gfx/layers/ShareableCanvasRenderer.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   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_SHAREABLECANVASRENDERER_H
   8 #define GFX_SHAREABLECANVASRENDERER_H
   9
  10 #include "CompositorTypes.h"
  11 #include "CanvasRenderer.h"
  12 #include "mozilla/layers/CanvasClient.h"
  13
  14 namespace mozilla {
  15 namespace gl {
  16 class SurfaceFactory;
  17 }  // namespace gl
  18
  19 namespace gfx {
  20 class DrawTarget;
  21 }  // namespace gfx
  22
  23 namespace layers {
  24
  25 class ShareableCanvasRenderer : public CanvasRenderer {
  26   friend class CanvasClient2D;
  27   friend class CanvasClientSharedSurface;
  28
  29  protected:
  30   RefPtr<CanvasClient> mCanvasClient;
  31
  32  private:
  33   layers::SurfaceDescriptor mFrontBufferDesc;
  34   RefPtr<TextureClient> mFrontBufferFromDesc;
  35
  36  public:
  37   ShareableCanvasRenderer();
  38   virtual ~ShareableCanvasRenderer();
  39
  40  public:
  41   void Initialize(const CanvasRendererData&) override;
  42
  43   virtual CompositableForwarder* GetForwarder() = 0;
  44
  45   virtual bool CreateCompositable() = 0;
  46
  47   void ClearCachedResources() override;
  48   void DisconnectClient() override;
  49
  50   void UpdateCompositableClient();
  51
  52   CanvasClient* GetCanvasClient() { return mCanvasClient; }
  53
  54  private:
  55   RefPtr<TextureClient> GetFrontBufferFromDesc(const layers::SurfaceDescriptor&,
  56                                                TextureFlags);
  57 };
  58
  59 }  // namespace layers
  60 }  // namespace mozilla
  61
  62 #endif