gecko/content/canvas/src/DocumentRendererParent.cpp
2009-12-15 20:33:05 -05:00

86 lines
3.3 KiB
C++

/* ***** 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 Fennec Electrolysis.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2009
* 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 ***** */
#include "mozilla/ipc/DocumentRendererParent.h"
#include "gfxImageSurface.h"
#include "gfxPattern.h"
using namespace mozilla::ipc;
DocumentRendererParent::DocumentRendererParent()
{}
DocumentRendererParent::~DocumentRendererParent()
{}
void DocumentRendererParent::SetCanvasContext(nsICanvasRenderingContextInternal* aCanvas,
gfxContext* ctx)
{
mCanvas = aCanvas;
mCanvasContext = ctx;
}
void DocumentRendererParent::DrawToCanvas(PRUint32 aWidth, PRUint32 aHeight,
const nsCString& aData)
{
if (!mCanvas || !mCanvasContext)
return;
nsRefPtr<gfxImageSurface> surf = new gfxImageSurface(reinterpret_cast<PRUint8*>(const_cast<char*>(aData.Data())),
gfxIntSize(aWidth, aHeight),
aWidth * 4,
gfxASurface::ImageFormatARGB32);
nsRefPtr<gfxPattern> pat = new gfxPattern(surf);
mCanvasContext->NewPath();
mCanvasContext->PixelSnappedRectangleAndSetPattern(gfxRect(0, 0, aWidth, aHeight), pat);
mCanvasContext->Fill();
// get rid of the pattern surface ref, because aData is very likely to go away shortly
mCanvasContext->SetColor(gfxRGBA(1,1,1,1));
gfxRect damageRect = mCanvasContext->UserToDevice(gfxRect(0, 0, aWidth, aHeight));
mCanvas->Redraw(damageRect);
}
bool
DocumentRendererParent::Recv__delete__(const PRUint32& w, const PRUint32& h,
const nsCString& data)
{
DrawToCanvas(w, h, data);
return true;
}