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
|
/*
* Copyright (C) 2025 Samuel Weinig <sam@webkit.org>
*
* 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,
* 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 "StyleAspectRatio.h"
#include "AnimationUtilities.h"
#include "CSSPrimitiveValue.h"
#include "CSSRatioValue.h"
#include "CSSValueList.h"
#include "RenderStyleInlines.h"
#include "StyleBuilderChecking.h"
#include "StylePrimitiveNumericTypes+Conversions.h"
namespace WebCore {
namespace Style {
auto CSSValueConversion<AspectRatio>::operator()(BuilderState& state, const CSSValue& value) -> AspectRatio
{
if (isValueID(value, CSSValueAuto))
return CSS::Keyword::Auto { };
if (RefPtr ratioValue = dynamicDowncast<CSSRatioValue>(value))
return toStyle(ratioValue->ratio(), state);
auto list = requiredListDowncast<CSSValueList, CSSValue, 2>(state, value);
if (!list)
return CSS::Keyword::Auto { };
Ref value0 = list->item(0);
if (!isValueID(value0.get(), CSSValueAuto))
return CSS::Keyword::Auto { };
Ref value1 = list->item(1);
RefPtr ratioValue = requiredDowncast<CSSRatioValue>(state, value1);
if (!ratioValue)
return CSS::Keyword::Auto { };
return { CSS::Keyword::Auto { }, toStyle(ratioValue->ratio(), state) };
}
// MARK: - Blending
auto Blending<AspectRatio>::canBlend(const AspectRatio& a, const AspectRatio& b) -> bool
{
return (a.isRatio() && b.isRatio())
|| (a.isAutoAndRatio() && b.isAutoAndRatio());
}
auto Blending<AspectRatio>::blend(const AspectRatio& a, const AspectRatio& b, const RenderStyle& aStyle, const RenderStyle& bStyle, const BlendingContext& context) -> AspectRatio
{
if (context.isDiscrete) {
ASSERT(!context.progress || context.progress == 1);
return context.progress ? b : a;
}
ASSERT(a.m_type == b.m_type);
auto blendedRatio = WebCore::blend(std::log(aStyle.logicalAspectRatio()), std::log(bStyle.logicalAspectRatio()), context);
return AspectRatio { a.m_type, Ratio { .numerator = { std::exp(blendedRatio) }, .denominator = { 1 } } };
}
} // namespace Style
} // namespace WebCore
|
