widget/windows/CompositorWidgetParent.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef widget_windows_CompositorWidgetParent_h
   7 #define widget_windows_CompositorWidgetParent_h
   8
   9 #include "WinCompositorWidget.h"
  10 #include "mozilla/Maybe.h"
  11 #include "mozilla/widget/PCompositorWidgetParent.h"
  12
  13 namespace mozilla {
  14 namespace widget {
  15
  16 enum class TransparencyMode : uint8_t;
  17
  18 namespace remote_backbuffer {
  19 class Client;
  20 }
  21
  22 class CompositorWidgetParent final : public PCompositorWidgetParent,
  23                                      public WinCompositorWidget {
  24  public:
  25   explicit CompositorWidgetParent(const CompositorWidgetInitData& aInitData,
  26                                   const layers::CompositorOptions& aOptions);
  27   ~CompositorWidgetParent() override;
  28
  29   bool Initialize(const RemoteBackbufferHandles& aRemoteHandles);
  30
  31   bool PreRender(WidgetRenderingContext*) override;
  32   void PostRender(WidgetRenderingContext*) override;
  33   already_AddRefed<gfx::DrawTarget> StartRemoteDrawingInRegion(
  34       const LayoutDeviceIntRegion& aInvalidRegion,
  35       layers::BufferMode* aBufferMode) override;
  36   void EndRemoteDrawingInRegion(
  37       gfx::DrawTarget* aDrawTarget,
  38       const LayoutDeviceIntRegion& aInvalidRegion) override;
  39   bool NeedsToDeferEndRemoteDrawing() override;
  40   LayoutDeviceIntSize GetClientSize() override;
  41   already_AddRefed<gfx::DrawTarget> GetBackBufferDrawTarget(
  42       gfx::DrawTarget* aScreenTarget, const gfx::IntRect& aRect,
  43       bool* aOutIsCleared) override;
  44   already_AddRefed<gfx::SourceSurface> EndBackBufferDrawing() override;
  45   bool InitCompositor(layers::Compositor* aCompositor) override;
  46   bool IsHidden() const override;
  47
  48   bool GetWindowIsFullyOccluded() const override;
  49
  50   mozilla::ipc::IPCResult RecvInitialize(
  51       const RemoteBackbufferHandles& aRemoteHandles) override;
  52   mozilla::ipc::IPCResult RecvEnterPresentLock() override;
  53   mozilla::ipc::IPCResult RecvLeavePresentLock() override;
  54   mozilla::ipc::IPCResult RecvNotifyVisibilityUpdated(
  55       const bool& aIsFullyOccluded) override;
  56   mozilla::ipc::IPCResult RecvUpdateTransparency(
  57       const TransparencyMode& aTransparencyMode) override;
  58   mozilla::ipc::IPCResult RecvClearTransparentWindow() override;
  59   void ActorDestroy(ActorDestroyReason aWhy) override;
  60
  61   nsIWidget* RealWidget() override;
  62   void ObserveVsync(VsyncObserver* aObserver) override;
  63   RefPtr<VsyncObserver> GetVsyncObserver() const override;
  64
  65   // PlatformCompositorWidgetDelegate Overrides
  66   void UpdateCompositorWnd(const HWND aCompositorWnd,
  67                            const HWND aParentWnd) override;
  68   void SetRootLayerTreeID(const layers::LayersId& aRootLayerTreeId) override;
  69
  70  private:
  71   RefPtr<VsyncObserver> mVsyncObserver;
  72   Maybe<layers::LayersId> mRootLayerTreeID;
  73
  74   HWND mWnd;
  75
  76   gfx::CriticalSection mPresentLock;
  77
  78   // Visibility handling.
  79   mozilla::Atomic<nsSizeMode, MemoryOrdering::Relaxed> mSizeMode;
  80   mozilla::Atomic<bool, MemoryOrdering::Relaxed> mIsFullyOccluded;
  81
  82   std::unique_ptr<remote_backbuffer::Client> mRemoteBackbufferClient;
  83 };
  84
  85 }  // namespace widget
  86 }  // namespace mozilla
  87
  88 #endif  // widget_windows_CompositorWidgetParent_h