org.eclipse.swt.snippets.Snippet208 source code

1 #!/usr/bin/env dub
2 /+
3 dub.sdl:
4     name "snippet208"
5     dependency "dwt" path="../../../../../../"
6     libs \
7       "atk-1.0" \
8       "cairo" \
9       "dl" \
10       "fontconfig" \
11       "gdk-x11-2.0" \
12       "gdk_pixbuf-2.0" \
13       "glib-2.0" \
14       "gmodule-2.0" \
15       "gnomeui-2" \
16       "gnomevfs-2" \
17       "gobject-2.0" \
18       "gthread-2.0" \
19       "gtk-x11-2.0" \
20       "pango-1.0" \
21       "pangocairo-1.0" \
22       "X11" \
23       "Xcomposite" \
24       "Xcursor" \
25       "Xdamage" \
26       "Xext" \
27       "Xfixes" \
28       "Xi" \
29       "Xinerama" \
30       "Xrandr" \
31       "Xrender" \
32       "Xtst" \
33       platform="linux"
34 +/
35 
36 /*******************************************************************************
37  * Copyright (c) 2000, 2005 IBM Corporation and others.
38  * All rights reserved. This program and the accompanying materials
39  * are made available under the terms of the Eclipse Public License v1.0
40  * which accompanies this distribution, and is available at
41  * http://www.eclipse.org/legal/epl-v10.html
42  *
43  * Contributors:
44  *     IBM Corporation - initial API and implementation
45  * D Port:
46  *     Thomas Demmer <t_demmer AT web DOT de>
47  *******************************************************************************/
48 module org.eclipse.swt.snippets.Snippet208;
49 
50 /*
51  * Change hue, saturation and brightness of a color
52  *
53  * For a list of all SWT example snippets see
54  * http://www.eclipse.org/swt/snippets/
55  *
56  * @since 3.2
57  */
58 import org.eclipse.swt.SWT;
59 import org.eclipse.swt.graphics.Image;
60 import org.eclipse.swt.graphics.ImageData;
61 import org.eclipse.swt.graphics.RGB;
62 import org.eclipse.swt.graphics.PaletteData;
63 import org.eclipse.swt.layout.GridData;
64 import org.eclipse.swt.layout.GridLayout;
65 import org.eclipse.swt.widgets.Display;
66 import org.eclipse.swt.widgets.Label;
67 import org.eclipse.swt.widgets.Shell;
68 
69 import java.lang.all;
70 
71 void main () {
72     PaletteData palette = new PaletteData(0xff, 0xff00, 0xff0000);
73 
74     // ImageData showing variations of hue
75     ImageData hueData = new ImageData(360, 100, 24, palette);
76     float hue = 0;
77     for (int x = 0; x < hueData.width; x++) {
78         for (int y = 0; y < hueData.height; y++) {
79             int pixel = palette.getPixel(new RGB(hue, 1f, 1f));
80             hueData.setPixel(x, y, pixel);
81         }
82         hue += 360f / hueData.width;
83     }
84 
85     // ImageData showing saturation on x axis and brightness on y axis
86     ImageData saturationBrightnessData = new ImageData(360, 360, 24, palette);
87     float saturation = 0f;
88     float brightness = 1f;
89     for (int x = 0; x < saturationBrightnessData.width; x++) {
90         brightness = 1f;
91         for (int y = 0; y < saturationBrightnessData.height; y++) {
92             int pixel = palette.getPixel(new RGB(360f, saturation, brightness));
93             saturationBrightnessData.setPixel(x, y, pixel);
94             brightness -= 1f / saturationBrightnessData.height;
95         }
96         saturation += 1f / saturationBrightnessData.width;
97     }
98 
99     Display display = new Display();
100     Image hueImage = new Image(display, hueData);
101     Image saturationImage = new Image(display, saturationBrightnessData);
102     Shell shell = new Shell(display);
103     shell.setText("Hue, Saturation, Brightness");
104     GridLayout gridLayout = new GridLayout(2, false);
105     gridLayout.verticalSpacing = 10;
106     gridLayout.marginWidth = gridLayout.marginHeight = 16;
107     shell.setLayout(gridLayout);
108 
109     Label label = new Label(shell, SWT.CENTER);
110     label.setImage(hueImage);
111     GridData data = new GridData(SWT.RIGHT, SWT.CENTER, false, false, 2, 1);
112     label.setLayoutData(data);
113 
114     label = new Label(shell, SWT.CENTER); //spacer
115     label = new Label(shell, SWT.CENTER);
116     label.setText("Hue");
117     data = new GridData(SWT.CENTER, SWT.CENTER, false, false);
118     label.setLayoutData(data);
119     label = new Label(shell, SWT.CENTER); //spacer
120     data = new GridData(SWT.CENTER, SWT.CENTER, false, false, 2, 1);
121     label.setLayoutData(data);
122 
123     label = new Label(shell, SWT.LEFT);
124     label.setText("Brightness");
125     data = new GridData(SWT.LEFT, SWT.CENTER, false, false);
126     label.setLayoutData(data);
127 
128     label = new Label(shell, SWT.CENTER);
129     label.setImage(saturationImage);
130     data = new GridData(SWT.CENTER, SWT.CENTER, false, false);
131     label.setLayoutData (data);
132 
133     label = new Label(shell, SWT.CENTER); //spacer
134     label = new Label(shell, SWT.CENTER);
135     label.setText("Saturation");
136     data = new GridData(SWT.CENTER, SWT.CENTER, false, false);
137     label.setLayoutData(data);
138 
139     shell.pack();
140     shell.open();
141     while (!shell.isDisposed()) {
142         if (!display.readAndDispatch()) {
143             display.sleep();
144         }
145     }
146     hueImage.dispose();
147     saturationImage.dispose();
148     display.dispose();
149 }