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
|
/*
* Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
* Copyright (C) 2018-2025 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 "SVGStopElement.h"
#include "ContainerNodeInlines.h"
#include "Document.h"
#include "LegacyRenderSVGResource.h"
#include "RenderSVGGradientStop.h"
#include "RenderStyle+GettersInlines.h"
#include "SVGGradientElement.h"
#include "SVGNames.h"
#include "SVGParserUtilities.h"
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_ALLOCATED_IMPL(SVGStopElement);
inline SVGStopElement::SVGStopElement(const QualifiedName& tagName, Document& document)
: SVGElement(tagName, document, makeUniqueRef<PropertyRegistry>(*this))
, m_offset { SVGAnimatedNumber::create(this, 0) }
{
ASSERT(hasTagName(SVGNames::stopTag));
static bool didRegistration = false;
if (!didRegistration) [[unlikely]] {
didRegistration = true;
PropertyRegistry::registerProperty<SVGNames::offsetAttr, &SVGStopElement::m_offset>();
}
}
Ref<SVGStopElement> SVGStopElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGStopElement(tagName, document));
}
void SVGStopElement::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
if (name == SVGNames::offsetAttr) {
auto valueView = StringView(newValue).trim(isASCIIWhitespace<char16_t>);
bool isPercentage = valueView.endsWith('%');
if (isPercentage)
valueView = valueView.left(valueView.length() - 1);
auto parsedValue = parseNumber(valueView, SuffixSkippingPolicy::DontSkip);
float value = parsedValue.value_or(0);
if (parsedValue && isPercentage)
value /= 100.0f;
Ref { m_offset }->setBaseValInternal(value);
}
SVGElement::attributeChanged(name, oldValue, newValue, attributeModificationReason);
}
void SVGStopElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (PropertyRegistry::isKnownAttribute(attrName)) {
ASSERT(attrName == SVGNames::offsetAttr);
InstanceInvalidationGuard guard(*this);
updateSVGRendererForElementChange();
return;
}
SVGElement::svgAttributeChanged(attrName);
}
RenderPtr<RenderElement> SVGStopElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
{
return createRenderer<RenderSVGGradientStop>(*this, WTF::move(style));
}
bool SVGStopElement::rendererIsNeeded(const RenderStyle&)
{
return true;
}
Color SVGStopElement::stopColorIncludingOpacity() const
{
// Return initial value 'black' as per web specification below:
// https://svgwg.org/svg2-draft/pservers.html#StopColorProperties
if (!renderer())
return Color::black;
auto& style = renderer()->style();
auto stopColor = style.stopColorResolvingCurrentColor();
return stopColor.colorWithAlphaMultipliedBy(style.stopOpacity().value.value);
}
}
|
