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/* -*- 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
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