1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
/*******************************************************************************
* Copyright (c) 2000, 2016 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.snippets;
/*
* SWT StyledText snippet: use gradient background.
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*
* @since 3.2
*/
import org.eclipse.swt.*;
import org.eclipse.swt.custom.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
public class Snippet218 {
static String text = "Plans do not materialize out of nowhere, nor are they entirely static. To ensure the planning process is " +
"transparent and open to the entire Eclipse community, we (the Eclipse PMC) post plans in an embryonic "+
"form and revise them throughout the release cycle. \n"+
"The first part of the plan deals with the important matters of release deliverables, release milestones, target "+
"operating environments, and release-to-release compatibility. These are all things that need to be clear for "+
"any release, even if no features were to change. \n";
static Image oldImage;
public static void main(String [] args) {
final Display display = new Display();
final Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
final StyledText styledText = new StyledText(shell, SWT.WRAP | SWT.BORDER);
styledText.setText(text);
FontData data = display.getSystemFont().getFontData()[0];
Font font = new Font(display, data.getName(), 16, SWT.BOLD);
styledText.setFont(font);
styledText.setForeground(display.getSystemColor (SWT.COLOR_BLUE));
styledText.addListener (SWT.Resize, event -> {
Rectangle rect = styledText.getClientArea ();
Image newImage = new Image (display, 1, Math.max (1, rect.height));
GC gc = new GC (newImage);
gc.setForeground (display.getSystemColor (SWT.COLOR_WHITE));
gc.setBackground (display.getSystemColor (SWT.COLOR_YELLOW));
gc.fillGradientRectangle (rect.x, rect.y, 1, rect.height, true);
gc.dispose ();
styledText.setBackgroundImage (newImage);
if (oldImage != null) oldImage.dispose ();
oldImage = newImage;
});
shell.setSize(700, 400);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
if (oldImage != null) oldImage.dispose ();
font.dispose();
display.dispose();
}
}
|
