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