projects/dwt2: org.eclipse.jface.text/src/org/eclipse/jface/internal/text/source/DiffPainter.d annotate

author	Frank Benoit <benoit@tionex.de>
date	Sat, 14 Mar 2009 18:23:29 +0100
parents
children

rev	line source
12 bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	1 /*******************************************************************************
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	2 * Copyright (c) 2006 IBM Corporation and others.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	3 * All rights reserved. This program and the accompanying materials
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	4 * are made available under the terms of the Eclipse Public License v1.0
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	5 * which accompanies this distribution, and is available at
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	6 * http://www.eclipse.org/legal/epl-v10.html
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	7 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	8 * Contributors:
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	9 * IBM Corporation - initial API and implementation
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	10 * Port to the D programming language:
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	11 * Frank Benoit <benoit@tionex.de>
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	12 *******************************************************************************/
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	13 module org.eclipse.jface.internal.text.source.DiffPainter;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	14
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	15
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	16
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	17 import java.lang.all;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	18 import java.util.Set;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	19
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	20
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	21
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	22
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	23 import org.eclipse.swt.SWT;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	24 import org.eclipse.swt.custom.StyledText;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	25 import org.eclipse.swt.events.DisposeEvent;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	26 import org.eclipse.swt.events.DisposeListener;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	27 import org.eclipse.swt.graphics.Color;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	28 import org.eclipse.swt.graphics.GC;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	29 import org.eclipse.swt.graphics.RGB;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	30 import org.eclipse.swt.widgets.Canvas;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	31 import org.eclipse.swt.widgets.Control;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	32 import org.eclipse.swt.widgets.Display;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	33 import org.eclipse.core.runtime.Assert;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	34 import org.eclipse.jface.text.ITextViewer;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	35 import org.eclipse.jface.text.JFaceTextUtil;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	36 import org.eclipse.jface.text.source.CompositeRuler;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	37 import org.eclipse.jface.text.source.IAnnotationHover;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	38 import org.eclipse.jface.text.source.IAnnotationModel;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	39 import org.eclipse.jface.text.source.IAnnotationModelExtension;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	40 import org.eclipse.jface.text.source.IAnnotationModelListener;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	41 import org.eclipse.jface.text.source.IChangeRulerColumn;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	42 import org.eclipse.jface.text.source.ILineDiffInfo;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	43 import org.eclipse.jface.text.source.ILineDiffer;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	44 import org.eclipse.jface.text.source.ILineDifferExtension2;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	45 import org.eclipse.jface.text.source.ILineRange;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	46 import org.eclipse.jface.text.source.ISharedTextColors;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	47 import org.eclipse.jface.text.source.IVerticalRulerColumn;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	48
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	49
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	50 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	51 * A strategy for painting the quick diff colors onto the vertical ruler column. It also manages the
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	52 * quick diff hover.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	53 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	54 * @since 3.2
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	55 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	56 public final class DiffPainter {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	57 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	58 * Internal listener class that will update the ruler when the underlying model changes.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	59 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	60 private class AnnotationListener : IAnnotationModelListener {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	61 /*
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	62 * @see org.eclipse.jface.text.source.IAnnotationModelListener#modelChanged(org.eclipse.jface.text.source.IAnnotationModel)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	63 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	64 public void modelChanged(IAnnotationModel model) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	65 postRedraw();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	66 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	67 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	68
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	69 /** The vertical ruler column that delegates painting to this painter. */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	70 private const IVerticalRulerColumn fColumn;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	71 /** The parent ruler. */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	72 private CompositeRuler fParentRuler;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	73 /** The column's control, typically a {@link Canvas}, possibly <code>null</code>. */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	74 private Control fControl;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	75 /** The text viewer that the column is attached to. */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	76 private ITextViewer fViewer;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	77 /** The viewer's text widget. */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	78 private StyledText fWidget;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	79 /** The line differ extracted from the annotation model. */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	80 private ILineDiffer fLineDiffer= null;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	81 /** Color for changed lines */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	82 private Color fAddedColor;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	83 /** Color for added lines */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	84 private Color fChangedColor;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	85 /** Color for the deleted line indicator */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	86 private Color fDeletedColor;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	87 /** The background color. */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	88 private Color fBackground;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	89 /** The ruler's hover */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	90 private IAnnotationHover fHover;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	91 /** The internal listener */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	92 private const AnnotationListener fAnnotationListener;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	93 /** The shared color provider, possibly <code>null</code>. */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	94 private const ISharedTextColors fSharedColors;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	95
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	96 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	97 * Creates a new diff painter for a vertical ruler column.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	98 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	99 * @param column the column that will delegate{@link #paint(GC, ILineRange) painting} to the
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	100 * newly created painter.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	101 * @param sharedColors a shared colors object to store shaded colors in, may be
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	102 * <code>null</code>
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	103 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	104 public this(IVerticalRulerColumn column, ISharedTextColors sharedColors) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	105 fAnnotationListener= new AnnotationListener();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	106 Assert.isLegal(column !is null);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	107 fColumn= column;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	108 fSharedColors= sharedColors;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	109 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	110
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	111 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	112 * Sets the parent ruler - the delegating column must call this method as soon as it creates its
