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      1 /*
      2  * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis (at) kde.org>
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  */
     20 
     21 #ifndef SVGDocument_h
     22 #define SVGDocument_h
     23 
     24 #include "core/dom/Document.h"
     25 #include "core/platform/graphics/FloatPoint.h"
     26 
     27 namespace WebCore {
     28 
     29 class DOMImplementation;
     30 class SVGElement;
     31 class SVGSVGElement;
     32 
     33 class SVGDocument FINAL : public Document {
     34 public:
     35     static PassRefPtr<SVGDocument> create(const DocumentInit& initializer = DocumentInit())
     36     {
     37         return adoptRef(new SVGDocument(initializer));
     38     }
     39 
     40     SVGSVGElement* rootElement() const;
     41 
     42     void dispatchZoomEvent(float prevScale, float newScale);
     43     void dispatchScrollEvent();
     44 
     45     bool zoomAndPanEnabled() const;
     46 
     47     void startPan(const FloatPoint& start);
     48     void updatePan(const FloatPoint& pos) const;
     49 
     50 private:
     51     SVGDocument(const DocumentInit&);
     52 
     53     virtual bool childShouldCreateRenderer(const NodeRenderingContext&) const;
     54 
     55     FloatPoint m_translate;
     56 };
     57 
     58 inline SVGDocument* toSVGDocument(Document* document)
     59 {
     60     ASSERT_WITH_SECURITY_IMPLICATION(!document || document->isSVGDocument());
     61     return static_cast<SVGDocument*>(document);
     62 }
     63 
     64 inline const SVGDocument* toSVGDocument(const Document* document)
     65 {
     66     ASSERT_WITH_SECURITY_IMPLICATION(!document || document->isSVGDocument());
     67     return static_cast<const SVGDocument*>(document);
     68 }
     69 
     70 // This will catch anyone doing an unnecessary cast.
     71 void toSVGDocument(const SVGDocument*);
     72 
     73 } // namespace WebCore
     74 
     75 #endif // SVGDocument_h
     76