src/net/java/sip/communicator/util/swing/transparent/TransparentFrame.java


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
70
71
72
73
74
75
76
77
78
79
80
81
82

/*
 * SIP Communicator, the OpenSource Java VoIP and Instant Messaging client.
 *
 * Distributable under LGPL license.
 * See terms of license at gnu.org.
 */
package net.java.sip.communicator.util.swing.transparent;

import java.awt.*;

import javax.swing.*;

/**
 *
 * @author Yana Stamcheva
 */
public class TransparentFrame
    extends JFrame
    implements RootPaneContainer
{
    /**
     * Indicates if the transparency is supported from the current graphics
     * environment.
     */
    public static boolean isTranslucencySupported;

    /**
     * Creates a transparent undecorated frame. If the transparency is not
     * supported creates a normal undecorated frame.
     *
     * @return the created frame
     */
    public static TransparentFrame createTransparentFrame()
    {
        isTranslucencySupported
            = AWTUtilitiesWrapper.isTranslucencySupported(
                AWTUtilitiesWrapper.PERPIXEL_TRANSLUCENT);

        GraphicsConfiguration translucencyCapableGC
            = GraphicsEnvironment.getLocalGraphicsEnvironment()
                .getDefaultScreenDevice().getDefaultConfiguration();

        if (!AWTUtilitiesWrapper.isTranslucencyCapable(translucencyCapableGC))
        {
            translucencyCapableGC = null;

            GraphicsEnvironment env
                = GraphicsEnvironment.getLocalGraphicsEnvironment();
            GraphicsDevice[] devices = env.getScreenDevices();

            for (int i = 0; i < devices.length
                            && translucencyCapableGC == null; i++)
            {
                GraphicsConfiguration[] configs = devices[i].getConfigurations();
                for (int j = 0; j < configs.length
                                && translucencyCapableGC == null; j++)
                {
                    if (AWTUtilitiesWrapper.isTranslucencyCapable(configs[j]))
                    {
                        translucencyCapableGC = configs[j];
                    }
                }
            }
            if (translucencyCapableGC == null)
            {
                isTranslucencySupported = false;
            }
        }

        return new TransparentFrame(translucencyCapableGC);
    }

    /** Creates new form FancyFrame */
    private TransparentFrame(GraphicsConfiguration gc)
    {
        super(gc);

        setUndecorated(true);
        AWTUtilitiesWrapper.setWindowOpaque(this, false);
        AWTUtilitiesWrapper.setWindowOpacity(this, 1f);
    }
}