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	113 * control.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	114 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	115 * @param parentRuler the parent ruler
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	116 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	117 public void setParentRuler(CompositeRuler parentRuler) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	118 fParentRuler= parentRuler;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	119 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	120
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	121 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	122 * Sets the quick diff hover later returned by {@link #getHover()}.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	123 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	124 * @param hover the hover
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	125 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	126 public void setHover(IAnnotationHover hover) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	127 fHover= hover;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	128 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	129
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	130 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	131 * Returns the quick diff hover set by {@link #setHover(IAnnotationHover)}.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	132 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	133 * @return the quick diff hover set by {@link #setHover(IAnnotationHover)}
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	134 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	135 public IAnnotationHover getHover() {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	136 return fHover;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	137 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	138
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	139 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	140 * Sets the background color.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	141 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	142 * @param background the background color, <code>null</code> to use the platform's list background
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	143 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	144 public void setBackground(Color background) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	145 fBackground= background;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	146 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	147
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	148 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	149 * Delegates the painting of the quick diff colors to this painter. The painter will draw the
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	150 * color boxes onto the passed {@link GC} for all model (document) lines in
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	151 * <code>visibleModelLines</code>.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	152 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	153 * @param gc the {@link GC} to draw onto
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	154 * @param visibleModelLines the lines (in document offsets) that are currently (perhaps only
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	155 * partially) visible
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	156 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	157 public void paint(GC gc, ILineRange visibleModelLines) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	158 connectIfNeeded();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	159 if (!isConnected())
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	160 return;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	161
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	162 // draw diff info
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	163 final int lastLine= end(visibleModelLines);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	164 final int width= getWidth();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	165 final Color deletionColor= getDeletionColor();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	166 for (int line= visibleModelLines.getStartLine(); line < lastLine; line++) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	167 paintLine(line, gc, width, deletionColor);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	168 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	169 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	170
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	171 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	172 * Ensures that the column is fully instantiated, i.e. has a control, and that the viewer is
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	173 * visible.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	174 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	175 private void connectIfNeeded() {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	176 if (isConnected() \|\| fParentRuler is null)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	177 return;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	178
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	179 fViewer= fParentRuler.getTextViewer();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	180 if (fViewer is null)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	181 return;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	182
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	183 fWidget= fViewer.getTextWidget();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	184 if (fWidget is null)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	185 return;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	186
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	187 fControl= fColumn.getControl();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	188 if (fControl is null)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	189 return;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	190
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	191 fControl.addDisposeListener(new class() DisposeListener {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	192 /*
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	193 * @see org.eclipse.swt.events.DisposeListener#widgetDisposed(org.eclipse.swt.events.DisposeEvent)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	194 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	195 public void widgetDisposed(DisposeEvent e) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	196 handleDispose();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	197 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	198 });
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	199 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	200
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	201 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	202 * Returns <code>true</code> if the column is fully connected.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	203 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	204 * @return <code>true</code> if the column is fully connected, false otherwise
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	205 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	206 private bool isConnected() {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	207 return fControl !is null;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	208 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	209
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	210 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	211 * Disposes of this painter and releases any resources.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	212 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	213 private void handleDispose() {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	214 if (fLineDiffer !is null) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	215 (cast(IAnnotationModel) fLineDiffer).removeAnnotationModelListener(fAnnotationListener);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	216 fLineDiffer= null;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	217 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	218 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	219
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	220 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	221 * Paints a single model line onto <code>gc</code>.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	222 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	223 * @param line the model line to paint
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	224 * @param gc the {@link GC} to paint onto
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	225 * @param width the width of the column
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	226 * @param deletionColor the background color used to indicate deletions
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	227 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	228 private void paintLine(int line, GC gc, int width, Color deletionColor) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	229 int widgetLine= JFaceTextUtil.modelLineToWidgetLine(fViewer, line);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	230 if (widgetLine is -1)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	231 return;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	232
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	233 ILineDiffInfo info= getDiffInfo(line);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	234
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	235 if (info !is null) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	236 int y= fWidget.getLinePixel(widgetLine);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	237 int lineHeight= fWidget.getLineHeight(fWidget.getOffsetAtLine(widgetLine));
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	238
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	239 // draw background color if special
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	240 if (hasSpecialColor(info)) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	241 gc.setBackground(getColor(info));
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	242 gc.fillRectangle(0, y, width, lineHeight);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	243 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	244
