1 /* 2 * Copyright (c) 2001, 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 4432615 27 * @summary Tests progressive writing in the PNG encoder 28 * @modules java.desktop/com.sun.imageio.plugins.png 29 */ 30 31 import java.awt.Color; 32 import java.awt.Graphics2D; 33 import java.awt.image.BufferedImage; 34 import java.io.File; 35 import java.io.IOException; 36 import java.util.Iterator; 37 import java.util.Random; 38 39 import javax.imageio.IIOImage; 40 import javax.imageio.ImageIO; 41 import javax.imageio.ImageWriteParam; 42 import javax.imageio.ImageWriter; 43 import javax.imageio.stream.ImageOutputStream; 44 45 public class WriteProgressive { 46 47 public static void main(String[] args) throws IOException { 48 Iterator witer = ImageIO.getImageWritersByFormatName("png"); 49 ImageWriter w = (ImageWriter)witer.next(); 50 51 File f = File.createTempFile("WriteProgressive", ".png"); 52 ImageOutputStream ios = ImageIO.createImageOutputStream(f); 53 w.setOutput(ios); 54 55 BufferedImage bi = new BufferedImage(100, 100, 56 BufferedImage.TYPE_3BYTE_BGR); 57 Graphics2D g = bi.createGraphics(); 58 Random r = new Random(10); 59 for (int i = 0; i < 10000; i++) { 60 Color c = 61 new Color(r.nextInt(256), r.nextInt(256), r.nextInt(256)); 62 g.setColor(c); 63 g.fillRect(r.nextInt(100), r.nextInt(100), 1, 1); 64 } 65 66 IIOImage iioimage = new IIOImage(bi, null, null); 67 68 ImageWriteParam param = w.getDefaultWriteParam(); 69 param.setProgressiveMode(ImageWriteParam.MODE_DEFAULT); 70 71 try { 72 w.write(null, iioimage, param); 73 } catch (NullPointerException npe) { 74 throw new RuntimeException("Got NPE during write!"); 75 } 76 77 ios.close(); 78 79 BufferedImage bi2 = ImageIO.read(f); 80 f.delete(); 81 82 ImageCompare.compare(bi, bi2); 83 } 84 }