// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_VIZ_SERVICE_DISPLAY_EMBEDDER_SOFTWARE_OUTPUT_DEVICE_OZONE_H_
#define COMPONENTS_VIZ_SERVICE_DISPLAY_EMBEDDER_SOFTWARE_OUTPUT_DEVICE_OZONE_H_

#include <memory>

#include "components/viz/service/display/software_output_device.h"
#include "components/viz/service/viz_service_export.h"
#include "ui/gfx/native_ui_types.h"

namespace ui {
class PlatformWindowSurface;
class SurfaceOzoneCanvas;
}  // namespace ui

namespace viz {

// Ozone implementation which relies on software rendering. Ozone will present
// an accelerated widget as a SkCanvas. SoftwareOutputDevice will then use the
// Ozone provided canvas to draw.
class VIZ_SERVICE_EXPORT SoftwareOutputDeviceOzone
    : public SoftwareOutputDevice {
 public:
  SoftwareOutputDeviceOzone(
      std::unique_ptr<ui::PlatformWindowSurface> platform_window_surface,
      std::unique_ptr<ui::SurfaceOzoneCanvas> surface_ozone);

  SoftwareOutputDeviceOzone(const SoftwareOutputDeviceOzone&) = delete;
  SoftwareOutputDeviceOzone& operator=(const SoftwareOutputDeviceOzone&) =
      delete;

  ~SoftwareOutputDeviceOzone() override;

  void Resize(const gfx::Size& viewport_pixel_size,
              float scale_factor) override;
  SkCanvas* BeginPaint(const gfx::Rect& damage_rect) override;
  void EndPaint() override;
  void OnSwapBuffers(SwapBuffersCallback swap_ack_callback,
                     gfx::FrameData data) override;
  int MaxFramesPending() const override;
  bool SupportsOverridePlatformSize() const override;

 private:
  // This object should outlive |surface_ozone_|. Ending its lifetime may
  // cause the platform to tear down surface resources.
  std::unique_ptr<ui::PlatformWindowSurface> platform_window_surface_;

  std::unique_ptr<ui::SurfaceOzoneCanvas> surface_ozone_;
};

}  // namespace viz

#endif  // COMPONENTS_VIZ_SERVICE_DISPLAY_EMBEDDER_SOFTWARE_OUTPUT_DEVICE_OZONE_H_