gpu_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_GPU_GPU_SURFACE_SOFTWARE_H_
#define FLUTTER_SHELL_GPU_GPU_SURFACE_SOFTWARE_H_
 
#include "flutter/flow/surface.h"
#include "flutter/fml/macros.h"
#include "flutter/fml/memory/weak_ptr.h"
#include "flutter/shell/gpu/gpu_surface_software_delegate.h"
 
namespace flutter {
 
class GPUSurfaceSoftware : public Surface {
 public:
  GPUSurfaceSoftware(GPUSurfaceSoftwareDelegate* delegate,
                     bool render_to_surface);
 
  ~GPUSurfaceSoftware() override;
 
  // |Surface|
  bool IsValid() override;
 
  // |Surface|
  std::unique_ptr<SurfaceFrame> AcquireFrame(const SkISize& size) override;
 
  // |Surface|
  SkMatrix GetRootTransformation() const override;
 
  // |Surface|
  GrDirectContext* GetContext() override;
 
 private:
  GPUSurfaceSoftwareDelegate* delegate_;
  // TODO(38466): Refactor GPU surface APIs take into account the fact that an
  // external view embedder may want to render to the root surface. This is a
  // hack to make avoid allocating resources for the root surface when an
  // external view embedder is present.
  const bool render_to_surface_;
  fml::TaskRunnerAffineWeakPtrFactory<GPUSurfaceSoftware> weak_factory_;
  FML_DISALLOW_COPY_AND_ASSIGN(GPUSurfaceSoftware);
};
 
}  // namespace flutter
 
#endif  // FLUTTER_SHELL_GPU_GPU_SURFACE_SOFTWARE_H_