WebCore/RenderSVGGradientStop.h

   1 /*
   2  * This file is part of the WebKit project.
   3  *
   4  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Library General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Library General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Library General Public License
  17  * along with this library; see the file COPYING.LIB.  If not, write to
  18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  * Boston, MA 02110-1301, USA.
  20  *
  21  */
  22
  23 #ifndef RenderSVGGradientStop_h
  24 #define RenderSVGGradientStop_h
  25
  26 #if ENABLE(SVG)
  27 #include "RenderObject.h"
  28
  29 namespace WebCore {
  30
  31     class SVGGradientElement;
  32     class SVGStopElement;
  33
  34     // This class exists mostly so we can hear about gradient stop style changes
  35     class RenderSVGGradientStop : public RenderObject {
  36     public:
  37         RenderSVGGradientStop(SVGStopElement*);
  38         virtual ~RenderSVGGradientStop();
  39
  40         virtual const char* renderName() const { return "RenderSVGGradientStop"; }
  41
  42         virtual void layout();
  43
  44         // This override is needed to prevent crashing on <svg><stop /></svg>
  45         // RenderObject's default impl asks the parent Object and RenderSVGRoot
  46         // asks all child RenderObjects for overflow rects, thus infinite loop.
  47         // https://bugs.webkit.org/show_bug.cgi?id=20400
  48         virtual IntRect clippedOverflowRectForRepaint(RenderBox*) { return IntRect(); }
  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