Mercurial > projects > dwt-addons
annotate dwtx/jface/text/WhitespaceCharacterPainter.d @ 147:000f9136b8f7
final
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 24 Aug 2008 22:35:05 +0200 |
| parents | 26688fec6d23 |
| children | 1a5b8f8129df |
| rev | line source |
|---|---|
| 129 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2006, 2007 Wind River Systems, Inc. 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 * Anton Leherbauer (Wind River Systems) - initial API and implementation - https://bugs.eclipse.org/bugs/show_bug.cgi?id=22712 | |
| 10 * Anton Leherbauer (Wind River Systems) - [painting] Long lines take too long to display when "Show Whitespace Characters" is enabled - https://bugs.eclipse.org/bugs/show_bug.cgi?id=196116 | |
| 11 * Anton Leherbauer (Wind River Systems) - [painting] Whitespace characters not drawn when scrolling to right slowly - https://bugs.eclipse.org/bugs/show_bug.cgi?id=206633 | |
| 12 * Port to the D programming language: | |
| 13 * Frank Benoit <benoit@tionex.de> | |
| 14 *******************************************************************************/ | |
| 15 module dwtx.jface.text.WhitespaceCharacterPainter; | |
| 16 | |
| 131 | 17 import dwtx.jface.text.IDocumentPartitioningListener; // packageimport |
| 18 import dwtx.jface.text.DefaultTextHover; // packageimport | |
| 19 import dwtx.jface.text.AbstractInformationControl; // packageimport | |
| 20 import dwtx.jface.text.TextUtilities; // packageimport | |
| 21 import dwtx.jface.text.IInformationControlCreatorExtension; // packageimport | |
| 22 import dwtx.jface.text.AbstractInformationControlManager; // packageimport | |
| 23 import dwtx.jface.text.ITextViewerExtension2; // packageimport | |
| 24 import dwtx.jface.text.IDocumentPartitioner; // packageimport | |
| 25 import dwtx.jface.text.DefaultIndentLineAutoEditStrategy; // packageimport | |
| 26 import dwtx.jface.text.ITextSelection; // packageimport | |
| 27 import dwtx.jface.text.Document; // packageimport | |
| 28 import dwtx.jface.text.FindReplaceDocumentAdapterContentProposalProvider; // packageimport | |
| 29 import dwtx.jface.text.ITextListener; // packageimport | |
| 30 import dwtx.jface.text.BadPartitioningException; // packageimport | |
| 31 import dwtx.jface.text.ITextViewerExtension5; // packageimport | |
| 32 import dwtx.jface.text.IDocumentPartitionerExtension3; // packageimport | |
| 33 import dwtx.jface.text.IUndoManager; // packageimport | |
| 34 import dwtx.jface.text.ITextHoverExtension2; // packageimport | |
| 35 import dwtx.jface.text.IRepairableDocument; // packageimport | |
| 36 import dwtx.jface.text.IRewriteTarget; // packageimport | |
| 37 import dwtx.jface.text.DefaultPositionUpdater; // packageimport | |
| 38 import dwtx.jface.text.RewriteSessionEditProcessor; // packageimport | |
| 39 import dwtx.jface.text.TextViewerHoverManager; // packageimport | |
| 40 import dwtx.jface.text.DocumentRewriteSession; // packageimport | |
| 41 import dwtx.jface.text.TextViewer; // packageimport | |
| 42 import dwtx.jface.text.ITextViewerExtension8; // packageimport | |
| 43 import dwtx.jface.text.RegExMessages; // packageimport | |
| 44 import dwtx.jface.text.IDelayedInputChangeProvider; // packageimport | |
| 45 import dwtx.jface.text.ITextOperationTargetExtension; // packageimport | |
| 46 import dwtx.jface.text.IWidgetTokenOwner; // packageimport | |
| 47 import dwtx.jface.text.IViewportListener; // packageimport | |
| 48 import dwtx.jface.text.GapTextStore; // packageimport | |
| 49 import dwtx.jface.text.MarkSelection; // packageimport | |
