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SVGResource.h

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00001 /*
00002  * Copyright (C) 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
00003  *
00004  * Redistribution and use in source and binary forms, with or without
00005  * modification, are permitted provided that the following conditions
00006  * are met:
00007  * 1. Redistributions of source code must retain the above copyright
00008  *    notice, this list of conditions and the following disclaimer.
00009  * 2. Redistributions in binary form must reproduce the above copyright
00010  *    notice, this list of conditions and the following disclaimer in the
00011  *    documentation and/or other materials provided with the distribution.
00012  *
00013  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
00014  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00015  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
00016  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
00017  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00018  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00019  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00020  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
00021  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00022  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00023  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
00024  */
00025 
00026 #ifndef SVGResource_h
00027 #define SVGResource_h
00028 
00029 #if ENABLE(SVG)
00030 #include "PlatformString.h"
00031 //#include "StringHash.h"
00032 
00033 #include <wtf/HashMap.h>
00034 #include <wtf/HashSet.h>
00035 #include <wtf/RefCounted.h>
00036 
00037 #include "Document.h"
00038 
00039 namespace WebCore {
00040 
00041     //class AtomicString; 
00042     //class Document;
00043     class SVGStyledElement;
00044     //class TextStream;
00045 
00046     enum SVGResourceType {
00047         // Painting mode
00048         ClipperResourceType = 0,
00049         MarkerResourceType,
00050         ImageResourceType,
00051         FilterResourceType,
00052         MaskerResourceType,
00053         PaintServerResourceType,
00054         
00055         // For resource tracking we need to know how many types of resource there are
00056         _ResourceTypeCount
00057     };
00058 
00059     // The SVGResource file represent various graphics resources:
00060     // - Filter resource
00061     // - Clipper resource
00062     // - Masker resource
00063     // - Marker resource
00064     // - Pattern resource
00065     // - Linear/Radial gradient resource
00066     //
00067     // SVG creates/uses these resources.
00068 
00069     class SVGResource : public RefCounted<SVGResource> {
00070     public:
00071         virtual ~SVGResource();
00072       
00073         virtual void invalidate();
00074 
00075         void addClient(SVGStyledElement*);
00076         virtual SVGResourceType resourceType() const = 0;
00077         
00078         bool isPaintServer() const { return resourceType() == PaintServerResourceType; }
00079         bool isFilter() const { return resourceType() == FilterResourceType; }
00080         bool isClipper() const { return resourceType() == ClipperResourceType; }
00081         bool isMarker() const { return resourceType() == MarkerResourceType; }
00082         bool isMasker() const { return resourceType() == MaskerResourceType; }
00083 
00084         /*virtual TextStream& externalRepresentation(TextStream&) const;*/
00085 
00086         static void invalidateClients(HashSet<SVGStyledElement*>);
00087         static void removeClient(SVGStyledElement*);
00088 
00089     protected:
00090         SVGResource();
00091 
00092     private:
00093         HashSet<SVGStyledElement*> m_clients;
00094     };
00095 
00096     SVGResource* getResourceById(Document*, const AtomicString&);
00097     
00098     /*TextStream& operator<<(TextStream&, const SVGResource&);*/
00099 
00100 } // namespace WebCore
00101 
00102 #endif
00103 #endif // SVGResource_h

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