1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* Copyright (C) 2006 Rob Buis <buis@kde.org>
* (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2008 Apple Inc. All rights reserved.
*
* 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.
*/
#include "config.h"
#include "CSSCursorImageValue.h"
#include "CachedResourceLoader.h"
#include "TreeScope.h"
#include "PlatformString.h"
#include <wtf/MathExtras.h>
#include <wtf/UnusedParam.h>
#if ENABLE(SVG)
#include "SVGCursorElement.h"
#include "SVGLengthContext.h"
#include "SVGNames.h"
#include "SVGURIReference.h"
#endif
namespace WebCore {
#if ENABLE(SVG)
static inline bool isSVGCursorIdentifier(const String& url)
{
KURL kurl(ParsedURLString, url);
return kurl.hasFragmentIdentifier();
}
static inline SVGCursorElement* resourceReferencedByCursorElement(const String& url, Document* document)
{
Element* element = SVGURIReference::targetElementFromIRIString(url, document);
if (element && element->hasTagName(SVGNames::cursorTag))
return static_cast<SVGCursorElement*>(element);
return 0;
}
#endif
CSSCursorImageValue::CSSCursorImageValue(const String& url, const IntPoint& hotSpot)
: CSSImageValue(CursorImageClass, url)
, m_hotSpot(hotSpot)
{
}
CSSCursorImageValue::~CSSCursorImageValue()
{
#if ENABLE(SVG)
const String& url = getStringValue();
if (!isSVGCursorIdentifier(url))
return;
HashSet<SVGElement*>::const_iterator it = m_referencedElements.begin();
HashSet<SVGElement*>::const_iterator end = m_referencedElements.end();
for (; it != end; ++it) {
SVGElement* referencedElement = *it;
referencedElement->cursorImageValueRemoved();
if (SVGCursorElement* cursorElement = resourceReferencedByCursorElement(url, referencedElement->document()))
cursorElement->removeClient(referencedElement);
}
#endif
}
bool CSSCursorImageValue::updateIfSVGCursorIsUsed(Element* element)
{
#if !ENABLE(SVG)
UNUSED_PARAM(element);
#else
if (!element || !element->isSVGElement())
return false;
const String& url = getStringValue();
if (!isSVGCursorIdentifier(url))
return false;
if (SVGCursorElement* cursorElement = resourceReferencedByCursorElement(url, element->document())) {
// FIXME: This will override hot spot specified in CSS, which is probably incorrect.
SVGLengthContext lengthContext(0);
float x = roundf(cursorElement->x().value(lengthContext));
m_hotSpot.setX(static_cast<int>(x));
float y = roundf(cursorElement->y().value(lengthContext));
m_hotSpot.setY(static_cast<int>(y));
if (cachedImageURL() != element->document()->completeURL(cursorElement->href()))
clearCachedImage();
SVGElement* svgElement = static_cast<SVGElement*>(element);
m_referencedElements.add(svgElement);
svgElement->setCursorImageValue(this);
cursorElement->addClient(svgElement);
return true;
}
#endif
return false;
}
StyleCachedImage* CSSCursorImageValue::cachedImage(CachedResourceLoader* loader)
{
String url = getStringValue();
#if ENABLE(SVG)
if (isSVGCursorIdentifier(url) && loader && loader->document()) {
// FIXME: This will fail if the <cursor> element is in a shadow DOM (bug 59827)
if (SVGCursorElement* cursorElement = resourceReferencedByCursorElement(url, loader->document()))
url = cursorElement->href();
}
#endif
return CSSImageValue::cachedImage(loader, url);
}
#if ENABLE(SVG)
void CSSCursorImageValue::removeReferencedElement(SVGElement* element)
{
m_referencedElements.remove(element);
}
#endif
} // namespace WebCore
|
