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 WebCore {
39
40 #if !OS(MACOSX)
hash() const41 unsigned FontPlatformData::hash() const
42 {
43 unsigned h = SkTypeface::UniqueID(m_typeface.get());
44 h ^= 0x01010101 * ((static_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 #endif
57
58 #if ENABLE(OPENTYPE_VERTICAL)
verticalData() const59 PassRefPtr<OpenTypeVerticalData> FontPlatformData::verticalData() const
60 {
61 return FontCache::fontCache()->getVerticalData(typeface()->uniqueID(), *this);
62 }
63
openTypeTable(uint32_t table) const64 PassRefPtr<SharedBuffer> FontPlatformData::openTypeTable(uint32_t table) const
65 {
66 RefPtr<SharedBuffer> buffer;
67
68 SkFontTableTag tag = SkEndianSwap32(table);
69 const size_t tableSize = m_typeface->getTableSize(tag);
70 if (tableSize) {
71 Vector<char> tableBuffer(tableSize);
72 m_typeface->getTableData(tag, 0, tableSize, &tableBuffer[0]);
73 buffer = SharedBuffer::adoptVector(tableBuffer);
74 }
75 return buffer.release();
76 }
77 #endif
78
79 } // namespace WebCore
80