Mercurial > projects > dwt-addons
annotate dwtx/jface/text/CursorLinePainter.d @ 138:b6bad70d540a
Regex instanceof changes
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sun, 24 Aug 2008 02:26:23 +0200 |
| parents | 51e6e63f930e |
| children | 75302ef3f92f |
| rev | line source |
|---|---|
| 129 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2008 IBM Corporation and others. | |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 * Port to the D programming language: | |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 12 *******************************************************************************/ | |
| 13 | |
| 131 | 14 |
| 15 import dwtx.jface.text.IDocumentPartitioningListener; // packageimport | |
| 16 import dwtx.jface.text.DefaultTextHover; // packageimport | |
| 17 import dwtx.jface.text.AbstractInformationControl; // packageimport | |
| 18 import dwtx.jface.text.TextUtilities; // packageimport | |
| 19 import dwtx.jface.text.IInformationControlCreatorExtension; // packageimport | |
| 20 import dwtx.jface.text.AbstractInformationControlManager; // packageimport | |
| 21 import dwtx.jface.text.ITextViewerExtension2; // packageimport | |
| 22 import dwtx.jface.text.IDocumentPartitioner; // packageimport | |
| 23 import dwtx.jface.text.DefaultIndentLineAutoEditStrategy; // packageimport | |
| 24 import dwtx.jface.text.ITextSelection; // packageimport | |
| 25 import dwtx.jface.text.Document; // packageimport | |
| 26 import dwtx.jface.text.FindReplaceDocumentAdapterContentProposalProvider; // packageimport | |
| 27 import dwtx.jface.text.ITextListener; // packageimport | |
| 28 import dwtx.jface.text.BadPartitioningException; // packageimport | |
| 29 import dwtx.jface.text.ITextViewerExtension5; // packageimport | |
| 30 import dwtx.jface.text.IDocumentPartitionerExtension3; // packageimport | |
| 31 import dwtx.jface.text.IUndoManager; // packageimport | |
| 32 import dwtx.jface.text.ITextHoverExtension2; // packageimport | |
| 33 import dwtx.jface.text.IRepairableDocument; // packageimport | |
| 34 import dwtx.jface.text.IRewriteTarget; // packageimport | |
| 35 import dwtx.jface.text.DefaultPositionUpdater; // packageimport | |
| 36 import dwtx.jface.text.RewriteSessionEditProcessor; // packageimport | |
| 37 import dwtx.jface.text.TextViewerHoverManager; // packageimport | |
| 38 import dwtx.jface.text.DocumentRewriteSession; // packageimport | |
| 39 import dwtx.jface.text.TextViewer; // packageimport | |
| 40 import dwtx.jface.text.ITextViewerExtension8; // packageimport | |
| 41 import dwtx.jface.text.RegExMessages; // packageimport | |
| 42 import dwtx.jface.text.IDelayedInputChangeProvider; // packageimport | |
| 43 import dwtx.jface.text.ITextOperationTargetExtension; // packageimport | |
| 44 import dwtx.jface.text.IWidgetTokenOwner; // packageimport | |
| 45 import dwtx.jface.text.IViewportListener; // packageimport | |
| 46 import dwtx.jface.text.GapTextStore; // packageimport | |
| 47 import dwtx.jface.text.MarkSelection; // packageimport | |
| 48 import dwtx.jface.text.IDocumentPartitioningListenerExtension; // packageimport | |
| 49 import dwtx.jface.text.IDocumentAdapterExtension; // packageimport | |
| 50 import dwtx.jface.text.IInformationControlExtension; // packageimport | |
