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