| 50 import dwtx.jface.text.IDocumentPartitioningListenerExtension; // packageimport | |
| 51 import dwtx.jface.text.IDocumentAdapterExtension; // packageimport | |
| 52 import dwtx.jface.text.IInformationControlExtension; // packageimport | |
| 53 import dwtx.jface.text.IDocumentPartitioningListenerExtension2; // packageimport | |
| 54 import dwtx.jface.text.DefaultDocumentAdapter; // packageimport | |
| 55 import dwtx.jface.text.ITextViewerExtension3; // packageimport | |
| 56 import dwtx.jface.text.IInformationControlCreator; // packageimport | |
| 57 import dwtx.jface.text.TypedRegion; // packageimport | |
| 58 import dwtx.jface.text.ISynchronizable; // packageimport | |
| 59 import dwtx.jface.text.IMarkRegionTarget; // packageimport | |
| 60 import dwtx.jface.text.TextViewerUndoManager; // packageimport | |
| 61 import dwtx.jface.text.IRegion; // packageimport | |
| 62 import dwtx.jface.text.IInformationControlExtension2; // packageimport | |
| 63 import dwtx.jface.text.IDocumentExtension4; // packageimport | |
| 64 import dwtx.jface.text.IDocumentExtension2; // packageimport | |
| 65 import dwtx.jface.text.IDocumentPartitionerExtension2; // packageimport | |
| 66 import dwtx.jface.text.Assert; // packageimport | |
| 67 import dwtx.jface.text.DefaultInformationControl; // packageimport | |
| 68 import dwtx.jface.text.IWidgetTokenOwnerExtension; // packageimport | |
| 69 import dwtx.jface.text.DocumentClone; // packageimport | |
| 70 import dwtx.jface.text.DefaultUndoManager; // packageimport | |
| 71 import dwtx.jface.text.IFindReplaceTarget; // packageimport | |
| 72 import dwtx.jface.text.IAutoEditStrategy; // packageimport | |
| 73 import dwtx.jface.text.ILineTrackerExtension; // packageimport | |
| 74 import dwtx.jface.text.IUndoManagerExtension; // packageimport | |
| 75 import dwtx.jface.text.TextSelection; // packageimport | |
| 76 import dwtx.jface.text.DefaultAutoIndentStrategy; // packageimport | |
| 77 import dwtx.jface.text.IAutoIndentStrategy; // packageimport | |
| 78 import dwtx.jface.text.IPainter; // packageimport | |
| 79 import dwtx.jface.text.IInformationControl; // packageimport | |
| 80 import dwtx.jface.text.IInformationControlExtension3; // packageimport | |
| 81 import dwtx.jface.text.ITextViewerExtension6; // packageimport | |
| 82 import dwtx.jface.text.IInformationControlExtension4; // packageimport | |
| 83 import dwtx.jface.text.DefaultLineTracker; // packageimport | |
| 84 import dwtx.jface.text.IDocumentInformationMappingExtension; // packageimport | |
| 85 import dwtx.jface.text.IRepairableDocumentExtension; // packageimport | |
| 86 import dwtx.jface.text.ITextHover; // packageimport | |
| 87 import dwtx.jface.text.FindReplaceDocumentAdapter; // packageimport | |
| 88 import dwtx.jface.text.ILineTracker; // packageimport | |
| 89 import dwtx.jface.text.Line; // packageimport | |
| 90 import dwtx.jface.text.ITextViewerExtension; // packageimport | |
| 91 import dwtx.jface.text.IDocumentAdapter; // packageimport | |
| 92 import dwtx.jface.text.TextEvent; // packageimport | |
| 93 import dwtx.jface.text.BadLocationException; // packageimport | |
| 94 import dwtx.jface.text.AbstractDocument; // packageimport | |
| 95 import dwtx.jface.text.AbstractLineTracker; // packageimport | |
| 96 import dwtx.jface.text.TreeLineTracker; // packageimport | |
| 97 import dwtx.jface.text.ITextPresentationListener; // packageimport | |
| 98 import dwtx.jface.text.Region; // packageimport | |
| 99 import dwtx.jface.text.ITextViewer; // packageimport | |
