| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef FLUTTER_COMMON_GRAPHICS_TEXTURE_H_ |
| #define FLUTTER_COMMON_GRAPHICS_TEXTURE_H_ |
| |
| #include <map> |
| |
| #include "flutter/fml/macros.h" |
| #include "flutter/fml/synchronization/waitable_event.h" |
| #include "third_party/skia/include/core/SkCanvas.h" |
| #include "third_party/skia/include/core/SkSamplingOptions.h" |
| |
| class GrDirectContext; |
| |
| namespace flutter { |
| |
| class ContextListener { |
| public: |
| ContextListener(); |
| ~ContextListener(); |
| |
| // Called from raster thread. |
| virtual void OnGrContextCreated() = 0; |
| |
| // Called from raster thread. |
| virtual void OnGrContextDestroyed() = 0; |
| |
| private: |
| FML_DISALLOW_COPY_AND_ASSIGN(ContextListener); |
| }; |
| |
| class Texture : public ContextListener { |
| public: |
| explicit Texture(int64_t id); // Called from UI or raster thread. |
| virtual ~Texture(); // Called from raster thread. |
| |
| // Called from raster thread. |
| virtual void Paint(SkCanvas& canvas, |
| const SkRect& bounds, |
| bool freeze, |
| GrDirectContext* context, |
| const SkSamplingOptions& sampling, |
| const SkPaint* paint = nullptr) = 0; |
| |
| // Called on raster thread. |
| virtual void MarkNewFrameAvailable() = 0; |
| |
| // Called on raster thread. |
| virtual void OnTextureUnregistered() = 0; |
| |
| int64_t Id() { return id_; } |
| |
| private: |
| int64_t id_; |
| FML_DISALLOW_COPY_AND_ASSIGN(Texture); |
| }; |
| |
| class TextureRegistry { |
| public: |
| TextureRegistry(); |
| |
| // Called from raster thread. |
| void RegisterTexture(const std::shared_ptr<Texture>& texture); |
| |
| // Called from raster thread. |
| void RegisterContextListener(uintptr_t id, |
| std::weak_ptr<ContextListener> image); |
| |
| // Called from raster thread. |
| void UnregisterTexture(int64_t id); |
| |
| // Called from the raster thread. |
| void UnregisterContextListener(uintptr_t id); |
| |
| // Called from raster thread. |
| std::shared_ptr<Texture> GetTexture(int64_t id); |
| |
| // Called from raster thread. |
| void OnGrContextCreated(); |
| |
| // Called from raster thread. |
| void OnGrContextDestroyed(); |
| |
| private: |
| std::map<int64_t, std::shared_ptr<Texture>> mapping_; |
| std::map<uintptr_t, std::weak_ptr<ContextListener>> images_; |
| |
| FML_DISALLOW_COPY_AND_ASSIGN(TextureRegistry); |
| }; |
| |
| } // namespace flutter |
| |
| #endif // FLUTTER_COMMON_GRAPHICS_TEXTURE_H_ |