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.*;
32 import java.awt.image.BufferedImage;
33
34 public class MaxAdvanceIsMax {
35
36 private static boolean debug = true;
37
38 private static Font[] fonts;
39
40 private static final class AntialiasHint {
41 private Object aaHint;
42 private String asString = "";
43
44 AntialiasHint(Object aaHint) {
45 if (aaHint.equals(
46 RenderingHints.VALUE_TEXT_ANTIALIAS_OFF)) {
47 asString += "FT_LOAD_TARGET_MONO";
48 } else if (aaHint.equals(
49 RenderingHints.VALUE_TEXT_ANTIALIAS_ON)) {
50 asString += "FT_LOAD_TARGET_NORMAL";
51 } else if (aaHint.equals(
52 RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB)) {
53 asString += "FT_LOAD_TARGET_LCD";
54 } else if (aaHint.equals(
55 RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_VRGB)) {
56 asString += "FT_LOAD_TARGET_LCD_V";
57 }
58 this.aaHint = aaHint;
59 }
60
61 public Object getHint() {
62 return aaHint;
63 }
64
65 public String toString() {
66 return asString;
67 }
68 }
69
70 private static final AntialiasHint[] antialiasHints = {
71 new AntialiasHint(RenderingHints.VALUE_TEXT_ANTIALIAS_OFF),
72 new AntialiasHint(RenderingHints.VALUE_TEXT_ANTIALIAS_ON),
73 new AntialiasHint(RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_HRGB),
74 new AntialiasHint(RenderingHints.VALUE_TEXT_ANTIALIAS_LCD_VRGB)
75 };
76
77 private static final class StyleAndSize {
78 int style;
79 float size;
80 public StyleAndSize(int style, float size) {
81 this.style = style;
82 this.size = size;
83 }
84 };
85
86 private static final StyleAndSize[] stylesAndSizes = new StyleAndSize[] {
87 new StyleAndSize(Font.BOLD | Font.ITALIC, 1)
88 };
89
90 private static final void loadFonts() {
91 try {
92 GraphicsEnvironment e =
93 GraphicsEnvironment.getLocalGraphicsEnvironment();
94 fonts = e.getAllFonts();
95 } catch (Exception e) {}
96 }
97
98 public static void main(String[] args) throws Exception {
99 loadFonts();
100 BufferedImage bi = new BufferedImage(500, 500,
101 BufferedImage.TYPE_INT_RGB);
102 for (AntialiasHint antialiasHint : antialiasHints) {
103 for (Font f : fonts) {
104 for (StyleAndSize styleAndSize : stylesAndSizes) {
105 f = f.deriveFont(styleAndSize.style, styleAndSize.size);
106 Graphics2D g2d = bi.createGraphics();
107 g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
108 antialiasHint.getHint());
109 FontMetrics fm = g2d.getFontMetrics(f);
110 int[] width;
111 int maxWidth = -1;
112 int maxAdvance = fm.getMaxAdvance();
113 if (debug) {
114 System.out.println("Testing " + f + " in " +
115 antialiasHint);
116 System.out.println("getMaxAdvance: " + maxAdvance);
117 }
118 if (maxAdvance != -1) {
119 String failureMessage = null;
120 width = fm.getWidths();
121 for (int j = 0; j < width.length; j++) {
122 if (width[j] > maxWidth) {
123 maxWidth = width[j];
124 }
125 if (width[j] > maxAdvance) {
126 failureMessage = "FAILED: getMaxAdvance is " +
127 "not max for font: " +
128 f.toString() +
129 " getMaxAdvance(): " +
130 maxAdvance +
131 " getWidths()[" + j + "]: " +
132 width[j];
133 throw new Exception(failureMessage);
134 }
135 }
136 }
137 if (debug) {
138 System.out.println("Max char width: " + maxWidth);
139 System.out.println("PASSED");
140 System.out.println(".........................");
141 }
142 }
143 }
144 }
145 System.out.println("TEST PASS - OK");
146 }
147 }