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1 /* | |
2 * Copyright (c) 2006, 2007, 2008, Google 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 are | |
6 * met: | |
7 * | |
8 * * Redistributions of source code must retain the above copyright | |
9 * notice, this list of conditions and the following disclaimer. | |
10 * * Redistributions in binary form must reproduce the above | |
11 * copyright notice, this list of conditions and the following disclaimer | |
12 * in the documentation and/or other materials provided with the | |
13 * distribution. | |
14 * * Neither the name of Google Inc. nor the names of its | |
15 * contributors may be used to endorse or promote products derived from | |
16 * this software without specific prior written permission. | |
17 * | |
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
29 */ | |
30 | |
31 #include "config.h" | |
32 #include "platform/fonts/FontPlatformData.h" | |
33 | |
34 #include "SkEndian.h" | |
35 #include "SkTypeface.h" | |
36 #include "platform/fonts/FontCache.h" | |
37 | |
38 namespace blink { | |
39 | |
40 #if !OS(MACOSX) | |
41 unsigned FontPlatformData::hash() const | |
42 { | |
43 unsigned h = SkTypeface::UniqueID(m_typeface.get()); | |
44 h ^= 0x01010101 * ((static_cast<int>(m_isHashTableDeletedValue) << 3) | (sta
tic_cast<int>(m_orientation) << 2) | (static_cast<int>(m_syntheticBold) << 1) |
static_cast<int>(m_syntheticItalic)); | |
45 | |
46 // This memcpy is to avoid a reinterpret_cast that breaks strict-aliasing | |
47 // rules. Memcpy is generally optimized enough so that performance doesn't | |
48 // matter here. | |
49 uint32_t textSizeBytes; | |
50 memcpy(&textSizeBytes, &m_textSize, sizeof(uint32_t)); | |
51 h ^= textSizeBytes; | |
52 | |
53 return h; | |
54 } | |
55 | |
56 bool FontPlatformData::fontContainsCharacter(UChar32 character) | |
57 { | |
58 SkPaint paint; | |
59 setupPaint(&paint); | |
60 paint.setTextEncoding(SkPaint::kUTF32_TextEncoding); | |
61 | |
62 uint16_t glyph; | |
63 paint.textToGlyphs(&character, sizeof(character), &glyph); | |
64 return glyph; | |
65 } | |
66 | |
67 #endif | |
68 | |
69 #if ENABLE(OPENTYPE_VERTICAL) | |
70 PassRefPtr<OpenTypeVerticalData> FontPlatformData::verticalData() const | |
71 { | |
72 return FontCache::fontCache()->getVerticalData(typeface()->uniqueID(), *this
); | |
73 } | |
74 | |
75 PassRefPtr<SharedBuffer> FontPlatformData::openTypeTable(uint32_t table) const | |
76 { | |
77 RefPtr<SharedBuffer> buffer; | |
78 | |
79 SkFontTableTag tag = SkEndianSwap32(table); | |
80 const size_t tableSize = m_typeface->getTableSize(tag); | |
81 if (tableSize) { | |
82 Vector<char> tableBuffer(tableSize); | |
83 m_typeface->getTableData(tag, 0, tableSize, &tableBuffer[0]); | |
84 buffer = SharedBuffer::adoptVector(tableBuffer); | |
85 } | |
86 return buffer.release(); | |
87 } | |
88 #endif | |
89 | |
90 } // namespace blink | |
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