gecko-dev/gfx/ipc/SharedDIBSurface.h
Neil Rashbrook 3678727236 Fix DOS line endings rs=joedrew!
DONTBUILD
2011-05-26 20:41:33 +01:00

95 lines
3.1 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Firefox.
*
* The Initial Developer of the Original Code is
* the Mozilla Foundation <http://www.mozilla.org>.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#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, PRUint32 aWidth, PRUint32 aHeight, bool aTransparent);
/**
* Attach this surface to shared memory from another process.
*/
bool Attach(Handle aHandle, PRUint32 aWidth, PRUint32 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::ProcessHandle aChildProcess, Handle* aChildHandle) {
return mSharedDIB.ShareToProcess(aChildProcess, aChildHandle);
}
static bool IsSharedDIBSurface(gfxASurface* aSurface);
private:
SharedDIBWin mSharedDIB;
void InitSurface(PRUint32 aWidth, PRUint32 aHeight, bool aTransparent);
};
} // namespace gfx
} // namespace mozilla
#endif // mozilla_gfx_SharedDIBSurface_h