| 51 import dwtx.jface.text.IDocumentPartitioningListenerExtension2; // packageimport | |
| 52 import dwtx.jface.text.DefaultDocumentAdapter; // packageimport | |
| 53 import dwtx.jface.text.ITextViewerExtension3; // packageimport | |
| 54 import dwtx.jface.text.IInformationControlCreator; // packageimport | |
| 55 import dwtx.jface.text.TypedRegion; // packageimport | |
| 56 import dwtx.jface.text.ISynchronizable; // packageimport | |
| 57 import dwtx.jface.text.IMarkRegionTarget; // packageimport | |
| 58 import dwtx.jface.text.TextViewerUndoManager; // packageimport | |
| 59 import dwtx.jface.text.IRegion; // packageimport | |
| 60 import dwtx.jface.text.IInformationControlExtension2; // packageimport | |
| 61 import dwtx.jface.text.IDocumentExtension4; // packageimport | |
| 62 import dwtx.jface.text.IDocumentExtension2; // packageimport | |
| 63 import dwtx.jface.text.IDocumentPartitionerExtension2; // packageimport | |
| 64 import dwtx.jface.text.Assert; // packageimport | |
| 65 import dwtx.jface.text.DefaultInformationControl; // packageimport | |
| 66 import dwtx.jface.text.IWidgetTokenOwnerExtension; // packageimport | |
| 67 import dwtx.jface.text.DocumentClone; // packageimport | |
| 68 import dwtx.jface.text.DefaultUndoManager; // packageimport | |
| 69 import dwtx.jface.text.IFindReplaceTarget; // packageimport | |
| 70 import dwtx.jface.text.IAutoEditStrategy; // packageimport | |
| 71 import dwtx.jface.text.ILineTrackerExtension; // packageimport | |
| 72 import dwtx.jface.text.IUndoManagerExtension; // packageimport | |
| 73 import dwtx.jface.text.TextSelection; // packageimport | |
| 74 import dwtx.jface.text.DefaultAutoIndentStrategy; // packageimport | |
| 75 import dwtx.jface.text.IAutoIndentStrategy; // packageimport | |
| 76 import dwtx.jface.text.IPainter; // packageimport | |
| 77 import dwtx.jface.text.IInformationControl; // packageimport | |
| 78 import dwtx.jface.text.IInformationControlExtension3; // packageimport | |
| 79 import dwtx.jface.text.ITextViewerExtension6; // packageimport | |
| 80 import dwtx.jface.text.IInformationControlExtension4; // packageimport | |
| 81 import dwtx.jface.text.DefaultLineTracker; // packageimport | |
| 82 import dwtx.jface.text.IDocumentInformationMappingExtension; // packageimport | |
| 83 import dwtx.jface.text.IRepairableDocumentExtension; // packageimport | |
| 84 import dwtx.jface.text.ITextHover; // packageimport | |
| 85 import dwtx.jface.text.FindReplaceDocumentAdapter; // packageimport | |
| 86 import dwtx.jface.text.ILineTracker; // packageimport | |
| 87 import dwtx.jface.text.Line; // packageimport | |
| 88 import dwtx.jface.text.ITextViewerExtension; // packageimport | |
| 89 import dwtx.jface.text.IDocumentAdapter; // packageimport | |
| 90 import dwtx.jface.text.TextEvent; // packageimport | |
| 91 import dwtx.jface.text.BadLocationException; // packageimport | |
| 92 import dwtx.jface.text.AbstractDocument; // packageimport | |
| 93 import dwtx.jface.text.AbstractLineTracker; // packageimport | |
| 94 import dwtx.jface.text.TreeLineTracker; // packageimport | |
| 95 import dwtx.jface.text.ITextPresentationListener; // packageimport | |
| 96 import dwtx.jface.text.Region; // packageimport | |
| 97 import dwtx.jface.text.ITextViewer; // packageimport | |
| 98 import dwtx.jface.text.IDocumentInformationMapping; // packageimport | |
