1 /*
   2  * Copyright (c) 2016, 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  * @bug 8073400 8198412
  26  * @summary Some Monospaced logical fonts have a different width
  27  * @author Dmitry Markov
  28  * @run main MonospacedGlyphWidthTest
  29  */
  30 import java.awt.Font;
  31 import java.awt.GraphicsEnvironment;
  32 import java.awt.font.FontRenderContext;
  33 
  34 public class MonospacedGlyphWidthTest {
  35     private static final int ASCII_START_INDEX = 0x0061;
  36     private static final int ASCII_END_INDEX = 0x007A;
  37 
  38     private static final int TEST_START_INDEX = 0x2018;
  39     private static final int TEST_END_INDEX = 0x201F;
  40 
  41     private static boolean checkChars(int start, int end, boolean except) {
  42         Font font = new Font(Font.MONOSPACED, Font.PLAIN, 12);
  43         double width = getCharWidth(font, 'a');
  44 
  45         for (int i = start; i <= end; i++) {
  46             if (!(font.canDisplay(i))) {
  47                 if (except) {
  48                     continue;
  49                 } else {
  50                     return false;
  51                 }
  52             }
  53             if (width != getCharWidth(font, (char)i)) {
  54                 if (except) {
  55                     throw new RuntimeException(
  56                           "Test Failed: characters have different width!");
  57                 } else {
  58                     return false;
  59                 }
  60             }
  61         }
  62         return true;
  63     }
  64 
  65     private static double getCharWidth(Font font, char c) {
  66         FontRenderContext fontRenderContext = new FontRenderContext(null, false, false);
  67         return font.getStringBounds(new char[] {c}, 0, 1, fontRenderContext).getWidth();
  68     }
  69 
  70     public static void main(String[] args) {
  71         if (!checkChars(ASCII_START_INDEX, ASCII_END_INDEX, false)) {
  72            System.out.println("It appears there are no suitable fonts");
  73            System.out.println("Here are the fonts found on this system:");
  74            GraphicsEnvironment ge =
  75                GraphicsEnvironment.getLocalGraphicsEnvironment();   
  76            Font[] fonts = ge.getAllFonts();
  77            for (Font f : fonts) {
  78                System.out.println(f);
  79            }
  80 
  81            return;
  82         } 
  83           
  84         checkChars(TEST_START_INDEX, TEST_END_INDEX, true);
  85         System.out.println("Test Passed!");
  86     }
  87 }