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

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 * This code is distributed in the hope that it will be useful, but WITHOUT

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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.*;

import java.awt.MultipleGradientPaint.*;

import java.awt.geom.*;

import java.awt.image.*;

/**

 * @test

 * @bug 8023483

 * @summary tests if the transform-parameter is applied correctly when creating

 *          a gradient.

 * @author ceisserer

 */

public class GradientTransformTest extends Frame {

    BufferedImage srcImg;

    Image dstImg;

    public GradientTransformTest() {

        srcImg = createSrcImage();

        dstImg = getGraphicsConfiguration().createCompatibleVolatileImage(20,

                20);

    }

    protected void renderToVI(BufferedImage src, Image dst) {

        Graphics2D g = (Graphics2D) dst.getGraphics();

        g.setColor(Color.WHITE);

        g.fillRect(0, 0, dst.getWidth(null), dst.getHeight(null));

        AffineTransform at = new AffineTransform();

        at.translate(-100, 0);

        g.setPaint(new LinearGradientPaint(new Point2D.Float(100, 0),

                new Point2D.Float(120, 0), new float[] { 0.0f, 0.75f, 1.0f },

                new Color[] { Color.red, Color.green, Color.blue },

                CycleMethod.NO_CYCLE, ColorSpaceType.SRGB, at));

        g.fillRect(-10, -10, 30, 30);

    }

    public void paint(Graphics g1) {

        Graphics2D g = (Graphics2D) g1;

        renderToVI(createSrcImage(), dstImg);

        g.drawImage(dstImg, 20, 20, null);

    }

    public void showFrame() {

        setSize(500, 500);

        setVisible(true);

    }

    public void test() {

        renderToVI(createSrcImage(), dstImg);

        BufferedImage validationImg = new BufferedImage(20, 20,

                BufferedImage.TYPE_INT_RGB);

        Graphics2D valG = (Graphics2D) validationImg.getGraphics();

        valG.drawImage(dstImg, 0, 0, null);

        // Loop over all pixel, and count the different pixel values

        // encountered.

        boolean gradientTranslated = false;

        for (int x = 0; x < validationImg.getWidth() && !gradientTranslated; x++) {

            for (int y = 0; y < validationImg.getHeight()

                    && !gradientTranslated; y++) {

                int rgb = validationImg.getRGB(x, y);

                if (rgb != -65279) {

                    gradientTranslated = true;

                }

            }

        }

        if (gradientTranslated) {

            System.out.println("Passed!");

        } else {

            throw new RuntimeException("Test FAILED!");

        }

    }

    protected BufferedImage createSrcImage() {

        BufferedImage bi = new BufferedImage(10, 10, BufferedImage.TYPE_INT_RGB);

        Graphics2D g = (Graphics2D) bi.getGraphics();

        g.setColor(Color.YELLOW);

        g.fillRect(0, 0, 10, 10);

        g.setColor(Color.black);

        g.drawLine(0, 0, 10, 10);

        return bi;

    }

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

        boolean show = (args.length > 0 && "-show".equals(args[0]));

        final GradientTransformTest t = new GradientTransformTest();

        if (show) {

            EventQueue.invokeAndWait(new Runnable() {

                public void run() {

                    t.showFrame();

                }

            });

        } else {

            t.test();

        }

    }

}