зеркало из https://github.com/mozilla/gecko-dev.git
91 строка
2.9 KiB
C++
91 строка
2.9 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_WinCompositorWidget_h__
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#define _widget_windows_WinCompositorWidget_h__
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#include "CompositorWidgetProxy.h"
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#include "mozilla/gfx/CriticalSection.h"
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class nsWindow;
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namespace mozilla {
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namespace widget {
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// This is the Windows-specific implementation of CompositorWidgetProxy. 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 WinCompositorWidgetProxy : public CompositorWidgetProxy
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{
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public:
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WinCompositorWidgetProxy(nsWindow* aWindow);
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bool PreRender(layers::LayerManagerComposite*) override;
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void PostRender(layers::LayerManagerComposite*) override;
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already_AddRefed<gfx::DrawTarget> StartRemoteDrawing() override;
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void EndRemoteDrawing() override;
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LayoutDeviceIntSize GetClientSize() override;
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already_AddRefed<gfx::DrawTarget> GetBackBufferDrawTarget(gfx::DrawTarget* aScreenTarget,
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const LayoutDeviceIntRect& aRect,
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const LayoutDeviceIntRect& aClearRect) override;
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already_AddRefed<gfx::SourceSurface> EndBackBufferDrawing() override;
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already_AddRefed<CompositorVsyncDispatcher> GetCompositorVsyncDispatcher() override;
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uintptr_t GetWidgetKey() override;
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nsIWidget* RealWidget() override;
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WinCompositorWidgetProxy* AsWindowsProxy() override {
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return this;
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}
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// Callbacks for nsWindow.
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void EnterPresentLock();
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void LeavePresentLock();
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void OnDestroyWindow();
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// Transparency handling.
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void UpdateTransparency(nsTransparencyMode aMode);
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void ClearTransparentWindow();
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bool RedrawTransparentWindow();
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// Update the bounds of the transparent surface.
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void ResizeTransparentWindow(int32_t aNewWidth, int32_t aNewHeight);
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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 {
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return mMemoryDC;
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}
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HWND GetHwnd() const {
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return mWnd;
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}
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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(int32_t aWidth, int32_t aHeight);
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private:
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nsWindow* mWindow;
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uintptr_t mWidgetKey;
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HWND mWnd;
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gfx::CriticalSection mPresentLock;
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// Transparency handling.
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nsTransparencyMode mTransparencyMode;
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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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};
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} // namespace widget
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} // namespace mozilla
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#endif // _widget_windows_WinCompositorWidget_h__
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