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/*
* Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
* Copyright (C) 2024-2026 Apple Inc. All rights reserved.
*
* 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE
* COPYRIGHT HOLDER 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 "CornerRadii.h"
#include <wtf/TZoneMallocInlines.h>
#include <wtf/text/TextStream.h>
namespace WebCore {
WTF_MAKE_TZONE_ALLOCATED_IMPL(CornerRadii);
bool CornerRadii::hasEvenCorners() const
{
return areEssentiallyEqual(m_topLeft, m_topRight)
&& areEssentiallyEqual(m_topLeft, m_bottomLeft)
&& areEssentiallyEqual(m_topLeft, m_bottomRight);
}
bool CornerRadii::isUniformCornerRadius() const
{
return WTF::areEssentiallyEqual(m_topLeft.width(), m_topLeft.height()) && hasEvenCorners();
}
void CornerRadii::scale(float factor)
{
scale(factor, factor);
}
void CornerRadii::scale(float horizontalFactor, float verticalFactor)
{
if (horizontalFactor == 1 && verticalFactor == 1)
return;
// If either radius on a corner becomes zero, reset both radii on that corner.
m_topLeft.scale(horizontalFactor, verticalFactor);
if (!m_topLeft.width() || !m_topLeft.height())
m_topLeft = FloatSize();
m_topRight.scale(horizontalFactor, verticalFactor);
if (!m_topRight.width() || !m_topRight.height())
m_topRight = FloatSize();
m_bottomLeft.scale(horizontalFactor, verticalFactor);
if (!m_bottomLeft.width() || !m_bottomLeft.height())
m_bottomLeft = FloatSize();
m_bottomRight.scale(horizontalFactor, verticalFactor);
if (!m_bottomRight.width() || !m_bottomRight.height())
m_bottomRight = FloatSize();
}
void CornerRadii::expand(float topWidth, float bottomWidth, float leftWidth, float rightWidth)
{
if (m_topLeft.width() > 0 && m_topLeft.height() > 0) {
m_topLeft.setWidth(std::max<float>(0, m_topLeft.width() + leftWidth));
m_topLeft.setHeight(std::max<float>(0, m_topLeft.height() + topWidth));
}
if (m_topRight.width() > 0 && m_topRight.height() > 0) {
m_topRight.setWidth(std::max<float>(0, m_topRight.width() + rightWidth));
m_topRight.setHeight(std::max<float>(0, m_topRight.height() + topWidth));
}
if (m_bottomLeft.width() > 0 && m_bottomLeft.height() > 0) {
m_bottomLeft.setWidth(std::max<float>(0, m_bottomLeft.width() + leftWidth));
m_bottomLeft.setHeight(std::max<float>(0, m_bottomLeft.height() + bottomWidth));
}
if (m_bottomRight.width() > 0 && m_bottomRight.height() > 0) {
m_bottomRight.setWidth(std::max<float>(0, m_bottomRight.width() + rightWidth));
m_bottomRight.setHeight(std::max<float>(0, m_bottomRight.height() + bottomWidth));
}
}
void CornerRadii::expandEvenIfZero(float size)
{
auto expand = [&](auto& corner) {
corner.setWidth(std::max(0.f, corner.width() + size));
corner.setHeight(std::max(0.f, corner.height() + size));
};
expand(m_topLeft);
expand(m_topRight);
expand(m_bottomLeft);
expand(m_bottomRight);
}
TextStream& operator<<(TextStream& ts, const CornerRadii& cornerRadii)
{
ts.dumpProperty("top-left"_s, cornerRadii.topLeft());
ts.dumpProperty("top-right"_s, cornerRadii.topRight());
ts.dumpProperty("bottom-left"_s, cornerRadii.bottomLeft());
ts.dumpProperty("bottom-right"_s, cornerRadii.bottomRight());
return ts;
}
} // namespace WebCore
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