org.eclipse.swt.snippets.Snippet21 source code

1 #!/usr/bin/env dub
2 /+
3 dub.sdl:
4     name "snippet21"
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  *     Bill Baxter <wbaxter> at gmail com
47  *******************************************************************************/
48 module org.eclipse.swt.snippets.Snippet21;
49 
50 /*
51  * Canvas example snippet: implement tab traversal (behave like a tab group)
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.Color;
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 import org.eclipse.swt.widgets.Button;
63 import org.eclipse.swt.widgets.Text;
64 import org.eclipse.swt.widgets.Canvas;
65 
66 version(Tango){
67     import tango.io.Stdout;
68     void writeln(in char[] line) {
69         Stdout(line)("\n").flush();
70     }
71 } else { // Phobos
72     import std.stdio;
73 }
74 
75 import java.lang.all;
76 
77 void main () {
78 	Display display = new Display ();
79 	Color red = display.getSystemColor (SWT.COLOR_RED);
80 	Color blue = display.getSystemColor (SWT.COLOR_BLUE);
81 	Shell shell = new Shell (display);
82 	Button b = new Button (shell, SWT.PUSH);
83 	b.setBounds (10, 10, 100, 32);
84 	b.setText ("Button");
85 	shell.setDefaultButton (b);
86 	Canvas c = new Canvas (shell, SWT.BORDER);
87 	c.setBounds (10, 50, 100, 32);
88 
89     void onTraverse(Event e, Canvas c) {
90         switch (e.detail) {
91             /* Do tab group traversal */
92         case SWT.TRAVERSE_ESCAPE:
93         case SWT.TRAVERSE_RETURN:
94         case SWT.TRAVERSE_TAB_NEXT:	
95         case SWT.TRAVERSE_TAB_PREVIOUS:
96         case SWT.TRAVERSE_PAGE_NEXT:	
97         case SWT.TRAVERSE_PAGE_PREVIOUS:
98             e.doit = true;
99             break;
100         default:
101             break;
102         }
103     }
104 
105     void onFocusIn(Event e, Canvas c) {
106         c.setBackground (red);
107     }
108 
109     void onFocusOut(Event e, Canvas c) {
110         c.setBackground (blue);
111     }
112 
113     void onKeyDown (Event e, Canvas c) {
114         writeln("KEY");
115         for (int i=0; i<64; i++) {
116             Color c1 = red, c2 = blue;
117             if (c.isFocusControl ()) {
118                 c1 = blue;  c2 = red;
119             }
120             c.setBackground (c1);
121             c.update ();
122             c.setBackground (c2);
123         }
124     }
125 
126 	c.addListener (SWT.Traverse, dgListener(&onTraverse, c));
127 	c.addListener (SWT.FocusIn, dgListener(&onFocusIn, c));
128 	c.addListener (SWT.FocusOut, dgListener(&onFocusOut, c));
129 	c.addListener (SWT.KeyDown, dgListener(&onKeyDown, c));
130 
131 	Text t = new Text (shell, SWT.SINGLE | SWT.BORDER);
132 	t.setBounds (10, 85, 100, 32);
133 
134 	Text r = new Text (shell, SWT.MULTI | SWT.BORDER);
135 	r.setBounds (10, 120, 100, 32);
136 	
137 	c.setFocus ();
138 	shell.setSize (200, 200);
139 	shell.open ();
140 	while (!shell.isDisposed()) {
141 		if (!display.readAndDispatch ()) display.sleep ();
142 	}
143 	display.dispose ();
144 }