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/*
* Copyright (C) 2022 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 HOLDER "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 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 "StyleGradientImage.h"
#include "CSSGradientValue.h"
#include "GeneratedImage.h"
#include "GradientImage.h"
#include "NodeRenderStyle.h"
#include "RenderElement.h"
#include "RenderStyleInlines.h"
#include "StylePrimitiveNumericTypes+Conversions.h"
namespace WebCore {
StyleGradientImage::StyleGradientImage(Style::Gradient&& gradient)
: StyleGeneratedImage { Type::GradientImage, StyleGradientImage::isFixedSize }
, m_gradient { WTFMove(gradient) }
, m_knownCacheableBarringFilter { Style::stopsAreCacheable(m_gradient) }
{
}
StyleGradientImage::~StyleGradientImage() = default;
bool StyleGradientImage::operator==(const StyleImage& other) const
{
auto* otherGradientImage = dynamicDowncast<StyleGradientImage>(other);
return otherGradientImage && equals(*otherGradientImage);
}
bool StyleGradientImage::equals(const StyleGradientImage& other) const
{
return m_gradient == other.m_gradient;
}
Ref<CSSValue> StyleGradientImage::computedStyleValue(const RenderStyle& style) const
{
return CSSGradientValue::create(Style::toCSS(m_gradient, style));
}
bool StyleGradientImage::isPending() const
{
return false;
}
void StyleGradientImage::load(CachedResourceLoader&, const ResourceLoaderOptions&)
{
}
RefPtr<Image> StyleGradientImage::image(const RenderElement* renderer, const FloatSize& size, bool isForFirstLine) const
{
if (!renderer)
return &Image::nullImage();
if (size.isEmpty())
return nullptr;
auto& style = isForFirstLine ? renderer->firstLineStyle() : renderer->style();
bool cacheable = m_knownCacheableBarringFilter && !style.hasAppleColorFilter();
if (cacheable) {
if (auto* result = const_cast<StyleGradientImage&>(*this).cachedImageForSize(size))
return result;
}
auto gradient = Style::createPlatformGradient(m_gradient, size, style);
auto newImage = GradientImage::create(WTFMove(gradient), size);
if (cacheable)
const_cast<StyleGradientImage&>(*this).saveCachedImageForSize(size, newImage);
return newImage;
}
bool StyleGradientImage::knownToBeOpaque(const RenderElement& renderer) const
{
return Style::isOpaque(m_gradient, renderer.style());
}
FloatSize StyleGradientImage::fixedSize(const RenderElement&) const
{
return { };
}
} // namespace WebCore
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