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	245 /* Deletion Indicator: Simply a horizontal line */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	246 int delBefore= info.getRemovedLinesAbove();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	247 int delBelow= info.getRemovedLinesBelow();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	248 if (delBefore > 0 \|\| delBelow > 0) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	249 gc.setForeground(deletionColor);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	250 if (delBefore > 0)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	251 gc.drawLine(0, y, width, y);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	252 if (delBelow > 0)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	253 gc.drawLine(0, y + lineHeight - 1, width, y + lineHeight - 1);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	254 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	255 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	256 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	257
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	258 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	259 * Returns whether the line background differs from the default.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	260 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	261 * @param info the info being queried
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	262 * @return <code>true</code> if <code>info</code> describes either a changed or an added
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	263 * line.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	264 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	265 private bool hasSpecialColor(ILineDiffInfo info) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	266 return info.getChangeType() is ILineDiffInfo.ADDED \|\| info.getChangeType() is ILineDiffInfo.CHANGED;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	267 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	268
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	269 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	270 * Retrieves the <code>ILineDiffInfo</code> for <code>line</code> from the model. There are
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	271 * optimizations for direct access and sequential access patterns.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	272 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	273 * @param line the line we want the info for.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	274 * @return the <code>ILineDiffInfo</code> for <code>line</code>, or <code>null</code>.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	275 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	276 private ILineDiffInfo getDiffInfo(int line) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	277 if (fLineDiffer !is null)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	278 return fLineDiffer.getLineInfo(line);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	279
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	280 return null;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	281 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	282
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	283 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	284 * Returns the color for deleted lines.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	285 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	286 * @return the color to be used for the deletion indicator
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	287 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	288 private Color getDeletionColor() {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	289 return fDeletedColor is null ? getBackground() : fDeletedColor;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	290 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	291
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	292 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	293 * Returns the color for the given line diff info.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	294 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	295 * @param info the <code>ILineDiffInfo</code> being queried
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	296 * @return the correct background color for the line type being described by <code>info</code>
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	297 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	298 private Color getColor(ILineDiffInfo info) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	299 Assert.isTrue(info !is null && info.getChangeType() !is ILineDiffInfo.UNCHANGED);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	300 Color ret= null;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	301 switch (info.getChangeType()) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	302 case ILineDiffInfo.CHANGED:
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	303 ret= getShadedColor(fChangedColor);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	304 break;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	305 case ILineDiffInfo.ADDED:
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	306 ret= getShadedColor(fAddedColor);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	307 break;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	308 default:
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	309 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	310 return ret is null ? getBackground() : ret;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	311 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	312
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	313 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	314 * Sets the background color for changed lines.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	315 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	316 * @param color the new color to be used for the changed lines background
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	317 * @return the shaded color
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	318 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	319 private Color getShadedColor(Color color) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	320 if (color is null)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	321 return null;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	322
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	323 if (fSharedColors is null)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	324 return color;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	325
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	326 RGB baseRGB= color.getRGB();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	327 RGB background= getBackground().getRGB();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	328
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	329 bool darkBase= isDark(baseRGB);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	330 bool darkBackground= isDark(background);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	331 if (darkBase && darkBackground)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	332 background= new RGB(255, 255, 255);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	333 else if (!darkBase && !darkBackground)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	334 background= new RGB(0, 0, 0);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	335
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	336 return fSharedColors.getColor(interpolate(baseRGB, background, 0.6));
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	337 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	338
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	339 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	340 * Sets the annotation model.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	341 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	342 * @param model the annotation model, possibly <code>null</code>
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	343 * @see IVerticalRulerColumn#setModel(IAnnotationModel)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	344 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	345 public void setModel(IAnnotationModel model) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	346 IAnnotationModel newModel;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	347 if ( cast(IAnnotationModelExtension)model )
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	348 newModel= (cast(IAnnotationModelExtension) model).getAnnotationModel(stringcast(IChangeRulerColumn.QUICK_DIFF_MODEL_ID));
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	349 else
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	350 newModel= model;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	351
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	352 setDiffer(newModel);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	353 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	354
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	355 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	356 * Sets the line differ.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	357 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	358 * @param differ the line differ
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	359 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	360 private void setDiffer(IAnnotationModel differ) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	361 if ( cast(ILineDiffer)differ ) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	362 if ( cast(Object)fLineDiffer !is cast(Object)differ) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	363 if (fLineDiffer !is null)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	364 (cast(IAnnotationModel) fLineDiffer).removeAnnotationModelListener(fAnnotationListener);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	365 fLineDiffer= cast(ILineDiffer) differ;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	366 if (fLineDiffer !is null)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	367 (cast(IAnnotationModel) fLineDiffer).addAnnotationModelListener(fAnnotationListener);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	368 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	369 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	370 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	371
