114 lines
3.8 KiB
Java
114 lines
3.8 KiB
Java
/*
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* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.awt.Color;
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import java.awt.Dimension;
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import java.awt.Graphics;
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import java.awt.Image;
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import java.awt.geom.Dimension2D;
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import java.awt.image.BufferedImage;
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import sun.awt.image.MultiResolutionCachedImage;
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/**
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* @test
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* @bug 8132123
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* @author Alexander Scherbatiy
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* @summary MultiResolutionCachedImage unnecessarily creates base image to get
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* its size
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* @modules java.desktop/sun.awt.image
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* @run main MultiResolutionCachedImageTest
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*/
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public class MultiResolutionCachedImageTest {
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private static final Color TEST_COLOR = Color.BLUE;
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public static void main(String[] args) {
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Image image = new TestMultiResolutionCachedImage(100);
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image.getWidth(null);
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image.getHeight(null);
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image.getProperty("comment", null);
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int scaledSize = 50;
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Image scaledImage = image.getScaledInstance(scaledSize, scaledSize,
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Image.SCALE_SMOOTH);
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if (!(scaledImage instanceof BufferedImage)) {
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throw new RuntimeException("Wrong scaled image!");
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}
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BufferedImage buffScaledImage = (BufferedImage) scaledImage;
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if (buffScaledImage.getWidth() != scaledSize
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|| buffScaledImage.getHeight() != scaledSize) {
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throw new RuntimeException("Wrong scaled image!");
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}
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if (buffScaledImage.getRGB(scaledSize / 2, scaledSize / 2) != TEST_COLOR.getRGB()) {
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throw new RuntimeException("Wrong scaled image!");
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}
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}
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private static Dimension2D getDimension(int size) {
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return new Dimension(size, size);
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}
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private static Dimension2D[] getSizes(int size) {
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return new Dimension2D[]{getDimension(size), getDimension(2 * size)};
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}
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private static Image createImage(int width, int height) {
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BufferedImage buffImage = new BufferedImage(width, height,
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BufferedImage.TYPE_INT_RGB);
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Graphics g = buffImage.createGraphics();
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g.setColor(TEST_COLOR);
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g.fillRect(0, 0, width, height);
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return buffImage;
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}
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private static class TestMultiResolutionCachedImage
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extends MultiResolutionCachedImage {
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private final int size;
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public TestMultiResolutionCachedImage(int size) {
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super(size, size, getSizes(size), (w, h) -> createImage(w, h));
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this.size = size;
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}
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@Override
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public Image getResolutionVariant(double width, double height) {
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if (width == size || height == size) {
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throw new RuntimeException("Base image is requested!");
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}
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return super.getResolutionVariant(width, height);
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}
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@Override
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protected Image getBaseImage() {
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throw new RuntimeException("Base image is used");
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}
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}
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}
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