| 99 import dwtx.jface.text.MarginPainter; // packageimport | |
| 100 import dwtx.jface.text.IPaintPositionManager; // packageimport | |
| 101 import dwtx.jface.text.TextPresentation; // packageimport | |
| 102 import dwtx.jface.text.IFindReplaceTargetExtension; // packageimport | |
| 103 import dwtx.jface.text.ISlaveDocumentManagerExtension; // packageimport | |
| 104 import dwtx.jface.text.ISelectionValidator; // packageimport | |
| 105 import dwtx.jface.text.IDocumentExtension; // packageimport | |
| 106 import dwtx.jface.text.PropagatingFontFieldEditor; // packageimport | |
| 107 import dwtx.jface.text.ConfigurableLineTracker; // packageimport | |
| 108 import dwtx.jface.text.SlaveDocumentEvent; // packageimport | |
| 109 import dwtx.jface.text.IDocumentListener; // packageimport | |
| 110 import dwtx.jface.text.PaintManager; // packageimport | |
| 111 import dwtx.jface.text.IFindReplaceTargetExtension3; // packageimport | |
| 112 import dwtx.jface.text.ITextDoubleClickStrategy; // packageimport | |
| 113 import dwtx.jface.text.IDocumentExtension3; // packageimport | |
| 114 import dwtx.jface.text.Position; // packageimport | |
| 115 import dwtx.jface.text.TextMessages; // packageimport | |
| 116 import dwtx.jface.text.CopyOnWriteTextStore; // packageimport | |
| 117 import dwtx.jface.text.WhitespaceCharacterPainter; // packageimport | |
| 118 import dwtx.jface.text.IPositionUpdater; // packageimport | |
| 119 import dwtx.jface.text.DefaultTextDoubleClickStrategy; // packageimport | |
| 120 import dwtx.jface.text.ListLineTracker; // packageimport | |
| 121 import dwtx.jface.text.ITextInputListener; // packageimport | |
| 122 import dwtx.jface.text.BadPositionCategoryException; // packageimport | |
| 123 import dwtx.jface.text.IWidgetTokenKeeperExtension; // packageimport | |
| 124 import dwtx.jface.text.IInputChangedListener; // packageimport | |
| 125 import dwtx.jface.text.ITextOperationTarget; // packageimport | |
| 126 import dwtx.jface.text.IDocumentInformationMappingExtension2; // packageimport | |
| 127 import dwtx.jface.text.ITextViewerExtension7; // packageimport | |
| 128 import dwtx.jface.text.IInformationControlExtension5; // packageimport | |
| 129 import dwtx.jface.text.IDocumentRewriteSessionListener; // packageimport | |
| 130 import dwtx.jface.text.JFaceTextUtil; // packageimport | |
| 131 import dwtx.jface.text.AbstractReusableInformationControlCreator; // packageimport | |
| 132 import dwtx.jface.text.TabsToSpacesConverter; // packageimport | |
| 133 import dwtx.jface.text.ITextHoverExtension; // packageimport | |
| 134 import dwtx.jface.text.IEventConsumer; // packageimport | |
| 135 import dwtx.jface.text.IDocument; // packageimport | |
| 136 import dwtx.jface.text.IWidgetTokenKeeper; // packageimport | |
| 137 import dwtx.jface.text.DocumentCommand; // packageimport | |
| 138 import dwtx.jface.text.TypedPosition; // packageimport | |
| 139 import dwtx.jface.text.IEditingSupportRegistry; // packageimport | |
| 140 import dwtx.jface.text.IDocumentPartitionerExtension; // packageimport | |
| 141 import dwtx.jface.text.AbstractHoverInformationControlManager; // packageimport | |
| 142 import dwtx.jface.text.IEditingSupport; // packageimport | |
| 143 import dwtx.jface.text.IMarkSelection; // packageimport | |
