1 /*
2 * Copyright (c) 2014, 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 import javax.swing.JComponent;
25 import javax.swing.JFrame;
26 import javax.swing.SwingUtilities;
27 import java.awt.Color;
28 import java.awt.Dimension;
29 import java.awt.Font;
30 import java.awt.Graphics;
31 import java.awt.Graphics2D;
32 import java.awt.GraphicsEnvironment;
33 import java.awt.RenderingHints;
34 import java.awt.font.FontRenderContext;
35 import java.awt.font.GlyphVector;
36 import java.awt.image.BufferedImage;
37
38 public class HelvLtOblTest extends JComponent {
39
40 static Font helvFont = null;
41
42 static int[] codes = { 0x23, 0x4a, 0x48, 0x3, 0x4a, 0x55, 0x42, 0x4d,
43 0x4a, 0x44, 0x3,
44 0x53, 0x46, 0x45, 0x3, 0x55, 0x46, 0x59, 0x55, };
45
46 static String str = "Big italic red text";
47
48 public static void main(String[] args) throws Exception {
49 String os = System.getProperty("os.name");
50 if (!os.startsWith("Mac")) {
51 return;
52 }
53 GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
54 Font[] fonts = ge.getAllFonts();
55 for (int i=0; i<fonts.length; i++) {
56 if (fonts[i].getPSName().equals("Helvetica-LightOblique")) {
57 helvFont = fonts[i];
58 break;
59 }
60 }
61 if (helvFont == null) {
62 return;
63 }
64 final HelvLtOblTest test = new HelvLtOblTest();
65 SwingUtilities.invokeLater(() -> {
66 JFrame f = new JFrame();
67 f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
68 f.add("Center", test);
69 f.pack();
70 f.setVisible(true);
71 });
72 test.compareImages();
73 }
74
75 public Dimension getPreferredSize() {
76 return new Dimension(400,400);
77 }
78
79 public void paintComponent(Graphics g) {
80 super.paintComponent(g);
81 Graphics2D g2 = (Graphics2D)g;
82 FontRenderContext frc = new FontRenderContext(null, true, true);
83 Font f = helvFont.deriveFont(Font.PLAIN, 40);
84 System.out.println("font = " +f.getFontName());
85 GlyphVector gv = f.createGlyphVector(frc, codes);
86 g.setFont(f);
87 g.setColor(Color.white);
88 g.fillRect(0,0,400,400);
89 g.setColor(Color.black);
90 g2.drawGlyphVector(gv, 5,200);
91 g2.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
92 RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
93 g2.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
94 RenderingHints.VALUE_FRACTIONALMETRICS_ON);
95 g2.drawString(str, 5, 250);
96 }
97
98 void compareImages() {
99 BufferedImage bi0 = drawText(false);
100 BufferedImage bi1 = drawText(true);
101 compare(bi0, bi1);
102 }
103
104 BufferedImage drawText(boolean doGV) {
105 int w = 400;
106 int h = 50;
107 BufferedImage bi = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
108 Graphics2D g = bi.createGraphics();
109 g.setColor(Color.white);
110 g.fillRect(0,0,w,h);
111 g.setColor(Color.black);
112 Font f = helvFont.deriveFont(Font.PLAIN, 40);
113 g.setFont(f);
114 int x = 5;
115 int y = h - 10;
116 if (doGV) {
117 FontRenderContext frc = new FontRenderContext(null, true, true);
118 GlyphVector gv = f.createGlyphVector(frc, codes);
119 g.drawGlyphVector(gv, 5, y);
120 } else {
121 g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
122 RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
123 g.setRenderingHint(RenderingHints.KEY_FRACTIONALMETRICS,
124 RenderingHints.VALUE_FRACTIONALMETRICS_ON);
125 g.drawString(str, x, y);
126 }
127 return bi;
128 }
129
130 // Need to allow for minimal rounding error, so allow each component
131 // to differ by 1.
132 void compare(BufferedImage bi0, BufferedImage bi1) {
133 int wid = bi0.getWidth();
134 int hgt = bi0.getHeight();
135 for (int x=0; x<wid; x++) {
136 for (int y=0; y<hgt; y++) {
137 int rgb0 = bi0.getRGB(x, y);
138 int rgb1 = bi1.getRGB(x, y);
139 if (rgb0 == rgb1) continue;
140 int r0 = (rgb0 & 0xff0000) >> 16;
141 int r1 = (rgb1 & 0xff0000) >> 16;
142 int rdiff = r0-r1; if (rdiff<0) rdiff = -rdiff;
143 int g0 = (rgb0 & 0x00ff00) >> 8;
144 int g1 = (rgb1 & 0x00ff00) >> 8;
145 int gdiff = g0-g1; if (gdiff<0) gdiff = -gdiff;
146 int b0 = (rgb0 & 0x0000ff);
147 int b1 = (rgb1 & 0x0000ff);
148 int bdiff = b0-b1; if (bdiff<0) bdiff = -bdiff;
149 if (rdiff > 1 || gdiff > 1 || bdiff > 1) {
150 throw new RuntimeException(
151 "Images differ at x=" + x + " y="+ y + " " +
152 Integer.toHexString(rgb0) + " vs " +
153 Integer.toHexString(rgb1));
154 }
155 }
156 }
157 }
158
159 }