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// Copyright 2016 Google Inc. All Rights Reserved.
//
// 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 COBALT_RENDERER_RASTERIZER_SKIA_HARFBUZZ_FONT_H_
#define COBALT_RENDERER_RASTERIZER_SKIA_HARFBUZZ_FONT_H_
#include <map>
#include "cobalt/renderer/rasterizer/skia/font.h"
#include "third_party/harfbuzz-ng/src/hb.h"
namespace cobalt {
namespace renderer {
namespace rasterizer {
namespace skia {
class HarfBuzzFontProvider {
public:
// Returns the HarfBuzz font that corresponds to the given Skia font.
hb_font_t* GetHarfBuzzFont(Font* skia_font);
void PurgeCaches();
private:
// Wrapper class for a HarfBuzz face created from a given Skia face.
class HarfBuzzFace {
public:
HarfBuzzFace();
~HarfBuzzFace();
void Init(SkTypeface* skia_face);
hb_face_t* get();
private:
hb_face_t* face_;
};
std::map<SkFontID, HarfBuzzFace> face_cache_;
};
} // namespace skia
} // namespace rasterizer
} // namespace renderer
} // namespace cobalt
#endif // COBALT_RENDERER_RASTERIZER_SKIA_HARFBUZZ_FONT_H_