| 100 import dwtx.jface.text.IDocumentInformationMapping; // packageimport | |
| 101 import dwtx.jface.text.MarginPainter; // packageimport | |
| 102 import dwtx.jface.text.IPaintPositionManager; // packageimport | |
| 103 import dwtx.jface.text.TextPresentation; // packageimport | |
| 104 import dwtx.jface.text.IFindReplaceTargetExtension; // packageimport | |
| 105 import dwtx.jface.text.ISlaveDocumentManagerExtension; // packageimport | |
| 106 import dwtx.jface.text.ISelectionValidator; // packageimport | |
| 107 import dwtx.jface.text.IDocumentExtension; // packageimport | |
| 108 import dwtx.jface.text.PropagatingFontFieldEditor; // packageimport | |
| 109 import dwtx.jface.text.ConfigurableLineTracker; // packageimport | |
| 110 import dwtx.jface.text.SlaveDocumentEvent; // packageimport | |
| 111 import dwtx.jface.text.IDocumentListener; // packageimport | |
| 112 import dwtx.jface.text.PaintManager; // packageimport | |
| 113 import dwtx.jface.text.IFindReplaceTargetExtension3; // packageimport | |
| 114 import dwtx.jface.text.ITextDoubleClickStrategy; // packageimport | |
| 115 import dwtx.jface.text.IDocumentExtension3; // packageimport | |
| 116 import dwtx.jface.text.Position; // packageimport | |
| 117 import dwtx.jface.text.TextMessages; // packageimport | |
| 118 import dwtx.jface.text.CopyOnWriteTextStore; // packageimport | |
| 119 import dwtx.jface.text.IPositionUpdater; // packageimport | |
| 120 import dwtx.jface.text.DefaultTextDoubleClickStrategy; // packageimport | |
| 121 import dwtx.jface.text.ListLineTracker; // packageimport | |
| 122 import dwtx.jface.text.ITextInputListener; // packageimport | |
| 123 import dwtx.jface.text.BadPositionCategoryException; // packageimport | |
| 124 import dwtx.jface.text.IWidgetTokenKeeperExtension; // packageimport | |
| 125 import dwtx.jface.text.IInputChangedListener; // packageimport | |
| 126 import dwtx.jface.text.ITextOperationTarget; // packageimport | |
| 127 import dwtx.jface.text.IDocumentInformationMappingExtension2; // packageimport | |
| 128 import dwtx.jface.text.ITextViewerExtension7; // packageimport | |
| 129 import dwtx.jface.text.IInformationControlExtension5; // packageimport | |
| 130 import dwtx.jface.text.IDocumentRewriteSessionListener; // packageimport | |
| 131 import dwtx.jface.text.JFaceTextUtil; // packageimport | |
| 132 import dwtx.jface.text.AbstractReusableInformationControlCreator; // packageimport | |
| 133 import dwtx.jface.text.TabsToSpacesConverter; // packageimport | |
| 134 import dwtx.jface.text.CursorLinePainter; // packageimport | |
| 135 import dwtx.jface.text.ITextHoverExtension; // packageimport | |
| 136 import dwtx.jface.text.IEventConsumer; // packageimport | |
| 137 import dwtx.jface.text.IDocument; // packageimport | |
| 138 import dwtx.jface.text.IWidgetTokenKeeper; // packageimport | |
| 139 import dwtx.jface.text.DocumentCommand; // packageimport | |
| 140 import dwtx.jface.text.TypedPosition; // packageimport | |
| 141 import dwtx.jface.text.IEditingSupportRegistry; // packageimport | |
| 142 import dwtx.jface.text.IDocumentPartitionerExtension; // packageimport | |
| 143 import dwtx.jface.text.AbstractHoverInformationControlManager; // packageimport | |
| 144 import dwtx.jface.text.IEditingSupport; // packageimport | |
| 145 import dwtx.jface.text.IMarkSelection; // packageimport | |
| 146 import dwtx.jface.text.ISlaveDocumentManager; // packageimport | |
| 147 import dwtx.jface.text.DocumentEvent; // packageimport | |
| 148 import dwtx.jface.text.DocumentPartitioningChangedEvent; // packageimport | |
