/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=4 sw=2 sts=2 et: */
/* 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_LAYERSCOPE_H
#define GFX_LAYERSCOPE_H

#include <stdint.h>
#include <mozilla/UniquePtr.h>
#include "gfxMatrix.h"
#include "mozilla/gfx/Rect.h"

namespace mozilla {

namespace gl {
class GLContext;
}

namespace layers {

namespace layerscope {
class Packet;
}

struct EffectChain;
class LayerComposite;
class TextureHost;

class LayerScope {
 public:
  static void DrawBegin();
  static void SetRenderOffset(float aX, float aY);
  static void SetLayerTransform(const gfx::Matrix4x4& aMatrix);
  static void SetDrawRects(size_t aRects, const gfx::Rect* aLayerRects,
                           const gfx::Rect* aTextureRects);
  static void DrawEnd(gl::GLContext* aGLContext,
                      const EffectChain& aEffectChain, int aWidth, int aHeight);

  static void SendLayer(LayerComposite* aLayer, int aWidth, int aHeight);
  static void SendLayerDump(UniquePtr<layerscope::Packet> aPacket);
  static bool CheckSendable();
  static void CleanLayer();
  static void SetHWComposed();

  static void SetPixelScale(double devPixelsPerCSSPixel);
  static void ContentChanged(TextureHost* host);

 private:
  static void Init();
};

// Perform BeginFrame and EndFrame automatically
class LayerScopeAutoFrame {
 public:
  explicit LayerScopeAutoFrame(int64_t aFrameStamp);
  ~LayerScopeAutoFrame();

 private:
  static void BeginFrame(int64_t aFrameStamp);
  static void EndFrame();
};

}  // namespace layers
}  // namespace mozilla

#endif /* GFX_LAYERSCOPE_H */