gfx/layers/LayerScope.h

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=4 sw=2 sts=2 et: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef GFX_LAYERSCOPE_H
   8 #define GFX_LAYERSCOPE_H
   9
  10 #include <stdint.h>
  11 #include <mozilla/UniquePtr.h>
  12 #include "gfxMatrix.h"
  13 #include "mozilla/gfx/Rect.h"
  14
  15 namespace mozilla {
  16
  17 namespace gl {
  18 class GLContext;
  19 }
  20
  21 namespace layers {
  22
  23 namespace layerscope {
  24 class Packet;
  25 }
  26
  27 struct EffectChain;
  28 class LayerComposite;
  29 class TextureHost;
  30
  31 class LayerScope {
  32  public:
  33   static void DrawBegin();
  34   static void SetRenderOffset(float aX, float aY);
  35   static void SetLayerTransform(const gfx::Matrix4x4& aMatrix);
  36   static void SetDrawRects(size_t aRects, const gfx::Rect* aLayerRects,
  37                            const gfx::Rect* aTextureRects);
  38   static void DrawEnd(gl::GLContext* aGLContext,
  39                       const EffectChain& aEffectChain, int aWidth, int aHeight);
  40
  41   static void SendLayer(LayerComposite* aLayer, int aWidth, int aHeight);
  42   static void SendLayerDump(UniquePtr<layerscope::Packet> aPacket);
  43   static bool CheckSendable();
  44   static void CleanLayer();
  45   static void SetHWComposed();
  46
  47   static void SetPixelScale(double devPixelsPerCSSPixel);
  48   static void ContentChanged(TextureHost* host);
  49
  50  private:
  51   static void Init();
  52 };
  53
  54 // Perform BeginFrame and EndFrame automatically
  55 class LayerScopeAutoFrame final {
  56  public:
  57   explicit LayerScopeAutoFrame(int64_t aFrameStamp);
  58   ~LayerScopeAutoFrame();
  59
  60  private:
  61   static void BeginFrame(int64_t aFrameStamp);
  62   static void EndFrame();
  63 };
  64
  65 }  // namespace layers
  66 }  // namespace mozilla
  67
  68 #endif /* GFX_LAYERSCOPE_H */