| 149 import dwtx.jface.text.ITextStore; // packageimport | |
| 150 import dwtx.jface.text.JFaceTextMessages; // packageimport | |
| 151 import dwtx.jface.text.DocumentRewriteSessionEvent; // packageimport | |
| 152 import dwtx.jface.text.SequentialRewriteTextStore; // packageimport | |
| 153 import dwtx.jface.text.DocumentRewriteSessionType; // packageimport | |
| 154 import dwtx.jface.text.TextAttribute; // packageimport | |
| 155 import dwtx.jface.text.ITextViewerExtension4; // packageimport | |
| 156 import dwtx.jface.text.ITypedRegion; // packageimport | |
| 157 | |
| 158 | |
| 129 | 159 import dwt.dwthelper.utils; |
| 160 | |
| 161 import dwt.custom.StyleRange; | |
| 162 import dwt.custom.StyledText; | |
| 163 import dwt.custom.StyledTextContent; | |
| 164 import dwt.events.PaintEvent; | |
| 165 import dwt.events.PaintListener; | |
| 166 import dwt.graphics.Color; | |
| 167 import dwt.graphics.FontMetrics; | |
| 168 import dwt.graphics.GC; | |
| 169 import dwt.graphics.Point; | |
| 170 | |
| 171 | |
| 172 /** | |
| 173 * A painter for drawing visible characters for (invisible) whitespace | |
| 174 * characters. | |
| 175 * | |
| 176 * @since 3.3 | |
| 177 */ | |
| 178 public class WhitespaceCharacterPainter : IPainter, PaintListener { | |
| 179 | |
| 147 | 180 private static const char SPACE_SIGN= '\u00b7'; |
| 181 private static const char IDEOGRAPHIC_SPACE_SIGN= '\u00b0'; | |
| 182 private static const char TAB_SIGN= '\u00bb'; | |
| 183 private static const char CARRIAGE_RETURN_SIGN= '\u00a4'; | |
| 184 private static const char LINE_FEED_SIGN= '\u00b6'; | |
| 129 | 185 |
| 186 /** Indicates whether this painter is active. */ | |
| 187 private bool fIsActive= false; | |
| 188 /** The source viewer this painter is attached to. */ | |
| 189 private ITextViewer fTextViewer; | |
| 190 /** The viewer's widget. */ | |
| 191 private StyledText fTextWidget; | |
| 192 /** Tells whether the advanced graphics sub system is available. */ | |
| 193 private bool fIsAdvancedGraphicsPresent; | |
| 194 | |
| 195 /** | |
| 196 * Creates a new painter for the given text viewer. | |
| 197 * | |
| 198 * @param textViewer the text viewer the painter should be attached to | |
| 199 */ | |
|
133
7d818bd32d63
Fix ctors to this with gvim regexp
Frank Benoit <benoit@tionex.de>
parents:
131
diff
changeset
|
200 public this(ITextViewer textViewer) { |
| 129 | 201 super(); |
| 202 fTextViewer= textViewer; | |
| 203 fTextWidget= textViewer.getTextWidget(); | |
| 204 GC gc= new GC(fTextWidget); | |
| 205 gc.setAdvanced(true); | |
| 206 fIsAdvancedGraphicsPresent= gc.getAdvanced(); | |
| 207 gc.dispose(); | |
| 208 } | |
| 209 | |
| 210 /* | |
| 211 * @see dwtx.jface.text.IPainter#dispose() | |
| 212 */ | |
| 213 public void dispose() { | |
| 214 fTextViewer= null; | |
| 215 fTextWidget= null; | |
| 216 } | |
| 217 | |
| 218 /* | |
| 219 * @see dwtx.jface.text.IPainter#paint(int) | |
| 220 */ | |
| 221 public void paint(int reason) { | |
| 222 IDocument document= fTextViewer.getDocument(); | |
| 223 if (document is null) { | |
| 224 deactivate(false); | |
| 225 return; | |
| 226 } | |
| 227 if (!fIsActive) { | |
| 228 fIsActive= true; | |
| 229 fTextWidget.addPaintListener(this); | |
| 230 redrawAll(); | |
| 231 } else if (reason is CONFIGURATION || reason is INTERNAL) { | |
| 232 redrawAll(); | |
| 233 } else if (reason is TEXT_CHANGE) { | |
| 234 // redraw current line only | |
| 235 try { | |
| 236 IRegion lineRegion = | |
| 237 document.getLineInformationOfOffset(getDocumentOffset(fTextWidget.getCaretOffset())); | |
