1 /*
2 * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "CSSFontFace.h"
28
29 #include "CSSFontFaceSource.h"
30 #include "CSSFontSelector.h"
31 #include "CSSSegmentedFontFace.h"
32 #include "FontDescription.h"
33 #include "SimpleFontData.h"
34
35 namespace WebCore {
36
~CSSFontFace()37 CSSFontFace::~CSSFontFace()
38 {
39 deleteAllValues(m_sources);
40 }
41
isLoaded() const42 bool CSSFontFace::isLoaded() const
43 {
44 unsigned size = m_sources.size();
45 for (unsigned i = 0; i < size; i++) {
46 if (!m_sources[i]->isLoaded())
47 return false;
48 }
49 return true;
50 }
51
isValid() const52 bool CSSFontFace::isValid() const
53 {
54 unsigned size = m_sources.size();
55 if (!size)
56 return false;
57 for (unsigned i = 0; i < size; i++) {
58 if (m_sources[i]->isValid())
59 return true;
60 }
61 return false;
62 }
63
addedToSegmentedFontFace(CSSSegmentedFontFace * segmentedFontFace)64 void CSSFontFace::addedToSegmentedFontFace(CSSSegmentedFontFace* segmentedFontFace)
65 {
66 m_segmentedFontFaces.add(segmentedFontFace);
67 }
68
removedFromSegmentedFontFace(CSSSegmentedFontFace * segmentedFontFace)69 void CSSFontFace::removedFromSegmentedFontFace(CSSSegmentedFontFace* segmentedFontFace)
70 {
71 m_segmentedFontFaces.remove(segmentedFontFace);
72 }
73
addSource(CSSFontFaceSource * source)74 void CSSFontFace::addSource(CSSFontFaceSource* source)
75 {
76 m_sources.append(source);
77 source->setFontFace(this);
78 }
79
fontLoaded(CSSFontFaceSource * source)80 void CSSFontFace::fontLoaded(CSSFontFaceSource* source)
81 {
82 if (source != m_activeSource)
83 return;
84
85 // FIXME: Can we assert that m_segmentedFontFaces is not empty? That may
86 // require stopping in-progress font loading when the last
87 // CSSSegmentedFontFace is removed.
88 if (m_segmentedFontFaces.isEmpty())
89 return;
90
91 HashSet<CSSSegmentedFontFace*>::iterator end = m_segmentedFontFaces.end();
92 for (HashSet<CSSSegmentedFontFace*>::iterator it = m_segmentedFontFaces.begin(); it != end; ++it)
93 (*it)->fontLoaded(this);
94
95 // Use one of the CSSSegmentedFontFaces' font selector. They all have
96 // the same font selector, so it's wasteful to store it in the CSSFontFace.
97 CSSFontSelector* fontSelector = (*m_segmentedFontFaces.begin())->fontSelector();
98 fontSelector->fontLoaded();
99 }
100
getFontData(const FontDescription & fontDescription,bool syntheticBold,bool syntheticItalic)101 SimpleFontData* CSSFontFace::getFontData(const FontDescription& fontDescription, bool syntheticBold, bool syntheticItalic)
102 {
103 m_activeSource = 0;
104 if (!isValid())
105 return 0;
106
107 ASSERT(!m_segmentedFontFaces.isEmpty());
108 CSSFontSelector* fontSelector = (*m_segmentedFontFaces.begin())->fontSelector();
109
110 size_t size = m_sources.size();
111 for (size_t i = 0; i < size; ++i) {
112 if (SimpleFontData* result = m_sources[i]->getFontData(fontDescription, syntheticBold, syntheticItalic, fontSelector)) {
113 m_activeSource = m_sources[i];
114 return result;
115 }
116 }
117
118 return 0;
119 }
120
121 #if ENABLE(SVG_FONTS)
hasSVGFontFaceSource() const122 bool CSSFontFace::hasSVGFontFaceSource() const
123 {
124 for (unsigned i = 0; i < m_sources.size(); i++) {
125 if (m_sources[i]->isSVGFontFaceSource())
126 return true;
127 }
128 return false;
129 }
130 #endif
131
132 }
133
134