/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef mozilla_gfx_SharedDIBSurface_h #define mozilla_gfx_SharedDIBSurface_h #include "gfxImageSurface.h" #include "SharedDIBWin.h" #include <windows.h> namespace mozilla { namespace gfx { /** * A SharedDIBSurface owns an underlying SharedDIBWin. */ class SharedDIBSurface : public gfxImageSurface { public: typedef base::SharedMemoryHandle Handle; SharedDIBSurface() { } ~SharedDIBSurface() { } /** * Create this image surface backed by shared memory. */ bool Create(HDC adc, uint32_t aWidth, uint32_t aHeight, bool aTransparent); /** * Attach this surface to shared memory from another process. */ bool Attach(Handle aHandle, uint32_t aWidth, uint32_t aHeight, bool aTransparent); /** * After drawing to a surface via GDI, GDI must be flushed before the bitmap * is valid. */ void Flush() { ::GdiFlush(); } HDC GetHDC() { return mSharedDIB.GetHDC(); } nsresult ShareToProcess(base::ProcessId aTargetPid, Handle* aNewHandle) { return mSharedDIB.ShareToProcess(aTargetPid, aNewHandle); } static bool IsSharedDIBSurface(gfxASurface* aSurface); private: SharedDIBWin mSharedDIB; void InitSurface(uint32_t aWidth, uint32_t aHeight, bool aTransparent); }; } // namespace gfx } // namespace mozilla #endif // mozilla_gfx_SharedDIBSurface_h