Mercurial > projects > dwt-addons

annotate dwtx/draw2d/BufferedGraphicsSource.d @ 98:95307ad235d9

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added Draw2d code, still work in progress
author Frank Benoit <benoit@tionex.de>
date Sun, 03 Aug 2008 00:52:14 +0200
parents
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
98
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
1 /*******************************************************************************
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
2 * Copyright (c) 2000, 2005 IBM Corporation and others.
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
3 * All rights reserved. This program and the accompanying materials
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
4 * are made available under the terms of the Eclipse Public License v1.0
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
5 * which accompanies this distribution, and is available at
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
6 * http://www.eclipse.org/legal/epl-v10.html
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
7 *
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
8 * Contributors:
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
9 * IBM Corporation - initial API and implementation
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
10 * Port to the D programming language:
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
11 * Frank Benoit <benoit@tionex.de>
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
12 *******************************************************************************/
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
13 module dwtx.draw2d.BufferedGraphicsSource;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
14
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
15 import dwt.dwthelper.utils;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
16
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
17
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
18
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
19 import dwt.DWT;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
20 import dwt.DWTError;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
21 import dwt.graphics.GC;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
22 import dwt.graphics.Image;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
23 static import dwt.graphics.Point;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
24 import dwt.widgets.Canvas;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
25 import dwt.widgets.Caret;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
26 import dwt.widgets.Control;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
27 import dwtx.draw2d.geometry.Rectangle;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
28 import dwtx.draw2d.GraphicsSource;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
29 import dwtx.draw2d.Graphics;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
30 import dwtx.draw2d.SWTGraphics;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
31
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
32 class BufferedGraphicsSource : GraphicsSource {
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
33
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
34 private Image imageBuffer;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
35 private GC imageGC;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
36 private GC controlGC;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
37 private Control control;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
38 private Rectangle inUse;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
39
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
40 /**
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
41 * Constructs a new buffered graphics source using the given control.
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
42 * @since 2.1
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
43 * @param c the control
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
44 */
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
45 public this(Control c) {
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
46 control = c;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
47 }
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
48
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
49 /**
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
50 * @see dwtx.draw2d.GraphicsSource#flushGraphics(dwtx.draw2d.geometry.Rectangle)
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
51 */
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
52 public void flushGraphics(Rectangle region) {
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
53 if (inUse.isEmpty())
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
54 return;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
55
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
56 bool restoreCaret = false;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
57 Canvas canvas = null;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
58 if (auto canvas = cast(Canvas)control ) {
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
59 Caret caret = canvas.getCaret();
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
60 if (caret !is null)
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
61 restoreCaret = caret.isVisible();
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
62 if (restoreCaret)
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
63 caret.setVisible(false);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
64 }
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
65 /*
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
66 * The imageBuffer may be null if double-buffering was not successful.
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
67 */
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
68 if (imageBuffer !is null) {
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
69 imageGC.dispose();
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
70 controlGC.drawImage(getImage(),
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
71 0, 0, inUse.width, inUse.height,
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
72 inUse.x, inUse.y, inUse.width, inUse.height);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
73 imageBuffer.dispose();
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
74 imageBuffer = null;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
75 imageGC = null;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
76 }
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
77 controlGC.dispose();
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
78 controlGC = null;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
79
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
80 if (restoreCaret)
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
81 canvas.getCaret().setVisible(true);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
82 }
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
83
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
84 /**
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
85 * @see dwtx.draw2d.GraphicsSource#getGraphics(dwtx.draw2d.geometry.Rectangle)
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
86 */
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
87 public Graphics getGraphics(Rectangle region) {
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
88 if (control is null || control.isDisposed())
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
89 return null;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
90
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
91 dwt.graphics.Point.Point ptSWT = control.getSize();
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
92 inUse = new Rectangle(0, 0, ptSWT.x, ptSWT.y);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
93 inUse.intersect(region);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
94 if (inUse.isEmpty())
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
95 return null;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
96
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
97 /*
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
98 * Bugzilla 53632 - Attempts to create large images on some platforms will fail.
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
99 * When this happens, do not use double-buffering for painting.
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
100 */
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
101 try {
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
102 imageBuffer = new Image(null, inUse.width, inUse.height);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
103 } catch (DWTError noMoreHandles) {
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
104 imageBuffer = null;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
105 } catch (IllegalArgumentException tooBig) {
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
106 imageBuffer = null;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
107 }
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
108
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
109 controlGC = new GC(control,
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
110 control.getStyle() & (DWT.RIGHT_TO_LEFT | DWT.LEFT_TO_RIGHT));
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
111 Graphics graphics;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
112 if (imageBuffer !is null) {
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
113 imageGC = new GC(imageBuffer,
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
114 control.getStyle() & (DWT.RIGHT_TO_LEFT | DWT.LEFT_TO_RIGHT));
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
115 imageGC.setBackground(controlGC.getBackground());
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
116 imageGC.setForeground(controlGC.getForeground());
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
117 imageGC.setFont(controlGC.getFont());
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
118 imageGC.setLineStyle(controlGC.getLineStyle());
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
119 imageGC.setLineWidth(controlGC.getLineWidth());
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
120 imageGC.setXORMode(controlGC.getXORMode());
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
121 graphics = new SWTGraphics(imageGC);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
122 graphics.translate(inUse.getLocation().negate());
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
123 } else {
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
124 graphics = new SWTGraphics(controlGC);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
125 }
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
126
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
127 graphics.setClip(inUse);
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
128 return graphics;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
129 }
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
130
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
131 /**
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
132 * Returns the current image buffer or <code>null</code>.
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
133 * @since 2.1
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
134 * @return the current image buffer
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
135 */
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
136 protected Image getImage() {
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
137 return imageBuffer;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
138 }
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
139
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
140 /**
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
141 * Returns the current GC used on the buffer or <code>null</code>.
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
142 * @since 2.1
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
143 * @return the GC for the image buffer
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
144 */
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
145 protected GC getImageGC() {
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
146 return imageGC;
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
147 }
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
148
95307ad235d9 Added Draw2d code, still work in progress
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
149 }