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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

 * 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.BufferedImage;

import java.awt.image.VolatileImage;

import java.io.File;

import java.io.IOException;

import javax.imageio.ImageIO;

/**

 * @test

 * @bug 8041129

 * @summary Destination offset should be correct in case of Surface->SW blit.

 *          Destination outside of the drawing area should be untouched.

 * @author Sergey Bylokhov

 */

public final class IncorrectDestinationOffset {

    private static final int SIZE = 128;

    private static final double[] SCALES = {0.25, 0.5, 1, 1.5, 2.0, 4};

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

        GraphicsEnvironment ge = GraphicsEnvironment

                .getLocalGraphicsEnvironment();

        GraphicsConfiguration gc = ge.getDefaultScreenDevice()

                                     .getDefaultConfiguration();

        VolatileImage vi = gc.createCompatibleVolatileImage(SIZE, SIZE);

        BufferedImage bi = new BufferedImage(SIZE, SIZE,

                                             BufferedImage.TYPE_INT_ARGB);

        for (double scale : SCALES) {

            while (true) {

                // initialize Volatile Image

                vi.validate(gc);

                Graphics2D g2d = vi.createGraphics();

                g2d.setColor(Color.green);

                g2d.fillRect(0, 0, SIZE, SIZE);

                g2d.dispose();

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

                    try {

                        Thread.sleep(100);

                    } catch (InterruptedException ignored) {

                    }

                    continue;

                }

                // Draw the VolatileImage to BI with scale and offsets

                Graphics2D g = bi.createGraphics();

                g.setComposite(AlphaComposite.Src);

                g.setColor(Color.RED);

                g.fillRect(0, 0, SIZE / 2, SIZE / 2);

                g.setColor(Color.BLUE);

                g.fillRect(SIZE / 2, 0, SIZE / 2, SIZE / 2);

                g.setColor(Color.ORANGE);

                g.fillRect(0, SIZE / 2, SIZE / 2, SIZE / 2);

                g.setColor(Color.MAGENTA);

                g.fillRect(SIZE / 2, SIZE / 2, SIZE / 2, SIZE / 2);

                int point2draw = (int) (100 * scale);

                int size2draw = (int) (SIZE * scale);

                g.drawImage(vi, point2draw, point2draw, size2draw, size2draw,

                            null);

                g.dispose();

                if (vi.contentsLost()) {

                    try {

                        Thread.sleep(100);

                    } catch (InterruptedException ignored) {

                    }

                    continue;

                }

                validate(bi, point2draw, size2draw);

                break;

            }

        }

    }

    private static void validate(BufferedImage bi, int point2draw,

                                 int size2draw)

            throws IOException {

        for (int x = 0; x < SIZE; ++x) {

            for (int y = 0; y < SIZE; ++y) {

                if (isInsideGreenArea(point2draw, size2draw, x, y)) {

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

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

                        throw new RuntimeException("Test failed.");

                    }

                } else {

                    if (isRedArea(x, y)) {

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

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

                            throw new RuntimeException("Test failed.");

                        }

                    }

                    if (isBlueArea(x, y)) {

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

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

                            throw new RuntimeException("Test failed.");

                        }

                    }

                    if (isOrangeArea(x, y)) {

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

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

                            throw new RuntimeException("Test failed.");

                        }

                    }

                    if (isMagentaArea(x, y)) {

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

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

                            throw new RuntimeException("Test failed.");

                        }

                    }

                }

            }

        }

    }

    private static boolean isRedArea(int x, int y) {

        return x < SIZE / 2 && y < SIZE / 2;

    }

    private static boolean isBlueArea(int x, int y) {

        return x >= SIZE / 2 && y < SIZE / 2;

    }

    private static boolean isOrangeArea(int x, int y) {

        return x < SIZE / 2 && y >= SIZE / 2;

    }

    private static boolean isMagentaArea(int x, int y) {

        return x >= SIZE / 2 && y >= SIZE / 2;

    }

    private static boolean isInsideGreenArea(int point2draw, int size2draw,

                                             int x, int y) {

        return x >= point2draw && x < point2draw + size2draw && y >=

                point2draw && y < point2draw + size2draw;

    }

}