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      1 /*
      2  * Copyright (C) 2007 Eric Seidel <eric (at) webkit.org>
      3  * Copyright (C) 2009 Google, Inc.
      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 
     22 #ifndef RenderSVGGradientStop_h
     23 #define RenderSVGGradientStop_h
     24 
     25 #if ENABLE(SVG)
     26 #include "RenderObject.h"
     27 
     28 namespace WebCore {
     29 
     30     class SVGGradientElement;
     31     class SVGStopElement;
     32 
     33     // This class exists mostly so we can hear about gradient stop style changes
     34     class RenderSVGGradientStop : public RenderObject {
     35     public:
     36         RenderSVGGradientStop(SVGStopElement*);
     37         virtual ~RenderSVGGradientStop();
     38 
     39         virtual const char* renderName() const { return "RenderSVGGradientStop"; }
     40 
     41         virtual void layout();
     42 
     43         // This overrides are needed to prevent ASSERTs on <svg><stop /></svg>
     44         // RenderObject's default implementations ASSERT_NOT_REACHED()
     45         // https://bugs.webkit.org/show_bug.cgi?id=20400
     46         virtual IntRect clippedOverflowRectForRepaint(RenderBoxModelObject*) { return IntRect(); }
     47         virtual FloatRect objectBoundingBox() const { return FloatRect(); }
     48         virtual FloatRect repaintRectInLocalCoordinates() const { return FloatRect(); }
     49 
     50     protected:
     51         virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
     52 
     53     private:
     54         SVGGradientElement* gradientElement() const;
     55     };
     56 }
     57 
     58 #endif // ENABLE(SVG)
     59 #endif // RenderSVGGradientStop_h
     60