1 /*
2 * Copyright (c) 2013, 2014, 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.CompositeFontResource;
29 import com.sun.javafx.font.CompositeStrike;
30 import com.sun.javafx.font.FontStrike;
31 import com.sun.javafx.font.PGFont;
32 import com.sun.javafx.font.PrismFontFactory;
33 import com.sun.javafx.text.GlyphLayout;
34 import com.sun.javafx.text.TextRun;
35
36 class CTGlyphLayout extends GlyphLayout {
37
38 private long createCTLine(long fontRef, char[] chars, boolean rtl,
39 int start, int length) {
40 /* Use CoreText to analize the run */
41 long alloc = OS.kCFAllocatorDefault();
42 long textRef = OS.CFStringCreateWithCharacters(alloc, chars, start, length);
43 long lineRef = 0;
44 if (textRef != 0) {
45 long attributes = OS.CFDictionaryCreateMutable(alloc, 4,
46 OS.kCFTypeDictionaryKeyCallBacks(),
47 OS.kCFTypeDictionaryValueCallBacks());
48 if (attributes != 0) {
49 OS.CFDictionaryAddValue(attributes, OS.kCTFontAttributeName(), fontRef);
50 if (rtl) {
51 long paragraphStyleRef = OS.CTParagraphStyleCreate(OS.kCTWritingDirectionRightToLeft);
52 if (paragraphStyleRef != 0) {
53 OS.CFDictionaryAddValue(attributes, OS.kCTParagraphStyleAttributeName(), paragraphStyleRef);
54 OS.CFRelease(paragraphStyleRef);
55 }
56 }
57 /* Note that by default CoreText will apply kerning depending on the font*/
58 long attString = OS.CFAttributedStringCreate(alloc, textRef, attributes);
59 if (attString != 0) {
60 lineRef = OS.CTLineCreateWithAttributedString(attString);
61 OS.CFRelease(attString);
62 }
63 OS.CFRelease(attributes);
64 }
65 OS.CFRelease(textRef);
66 }
67 return lineRef;
68 }
69
70 private int getFontSlot(long runRef, CompositeFontResource fr, String name, int slot) {
71 long runAttrs = OS.CTRunGetAttributes(runRef);
72 if (runAttrs == 0) return -1;
73 long actualFont = OS.CFDictionaryGetValue(runAttrs, OS.kCTFontAttributeName());
74 if (actualFont == 0) return -1;
75
76 /* Use the display name from the kCTFontDisplayNameAttribute attribute
77 * instead of CTFontCopyDisplayName() to avoid localized names*/
78 String fontName = OS.CTFontCopyAttributeDisplayName(actualFont);
79 if (fontName == null) return -1;
80 if (!fontName.equalsIgnoreCase(name)) {
81 if (fr == null) return -1;
82 slot = fr.getSlotForFont(fontName);
83 if (PrismFontFactory.debugFonts) {
84 System.err.println("\tFallback font= "+ fontName + " slot=" + slot);
85 }
86 }
87 return slot;
88 }
89
90 public void layout(TextRun run, PGFont font, FontStrike strike, char[] text) {
91
92 int baseSlot = 0;
93 CompositeFontResource composite = null;
94 if (strike instanceof CompositeStrike) {
95 composite = (CompositeFontResource)strike.getFontResource();
96 baseSlot = getInitialSlot(composite);
97 strike = ((CompositeStrike)strike).getStrikeSlot(baseSlot);
98 }
99 float size = strike.getSize();
100 String fontName = strike.getFontResource().getFullName();
101 long fontRef = ((CTFontStrike)strike).getFontRef();
102 if (fontRef == 0) return;
103 boolean rtl = (run.getLevel() & 1) != 0;
104 long lineRef = createCTLine(fontRef, text, rtl, run.getStart(), run.getLength());
105 if (lineRef == 0) return;
106 long runs = OS.CTLineGetGlyphRuns(lineRef);
107 if (runs != 0) {
108 int glyphCount = (int)OS.CTLineGetGlyphCount(lineRef);
109 int[] glyphs = new int[glyphCount];
110 float[] positions = new float[glyphCount * 2 + 2];
111 int[] indices = new int[glyphCount];
112 long runCount = OS.CFArrayGetCount(runs);
113 int glyphStart = 0, posStart = 0, indicesStart = 0;
114 for (int i = 0; i < runCount; i++) {
115 long runRef = OS.CFArrayGetValueAtIndex(runs, i);
116 if (runRef == 0) continue;
117 int slot = getFontSlot(runRef, composite, fontName, baseSlot);
118 if (slot != -1) {
119 glyphStart += OS.CTRunGetGlyphs(runRef, slot << 24, glyphStart, glyphs);
120 } else {
121 glyphStart += OS.CTRunGetGlyphCount(runRef);
122 }
123 if (size > 0) {
124 posStart += OS.CTRunGetPositions(runRef, posStart, positions);
125 }
126 indicesStart += OS.CTRunGetStringIndices(runRef, indicesStart, indices);
127
128 }
129 if (size > 0) {
130 positions[posStart] = (float)OS.CTLineGetTypographicBounds(lineRef);
131 }
132 run.shape(glyphCount, glyphs, positions, indices);
133 }
134 OS.CFRelease(lineRef);
135 }
136 }