1 /*
2 * Copyright (c) 2004, 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 4328745 5090704
27 @summary exercise getLayoutFlags, getGlyphCharIndex, getGlyphCharIndices
28 */
29
30 import java.awt.*;
31 import java.awt.event.*;
32 import java.awt.font.*;
33 import java.awt.geom.*;
34
35 public class TestLayoutFlags {
36
37 static public void main(String[] args) {
38 new TestLayoutFlags().runTest();
39 }
40
41 void runTest() {
42
43 Font font = new Font("Lucida Sans", Font.PLAIN, 24);
44
45 String latin1 = "This is a latin1 string"; // none
46 String hebrew = "\u05d0\u05d1\u05d2\u05d3"; // rtl
47 String arabic = "\u0646\u0644\u0622\u0646"; // rtl + mc/g
48 String hindi = "\u0939\u093f\u0923\u094d\u0921\u0940"; // ltr + reorder
49 // String tamil = "\u0b9c\u0bcb"; // ltr + mg/c + split
50
51 FontRenderContext frc = new FontRenderContext(null, true, true);
52
53 // get glyph char indices needs to initializes layoutFlags before use (5090704)
54 {
55 GlyphVector gv = font.createGlyphVector(frc, "abcde");
56 int ix = gv.getGlyphCharIndex(0);
57 if (ix != 0) {
58 throw new Error("glyph 0 incorrectly mapped to char " + ix);
59 }
60 int[] ixs = gv.getGlyphCharIndices(0, gv.getNumGlyphs(), null);
61 for (int i = 0; i < ixs.length; ++i) {
62 if (ixs[i] != i) {
63 throw new Error("glyph " + i + " incorrectly mapped to char " + ixs[i]);
64 }
65 }
66 }
67
68 GlyphVector latinGV = makeGlyphVector("Lucida Sans", frc, latin1, false, 1 /* ScriptRun.LATIN */);
69 GlyphVector hebrewGV = makeGlyphVector("Lucida Sans", frc, hebrew, true, 5 /* ScriptRun.HEBREW */);
70 GlyphVector arabicGV = makeGlyphVector("Lucida Sans", frc, arabic, true, 6 /* ScriptRun.ARABIC */);
71 GlyphVector hindiGV = makeGlyphVector("Lucida Sans", frc, hindi, false, 7 /* ScriptRun.DEVANAGARI */);
72 // GlyphVector tamilGV = makeGlyphVector("Devanagari MT for IBM", frc, tamil, false, 12 /* ScriptRun.TAMIL */);
73
74 GlyphVector latinPos = font.createGlyphVector(frc, latin1);
75 Point2D pt = latinPos.getGlyphPosition(0);
76 pt.setLocation(pt.getX(), pt.getY() + 1.0);
77 latinPos.setGlyphPosition(0, pt);
78
79 GlyphVector latinTrans = font.createGlyphVector(frc, latin1);
80 latinTrans.setGlyphTransform(0, AffineTransform.getRotateInstance(.15));
81
82 test("latin", latinGV, GlyphVector.FLAG_HAS_POSITION_ADJUSTMENTS);
83 test("hebrew", hebrewGV, GlyphVector.FLAG_RUN_RTL |
84 GlyphVector.FLAG_HAS_POSITION_ADJUSTMENTS);
85 test("arabic", arabicGV, GlyphVector.FLAG_RUN_RTL |
86 GlyphVector.FLAG_HAS_POSITION_ADJUSTMENTS);
87 test("hindi", hindiGV, GlyphVector.FLAG_COMPLEX_GLYPHS |
88 GlyphVector.FLAG_HAS_POSITION_ADJUSTMENTS);
89 // test("tamil", tamilGV, GlyphVector.FLAG_COMPLEX_GLYPHS);
90 test("pos", latinPos, GlyphVector.FLAG_HAS_POSITION_ADJUSTMENTS);
91 test("trans", latinTrans, GlyphVector.FLAG_HAS_TRANSFORMS);
92 }
93
94 GlyphVector makeGlyphVector(String fontname, FontRenderContext frc, String text, boolean rtl, int script) {
95 Font font = new Font(fontname, Font.PLAIN, 14);
96 System.out.println("asking for " + fontname + " and got " + font.getFontName());
97 int flags = rtl ? 1 : 0;
98 return font.layoutGlyphVector(frc, text.toCharArray(), 0, text.length(), flags);
