1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef MINIKIN_LAYOUT_CORE_H 18 #define MINIKIN_LAYOUT_CORE_H 19 20 #include <gtest/gtest_prod.h> 21 22 #include <vector> 23 24 #include "minikin/Constants.h" 25 #include "minikin/FontFamily.h" 26 #include "minikin/Hyphenator.h" 27 #include "minikin/MinikinExtent.h" 28 #include "minikin/MinikinFont.h" 29 #include "minikin/MinikinRect.h" 30 #include "minikin/Point.h" 31 #include "minikin/Range.h" 32 #include "minikin/U16StringPiece.h" 33 34 namespace minikin { 35 36 struct MinikinPaint; 37 38 // Immutable, recycle-able layout result. 39 class LayoutPiece { 40 public: 41 LayoutPiece(const U16StringPiece& textBuf, const Range& range, bool isRtl, 42 const MinikinPaint& paint, StartHyphenEdit startHyphen, EndHyphenEdit endHyphen); 43 ~LayoutPiece(); 44 45 // Low level accessors. fontIndices()46 const std::vector<uint8_t>& fontIndices() const { return mFontIndices; } glyphIds()47 const std::vector<uint32_t>& glyphIds() const { return mGlyphIds; } points()48 const std::vector<Point>& points() const { return mPoints; } advances()49 const std::vector<float>& advances() const { return mAdvances; } advance()50 float advance() const { return mAdvance; } extent()51 const MinikinExtent& extent() const { return mExtent; } fonts()52 const std::vector<FakedFont>& fonts() const { return mFonts; } clusterCount()53 uint32_t clusterCount() const { return mClusterCount; } 54 55 // Helper accessors glyphCount()56 uint32_t glyphCount() const { return mGlyphIds.size(); } fontAt(int glyphPos)57 const FakedFont& fontAt(int glyphPos) const { return mFonts[mFontIndices[glyphPos]]; } glyphIdAt(int glyphPos)58 uint32_t glyphIdAt(int glyphPos) const { return mGlyphIds[glyphPos]; } pointAt(int glyphPos)59 const Point& pointAt(int glyphPos) const { return mPoints[glyphPos]; } clusterAt(int glyphPos)60 uint16_t clusterAt(int glyphPos) const { return mClusters[glyphPos]; } 61 getMemoryUsage()62 uint32_t getMemoryUsage() const { 63 return sizeof(uint8_t) * mFontIndices.size() + sizeof(uint32_t) * mGlyphIds.size() + 64 sizeof(Point) * mPoints.size() + sizeof(float) * mAdvances.size() + sizeof(float) + 65 sizeof(MinikinRect) + sizeof(MinikinExtent); 66 } 67 68 static MinikinRect calculateBounds(const LayoutPiece& layout, const MinikinPaint& paint); 69 70 private: 71 FRIEND_TEST(LayoutTest, doLayoutWithPrecomputedPiecesTest); 72 73 std::vector<uint8_t> mFontIndices; // per glyph 74 std::vector<uint32_t> mGlyphIds; // per glyph 75 std::vector<Point> mPoints; // per glyph 76 std::vector<uint8_t> mClusters; // per glyph 77 78 std::vector<float> mAdvances; // per code units 79 80 float mAdvance; 81 MinikinExtent mExtent; 82 uint32_t mClusterCount; 83 84 std::vector<FakedFont> mFonts; 85 }; 86 87 } // namespace minikin 88 89 #endif // MINIKIN_LAYOUT_CORE_H 90