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/*
* Jitsi, the OpenSource Java VoIP and Instant Messaging client.
*
* Distributable under LGPL license.
* See terms of license at gnu.org.
*/
package net.java.sip.communicator.plugin.desktoputil;
import java.awt.*;
import java.awt.image.*;
import java.beans.*;
import java.lang.reflect.*;
import javax.swing.*;
import net.java.sip.communicator.util.*;
import net.java.sip.communicator.util.skin.*;
import org.jitsi.util.*;
/**
* The SCScrollPane is a JScrollPane with a custom viewport that allows to
* set an image as a background. Depending on the
* "impl.gui.IS_CONTACT_LIST_TEXTURE_BG_ENABLED" property we'll be setting a
* single image or a texture of images.
*
* @author Yana Stamcheva
* @author Adam Netocny
*/
public class SIPCommScrollPane
extends JScrollPane
implements Skinnable
{
private static final long serialVersionUID = 0L;
/**
* Creates an <tt>SCSCrollPane</tt>.
*/
public SIPCommScrollPane()
{
this.setBorder(BorderFactory.createMatteBorder(
1, 0, 1, 0, Color.GRAY));
this.setViewport(new SCViewport());
this.getVerticalScrollBar().setUnitIncrement(100);
}
/**
* Sets the view of this JViewport.
*
* @param view the view to set.
*/
@Override
public void setViewportView(Component view)
{
if (view instanceof JComponent)
{
JComponent viewAsJComponent = (JComponent) view;
viewAsJComponent.setBorder(
BorderFactory.createEmptyBorder(3, 3, 3, 3));
viewAsJComponent.setOpaque(false);
}
super.setViewportView(view);
}
/**
* Reloads skin information in viewport.
*/
public void loadSkin()
{
((SCViewport) getViewport()).loadSkin();
}
/**
* The <tt>SCViewport</tt> used as viewport in this scrollpane.
*/
private static class SCViewport
extends JViewport
implements Skinnable
{
private static final long serialVersionUID = 1L;
private BufferedImage bgImage;
private Color color;
private TexturePaint texture;
/**
* Creates the <tt>SCViewport</tt>.
*/
public SCViewport()
{
this.setBackground(Color.WHITE);
loadSkin();
}
/**
* Returns the boolean value of the property given by <tt>key</tt>.
* @param key the key of the property we look for
* @return the boolean value of the searched property
*/
private boolean getSettingsBoolean(String key)
{
return
Boolean.parseBoolean(
DesktopUtilActivator.getResources().getSettingsString(key));
}
/**
* Paints this viewport.
* @param g the <tt>Graphics</tt> object used for painting
*/
@Override
public void paintComponent(Graphics g)
{
super.paintComponent(g);
g = g.create();
try
{
AntialiasingManager.activateAntialiasing(g);
Graphics2D g2 = (Graphics2D) g;
int width = getWidth();
int height = getHeight();
// paint the image
if (bgImage != null)
{
if (texture != null)
{
g2.setPaint(texture);
g2.fillRect(0, 0, width, height);
}
else
{
g.setColor(color);
// paint the background with the chosen color
g.fillRect(0, 0, width, height);
g2.drawImage(bgImage, width - bgImage.getWidth(),
height - bgImage.getHeight(), this);
}
}
}
finally
{
g.dispose();
}
}
/**
* Reloads background.
*/
public void loadSkin()
{
if(getSettingsBoolean("impl.gui.IS_CONTACT_LIST_IMG_BG_ENABLED"))
{
bgImage =
DesktopUtilActivator.getImage("service.gui.MAIN_WINDOW_BACKGROUND");
if (getSettingsBoolean(
"impl.gui.IS_CONTACT_LIST_TEXTURE_BG_ENABLED")
&& (bgImage != null))
{
texture =
new TexturePaint(bgImage, new Rectangle(0, 0, bgImage
.getWidth(null), bgImage.getHeight(null)));
color = null;
}
else
{
texture = null;
color =
new Color(DesktopUtilActivator.getResources().getColor(
"service.gui.CONTACT_LIST_BACKGROUND"));
}
}
else
{
bgImage = null;
texture = null;
color = null;
}
}
}
/**
* Releases the resources allocated by this instance throughout its lifetime
* and prepares it for garbage collection.
*/
public void dispose()
{
if(OSUtils.IS_MAC)
{
// Apple introduced a memory leak in JViewport class -
// they add a PropertyChangeListeners to the CToolkit
try
{
Toolkit defaultToolkit = Toolkit.getDefaultToolkit();
PropertyChangeListener[] pcl
= defaultToolkit.getPropertyChangeListeners(
"apple.awt.contentScaleFactor");
for(PropertyChangeListener pc : pcl)
{
// find the reference to the object created the listener
Field f = pc.getClass().getDeclaredField("this$0");
f.setAccessible(true);
// If we are the parent, clean up.
if(f.get(pc).equals(this.getViewport()))
{
defaultToolkit.removePropertyChangeListener(
"apple.awt.contentScaleFactor",
pc);
break;
}
}
}
catch(Throwable t)
{
if (t instanceof ThreadDeath)
throw (ThreadDeath) t;
}
}
}
}
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