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
|
/*
* Copyright (C) 2023, 2024 Igalia S.L.
*
* 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 "RenderSVGResourceGradient.h"
#include "RenderSVGModelObjectInlines.h"
#include "RenderSVGResourceGradientInlines.h"
#include "RenderSVGShape.h"
#include "SVGRenderStyle.h"
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(RenderSVGResourceGradient);
RenderSVGResourceGradient::RenderSVGResourceGradient(Type type, SVGElement& element, RenderStyle&& style)
: RenderSVGResourcePaintServer(type, element, WTFMove(style))
{
}
RenderSVGResourceGradient::~RenderSVGResourceGradient() = default;
GradientColorStops RenderSVGResourceGradient::stopsByApplyingColorFilter(const GradientColorStops& stops, const RenderStyle& style) const
{
if (!style.hasAppleColorFilter())
return stops;
return stops.mapColors([&] (auto& color) {
return style.colorByApplyingColorFilter(color);
});
}
GradientSpreadMethod RenderSVGResourceGradient::platformSpreadMethodFromSVGType(SVGSpreadMethodType method) const
{
switch (method) {
case SVGSpreadMethodUnknown:
case SVGSpreadMethodPad:
return GradientSpreadMethod::Pad;
case SVGSpreadMethodReflect:
return GradientSpreadMethod::Reflect;
case SVGSpreadMethodRepeat:
return GradientSpreadMethod::Repeat;
}
ASSERT_NOT_REACHED();
return GradientSpreadMethod::Pad;
}
bool RenderSVGResourceGradient::buildGradientIfNeeded(const RenderLayerModelObject& targetRenderer, const RenderStyle& style, AffineTransform& userspaceTransform)
{
if (!m_gradient) {
collectGradientAttributesIfNeeded();
m_gradient = createGradient(style);
if (!m_gradient)
return false;
}
auto objectBoundingBox = targetRenderer.objectBoundingBox();
if (gradientUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
// Gradient is not applicable on 1d objects (empty objectBoundingBox), unless 'gradientUnits' is equal to 'userSpaceOnUse'.
if (objectBoundingBox.isEmpty())
return false;
userspaceTransform.translate(objectBoundingBox.location());
userspaceTransform.scale(objectBoundingBox.size());
}
if (auto gradientTransform = this->gradientTransform(); !gradientTransform.isIdentity())
userspaceTransform.multiply(gradientTransform);
return true;
}
bool RenderSVGResourceGradient::prepareFillOperation(GraphicsContext& context, const RenderLayerModelObject& targetRenderer, const RenderStyle& style)
{
AffineTransform userspaceTransform;
if (!buildGradientIfNeeded(targetRenderer, style, userspaceTransform))
return false;
Ref svgStyle = style.svgStyle();
context.setAlpha(svgStyle->fillOpacity());
context.setFillRule(svgStyle->fillRule());
context.setFillGradient(m_gradient.copyRef().releaseNonNull(), userspaceTransform);
return true;
}
bool RenderSVGResourceGradient::prepareStrokeOperation(GraphicsContext& context, const RenderLayerModelObject& targetRenderer, const RenderStyle& style)
{
AffineTransform userspaceTransform;
if (!buildGradientIfNeeded(targetRenderer, style, userspaceTransform))
return false;
Ref svgStyle = style.svgStyle();
if (svgStyle->vectorEffect() == VectorEffect::NonScalingStroke) {
if (CheckedPtr shape = dynamicDowncast<RenderSVGShape>(targetRenderer))
userspaceTransform = shape->nonScalingStrokeTransform() * userspaceTransform;
}
context.setAlpha(svgStyle->strokeOpacity());
SVGRenderSupport::applyStrokeStyleToContext(context, style, targetRenderer);
context.setStrokeGradient(m_gradient.copyRef().releaseNonNull(), userspaceTransform);
return true;
}
}
|
