1 /* 2 * Copyright (c) 2008, 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 6679308 27 * @summary test drawing to Alpha surfaces 28 */ 29 30 import java.awt.*; 31 import java.awt.image.*; 32 33 public class AlphaSurfaceText { 34 35 int wid=400, hgt=200; 36 AlphaSurfaceText(int biType, Color c)37 public AlphaSurfaceText(int biType, Color c) { 38 BufferedImage opaquebi0 = 39 new BufferedImage(wid, hgt, BufferedImage.TYPE_INT_RGB); 40 drawText(opaquebi0, c); 41 42 BufferedImage alphabi = new BufferedImage(wid, hgt, biType); 43 drawText(alphabi, c); 44 BufferedImage opaquebi1 = 45 new BufferedImage(wid, hgt, BufferedImage.TYPE_INT_RGB); 46 Graphics2D g2d = opaquebi1.createGraphics(); 47 g2d.drawImage(alphabi, 0, 0, null); 48 compare(opaquebi0, opaquebi1, biType, c); 49 } 50 drawText(BufferedImage bi, Color c)51 private void drawText(BufferedImage bi, Color c) { 52 Graphics2D g = bi.createGraphics(); 53 g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, 54 RenderingHints.VALUE_TEXT_ANTIALIAS_ON); 55 g.setColor(c); 56 g.setFont(new Font("sansserif", Font.PLAIN, 70)); 57 g.drawString("Hello!", 20, 100); 58 g.setFont(new Font("sansserif", Font.PLAIN, 12)); 59 g.drawString("Hello!", 20, 130); 60 g.setFont(new Font("sansserif", Font.PLAIN, 10)); 61 g.drawString("Hello!", 20, 150); 62 } 63 64 // Need to allow for minimal rounding error, so allow each component 65 // to differ by 1. compare(BufferedImage bi0, BufferedImage bi1, int biType, Color c)66 void compare(BufferedImage bi0, BufferedImage bi1, int biType, Color c) { 67 for (int x=0; x<wid; x++) { 68 for (int y=0; y<hgt; y++) { 69 int rgb0 = bi0.getRGB(x, y); 70 int rgb1 = bi1.getRGB(x, y); 71 if (rgb0 == rgb1) continue; 72 int r0 = (rgb0 & 0xff0000) >> 16; 73 int r1 = (rgb1 & 0xff0000) >> 16; 74 int rdiff = r0-r1; if (rdiff<0) rdiff = -rdiff; 75 int g0 = (rgb0 & 0x00ff00) >> 8; 76 int g1 = (rgb1 & 0x00ff00) >> 8; 77 int gdiff = g0-g1; if (gdiff<0) gdiff = -gdiff; 78 int b0 = (rgb0 & 0x0000ff); 79 int b1 = (rgb1 & 0x0000ff); 80 int bdiff = b0-b1; if (bdiff<0) bdiff = -bdiff; 81 if (rdiff > 1 || gdiff > 1 || bdiff > 1) { 82 throw new RuntimeException( 83 "Images differ for type "+biType + " col="+c + 84 " at x=" + x + " y="+ y + " " + 85 Integer.toHexString(rgb0) + " vs " + 86 Integer.toHexString(rgb1)); 87 } 88 } 89 } 90 91 } main(String[] args)92 public static void main(String[] args) { 93 new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB, Color.white); 94 new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB, Color.red); 95 new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB, Color.blue); 96 new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB_PRE, Color.white); 97 new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB_PRE, Color.red); 98 new AlphaSurfaceText(BufferedImage.TYPE_INT_ARGB_PRE, Color.blue); 99 new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR, Color.white); 100 new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR, Color.red); 101 new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR, Color.blue); 102 new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR_PRE, Color.white); 103 new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR_PRE, Color.red); 104 new AlphaSurfaceText(BufferedImage.TYPE_4BYTE_ABGR_PRE, Color.blue); 105 } 106 } 107