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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.
*/
#include "config.h"
#include "StyleTabSize.h"
#include "StyleBuilderChecking.h"
#include "StylePrimitiveNumericTypes+Blending.h"
#include "StylePrimitiveNumericTypes+CSSValueConversion.h"
#include "StylePrimitiveNumericTypes+Evaluation.h"
#include "TabSize.h"
namespace WebCore {
namespace Style {
using namespace CSS::Literals;
auto CSSValueConversion<TabSize>::operator()(BuilderState& state, const CSSValue& value) -> TabSize
{
RefPtr primitiveValue = requiredDowncast<CSSPrimitiveValue>(state, value);
if (!primitiveValue)
return 8_css_number;
if (primitiveValue->isNumber())
return toStyleFromCSSValue<TabSize::Spaces>(state, *primitiveValue);
return toStyleFromCSSValue<TabSize::Length>(state, *primitiveValue);
}
// MARK: - Blending
auto Blending<TabSize>::canBlend(const TabSize& a, const TabSize& b) -> bool
{
return a.hasSameType(b);
}
auto Blending<TabSize>::blend(const TabSize& a, const TabSize& b, const BlendingContext& context) -> TabSize
{
if (context.isDiscrete) {
ASSERT(!context.progress || context.progress == 1);
return context.progress ? b : a;
}
ASSERT(canBlend(a, b));
if (a.isSpaces()) {
ASSERT(b.isSpaces());
return Style::blend(std::get<TabSize::Spaces>(a.m_value), std::get<TabSize::Spaces>(b.m_value), context);
} else {
ASSERT(a.isLength());
ASSERT(b.isLength());
return Style::blend(std::get<TabSize::Length>(a.m_value), std::get<TabSize::Length>(b.m_value), context);
}
}
// MARK: - Platform
auto ToPlatform<TabSize>::operator()(const TabSize& value) -> WebCore::TabSize
{
return WTF::switchOn(value,
[](const TabSize::Spaces& spaces) {
return WebCore::TabSize { spaces.value, SpaceValueType };
},
[](const TabSize::Length& length) {
return WebCore::TabSize { evaluate<float>(length, ZoomNeeded { }), LengthValueType };
}
);
}
} // namespace Style
} // namespace WebCore
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