mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-02 15:15:23 +00:00
57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
/* -*- 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, PRUint32 aWidth, PRUint32 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, PRUint32 aWidth, PRUint32 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;
|
|
|
|
PRUint32 SetupBitmapHeader(PRUint32 aWidth, PRUint32 aHeight,
|
|
bool aTransparent, BITMAPV4HEADER *aHeader);
|
|
nsresult SetupSurface(HDC aHdc, BITMAPV4HEADER *aHdr);
|
|
};
|
|
|
|
} // gfx
|
|
} // mozilla
|
|
|
|
#endif
|