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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 "StyleInsetFunction.h"
#include "FloatRect.h"
#include "GeometryUtilities.h"
#include "Path.h"
#include "StylePrimitiveNumericTypes+Evaluation.h"
#include <wtf/TinyLRUCache.h>
namespace WebCore {
namespace Style {
// MARK: - Path Caching
struct RoundedInsetPathPolicy : public TinyLRUCachePolicy<FloatRoundedRect, WebCore::Path> {
public:
static bool isKeyNull(const FloatRoundedRect& rect)
{
return rect.isEmpty();
}
static WebCore::Path createValueForKey(const FloatRoundedRect& rect)
{
WebCore::Path path;
path.addRoundedRect(rect, PathRoundedRect::Strategy::PreferBezier);
return path;
}
};
static const WebCore::Path& cachedRoundedInsetPath(const FloatRoundedRect& rect)
{
static NeverDestroyed<TinyLRUCache<FloatRoundedRect, WebCore::Path, 4, RoundedInsetPathPolicy>> cache;
return cache.get().get(rect);
}
// MARK: - Path
WebCore::Path PathComputation<Inset>::operator()(const Inset& value, const FloatRect& boundingBox)
{
auto boundingSize = boundingBox.size();
auto left = evaluate(value.insets.left(), boundingSize.width());
auto top = evaluate(value.insets.top(), boundingSize.height());
auto rect = FloatRect {
left + boundingBox.x(),
top + boundingBox.y(),
std::max<float>(boundingSize.width() - left - evaluate(value.insets.right(), boundingSize.width()), 0),
std::max<float>(boundingSize.height() - top - evaluate(value.insets.bottom(), boundingSize.height()), 0)
};
auto radii = evaluate(value.radii, boundingSize);
radii.scale(calcBorderRadiiConstraintScaleFor(rect, radii));
return cachedRoundedInsetPath(FloatRoundedRect { rect, radii });
}
} // namespace Style
} // namespace WebCore
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