1 /*
2 * Copyright (c) 2019, Red Hat, Inc.
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 8218854
27 * @requires jdk.version.major >= 8
28 * @run main/othervm MaxAdvanceIsMax
29 */
30
31 import java.awt.Font;
32 import java.awt.FontMetrics;
33 import java.awt.Graphics2D;
34 import java.awt.GraphicsEnvironment;
35 import java.awt.RenderingHints;
36 import java.awt.image.BufferedImage;
37
38 public class MaxAdvanceIsMax {
39
40 private static boolean debug = true;
41
42 private static final class AntialiasHint {
43 private Object aaHint;
44 private String asString = "";
45
46 AntialiasHint(Object aaHint) {
47 if (aaHint.equals(
48 RenderingHints.VALUE_TEXT_ANTIALIAS_OFF)) {
49 asString += "FT_LOAD_TARGET_MONO";
50 } else if (aaHint.equals(
51 RenderingHints.VALUE_TEXT_ANTIALIAS_ON)) {
52 asString += "FT_LOAD_TARGET_NORMAL";
53 } else if (aaHint.equals(
54 RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB)) {
55 asString += "FT_LOAD_TARGET_LCD";
56 } else if (aaHint.equals(
57 RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_VRGB)) {
58 asString += "FT_LOAD_TARGET_LCD_V";
59 }
60 this.aaHint = aaHint;
61 }
62
63 public Object getHint() {
64 return aaHint;
65 }
66
67 public String toString() {
68 return asString;
69 }
70 }
71
72 private static final AntialiasHint[] antialiasHints = {
73 new AntialiasHint(RenderingHints.VALUE_TEXT_ANTIALIAS_OFF),
74 new AntialiasHint(RenderingHints.VALUE_TEXT_ANTIALIAS_ON),
75 new AntialiasHint(RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB),
76 new AntialiasHint(RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_VRGB)
77 };
78
79 private static final class StyleAndSize {
80 int style;
81 float size;
82 public StyleAndSize(int style, float size) {
83 this.style = style;
84 this.size = size;
85 }
86 };
87
88 private static final StyleAndSize[] stylesAndSizes = new StyleAndSize[] {
89 new StyleAndSize(Font.BOLD | Font.ITALIC, 10)
90 };
91
92 public static void main(String[] args) throws Exception {
93 GraphicsEnvironment e =
94 GraphicsEnvironment.getLocalGraphicsEnvironment();
95 Font[] fonts = e.getAllFonts();
96 BufferedImage bi = new BufferedImage(500, 500,
97 BufferedImage.TYPE_INT_RGB);
98 for (AntialiasHint antialiasHint : antialiasHints) {
99 for (Font f : fonts) {
100 for (StyleAndSize styleAndSize : stylesAndSizes) {
101 f = f.deriveFont(styleAndSize.style, styleAndSize.size);
102 Graphics2D g2d = bi.createGraphics();
103 g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
104 antialiasHint.getHint());
105 FontMetrics fm = g2d.getFontMetrics(f);
106 int[] width;
107 int maxWidth = -1;
108 int maxAdvance = fm.getMaxAdvance();
109 if (debug) {
110 System.out.println("Testing " + f + " in " +
111 antialiasHint);
112 System.out.println("getMaxAdvance: " + maxAdvance);
113 }
114 if (maxAdvance != -1) {
115 String failureMessage = null;
116 width = fm.getWidths();
117 for (int j = 0; j < width.length; j++) {
118 if (width[j] > maxWidth) {
119 maxWidth = width[j];
120 }
121 if (width[j] > maxAdvance) {
122 failureMessage = "FAILED: getMaxAdvance is " +
123 "not max for font: " +
124 f.toString() +
125 " getMaxAdvance(): " +
126 maxAdvance +
127 " getWidths()[" + j + "]: " +
128 width[j];
129 throw new Exception(failureMessage);
130 }
131 }
132 }
133 if (debug) {
134 System.out.println("Max char width: " + maxWidth);
135 System.out.println("PASSED");
136 System.out.println(".........................");
137 }
138 }
139 }
140 }
141 System.out.println("TEST PASS - OK");
142 }
143 }