * Note: Because a StyleRange includes the start and length, the | |
| 8082 * same instance cannot occur multiple times in the array of styles. | |
| 8083 * If the same style attributes, such as font and color, occur in | |
| 8084 * multiple StyleRanges, <code>setStyleRanges(int[], StyleRange[])</code> | |
| 8085 * can be used to share styles and reduce memory usage. | |
| 8086 * </p><p> | |
| 8087 * Should not be called if a LineStyleListener has been set since the | |
| 8088 * listener maintains the styles. | |
| 8089 * </p> | |
| 8090 * | |
| 8091 * @param ranges StyleRange objects containing the style information. | |
| 8092 * The ranges should not overlap. The style rendering is undefined if | |
| 8093 * the ranges do overlap. Must not be null. The styles need to be in order. | |
| 8094 * @exception DWTException <ul> | |
| 8095 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8096 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8097 * </ul> | |
| 8098 * @exception IllegalArgumentException <ul> | |
| 8099 * <li>ERROR_NULL_ARGUMENT when the list of ranges is null</li> | |
| 8100 * <li>ERROR_INVALID_RANGE when the last of the style ranges is outside the valid range (> getCharCount())</li> | |
| 8101 * </ul> | |
| 8102 * | |
| 8103 * @see #setStyleRanges(int[], StyleRange[]) | |
| 8104 */ | |
| 8105 public void setStyleRanges(StyleRange[] ranges) { | |
| 8106 checkWidget(); | |
| 8107 if (isListening(LineGetStyle)) return; | |
| 8108 if (ranges is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 8109 setStyleRanges(0, 0, null, ranges, true); | |
| 8110 } | |
| 8111 /** | |
| 8112 * Sets the tab width. | |
| 8113 * | |
| 8114 * @param tabs tab width measured in characters. | |
| 8115 * @exception DWTException <ul> | |
| 8116 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8117 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8118 * </ul> | |
| 8119 */ | |
| 8120 public void setTabs(int tabs) { | |
| 8121 checkWidget(); | |
| 8122 tabLength = tabs; | |
| 8123 renderer.setFont(null, tabs); | |
| 8124 resetCache(0, content.getLineCount()); | |
| 213 | 8125 setCaretLocation(); |
| 155 | 8126 super.redraw(); |
| 8127 } | |
| 8128 /** | |
| 8129 * Sets the widget content. | |
| 8130 * If the widget has the DWT.SINGLE style and "text" contains more than | |
| 8131 * one line, only the first line is rendered but the text is stored | |
| 8132 * unchanged. A subsequent call to getText will return the same text | |
| 8133 * that was set. | |
| 8134 * <p> | |
| 8135 * <b>Note:</b> Only a single line of text should be set when the DWT.SINGLE | |
| 8136 * style is used. | |
| 8137 * </p> | |
| 8138 * | |
| 8139 * @param text new widget content. Replaces existing content. Line styles | |
| 8140 * that were set using StyledText API are discarded. The | |
| 8141 * current selection is also discarded. | |
| 8142 * @exception DWTException <ul> | |
| 8143 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8144 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8145 * </ul> | |
| 8146 * @exception IllegalArgumentException <ul> | |
| 8147 * <li>ERROR_NULL_ARGUMENT when string is null</li> | |
| 8148 * </ul> | |
| 8149 */ | |
|
212
ab60f3309436
reverted the char[] to String and use the an alias.