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	372 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	373 * Triggers a redraw in the display thread.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	374 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	375 private final void postRedraw() {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	376 if (isConnected() && !fControl.isDisposed()) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	377 Display d= fControl.getDisplay();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	378 if (d !is null) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	379 d.asyncExec(new class() Runnable {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	380 public void run() {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	381 redraw();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	382 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	383 });
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	384 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	385 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	386 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	387
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	388 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	389 * Triggers redrawing of the column.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	390 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	391 private void redraw() {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	392 fColumn.redraw();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	393 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	394
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	395 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	396 * Returns the width of the column.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	397 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	398 * @return the width of the column
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	399 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	400 private int getWidth() {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	401 return fColumn.getWidth();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	402 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	403
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	404 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	405 * Computes the end index of a line range.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	406 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	407 * @param range a line range
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	408 * @return the last line (exclusive) of <code>range</code>
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	409 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	410 private static int end(ILineRange range) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	411 return range.getStartLine() + range.getNumberOfLines();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	412 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	413
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	414 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	415 * Returns the System background color for list widgets or the set background.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	416 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	417 * @return the System background color for list widgets
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	418 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	419 private Color getBackground() {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	420 if (fBackground is null)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	421 return fWidget.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	422 return fBackground;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	423 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	424
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	425 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	426 * Sets the color for added lines.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	427 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	428 * @param addedColor the color for added lines
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	429 * @see org.eclipse.jface.text.source.IChangeRulerColumn#setAddedColor(org.eclipse.swt.graphics.Color)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	430 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	431 public void setAddedColor(Color addedColor) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	432 fAddedColor= addedColor;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	433 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	434
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	435 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	436 * Sets the color for changed lines.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	437 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	438 * @param changedColor the color for changed lines
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	439 * @see org.eclipse.jface.text.source.IChangeRulerColumn#setChangedColor(org.eclipse.swt.graphics.Color)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	440 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	441 public void setChangedColor(Color changedColor) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	442 fChangedColor= changedColor;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	443 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	444
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	445 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	446 * Sets the color for deleted lines.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	447 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	448 * @param deletedColor the color for deleted lines
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	449 * @see org.eclipse.jface.text.source.IChangeRulerColumn#setDeletedColor(org.eclipse.swt.graphics.Color)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	450 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	451 public void setDeletedColor(Color deletedColor) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	452 fDeletedColor= deletedColor;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	453 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	454
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	455 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	456 * Returns <code>true</code> if the receiver can provide a hover for a certain document line.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	457 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	458 * @param activeLine the document line of interest
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	459 * @return <code>true</code> if the receiver can provide a hover
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	460 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	461 public bool hasHover(int activeLine) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	462 return true;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	463 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	464
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	465 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	466 * Returns the display character for the accessibility mode for a certain model line.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	467 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	468 * @param line the document line of interest
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	469 * @return the display character for <code>line</code>
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	470 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	471 public String getDisplayCharacter(int line) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	472 return getDisplayCharacter(getDiffInfo(line));
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	473 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	474
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	475 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	476 * Returns the character to display in character display mode for the given
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	477 * <code>ILineDiffInfo</code>
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	478 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	479 * @param info the <code>ILineDiffInfo</code> being queried
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	480 * @return the character indication for <code>info</code>
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	481 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	482 private String getDisplayCharacter(ILineDiffInfo info) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	483 if (info is null)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	484 return " "; //$NON-NLS-1$
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	485 switch (info.getChangeType()) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	486 case ILineDiffInfo.CHANGED:
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	487 return "~"; //$NON-NLS-1$
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	488 case ILineDiffInfo.ADDED:
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	489 return "+"; //$NON-NLS-1$
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	490 default:
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	491 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	492 return " "; //$NON-NLS-1$
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	493 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	494
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	495 /**
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	496 * Returns a specification of a color that lies between the given foreground and background
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	497 * color using the given scale factor.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	498 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	499 * @param fg the foreground color
bc29606a740c Added dwt-addons in original directory structure of eclipse.org Frank Benoit <benoit@tionex.de> parents: diff changeset	500 * @param bg the background color

