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| 1 /* | |
| 2 * Copyright (C) 2003, 2006, 2008, 2011 Apple Inc. All rights reserved. | |
| 3 * Copyright (C) 2008 Holger Hans Peter Freyther | |
| 4 * Copyright (C) 2014 Google Inc. All rights reserved. | |
| 5 * | |
| 6 * This library is free software; you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU Library General Public | |
| 8 * License as published by the Free Software Foundation; either | |
| 9 * version 2 of the License, or (at your option) any later version. | |
| 10 * | |
| 11 * This library is distributed in the hope that it will be useful, | |
| 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 * Library General Public License for more details. | |
| 15 * | |
| 16 * You should have received a copy of the GNU Library General Public License | |
| 17 * along with this library; see the file COPYING.LIB. If not, write to | |
| 18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
| 19 * Boston, MA 02110-1301, USA. | |
| 20 * | |
| 21 */ | |
| 22 | |
| 23 #ifndef SimpleShaper_h | |
| 24 #define SimpleShaper_h | |
| 25 | |
| 26 #include "platform/PlatformExport.h" | |
| 27 #include "platform/fonts/shaping/Shaper.h" | |
| 28 #include "platform/geometry/FloatPoint.h" | |
| 29 #include "platform/geometry/FloatRect.h" | |
| 30 #include "platform/text/TextRun.h" | |
| 31 #include "wtf/HashSet.h" | |
| 32 #include "wtf/text/Unicode.h" | |
| 33 | |
| 34 namespace blink { | |
| 35 | |
| 36 class Font; | |
| 37 class GlyphBuffer; | |
| 38 class SimpleFontData; | |
| 39 class TextRun; | |
| 40 struct GlyphData; | |
| 41 | |
| 42 struct PLATFORM_EXPORT SimpleShaper : public Shaper { | |
| 43 public: | |
| 44 SimpleShaper(const Font*, | |
| 45 const TextRun&, | |
| 46 const GlyphData* emphasisData = nullptr, | |
| 47 HashSet<const SimpleFontData*>* fallbackFonts = nullptr, | |
| 48 FloatRect* = nullptr); | |
| 49 | |
| 50 // TODO(sk.kumar): This function should be updated to take an unsigned value, | |
| 51 // and callers should be updated to not pass negative values. | |
| 52 // See: crbug.com/540047. | |
| 53 unsigned advance(int to, GlyphBuffer* = 0); | |
| 54 bool advanceOneCharacter(float& width); | |
| 55 | |
| 56 const TextRun& run() const { return m_textRun; } | |
| 57 float runWidthSoFar() const { return m_runWidthSoFar; } | |
| 58 unsigned currentOffset() { return m_currentCharacter; } | |
| 59 | |
| 60 private: | |
| 61 unsigned m_currentCharacter; | |
| 62 float m_runWidthSoFar; | |
| 63 | |
| 64 struct CharacterData { | |
| 65 STACK_ALLOCATED(); | |
| 66 UChar32 character; | |
| 67 unsigned clusterLength; | |
| 68 int characterOffset; | |
| 69 }; | |
| 70 | |
| 71 GlyphData glyphDataForCharacter(CharacterData&, bool normalizeSpace = false); | |
| 72 float characterWidth(UChar32, const GlyphData&) const; | |
| 73 float adjustSpacing(float, const CharacterData&); | |
| 74 | |
| 75 template <typename TextIterator> | |
| 76 unsigned advanceInternal(TextIterator&, GlyphBuffer*); | |
| 77 }; | |
| 78 | |
| 79 } // namespace blink | |
| 80 | |
| 81 #endif | |
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Chromium Code Reviews
Issue 1479003002:
Remove Simple Text Path (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master