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.FontStrikeDesc;
29 import com.sun.javafx.font.PrismFontFile;
30 import com.sun.javafx.font.PrismFontStrike;
31 import com.sun.javafx.geom.Path2D;
32 import com.sun.javafx.geom.transform.BaseTransform;
33
34 class CTFontFile extends PrismFontFile {
35
36 /* Transform used for outline and bounds */
37 private final static CGAffineTransform tx = new CGAffineTransform();
38 static {
39 tx.a = 1; /* scale x */
40 tx.d = -1; /* scale y */
41 }
42
43 CTFontFile(String name, String filename, int fIndex, boolean register,
44 boolean embedded, boolean copy, boolean tracked) throws Exception {
45 super(name, filename, fIndex, register, embedded, copy, tracked);
46 }
47
48 public static boolean registerFont(String fontfile) {
49 if (fontfile == null) return false;
50 long alloc = OS.kCFAllocatorDefault();
51 boolean result = false;
52 long fileRef = OS.CFStringCreate(fontfile);
53 if (fileRef != 0) {
54 int pathStyle = OS.kCFURLPOSIXPathStyle;
55 long urlRef = OS.CFURLCreateWithFileSystemPath(alloc, fileRef, pathStyle, false);
56 if (urlRef != 0) {
57 int scope = OS.kCTFontManagerScopeProcess;
58 result = OS.CTFontManagerRegisterFontsForURL(urlRef, scope, 0);
59 OS.CFRelease(urlRef);
60 }
61 OS.CFRelease(fileRef);
62 }
63 return result;
64 }
65
66 CGRect getBBox(int gc, float size) {
67 CTFontStrike strike = (CTFontStrike)getStrike(size, BaseTransform.IDENTITY_TRANSFORM);
68 long fontRef = strike.getFontRef();
69 if (fontRef == 0) return null;
70 long pathRef = OS.CTFontCreatePathForGlyph(fontRef, (short)gc, tx);
71 if (pathRef == 0) return null;
72 CGRect rect = OS.CGPathGetPathBoundingBox(pathRef);
73 OS.CGPathRelease(pathRef);
74 return rect;
75 }
76
77 Path2D getGlyphOutline(int gc, float size) {
78 CTFontStrike strike = (CTFontStrike)getStrike(size, BaseTransform.IDENTITY_TRANSFORM);
79 long fontRef = strike.getFontRef();
80 if (fontRef == 0) return null;
81 long pathRef = OS.CTFontCreatePathForGlyph(fontRef, (short)gc, tx);
82 if (pathRef == 0) return null;
83 Path2D path = OS.CGPathApply(pathRef);
84 OS.CGPathRelease(pathRef);
85 return path;
86 }
87
88 @Override protected int[] createGlyphBoundingBox(int gc) {
89 float size = 12;
90 CTFontStrike strike = (CTFontStrike)getStrike(size,
91 BaseTransform.IDENTITY_TRANSFORM);
92
93 long fontRef = strike.getFontRef();
94 if (fontRef == 0) return null;
95 int[] bb = new int[4];
96
97 /* For some reason CTFontGetBoundingRectsForGlyphs has poor performance.
98 * The fix is to use the 'loca' and the 'glyf' tables to determine
99 * the glyph bounding box (same as T2K). This implementation
100 * uses native code to read these tables since they can be large.
101 * In case it fails, or the font doesn't have a glyph table
102 * (CFF fonts), then the bounds of the glyph outline is used instead.
103 */
104 if (!isCFF()) {
105 short format = getIndexToLocFormat();
106 if (OS.CTFontGetBoundingRectForGlyphUsingTables(fontRef, (short)gc, format, bb)) {
107 return bb;
108 }
109 }
110 /* Note: not using tx here as the bounds need to be y up */
111 long pathRef = OS.CTFontCreatePathForGlyph(fontRef, (short)gc, null);
112 if (pathRef == 0) return null;
113 CGRect rect = OS.CGPathGetPathBoundingBox(pathRef);
114 OS.CGPathRelease(pathRef);
115 float scale = getUnitsPerEm() / size;
116 bb[0] = (int)(Math.round(rect.origin.x * scale));
117 bb[1] = (int)(Math.round(rect.origin.y * scale));
118 bb[2] = (int)(Math.round((rect.origin.x + rect.size.width) * scale));
119 bb[3] = (int)(Math.round((rect.origin.y + rect.size.height) * scale));
120 return bb;
121 }
122
123 @Override
124 protected PrismFontStrike<CTFontFile> createStrike(float size,
125 BaseTransform transform, int aaMode, FontStrikeDesc desc) {
126 return new CTFontStrike(this, size, transform, aaMode, desc);
127 }
128
129 }