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comparison snippets/color/Snippet208.d @ 117:8cdaac0dc743

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Added more snippets from TomD
author Frank Benoit <benoit@tionex.de>
date Sat, 12 Jul 2008 20:09:06 +0200
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116:f53c6274734f 117:8cdaac0dc743
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 * D Port:
11 * Thomas Demmer <t_demmer AT web DOT de>
12 *******************************************************************************/
13 module color.Snippet208;
14
15 /*
16 * Change hue, saturation and brightness of a color
17 *
18 * For a list of all SWT example snippets see
19 * http://www.eclipse.org/swt/snippets/
20 *
21 * @since 3.2
22 */
23 import dwt.DWT;
24 import dwt.graphics.Image;
25 import dwt.graphics.ImageData;
26 import dwt.graphics.RGB;
27 import dwt.graphics.PaletteData;
28 import dwt.layout.GridData;
29 import dwt.layout.GridLayout;
30 import dwt.widgets.Display;
31 import dwt.widgets.Label;
32 import dwt.widgets.Shell;
33
34 import dwt.dwthelper.utils;
35
36 void main (String [] args) {
37 PaletteData palette = new PaletteData(0xff, 0xff00, 0xff0000);
38
39 // ImageData showing variations of hue
40 ImageData hueData = new ImageData(360, 100, 24, palette);
41 float hue = 0;
42 for (int x = 0; x < hueData.width; x++) {
43 for (int y = 0; y < hueData.height; y++) {
44 int pixel = palette.getPixel(new RGB(hue, 1f, 1f));
45 hueData.setPixel(x, y, pixel);
46 }
47 hue += 360f / hueData.width;
48 }
49
50 // ImageData showing saturation on x axis and brightness on y axis
51 ImageData saturationBrightnessData = new ImageData(360, 360, 24, palette);
52 float saturation = 0f;
53 float brightness = 1f;
54 for (int x = 0; x < saturationBrightnessData.width; x++) {
55 brightness = 1f;
56 for (int y = 0; y < saturationBrightnessData.height; y++) {
57 int pixel = palette.getPixel(new RGB(360f, saturation, brightness));
58 saturationBrightnessData.setPixel(x, y, pixel);
59 brightness -= 1f / saturationBrightnessData.height;
60 }
61 saturation += 1f / saturationBrightnessData.width;
62 }
63
64 Display display = new Display();
65 Image hueImage = new Image(display, hueData);
66 Image saturationImage = new Image(display, saturationBrightnessData);
67 Shell shell = new Shell(display);
68 shell.setText("Hue, Saturation, Brightness");
69 GridLayout gridLayout = new GridLayout(2, false);
70 gridLayout.verticalSpacing = 10;
71 gridLayout.marginWidth = gridLayout.marginHeight = 16;
72 shell.setLayout(gridLayout);
73
74 Label label = new Label(shell, DWT.CENTER);
75 label.setImage(hueImage);
76 GridData data = new GridData(DWT.RIGHT, DWT.CENTER, false, false, 2, 1);
77 label.setLayoutData(data);
78
79 label = new Label(shell, DWT.CENTER); //spacer
80 label = new Label(shell, DWT.CENTER);
81 label.setText("Hue");
82 data = new GridData(DWT.CENTER, DWT.CENTER, false, false);
83 label.setLayoutData(data);
84 label = new Label(shell, DWT.CENTER); //spacer
85 data = new GridData(DWT.CENTER, DWT.CENTER, false, false, 2, 1);
86 label.setLayoutData(data);
87
88 label = new Label(shell, DWT.LEFT);
89 label.setText("Brightness");
90 data = new GridData(DWT.LEFT, DWT.CENTER, false, false);
91 label.setLayoutData(data);
92
93 label = new Label(shell, DWT.CENTER);
94 label.setImage(saturationImage);
95 data = new GridData(DWT.CENTER, DWT.CENTER, false, false);
96 label.setLayoutData (data);
97
98 label = new Label(shell, DWT.CENTER); //spacer
99 label = new Label(shell, DWT.CENTER);
100 label.setText("Saturation");
101 data = new GridData(DWT.CENTER, DWT.CENTER, false, false);
102 label.setLayoutData(data);
103
104 shell.pack();
105 shell.open();
106 while (!shell.isDisposed()) {
107 if (!display.readAndDispatch()) {
108 display.sleep();
109 }
110 }
111 hueImage.dispose();
112 saturationImage.dispose();
113 display.dispose();
114 }