| 238 int widgetOffset= getWidgetOffset(lineRegion.getOffset()); | |
| 239 int charCount= fTextWidget.getCharCount(); | |
| 240 int redrawLength= Math.min(lineRegion.getLength(), charCount - widgetOffset); | |
| 241 if (widgetOffset >= 0 && redrawLength > 0) { | |
| 242 fTextWidget.redrawRange(widgetOffset, redrawLength, true); | |
| 243 } | |
| 244 } catch (BadLocationException e) { | |
| 245 // ignore | |
| 246 } | |
| 247 } | |
| 248 } | |
| 249 | |
| 250 /* | |
| 251 * @see dwtx.jface.text.IPainter#deactivate(bool) | |
| 252 */ | |
| 253 public void deactivate(bool redraw) { | |
| 254 if (fIsActive) { | |
| 255 fIsActive= false; | |
| 256 fTextWidget.removePaintListener(this); | |
| 257 if (redraw) { | |
| 258 redrawAll(); | |
| 259 } | |
| 260 } | |
| 261 } | |
| 262 | |
| 263 /* | |
| 264 * @see dwtx.jface.text.IPainter#setPositionManager(dwtx.jface.text.IPaintPositionManager) | |
| 265 */ | |
| 266 public void setPositionManager(IPaintPositionManager manager) { | |
| 267 // no need for a position manager | |
| 268 } | |
| 269 | |
| 270 /* | |
| 271 * @see dwt.events.PaintListener#paintControl(dwt.events.PaintEvent) | |
| 272 */ | |
| 273 public void paintControl(PaintEvent event) { | |
| 274 if (fTextWidget !is null) { | |
| 275 handleDrawRequest(event.gc, event.x, event.y, event.width, event.height); | |
| 276 } | |
| 277 } | |
| 278 | |
| 279 /** | |
| 280 * Draw characters in view range. | |
| 281 * | |
| 282 * @param gc | |
| 283 * @param x | |
| 284 * @param y | |
| 285 * @param w | |
| 286 * @param h | |
| 287 */ | |
| 288 private void handleDrawRequest(GC gc, int x, int y, int w, int h) { | |
| 289 int startLine= fTextWidget.getLineIndex(y); | |
| 290 int endLine= fTextWidget.getLineIndex(y + h - 1); | |
| 291 if (startLine <= endLine && startLine < fTextWidget.getLineCount()) { | |
| 292 if (fIsAdvancedGraphicsPresent) { | |
| 293 int alpha= gc.getAlpha(); | |
| 294 gc.setAlpha(100); | |
| 295 drawLineRange(gc, startLine, endLine, x, w); | |
| 296 gc.setAlpha(alpha); | |
| 297 } else | |
| 298 drawLineRange(gc, startLine, endLine, x, w); | |
| 299 } | |
| 300 } | |
| 301 | |
| 302 /** | |
| 303 * Draw the given line range. | |
| 304 * | |
| 305 * @param gc | |
| 306 * @param startLine first line number | |
| 307 * @param endLine last line number (inclusive) | |
| 308 * @param x the X-coordinate of the drawing range | |
| 309 * @param w the width of the drawing range | |
| 310 */ | |
| 311 private void drawLineRange(GC gc, int startLine, int endLine, int x, int w) { | |
| 312 final int viewPortWidth= fTextWidget.getClientArea().width; | |
| 313 for (int line= startLine; line <= endLine; line++) { | |
| 314 int lineOffset= fTextWidget.getOffsetAtLine(line); | |
| 315 // line end offset including line delimiter | |
| 316 int lineEndOffset; | |
| 317 if (line < fTextWidget.getLineCount() - 1) { | |
| 318 lineEndOffset= fTextWidget.getOffsetAtLine(line + 1); | |
| 319 } else { | |
| 320 lineEndOffset= fTextWidget.getCharCount(); | |
| 321 } | |
| 322 // line length excluding line delimiter | |
| 323 int lineLength= lineEndOffset - lineOffset; | |
| 324 while (lineLength > 0) { | |
| 325 char c= fTextWidget.getTextRange(lineOffset + lineLength - 1, 1).charAt(0); | |
| 326 if (c !is '\r' && c !is '\n') { | |
| 327 break; | |
| 328 } | |
| 329 --lineLength; | |
| 330 } | |
| 331 // compute coordinates of last character on line | |
| 332 Point endOfLine= fTextWidget.getLocationAtOffset(lineOffset + lineLength); | |
| 333 if (x - endOfLine.x > viewPortWidth) { | |
| 334 // line is not visible | |
