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1 /* | |
2 * Copyright (C) 2008, 2009 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 "core/platform/graphics/SegmentedFontData.h" | |
28 | |
29 #include "core/platform/graphics/SimpleFontData.h" | |
30 #include "wtf/Assertions.h" | |
31 #include "wtf/text/WTFString.h" | |
32 | |
33 namespace WebCore { | |
34 | |
35 SegmentedFontData::~SegmentedFontData() | |
36 { | |
37 GlyphPageTreeNode::pruneTreeCustomFontData(this); | |
38 } | |
39 | |
40 const SimpleFontData* SegmentedFontData::fontDataForCharacter(UChar32 c) const | |
41 { | |
42 Vector<FontDataRange>::const_iterator end = m_ranges.end(); | |
43 for (Vector<FontDataRange>::const_iterator it = m_ranges.begin(); it != end;
++it) { | |
44 if (it->from() <= c && it->to() >= c) | |
45 return it->fontData().get(); | |
46 } | |
47 return m_ranges[0].fontData().get(); | |
48 } | |
49 | |
50 bool SegmentedFontData::containsCharacter(UChar32 c) const | |
51 { | |
52 Vector<FontDataRange>::const_iterator end = m_ranges.end(); | |
53 for (Vector<FontDataRange>::const_iterator it = m_ranges.begin(); it != end;
++it) { | |
54 if (c >= it->from() && c <= it->to()) | |
55 return true; | |
56 } | |
57 return false; | |
58 } | |
59 | |
60 bool SegmentedFontData::containsCharacters(const UChar* characters, int length)
const | |
61 { | |
62 UChar32 c; | |
63 for (int i = 0; i < length; ) { | |
64 U16_NEXT(characters, i, length, c) | |
65 if (!containsCharacter(c)) | |
66 return false; | |
67 } | |
68 return true; | |
69 } | |
70 | |
71 bool SegmentedFontData::isCustomFont() const | |
72 { | |
73 // All segmented fonts are custom fonts. | |
74 return true; | |
75 } | |
76 | |
77 bool SegmentedFontData::isLoading() const | |
78 { | |
79 Vector<FontDataRange>::const_iterator end = m_ranges.end(); | |
80 for (Vector<FontDataRange>::const_iterator it = m_ranges.begin(); it != end;
++it) { | |
81 if (it->fontData()->isLoading()) | |
82 return true; | |
83 } | |
84 return false; | |
85 } | |
86 | |
87 // Returns true only if all of the sub fonts are loadingFallback. | |
88 bool SegmentedFontData::isLoadingFallback() const | |
89 { | |
90 Vector<FontDataRange>::const_iterator end = m_ranges.end(); | |
91 for (Vector<FontDataRange>::const_iterator it = m_ranges.begin(); it != end;
++it) { | |
92 if (!it->fontData()->isLoadingFallback()) | |
93 return false; | |
94 } | |
95 return true; | |
96 } | |
97 | |
98 bool SegmentedFontData::isSegmented() const | |
99 { | |
100 return true; | |
101 } | |
102 | |
103 #ifndef NDEBUG | |
104 String SegmentedFontData::description() const | |
105 { | |
106 return "[segmented font]"; | |
107 } | |
108 #endif | |
109 | |
110 } // namespace WebCore | |
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