| OLD | NEW |
|---|
| (Empty) |
| 1 /* | |
| 2 * Copyright (C) 2006, 2009, 2011 Apple Inc. All rights reserved. | |
| 3 * Copyright (C) 2007-2008 Torch Mobile Inc. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions | |
| 7 * are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * 2. Redistributions in binary form must reproduce the above copyright | |
| 12 * notice, this list of conditions and the following disclaimer in the | |
| 13 * documentation and/or other materials provided with the distribution. | |
| 14 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of | |
| 15 * its contributors may be used to endorse or promote products derived | |
| 16 * from this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY | |
| 19 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED | |
| 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE | |
| 21 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY | |
| 22 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
| 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND | |
| 25 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |
| 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 28 */ | |
| 29 | |
| 30 #ifndef GlyphBuffer_h | |
| 31 #define GlyphBuffer_h | |
| 32 | |
| 33 #include "platform/fonts/Glyph.h" | |
| 34 #include "platform/geometry/FloatPoint.h" | |
| 35 #include "platform/heap/Heap.h" | |
| 36 #include "wtf/Vector.h" | |
| 37 | |
| 38 namespace blink { | |
| 39 | |
| 40 class SimpleFontData; | |
| 41 | |
| 42 class GlyphBuffer { | |
| 43 STACK_ALLOCATED(); | |
| 44 | |
| 45 public: | |
| 46 enum class Type { Normal, TextIntercepts }; | |
| 47 explicit GlyphBuffer(Type type = Type::Normal) : m_type(type) {} | |
| 48 | |
| 49 Type type() const { return m_type; } | |
| 50 | |
| 51 bool isEmpty() const { return m_fontData.isEmpty(); } | |
| 52 unsigned size() const { | |
| 53 ASSERT(m_fontData.size() == m_glyphs.size()); | |
| 54 ASSERT(m_fontData.size() == m_offsets.size() || | |
| 55 2 * m_fontData.size() == m_offsets.size()); | |
| 56 return m_fontData.size(); | |
| 57 } | |
| 58 | |
| 59 bool hasVerticalOffsets() const { | |
| 60 // We exclusively store either horizontal/x-only ofssets -- in which case | |
| 61 // m_offsets.size == size, or vertical/xy offsets -- in which case | |
| 62 // m_offsets.size == size * 2. | |
| 63 return size() != m_offsets.size(); | |
| 64 } | |
| 65 | |
| 66 const Glyph* glyphs(unsigned from) const { | |
| 67 ASSERT(from < size()); | |
| 68 return m_glyphs.data() + from; | |
| 69 } | |
| 70 | |
| 71 // Depending on the GlyphBuffer-wide positioning mode, this either points to | |
| 72 // an array of x-only offsets for horizontal positioning ([x1, x2, ... xn]), | |
| 73 // or interleaved x,y offsets for full positioning ([x1, y1, ... xn, yn]). | |
| 74 const float* offsets(unsigned from) const { | |
| 75 ASSERT(from < size()); | |
| 76 return m_offsets.data() + (hasVerticalOffsets() ? from * 2 : from); | |
| 77 } | |
| 78 | |
| 79 const SimpleFontData* fontDataAt(unsigned index) const { | |
| 80 ASSERT(index < size()); | |
| 81 return m_fontData[index]; | |
| 82 } | |
| 83 | |
| 84 Glyph glyphAt(unsigned index) const { | |
| 85 ASSERT(index < size()); | |
| 86 return m_glyphs[index]; | |
| 87 } | |
| 88 | |
| 89 float xOffsetAt(unsigned index) const { | |
| 90 ASSERT(index < size()); | |
| 91 return hasVerticalOffsets() ? m_offsets[index * 2] : m_offsets[index]; | |
| 92 } | |
| 93 | |
| 94 float yOffsetAt(unsigned index) const { | |
| 95 ASSERT(index < size()); | |
| 96 ASSERT(hasVerticalOffsets()); | |
| 97 return m_offsets[index * 2 + 1]; | |
| 98 } | |
| 99 | |
| 100 void add(Glyph glyph, const SimpleFontData* font, float x) { | |
| 101 // cannot mix x-only/xy offsets | |
| 102 ASSERT(!hasVerticalOffsets()); | |
| 103 | |
| 104 m_fontData.push_back(font); | |
| 105 m_glyphs.push_back(glyph); | |
| 106 m_offsets.push_back(x); | |
| 107 } | |
| 108 | |
| 109 void add(Glyph glyph, const SimpleFontData* font, const FloatPoint& offset) { | |
| 110 // cannot mix x-only/xy offsets | |
| 111 ASSERT(isEmpty() || hasVerticalOffsets()); | |
| 112 | |
| 113 m_fontData.push_back(font); | |
| 114 m_glyphs.push_back(glyph); | |
| 115 m_offsets.push_back(offset.x()); | |
| 116 m_offsets.push_back(offset.y()); | |
| 117 } | |
| 118 | |
| 119 protected: | |
| 120 Vector<const SimpleFontData*, 2048> m_fontData; | |
| 121 Vector<Glyph, 2048> m_glyphs; | |
| 122 | |
| 123 // Glyph positioning: either x-only offsets, or interleaved x,y offsets | |
| 124 // (depending on the buffer-wide positioning mode). This matches the | |
| 125 // glyph positioning format used by Skia. | |
| 126 Vector<float, 2048> m_offsets; | |
| 127 | |
| 128 Type m_type; | |
| 129 }; | |
| 130 | |
| 131 } // namespace blink | |
| 132 | |
| 133 #endif | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2714413003:
Remove GlyphBuffer (Closed)
