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 * 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

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 * 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,

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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.DataBuffer;

import java.awt.image.DataBufferByte;

import java.awt.image.DataBufferInt;

import java.awt.image.DataBufferShort;

import java.awt.image.VolatileImage;

import java.io.File;

import java.io.IOException;

import javax.imageio.ImageIO;

/**

 * @test

 * @key headful

 * @summary Tests asymmetric source offsets when unmanaged image is drawn to VI.

 *          Results of the blit to compatibleImage are used for comparison.

 * @author Sergey Bylokhov

 */

public final class IncorrectUnmanagedImageSourceOffset {

    private static final int[] TYPES = {TYPE_INT_RGB, TYPE_INT_ARGB,

                                        TYPE_INT_ARGB_PRE, TYPE_INT_BGR,

                                        TYPE_3BYTE_BGR, TYPE_4BYTE_ABGR,

                                        TYPE_4BYTE_ABGR_PRE,

                                        /*TYPE_USHORT_565_RGB,

                                        TYPE_USHORT_555_RGB, TYPE_BYTE_GRAY,

                                        TYPE_USHORT_GRAY,*/ TYPE_BYTE_BINARY,

    private static final int[] TRANSPARENCIES = {OPAQUE, BITMASK, TRANSLUCENT};

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

        for (final int viType : TRANSPARENCIES) {

            for (final int biType : TYPES) {

                BufferedImage bi = makeUnmanagedBI(biType);

                fill(bi);

                test(bi, viType);

            }

        }

    }

    private static void test(BufferedImage bi, int type)

            throws IOException {

        GraphicsEnvironment ge = GraphicsEnvironment

                .getLocalGraphicsEnvironment();

        GraphicsConfiguration gc = ge.getDefaultScreenDevice()

                                     .getDefaultConfiguration();

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

        BufferedImage gold = gc.createCompatibleImage(511, 255, type);

        // draw to compatible Image

        Graphics2D big = gold.createGraphics();

        // force scaled blit

        big.drawImage(bi, 7, 11, 127, 111, 7, 11, 127 * 2, 111, null);

        big.dispose();

        // draw to volatile image

        BufferedImage snapshot;

        while (true) {

            vi.validate(gc);

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

                try {

                    Thread.sleep(100);

                } catch (final InterruptedException ignored) {

                }

                continue;

            }

            Graphics2D vig = vi.createGraphics();

            // force scaled blit

            vig.drawImage(bi, 7, 11, 127, 111, 7, 11, 127 * 2, 111, null);

            vig.dispose();

            snapshot = vi.getSnapshot();

            if (vi.contentsLost()) {

                try {

                    Thread.sleep(100);

                } catch (final InterruptedException ignored) {

                }

                continue;

            }

            break;

        }

        // validate images

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

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

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

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

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

                    throw new RuntimeException("Test failed.");

                }

            }

        }

    }

    private static BufferedImage makeUnmanagedBI(final int type) {

        final DataBuffer db = bi.getRaster().getDataBuffer();

        if (db instanceof DataBufferInt) {

            ((DataBufferInt) db).getData();

        } else if (db instanceof DataBufferShort) {

            ((DataBufferShort) db).getData();

        } else if (db instanceof DataBufferByte) {

            ((DataBufferByte) db).getData();

        }

        return bi;

    }

    private static void fill(final Image image) {

        final 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();

    }

}