org.eclipse.swt.snippets.Snippet66 source code

1 #!/usr/bin/env dub
2 /+
3 dub.sdl:
4     name "snippet66"
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  * Port to the D programming language:
46  *     Bill Baxter <bill@billbaxter.com>
47  *******************************************************************************/
48 module org.eclipse.swt.snippets.Snippet66;
49 
50 /*
51  * GC example snippet: implement a simple scribble program
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.GC;
58 import org.eclipse.swt.widgets.Display;
59 import org.eclipse.swt.widgets.Shell;
60 import org.eclipse.swt.widgets.Listener;
61 import org.eclipse.swt.widgets.Event;
62 
63 void main () {
64     Display display = new Display ();
65     Shell shell = new Shell (display);
66     Listener listener = new class Listener {
67         int lastX = 0, lastY = 0;
68         public void handleEvent (Event event) {
69             switch (event.type) {
70             case SWT.MouseMove:
71                 if ((event.stateMask & SWT.BUTTON1) == 0) break;
72                 GC gc = new GC (shell);
73                 gc.drawLine (lastX, lastY, event.x, event.y);
74                 gc.dispose ();
75                 goto case SWT.MouseDown;
76             case SWT.MouseDown:
77                 lastX = event.x;
78                 lastY = event.y;
79                 break;
80             default:
81             }
82         }
83     };
84     shell.addListener (SWT.MouseDown, listener);
85     shell.addListener (SWT.MouseMove, listener);
86     shell.open ();
87     while (!shell.isDisposed ()) {
88         if (!display.readAndDispatch ()) display.sleep ();
89     }
90     display.dispose ();
91 }
92