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/*
* Copyright (c) 1999, 2024, 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.
*/
/*
@test
@bug 4236576
@summary tests that a BufferedImage in TYPE_3BYTE_BGR format is correctly
drawn when there is an offset between the Graphics clip bounds
and the clip box of the underlying device context.
@run main OffsetCalculationTest
*/
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.image.BufferedImage;
import java.awt.image.DataBuffer;
public class OffsetCalculationTest {
public static void main(String[] args) {
BufferedImage srcImage = new BufferedImage(500, 500, BufferedImage.TYPE_3BYTE_BGR);
DataBuffer buffer = srcImage.getRaster().getDataBuffer();
for (int i = 2; i < buffer.getSize(); i+=3) {
// setting each pixel to blue via the data buffer elements.
buffer.setElem(i - 2, 0xff);
buffer.setElem(i - 1, 0);
buffer.setElem(i, 0);
}
int w = 200, h = 200;
BufferedImage destImage = new BufferedImage(w, h, BufferedImage.TYPE_3BYTE_BGR);
Graphics2D g = destImage.createGraphics();
Rectangle r = new Rectangle(0, 0, w, h);
g.setClip(r.x - 1, r.y, r.width + 1, r.height);
g.drawImage(srcImage, 0, 0, null);
int bluepix = Color.blue.getRGB();
for (int y = 0; y < w; y++) {
for (int x = 0; x < h; x++) {
if (destImage.getRGB(x, y) != bluepix) {
throw new RuntimeException("Not Blue");
}
}
}
}
}
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