12

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1 /*******************************************************************************

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4 * are made available under the terms of the Eclipse Public License v1.0

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5 * which accompanies this distribution, and is available at

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6 * http://www.eclipse.org/legal/epl-v10.html

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7 *

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8 * Contributors:

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9 * IBM Corporation - initial API and implementation

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10 * Port to the D programming language:

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11 * Frank Benoit <benoit@tionex.de>

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12 *******************************************************************************/

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13 module org.eclipse.jface.internal.text.source.DiffPainter;

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15

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16

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17 import java.lang.all;

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18 import java.util.Set;

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21

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22

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23 import org.eclipse.swt.SWT;

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24 import org.eclipse.swt.custom.StyledText;

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25 import org.eclipse.swt.events.DisposeEvent;

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26 import org.eclipse.swt.events.DisposeListener;

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27 import org.eclipse.swt.graphics.Color;

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28 import org.eclipse.swt.graphics.GC;

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29 import org.eclipse.swt.graphics.RGB;

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30 import org.eclipse.swt.widgets.Canvas;

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31 import org.eclipse.swt.widgets.Control;

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32 import org.eclipse.swt.widgets.Display;

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33 import org.eclipse.core.runtime.Assert;

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34 import org.eclipse.jface.text.ITextViewer;

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35 import org.eclipse.jface.text.JFaceTextUtil;

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36 import org.eclipse.jface.text.source.CompositeRuler;

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37 import org.eclipse.jface.text.source.IAnnotationHover;

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38 import org.eclipse.jface.text.source.IAnnotationModel;

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39 import org.eclipse.jface.text.source.IAnnotationModelExtension;

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40 import org.eclipse.jface.text.source.IAnnotationModelListener;

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41 import org.eclipse.jface.text.source.IChangeRulerColumn;

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42 import org.eclipse.jface.text.source.ILineDiffInfo;

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43 import org.eclipse.jface.text.source.ILineDiffer;

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44 import org.eclipse.jface.text.source.ILineDifferExtension2;

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45 import org.eclipse.jface.text.source.ILineRange;

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46 import org.eclipse.jface.text.source.ISharedTextColors;

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47 import org.eclipse.jface.text.source.IVerticalRulerColumn;

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48

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49

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50 /**

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51 * A strategy for painting the quick diff colors onto the vertical ruler column. It also manages the

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52 * quick diff hover.

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53 *

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54 * @since 3.2

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55 */

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56 public final class DiffPainter {

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57 /**

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58 * Internal listener class that will update the ruler when the underlying model changes.

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59 */

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60 private class AnnotationListener : IAnnotationModelListener {

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61 /*

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62 * @see org.eclipse.jface.text.source.IAnnotationModelListener#modelChanged(org.eclipse.jface.text.source.IAnnotationModel)

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63 */

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64 public void modelChanged(IAnnotationModel model) {

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65 postRedraw();

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66 }

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67 }

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68

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69 /** The vertical ruler column that delegates painting to this painter. */

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70 private const IVerticalRulerColumn fColumn;

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71 /** The parent ruler. */

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72 private CompositeRuler fParentRuler;

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73 /** The column's control, typically a {@link Canvas}, possibly <code>null</code>. */

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74 private Control fControl;

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75 /** The text viewer that the column is attached to. */

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76 private ITextViewer fViewer;

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77 /** The viewer's text widget. */

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78 private StyledText fWidget;

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79 /** The line differ extracted from the annotation model. */

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80 private ILineDiffer fLineDiffer= null;

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81 /** Color for changed lines */

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82 private Color fAddedColor;

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83 /** Color for added lines */

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84 private Color fChangedColor;

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85 /** Color for the deleted line indicator */

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86 private Color fDeletedColor;

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87 /** The background color. */

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88 private Color fBackground;

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89 /** The ruler's hover */

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90 private IAnnotationHover fHover;

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91 /** The internal listener */

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92 private const AnnotationListener fAnnotationListener;

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93 /** The shared color provider, possibly <code>null</code>. */

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94 private const ISharedTextColors fSharedColors;

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95

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96 /**

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97 * Creates a new diff painter for a vertical ruler column.

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98 *

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99 * @param column the column that will delegate{@link #paint(GC, ILineRange) painting} to the

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100 * newly created painter.

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101 * @param sharedColors a shared colors object to store shaded colors in, may be

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102 * <code>null</code>

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103 */

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104 public this(IVerticalRulerColumn column, ISharedTextColors sharedColors) {

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105 fAnnotationListener= new AnnotationListener();

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106 Assert.isLegal(column !is null);

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107 fColumn= column;

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108 fSharedColors= sharedColors;

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109 }

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110

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111 /**

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112 * Sets the parent ruler - the delegating column must call this method as soon as it creates its

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113 * control.

