org.eclipse.swt.snippets.Snippet214 source code

1 #!/usr/bin/env dub
2 /+
3 dub.sdl:
4     name "snippet214"
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.Snippet214;
49 
50 /*
51  * Control example snippet: set a background image (a dynamic gradient)
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 
60 import org.eclipse.swt.graphics.GC;
61 import org.eclipse.swt.graphics.Image;
62 import org.eclipse.swt.graphics.Rectangle;
63 import org.eclipse.swt.layout.FillLayout;
64 import org.eclipse.swt.layout.RowLayout;
65 import org.eclipse.swt.widgets.Button;
66 import org.eclipse.swt.widgets.Display;
67 import org.eclipse.swt.widgets.Event;
68 import org.eclipse.swt.widgets.Group;
69 import org.eclipse.swt.widgets.Listener;
70 import org.eclipse.swt.widgets.Shell;
71 import org.eclipse.swt.layout.RowLayout;
72 
73 import java.lang.all;
74 
75 version(Tango){
76     import tango.util.Convert;
77 } else { // Phobos
78     import std.conv;
79 }
80 
81 void main(String [] args) {
82     Image oldImage;
83     
84     Display display = new Display ();
85     Shell shell = new Shell (display);
86     shell.setBackgroundMode (SWT.INHERIT_DEFAULT);
87     FillLayout layout1 = new FillLayout (SWT.VERTICAL);
88     layout1.marginWidth = layout1.marginHeight = 10;
89     shell.setLayout (layout1);
90     Group group = new Group (shell, SWT.NONE);
91     group.setText ("Group ");
92     RowLayout layout2 = new RowLayout (SWT.VERTICAL);
93     layout2.marginWidth = layout2.marginHeight = layout2.spacing = 10;
94     group.setLayout (layout2);
95     for (int i=0; i<8; i++) {
96         Button button = new Button (group, SWT.RADIO);
97         button.setText ("Button " ~ to!(String)(i));
98     }
99     shell.addListener (SWT.Resize, new class Listener {
100        public void handleEvent (Event event) {
101            Rectangle rect = shell.getClientArea ();
102            Image newImage = new Image (display, Math.max (1, rect.width), 1);
103            GC gc = new GC (newImage);
104            gc.setForeground (display.getSystemColor (SWT.COLOR_WHITE));
105            gc.setBackground (display.getSystemColor (SWT.COLOR_BLUE));
106            gc.fillGradientRectangle (rect.x, rect.y, rect.width, 1, false);
107            gc.dispose ();
108            shell.setBackgroundImage (newImage);
109            if (oldImage !is null) oldImage.dispose ();
110            oldImage = newImage;
111        }
112     });
113     shell.pack ();
114     shell.open ();
115     while (!shell.isDisposed ()) {
116         if (!display.readAndDispatch ()) display.sleep ();
117     }
118     if (oldImage !is null) oldImage.dispose ();
119     display.dispose ();
120 }
121