| 144 import dwtx.jface.text.ISlaveDocumentManager; // packageimport | |
| 145 import dwtx.jface.text.DocumentEvent; // packageimport | |
| 146 import dwtx.jface.text.DocumentPartitioningChangedEvent; // packageimport | |
| 147 import dwtx.jface.text.ITextStore; // packageimport | |
| 148 import dwtx.jface.text.JFaceTextMessages; // packageimport | |
| 149 import dwtx.jface.text.DocumentRewriteSessionEvent; // packageimport | |
| 150 import dwtx.jface.text.SequentialRewriteTextStore; // packageimport | |
| 151 import dwtx.jface.text.DocumentRewriteSessionType; // packageimport | |
| 152 import dwtx.jface.text.TextAttribute; // packageimport | |
| 153 import dwtx.jface.text.ITextViewerExtension4; // packageimport | |
| 154 import dwtx.jface.text.ITypedRegion; // packageimport | |
| 155 | |
| 129 | 156 module dwtx.jface.text.CursorLinePainter; |
| 157 | |
| 158 import dwt.dwthelper.utils; | |
| 159 | |
| 160 | |
| 161 | |
| 162 | |
| 163 import dwt.custom.LineBackgroundEvent; | |
| 164 import dwt.custom.LineBackgroundListener; | |
| 165 import dwt.custom.StyledText; | |
| 166 import dwt.graphics.Color; | |
| 167 import dwt.graphics.Point; | |
| 168 | |
| 169 | |
| 170 /** | |
| 171 * A painter the draws the background of the caret line in a configured color. | |
| 172 * <p> | |
| 173 * Clients usually instantiate and configure object of this class.</p> | |
| 174 * <p> | |
| 175 * This class is not intended to be subclassed.</p> | |
| 176 * | |
| 177 * @since 2.1 | |
| 178 * @noextend This class is not intended to be subclassed by clients. | |
| 179 */ | |
| 180 public class CursorLinePainter : IPainter, LineBackgroundListener { | |
| 181 | |
| 182 /** The viewer the painter works on */ | |
| 183 private final ITextViewer fViewer; | |
| 184 /** The cursor line back ground color */ | |
| 185 private Color fHighlightColor; | |
| 186 /** The paint position manager for managing the line coordinates */ | |
| 187 private IPaintPositionManager fPositionManager; | |
| 188 | |
| 189 /** Keeps track of the line to be painted */ | |
| 190 private Position fCurrentLine= new Position(0, 0); | |
| 191 /** Keeps track of the line to be cleared */ | |
| 192 private Position fLastLine= new Position(0, 0); | |
| 193 /** Keeps track of the line number of the last painted line */ | |
| 194 private int fLastLineNumber= -1; | |
| 195 /** Indicates whether this painter is active */ | |
| 196 private bool fIsActive; | |
| 197 | |
| 198 /** | |
| 199 * Creates a new painter for the given source viewer. | |
| 200 * | |
| 201 * @param textViewer the source viewer for which to create a painter | |
| 202 */ | |
|
133
7d818bd32d63
Fix ctors to this with gvim regexp
Frank Benoit <benoit@tionex.de>
parents:
131
diff
changeset
|
203 public this(ITextViewer textViewer) { |
| 129 | 204 fViewer= textViewer; |
| 205 } | |
| 206 | |
| 207 /** | |
| 208 * Sets the color in which to draw the background of the cursor line. | |
| 209 * | |
| 210 * @param highlightColor the color in which to draw the background of the cursor line | |
| 211 */ | |
| 212 public void setHighlightColor(Color highlightColor) { | |
| 213 fHighlightColor= highlightColor; | |
| 214 } | |
| 215 | |
| 216 /* | |
| 217 * @see LineBackgroundListener#lineGetBackground(LineBackgroundEvent) | |
| 218 */ | |
| 219 public void lineGetBackground(LineBackgroundEvent event) { | |