Frank Benoit <benoit@tionex.de>
parents:
197
diff
changeset
|
8150 public void setText(String text) { |
| 155 | 8151 checkWidget(); |
| 8152 if (text is null) { | |
| 8153 DWT.error(DWT.ERROR_NULL_ARGUMENT); | |
| 8154 } | |
| 8155 Event event = new Event(); | |
| 8156 event.start = 0; | |
| 8157 event.end = getCharCount(); | |
| 8158 event.text = text; | |
| 8159 event.doit = true; | |
| 8160 notifyListeners(DWT.Verify, event); | |
| 8161 if (event.doit) { | |
| 8162 StyledTextEvent styledTextEvent = null; | |
| 8163 if (isListening(ExtendedModify)) { | |
| 8164 styledTextEvent = new StyledTextEvent(content); | |
| 8165 styledTextEvent.start = event.start; | |
| 8166 styledTextEvent.end = event.start + event.text.length; | |
| 8167 styledTextEvent.text = content.getTextRange(event.start, event.end - event.start); | |
| 8168 } | |
| 8169 content.setText(event.text); | |
| 8170 sendModifyEvent(event); | |
| 8171 if (styledTextEvent !is null) { | |
| 8172 notifyListeners(ExtendedModify, styledTextEvent); | |
| 8173 } | |
| 8174 } | |
| 8175 } | |
| 8176 /** | |
| 8177 * Sets the text limit to the specified number of characters. | |
| 8178 * <p> | |
| 8179 * The text limit specifies the amount of text that | |
| 8180 * the user can type into the widget. | |
| 8181 * </p> | |
| 8182 * | |
| 8183 * @param limit the new text limit. | |
| 8184 * @exception DWTException <ul> | |
| 8185 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8186 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8187 * </ul> | |
| 8188 * @exception IllegalArgumentException <ul> | |
| 8189 * <li>ERROR_CANNOT_BE_ZERO when limit is 0</li> | |
| 8190 * </ul> | |
| 8191 */ | |
| 8192 public void setTextLimit(int limit) { | |
| 8193 checkWidget(); | |
| 8194 if (limit is 0) { | |
| 8195 DWT.error(DWT.ERROR_CANNOT_BE_ZERO); | |
| 8196 } | |
| 8197 textLimit = limit; | |
| 8198 } | |
| 8199 /** | |
| 8200 * Sets the top index. Do nothing if there is no text set. | |
| 8201 * <p> | |
| 8202 * The top index is the index of the line that is currently at the top | |
| 8203 * of the widget. The top index changes when the widget is scrolled. | |
| 8204 * Indexing starts from zero. | |
| 8205 * Note: The top index is reset to 0 when new text is set in the widget. | |
| 8206 * </p> | |
| 8207 * | |
| 8208 * @param topIndex new top index. Must be between 0 and | |
| 8209 * getLineCount() - fully visible lines per page. If no lines are fully | |
| 8210 * visible the maximum value is getLineCount() - 1. An out of range | |
| 8211 * index will be adjusted accordingly. | |
| 8212 * @exception DWTException <ul> | |
| 8213 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8214 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8215 * </ul> | |
| 8216 */ | |
| 8217 public void setTopIndex(int topIndex) { | |
| 8218 checkWidget(); | |
| 8219 if (getCharCount() is 0) { | |
| 8220 return; | |
| 8221 } | |
| 8222 int lineCount = content.getLineCount(), pixel; | |
| 8223 if (isFixedLineHeight()) { | |
| 8224 int pageSize = Math.max(1, Math.min(lineCount, getLineCountWhole())); | |
| 8225 if (topIndex < 0) { | |
| 8226 topIndex = 0; | |
| 8227 } else if (topIndex > lineCount - pageSize) { | |
| 8228 topIndex = lineCount - pageSize; | |
| 8229 } | |
| 8230 pixel = getLinePixel(topIndex); | |
| 8231 } else { | |
| 8232 topIndex = Math.max(0, Math.min(lineCount - 1, topIndex)); | |
| 8233 pixel = getLinePixel(topIndex); | |
| 8234 if (pixel > 0) { | |
| 8235 pixel = getAvailableHeightBellow(pixel); | |
| 8236 } else { | |
| 8237 pixel = getAvailableHeightAbove(pixel); | |
| 8238 } | |
| 8239 } | |
| 8240 scrollVertical(pixel, true); | |
| 8241 } | |
| 8242 /** | |
| 8243 * Sets the top pixel offset. Do nothing if there is no text set. | |
| 8244 * <p> | |
| 8245 * The top pixel offset is the vertical pixel offset of the widget. The | |
| 8246 * widget is scrolled so that the given pixel position is at the top. | |
| 8247 * The top index is adjusted to the corresponding top line. | |
