khtml/svg/SVGImageLoader.cpp

   1 /*
   2     Copyright (C) 2005, 2005 Alexander Kellett <lypanov@kde.org>
   3                   2008 Rob Buis <buis@kde.org>
   4
   5     This file is part of the WebKit project
   6
   7     This library is free software; you can redistribute it and/or
   8     modify it under the terms of the GNU Library General Public
   9     License as published by the Free Software Foundation; either
  10     version 2 of the License, or (at your option) any later version.
  11
  12     This library is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15     Library General Public License for more details.
  16
  17     You should have received a copy of the GNU Library General Public License
  18     along with this library; see the file COPYING.LIB.  If not, write to
  19     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20     Boston, MA 02110-1301, USA.
  21 */
  22
  23 #include "config.h"
  24 #if ENABLE(SVG)
  25
  26 #include "Attr.h"
  27 #include "DocLoader.h"
  28 #include "Document.h"
  29
  30 #include "SVGImageElement.h"
  31 #include "SVGLength.h"
  32 #include "SVGNames.h"
  33
  34 #include "RenderImage.h"
  35
  36 namespace WebCore {
  37
  38 SVGImageLoader::SVGImageLoader(SVGImageElement* node)
  39     : HTMLImageLoader(node)
  40 {
  41 }
  42
  43 SVGImageLoader::~SVGImageLoader()
  44 {
  45 }
  46
  47 // FIXME - Refactor most of this code into WebCore::HTMLImageLoader or a shared WebCore::ImageLoader base class
  48 void SVGImageLoader::updateFromElement()
  49 {
  50     SVGImageElement *imageElement = static_cast<SVGImageElement *>(element());
  51     WebCore::Document* doc = imageElement->ownerDocument();
  52
  53     CachedImage *newImage = 0;
  54     if (!imageElement->href().isEmpty()) {
  55         KURL uri = imageElement->baseURI();
  56         if (!uri.isEmpty())
  57             uri = KURL(uri, imageElement->href());
  58         else
  59             uri = KURL(imageElement->href());
  60         newImage = doc->docLoader()->requestImage(uri.string());
  61     }
  62
  63     CachedImage* oldImage = image();
  64     if (newImage != oldImage) {
  65         setLoadingImage(newImage);
  66         if (newImage)
  67             newImage->addClient(this);
  68         if (oldImage)
  69             oldImage->removeClient(this);
  70     }
  71
  72     if (RenderImage* renderer = static_cast<RenderImage*>(imageElement->renderer()))
  73         renderer->resetAnimation();
  74 }
  75
  76 void SVGImageLoader::dispatchLoadEvent()
  77 {
  78     if (!haveFiredLoadEvent() && image()) {
  79         setHaveFiredLoadEvent(true);
  80         if (image()->errorOccurred()) {
  81             // FIXME: We're supposed to put the document in an "error state" per the spec.
  82         } else if (static_cast<SVGImageElement*>(element())->externalResourcesRequiredBaseValue())
  83             static_cast<SVGElement*>(element())->sendSVGLoadEventIfPossible(true);
  84     }
  85 }
  86
  87 }
  88
  89 #endif // ENABLE(SVG)