sky/shell/platform_view.h

// Copyright 2015 The Chromium 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 SKY_SHELL_PLATFORM_VIEW_H_
#define SKY_SHELL_PLATFORM_VIEW_H_

#include <memory>

#include "lib/ftl/macros.h"
#include "lib/ftl/memory/weak_ptr.h"
#include "lib/ftl/synchronization/waitable_event.h"
#include "flutter/sky/shell/shell.h"
#include "flutter/sky/shell/ui_delegate.h"
#include "flutter/sky/shell/ui/engine.h"
#include "third_party/skia/include/core/SkSize.h"
#include "third_party/skia/include/gpu/GrContext.h"

namespace sky {
namespace shell {

class Rasterizer;

class PlatformView {
 public:
  struct Config {
    Config();

    ~Config();

    ftl::WeakPtr<UIDelegate> ui_delegate;
    Rasterizer* rasterizer;
    ftl::RefPtr<ftl::TaskRunner> ui_task_runner;
  };

  struct SurfaceConfig {
    uint8_t red_bits = 8;
    uint8_t green_bits = 8;
    uint8_t blue_bits = 8;
    uint8_t alpha_bits = 8;
    uint8_t depth_bits = 0;
    uint8_t stencil_bits = 8;
  };

  void SetupResourceContextOnIOThread();

  virtual ~PlatformView();

  void ConnectToEngine(mojo::InterfaceRequest<SkyEngine> request);

  void NotifyCreated();

  void NotifyCreated(ftl::Closure continuation);

  void NotifyDestroyed();

  virtual ftl::WeakPtr<sky::shell::PlatformView> GetWeakViewPtr() = 0;

  virtual uint64_t DefaultFramebuffer() const = 0;

  virtual bool ContextMakeCurrent() = 0;

  virtual bool ResourceContextMakeCurrent() = 0;

  virtual bool SwapBuffers() = 0;

  virtual SkISize GetSize();

  virtual void Resize(const SkISize& size);

  Engine& engine() { return *engine_; }

 protected:
  Config config_;
  SurfaceConfig surface_config_;

  std::unique_ptr<Rasterizer> rasterizer_;
  std::unique_ptr<Engine> engine_;

  SkISize size_;

  explicit PlatformView();

  void SetupResourceContextOnIOThreadPerform(
      ftl::AutoResetWaitableEvent* event);

 private:
  FTL_DISALLOW_COPY_AND_ASSIGN(PlatformView);
};

}  // namespace shell
}  // namespace sky

#endif  // SKY_SHELL_PLATFORM_VIEW_H_