| 220 // don't use cached line information because of asynchronous painting | |
| 221 | |
| 222 StyledText textWidget= fViewer.getTextWidget(); | |
| 223 if (textWidget !is null) { | |
| 224 | |
| 225 int caret= textWidget.getCaretOffset(); | |
| 226 int length= event.lineText.length(); | |
| 227 | |
| 228 if (event.lineOffset <= caret && caret <= event.lineOffset + length) | |
| 229 event.lineBackground= fHighlightColor; | |
| 230 else | |
| 231 event.lineBackground= textWidget.getBackground(); | |
| 232 } | |
| 233 } | |
| 234 | |
| 235 /** | |
| 236 * Updates all the cached information about the lines to be painted and to be cleared. Returns <code>true</code> | |
| 237 * if the line number of the cursor line has changed. | |
| 238 * | |
| 239 * @return <code>true</code> if cursor line changed | |
| 240 */ | |
| 241 private bool updateHighlightLine() { | |
| 242 try { | |
| 243 | |
| 244 IDocument document= fViewer.getDocument(); | |
| 245 int modelCaret= getModelCaret(); | |
| 246 int lineNumber= document.getLineOfOffset(modelCaret); | |
| 247 | |
| 248 // redraw if the current line number is different from the last line number we painted | |
| 249 // initially fLastLineNumber is -1 | |
| 250 if (lineNumber !is fLastLineNumber || !fCurrentLine.overlapsWith(modelCaret, 0)) { | |
| 251 | |
| 252 fLastLine.offset= fCurrentLine.offset; | |
| 253 fLastLine.length= fCurrentLine.length; | |
| 254 fLastLine.isDeleted= fCurrentLine.isDeleted; | |
| 255 | |
| 256 if (fCurrentLine.isDeleted) { | |
| 257 fCurrentLine.isDeleted= false; | |
| 258 fPositionManager.managePosition(fCurrentLine); | |
| 259 } | |
| 260 | |
| 261 fCurrentLine.offset= document.getLineOffset(lineNumber); | |
| 262 if (lineNumber is document.getNumberOfLines() - 1) | |
| 263 fCurrentLine.length= document.getLength() - fCurrentLine.offset; | |
| 264 else | |
| 265 fCurrentLine.length= document.getLineOffset(lineNumber + 1) - fCurrentLine.offset; | |
| 266 | |
| 267 fLastLineNumber= lineNumber; | |
| 268 return true; | |
| 269 | |
| 270 } | |
| 271 | |
| 272 } catch (BadLocationException e) { | |
| 273 } | |
| 274 | |
| 275 return false; | |
| 276 } | |
| 277 | |
| 278 /** | |
| 279 * Returns the location of the caret as offset in the source viewer's | |
| 280 * input document. | |
| 281 * | |
| 282 * @return the caret location | |
| 283 */ | |
| 284 private int getModelCaret() { | |
| 285 int widgetCaret= fViewer.getTextWidget().getCaretOffset(); | |
| 138 | 286 if ( cast(ITextViewerExtension5)fViewer ) { |
| 134 | 287 ITextViewerExtension5 extension= cast(ITextViewerExtension5) fViewer; |
| 129 | 288 return extension.widgetOffset2ModelOffset(widgetCaret); |
| 289 } | |
| 290 IRegion visible= fViewer.getVisibleRegion(); | |
| 291 return widgetCaret + visible.getOffset(); | |
| 292 } | |
| 293 | |
| 294 /** | |
| 295 * Assumes the given position to specify offset and length of a line to be painted. | |
| 296 * | |
| 297 * @param position the specification of the line to be painted | |
| 298 */ | |
| 299 private void drawHighlightLine(Position position) { | |
| 300 | |
| 301 // if the position that is about to be drawn was deleted then we can't | |
| 302 if (position.isDeleted()) | |
| 303 return; | |
| 304 | |
| 305 int widgetOffset= 0; | |
| 138 | 306 if ( cast(ITextViewerExtension5)fViewer ) { |
