/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_gfx_layers_mlgpu_ContainerLayerMLGPU_h

#define mozilla_gfx_layers_mlgpu_ContainerLayerMLGPU_h

#include "LayerMLGPU.h"

#include "MLGDeviceTypes.h"

namespace mozilla {

namespace layers {

class MLGDevice;

class RenderViewMLGPU;

class ContainerLayerMLGPU final : public ContainerLayer

                                , public LayerMLGPU

{

public:

  explicit ContainerLayerMLGPU(LayerManagerMLGPU* aManager);

  ~ContainerLayerMLGPU() override;

  MOZ_LAYER_DECL_NAME("ContainerLayerMLGPU", TYPE_CONTAINER)

  HostLayer* AsHostLayer() override { return this; }

  ContainerLayerMLGPU* AsContainerLayerMLGPU() override { return this; }

  Layer* GetLayer() override { return this; }

  void ComputeEffectiveTransforms(const gfx::Matrix4x4& aTransformToSurface) override {

    DefaultComputeEffectiveTransforms(aTransformToSurface);

  }

  void SetInvalidCompositeRect(const gfx::IntRect* aRect) override;

  void ClearCachedResources() override;

  const LayerIntRegion& GetShadowVisibleRegion() override;

  RefPtr<MLGRenderTarget> UpdateRenderTarget(

    MLGDevice* aDevice,

    MLGRenderTargetFlags aFlags);

  MLGRenderTarget* GetRenderTarget() const {

    return mRenderTarget;

  }

  gfx::IntPoint GetTargetOffset() const {

    return mTargetOffset;

  }

  gfx::IntSize GetTargetSize() const {

    return mTargetSize;

  }

  const gfx::IntRect& GetInvalidRect() const {

    return mInvalidRect;

  }

  void ClearInvalidRect() {

    mInvalidRect.SetEmpty();

  }

  bool IsContentOpaque() override;

  bool NeedsSurfaceCopy() const {

    return mSurfaceCopyNeeded;

  }

  RenderViewMLGPU* GetRenderView() const {

    return mView;

  }

  void SetRenderView(RenderViewMLGPU* aView) {

    MOZ_ASSERT(!mView);

    mView = aView;

  }

  void ComputeIntermediateSurfaceBounds();

protected:

  bool OnPrepareToRender(FrameBuilder* aBuilder) override;

  void OnLayerManagerChange(LayerManagerMLGPU* aManager) override;

private:

  static Maybe<gfx::IntRect> FindVisibleBounds(Layer* aLayer, const Maybe<RenderTargetIntRect>& aClip);

  RefPtr<MLGRenderTarget> mRenderTarget;

  // We cache these since occlusion culling can change the visible region.

  gfx::IntPoint mTargetOffset;

  gfx::IntSize mTargetSize;

  // The region of the container that needs to be recomposited if visible. We

  // store this as a rectangle instead of an nsIntRegion for efficiency. This

  // is in layer coordinates.

  gfx::IntRect mInvalidRect;

  bool mInvalidateEntireSurface;

  bool mSurfaceCopyNeeded;

  // This is only valid for intermediate surfaces while an instance of

  // FrameBuilder is live.

  RenderViewMLGPU* mView;

};

} // namespace layers

} // namespace mozilla

#endif // mozilla_gfx_layers_mlgpu_ContainerLayerMLGPU_h