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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 "CSSBorderRadius.h"
#include "CSSPrimitiveNumericTypes+Serialization.h"
#include <wtf/text/StringBuilder.h>
namespace WebCore {
namespace CSS {
static bool hasDefaultValueForAxis(const SpaceSeparatedArray<LengthPercentage<Nonnegative>, 4>& values)
{
return values.value[3] == values.value[1]
&& values.value[2] == values.value[0]
&& values.value[1] == values.value[0]
&& values.value[0] == 0_css_px;
}
bool hasDefaultValue(const BorderRadius& borderRadius)
{
return hasDefaultValueForAxis(borderRadius.horizontal) && hasDefaultValueForAxis(borderRadius.vertical);
}
static std::pair<SpaceSeparatedVector<LengthPercentage<Nonnegative>, 4>, bool> gatherSerializableRadiiForAxis(const SpaceSeparatedArray<LengthPercentage<Nonnegative>, 4>& values)
{
bool isDefaultValue = false;
SpaceSeparatedVector<LengthPercentage<Nonnegative>, 4>::Vector result;
result.append(values.value[0]);
if (values.value[3] != values.value[1]) {
result.append(values.value[1]);
result.append(values.value[2]);
result.append(values.value[3]);
} else if (values.value[2] != values.value[0]) {
result.append(values.value[1]);
result.append(values.value[2]);
} else if (values.value[1] != values.value[0]) {
result.append(values.value[1]);
} else {
isDefaultValue = result[0] == 0_css_px;
}
return { { WTFMove(result) }, isDefaultValue };
}
void Serialize<BorderRadius>::operator()(StringBuilder& builder, const SerializationContext& context, const BorderRadius& borderRadius)
{
// <'border-radius'> = <length-percentage [0,∞]>{1,4} [ / <length-percentage [0,∞]>{1,4} ]?
auto [horizontal, horizontalIsDefault] = gatherSerializableRadiiForAxis(borderRadius.horizontal);
auto [vertical, verticalIsDefault] = gatherSerializableRadiiForAxis(borderRadius.vertical);
if (!horizontalIsDefault || !verticalIsDefault) {
serializationForCSS(builder, context, horizontal);
if (horizontal != vertical) {
builder.append(" / "_s);
serializationForCSS(builder, context, vertical);
}
}
}
} // namespace CSS
} // namespace WebCore
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