| 129 | 307 |
| 134 | 308 ITextViewerExtension5 extension= cast(ITextViewerExtension5) fViewer; |
| 129 | 309 widgetOffset= extension.modelOffset2WidgetOffset(position.getOffset()); |
| 310 if (widgetOffset is -1) | |
| 311 return; | |
| 312 | |
| 313 } else { | |
| 314 | |
| 315 IRegion visible= fViewer.getVisibleRegion(); | |
| 316 widgetOffset= position.getOffset() - visible.getOffset(); | |
| 317 if (widgetOffset < 0 || visible.getLength() < widgetOffset ) | |
| 318 return; | |
| 319 } | |
| 320 | |
| 321 StyledText textWidget= fViewer.getTextWidget(); | |
| 322 // check for https://bugs.eclipse.org/bugs/show_bug.cgi?id=64898 | |
| 323 // this is a guard against the symptoms but not the actual solution | |
| 324 if (0 <= widgetOffset && widgetOffset <= textWidget.getCharCount()) { | |
| 325 Point upperLeft= textWidget.getLocationAtOffset(widgetOffset); | |
| 326 int width= textWidget.getClientArea().width + textWidget.getHorizontalPixel(); | |
| 327 int height= textWidget.getLineHeight(widgetOffset); | |
| 328 textWidget.redraw(0, upperLeft.y, width, height, false); | |
| 329 } | |
| 330 } | |
| 331 | |
| 332 /* | |
| 333 * @see IPainter#deactivate(bool) | |
| 334 */ | |
| 335 public void deactivate(bool redraw) { | |
| 336 if (fIsActive) { | |
| 337 fIsActive= false; | |
| 338 | |
| 339 /* on turning off the feature one has to paint the currently | |
| 340 * highlighted line with the standard background color | |
| 341 */ | |
| 342 if (redraw) | |
| 343 drawHighlightLine(fCurrentLine); | |
| 344 | |
| 345 fViewer.getTextWidget().removeLineBackgroundListener(this); | |
| 346 | |
| 347 if (fPositionManager !is null) | |
| 348 fPositionManager.unmanagePosition(fCurrentLine); | |
| 349 | |
| 350 fLastLineNumber= -1; | |
| 351 fCurrentLine.offset= 0; | |
| 352 fCurrentLine.length= 0; | |
| 353 } | |
| 354 } | |
| 355 | |
| 356 /* | |
| 357 * @see IPainter#dispose() | |
| 358 */ | |
| 359 public void dispose() { | |
| 360 } | |
| 361 | |
| 362 /* | |
| 363 * @see IPainter#paint(int) | |
| 364 */ | |
| 365 public void paint(int reason) { | |
| 366 if (fViewer.getDocument() is null) { | |
| 367 deactivate(false); | |
| 368 return; | |
| 369 } | |
| 370 | |
| 371 StyledText textWidget= fViewer.getTextWidget(); | |
| 372 | |
| 373 // check selection | |
| 374 Point selection= textWidget.getSelection(); | |
| 375 int startLine= textWidget.getLineAtOffset(selection.x); | |
| 376 int endLine= textWidget.getLineAtOffset(selection.y); | |
| 377 if (startLine !is endLine) { | |
| 378 deactivate(true); | |
| 379 return; | |
| 380 } | |
| 381 | |
| 382 // initialization | |
| 383 if (!fIsActive) { | |
| 384 textWidget.addLineBackgroundListener(this); | |
| 385 fPositionManager.managePosition(fCurrentLine); | |
| 386 fIsActive= true; | |
| 387 } | |
| 388 | |
| 389 //redraw line highlight only if it hasn't been drawn yet on the respective line | |
| 390 if (updateHighlightLine()) { | |
| 391 // clear last line | |
| 392 drawHighlightLine(fLastLine); | |
| 393 // draw new line | |
| 394 drawHighlightLine(fCurrentLine); | |
| 395 } | |
| 396 } | |
| 397 | |
| 398 /* | |
| 399 * @see IPainter#setPositionManager(IPaintPositionManager) | |
| 400 */ | |
| 401 public void setPositionManager(IPaintPositionManager manager) { | |
| 402 fPositionManager = manager; | |
| 403 } | |
| 404 } |