/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 GFX_ThebesLayerComposite_H
#define GFX_ThebesLayerComposite_H

#include "mozilla/layers/PLayers.h"
#include "mozilla/layers/ShadowLayers.h"

#include "Layers.h"
#include "LayerManagerComposite.h"
#include "base/task.h"


namespace mozilla {
namespace layers {

/**
 * Thebes layers use ContentHosts for their compsositable host.
 * By using different ContentHosts, ThebesLayerComposite support tiled and
 * non-tiled Thebes layers and single or double buffering.
 */

class ContentHost;

class ThebesLayerComposite : public ShadowThebesLayer,
                             public LayerComposite
{
public:
  ThebesLayerComposite(LayerManagerComposite *aManager);
  virtual ~ThebesLayerComposite();

  virtual void Disconnect() MOZ_OVERRIDE;

  virtual void SetValidRegion(const nsIntRegion& aRegion) MOZ_OVERRIDE
  {
    ShadowThebesLayer::SetValidRegion(aRegion);
  }

  virtual LayerRenderState GetRenderState() MOZ_OVERRIDE;

  CompositableHost* GetCompositableHost() MOZ_OVERRIDE;

  virtual void Destroy() MOZ_OVERRIDE;

  virtual Layer* GetLayer() MOZ_OVERRIDE;

  virtual TiledLayerComposer* AsTiledLayerComposer() MOZ_OVERRIDE;

  virtual void RenderLayer(const nsIntPoint& aOffset,
                           const nsIntRect& aClipRect) MOZ_OVERRIDE;

  virtual void CleanupResources() MOZ_OVERRIDE;

  virtual void SetCompositableHost(CompositableHost* aHost) MOZ_OVERRIDE;

  virtual LayerComposite* AsLayerComposite() MOZ_OVERRIDE { return this; }

  virtual void EnsureBuffer(CompositableType aType) MOZ_OVERRIDE;

#ifdef MOZ_LAYERS_HAVE_LOG
  virtual const char* Name() const MOZ_OVERRIDE { return "ThebesLayerComposite"; }

protected:
  virtual nsACString& PrintInfo(nsACString& aTo, const char* aPrefix) MOZ_OVERRIDE;
#endif

private:
  gfxRect GetDisplayPort();
  gfxSize GetEffectiveResolution();
  gfxRect GetCompositionBounds();

  RefPtr<ContentHost> mBuffer;
  bool mRequiresTiledProperties;
};

} /* layers */
} /* mozilla */
#endif /* GFX_ThebesLayerComposite_H */