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 /* @test 25 * @summary verify outline and stroking of underline match. 26 * @bug 6751616 27 */ 28 29 import java.awt.*; 30 import java.awt.font.*; 31 import java.awt.geom.*; 32 import java.awt.image.*; 33 import java.util.*; 34 35 public class UnderlinePositionTest { 36 main(String[] args)37 public static void main(String[] args) { 38 BufferedImage bi = 39 new BufferedImage(600, 150, BufferedImage.TYPE_INT_RGB); 40 Graphics2D g2d = bi.createGraphics(); 41 g2d.setColor(Color.white); 42 g2d.fillRect(0, 0, 600, 150); 43 44 float x = 10; 45 float y = 90; 46 Map map = new HashMap(); 47 map.put(TextAttribute.UNDERLINE, TextAttribute.UNDERLINE_ON); 48 map.put(TextAttribute.SIZE, new Float(80)); 49 50 FontRenderContext frc = g2d.getFontRenderContext(); 51 52 // Use all spaces for the text so we know we are dealing 53 // only with pixels from the underline. 54 String text = " "; 55 TextLayout tl = new TextLayout(text, map, frc); 56 Shape outline = tl.getOutline(null); 57 Rectangle2D bounds = outline.getBounds(); 58 59 g2d.translate(x, y); 60 g2d.setColor(Color.RED); 61 tl.draw(g2d, 0, 0); 62 63 /* By getting the outline, then its bounds, then filling 64 * according to the same pixelisation rules, this ought to 65 * match the position of the original underline. If any 66 * red pixels are left, then the test will fail. 67 */ 68 g2d.setColor(Color.BLUE); 69 g2d.fill(bounds); 70 g2d.dispose(); 71 72 checkBI(bi, Color.RED); 73 } 74 checkBI(BufferedImage bi, Color badColor)75 static void checkBI(BufferedImage bi, Color badColor) { 76 int badrgb = badColor.getRGB(); 77 int w = bi.getWidth(null); 78 int h = bi.getHeight(null); 79 for (int x=0; x<w; x++) { 80 for (int y=0; y<h; y++) { 81 int col = bi.getRGB(x, y); 82 if (col == badrgb) { 83 throw new RuntimeException("Got " + col); 84 } 85 } 86 } 87 } 88 } 89