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/*
* Copyright (C) 2025 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,
* 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 "StyleCursor.h"
#include "CSSCursorImageValue.h"
#include "CSSPrimitiveValueMappings.h"
#include "CSSValueList.h"
#include "StyleBuilderChecking.h"
#include "StyleCursorImage.h"
#include "StyleInvalidImage.h"
namespace WebCore {
namespace Style {
// MARK: - Conversion
auto CSSValueConversion<Cursor>::operator()(BuilderState& state, const CSSValue& value) -> Cursor
{
if (is<CSSPrimitiveValue>(value))
return Cursor { fromCSSValue<CursorType>(value) };
auto list = requiredListDowncast<CSSValueList, CSSValue, 2>(state, value);
if (!list)
return CSS::Keyword::Auto { };
auto images = CursorImageList { CursorImageList::Container::createWithSizeFromGenerator(list->size() - 1, [&](auto index) {
Ref item = list->item(index);
RefPtr image = requiredDowncast<CSSCursorImageValue>(state, item);
if (!image)
return CursorImage { StyleInvalidImage::create() };
auto styleImage = image->createStyleImage(state);
if (!styleImage) {
state.setCurrentPropertyInvalidAtComputedValueTime();
return CursorImage { StyleInvalidImage::create() };
}
// Point outside the image is how we tell the cursor machinery there is no hot spot, and it should generate one (done in the Cursor class).
// FIXME: Would it be better to extend the concept of "no hot spot" deeper, into CursorImage and beyond, rather than using -1/-1 for it?
auto hotSpot = styleImage->hotSpot().value_or(IntPoint { -1, -1 });
return CursorImage { styleImage.releaseNonNull(), hotSpot };
}) };
return { WTFMove(images), fromCSSValue<CursorType>(list->item(list->size() - 1)) };
}
Ref<CSSValue> CSSValueCreation<CursorImage>::operator()(CSSValuePool&, const RenderStyle& style, const CursorImage& value)
{
Ref image = value.image;
return image->computedStyleValue(style);
}
// MARK: - Serialization
void Serialize<CursorImage>::operator()(StringBuilder& builder, const CSS::SerializationContext& context, const RenderStyle& style, const CursorImage& value)
{
Ref image = value.image;
Ref computedValue = image->computedStyleValue(style);
builder.append(computedValue->cssText(context));
}
// MARK: - Logging
TextStream& operator<<(TextStream& ts, const CursorImage& value)
{
return ts << "cursor image with hotspot " << value.hotSpot;
}
} // namespace Style
} // namespace WebCore
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