khtml/svg/graphics/SVGResource.h

   1 /*
   2  * Copyright (C) 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef SVGResource_h
  27 #define SVGResource_h
  28
  29 #if ENABLE(SVG)
  30 #include "PlatformString.h"
  31 //#include "StringHash.h"
  32
  33 #include <wtf/HashMap.h>
  34 #include <wtf/HashSet.h>
  35 #include <wtf/RefCounted.h>
  36
  37 #include "Document.h"
  38
  39 namespace WebCore {
  40
  41     //class AtomicString;
  42     //class Document;
  43     class SVGStyledElement;
  44     //class TextStream;
  45
  46     enum SVGResourceType {
  47         // Painting mode
  48         ClipperResourceType = 0,
  49         MarkerResourceType,
  50         ImageResourceType,
  51         FilterResourceType,
  52         MaskerResourceType,
  53         PaintServerResourceType,
  54
  55         // For resource tracking we need to know how many types of resource there are
  56         _ResourceTypeCount
  57     };
  58
  59     // The SVGResource file represent various graphics resources:
  60     // - Filter resource
  61     // - Clipper resource
  62     // - Masker resource
  63     // - Marker resource
  64     // - Pattern resource
  65     // - Linear/Radial gradient resource
  66     //
  67     // SVG creates/uses these resources.
  68
  69     class SVGResource : public RefCounted<SVGResource> {
  70     public:
  71         virtual ~SVGResource();
  72
  73         virtual void invalidate();
  74
  75         void addClient(SVGStyledElement*);
  76         virtual SVGResourceType resourceType() const = 0;
  77
  78         bool isPaintServer() const { return resourceType() == PaintServerResourceType; }
  79         bool isFilter() const { return resourceType() == FilterResourceType; }
  80         bool isClipper() const { return resourceType() == ClipperResourceType; }
  81         bool isMarker() const { return resourceType() == MarkerResourceType; }
  82         bool isMasker() const { return resourceType() == MaskerResourceType; }
  83
  84         /*virtual TextStream& externalRepresentation(TextStream&) const;*/
  85
  86         static void invalidateClients(HashSet<SVGStyledElement*>);
  87         static void removeClient(SVGStyledElement*);
  88
  89     protected:
  90         SVGResource();
  91
  92     private:
  93         HashSet<SVGStyledElement*> m_clients;
  94     };
  95
  96     SVGResource* getResourceById(Document*, const AtomicString&);
  97
  98     /*TextStream& operator<<(TextStream&, const SVGResource&);*/
  99
 100 } // namespace WebCore
 101
 102 #endif
 103 #endif // SVGResource_h