1 /*
   2  * Copyright (c) 2015, 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 7162125
  27  * @summary Test ligatures form on OS X.
  28  */
  29 
  30 import java.awt.Color;
  31 import java.awt.Font;
  32 import java.awt.Graphics2D;
  33 import java.awt.image.BufferedImage;
  34 import java.awt.font.TextAttribute;
  35 import java.util.HashMap;
  36 import java.util.Map;
  37 
  38 public class OSXLigatureTest {
  39 
  40     public static void main(String[] args) {
  41         if (!System.getProperty("os.name").startsWith("Mac")) {
  42             return;
  43         }
  44         String ligStr = "ffi";
  45         int w = 50, h = 50;
  46 
  47         BufferedImage bi1 = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
  48         Graphics2D bi1Graphics = bi1.createGraphics();
  49         bi1Graphics.setColor(Color.white);
  50         bi1Graphics.fillRect(0, 0, w, h);
  51         bi1Graphics.setColor(Color.black);
  52         Font noLigFont = new Font("Gill Sans", Font.PLAIN, 30);
  53         bi1Graphics.setFont(noLigFont);
  54         bi1Graphics.drawString(ligStr, 10, 40);
  55 
  56         BufferedImage bi2 = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
  57         Graphics2D bi2Graphics = bi2.createGraphics();
  58         bi2Graphics.setColor(Color.white);
  59         bi2Graphics.fillRect(0, 0, w, h);
  60         bi2Graphics.setColor(Color.black);
  61         Map<TextAttribute, Object> attributes = new HashMap<>();
  62         attributes.put(TextAttribute.LIGATURES, TextAttribute.LIGATURES_ON);
  63         Font ligFont = noLigFont.deriveFont(attributes);
  64         bi2Graphics.setFont(ligFont);
  65         bi2Graphics.drawString(ligStr, 10, 40);
  66 
  67         boolean same = true;
  68         for (int x = 0; x < w; x++) {
  69             for (int y = 0; y < h; y++) {
  70                 int c1 = bi1.getRGB(x, y);
  71                 int c2 = bi2.getRGB(x, y);
  72                 same &= (c1 == c2);
  73             }
  74             if (!same) {
  75                break;
  76             }
  77         }
  78         if (same) {
  79             throw new RuntimeException("Images do not differ - no ligature");
  80         }
  81     }
  82 }