| 335 continue; | |
| 336 } | |
| 337 // Y-coordinate of line | |
| 338 int y= fTextWidget.getLinePixel(line); | |
| 339 // compute first visible char offset | |
| 340 int startOffset; | |
| 341 try { | |
| 342 startOffset= fTextWidget.getOffsetAtLocation(new Point(x, y)) - 1; | |
| 343 if (startOffset - 2 <= lineOffset) { | |
| 344 startOffset= lineOffset; | |
| 345 } | |
| 346 } catch (IllegalArgumentException iae) { | |
| 347 startOffset= lineOffset; | |
| 348 } | |
| 349 // compute last visible char offset | |
| 350 int endOffset; | |
| 351 if (x + w >= endOfLine.x) { | |
| 352 // line end is visible | |
| 353 endOffset= lineEndOffset; | |
| 354 } else { | |
| 355 try { | |
| 356 endOffset= fTextWidget.getOffsetAtLocation(new Point(x + w - 1, y)) + 1; | |
| 357 if (endOffset + 2 >= lineEndOffset) { | |
| 358 endOffset= lineEndOffset; | |
| 359 } | |
| 360 } catch (IllegalArgumentException iae) { | |
| 361 endOffset= lineEndOffset; | |
| 362 } | |
| 363 } | |
| 364 // draw character range | |
| 365 if (endOffset > startOffset) { | |
| 366 drawCharRange(gc, startOffset, endOffset); | |
| 367 } | |
| 368 } | |
| 369 } | |
| 370 | |
| 371 /** | |
| 372 * Draw characters of content range. | |
| 373 * | |
| 374 * @param gc the GC | |
| 375 * @param startOffset inclusive start index | |
| 376 * @param endOffset exclusive end index | |
| 377 */ | |
| 378 private void drawCharRange(GC gc, int startOffset, int endOffset) { | |
| 379 StyledTextContent content= fTextWidget.getContent(); | |
| 380 int length= endOffset - startOffset; | |
| 381 String text= content.getTextRange(startOffset, length); | |
| 382 StyleRange styleRange= null; | |
| 383 Color fg= null; | |
| 384 Point selection= fTextWidget.getSelection(); | |
| 385 StringBuffer visibleChar= new StringBuffer(10); | |
| 386 for (int textOffset= 0; textOffset <= length; ++textOffset) { | |
| 387 int delta= 0; | |
| 388 bool eol= false; | |
| 389 if (textOffset < length) { | |
| 390 delta= 1; | |
| 391 char c= text.charAt(textOffset); | |
| 392 switch (c) { | |
| 393 case ' ' : | |
| 394 visibleChar.append(SPACE_SIGN); | |
| 395 // 'continue' would improve performance but may produce drawing errors | |
| 396 // for long runs of space if width of space and dot differ | |
| 397 break; | |
| 398 case '\u3000' : // ideographic whitespace | |
| 399 visibleChar.append(IDEOGRAPHIC_SPACE_SIGN); | |
| 400 // 'continue' would improve performance but may produce drawing errors | |
| 401 // for long runs of space if width of space and dot differ | |
| 402 break; | |
| 403 case '\t' : | |
| 404 visibleChar.append(TAB_SIGN); | |
| 405 break; | |
| 406 case '\r' : | |
| 407 visibleChar.append(CARRIAGE_RETURN_SIGN); | |
| 408 if (textOffset >= length - 1 || text.charAt(textOffset + 1) !is '\n') { | |
| 409 eol= true; | |
| 410 break; | |
| 411 } | |
| 412 continue; | |
| 413 case '\n' : | |
| 414 visibleChar.append(LINE_FEED_SIGN); | |
| 415 eol= true; | |
| 416 break; | |
| 417 default : | |
| 418 delta= 0; | |
| 419 break; | |
| 420 } | |
| 421 } | |
| 422 if (visibleChar.length() > 0) { | |
| 423 int widgetOffset= startOffset + textOffset - visibleChar.length() + delta; | |
| 424 if (!eol || !isFoldedLine(content.getLineAtOffset(widgetOffset))) { | |
| 425 if (widgetOffset >= selection.x && widgetOffset < selection.y) { | |
| 426 fg= fTextWidget.getSelectionForeground(); | |
| 427 } else if (styleRange is null || styleRange.start + styleRange.length <= widgetOffset) { | |
| 428 styleRange= fTextWidget.getStyleRangeAtOffset(widgetOffset); | |
