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/*
* Copyright (C) 2012-2021 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 APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "CSSImageSetValue.h"
#include "CSSImageSetOptionValue.h"
#include "CSSImageValue.h"
#include "CSSPrimitiveValue.h"
#include "StyleBuilderState.h"
#include "StyleImageSet.h"
#include <numeric>
#include <wtf/text/StringBuilder.h>
namespace WebCore {
Ref<CSSImageSetValue> CSSImageSetValue::create(CSSValueListBuilder builder)
{
return adoptRef(*new CSSImageSetValue(WTFMove(builder)));
}
CSSImageSetValue::CSSImageSetValue(CSSValueListBuilder builder)
: CSSValueContainingVector(ClassType::ImageSet, CommaSeparator, WTFMove(builder))
{
}
String CSSImageSetValue::customCSSText(const CSS::SerializationContext& context) const
{
StringBuilder result;
result.append("image-set("_s);
for (size_t i = 0; i < this->length(); ++i) {
if (i > 0)
result.append(", "_s);
ASSERT(is<CSSImageSetOptionValue>(item(i)));
result.append(item(i)->cssText(context));
}
result.append(')');
return result.toString();
}
RefPtr<StyleImage> CSSImageSetValue::createStyleImage(const Style::BuilderState& state) const
{
size_t length = this->length();
Vector<ImageWithScale> images(length, [&](size_t i) {
auto option = downcast<CSSImageSetOptionValue>(item(i));
return ImageWithScale { state.createStyleImage(option->image()), option->resolution()->resolveAsResolution<float>(state.cssToLengthConversionData()), option->type() };
});
// Sort the images so that they are stored in order from lowest resolution to highest.
// We want to maintain the authored order for serialization so we create a sorted indexing vector.
Vector<size_t> sortedIndices(length);
std::iota(sortedIndices.begin(), sortedIndices.end(), 0);
std::stable_sort(sortedIndices.begin(), sortedIndices.end(), [&images](size_t lhs, size_t rhs) {
return images[lhs].scaleFactor < images[rhs].scaleFactor;
});
return StyleImageSet::create(WTFMove(images), WTFMove(sortedIndices));
}
} // namespace WebCore
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