1 /*
2 * Copyright (c) 2013, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.javafx.font.coretext;
27
28 import com.sun.javafx.font.Disposer;
29 import com.sun.javafx.font.DisposerRecord;
30 import com.sun.javafx.font.FontStrikeDesc;
31 import com.sun.javafx.font.PrismFontFile;
32 import com.sun.javafx.font.PrismFontStrike;
33 import com.sun.javafx.geom.Path2D;
34 import com.sun.javafx.geom.transform.BaseTransform;
35
36 class CTFontFile extends PrismFontFile {
37
38 private final long cgFontRef;
39 /* Transform used for outline and bounds */
40 private final static CGAffineTransform tx = new CGAffineTransform();
41 static {
42 tx.a = 1; /* scale x */
43 tx.d = -1; /* scale y */
44 }
45
46 private static class SelfDisposerRecord implements DisposerRecord {
47 private long cgFontRef;
48
49 SelfDisposerRecord(long cgFontRef) {
50 this.cgFontRef = cgFontRef;
51 }
52
53 @Override
54 public synchronized void dispose() {
55 if (cgFontRef != 0) {
56 OS.CFRelease(cgFontRef);
57 cgFontRef = 0;
58 }
59 }
60 }
61
62 CTFontFile(String name, String filename, int fIndex, boolean register,
63 boolean embedded, boolean copy, boolean tracked) throws Exception {
64 super(name, filename, fIndex, register, embedded, copy, tracked);
65
66 if (embedded) {
67 cgFontRef = createCGFontForEmbeddedFont();
68 Disposer.addRecord(this, new SelfDisposerRecord(cgFontRef));
69 } else {
70 cgFontRef = 0;
71 }
72 }
73
74 public static boolean registerFont(String fontfile) {
75 if (fontfile == null) return false;
76 long alloc = OS.kCFAllocatorDefault();
77 boolean result = false;
78 long fileRef = OS.CFStringCreate(fontfile);
79 if (fileRef != 0) {
80 int pathStyle = OS.kCFURLPOSIXPathStyle;
81 long urlRef = OS.CFURLCreateWithFileSystemPath(alloc, fileRef, pathStyle, false);
82 if (urlRef != 0) {
83 int scope = OS.kCTFontManagerScopeProcess;
84 result = OS.CTFontManagerRegisterFontsForURL(urlRef, scope, 0);
85 OS.CFRelease(urlRef);
86 }
87 OS.CFRelease(fileRef);
88 }
89 return result;
90 }
91
92 private long createCGFontForEmbeddedFont() {
93 long cgFontRef = 0;
94 final long fileNameRef = OS.CFStringCreate(getFileName());
95 if (fileNameRef != 0) {
96 final long url = OS.CFURLCreateWithFileSystemPath(
97 OS.kCFAllocatorDefault(), fileNameRef,
98 OS.kCFURLPOSIXPathStyle, false);
99 if (url != 0) {
100 final long dataProvider = OS.CGDataProviderCreateWithURL(url);
101 if (dataProvider != 0) {
102 cgFontRef = OS.CGFontCreateWithDataProvider(dataProvider);
103 OS.CFRelease(dataProvider);
104 }
105 OS.CFRelease(url);
106 }
107 OS.CFRelease(fileNameRef);
108 }
109 return cgFontRef;
110 }
111
112 long getCGFontRef() {
113 return cgFontRef;
114 }
115
116 CGRect getBBox(int gc, float size) {
117 CTFontStrike strike = (CTFontStrike)getStrike(size, BaseTransform.IDENTITY_TRANSFORM);
118 long fontRef = strike.getFontRef();
119 if (fontRef == 0) return null;
120 long pathRef = OS.CTFontCreatePathForGlyph(fontRef, (short)gc, tx);
121 if (pathRef == 0) return null;
122 CGRect rect = OS.CGPathGetPathBoundingBox(pathRef);
123 OS.CGPathRelease(pathRef);
124 return rect;
125 }
126
127 Path2D getGlyphOutline(int gc, float size) {
128 CTFontStrike strike = (CTFontStrike)getStrike(size, BaseTransform.IDENTITY_TRANSFORM);
129 long fontRef = strike.getFontRef();
130 if (fontRef == 0) return null;
131 long pathRef = OS.CTFontCreatePathForGlyph(fontRef, (short)gc, tx);
132 if (pathRef == 0) return null;
133 Path2D path = OS.CGPathApply(pathRef);
134 OS.CGPathRelease(pathRef);
135 return path;
136 }
137
138 @Override protected int[] createGlyphBoundingBox(int gc) {
139 float size = 12;
140 CTFontStrike strike = (CTFontStrike)getStrike(size,
141 BaseTransform.IDENTITY_TRANSFORM);
142
143 long fontRef = strike.getFontRef();
144 if (fontRef == 0) return null;
145 int[] bb = new int[4];
146
147 /* For some reason CTFontGetBoundingRectsForGlyphs has poor performance.
148 * The fix is to use the 'loca' and the 'glyf' tables to determine
149 * the glyph bounding box (same as T2K). This implementation
150 * uses native code to read these tables since they can be large.
151 * In case it fails, or the font doesn't have a glyph table
152 * (CFF fonts), then the bounds of the glyph outline is used instead.
153 */
154 if (!isCFF()) {
155 short format = getIndexToLocFormat();
156 if (OS.CTFontGetBoundingRectForGlyphUsingTables(fontRef, (short)gc, format, bb)) {
157 return bb;
158 }
159 }
160 /* Note: not using tx here as the bounds need to be y up */
161 long pathRef = OS.CTFontCreatePathForGlyph(fontRef, (short)gc, null);
162 if (pathRef == 0) return null;
163 CGRect rect = OS.CGPathGetPathBoundingBox(pathRef);
164 OS.CGPathRelease(pathRef);
165 float scale = getUnitsPerEm() / size;
166 bb[0] = (int)(Math.round(rect.origin.x * scale));
167 bb[1] = (int)(Math.round(rect.origin.y * scale));
168 bb[2] = (int)(Math.round((rect.origin.x + rect.size.width) * scale));
169 bb[3] = (int)(Math.round((rect.origin.y + rect.size.height) * scale));
170 return bb;
171 }
172
173 @Override
174 protected PrismFontStrike<CTFontFile> createStrike(float size,
175 BaseTransform transform, int aaMode, FontStrikeDesc desc) {
176 return new CTFontStrike(this, size, transform, aaMode, desc);
177 }
178
179 }