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/*
* Copyright (c) 2015, 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.Dimension;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.geom.Dimension2D;
import java.awt.image.BufferedImage;
import sun.awt.image.MultiResolutionCachedImage;
/**
* @test
* @bug 8132123
* @author Alexander Scherbatiy
* @summary MultiResolutionCachedImage unnecessarily creates base image to get
* its size
* @modules java.desktop/sun.awt.image
* @run main MultiResolutionCachedImageTest
*/
public class MultiResolutionCachedImageTest {
private static final Color TEST_COLOR = Color.BLUE;
public static void main(String[] args) {
Image image = new TestMultiResolutionCachedImage(100);
image.getWidth(null);
image.getHeight(null);
image.getProperty("comment", null);
int scaledSize = 50;
Image scaledImage = image.getScaledInstance(scaledSize, scaledSize,
Image.SCALE_SMOOTH);
if (!(scaledImage instanceof BufferedImage)) {
throw new RuntimeException("Wrong scaled image!");
}
BufferedImage buffScaledImage = (BufferedImage) scaledImage;
if (buffScaledImage.getWidth() != scaledSize
|| buffScaledImage.getHeight() != scaledSize) {
throw new RuntimeException("Wrong scaled image!");
}
if (buffScaledImage.getRGB(scaledSize / 2, scaledSize / 2) != TEST_COLOR.getRGB()) {
throw new RuntimeException("Wrong scaled image!");
}
}
private static Dimension2D getDimension(int size) {
return new Dimension(size, size);
}
private static Dimension2D[] getSizes(int size) {
return new Dimension2D[]{getDimension(size), getDimension(2 * size)};
}
private static Image createImage(int width, int height) {
BufferedImage buffImage = new BufferedImage(width, height,
BufferedImage.TYPE_INT_RGB);
Graphics g = buffImage.createGraphics();
g.setColor(TEST_COLOR);
g.fillRect(0, 0, width, height);
return buffImage;
}
private static class TestMultiResolutionCachedImage
extends MultiResolutionCachedImage {
private final int size;
public TestMultiResolutionCachedImage(int size) {
super(size, size, getSizes(size), (w, h) -> createImage(w, h));
this.size = size;
}
@Override
public Image getResolutionVariant(double width, double height) {
if (width == size || height == size) {
throw new RuntimeException("Base image is requested!");
}
return super.getResolutionVariant(width, height);
}
@Override
protected Image getBaseImage() {
throw new RuntimeException("Base image is used");
}
}
}
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