rendersvggradientstop.h

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 * This file is part of the WebKit project.
 *
 * Copyright (C) 2007 Eric Seidel <[e-mail]>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#ifndef RenderSVGGradientStop_h
#define RenderSVGGradientStop_h

#if ENABLE(SVG)
#include "RenderObject.h"

namespace WebCore {
    
    class SVGGradientElement;
    class SVGStopElement;
    
    // This class exists mostly so we can hear about gradient stop style changes
    class RenderSVGGradientStop : public RenderObject {
    public:
        RenderSVGGradientStop(SVGStopElement*);
        virtual ~RenderSVGGradientStop();

        virtual const char* renderName() const { return "RenderSVGGradientStop"; }

        virtual void layout();

        // This override is needed to prevent an assert on <svg><stop /></svg>
        // RenderObject's default impl asserts.
        // https://bugs.webkit.org/show_bug.cgi?id=20400
        virtual IntRect clippedOverflowRectForRepaint(RenderBoxModelObject*) { return IntRect(); }
    
    protected:
        virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);

    private:
        SVGGradientElement* gradientElement() const;
    };
}

#endif // ENABLE(SVG)
#endif // RenderSVGGradientStop_h