embedder_test_context_metal.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_TESTS_EMBEDDER_TEST_CONTEXT_METAL_H_
#define FLUTTER_SHELL_PLATFORM_EMBEDDER_TESTS_EMBEDDER_TEST_CONTEXT_METAL_H_
 
#include "flutter/shell/platform/embedder/tests/embedder_test_context.h"
#include "flutter/testing/test_metal_context.h"
#include "flutter/testing/test_metal_surface.h"
 
namespace flutter {
namespace testing {
 
class EmbedderTestContextMetal : public EmbedderTestContext {
 public:
  using TestExternalTextureCallback =
      std::function<bool(int64_t texture_id,
                         size_t w,
                         size_t h,
                         FlutterMetalExternalTexture* output)>;
 
  using NextDrawableCallback =
      std::function<FlutterMetalTexture(const FlutterFrameInfo* frame_info)>;
 
  using PresentCallback = std::function<bool(int64_t texture_id)>;
 
  explicit EmbedderTestContextMetal(std::string assets_path = "");
 
  ~EmbedderTestContextMetal() override;
 
  // |EmbedderTestContext|
  EmbedderTestContextType GetContextType() const override;
 
  // |EmbedderTestContext|
  size_t GetSurfacePresentCount() const override;
 
  // |EmbedderTestContext|
  void SetupCompositor() override;
 
  void SetExternalTextureCallback(
      TestExternalTextureCallback external_texture_frame_callback);
 
  // Override the default handling for Present.
  void SetPresentCallback(PresentCallback present_callback);
 
  bool Present(int64_t texture_id);
 
  bool PopulateExternalTexture(int64_t texture_id,
                               size_t w,
                               size_t h,
                               FlutterMetalExternalTexture* output);
 
  TestMetalContext* GetTestMetalContext();
 
  TestMetalSurface* GetTestMetalSurface();
 
  // Override the default handling for GetNextDrawable.
  void SetNextDrawableCallback(NextDrawableCallback next_drawable_callback);
 
  FlutterMetalTexture GetNextDrawable(const FlutterFrameInfo* frame_info);
 
 private:
  // This allows the builder to access the hooks.
  friend class EmbedderConfigBuilder;
 
  TestExternalTextureCallback external_texture_frame_callback_ = nullptr;
  SkISize surface_size_ = SkISize::MakeEmpty();
  std::unique_ptr<TestMetalContext> metal_context_;
  std::unique_ptr<TestMetalSurface> metal_surface_;
  size_t present_count_ = 0;
  PresentCallback present_callback_ = nullptr;
  NextDrawableCallback next_drawable_callback_ = nullptr;
 
  void SetupSurface(SkISize surface_size) override;
 
  FML_DISALLOW_COPY_AND_ASSIGN(EmbedderTestContextMetal);
};
 
}  // namespace testing
}  // namespace flutter
 
#endif  // FLUTTER_SHELL_PLATFORM_EMBEDDER_TESTS_EMBEDDER_TEST_CONTEXT_METAL_H_