source: trunk/src/org/expeditee/gio/swing/ExpediteeRepaintManager.java@ 1097

/**
 *    ExpediteeRepaintManager.java
 *    Copyright (C) 2010 New Zealand Digital Library, http://expeditee.org
 *
 *    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 3 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, see <http://www.gnu.org/licenses/>.
 */

package org.expeditee.gio.swing;

import java.awt.Component;
import java.awt.Point;
import java.awt.Rectangle;

import javax.swing.JComponent;
import javax.swing.RepaintManager;

import org.expeditee.gui.Browser;
import org.expeditee.gui.DisplayController;

public class ExpediteeRepaintManager extends RepaintManager {
        
        private static ExpediteeRepaintManager _instance = null;
        
        public static ExpediteeRepaintManager getInstance()
        {
                if (_instance == null) _instance = new ExpediteeRepaintManager();
                
                return _instance;
        }
        
        private ExpediteeRepaintManager()
        {
                super();
                setDoubleBufferingEnabled(false); // use as few resources as possible
        }
        
        
    public synchronized void addDirtyRegion(JComponent c, int x, int y, int w, int h)
    {
        if (c != null) {
                
                if (Browser._theBrowser == null || c == SwingMiscManager.getIfUsingSwingGraphicsManager().getContentPane()) return;

                Rectangle dirty = new Rectangle();
                convertRectangleOrigin(c, new Rectangle(x, y, w, h), dirty);
                        DisplayController.invalidateArea(SwingConversions.fromSwingRectangle(dirty));
                        DisplayController.requestRefresh(true); // ALWAYS REQUEST: Avoids AWT locks
                
        /*      if (convertRectangleOrigin(c, new Rectangle(x, y, w, h), dirty)) {
                        FrameGraphics.invalidateArea(dirty);
                        FrameGraphics.refresh(true);
                } else {
                        FrameGraphics.invalidateArea(dirty);
                        FrameGraphics.requestRefresh(true);
                }*/

                // DEBUGGING
                //Browser._theBrowser.g.setColor(Color.ORANGE);
                //Browser._theBrowser.g.fillRect(dirty.x, dirty.y, dirty.width, dirty.height);
                
        }
    }
    
        /*@Override
        public void addDirtyRegion(Applet applet, int x, int y, int w, int h) {
                // Ignore
        }

        @Override
        public void addDirtyRegion(Window window, int x, int y, int w, int h) {
                // Ignore
        }*/
    
    /**
     * Converts a rectangle from swing/awt space to expeditee space
     * @param c
     * @param dirty
     * @return
     */
    private boolean convertRectangleOrigin(JComponent c, Rectangle dirty, Rectangle dest)
    {
        Point p = new Point(0,0);
        boolean isInContentPane = getPointInContentPane(c, p);
        dest.setBounds(dirty);
        dest.translate(p.x, p.y);
        return isInContentPane;
    }
    
    private boolean getPointInContentPane(Component c, Point p)
    {
        if (c == SwingMiscManager.getIfUsingSwingGraphicsManager().getContentPane()) {
                return true;
        } else if (c == null || c == SwingMiscManager.getIfUsingSwingGraphicsManager().getLayeredPane()) {
                return false;
        }

        p.translate(c.getX(), c.getY());
        
        return getPointInContentPane(c.getParent(), p);
    }
    



}