2 * Copyright (C) 2006 Rob Buis <buis@kde.org>
3 * (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
4 * Copyright (C) 2008 Apple Inc. All rights reserved.
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.
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.
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.
23 #include "CSSCursorImageValue.h"
25 #include "DocLoader.h"
27 #include "PlatformString.h"
28 #include "RenderStyle.h"
29 #include <wtf/MathExtras.h>
32 #include "SVGCursorElement.h"
33 #include "SVGURIReference.h"
39 static inline bool isSVGCursorIdentifier(const String& url)
45 static inline SVGCursorElement* resourceReferencedByCursorElement(const String& fragmentId, Document* document)
47 Element* element = document->getElementById(SVGURIReference::getTarget(fragmentId));
48 if (element && element->hasTagName(SVGNames::cursorTag))
49 return static_cast<SVGCursorElement*>(element);
55 CSSCursorImageValue::CSSCursorImageValue(const String& url, const IntPoint& hotspot)
61 CSSCursorImageValue::~CSSCursorImageValue()
64 const String& url = getStringValue();
65 if (!isSVGCursorIdentifier(url))
68 HashSet<SVGElement*>::const_iterator it = m_referencedElements.begin();
69 HashSet<SVGElement*>::const_iterator end = m_referencedElements.end();
71 for (; it != end; ++it) {
72 SVGElement* referencedElement = *it;
73 referencedElement->setCursorImageValue(0);
74 if (SVGCursorElement* cursorElement = resourceReferencedByCursorElement(url, referencedElement->document()))
75 cursorElement->removeClient(referencedElement);
80 bool CSSCursorImageValue::updateIfSVGCursorIsUsed(Element* element)
83 if (!element || !element->isSVGElement())
86 const String& url = getStringValue();
87 if (!isSVGCursorIdentifier(url))
90 if (SVGCursorElement* cursorElement = resourceReferencedByCursorElement(url, element->document())) {
91 float x = roundf(cursorElement->x().value(0));
92 m_hotspot.setX(static_cast<int>(x));
94 float y = roundf(cursorElement->y().value(0));
95 m_hotspot.setY(static_cast<int>(y));
97 if (cachedImageURL() != element->document()->completeURL(cursorElement->href()))
100 SVGElement* svgElement = static_cast<SVGElement*>(element);
101 m_referencedElements.add(svgElement);
102 svgElement->setCursorImageValue(this);
103 cursorElement->addClient(svgElement);
111 StyleCachedImage* CSSCursorImageValue::cachedImage(DocLoader* loader)
113 String url = getStringValue();
116 if (isSVGCursorIdentifier(url) && loader && loader->doc()) {
117 if (SVGCursorElement* cursorElement = resourceReferencedByCursorElement(url, loader->doc()))
118 url = cursorElement->href();
122 return CSSImageValue::cachedImage(loader, url);
126 void CSSCursorImageValue::removeReferencedElement(SVGElement* element)
128 m_referencedElements.remove(element);
132 } // namespace WebCore