org.eclipse.swt.snippets.Snippet218 source code

1 #!/usr/bin/env dub
2 /+
3 dub.sdl:
4     name "snippet218"
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  *     yidabu at gmail dot com  ( D China http://www.d-programming-language-china.org/ )
47  *******************************************************************************/
48 
49 module org.eclipse.swt.snippets.Snippet218;
50 /*
51  * SWT StyledText snippet: use gradient background.
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 
59 import org.eclipse.swt.SWT;
60 import org.eclipse.swt.custom.StyledText;
61 import org.eclipse.swt.custom.StyleRange;
62 import org.eclipse.swt.layout.FillLayout;
63 import org.eclipse.swt.widgets.Display;
64 import org.eclipse.swt.widgets.Shell;
65 import org.eclipse.swt.widgets.Event;
66 import org.eclipse.swt.widgets.Listener;
67 import org.eclipse.swt.graphics.FontData;
68 import org.eclipse.swt.graphics.Font;
69 import org.eclipse.swt.graphics.Rectangle;
70 import org.eclipse.swt.graphics.GC;
71 import org.eclipse.swt.graphics.Image;
72 
73 import java.lang.all;
74 
75 version(Tango){
76     import Math = tango.math.Math;
77 } else { // Phobos
78     import Math = std.algorithm;
79 }
80 
81 version(JIVE){
82     import jive.stacktrace;
83 }
84 
85 void main() {
86     static String text = "Plans do not materialize out of nowhere, nor are they entirely static. To ensure the planning process is " ~
87         "transparent and open to the entire Eclipse community, we (the Eclipse PMC) post plans in an embryonic " ~
88         "form and revise them throughout the release cycle. \n" ~
89         "The first part of the plan deals with the important matters of release deliverables, release milestones, target " ~
90         "operating environments, and release-to-release compatibility. These are all things that need to be clear for " ~
91         "any release, even if no features were to change.  \n";
92     static Image oldImage;
93 
94 
95     Display display = new Display();
96     Shell shell = new Shell(display);
97     shell.setLayout(new FillLayout());
98     StyledText styledText = new StyledText(shell, SWT.WRAP | SWT.BORDER);
99     styledText.setText(text);
100     FontData data = display.getSystemFont().getFontData()[0];
101     Font font = new Font(display, data.getName(), 16f, SWT.BOLD);
102     styledText.setFont(font);
103     styledText.setForeground(display.getSystemColor (SWT.COLOR_BLUE));
104 
105     void onResize (Event event) {
106         Rectangle rect = styledText.getClientArea ();
107         Image newImage = new Image (display, 1, Math.max (1, rect.height));
108         GC gc = new GC (newImage);
109         gc.setForeground (display.getSystemColor (SWT.COLOR_WHITE));
110         gc.setBackground (display.getSystemColor (SWT.COLOR_YELLOW));
111         gc.fillGradientRectangle (rect.x, rect.y, 1, rect.height, true);
112         gc.dispose ();
113         styledText.setBackgroundImage (newImage);
114         if (oldImage !is null) oldImage.dispose ();
115         oldImage = newImage;
116     }
117 
118     styledText.addListener (SWT.Resize, dgListener(&onResize));
119 
120     shell.setSize(700, 400);
121     shell.open();
122     while (!shell.isDisposed()) {
123         if (!display.readAndDispatch())
124             display.sleep();
125     }
126     if (oldImage !is null) oldImage.dispose ();
127     font.dispose();
128     display.dispose();
129 }