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114 *

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115 * @param parentRuler the parent ruler

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116 */

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117 public void setParentRuler(CompositeRuler parentRuler) {

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118 fParentRuler= parentRuler;

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119 }

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120

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121 /**

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122 * Sets the quick diff hover later returned by {@link #getHover()}.

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123 *

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124 * @param hover the hover

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125 */

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126 public void setHover(IAnnotationHover hover) {

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127 fHover= hover;

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128 }

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129

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130 /**

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131 * Returns the quick diff hover set by {@link #setHover(IAnnotationHover)}.

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132 *

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133 * @return the quick diff hover set by {@link #setHover(IAnnotationHover)}

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134 */

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135 public IAnnotationHover getHover() {

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136 return fHover;

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137 }

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138

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139 /**

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140 * Sets the background color.

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141 *

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142 * @param background the background color, <code>null</code> to use the platform's list background

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143 */

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144 public void setBackground(Color background) {

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145 fBackground= background;

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146 }

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147

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148 /**

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149 * Delegates the painting of the quick diff colors to this painter. The painter will draw the

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150 * color boxes onto the passed {@link GC} for all model (document) lines in

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151 * <code>visibleModelLines</code>.

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152 *

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153 * @param gc the {@link GC} to draw onto

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154 * @param visibleModelLines the lines (in document offsets) that are currently (perhaps only

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155 * partially) visible

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156 */

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157 public void paint(GC gc, ILineRange visibleModelLines) {

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158 connectIfNeeded();

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159 if (!isConnected())

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160 return;

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161

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162 // draw diff info

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163 final int lastLine= end(visibleModelLines);

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164 final int width= getWidth();

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165 final Color deletionColor= getDeletionColor();

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166 for (int line= visibleModelLines.getStartLine(); line < lastLine; line++) {

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167 paintLine(line, gc, width, deletionColor);

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168 }

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169 }

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170

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171 /**

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172 * Ensures that the column is fully instantiated, i.e. has a control, and that the viewer is

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173 * visible.

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174 */

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175 private void connectIfNeeded() {

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176 if (isConnected() || fParentRuler is null)

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177 return;

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178

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179 fViewer= fParentRuler.getTextViewer();

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180 if (fViewer is null)

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181 return;

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182

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183 fWidget= fViewer.getTextWidget();

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184 if (fWidget is null)

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185 return;

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186

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187 fControl= fColumn.getControl();

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188 if (fControl is null)

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189 return;

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190

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191 fControl.addDisposeListener(new class() DisposeListener {

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192 /*

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193 * @see org.eclipse.swt.events.DisposeListener#widgetDisposed(org.eclipse.swt.events.DisposeEvent)

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194 */

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195 public void widgetDisposed(DisposeEvent e) {

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196 handleDispose();

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197 }

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198 });

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199 }

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200

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201 /**

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202 * Returns <code>true</code> if the column is fully connected.

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203 *

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204 * @return <code>true</code> if the column is fully connected, false otherwise

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205 */

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206 private bool isConnected() {

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207 return fControl !is null;

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208 }

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209

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210 /**

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211 * Disposes of this painter and releases any resources.

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212 */

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213 private void handleDispose() {

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214 if (fLineDiffer !is null) {

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215 (cast(IAnnotationModel) fLineDiffer).removeAnnotationModelListener(fAnnotationListener);

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216 fLineDiffer= null;

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217 }

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218 }

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219

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220 /**

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221 * Paints a single model line onto <code>gc</code>.

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222 *

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223 * @param line the model line to paint

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224 * @param gc the {@link GC} to paint onto

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225 * @param width the width of the column

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226 * @param deletionColor the background color used to indicate deletions

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227 */

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228 private void paintLine(int line, GC gc, int width, Color deletionColor) {

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229 int widgetLine= JFaceTextUtil.modelLineToWidgetLine(fViewer, line);

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230 if (widgetLine is -1)

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231 return;

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232

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233 ILineDiffInfo info= getDiffInfo(line);

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234

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235 if (info !is null) {

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236 int y= fWidget.getLinePixel(widgetLine);

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237 int lineHeight= fWidget.getLineHeight(fWidget.getOffsetAtLine(widgetLine));

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238

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239 // draw background color if special

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240 if (hasSpecialColor(info)) {

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241 gc.setBackground(getColor(info));

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242 gc.fillRectangle(0, y, width, lineHeight);

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243 }

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244

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245 /* Deletion Indicator: Simply a horizontal line */

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246 int delBefore= info.getRemovedLinesAbove();

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247 int delBelow= info.getRemovedLinesBelow();

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248 if (delBefore > 0 || delBelow > 0) {

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249 gc.setForeground(deletionColor);

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250 if (delBefore > 0)

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251 gc.drawLine(0, y, width, y);

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252 if (delBelow > 0)

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253 gc.drawLine(0, y + lineHeight - 1, width, y + lineHeight - 1);

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254 }

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255 }

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256 }

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257

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258 /**

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259 * Returns whether the line background differs from the default.

