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/*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MINIKIN_LAYOUT_CORE_H
#define MINIKIN_LAYOUT_CORE_H
#include <gtest/gtest_prod.h>
#include <vector>
#include "minikin/FontFamily.h"
#include "minikin/Hyphenator.h"
#include "minikin/MinikinExtent.h"
#include "minikin/MinikinFont.h"
#include "minikin/MinikinRect.h"
#include "minikin/Point.h"
#include "minikin/Range.h"
#include "minikin/U16StringPiece.h"
namespace minikin {
struct MinikinPaint;
// Immutable, recycle-able layout result.
class LayoutPiece {
public:
LayoutPiece(const U16StringPiece& textBuf, const Range& range, bool isRtl,
const MinikinPaint& paint, StartHyphenEdit startHyphen, EndHyphenEdit endHyphen);
~LayoutPiece();
// Low level accessors.
const std::vector<uint8_t>& fontIndices() const { return mFontIndices; }
const std::vector<uint32_t>& glyphIds() const { return mGlyphIds; }
const std::vector<Point>& points() const { return mPoints; }
const std::vector<float>& advances() const { return mAdvances; }
float advance() const { return mAdvance; }
const MinikinExtent& extent() const { return mExtent; }
const std::vector<FakedFont>& fonts() const { return mFonts; }
// Helper accessors
uint32_t glyphCount() const { return mGlyphIds.size(); }
const FakedFont& fontAt(int glyphPos) const { return mFonts[mFontIndices[glyphPos]]; }
uint32_t glyphIdAt(int glyphPos) const { return mGlyphIds[glyphPos]; }
const Point& pointAt(int glyphPos) const { return mPoints[glyphPos]; }
uint32_t getMemoryUsage() const {
return sizeof(uint8_t) * mFontIndices.size() + sizeof(uint32_t) * mGlyphIds.size() +
sizeof(Point) * mPoints.size() + sizeof(float) * mAdvances.size() + sizeof(float) +
sizeof(MinikinRect) + sizeof(MinikinExtent);
}
static MinikinRect calculateBounds(const LayoutPiece& layout, const MinikinPaint& paint);
private:
FRIEND_TEST(LayoutTest, doLayoutWithPrecomputedPiecesTest);
std::vector<uint8_t> mFontIndices; // per glyph
std::vector<uint32_t> mGlyphIds; // per glyph
std::vector<Point> mPoints; // per glyph
std::vector<float> mAdvances; // per code units
float mAdvance;
MinikinExtent mExtent;
std::vector<FakedFont> mFonts;
};
} // namespace minikin
#endif // MINIKIN_LAYOUT_CORE_H
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