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      1 /*
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
      4  * Copyright (C) 2013 Google Inc. All rights reserved.
      5  *
      6  * This library is free software; you can redistribute it and/or
      7  * modify it under the terms of the GNU Library General Public
      8  * License as published by the Free Software Foundation; either
      9  * version 2 of the License, or (at your option) any later version.
     10  *
     11  * This library is distributed in the hope that it will be useful,
     12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14  * Library General Public License for more details.
     15  *
     16  * You should have received a copy of the GNU Library General Public License
     17  * along with this library; see the file COPYING.LIB.  If not, write to
     18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     19  * Boston, MA 02110-1301, USA.
     20  *
     21  */
     22 
     23 #ifndef StyleResourceLoader_h
     24 #define StyleResourceLoader_h
     25 
     26 #include "wtf/OwnPtr.h"
     27 #include "wtf/PassRefPtr.h"
     28 
     29 namespace blink {
     30 
     31 class ElementStyleResources;
     32 class RenderStyle;
     33 class ResourceFetcher;
     34 class ShapeValue;
     35 class StyleImage;
     36 class StylePendingImage;
     37 
     38 // Manages loading of resources, requested by the stylesheets.
     39 // Expects the same lifetime as StyleResolver, because
     40 // it expects ResourceFetcher to never change.
     41 class StyleResourceLoader {
     42 WTF_MAKE_NONCOPYABLE(StyleResourceLoader);
     43 public:
     44     explicit StyleResourceLoader(ResourceFetcher*);
     45 
     46     void loadPendingResources(RenderStyle*, ElementStyleResources&);
     47 
     48 private:
     49     void loadPendingSVGDocuments(RenderStyle*, ElementStyleResources&);
     50 
     51     PassRefPtr<StyleImage> loadPendingImage(StylePendingImage*, float deviceScaleFactor);
     52     void loadPendingImages(RenderStyle*, ElementStyleResources&);
     53     void loadPendingShapeImage(RenderStyle*, ShapeValue*, float deviceScaleFactor);
     54 
     55     ResourceFetcher* m_fetcher;
     56 };
     57 
     58 } // namespace blink
     59 
     60 #endif // StyleResourceLoader_h
     61