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260 *

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261 * @param info the info being queried

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262 * @return <code>true</code> if <code>info</code> describes either a changed or an added

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263 * line.

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264 */

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265 private bool hasSpecialColor(ILineDiffInfo info) {

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266 return info.getChangeType() is ILineDiffInfo.ADDED || info.getChangeType() is ILineDiffInfo.CHANGED;

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267 }

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268

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269 /**

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270 * Retrieves the <code>ILineDiffInfo</code> for <code>line</code> from the model. There are

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271 * optimizations for direct access and sequential access patterns.

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272 *

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273 * @param line the line we want the info for.

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274 * @return the <code>ILineDiffInfo</code> for <code>line</code>, or <code>null</code>.

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275 */

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276 private ILineDiffInfo getDiffInfo(int line) {

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277 if (fLineDiffer !is null)

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278 return fLineDiffer.getLineInfo(line);

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279

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280 return null;

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281 }

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282

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283 /**

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284 * Returns the color for deleted lines.

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285 *

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286 * @return the color to be used for the deletion indicator

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287 */

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288 private Color getDeletionColor() {

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289 return fDeletedColor is null ? getBackground() : fDeletedColor;

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290 }

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291

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292 /**

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293 * Returns the color for the given line diff info.

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294 *

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295 * @param info the <code>ILineDiffInfo</code> being queried

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296 * @return the correct background color for the line type being described by <code>info</code>

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297 */

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298 private Color getColor(ILineDiffInfo info) {

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299 Assert.isTrue(info !is null && info.getChangeType() !is ILineDiffInfo.UNCHANGED);

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300 Color ret= null;

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301 switch (info.getChangeType()) {

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302 case ILineDiffInfo.CHANGED:

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303 ret= getShadedColor(fChangedColor);

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304 break;

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305 case ILineDiffInfo.ADDED:

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306 ret= getShadedColor(fAddedColor);

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307 break;

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308 default:

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309 }

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310 return ret is null ? getBackground() : ret;

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311 }

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312

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313 /**

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314 * Sets the background color for changed lines.

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315 *

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316 * @param color the new color to be used for the changed lines background

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317 * @return the shaded color

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318 */

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319 private Color getShadedColor(Color color) {

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320 if (color is null)

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321 return null;

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322

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323 if (fSharedColors is null)

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324 return color;

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325

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326 RGB baseRGB= color.getRGB();

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327 RGB background= getBackground().getRGB();

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328

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329 bool darkBase= isDark(baseRGB);

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330 bool darkBackground= isDark(background);

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331 if (darkBase && darkBackground)

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332 background= new RGB(255, 255, 255);

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333 else if (!darkBase && !darkBackground)

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334 background= new RGB(0, 0, 0);

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335

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336 return fSharedColors.getColor(interpolate(baseRGB, background, 0.6));

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337 }

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338

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339 /**

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340 * Sets the annotation model.

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341 *

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342 * @param model the annotation model, possibly <code>null</code>

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343 * @see IVerticalRulerColumn#setModel(IAnnotationModel)

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344 */

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345 public void setModel(IAnnotationModel model) {

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346 IAnnotationModel newModel;

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347 if ( cast(IAnnotationModelExtension)model )

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348 newModel= (cast(IAnnotationModelExtension) model).getAnnotationModel(stringcast(IChangeRulerColumn.QUICK_DIFF_MODEL_ID));

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349 else

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350 newModel= model;

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351

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352 setDiffer(newModel);

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353 }

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354

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355 /**

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356 * Sets the line differ.

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357 *

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358 * @param differ the line differ

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359 */

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360 private void setDiffer(IAnnotationModel differ) {

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361 if ( cast(ILineDiffer)differ ) {

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362 if ( cast(Object)fLineDiffer !is cast(Object)differ) {

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363 if (fLineDiffer !is null)

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364 (cast(IAnnotationModel) fLineDiffer).removeAnnotationModelListener(fAnnotationListener);

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365 fLineDiffer= cast(ILineDiffer) differ;

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366 if (fLineDiffer !is null)

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367 (cast(IAnnotationModel) fLineDiffer).addAnnotationModelListener(fAnnotationListener);

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368 }

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369 }

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370 }

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371

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372 /**

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373 * Triggers a redraw in the display thread.

