michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "mozilla/ipc/DocumentRendererParent.h"
michael@0: #include "gfxImageSurface.h"
michael@0: #include "gfxPattern.h"
michael@0: #include "nsICanvasRenderingContextInternal.h"
michael@0: 
michael@0: using namespace mozilla::ipc;
michael@0: 
michael@0: DocumentRendererParent::DocumentRendererParent()
michael@0: {}
michael@0: 
michael@0: DocumentRendererParent::~DocumentRendererParent()
michael@0: {}
michael@0: 
michael@0: void DocumentRendererParent::SetCanvasContext(nsICanvasRenderingContextInternal* aCanvas,
michael@0:                                               gfxContext* ctx)
michael@0: {
michael@0:     mCanvas = aCanvas;
michael@0:     mCanvasContext = ctx;
michael@0: }
michael@0: 
michael@0: void DocumentRendererParent::DrawToCanvas(const nsIntSize& aSize,
michael@0:                                           const nsCString& aData)
michael@0: {
michael@0:     if (!mCanvas || !mCanvasContext)
michael@0:         return;
michael@0: 
michael@0:     nsRefPtr<gfxImageSurface> surf =
michael@0:         new gfxImageSurface(reinterpret_cast<uint8_t*>(const_cast<nsCString&>(aData).BeginWriting()),
michael@0:                             gfxIntSize(aSize.width, aSize.height),
michael@0:                             aSize.width * 4,
michael@0:                             gfxImageFormat::ARGB32);
michael@0:     nsRefPtr<gfxPattern> pat = new gfxPattern(surf);
michael@0: 
michael@0:     gfxRect rect(gfxPoint(0, 0), gfxSize(aSize.width, aSize.height));
michael@0:     mCanvasContext->NewPath();
michael@0:     mCanvasContext->PixelSnappedRectangleAndSetPattern(rect, pat);
michael@0:     mCanvasContext->Fill();
michael@0: 
michael@0:     // get rid of the pattern surface ref, because aData is very
michael@0:     // likely to go away shortly
michael@0:     mCanvasContext->SetColor(gfxRGBA(1,1,1,1));
michael@0: 
michael@0:     gfxRect damageRect = mCanvasContext->UserToDevice(rect);
michael@0:     mCanvas->Redraw(damageRect);
michael@0: }
michael@0: 
michael@0: bool
michael@0: DocumentRendererParent::Recv__delete__(const nsIntSize& renderedSize,
michael@0:                                        const nsCString& data)
michael@0: {
michael@0:     DrawToCanvas(renderedSize, data);
michael@0:     return true;
michael@0: }