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 #include "config.h"
24
25 #if ENABLE(SVG)
26 #include "RenderSVGGradientStop.h"
27
28 #include "SVGGradientElement.h"
29 #include "SVGNames.h"
30 #include "SVGStopElement.h"
31
32 namespace WebCore {
33
34 using namespace SVGNames;
35
RenderSVGGradientStop(SVGStopElement * element)36 RenderSVGGradientStop::RenderSVGGradientStop(SVGStopElement* element)
37 : RenderObject(element)
38 {
39 }
40
~RenderSVGGradientStop()41 RenderSVGGradientStop::~RenderSVGGradientStop()
42 {
43 }
44
styleDidChange(StyleDifference diff,const RenderStyle * oldStyle)45 void RenderSVGGradientStop::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
46 {
47 RenderObject::styleDidChange(diff, oldStyle);
48
49 // <stop> elements should only be allowed to make renderers under gradient elements
50 // but I can imagine a few cases we might not be catching, so let's not crash if our parent isn't a gradient.
51 if (SVGGradientElement* gradient = gradientElement()) {
52 if (SVGResource* resource = gradient->canvasResource(this))
53 resource->invalidate();
54 }
55 }
56
layout()57 void RenderSVGGradientStop::layout()
58 {
59 setNeedsLayout(false);
60 }
61
gradientElement() const62 SVGGradientElement* RenderSVGGradientStop::gradientElement() const
63 {
64 Node* parentNode = node()->parent();
65 if (parentNode->hasTagName(linearGradientTag) || parentNode->hasTagName(radialGradientTag))
66 return static_cast<SVGGradientElement*>(parentNode);
67 return 0;
68 }
69
70 }
71
72 #endif // ENABLE(SVG)
73