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/*
* 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.
*/
#pragma once
#include "StyleBuilderChecking.h"
#include "StyleLengthWrapper.h"
namespace WebCore {
namespace Style {
// MARK: - Conversion
template<LengthWrapperBaseDerived T> struct CSSValueConversion<T> {
auto operator()(BuilderState& state, const CSSPrimitiveValue& primitiveValue) -> T
{
using namespace CSS::Literals;
auto convertLengthPercentage = [&] -> T {
auto conversionData = state.useSVGZoomRulesForLength()
? state.cssToLengthConversionData().copyWithAdjustedZoom(1.0f)
: state.cssToLengthConversionData();
if (primitiveValue.isLength()) {
return T {
typename T::Fixed {
CSS::clampToRange<T::Fixed::range, float>(primitiveValue.resolveAsLength(conversionData), minValueForCssLength, maxValueForCssLength),
},
primitiveValue.primitiveType() == CSSUnitType::CSS_QUIRKY_EM
};
}
if (primitiveValue.isPercentage()) {
return T {
typename T::Percentage {
CSS::clampToRange<T::Percentage::range, float>(primitiveValue.resolveAsPercentage(conversionData)),
}
};
}
if (primitiveValue.isCalculatedPercentageWithLength()) {
return T {
typename T::Calc {
primitiveValue.protectedCssCalcValue()->createCalculationValue(conversionData, CSSCalcSymbolTable { })
}
};
}
ASSERT_NOT_REACHED();
state.setCurrentPropertyInvalidAtComputedValueTime();
return 0_css_px;
};
if constexpr (!T::Keywords::count)
return convertLengthPercentage();
else {
switch (primitiveValue.valueID()) {
case CSSValueInvalid:
return convertLengthPercentage();
case CSSValueIntrinsic:
if constexpr (T::SupportsIntrinsic)
return CSS::Keyword::Intrinsic { };
else
break;
case CSSValueMinIntrinsic:
if constexpr (T::SupportsMinIntrinsic)
return CSS::Keyword::MinIntrinsic { };
else
break;
case CSSValueMinContent:
case CSSValueWebkitMinContent:
if constexpr (T::SupportsMinContent)
return CSS::Keyword::MinContent { };
else
break;
case CSSValueMaxContent:
case CSSValueWebkitMaxContent:
if constexpr (T::SupportsMaxContent)
return CSS::Keyword::MaxContent { };
else
break;
case CSSValueWebkitFillAvailable:
if constexpr (T::SupportsWebkitFillAvailable)
return CSS::Keyword::WebkitFillAvailable { };
else
break;
case CSSValueFitContent:
case CSSValueWebkitFitContent:
if constexpr (T::SupportsFitContent)
return CSS::Keyword::FitContent { };
else
break;
case CSSValueAuto:
if constexpr (T::SupportsAuto)
return CSS::Keyword::Auto { };
else
break;
case CSSValueContent:
if constexpr (T::SupportsContent)
return CSS::Keyword::Content { };
else
break;
case CSSValueNormal:
if constexpr (T::SupportsNormal)
return CSS::Keyword::Normal { };
else
break;
case CSSValueNone:
if constexpr (T::SupportsNone)
return CSS::Keyword::None { };
else
break;
default:
break;
}
ASSERT_NOT_REACHED();
state.setCurrentPropertyInvalidAtComputedValueTime();
return 0_css_px;
}
}
auto operator()(BuilderState& state, const CSSValue& value) -> T
{
using namespace CSS::Literals;
RefPtr primitiveValue = requiredDowncast<CSSPrimitiveValue>(state, value);
if (!primitiveValue)
return 0_css_px;
return this->operator()(state, *primitiveValue);
}
};
} // namespace Style
} // namespace WebCore
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