1 /* 2 * Copyright (c) 2018, 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 RotatedTextTest 26 * @bug 8203485 27 * @summary This test verifies that rotated text preserves the width. 28 * @run main RotatedTextTest 29 */ 30 31 import java.awt.Color; 32 import java.awt.Dimension; 33 import java.awt.Font; 34 import java.awt.FontMetrics; 35 import java.awt.Graphics; 36 import java.awt.Graphics2D; 37 import java.awt.geom.Rectangle2D; 38 import java.awt.image.BufferedImage; 39 import java.io.BufferedOutputStream; 40 import java.io.File; 41 import java.io.FileOutputStream; 42 import javax.imageio.ImageIO; 43 44 public class RotatedTextTest 45 { 46 static final int size = 720; 47 static final Font fnt = new Font(Font.SERIF, Font.PLAIN, 12); 48 static final String text = "The quick brown fox jumps over the lazy dog"; 49 50 static void drawRotatedText(Graphics g) { 51 Graphics2D g2d = (Graphics2D)g; 52 53 g2d.setFont(fnt); 54 55 FontMetrics metrics = g2d.getFontMetrics(); 56 Rectangle2D bounds = metrics.getStringBounds(text, g2d); 57 58 59 g2d.setColor(Color.black); 60 g2d.fillRect(0, 0, size, size); 61 62 g2d.setColor(Color.white); 63 64 float[] angles = new float[] { 0, 15, 45, 60, 90, -45, -90, -135, -180, 135, }; 65 66 for (float a : angles) { 67 Graphics2D rotated = (Graphics2D)g2d.create(); 68 69 rotated.translate(size/2, size/2); 70 rotated.rotate(Math.toRadians(a)); 71 rotated.translate(30, 0); 72 73 int width_original = metrics.stringWidth(text); 74 int width_rotated = rotated.getFontMetrics().stringWidth(text); 75 76 rotated.drawString(text, 0, 0); 77 rotated.drawString(String.format(" %.0f", a), width_original, 0); 78 79 rotated.setColor(Color.green); 80 rotated.draw(bounds); 81 82 System.out.printf("Angle: %.0f, width diff: %d\n", a, (width_rotated - width_original)); 83 84 rotated.dispose(); 85 86 if (width_rotated != width_original) { 87 throw new RuntimeException("Test failed for angle " + a); 88 } 89 } 90 } 91 92 public static void main(String args[]) 93 { 94 final BufferedImage dst = new BufferedImage(size, size, BufferedImage.TYPE_INT_RGB); 95 Graphics g = dst.createGraphics(); 96 97 try { 98 drawRotatedText(g); 99 } finally { 100 g.dispose(); 101 writeToFile(dst); 102 } 103 } 104 105 static final String title; 106 static final String file; 107 108 static { 109 String vendorName = System.getProperty("java.vendor"); 110 String version = System.getProperty("java.version"); 111 String runtimeName = System.getProperty("java.runtime.name"); 112 113 114 int index = runtimeName.indexOf(" Runtime Environment"); 115 runtimeName = runtimeName.substring(0, index).trim(); 116 117 title = vendorName + ", " + runtimeName + ", " + version; 118 file = "rotated-text-" + title.replace(", ", "-") 119 .replace(" ", "-") + ".png"; 120 } 121 122 private static void writeToFile(final BufferedImage bi) { 123 File imageFile = new File(file); 124 FileOutputStream imageOutStream; 125 BufferedOutputStream imageBOS = null; 126 try { 127 imageOutStream = new FileOutputStream(imageFile); 128 imageBOS = new BufferedOutputStream(imageOutStream); 129 130 ImageIO.setUseCache(false); 131 ImageIO.write(bi, "png", imageBOS); 132 133 imageBOS.close(); 134 imageOutStream.close(); 135 } 136 catch (Exception e) { 137 System.out.println(e.getMessage()); 138 } 139 } 140 }