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      1 /*
      2  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005, 2007 Rob Buis <buis (at) kde.org>
      4  * Copyright (C) 2009 Google, Inc.
      5  * Copyright (C) 2009 Apple Inc. All rights reserved.
      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 #ifndef RenderSVGViewportContainer_h
     24 #define RenderSVGViewportContainer_h
     25 
     26 #if ENABLE(SVG)
     27 #include "RenderSVGContainer.h"
     28 
     29 namespace WebCore {
     30 
     31 // This is used for non-root <svg> elements and <marker> elements, neither of which are SVGTransformable
     32 // thus we inherit from RenderSVGContainer instead of RenderSVGTransformableContainer
     33 class RenderSVGViewportContainer : public RenderSVGContainer {
     34 public:
     35     explicit RenderSVGViewportContainer(SVGStyledElement*);
     36 
     37 private:
     38     virtual bool isSVGContainer() const { return true; }
     39     virtual bool isSVGViewportContainer() const { return true; }
     40     virtual const char* renderName() const { return "RenderSVGViewportContainer"; }
     41 
     42     AffineTransform viewportTransform() const;
     43     virtual const AffineTransform& localToParentTransform() const;
     44 
     45     virtual void calcViewport();
     46 
     47     virtual void applyViewportClip(PaintInfo&);
     48     virtual bool pointIsInsideViewportClip(const FloatPoint& pointInParent);
     49 
     50     FloatRect m_viewport;
     51     mutable AffineTransform m_localToParentTransform;
     52 };
     53 
     54 inline RenderSVGViewportContainer* toRenderSVGViewportContainer(RenderObject* object)
     55 {
     56     ASSERT(!object || !strcmp(object->renderName(), "RenderSVGViewportContainer"));
     57     return static_cast<RenderSVGViewportContainer*>(object);
     58 }
     59 
     60 // This will catch anyone doing an unnecessary cast.
     61 void toRenderSVGViewportContainer(const RenderSVGViewportContainer*);
     62 
     63 } // namespace WebCore
     64 
     65 #endif // ENABLE(SVG)
     66 #endif // RenderSVGViewportContainer_h
     67