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 wether the colorspace-parameter is applied correctly when
  33  *          creating a gradient.
  34  * @author ceisserer
  35  */
  36 public class LinearColorSpaceGradientTest extends Frame {
  37     BufferedImage srcImg;
  38     Image dstImg;
  39 
  40     public LinearColorSpaceGradientTest() {
  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         g.setPaint(new LinearGradientPaint(new Point2D.Float(0, 0),
  54                 new Point2D.Float(20, 0), new float[] { 0.0f, 1.0f },
  55                 new Color[] { Color.green, Color.blue }, CycleMethod.NO_CYCLE,
  56                 ColorSpaceType.LINEAR_RGB, at));
  57 
  58         g.fillRect(-10, -10, 30, 30);
  59     }
  60 
  61     public void paint(Graphics g1) {
  62         Graphics2D g = (Graphics2D) g1;
  63         renderToVI(createSrcImage(), dstImg);
  64         g.drawImage(dstImg, 20, 20, null);
  65     }
  66 
  67     public void showFrame() {
  68         setSize(500, 500);
  69         setVisible(true);
  70     }
  71 
  72     public void test() {
  73         renderToVI(createSrcImage(), dstImg);
  74 
  75         BufferedImage validationImg = new BufferedImage(20, 20,
  76                 BufferedImage.TYPE_INT_RGB);
  77         Graphics2D valG = (Graphics2D) validationImg.getGraphics();
  78         valG.drawImage(dstImg, 0, 0, null);
  79 
  80         int b = validationImg.getRGB(10, 10) & 0x000000FF;
  81 
  82         if (b > 150) {
  83             System.out.println("Passed!");
  84         } else {
  85             throw new RuntimeException("Test FAILED!");
  86         }
  87     }
  88 
  89     protected BufferedImage createSrcImage() {
  90         BufferedImage bi = new BufferedImage(10, 10, BufferedImage.TYPE_INT_RGB);
  91         Graphics2D g = (Graphics2D) bi.getGraphics();
  92         g.setColor(Color.YELLOW);
  93         g.fillRect(0, 0, 10, 10);
  94         g.setColor(Color.black);
  95         g.drawLine(0, 0, 10, 10);
  96         return bi;
  97     }
  98 
  99     public static void main(String[] args) throws Exception {
 100         boolean show = (args.length > 0 && "-show".equals(args[0]));
 101 
 102         final LinearColorSpaceGradientTest t = new LinearColorSpaceGradientTest();
 103         if (show) {
 104             EventQueue.invokeAndWait(new Runnable() {
 105                 public void run() {
 106                     t.showFrame();
 107                 }
 108             });
 109         } else {
 110             t.test();
 111         }
 112     }
 113 }