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/*
* Copyright (C) 2024 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 "StyleRectFunction.h"
#include "StylePrimitiveNumericTypes+Conversions.h"
#include "StylePrimitiveNumericTypes+Evaluation.h"
namespace WebCore {
namespace Style {
using namespace CSS::Literals;
// MARK: - Conversion
auto ToStyle<CSS::Rect>::operator()(const CSS::Rect& value, const BuilderState& state) -> Inset
{
// "An auto value makes the edge of the box coincide with the corresponding edge of the
// reference box: it’s equivalent to 0% as the first (top) or fourth (left) value, and
// equivalent to 100% as the second (right) or third (bottom) value."
// (https://drafts.csswg.org/css-shapes-1/#funcdef-basic-shape-rect)
// Conversion applies reflection to the trailing (right/bottom) edges to convert from rect()
// form to inset() form. This means that all the `auto` values are converted to 0%.
auto convertLeadingEdge = [&](const std::variant<CSS::LengthPercentage<>, CSS::Keyword::Auto>& edge) -> LengthPercentage<> {
return WTF::switchOn(edge,
[&](const CSS::LengthPercentage<>& value) -> LengthPercentage<> {
return toStyle(value, state);
},
[&](const CSS::Keyword::Auto&) -> LengthPercentage<> {
return 0_css_percentage;
}
);
};
auto convertTrailingEdge = [&](const std::variant<CSS::LengthPercentage<>, CSS::Keyword::Auto>& edge) -> LengthPercentage<> {
return WTF::switchOn(edge,
[&](const CSS::LengthPercentage<>& value) -> LengthPercentage<> {
return reflect(toStyle(value, state));
},
[&](const CSS::Keyword::Auto&) -> LengthPercentage<> {
return 0_css_percentage;
}
);
};
return {
.insets = {
convertLeadingEdge(value.edges.top()),
convertTrailingEdge(value.edges.right()),
convertTrailingEdge(value.edges.bottom()),
convertLeadingEdge(value.edges.left()),
},
.radii = toStyle(value.radii, state)
};
}
auto ToStyle<CSS::RectFunction>::operator()(const CSS::RectFunction& value, const BuilderState& state) -> InsetFunction
{
return { toStyle(value.parameters, state) };
}
} // namespace Style
} // namespace WebCore
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