зеркало из https://github.com/mozilla/gecko-dev.git
92 строки
2.5 KiB
C++
92 строки
2.5 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_RemoteBackbuffer_h
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#define widget_windows_RemoteBackbuffer_h
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#include "nsIWidget.h"
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#include "mozilla/widget/PCompositorWidgetParent.h"
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#include "mozilla/Maybe.h"
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#include <thread>
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#include <windows.h>
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namespace mozilla {
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namespace widget {
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namespace remote_backbuffer {
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struct IpcRect;
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struct SharedData;
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struct BorrowResponseData;
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struct PresentRequestData;
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struct PresentResponseData;
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class SharedImage;
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class PresentableSharedImage;
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class Provider {
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public:
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Provider();
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~Provider();
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bool Initialize(HWND aWindowHandle, DWORD aTargetProcessId,
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nsTransparencyMode aTransparencyMode);
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Maybe<RemoteBackbufferHandles> CreateRemoteHandles();
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void UpdateTransparencyMode(nsTransparencyMode aTransparencyMode);
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Provider(const Provider&) = delete;
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Provider(Provider&&) = delete;
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Provider& operator=(const Provider&) = delete;
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Provider& operator=(Provider&&) = delete;
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private:
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void ThreadMain();
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void HandleBorrowRequest(BorrowResponseData* aResponseData,
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bool aAllowSameBuffer);
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void HandlePresentRequest(const PresentRequestData& aRequestData,
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PresentResponseData* aResponseData);
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HWND mWindowHandle;
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DWORD mTargetProcessId;
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HANDLE mFileMapping;
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HANDLE mRequestReadyEvent;
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HANDLE mResponseReadyEvent;
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SharedData* mSharedDataPtr;
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bool mStopServiceThread;
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std::thread mServiceThread;
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std::unique_ptr<PresentableSharedImage> mBackbuffer;
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mozilla::Atomic<nsTransparencyMode, MemoryOrdering::Relaxed>
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mTransparencyMode;
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};
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class Client {
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public:
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Client();
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~Client();
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bool Initialize(const RemoteBackbufferHandles& aRemoteHandles);
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already_AddRefed<gfx::DrawTarget> BorrowDrawTarget();
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bool PresentDrawTarget(gfx::IntRegion aDirtyRegion);
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Client(const Client&) = delete;
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Client(Client&&) = delete;
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Client& operator=(const Client&) = delete;
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Client& operator=(Client&&) = delete;
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private:
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HANDLE mFileMapping;
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HANDLE mRequestReadyEvent;
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HANDLE mResponseReadyEvent;
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SharedData* mSharedDataPtr;
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std::unique_ptr<SharedImage> mBackbuffer;
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};
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} // namespace remote_backbuffer
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} // namespace widget
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} // namespace mozilla
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#endif // widget_windows_RemoteBackbuffer_h
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