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374 */

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375 private final void postRedraw() {

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376 if (isConnected() && !fControl.isDisposed()) {

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377 Display d= fControl.getDisplay();

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378 if (d !is null) {

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379 d.asyncExec(new class() Runnable {

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380 public void run() {

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381 redraw();

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382 }

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383 });

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384 }

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385 }

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386 }

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387

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388 /**

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389 * Triggers redrawing of the column.

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390 */

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391 private void redraw() {

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392 fColumn.redraw();

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393 }

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394

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395 /**

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396 * Returns the width of the column.

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397 *

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398 * @return the width of the column

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399 */

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400 private int getWidth() {

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401 return fColumn.getWidth();

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402 }

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403

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404 /**

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405 * Computes the end index of a line range.

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406 *

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407 * @param range a line range

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408 * @return the last line (exclusive) of <code>range</code>

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409 */

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410 private static int end(ILineRange range) {

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411 return range.getStartLine() + range.getNumberOfLines();

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412 }

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413

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414 /**

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415 * Returns the System background color for list widgets or the set background.

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416 *

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417 * @return the System background color for list widgets

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418 */

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419 private Color getBackground() {

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420 if (fBackground is null)

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421 return fWidget.getDisplay().getSystemColor(SWT.COLOR_LIST_BACKGROUND);

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422 return fBackground;

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423 }

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424

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425 /**

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426 * Sets the color for added lines.

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427 *

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428 * @param addedColor the color for added lines

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429 * @see org.eclipse.jface.text.source.IChangeRulerColumn#setAddedColor(org.eclipse.swt.graphics.Color)

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430 */

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431 public void setAddedColor(Color addedColor) {

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432 fAddedColor= addedColor;

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433 }

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434

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435 /**

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diff changeset

436 * Sets the color for changed lines.

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437 *

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438 * @param changedColor the color for changed lines

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439 * @see org.eclipse.jface.text.source.IChangeRulerColumn#setChangedColor(org.eclipse.swt.graphics.Color)

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440 */

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441 public void setChangedColor(Color changedColor) {

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442 fChangedColor= changedColor;

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443 }

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444

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445 /**

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446 * Sets the color for deleted lines.

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447 *

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448 * @param deletedColor the color for deleted lines

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449 * @see org.eclipse.jface.text.source.IChangeRulerColumn#setDeletedColor(org.eclipse.swt.graphics.Color)

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450 */

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451 public void setDeletedColor(Color deletedColor) {

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452 fDeletedColor= deletedColor;

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453 }

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454

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455 /**

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456 * Returns <code>true</code> if the receiver can provide a hover for a certain document line.

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457 *

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458 * @param activeLine the document line of interest

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459 * @return <code>true</code> if the receiver can provide a hover

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460 */

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461 public bool hasHover(int activeLine) {

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462 return true;

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463 }

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464

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465 /**

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466 * Returns the display character for the accessibility mode for a certain model line.

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467 *

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468 * @param line the document line of interest

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469 * @return the display character for <code>line</code>

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470 */

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471 public String getDisplayCharacter(int line) {

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472 return getDisplayCharacter(getDiffInfo(line));

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473 }

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474

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475 /**

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476 * Returns the character to display in character display mode for the given

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477 * <code>ILineDiffInfo</code>

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478 *

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479 * @param info the <code>ILineDiffInfo</code> being queried

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480 * @return the character indication for <code>info</code>

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481 */

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482 private String getDisplayCharacter(ILineDiffInfo info) {

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483 if (info is null)

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484 return " "; //$NON-NLS-1$

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485 switch (info.getChangeType()) {

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486 case ILineDiffInfo.CHANGED:

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487 return "~"; //$NON-NLS-1$

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488 case ILineDiffInfo.ADDED:

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489 return "+"; //$NON-NLS-1$

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490 default:

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491 }

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492 return " "; //$NON-NLS-1$

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493 }

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494

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495 /**

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496 * Returns a specification of a color that lies between the given foreground and background

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497 * color using the given scale factor.

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498 *

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499 * @param fg the foreground color

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500 * @param bg the background color

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501 * @param scale the scale factor

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502 * @return the interpolated color

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503 */

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504 private static RGB interpolate(RGB fg, RGB bg, double scale) {

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505 return new RGB(cast(int) ((1.0 - scale) * fg.red + scale * bg.red), cast(int) ((1.0 - scale) * fg.green + scale * bg.green), cast(int) ((1.0 - scale) * fg.blue + scale * bg.blue));

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506 }

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507

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