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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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Chromium Code Reviews
Issue 622883002:
Merge FontPlatformDataSkia with FontPlatformData (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master