99 }
100
101 void test(String name, GlyphVector gv, int expectedFlags) {
102 expectedFlags &= gv.FLAG_MASK;
103 int computedFlags = computeFlags(gv) & gv.FLAG_MASK;
104 int actualFlags = gv.getLayoutFlags() & gv.FLAG_MASK;
105
106 System.out.println("\n*** " + name + " ***");
107 System.out.println(" test flags");
108 System.out.print("expected ");
109 printFlags(expectedFlags);
110 System.out.print("computed ");
111 printFlags(computedFlags);
112 System.out.print(" actual ");
113 printFlags(actualFlags);
114
115 if (expectedFlags != actualFlags) {
116 throw new Error("layout flags in test: " + name +
117 " expected: " + Integer.toHexString(expectedFlags) +
118 " but got: " + Integer.toHexString(actualFlags));
119 }
120 }
121
122 static public void printFlags(int flags) {
123 System.out.print("flags:");
124 if ((flags & GlyphVector.FLAG_HAS_POSITION_ADJUSTMENTS) != 0) {
125 System.out.print(" pos");
126 }
127 if ((flags & GlyphVector.FLAG_HAS_TRANSFORMS) != 0) {
128 System.out.print(" trans");
129 }
130 if ((flags & GlyphVector.FLAG_RUN_RTL) != 0) {
131 System.out.print(" rtl");
132 }
133 if ((flags & GlyphVector.FLAG_COMPLEX_GLYPHS) != 0) {
134 System.out.print(" complex");
135 }
136 if ((flags & GlyphVector.FLAG_MASK) == 0) {
137 System.out.print(" none");
138 }
139 System.out.println();
140 }
141
142 int computeFlags(GlyphVector gv) {
143 validateCharIndexMethods(gv);
144
145 int result = 0;
146 if (glyphsAreRTL(gv)) {
147 result |= GlyphVector.FLAG_RUN_RTL;
148 }
149 if (hasComplexGlyphs(gv)) {
150 result |= GlyphVector.FLAG_COMPLEX_GLYPHS;
151 }
152
153 return result;
154 }
155
156 /**
157 * throw an exception if getGlyphCharIndices returns a different result than
158 * you get from iterating through getGlyphCharIndex one at a time.
159 */
160 void validateCharIndexMethods(GlyphVector gv) {
161 int[] indices = gv.getGlyphCharIndices(0, gv.getNumGlyphs(), null);
162 for (int i = 0; i < gv.getNumGlyphs(); ++i) {
163 if (gv.getGlyphCharIndex(i) != indices[i]) {
164 throw new Error("glyph index mismatch at " + i);
165 }
166 }
167 }
168
169 /**
170 * Return true if the glyph indices are pure ltr
171 */
172 boolean glyphsAreLTR(GlyphVector gv) {
173 int[] indices = gv.getGlyphCharIndices(0, gv.getNumGlyphs(), null);
174 for (int i = 0; i < indices.length; ++i) {
175 if (indices[i] != i) {
176 return false;
177 }
178 }
179 return true;
180 }
181
182 /**
183 * Return true if the glyph indices are pure rtl
184 */
185 boolean glyphsAreRTL(GlyphVector gv) {
186 int[] indices = gv.getGlyphCharIndices(0, gv.getNumGlyphs(), null);
187 for (int i = 0; i < indices.length; ++i) {
188 if (indices[i] != indices.length - i - 1) {
189 return false;
190 }
191 }
192 return true;
193 }
194
195 /**
196 * Return true if there is a local reordering (the run is not ltr or rtl).
197 * !!! We can't have mixed bidi runs in the glyphs.
198 */
199 boolean hasComplexGlyphs(GlyphVector gv) {
200 return !glyphsAreLTR(gv) && !glyphsAreRTL(gv);
201 }
202 }
203
204 /*
205 rect getPixelBounds(frc, x, y)
206 rect getGlyphPixelBounds(frc, int, x, y)
207 getGlyphOutline(int index, x, y)
208 getGlyphInfo()
209 */