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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,
* 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 "StyleVerticalAlign.h"
#include "AnimationUtilities.h"
#include "CSSPrimitiveValue.h"
#include "StyleBuilderChecking.h"
#include "StyleLengthWrapper+Blending.h"
#include "StyleLengthWrapper+CSSValueConversion.h"
#include "StylePrimitiveNumericTypes+Blending.h"
#include "StylePrimitiveNumericTypes+CSSValueConversion.h"
namespace WebCore {
namespace Style {
auto CSSValueConversion<VerticalAlign>::operator()(BuilderState& state, const CSSValue& value) -> VerticalAlign
{
RefPtr primitiveValue = requiredDowncast<CSSPrimitiveValue>(state, value);
if (!primitiveValue)
return CSS::Keyword::Baseline { };
if (primitiveValue->isValueID()) {
switch (primitiveValue->valueID()) {
case CSSValueBaseline:
return CSS::Keyword::Baseline { };
case CSSValueSub:
return CSS::Keyword::Sub { };
case CSSValueSuper:
return CSS::Keyword::Super { };
case CSSValueTop:
return CSS::Keyword::Top { };
case CSSValueTextTop:
return CSS::Keyword::TextTop { };
case CSSValueMiddle:
return CSS::Keyword::Middle { };
case CSSValueBottom:
return CSS::Keyword::Bottom { };
case CSSValueTextBottom:
return CSS::Keyword::TextBottom { };
case CSSValueWebkitBaselineMiddle:
return CSS::Keyword::WebkitBaselineMiddle { };
default:
break;
}
state.setCurrentPropertyInvalidAtComputedValueTime();
return CSS::Keyword::Baseline { };
}
return toStyleFromCSSValue<VerticalAlignLength>(state, *primitiveValue);
}
// MARK: - Blending
auto Blending<VerticalAlign>::canBlend(const VerticalAlign& a, const VerticalAlign& b) -> bool
{
return a.m_value.index() == b.m_value.index();
}
auto Blending<VerticalAlign>::requiresInterpolationForAccumulativeIteration(const VerticalAlign& a, const VerticalAlign& b) -> bool
{
if (a.m_value.index() != b.m_value.index())
return true;
if (!a.isLength())
return false;
return Style::requiresInterpolationForAccumulativeIteration(*a.tryLength(), *b.tryLength());
}
auto Blending<VerticalAlign>::blend(const VerticalAlign& a, const VerticalAlign& b, const BlendingContext& context) -> VerticalAlign
{
if (!a.isLength() || !b.isLength())
return context.progress < 0.5 ? a : b;
ASSERT(canBlend(a, b));
return Style::blend(*a.tryLength(), *b.tryLength(), context);
}
} // namespace Style
} // namespace WebCore
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