/* -*- 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 gfx_SharedDIBWin_h__ #define gfx_SharedDIBWin_h__ #include <windows.h> #include "SharedDIB.h" namespace mozilla { namespace gfx { class SharedDIBWin : public SharedDIB { public: SharedDIBWin(); ~SharedDIBWin(); // Allocate a new win32 dib section compatible with an hdc. The dib will // be selected into the hdc on return. nsresult Create(HDC aHdc, uint32_t aWidth, uint32_t aHeight, bool aTransparent); // Wrap a dib section around an existing shared memory object. aHandle should // point to a section large enough for the dib's memory, otherwise this call // will fail. nsresult Attach(Handle aHandle, uint32_t aWidth, uint32_t aHeight, bool aTransparent); // Destroy or release resources associated with this dib. nsresult Close(); // Return the HDC of the shared dib. HDC GetHDC() { return mSharedHdc; } // Return the bitmap bits. void* GetBits() { return mBitmapBits; } private: HDC mSharedHdc; HBITMAP mSharedBmp; HGDIOBJ mOldObj; void* mBitmapBits; uint32_t SetupBitmapHeader(uint32_t aWidth, uint32_t aHeight, bool aTransparent, BITMAPV4HEADER *aHeader); nsresult SetupSurface(HDC aHdc, BITMAPV4HEADER *aHdr); }; } // gfx } // mozilla #endif