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55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
/*
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* Copyright (c) 2023, Andreas Kling <andreas@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Variant.h>
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#include <LibURL/URL.h>
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#include <LibWeb/CSS/CalculatedOr.h>
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namespace Web::HTML {
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// https://html.spec.whatwg.org/multipage/images.html#image-source
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struct ImageSource {
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struct PixelDensityDescriptorValue {
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double value { 0 };
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};
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struct WidthDescriptorValue {
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CSSPixels value { 0 };
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};
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String url;
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Variant<Empty, PixelDensityDescriptorValue, WidthDescriptorValue> descriptor;
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};
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struct ImageSourceAndPixelDensity {
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ImageSource source;
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double pixel_density { 1.0f };
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};
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// https://html.spec.whatwg.org/multipage/images.html#source-set
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struct SourceSet {
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static SourceSet create(DOM::Element const& element, String const& default_source, String const& srcset, String const& sizes, HTML::HTMLImageElement const* img = nullptr);
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[[nodiscard]] bool is_empty() const;
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// https://html.spec.whatwg.org/multipage/images.html#select-an-image-source-from-a-source-set
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[[nodiscard]] ImageSourceAndPixelDensity select_an_image_source();
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// https://html.spec.whatwg.org/multipage/images.html#normalise-the-source-densities
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void normalize_source_densities(DOM::Element const&);
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SourceSet();
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Vector<ImageSource> m_sources;
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CSS::LengthOrCalculated m_source_size;
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};
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SourceSet parse_a_srcset_attribute(StringView);
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[[nodiscard]] CSS::LengthOrCalculated parse_a_sizes_attribute(DOM::Element const& element, StringView sizes, HTML::HTMLImageElement const* img = nullptr);
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}
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