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1 /* | 1 /* |
2 * Copyright (C) 2011 Brent Fulgham | 2 * Copyright (C) 2011 Brent Fulgham |
3 * | 3 * |
4 * This library is free software; you can redistribute it and/or | 4 * This library is free software; you can redistribute it and/or |
5 * modify it under the terms of the GNU Library General Public | 5 * modify it under the terms of the GNU Library General Public |
6 * License as published by the Free Software Foundation; either | 6 * License as published by the Free Software Foundation; either |
7 * version 2 of the License, or (at your option) any later version. | 7 * version 2 of the License, or (at your option) any later version. |
8 * | 8 * |
9 * This library is distributed in the hope that it will be useful, | 9 * This library is distributed in the hope that it will be useful, |
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of | 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 * Library General Public License for more details. | 12 * Library General Public License for more details. |
13 * | 13 * |
14 * You should have received a copy of the GNU Library General Public License | 14 * You should have received a copy of the GNU Library General Public License |
15 * along with this library; see the file COPYING.LIB. If not, write to | 15 * along with this library; see the file COPYING.LIB. If not, write to |
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
17 * Boston, MA 02110-1301, USA. | 17 * Boston, MA 02110-1301, USA. |
18 * | 18 * |
19 */ | 19 */ |
20 | 20 |
21 #include "config.h" | 21 #include "config.h" |
22 #include "platform/fonts/FontPlatformData.h" | 22 #include "platform/fonts/FontPlatformData.h" |
23 | 23 |
| 24 #include "SkEndian.h" |
24 #include "SkTypeface.h" | 25 #include "SkTypeface.h" |
| 26 #include "platform/fonts/FontCache.h" |
25 #include "platform/fonts/harfbuzz/HarfBuzzFace.h" | 27 #include "platform/fonts/harfbuzz/HarfBuzzFace.h" |
26 #include "wtf/HashMap.h" | 28 #include "wtf/HashMap.h" |
27 #include "wtf/text/StringHash.h" | 29 #include "wtf/text/StringHash.h" |
28 #include "wtf/text/WTFString.h" | 30 #include "wtf/text/WTFString.h" |
29 | 31 |
30 #if OS(MACOSX) | 32 #if OS(MACOSX) |
31 #include "third_party/skia/include/ports/SkTypeface_mac.h" | 33 #include "third_party/skia/include/ports/SkTypeface_mac.h" |
32 #endif | 34 #endif |
33 | 35 |
34 using namespace std; | 36 using namespace std; |
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338 } | 340 } |
339 | 341 |
340 HarfBuzzFace* FontPlatformData::harfBuzzFace() const | 342 HarfBuzzFace* FontPlatformData::harfBuzzFace() const |
341 { | 343 { |
342 if (!m_harfBuzzFace) | 344 if (!m_harfBuzzFace) |
343 m_harfBuzzFace = HarfBuzzFace::create(const_cast<FontPlatformData*>(this
), uniqueID()); | 345 m_harfBuzzFace = HarfBuzzFace::create(const_cast<FontPlatformData*>(this
), uniqueID()); |
344 | 346 |
345 return m_harfBuzzFace.get(); | 347 return m_harfBuzzFace.get(); |
346 } | 348 } |
347 | 349 |
| 350 #if !OS(MACOSX) |
| 351 unsigned FontPlatformData::hash() const |
| 352 { |
| 353 unsigned h = SkTypeface::UniqueID(m_typeface.get()); |
| 354 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)); |
| 355 |
| 356 // This memcpy is to avoid a reinterpret_cast that breaks strict-aliasing |
| 357 // rules. Memcpy is generally optimized enough so that performance doesn't |
| 358 // matter here. |
| 359 uint32_t textSizeBytes; |
| 360 memcpy(&textSizeBytes, &m_textSize, sizeof(uint32_t)); |
| 361 h ^= textSizeBytes; |
| 362 |
| 363 return h; |
| 364 } |
| 365 |
| 366 bool FontPlatformData::fontContainsCharacter(UChar32 character) |
| 367 { |
| 368 SkPaint paint; |
| 369 setupPaint(&paint); |
| 370 paint.setTextEncoding(SkPaint::kUTF32_TextEncoding); |
| 371 |
| 372 uint16_t glyph; |
| 373 paint.textToGlyphs(&character, sizeof(character), &glyph); |
| 374 return glyph; |
| 375 } |
| 376 |
| 377 #endif |
| 378 |
| 379 #if ENABLE(OPENTYPE_VERTICAL) |
| 380 PassRefPtr<OpenTypeVerticalData> FontPlatformData::verticalData() const |
| 381 { |
| 382 return FontCache::fontCache()->getVerticalData(typeface()->uniqueID(), *this
); |
| 383 } |
| 384 |
| 385 PassRefPtr<SharedBuffer> FontPlatformData::openTypeTable(uint32_t table) const |
| 386 { |
| 387 RefPtr<SharedBuffer> buffer; |
| 388 |
| 389 SkFontTableTag tag = SkEndianSwap32(table); |
| 390 const size_t tableSize = m_typeface->getTableSize(tag); |
| 391 if (tableSize) { |
| 392 Vector<char> tableBuffer(tableSize); |
| 393 m_typeface->getTableData(tag, 0, tableSize, &tableBuffer[0]); |
| 394 buffer = SharedBuffer::adoptVector(tableBuffer); |
| 395 } |
| 396 return buffer.release(); |
| 397 } |
| 398 #endif |
| 399 |
348 } // namespace blink | 400 } // namespace blink |
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