| 429 if (styleRange is null || styleRange.foreground is null) { | |
| 430 fg= fTextWidget.getForeground(); | |
| 431 } else { | |
| 432 fg= styleRange.foreground; | |
| 433 } | |
| 434 } | |
| 435 draw(gc, widgetOffset, visibleChar.toString(), fg); | |
| 436 } | |
|
140
26688fec6d23
Following dsss compile errors
Frank Benoit <benoit@tionex.de>
parents:
138
diff
changeset
|
437 visibleChar.delete_(0, visibleChar.length()); |
| 129 | 438 } |
| 439 } | |
| 440 } | |
| 441 | |
| 442 /** | |
| 443 * Check if the given widget line is a folded line. | |
| 444 * | |
| 445 * @param widgetLine the widget line number | |
| 446 * @return <code>true</code> if the line is folded | |
| 447 */ | |
| 448 private bool isFoldedLine(int widgetLine) { | |
| 138 | 449 if ( cast(ITextViewerExtension5)fTextViewer ) { |
| 134 | 450 ITextViewerExtension5 extension= cast(ITextViewerExtension5)fTextViewer; |
| 129 | 451 int modelLine= extension.widgetLine2ModelLine(widgetLine); |
| 452 int widgetLine2= extension.modelLine2WidgetLine(modelLine + 1); | |
| 453 return widgetLine2 is -1; | |
| 454 } | |
| 455 return false; | |
| 456 } | |
| 457 | |
| 458 /** | |
| 459 * Redraw all of the text widgets visible content. | |
| 460 */ | |
| 461 private void redrawAll() { | |
| 462 fTextWidget.redraw(); | |
| 463 } | |
| 464 | |
| 465 /** | |
| 466 * Draw string at widget offset. | |
| 467 * | |
| 468 * @param gc | |
| 469 * @param offset the widget offset | |
| 470 * @param s the string to be drawn | |
| 471 * @param fg the foreground color | |
| 472 */ | |
| 473 private void draw(GC gc, int offset, String s, Color fg) { | |
| 474 // Compute baseline delta (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=165640) | |
| 475 int baseline= fTextWidget.getBaseline(offset); | |
| 476 FontMetrics fontMetrics= gc.getFontMetrics(); | |
| 477 int fontBaseline= fontMetrics.getAscent() + fontMetrics.getLeading(); | |
| 478 int baslineDelta= baseline - fontBaseline; | |
| 479 | |
| 480 Point pos= fTextWidget.getLocationAtOffset(offset); | |
| 481 gc.setForeground(fg); | |
| 482 gc.drawString(s, pos.x, pos.y + baslineDelta, true); | |
| 483 } | |
| 484 | |
| 485 /** | |
| 486 * Convert a document offset to the corresponding widget offset. | |
| 487 * | |
| 488 * @param documentOffset | |
| 489 * @return widget offset | |
| 490 */ | |
| 491 private int getWidgetOffset(int documentOffset) { | |
| 138 | 492 if ( cast(ITextViewerExtension5)fTextViewer ) { |
| 134 | 493 ITextViewerExtension5 extension= cast(ITextViewerExtension5)fTextViewer; |
| 129 | 494 return extension.modelOffset2WidgetOffset(documentOffset); |
| 495 } | |
| 496 IRegion visible= fTextViewer.getVisibleRegion(); | |
| 497 int widgetOffset= documentOffset - visible.getOffset(); | |
| 498 if (widgetOffset > visible.getLength()) { | |
| 499 return -1; | |
| 500 } | |
| 501 return widgetOffset; | |
| 502 } | |
| 503 | |
| 504 /** | |
| 505 * Convert a widget offset to the corresponding document offset. | |
| 506 * | |
| 507 * @param widgetOffset | |
| 508 * @return document offset | |
| 509 */ | |
| 510 private int getDocumentOffset(int widgetOffset) { | |
| 138 | 511 if ( cast(ITextViewerExtension5)fTextViewer ) { |
| 134 | 512 ITextViewerExtension5 extension= cast(ITextViewerExtension5)fTextViewer; |
| 129 | 513 return extension.widgetOffset2ModelOffset(widgetOffset); |
| 514 } | |
| 515 IRegion visible= fTextViewer.getVisibleRegion(); | |
| 516 if (widgetOffset > visible.getLength()) { | |
| 517 return -1; | |
| 518 } | |
| 519 return widgetOffset + visible.getOffset(); | |
| 520 } | |
| 521 | |
| 522 } |