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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.AlphaComposite;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsEnvironment;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.awt.image.VolatileImage;
import static java.awt.Transparency.BITMASK;
/**
* @test
* @key headful
* @bug 7188942
* @summary We should get correct volatile image, when we use BITMASK
* transparency
*/
public final class BitmaskVolatileImage {
public static final int S = 8;
public static void main(final String[] args) {
GraphicsConfiguration gc =
GraphicsEnvironment.getLocalGraphicsEnvironment()
.getDefaultScreenDevice().getDefaultConfiguration();
VolatileImage vi = gc.createCompatibleVolatileImage(S, S, BITMASK);
BufferedImage ci = gc.createCompatibleImage(S, S, BITMASK);
int attempt = 0;
do {
if (++attempt > 10) {
throw new RuntimeException("Too many attempts: " + attempt);
}
vi.validate(gc);
test(vi, ci, gc);
} while (vi.contentsLost());
}
private static void test(VolatileImage vi, BufferedImage ci, GraphicsConfiguration gc) {
for (int r = 0; r <= 255; ++r) {
for (int a = 0; a <= 255; ++a) {
fill(vi, new Color(r, 0, 0, a));
fill(ci, new Color(r, 0, 0, a));
validate(ci, vi.getSnapshot());
}
}
}
private static void fill(Image image, Color color) {
Graphics2D g2d = (Graphics2D) image.getGraphics();
g2d.setColor(color);
g2d.setComposite(AlphaComposite.Src);
g2d.fillRect(0, 0, S, S);
g2d.dispose();
}
private static void validate(BufferedImage ci, BufferedImage snapshot) {
for (int y = 0; y < ci.getHeight(); y++) {
for (int x = 0; x < ci.getWidth(); x++) {
int ci_rgb = ci.getRGB(x, y);
int vi_rgb = snapshot.getRGB(x, y);
if (ci_rgb != vi_rgb) {
System.err.println("Exp:" + Integer.toHexString(ci_rgb));
System.err.println("Actual:" + Integer.toHexString(vi_rgb));
throw new RuntimeException("Colors mismatch!");
}
}
}
}
}
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