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 6307618 27 * @summary Test verifies that GIF image writer updates the dimension of the 28 * logical screen according to image dimension 29 * @modules java.desktop/com.sun.imageio.plugins.gif 30 */ 31 32import java.awt.Color; 33import java.awt.Graphics2D; 34import java.awt.image.BufferedImage; 35import java.io.ByteArrayInputStream; 36import java.io.ByteArrayOutputStream; 37import java.io.IOException; 38 39import javax.imageio.IIOImage; 40import javax.imageio.ImageIO; 41import javax.imageio.ImageReader; 42import javax.imageio.ImageTypeSpecifier; 43import javax.imageio.ImageWriteParam; 44import javax.imageio.ImageWriter; 45import javax.imageio.metadata.IIOMetadata; 46import javax.imageio.stream.ImageInputStream; 47import javax.imageio.stream.ImageOutputStream; 48 49import com.sun.imageio.plugins.gif.GIFStreamMetadata; 50 51public class LogicalScreenDimensionTest { 52 public static void main(String[] args) throws IOException { 53 String format = "GIF"; 54 ImageWriter writer = 55 ImageIO.getImageWritersByFormatName(format).next(); 56 if (writer == null) { 57 throw new RuntimeException("No available writers for " + format); 58 } 59 60 BufferedImage img = createTestImage(100, 100, BufferedImage.TYPE_BYTE_GRAY); 61 62 ImageWriteParam p = writer.getDefaultWriteParam(); 63 ImageTypeSpecifier type = 64 ImageTypeSpecifier.createFromRenderedImage(img); 65 IIOMetadata inImageMetadata = 66 writer.getDefaultImageMetadata(type, p); 67 68 IIOMetadata inStreamMetadata = writer.getDefaultStreamMetadata(p); 69 70 // write and read image 71 ByteArrayOutputStream baos = new ByteArrayOutputStream(); 72 73 ImageOutputStream ios = ImageIO.createImageOutputStream(baos); 74 writer.setOutput(ios); 75 76 writer.write(inStreamMetadata, new IIOImage(img, null, inImageMetadata), p); 77 78 ios.flush(); 79 ios.close(); 80 81 // read result 82 ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray()); 83 ImageInputStream iis = ImageIO.createImageInputStream(bais); 84 ImageReader reader = ImageIO.getImageReader(writer); 85 reader.setInput(iis); 86 87 IIOMetadata outStreamMetadata = reader.getStreamMetadata(); 88 89 GIFStreamMetadata gifStreamMetadata = (GIFStreamMetadata)outStreamMetadata; 90 91 if (gifStreamMetadata.logicalScreenWidth != img.getWidth() || 92 gifStreamMetadata.logicalScreenHeight != img.getHeight()) { 93 throw new RuntimeException("Test failed due to wrong logical screen dimension."); 94 } 95 } 96 97 private static BufferedImage createTestImage(int w, int h, int type) { 98 BufferedImage res = new BufferedImage(w, h, type); 99 Graphics2D g = res.createGraphics(); 100 g.setColor(Color.white); 101 g.fillRect(0, 0, w, h); 102 g.setColor(Color.black); 103 g.fillRect(w/4, h/4, w/2, h/2); 104 105 106 return res; 107 } 108} 109