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 <vector> 21 22 #include <gtest/gtest_prod.h> 23 24 #include "minikin/FontFamily.h" 25 #include "minikin/Hyphenator.h" 26 #include "minikin/MinikinExtent.h" 27 #include "minikin/MinikinFont.h" 28 #include "minikin/MinikinRect.h" 29 #include "minikin/Range.h" 30 #include "minikin/U16StringPiece.h" 31 32 namespace minikin { 33 34 struct MinikinPaint; 35 36 struct Point { PointPoint37 Point() : x(0), y(0) {} PointPoint38 Point(float x, float y) : x(x), y(y) {} 39 bool operator==(const Point& o) const { return x == o.x && y == o.y; } 40 float x; 41 float y; 42 }; 43 44 // Immutable, recycle-able layout result. 45 class LayoutPiece { 46 public: 47 LayoutPiece(const U16StringPiece& textBuf, const Range& range, bool isRtl, 48 const MinikinPaint& paint, StartHyphenEdit startHyphen, EndHyphenEdit endHyphen); 49 50 // Low level accessors. fontIndices()51 const std::vector<uint8_t>& fontIndices() const { return mFontIndices; } glyphIds()52 const std::vector<uint32_t>& glyphIds() const { return mGlyphIds; } points()53 const std::vector<Point>& points() const { return mPoints; } advances()54 const std::vector<float>& advances() const { return mAdvances; } advance()55 float advance() const { return mAdvance; } extent()56 const MinikinExtent& extent() const { return mExtent; } fonts()57 const std::vector<FakedFont>& fonts() const { return mFonts; } 58 59 // Helper accessors glyphCount()60 uint32_t glyphCount() const { return mGlyphIds.size(); } fontAt(int glyphPos)61 const FakedFont& fontAt(int glyphPos) const { return mFonts[mFontIndices[glyphPos]]; } glyphIdAt(int glyphPos)62 uint32_t glyphIdAt(int glyphPos) const { return mGlyphIds[glyphPos]; } pointAt(int glyphPos)63 const Point& pointAt(int glyphPos) const { return mPoints[glyphPos]; } 64 getMemoryUsage()65 uint32_t getMemoryUsage() const { 66 return sizeof(uint8_t) * mFontIndices.size() + sizeof(uint32_t) * mGlyphIds.size() + 67 sizeof(Point) * mPoints.size() + sizeof(float) * mAdvances.size() + sizeof(float) + 68 sizeof(MinikinRect) + sizeof(MinikinExtent); 69 } 70 71 private: 72 FRIEND_TEST(LayoutTest, doLayoutWithPrecomputedPiecesTest); 73 74 std::vector<uint8_t> mFontIndices; // per glyph 75 std::vector<uint32_t> mGlyphIds; // per glyph 76 std::vector<Point> mPoints; // per glyph 77 78 std::vector<float> mAdvances; // per code units 79 80 float mAdvance; 81 MinikinExtent mExtent; 82 83 std::vector<FakedFont> mFonts; 84 }; 85 86 // For gtest output 87 inline std::ostream& operator<<(std::ostream& os, const Point& p) { 88 return os << "(" << p.x << ", " << p.y << ")"; 89 } 90 } // namespace minikin 91 92 #endif // MINIKIN_LAYOUT_CORE_H 93