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comparison snippets/gc/Snippet207.d @ 78:4a04b6759f98

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Clean up directory names
author John Reimer <terminal.node@gmail.com>
date Sat, 10 May 2008 13:32:45 -0700
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children 1f0a7a472680
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76:04f122e90b0a 78:4a04b6759f98
1 /*******************************************************************************
2 * Copyright (c) 2000, 2005 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 * Port to the D programming language:
11 * Bill Baxter <bill@billbaxter.com>
12 *******************************************************************************/
13 module snippets.gc.Snippet207;
14
15 /*
16 * Use transformation matrices to reflect, rotate and shear images
17 *
18 * For a list of all SWT example snippets see
19 * http://www.eclipse.org/swt/snippets/
20 */
21 import dwt.DWT;
22 import dwt.events.PaintEvent;
23 import dwt.events.PaintListener;
24 import dwt.graphics.GC;
25 import dwt.graphics.Transform;
26 import dwt.graphics.Font;
27 import dwt.graphics.Rectangle;
28 import dwt.graphics.Image;
29 import dwt.layout.FillLayout;
30 import dwt.widgets.Display;
31 import dwt.widgets.Shell;
32 import dwt.widgets.Canvas;
33
34 import Math=tango.math.Math;
35
36 void main() {
37 Display display = new Display();
38
39 Image image = new Image(display, 110, 60);
40 GC gc = new GC(image);
41 Font font = new Font(display, "Times", 30., DWT.BOLD);
42 gc.setFont(font);
43 gc.setBackground(display.getSystemColor(DWT.COLOR_RED));
44 gc.fillRectangle(0, 0, 110, 60);
45 gc.setForeground(display.getSystemColor(DWT.COLOR_WHITE));
46 gc.drawText("DWT", 10, 10, true);
47 font.dispose();
48 gc.dispose();
49
50 Rectangle rect = image.getBounds();
51 Shell shell = new Shell(display);
52 shell.setText("Matrix Tranformations");
53 shell.setLayout(new FillLayout());
54 Canvas canvas = new Canvas(shell, DWT.DOUBLE_BUFFERED);
55 canvas.addPaintListener(new class() PaintListener {
56 public void paintControl(PaintEvent e) {
57 GC gc = e.gc;
58 gc.setAdvanced(true);
59 if (!gc.getAdvanced()){
60 gc.drawText("Advanced graphics not supported", 30, 30, true);
61 return;
62 }
63
64 // Original image
65 int x = 30, y = 30;
66 gc.drawImage(image, x, y);
67 x += rect.width + 30;
68
69 Transform transform = new Transform(display);
70
71 // Note that the tranform is applied to the whole GC therefore
72 // the coordinates need to be adjusted too.
73
74 // Reflect around the y axis.
75 transform.setElements(-1, 0, 0, 1, 0 ,0);
76 gc.setTransform(transform);
77 gc.drawImage(image, -1*x-rect.width, y);
78
79 x = 30; y += rect.height + 30;
80
81 // Reflect around the x axis.
82 transform.setElements(1, 0, 0, -1, 0, 0);
83 gc.setTransform(transform);
84 gc.drawImage(image, x, -1*y-rect.height);
85
86 x += rect.width + 30;
87
88 // Reflect around the x and y axes
89 transform.setElements(-1, 0, 0, -1, 0, 0);
90 gc.setTransform(transform);
91 gc.drawImage(image, -1*x-rect.width, -1*y-rect.height);
92
93 x = 30; y += rect.height + 30;
94
95 // Shear in the x-direction
96 transform.setElements(1, 0, -1, 1, 0, 0);
97 gc.setTransform(transform);
98 gc.drawImage(image, 300, y);
99
100 // Shear in y-direction
101 transform.setElements(1, -1, 0, 1, 0, 0);
102 gc.setTransform(transform);
103 gc.drawImage(image, 150, 475);
104
105 // Rotate by 45 degrees
106 float cos45 = Math.cos(45);
107 float sin45 = Math.sin(45);
108 transform.setElements(cos45, sin45, -sin45, cos45, 0, 0);
109 gc.setTransform(transform);
110 gc.drawImage(image, 350, 100);
111
112 transform.dispose();
113 }
114 });
115
116 shell.setSize(350, 550);
117 shell.open();
118 while (!shell.isDisposed()) {
119 if (!display.readAndDispatch())
120 display.sleep();
121 }
122 image.dispose();
123 display.dispose();
124 }
125
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