1/*
2 * Copyright (C) 2007 Eric Seidel <eric@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#ifndef RenderSVGGradientStop_h
22#define RenderSVGGradientStop_h
23
24#if ENABLE(SVG)
25#include "RenderObject.h"
26
27namespace WebCore {
28
29class SVGGradientElement;
30class SVGStopElement;
31
32// This class exists mostly so we can hear about gradient stop style changes
33class RenderSVGGradientStop : public RenderObject {
34public:
35    RenderSVGGradientStop(SVGStopElement*);
36    virtual ~RenderSVGGradientStop();
37
38    virtual bool isSVGGradientStop() const { return true; }
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 strokeBoundingBox() const { return FloatRect(); }
49    virtual FloatRect repaintRectInLocalCoordinates() const { return FloatRect(); }
50
51protected:
52    virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
53
54private:
55    SVGGradientElement* gradientElement() const;
56};
57
58inline const RenderSVGGradientStop* toRenderSVGGradientStop(const RenderObject* object)
59{
60    ASSERT(!object || object->isSVGGradientStop());
61    return static_cast<const RenderSVGGradientStop*>(object);
62}
63
64}
65
66#endif // ENABLE(SVG)
67#endif // RenderSVGGradientStop_h
68