1 /*

     2  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

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

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

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

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

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

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 import java.awt.*;

    25 import java.awt.MultipleGradientPaint.*;

    26 import java.awt.geom.*;

    27 import java.awt.image.*;

    28 

    29 /**

    30  * @test

    31  * @bug 8023483

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

    33  *          a gradient.

    34  * @author ceisserer

    35  */

    36 public class GradientTransformTest extends Frame {

    37     BufferedImage srcImg;

    38     Image dstImg;

    39 

    40     public GradientTransformTest() {

    41         srcImg = createSrcImage();

    42         dstImg = getGraphicsConfiguration().createCompatibleVolatileImage(20,

    43                 20);

    44     }

    45 

    46     protected void renderToVI(BufferedImage src, Image dst) {

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

    48 

    49         g.setColor(Color.WHITE);

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

    51 

    52         AffineTransform at = new AffineTransform();

    53         at.translate(-100, 0);

    54 

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

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

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

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

    59 

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

    61     }

    62 

    63     public void paint(Graphics g1) {

    64         Graphics2D g = (Graphics2D) g1;

    65         renderToVI(createSrcImage(), dstImg);

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

    67     }

    68 

    69     public void showFrame() {

    70         setSize(500, 500);

    71         setVisible(true);

    72     }

    73 

    74     public void test() {

    75         renderToVI(createSrcImage(), dstImg);

    76 

    77         BufferedImage validationImg = new BufferedImage(20, 20,

    78                 BufferedImage.TYPE_INT_RGB);

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

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

    81 

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

    83         // encountered.

    84         boolean gradientTranslated = false;

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

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

    87                     && !gradientTranslated; y++) {

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

    89                 if (rgb != -65279) {

    90                     gradientTranslated = true;

    91                 }

    92             }

    93         }

    94 

    95         if (gradientTranslated) {

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

    97         } else {

    98             throw new RuntimeException("Test FAILED!");

    99         }

   100     }

   101 

   102     protected BufferedImage createSrcImage() {

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

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

   105         g.setColor(Color.YELLOW);

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

   107         g.setColor(Color.black);

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

   109         return bi;

   110     }

   111 

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

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

   114         final GradientTransformTest t = new GradientTransformTest();

   115 

   116         if (show) {

   117             EventQueue.invokeAndWait(new Runnable() {

   118                 public void run() {

   119                     t.showFrame();

   120                 }

   121             });

   122         } else {

   123             t.test();

   124         }

   125     }

   126 }