org.eclipse.swt.snippets.Snippet46 source code

1 #!/usr/bin/env dub
2 /+
3 dub.sdl:
4     name "snippet46"
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, 2004 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.Snippet46;
49 
50 /*
51  * Composite example snippet: intercept mouse events (drag a button with the mouse)
52  *
53  * For a list of all SWT example snippets see
54  * http://www.eclipse.org/swt/snippets/
55  */
56 import org.eclipse.swt.SWT;
57 import org.eclipse.swt.graphics.Point;
58 import org.eclipse.swt.graphics.Rectangle;
59 import org.eclipse.swt.widgets.Button;
60 import org.eclipse.swt.widgets.Composite;
61 import org.eclipse.swt.widgets.Display;
62 import org.eclipse.swt.widgets.Event;
63 import org.eclipse.swt.widgets.Listener;
64 import org.eclipse.swt.widgets.Shell;
65 import org.eclipse.swt.layout.FillLayout;
66 
67 import java.lang.all;
68 
69 void main () {
70     Display display = new Display ();
71     Shell shell = new Shell (display);
72     Composite composite = new Composite (shell, SWT.NONE);
73     composite.setEnabled (false);
74     composite.setLayout (new FillLayout ());
75     Button button = new Button (composite, SWT.PUSH);
76     button.setText ("Button");
77     composite.pack ();
78     composite.setLocation (10, 10);
79     Point[1] offset;
80     Listener listener = new class Listener{
81         public void handleEvent (Event event) {
82             switch (event.type) {
83                 case SWT.MouseDown:
84                 Rectangle rect = composite.getBounds ();
85                 if (rect.contains (event.x, event.y)) {
86                     Point pt1 = composite.toDisplay (0, 0);
87                     Point pt2 = shell.toDisplay (event.x, event.y);
88                     offset [0] = new Point (pt2.x - pt1.x, pt2.y - pt1.y);
89                 }
90                 break;
91                 case SWT.MouseMove:
92                 if (offset [0] !is null) {
93                     Point pt = offset [0];
94                     composite.setLocation (event.x - pt.x, event.y - pt.y);
95                 }
96                 break;
97                 case SWT.MouseUp:
98                 offset [0] = null;
99                 break;
100                 default:
101             }
102         }
103     };
104     shell.addListener (SWT.MouseDown, listener);
105     shell.addListener (SWT.MouseUp, listener);
106     shell.addListener (SWT.MouseMove, listener);
107     shell.setSize (300, 300);
108     shell.open ();
109     while (!shell.isDisposed ()) {
110         if (!display.readAndDispatch ()) display.sleep ();
111     }
112     display.dispose ();
113 }
114