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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License 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 License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @author Igor V. Stolyarov
* @version $Revision$
*/
package java.awt.image.renderable;
import java.awt.image.ColorModel;
import java.awt.image.ImageConsumer;
import java.awt.image.ImageProducer;
import java.awt.image.Raster;
import java.awt.image.RenderedImage;
import java.util.Vector;
/**
* The Class RenderableImageProducer provides the implementation for the image
* rendering.
*
* @since Android 1.0
*/
public class RenderableImageProducer implements ImageProducer, Runnable {
/**
* The rbl.
*/
RenderableImage rbl;
/**
* The rc.
*/
RenderContext rc;
/**
* The consumers.
*/
Vector<ImageConsumer> consumers = new Vector<ImageConsumer>();
/**
* Instantiates a new renderable image producer.
*
* @param rdblImage
* the rdbl image.
* @param rc
* the rc.
*/
public RenderableImageProducer(RenderableImage rdblImage, RenderContext rc) {
this.rbl = rdblImage;
this.rc = rc;
}
/**
* Sets the render context.
*
* @param rc
* the new render context.
*/
public synchronized void setRenderContext(RenderContext rc) {
this.rc = rc;
}
public synchronized boolean isConsumer(ImageConsumer ic) {
return consumers.contains(ic);
}
public synchronized void startProduction(ImageConsumer ic) {
addConsumer(ic);
Thread t = new Thread(this, "RenderableImageProducer thread"); //$NON-NLS-1$
t.start();
}
public void requestTopDownLeftRightResend(ImageConsumer ic) {
}
public synchronized void removeConsumer(ImageConsumer ic) {
if (ic != null) {
consumers.removeElement(ic);
}
}
public synchronized void addConsumer(ImageConsumer ic) {
if (ic != null && !consumers.contains(ic)) {
consumers.addElement(ic);
}
}
/**
* Creates the rendered image in a new thread.
*/
public void run() {
if (rbl == null) {
return;
}
RenderedImage rd;
if (rc != null) {
rd = rbl.createRendering(rc);
} else {
rd = rbl.createDefaultRendering();
}
ColorModel cm = rd.getColorModel();
if (cm == null) {
cm = ColorModel.getRGBdefault();
}
Raster r = rd.getData();
int w = r.getWidth();
int h = r.getHeight();
for (ImageConsumer c : consumers) {
c.setDimensions(w, h);
c.setHints(ImageConsumer.TOPDOWNLEFTRIGHT | ImageConsumer.COMPLETESCANLINES
| ImageConsumer.SINGLEFRAME | ImageConsumer.SINGLEPASS);
}
int scanLine[] = new int[w];
int pixel[] = null;
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
pixel = r.getPixel(x, y, pixel);
scanLine[x] = cm.getDataElement(pixel, 0);
}
for (ImageConsumer c : consumers) {
c.setPixels(0, y, w, 1, cm, scanLine, 0, w);
}
}
for (ImageConsumer c : consumers) {
c.imageComplete(ImageConsumer.STATICIMAGEDONE);
}
}
}
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