/*
* JMule - Java file sharing client
* Copyright (C) 2007-2008 JMule team ( jmule@jmule.org / http://jmule.org )
*
* Any parts of this program derived from other projects, or contributed
* by third-party developers are copyrighted by their respective authors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
package org.jmule.ui.swing.common;
/**
* @author gregork
* @author javajox
* @see http://phex.svn.sourceforge.net/viewvc/phex/phex/trunk/src/main/java/phex/gui/common/GradientPanel.java?view=log
* @see phex.gui.common.GradientPanel
* @version $$Revision: 1.2 $$
* Last changed by $$Author: javajox $$ on $$Date: 2008/10/18 12:30:19 $$
*/
import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.Paint;
import java.awt.Rectangle;
import javax.swing.JFrame;
import javax.swing.JPanel;
/**
*
*/
public class GradientPanel extends JPanel
{
protected Color fromColor;
protected Color toColor;
/**
*
*/
public GradientPanel( Color fromColor, Color toColor )
{
super( );
this.fromColor = fromColor;
this.toColor = toColor;
}
/* These rectangles/insets are allocated once for all
* paintComponent() calls. Re-using rectangles rather than
* allocating them in each paint call substantially reduced the time
* it took paint to run. Obviously, this method can't be re-entered.
*/
private static Rectangle viewRect = new Rectangle();
private static Rectangle textRect = new Rectangle();
private static Rectangle iconRect = new Rectangle();
protected void paintComponent( Graphics g )
{
// paint background.
g.setColor( getBackground() );
g.fillRect( 0, 0, getWidth(), getHeight() );
Insets i = getInsets();
viewRect.x = i.left;
viewRect.y = i.top;
viewRect.width = getWidth() - (i.right + viewRect.x);
viewRect.height = getHeight() - (i.bottom + viewRect.y);
// paint gradient
Graphics2D g2 = (Graphics2D)g;
Paint gradient = new GradientPaint(
0, 0, fromColor,
viewRect.width, viewRect.height, toColor );
g2.setPaint( gradient );
g2.fillRect( viewRect.x, viewRect.y,
viewRect.width, viewRect.height );
}
}