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112 lines
3.8 KiB
C++
112 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef widget_windows_InProcessWinCompositorWidget_h
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#define widget_windows_InProcessWinCompositorWidget_h
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#include "WinCompositorWidget.h"
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class nsWindow;
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class gfxASurface;
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namespace mozilla::widget {
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// This is the Windows-specific implementation of CompositorWidget. For
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// the most part it only requires an HWND, however it maintains extra state
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// for transparent windows, as well as for synchronizing WM_SETTEXT messages
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// with the compositor.
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class InProcessWinCompositorWidget final
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: public WinCompositorWidget,
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public PlatformCompositorWidgetDelegate {
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public:
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InProcessWinCompositorWidget(const WinCompositorWidgetInitData& aInitData,
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const layers::CompositorOptions& aOptions,
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nsWindow* aWindow);
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bool PreRender(WidgetRenderingContext*) override;
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void PostRender(WidgetRenderingContext*) override;
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already_AddRefed<gfx::DrawTarget> StartRemoteDrawing() override;
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void EndRemoteDrawing() override;
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bool NeedsToDeferEndRemoteDrawing() override;
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LayoutDeviceIntSize GetClientSize() override;
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already_AddRefed<gfx::DrawTarget> GetBackBufferDrawTarget(
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gfx::DrawTarget* aScreenTarget, const gfx::IntRect& aRect,
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bool* aOutIsCleared) override;
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already_AddRefed<gfx::SourceSurface> EndBackBufferDrawing() override;
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bool InitCompositor(layers::Compositor* aCompositor) override;
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CompositorWidgetDelegate* AsDelegate() override { return this; }
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bool IsHidden() const override;
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// PlatformCompositorWidgetDelegate Overrides
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void EnterPresentLock() override;
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void LeavePresentLock() override;
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void OnDestroyWindow() override;
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bool OnWindowResize(const LayoutDeviceIntSize& aSize) override;
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void OnWindowModeChange(nsSizeMode aSizeMode) override;
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void UpdateTransparency(TransparencyMode aMode) override;
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void NotifyVisibilityUpdated(nsSizeMode aSizeMode,
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bool aIsFullyOccluded) override;
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void ClearTransparentWindow() override;
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bool RedrawTransparentWindow();
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// Ensure that a transparent surface exists, then return it.
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RefPtr<gfxASurface> EnsureTransparentSurface();
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HDC GetTransparentDC() const { return mMemoryDC; }
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mozilla::Mutex& GetTransparentSurfaceLock() {
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return mTransparentSurfaceLock;
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}
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nsSizeMode GetWindowSizeMode() const override;
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bool GetWindowIsFullyOccluded() const override;
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void ObserveVsync(VsyncObserver* aObserver) override;
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nsIWidget* RealWidget() override;
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void UpdateCompositorWnd(const HWND aCompositorWnd,
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const HWND aParentWnd) override;
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void SetRootLayerTreeID(const layers::LayersId& aRootLayerTreeId) override {}
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private:
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HDC GetWindowSurface();
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void FreeWindowSurface(HDC dc);
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void CreateTransparentSurface(const gfx::IntSize& aSize);
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nsWindow* mWindow;
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HWND mWnd;
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gfx::CriticalSection mPresentLock;
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// Transparency handling.
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mozilla::Mutex mTransparentSurfaceLock MOZ_UNANNOTATED;
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mozilla::Atomic<uint32_t, MemoryOrdering::Relaxed> mTransparencyMode;
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bool TransparencyModeIs(TransparencyMode aMode) const {
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return TransparencyMode(uint32_t(mTransparencyMode)) == aMode;
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}
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// Visibility handling.
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mozilla::Atomic<nsSizeMode, MemoryOrdering::Relaxed> mSizeMode;
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mozilla::Atomic<bool, MemoryOrdering::Relaxed> mIsFullyOccluded;
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RefPtr<gfxASurface> mTransparentSurface;
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HDC mMemoryDC;
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HDC mCompositeDC;
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// Locked back buffer of BasicCompositor
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uint8_t* mLockedBackBufferData;
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bool mNotDeferEndRemoteDrawing;
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};
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} // namespace mozilla::widget
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#endif // widget_windows_InProcessWinCompositorWidget_h
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