org.microemu.device.j2se.J2SEImmutableImage Maven / Gradle / Ivy
/*
* MicroEmulator
* Copyright (C) 2001 Bartek Teodorczyk
*
* It is licensed under the following two licenses as alternatives:
* 1. GNU Lesser General Public License (the "LGPL") version 2.1 or any newer version
* 2. Apache License (the "AL") Version 2.0
*
* You may not use this file except in compliance with at least one of
* the above two licenses.
*
* You may obtain a copy of the LGPL at
* http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
*
* You may obtain a copy of the AL at
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the LGPL or the AL for the specific language governing permissions and
* limitations.
*
* Contributor(s):
* Andres Navarro
*/
package org.microemu.device.j2se;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.image.ImageObserver;
import org.microemu.log.Logger;
public class J2SEImmutableImage extends javax.microedition.lcdui.Image {
private Image img;
private int width;
private int height;
public J2SEImmutableImage(Image image) {
this.img = image;
this.width = -1;
this.height = -1;
}
public J2SEImmutableImage(J2SEMutableImage image) {
img = Toolkit.getDefaultToolkit().createImage(image.getImage().getSource());
this.width = -1;
this.height = -1;
}
public int getHeight() {
if (height == -1) {
ImageObserver observer = new ImageObserver() {
public boolean imageUpdate(Image img, int infoflags, int x, int y, int width, int height) {
if ((infoflags & ImageObserver.WIDTH) != 0) {
J2SEImmutableImage.this.width = width;
}
if ((infoflags & ImageObserver.HEIGHT) != 0) {
synchronized (this) {
J2SEImmutableImage.this.height = height;
this.notify();
}
return false;
}
return true;
}
};
synchronized (observer) {
// Fix for http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4905411 (Java < 1.5)
try {
height = img.getHeight(observer);
} catch (NullPointerException ex) {
}
if (height == -1) {
try {
observer.wait();
} catch (InterruptedException ex) {
}
}
}
}
return height;
}
public Image getImage() {
return img;
}
public int getWidth() {
if (width == -1) {
ImageObserver observer = new ImageObserver() {
public boolean imageUpdate(Image img, int infoflags, int x, int y, int width, int height) {
if ((infoflags & ImageObserver.HEIGHT) != 0) {
J2SEImmutableImage.this.height = height;
}
if ((infoflags & ImageObserver.WIDTH) != 0) {
synchronized (this) {
J2SEImmutableImage.this.width = width;
this.notify();
}
return false;
}
return true;
}
};
synchronized (observer) {
// Fix for http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4905411 (Java < 1.5)
try {
width = img.getWidth(observer);
} catch (NullPointerException ex) {
}
if (width == -1) {
try {
observer.wait();
} catch (InterruptedException ex) {
}
}
}
}
return width;
}
public void getRGB(int[] argb, int offset, int scanlength, int x, int y, int width, int height) {
if (width <= 0 || height <= 0)
return;
if (x < 0 || y < 0 || x + width > getWidth() || y + height > getHeight())
throw new IllegalArgumentException("Specified area exceeds bounds of image");
if ((scanlength < 0 ? -scanlength : scanlength) < width)
throw new IllegalArgumentException("abs value of scanlength is less than width");
if (argb == null)
throw new NullPointerException("null rgbData");
if (offset < 0 || offset + width > argb.length)
throw new ArrayIndexOutOfBoundsException();
if (scanlength < 0) {
if (offset + scanlength * (height - 1) < 0)
throw new ArrayIndexOutOfBoundsException();
} else {
if (offset + scanlength * (height - 1) + width > argb.length)
throw new ArrayIndexOutOfBoundsException();
}
try {
(new java.awt.image.PixelGrabber(img, x, y, width, height, argb, offset, scanlength)).grabPixels();
} catch (InterruptedException e) {
Logger.error(e);
}
}
}