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SVGImageLoader.cpp

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00001 /*
00002     Copyright (C) 2005, 2005 Alexander Kellett <lypanov@kde.org>
00003                   2008 Rob Buis <buis@kde.org>
00004 
00005     This file is part of the WebKit project
00006 
00007     This library is free software; you can redistribute it and/or
00008     modify it under the terms of the GNU Library General Public
00009     License as published by the Free Software Foundation; either
00010     version 2 of the License, or (at your option) any later version.
00011 
00012     This library is distributed in the hope that it will be useful,
00013     but WITHOUT ANY WARRANTY; without even the implied warranty of
00014     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015     Library General Public License for more details.
00016 
00017     You should have received a copy of the GNU Library General Public License
00018     along with this library; see the file COPYING.LIB.  If not, write to
00019     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00020     Boston, MA 02110-1301, USA.
00021 */
00022 
00023 #include "config.h"
00024 #if ENABLE(SVG)
00025 
00026 #include "Attr.h"
00027 #include "DocLoader.h"
00028 #include "Document.h"
00029 
00030 #include "SVGImageElement.h"
00031 #include "SVGLength.h"
00032 #include "SVGNames.h"
00033 
00034 #include "RenderImage.h"
00035 
00036 namespace WebCore {
00037 
00038 SVGImageLoader::SVGImageLoader(SVGImageElement* node)
00039     : HTMLImageLoader(node)
00040 {
00041 }
00042 
00043 SVGImageLoader::~SVGImageLoader()
00044 {
00045 }
00046 
00047 // FIXME - Refactor most of this code into WebCore::HTMLImageLoader or a shared WebCore::ImageLoader base class
00048 void SVGImageLoader::updateFromElement()
00049 {
00050     SVGImageElement *imageElement = static_cast<SVGImageElement *>(element());
00051     WebCore::Document* doc = imageElement->ownerDocument();
00052     
00053     CachedImage *newImage = 0;
00054     if (!imageElement->href().isEmpty()) {
00055         KURL uri = imageElement->baseURI();
00056         if (!uri.isEmpty())
00057             uri = KURL(uri, imageElement->href());
00058         else
00059             uri = KURL(imageElement->href());
00060         newImage = doc->docLoader()->requestImage(uri.string());
00061     }
00062 
00063     CachedImage* oldImage = image();
00064     if (newImage != oldImage) {
00065         setLoadingImage(newImage);
00066         if (newImage)
00067             newImage->addClient(this);
00068         if (oldImage)
00069             oldImage->removeClient(this);
00070     }
00071 
00072     if (RenderImage* renderer = static_cast<RenderImage*>(imageElement->renderer()))
00073         renderer->resetAnimation();
00074 }
00075 
00076 void SVGImageLoader::dispatchLoadEvent()
00077 {
00078     if (!haveFiredLoadEvent() && image()) {
00079         setHaveFiredLoadEvent(true);
00080         if (image()->errorOccurred()) {
00081             // FIXME: We're supposed to put the document in an "error state" per the spec.
00082         } else if (static_cast<SVGImageElement*>(element())->externalResourcesRequiredBaseValue())
00083             static_cast<SVGElement*>(element())->sendSVGLoadEventIfPossible(true);
00084     }
00085 }
00086 
00087 }
00088 
00089 #endif // ENABLE(SVG)

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