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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 "StyleBoxShadow.h"
#include "ColorBlending.h"
#include "RenderStyle.h"
#include "StylePrimitiveNumericTypes+Blending.h"
#include "StylePrimitiveNumericTypes+Conversions.h"
#include "StylePrimitiveNumericTypes+Evaluation.h"
namespace WebCore {
namespace Style {
// MARK: - Conversion
auto ToCSS<BoxShadow>::operator()(const BoxShadow& value, const RenderStyle& style) -> CSS::BoxShadow
{
return {
.color = toCSS(value.color, style),
.location = toCSS(value.location, style),
.blur = toCSS(value.blur, style),
.spread = toCSS(value.spread, style),
.inset = toCSS(value.inset, style),
.isWebkitBoxShadow = value.isWebkitBoxShadow,
};
}
auto ToStyle<CSS::BoxShadow>::operator()(const CSS::BoxShadow& value, const BuilderState& state) -> BoxShadow
{
return {
.color = value.color ? toStyle(*value.color, state) : Color::currentColor(),
.location = toStyle(value.location, state),
.blur = value.blur ? toStyle(*value.blur, state) : 0_css_px,
.spread = value.spread ? toStyle(*value.spread, state) : 0_css_px,
.inset = toStyle(value.inset, state),
.isWebkitBoxShadow = value.isWebkitBoxShadow,
};
}
// MARK: - Blending
static inline std::optional<CSS::Keyword::Inset> blendInset(std::optional<CSS::Keyword::Inset> a, std::optional<CSS::Keyword::Inset> b, const BlendingContext& context)
{
if (a == b)
return b;
auto aVal = !a ? 1.0 : 0.0;
auto bVal = !b ? 1.0 : 0.0;
auto result = WebCore::blend(aVal, bVal, context);
return result > 0 ? std::nullopt : std::make_optional(CSS::Keyword::Inset { });
}
auto Blending<BoxShadow>::canBlend(const BoxShadow&, const BoxShadow&, const RenderStyle&, const RenderStyle&) -> bool
{
return true;
}
auto Blending<BoxShadow>::blend(const BoxShadow& a, const BoxShadow& b, const RenderStyle& aStyle, const RenderStyle& bStyle, const BlendingContext& context) -> BoxShadow
{
return {
.color = WebCore::blend(aStyle.colorResolvingCurrentColor(a.color), bStyle.colorResolvingCurrentColor(b.color), context),
.location = WebCore::Style::blend(a.location, b.location, context),
.blur = WebCore::Style::blend(a.blur, b.blur, context),
.spread = WebCore::Style::blend(a.spread, b.spread, context),
.inset = blendInset(a.inset, b.inset, context),
.isWebkitBoxShadow = b.isWebkitBoxShadow
};
}
} // namespace Style
} // namespace WebCore
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