j2semutableimage.java

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/*
 * MicroEmulator 
 * Copyright (C) 2001 Bartek Teodorczyk <[e-mail]>
 * 
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation; either version 2.1 of the License, or (at your
 * option) any later version.
 * 
 * This library 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 Lesser General Public License
 * for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

package com.barteo.emulator.device.j2se;

import java.awt.Frame;
import java.awt.image.PixelGrabber;

import com.barteo.emulator.device.MutableImage;

public class J2SEMutableImage extends MutableImage 
{
	private java.awt.Image img;
	private Frame f = new Frame();
	private J2SEDisplayGraphics displayGraphics = null;
	private PixelGrabber grabber = null;
	private int[] pixels;

	
	public J2SEMutableImage(int width, int height) 
	{
		f.addNotify();
		img = f.createImage(width, height);
	}

	
	public javax.microedition.lcdui.Graphics getGraphics() 
	{
		if (displayGraphics == null) {
			displayGraphics = new J2SEDisplayGraphics(img.getGraphics(), this);
			displayGraphics.setGrayScale(255);
			displayGraphics.fillRect(0, 0, getWidth(), getHeight());
			displayGraphics.setGrayScale(0);
		}
		return displayGraphics;
	}

	
	public boolean isMutable() 
	{
		return true;
	}

	
	public int getHeight() 
	{
		return img.getHeight(null);
	}

	
	public java.awt.Image getImage() 
	{
		return img;
	}

	
	public int getWidth() 
	{
		return img.getWidth(null);
	}

	
	public int[] getData() 
	{
		if (grabber == null) {
			pixels = new int[getWidth() * getHeight()];
			grabber = new PixelGrabber(img, 0, 0, getWidth(), getHeight(), pixels, 0, getWidth());
		} 

		try {
			grabber.grabPixels();
		} catch (InterruptedException e) {
			e.printStackTrace();
		}

		return pixels;
	}

}