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 *

 * This code is free software; you can redistribute it and/or modify it

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 * 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.

 *

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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 java.io.File;

import java.io.IOException;

import javax.imageio.ImageIO;

/**

 * @test

 * @bug 8041129

 * @summary Tests asymmetric source offsets.

 * @author Sergey Bylokhov

 */

public final class IncorrectSourceOffset {

    public static void main(final String[] args) throws IOException {

        GraphicsEnvironment ge = GraphicsEnvironment

                .getLocalGraphicsEnvironment();

        GraphicsConfiguration gc = ge.getDefaultScreenDevice()

                                     .getDefaultConfiguration();

        VolatileImage vi = gc.createCompatibleVolatileImage(511, 255);

        BufferedImage bi = new BufferedImage(511, 255,

                                             BufferedImage.TYPE_INT_ARGB);

        BufferedImage gold = new BufferedImage(511, 255,

                                               BufferedImage.TYPE_INT_ARGB);

        fill(gold);

        while (true) {

            vi.validate(gc);

            fill(vi);

            if (vi.validate(gc) != VolatileImage.IMAGE_OK) {

                try {

                    Thread.sleep(100);

                } catch (final InterruptedException ignored) {

                }

                continue;

            }

            Graphics2D big = bi.createGraphics();

            big.drawImage(vi, 7, 11, 127, 111, 7, 11, 127, 111, null);

            big.dispose();

            if (vi.contentsLost()) {

                try {

                    Thread.sleep(100);

                } catch (final InterruptedException ignored) {

                }

                continue;

            }

            break;

        }

        for (int x = 7; x < 127; ++x) {

            for (int y = 11; y < 111; ++y) {

                if (gold.getRGB(x, y) != bi.getRGB(x, y)) {

                    ImageIO.write(gold, "png", new File("gold.png"));

                    ImageIO.write(bi, "png", new File("bi.png"));

                    throw new RuntimeException("Test failed.");

                }

            }

        }

    }

    private static void fill(Image image) {

        Graphics2D graphics = (Graphics2D) image.getGraphics();

        graphics.setComposite(AlphaComposite.Src);

        for (int i = 0; i < image.getHeight(null); ++i) {

            graphics.setColor(new Color(i, 0, 0));

            graphics.fillRect(0, i, image.getWidth(null), 1);

        }

        graphics.dispose();

    }

}