// 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.
package common;
import java.awt.image.DataBufferInt;
import java.util.Arrays;
import streamer.BaseElement;
import streamer.ByteBuffer;
import streamer.Element;
import streamer.Link;
public class BufferedImageCopyRectAdapter extends BaseElement {
public static final String SRC_X = "srcX";
public static final String SRC_Y = "srcY";
public static final String TARGET_X = "x";
public static final String TARGET_Y = "y";
public static final String WIDTH = "width";
public static final String HEIGHT = "height";
protected BufferedImageCanvas canvas;
public BufferedImageCopyRectAdapter(String id, BufferedImageCanvas canvas) {
super(id);
this.canvas = canvas;
declarePads();
}
private void declarePads() {
inputPads.put(STDIN, null);
}
@Override
public String toString() {
return "Renderer(" + id + ")";
}
@Override
public void handleData(ByteBuffer buf, Link link) {
if (buf == null)
return;
if (verbose)
System.out.println("[" + this + "] INFO: Data received: " + buf + ".");
int x = (Integer)buf.getMetadata(TARGET_X);
int y = (Integer)buf.getMetadata(TARGET_Y);
int width = (Integer)buf.getMetadata(WIDTH);
int height = (Integer)buf.getMetadata(HEIGHT);
int srcX = (Integer)buf.getMetadata(SRC_X);
int srcY = (Integer)buf.getMetadata(SRC_Y);
buf.unref();
// Copy image
canvas.getOfflineGraphics().copyArea(srcX, srcY, width, height, x - srcX, y - srcY);
// Request update of repainted area
canvas.repaint(x, y, width, height);
}
public static void main(String args[]) {
System.setProperty("streamer.Element.debug", "true");
BufferedImageCanvas canvas = new BufferedImageCanvas(4, 4);
Element renderer = new BufferedImageCopyRectAdapter("renderer", canvas);
int[] pixelsBeforeCopy = new int[] {
// 0
1, 2, 3, 4,
// 1
5, 6, 7, 8,
// 2
9, 10, 11, 12,
// 3
13, 14, 15, 16};
int[] pixelsAfterCopy = new int[] {
// 0
11, 12, 3, 4,
// 1
15, 16, 7, 8,
// 2
9, 10, 11, 12,
// 3
13, 14, 15, 16};
// Initalize image
int[] data = ((DataBufferInt)canvas.getOfflineImage().getRaster().getDataBuffer()).getData();
System.arraycopy(pixelsBeforeCopy, 0, data, 0, pixelsBeforeCopy.length);
ByteBuffer buf = new ByteBuffer(new byte[0]);
buf.putMetadata(TARGET_X, 0);
buf.putMetadata(TARGET_Y, 0);
buf.putMetadata(WIDTH, 2);
buf.putMetadata(HEIGHT, 2);
buf.putMetadata(SRC_X, 2);
buf.putMetadata(SRC_Y, 2);
renderer.handleData(buf, null);
data = ((DataBufferInt)canvas.getOfflineImage().getRaster().getDataBuffer()).getData();
String actualData = Arrays.toString(data);
String expectedData = Arrays.toString(pixelsAfterCopy);
if (!actualData.equals(expectedData))
System.err.println("Actual image: " + actualData + "\nExpected image: " + expectedData + ".");
}
}