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
|
/*
* Copyright (C) 2025 Samuel Weinig <sam@webkit.org>
* Copyright (C) 2025 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "StyleTextDecorationThickness.h"
#include "AnimationUtilities.h"
#include "CSSPrimitiveValue.h"
#include "FontMetrics.h"
#include "RenderStyleInlines.h"
#include "StyleBuilderChecking.h"
#include "StyleLengthWrapper+Blending.h"
#include "StyleLengthWrapper+CSSValueConversion.h"
namespace WebCore {
namespace Style {
static constexpr float textDecorationBaseFontSize = 16;
float TextDecorationThickness::resolve(const RenderStyle& style) const
{
return WTF::switchOn(m_value,
[&](const CSS::Keyword::Auto&) {
return style.computedFontSize() / textDecorationBaseFontSize;
},
[&](const CSS::Keyword::FromFont&) {
return style.metricsOfPrimaryFont().underlineThickness().value_or(0);
},
[&](const TextDecorationThicknessLength& length) {
return Style::evaluate<float>(length, style.computedFontSize(), style.usedZoomForLength());
}
);
}
// MARK: - Conversion
auto CSSValueConversion<TextDecorationThickness>::operator()(BuilderState& state, const CSSValue& value) -> TextDecorationThickness
{
RefPtr primitiveValue = requiredDowncast<CSSPrimitiveValue>(state, value);
if (!primitiveValue)
return CSS::Keyword::Auto { };
if (primitiveValue->isValueID()) {
switch (primitiveValue->valueID()) {
case CSSValueAuto:
return CSS::Keyword::Auto { };
case CSSValueFromFont:
return CSS::Keyword::FromFont { };
default:
break;
}
state.setCurrentPropertyInvalidAtComputedValueTime();
return CSS::Keyword::Auto { };
}
return toStyleFromCSSValue<TextDecorationThicknessLength>(state, *primitiveValue);
}
// MARK: - Blending
auto Blending<TextDecorationThickness>::canBlend(const TextDecorationThickness& a, const TextDecorationThickness& b, const RenderStyle& aStyle, const RenderStyle& bStyle) -> bool
{
if (a.isAuto() || b.isAuto())
return false;
return a.resolve(aStyle) != b.resolve(bStyle);
}
auto Blending<TextDecorationThickness>::blend(const TextDecorationThickness& a, const TextDecorationThickness& b, const RenderStyle& aStyle, const RenderStyle& bStyle, const BlendingContext& context) -> TextDecorationThickness
{
if (context.isDiscrete) {
ASSERT(!context.progress || context.progress == 1.0);
return context.progress ? b : a;
}
return TextDecorationThicknessLength { TextDecorationThicknessLength::Fixed { WebCore::blend(a.resolve(aStyle), b.resolve(bStyle), context) } };
}
} // namespace Style
} // namespace WebCore
|
