/*
* Copyright ( c ) 2020 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code 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
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.Image;
import java.awt.ImageCapabilities;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import java.awt.image.ImageObserver;
import java.awt.image.ImageProducer;
import java.awt.image.VolatileImage;
import static java.awt.image.BufferedImage.TYPE_INT_ARGB_PRE;
/**
* @ test
* @ bug 7183828
* @ summary Tests that no exceptions are thrown when we draw the custom image
*/
public final class CustomImage extends Image {
public static void main(String[] args) {
Image ci = new CustomImage();
VolatileImage cvi = new CustomVolatileImage();
BufferedImage bi = generateImage();
Graphics2D g2d = bi.createGraphics();
// Custom Image
test(g2d.drawImage(ci, 0 , 0 , null ), bi);
test(g2d.drawImage(ci, 0 , 0 , 5 , 5 , 0 , 0 , 5 , 5 , Color.BLUE, null ), bi);
test(g2d.drawImage(ci, 0 , 0 , 9 , 9 , Color.BLUE, null ), bi);
test(g2d.drawImage(ci, 0 , 0 , 5 , 5 , 0 , 0 , 9 , 9 , Color.BLUE, null ), bi);
test(g2d.drawImage(ci, AffineTransform.getRotateInstance(30 ), null ), bi);
// Custom VolatileImage
test(g2d.drawImage(cvi, 0 , 0 , null ), bi);
test(g2d.drawImage(cvi, 0 , 0 , 5 , 5 , 0 , 0 , 5 , 5 , Color.BLUE, null ), bi);
test(g2d.drawImage(cvi, 0 , 0 , 9 , 9 , Color.BLUE, null ), bi);
test(g2d.drawImage(cvi, 0 , 0 , 5 , 5 , 0 , 0 , 9 , 9 , Color.BLUE, null ), bi);
test(g2d.drawImage(cvi, AffineTransform.getRotateInstance(30 ), null ), bi);
g2d.dispose();
}
private static BufferedImage generateImage() {
BufferedImage bi = new BufferedImage(100 , 100 , TYPE_INT_ARGB_PRE);
Graphics g = bi.createGraphics();
g.setColor(Color.GREEN);
g.fillRect(0 , 0 , 100 , 100 );
g.dispose();
return bi;
}
private static void test(boolean complete, BufferedImage bi) {
if (complete) {
throw new RuntimeException("Custom image successfully drawn" );
}
for (int y = 0 ; y < bi.getHeight(); ++y) {
for (int x = 0 ; x < bi.getWidth(); ++x) {
if (bi.getRGB(x, y) != Color.GREEN.getRGB()) {
throw new RuntimeException("The image was changed" );
}
}
}
}
@Override
public int getWidth(ImageObserver observer) {
return 100 ;
}
@Override
public int getHeight(ImageObserver observer) {
return 100 ;
}
@Override
public ImageProducer getSource() {
return null ;
}
@Override
public Graphics getGraphics() {
return null ;
}
@Override
public Object getProperty(String name, ImageObserver observer) {
return null ;
}
private static final class CustomVolatileImage extends VolatileImage {
@Override
public BufferedImage getSnapshot() {
return null ;
}
@Override
public int getWidth() {
return 100 ;
}
@Override
public int getHeight() {
return 100 ;
}
@Override
public Graphics2D createGraphics() {
return null ;
}
@Override
public int validate(GraphicsConfiguration gc) {
return 0 ;
}
@Override
public boolean contentsLost() {
return false ;
}
@Override
public ImageCapabilities getCapabilities() {
return null ;
}
@Override
public int getWidth(ImageObserver observer) {
return 100 ;
}
@Override
public int getHeight(ImageObserver observer) {
return 100 ;
}
@Override
public Object getProperty(String name, ImageObserver observer) {
return null ;
}
}
}
Messung V0.5 in Prozent C=93 H=87 G=89
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-06-10)
¤
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