| 8248 * Note: The top pixel is reset to 0 when new text is set in the widget. | |
| 8249 * </p> | |
| 8250 * | |
| 8251 * @param pixel new top pixel offset. Must be between 0 and | |
| 8252 * (getLineCount() - visible lines per page) / getLineHeight()). An out | |
| 8253 * of range offset will be adjusted accordingly. | |
| 8254 * @exception DWTException <ul> | |
| 8255 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8256 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8257 * </ul> | |
| 8258 * @since 2.0 | |
| 8259 */ | |
| 8260 public void setTopPixel(int pixel) { | |
| 8261 checkWidget(); | |
| 8262 if (getCharCount() is 0) { | |
| 8263 return; | |
| 8264 } | |
| 8265 if (pixel < 0) pixel = 0; | |
| 8266 int lineCount = content.getLineCount(); | |
| 8267 int height = clientAreaHeight - topMargin - bottomMargin; | |
| 8268 int verticalOffset = getVerticalScrollOffset(); | |
| 8269 if (isFixedLineHeight()) { | |
| 8270 int maxTopPixel = Math.max(0, lineCount * getVerticalIncrement() - height); | |
| 8271 if (pixel > maxTopPixel) pixel = maxTopPixel; | |
| 8272 pixel -= verticalOffset; | |
| 8273 } else { | |
| 8274 pixel -= verticalOffset; | |
| 8275 if (pixel > 0) { | |
| 8276 pixel = getAvailableHeightBellow(pixel); | |
| 8277 } | |
| 8278 } | |
| 8279 scrollVertical(pixel, true); | |
| 8280 } | |
| 8281 /** | |
| 8282 * Sets whether the widget wraps lines. | |
| 8283 * <p> | |
| 8284 * This overrides the creation style bit DWT.WRAP. | |
| 8285 * </p> | |
| 8286 * | |
| 8287 * @param wrap true=widget wraps lines, false=widget does not wrap lines | |
| 8288 * @since 2.0 | |
| 8289 */ | |
| 8290 public void setWordWrap(bool wrap) { | |
| 8291 checkWidget(); | |
| 8292 if ((getStyle() & DWT.SINGLE) !is 0) return; | |
| 8293 if (wordWrap is wrap) return; | |
| 8294 wordWrap = wrap; | |
| 8295 setVariableLineHeight(); | |
| 8296 resetCache(0, content.getLineCount()); | |
| 8297 horizontalScrollOffset = 0; | |
| 8298 ScrollBar horizontalBar = getHorizontalBar(); | |
| 8299 if (horizontalBar !is null) { | |
| 8300 horizontalBar.setVisible(!wordWrap); | |
| 8301 } | |
| 8302 setScrollBars(true); | |
| 8303 setCaretLocation(); | |
| 8304 super.redraw(); | |
| 8305 } | |
| 8306 bool showLocation(Rectangle rect, bool scrollPage) { | |
| 8307 int clientAreaWidth = this.clientAreaWidth - leftMargin - rightMargin; | |
| 8308 int clientAreaHeight = this.clientAreaHeight - topMargin - bottomMargin; | |
| 8309 bool scrolled = false; | |
| 8310 if (rect.y <= topMargin) { | |
| 8311 scrolled = scrollVertical(rect.y - topMargin, true); | |
| 8312 } else if (rect.y + rect.height > clientAreaHeight) { | |
| 8313 if (clientAreaHeight is 0) { | |
| 8314 scrolled = scrollVertical(rect.y, true); | |
| 8315 } else { | |
| 8316 scrolled = scrollVertical(rect.y + rect.height - clientAreaHeight, true); | |
| 8317 } | |
| 8318 } | |
| 8319 if (clientAreaWidth > 0) { | |
| 8320 int minScroll = scrollPage ? clientAreaWidth / 4 : 0; | |
| 8321 if (rect.x < leftMargin) { | |
| 8322 int scrollWidth = Math.max(leftMargin - rect.x, minScroll); | |
| 8323 int maxScroll = horizontalScrollOffset; | |
| 8324 scrolled = scrollHorizontal(-Math.min(maxScroll, scrollWidth), true); | |
| 8325 } else if (rect.x + rect.width > clientAreaWidth) { | |
| 8326 int scrollWidth = Math.max(rect.x + rect.width - clientAreaWidth, minScroll); | |
| 8327 int maxScroll = renderer.getWidth() - horizontalScrollOffset - this.clientAreaWidth; | |
| 8328 scrolled = scrollHorizontal(Math.min(maxScroll, scrollWidth), true); | |
| 8329 } | |
| 8330 } | |
| 8331 return scrolled; | |
| 8332 } | |
| 8333 /** | |
| 8334 * Sets the caret location and scrolls the caret offset into view. | |
| 8335 */ | |
| 8336 void showCaret() { | |
| 8337 Rectangle bounds = getBoundsAtOffset(caretOffset); | |
| 8338 if (!showLocation(bounds, true)) { | |
| 8339 setCaretLocation(); | |
| 8340 } | |
| 8341 } | |
| 8342 /** | |
| 8343 * Scrolls the selection into view. | |
| 8344 * <p> | |
| 8345 * The end of the selection will be scrolled into view. | |
