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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

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 * 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.Rectangle;

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;

import static java.awt.Transparency.TRANSLUCENT;

import static java.awt.image.BufferedImage.TYPE_INT_ARGB;

/**

 * @test

 * @bug 8059942

 * @summary Tests rotated clip when unmanaged image is drawn to VI.

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

 * @author Sergey Bylokhov

 */

public final class IncorrectUnmanagedImageRotatedClip {

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

        BufferedImage bi = makeUnmanagedBI();

        fill(bi);

        test(bi);

    }

    private static void test(final BufferedImage bi) throws IOException {

        GraphicsEnvironment ge = GraphicsEnvironment

                .getLocalGraphicsEnvironment();

        GraphicsConfiguration gc = ge.getDefaultScreenDevice()

                                     .getDefaultConfiguration();

        VolatileImage vi = gc.createCompatibleVolatileImage(500, 200,

                                                            TRANSLUCENT);

        BufferedImage gold = gc.createCompatibleImage(500, 200, TRANSLUCENT);

        // draw to compatible Image

        draw(bi, gold);

        // draw to volatile image

        int attempt = 0;

        BufferedImage snapshot;

        while (true) {

            if (++attempt > 10) {

                throw new RuntimeException("Too many attempts: " + attempt);

            }

            vi.validate(gc);

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

                continue;

            }

            draw(bi, vi);

            snapshot = vi.getSnapshot();

            if (vi.contentsLost()) {

                continue;

            }

            break;

        }

        // validate images

        for (int x = 0; x < gold.getWidth(); ++x) {

            for (int y = 0; y < gold.getHeight(); ++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 void draw(final BufferedImage from,final Image to) {

        final Graphics2D g2d = (Graphics2D) to.getGraphics();

        g2d.setComposite(AlphaComposite.Src);

        g2d.setColor(Color.ORANGE);

        g2d.fillRect(0, 0, to.getWidth(null), to.getHeight(null));

        g2d.rotate(Math.toRadians(45));

        g2d.clip(new Rectangle(41, 42, 43, 44));

        g2d.drawImage(from, 50, 50, Color.blue, null);

        g2d.dispose();

    }

    private static BufferedImage makeUnmanagedBI() {

        final BufferedImage bi = new BufferedImage(500, 200, TYPE_INT_ARGB);

        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();

        } else {

            try {

                bi.setAccelerationPriority(0.0f);

            } catch (final Throwable ignored) {

            }

        }

        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();

    }

}