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 "CachedResourceLoader.h"
27 #include "PlatformString.h"
28 #include <wtf/MathExtras.h>
29 #include <wtf/UnusedParam.h>
32 #include "SVGCursorElement.h"
33 #include "SVGURIReference.h"
39 static inline bool isSVGCursorIdentifier(const String& url)
41 KURL kurl(ParsedURLString, url);
42 return kurl.hasFragmentIdentifier();
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 UNUSED_PARAM(element);
85 if (!element || !element->isSVGElement())
88 const String& url = getStringValue();
89 if (!isSVGCursorIdentifier(url))
92 if (SVGCursorElement* cursorElement = resourceReferencedByCursorElement(url, element->document())) {
93 // FIXME: This will override hot spot specified in CSS, which is probably incorrect.
94 float x = roundf(cursorElement->x().value(0));
95 m_hotSpot.setX(static_cast<int>(x));
97 float y = roundf(cursorElement->y().value(0));
98 m_hotSpot.setY(static_cast<int>(y));
100 if (cachedImageURL() != element->document()->completeURL(cursorElement->href()))
103 SVGElement* svgElement = static_cast<SVGElement*>(element);
104 m_referencedElements.add(svgElement);
105 svgElement->setCursorImageValue(this);
106 cursorElement->addClient(svgElement);
114 StyleCachedImage* CSSCursorImageValue::cachedImage(CachedResourceLoader* loader)
116 String url = getStringValue();
119 if (isSVGCursorIdentifier(url) && loader && loader->document()) {
120 if (SVGCursorElement* cursorElement = resourceReferencedByCursorElement(url, loader->document()))
121 url = cursorElement->href();
125 return CSSImageValue::cachedImage(loader, url);
129 void CSSCursorImageValue::removeReferencedElement(SVGElement* element)
131 m_referencedElements.remove(element);
135 } // namespace WebCore