| 8346 * Note that if a right-to-left selection exists, the end of the selection is | |
| 8347 * the visual beginning of the selection (i.e., where the caret is located). | |
| 8348 * </p> | |
| 8349 * | |
| 8350 * @exception DWTException <ul> | |
| 8351 * <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> | |
| 8352 * <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> | |
| 8353 * </ul> | |
| 8354 */ | |
| 8355 public void showSelection() { | |
| 8356 checkWidget(); | |
| 8357 // is selection from right-to-left? | |
| 8358 bool rightToLeft = caretOffset is selection.x; | |
| 8359 int startOffset, endOffset; | |
| 8360 if (rightToLeft) { | |
| 8361 startOffset = selection.y; | |
| 8362 endOffset = selection.x; | |
| 8363 } else { | |
| 8364 startOffset = selection.x; | |
| 8365 endOffset = selection.y; | |
| 8366 } | |
| 8367 | |
| 8368 Rectangle startBounds = getBoundsAtOffset(startOffset); | |
| 8369 Rectangle endBounds = getBoundsAtOffset(endOffset); | |
| 8370 | |
| 8371 // can the selection be fully displayed within the widget's visible width? | |
| 8372 int w = clientAreaWidth - leftMargin - rightMargin; | |
| 8373 bool selectionFits = rightToLeft ? startBounds.x - endBounds.x <= w : endBounds.x - startBounds.x <= w; | |
| 8374 if (selectionFits) { | |
| 8375 // show as much of the selection as possible by first showing | |
| 8376 // the start of the selection | |
| 8377 if (showLocation(startBounds, false)) { | |
| 8378 // endX value could change if showing startX caused a scroll to occur | |
| 8379 endBounds = getBoundsAtOffset(endOffset); | |
| 8380 } | |
| 8381 // the character at endOffset is not part of the selection | |
| 8382 endBounds.width = 0; | |
| 8383 showLocation(endBounds, false); | |
| 8384 } else { | |
| 8385 // just show the end of the selection since the selection start | |
| 8386 // will not be visible | |
| 8387 showLocation(endBounds, true); | |
| 8388 } | |
| 8389 } | |
| 8390 /** | |
| 8391 * Updates the selection and caret position depending on the text change. | |
| 8392 * <p> | |
| 8393 * If the selection intersects with the replaced text, the selection is | |
| 8394 * reset and the caret moved to the end of the new text. | |
| 8395 * If the selection is behind the replaced text it is moved so that the | |
| 8396 * same text remains selected. If the selection is before the replaced text | |
| 8397 * it is left unchanged. | |
| 8398 * </p> | |
| 8399 * | |
| 8400 * @param startOffset offset of the text change | |
| 8401 * @param replacedLength length of text being replaced | |
| 8402 * @param newLength length of new text | |
| 8403 */ | |
| 8404 void updateSelection(int startOffset, int replacedLength, int newLength) { | |
| 8405 if (selection.y <= startOffset) { | |
| 8406 // selection ends before text change | |
| 8407 return; | |
| 8408 } | |
| 8409 if (selection.x < startOffset) { | |
| 8410 // clear selection fragment before text change | |
| 8411 internalRedrawRange(selection.x, startOffset - selection.x); | |
| 8412 } | |
| 8413 if (selection.y > startOffset + replacedLength && selection.x < startOffset + replacedLength) { | |
| 8414 // clear selection fragment after text change. | |
| 8415 // do this only when the selection is actually affected by the | |
| 8416 // change. Selection is only affected if it intersects the change (1GDY217). | |
| 8417 int netNewLength = newLength - replacedLength; | |
| 8418 int redrawStart = startOffset + newLength; | |
| 8419 internalRedrawRange(redrawStart, selection.y + netNewLength - redrawStart); | |
| 8420 } | |
| 8421 if (selection.y > startOffset && selection.x < startOffset + replacedLength) { | |
| 8422 // selection intersects replaced text. set caret behind text change | |
| 8423 setSelection(startOffset + newLength, 0, true); | |
| 8424 } else { | |
| 8425 // move selection to keep same text selected | |
| 8426 setSelection(selection.x + newLength - replacedLength, selection.y - selection.x, true); | |
| 8427 } | |
| 8428 setCaretLocation(); | |
| 8429 } | |
| 8430 } |