1 /*
   2  * Copyright (c) 2005, 2017, 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 /*
  25  * @test
  26  * @bug 4339415
  27  * @summary Tests that GIF writer plugin is able to write non-index images
  28  */
  29 
  30 import java.awt.Color;
  31 import java.awt.Graphics2D;
  32 import java.awt.Transparency;
  33 import java.awt.color.ColorSpace;
  34 import java.awt.image.BufferedImage;
  35 import java.awt.image.ComponentColorModel;
  36 import java.awt.image.DataBuffer;
  37 import java.awt.image.WritableRaster;
  38 import java.io.File;
  39 import java.util.Random;
  40 
  41 import javax.imageio.ImageIO;
  42 import javax.imageio.ImageWriter;
  43 
  44 public class IndexingTest {
  45 
  46     protected static final String fname = "itest.gif";
  47 
  48     int w;
  49     int h;
  50 
  51     Random rnd;
  52 
  53     public IndexingTest() {
  54         w = h  = 200;
  55         rnd = new Random();
  56     }
  57 
  58     public void doTest() {
  59         ComponentColorModel ccm = createBitmaskColorModel();
  60         BufferedImage img = createComponentImage(w, h, ccm);
  61 
  62         try {
  63             ImageWriter w = ImageIO.getImageWritersByFormatName("GIF").next();
  64             w.setOutput(ImageIO.createImageOutputStream(new File(fname)));
  65             w.write(img);
  66         } catch (Exception e) {
  67             throw new RuntimeException("Test failed.", e);
  68         }
  69 
  70         BufferedImage dst = null;
  71         try {
  72             dst = ImageIO.read(new File(fname));
  73         } catch (Exception e) {
  74             throw new RuntimeException("Test failed.", e);
  75         }
  76 
  77         compareImages(img, dst);
  78 
  79         System.out.println("Test passed.");
  80     }
  81 
  82     protected static ComponentColorModel createBitmaskColorModel() {
  83         ComponentColorModel cm =
  84             new ComponentColorModel(ColorSpace.getInstance(ColorSpace.CS_sRGB),
  85                                     true, false, Transparency.BITMASK,
  86                                     DataBuffer.TYPE_BYTE);
  87         return cm;
  88     }
  89 
  90     protected static BufferedImage createComponentImage(int w, int h,
  91                                                         ComponentColorModel cm)
  92     {
  93         WritableRaster wr = cm.createCompatibleWritableRaster(w, h);
  94 
  95         BufferedImage img = new BufferedImage(cm, wr, false, null);
  96         Graphics2D g = img.createGraphics();
  97         int width = w / 8;
  98         Color[] colors = new Color[8];
  99         colors[0] = Color.red;
 100         colors[1] = Color.green;
 101         colors[2] = Color.blue;
 102         colors[3] = Color.white;
 103         colors[4] = Color.black;
 104         colors[5] = new Color(0x80, 0x80, 0x80, 0x00);
 105         colors[6] = Color.yellow;
 106         colors[7] = Color.cyan;
 107 
 108         for (int i = 0; i < 8; i++) {
 109             g.setColor(colors[i]);
 110             g.fillRect(i * width, 0, width, h);
 111         }
 112         return img;
 113     }
 114 
 115     protected void compareImages(BufferedImage src, BufferedImage dst) {
 116         int n = 10;
 117         while (n-- > 0) {
 118             int x = rnd.nextInt(w);
 119             int y = rnd.nextInt(h);
 120 
 121             int pSrc = src.getRGB(x, y);
 122             int pDst = src.getRGB(x, y);
 123 
 124             if (pSrc != pDst) {
 125                 throw new RuntimeException("Images are different");
 126             }
 127         }
 128     }
 129 
 130     public static void main(String[] args) {
 131         IndexingTest t = new IndexingTest();
 132         t.doTest();
 133     }
 134 }