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 8064833
  27  * @summary Test correct font is obtained via famil+style
  28  * @run main HelvLtOblTest
  29  */
  30 
  31 import javax.swing.JComponent;
  32 import javax.swing.JFrame;
  33 import javax.swing.SwingUtilities;
  34 import java.awt.Color;
  35 import java.awt.Dimension;
  36 import java.awt.Font;
  37 import java.awt.Graphics;
  38 import java.awt.Graphics2D;
  39 import java.awt.GraphicsEnvironment;
  40 import java.awt.RenderingHints;
  41 import java.awt.font.FontRenderContext;
  42 import java.awt.font.GlyphVector;
  43 import java.awt.image.BufferedImage;
  44 
  45 public class HelvLtOblTest extends JComponent {
  46 
  47     static Font helvFont = null;
  48 
  49     static int[] codes = { 0x23, 0x4a, 0x48, 0x3, 0x4a, 0x55, 0x42, 0x4d,
  50                     0x4a, 0x44, 0x3,
  51                     0x53, 0x46, 0x45, 0x3, 0x55, 0x46, 0x59, 0x55, };
  52 
  53     static String str = "Big italic red text";
  54 
  55     public static void main(String[] args) throws Exception {
  56         String os = System.getProperty("os.name");
  57         if (!os.startsWith("Mac")) {
  58              return;
  59         }
  60         GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
  61         Font[] fonts = ge.getAllFonts();
  62         for (int i=0; i<fonts.length; i++) {
  63             if (fonts[i].getPSName().equals("Helvetica-LightOblique")) {
  64                  helvFont = fonts[i];
  65                  break;
  66             }
  67         }
  68         if (helvFont == null) {
  69             return;
  70         }
  71         final HelvLtOblTest test = new HelvLtOblTest();
  72         SwingUtilities.invokeLater(() -> {
  73             JFrame f = new JFrame();
  74             f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  75             f.add("Center", test);
  76             f.pack();
  77             f.setVisible(true);
  78         });
  79         test.compareImages();
  80     }
  81 
  82     public Dimension getPreferredSize() {
  83       return new Dimension(400,400);
  84     }
  85 
  86     public void paintComponent(Graphics g) {
  87          super.paintComponent(g);
  88          Graphics2D g2 = (Graphics2D)g;
  89          FontRenderContext frc = new FontRenderContext(null, true, true);
  90          Font f = helvFont.deriveFont(Font.PLAIN, 40);
  91          System.out.println("font = " +f.getFontName());
  92          GlyphVector gv = f.createGlyphVector(frc, codes);
  93          g.setFont(f);
  94          g.setColor(Color.white);
  95          g.fillRect(0,0,400,400);
  96          g.setColor(Color.black);
  97          g2.drawGlyphVector(gv, 5,200);
  98          g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
  99                              RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
 100          g2.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
 101                              RenderingHints.VALUE_FRACTIONALMETRICS_ON);
 102          g2.drawString(str, 5, 250);
 103     }
 104 
 105     void compareImages() {
 106          BufferedImage bi0 = drawText(false);
 107          BufferedImage bi1 = drawText(true);
 108          compare(bi0, bi1);
 109     }
 110 
 111     BufferedImage drawText(boolean doGV) {
 112         int w = 400;
 113         int h = 50;
 114         BufferedImage bi = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
 115         Graphics2D g = bi.createGraphics();
 116         g.setColor(Color.white);
 117         g.fillRect(0,0,w,h);
 118         g.setColor(Color.black);
 119         Font f = helvFont.deriveFont(Font.PLAIN, 40);
 120         g.setFont(f);
 121         int x = 5;
 122         int y = h - 10;
 123         if (doGV) {
 124             FontRenderContext frc = new FontRenderContext(null, true, true);
 125             GlyphVector gv = f.createGlyphVector(frc, codes);
 126             g.drawGlyphVector(gv, 5, y);
 127        } else {
 128            g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
 129                               RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
 130            g.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
 131                               RenderingHints.VALUE_FRACTIONALMETRICS_ON);
 132            g.drawString(str, x, y);
 133        }
 134        return bi;
 135     }
 136 
 137     // Need to allow for minimal rounding error, so allow each component
 138     // to differ by 1.
 139     void compare(BufferedImage bi0, BufferedImage bi1) {
 140         int wid = bi0.getWidth();
 141         int hgt = bi0.getHeight();
 142         for (int x=0; x<wid; x++) {
 143             for (int y=0; y<hgt; y++) {
 144                 int rgb0 = bi0.getRGB(x, y);
 145                 int rgb1 = bi1.getRGB(x, y);
 146                 if (rgb0 == rgb1) continue;
 147                 int r0 = (rgb0 & 0xff0000) >> 16;
 148                 int r1 = (rgb1 & 0xff0000) >> 16;
 149                 int rdiff = r0-r1; if (rdiff<0) rdiff = -rdiff;
 150                 int g0 = (rgb0 & 0x00ff00) >> 8;
 151                 int g1 = (rgb1 & 0x00ff00) >> 8;
 152                 int gdiff = g0-g1; if (gdiff<0) gdiff = -gdiff;
 153                 int b0 = (rgb0 & 0x0000ff);
 154                 int b1 = (rgb1 & 0x0000ff);
 155                 int bdiff = b0-b1; if (bdiff<0) bdiff = -bdiff;
 156                 if (rdiff > 1 || gdiff > 1 || bdiff > 1) {
 157                     throw new RuntimeException(
 158                       "Images differ at x=" + x + " y="+ y + " " +
 159                       Integer.toHexString(rgb0) + " vs " +
 160                       Integer.toHexString(rgb1));
 161                 }
 162             }
 163         }
 164     }
 165 
 166 }