1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/ipc/SharedDIBWin.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,56 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef gfx_SharedDIBWin_h__
1.10 +#define gfx_SharedDIBWin_h__
1.11 +
1.12 +#include <windows.h>
1.13 +
1.14 +#include "SharedDIB.h"
1.15 +
1.16 +namespace mozilla {
1.17 +namespace gfx {
1.18 +
1.19 +class SharedDIBWin : public SharedDIB
1.20 +{
1.21 +public:
1.22 + SharedDIBWin();
1.23 + ~SharedDIBWin();
1.24 +
1.25 + // Allocate a new win32 dib section compatible with an hdc. The dib will
1.26 + // be selected into the hdc on return.
1.27 + nsresult Create(HDC aHdc, uint32_t aWidth, uint32_t aHeight,
1.28 + bool aTransparent);
1.29 +
1.30 + // Wrap a dib section around an existing shared memory object. aHandle should
1.31 + // point to a section large enough for the dib's memory, otherwise this call
1.32 + // will fail.
1.33 + nsresult Attach(Handle aHandle, uint32_t aWidth, uint32_t aHeight,
1.34 + bool aTransparent);
1.35 +
1.36 + // Destroy or release resources associated with this dib.
1.37 + nsresult Close();
1.38 +
1.39 + // Return the HDC of the shared dib.
1.40 + HDC GetHDC() { return mSharedHdc; }
1.41 +
1.42 + // Return the bitmap bits.
1.43 + void* GetBits() { return mBitmapBits; }
1.44 +
1.45 +private:
1.46 + HDC mSharedHdc;
1.47 + HBITMAP mSharedBmp;
1.48 + HGDIOBJ mOldObj;
1.49 + void* mBitmapBits;
1.50 +
1.51 + uint32_t SetupBitmapHeader(uint32_t aWidth, uint32_t aHeight,
1.52 + bool aTransparent, BITMAPV4HEADER *aHeader);
1.53 + nsresult SetupSurface(HDC aHdc, BITMAPV4HEADER *aHdr);
1.54 +};
1.55 +
1.56 +} // gfx
1.57 +} // mozilla
1.58 +
1.59 +#endif
