embedder_surface_software.h

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// 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_SHELL_PLATFORM_EMBEDDER_EMBEDDER_SURFACE_SOFTWARE_H_
#define FLUTTER_SHELL_PLATFORM_EMBEDDER_EMBEDDER_SURFACE_SOFTWARE_H_
 
#include "flutter/fml/macros.h"
#include "flutter/shell/gpu/gpu_surface_software.h"
#include "flutter/shell/platform/embedder/embedder_external_view_embedder.h"
#include "flutter/shell/platform/embedder/embedder_surface.h"
 
#include "third_party/skia/include/core/SkSurface.h"
 
namespace flutter {
 
class EmbedderSurfaceSoftware final : public EmbedderSurface,
                                      public GPUSurfaceSoftwareDelegate {
 public:
  struct SoftwareDispatchTable {
    std::function<bool(const void* allocation, size_t row_bytes, size_t height)>
        software_present_backing_store;  // required
  };
 
  EmbedderSurfaceSoftware(
      SoftwareDispatchTable software_dispatch_table,
      std::shared_ptr<EmbedderExternalViewEmbedder> external_view_embedder);
 
  ~EmbedderSurfaceSoftware() override;
 
 private:
  bool valid_ = false;
  SoftwareDispatchTable software_dispatch_table_;
  sk_sp<SkSurface> sk_surface_;
  std::shared_ptr<EmbedderExternalViewEmbedder> external_view_embedder_;
 
  // |EmbedderSurface|
  bool IsValid() const override;
 
  // |EmbedderSurface|
  std::unique_ptr<Surface> CreateGPUSurface() override;
 
  // |EmbedderSurface|
  sk_sp<GrDirectContext> CreateResourceContext() const override;
 
  // |GPUSurfaceSoftwareDelegate|
  sk_sp<SkSurface> AcquireBackingStore(const SkISize& size) override;
 
  // |GPUSurfaceSoftwareDelegate|
  bool PresentBackingStore(sk_sp<SkSurface> backing_store) override;
 
  FML_DISALLOW_COPY_AND_ASSIGN(EmbedderSurfaceSoftware);
};
 
}  // namespace flutter
 
#endif  // FLUTTER_SHELL_PLATFORM_EMBEDDER_EMBEDDER_SURFACE_SOFTWARE_H_