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b981e6f7bc
Many times, attribute mutation doesn't necessitate a full style invalidation on the element. However, the conditions are pretty elaborate, so this first version has a lot of false positives. We only need to invalidate style when any of these things apply: 1. The change may affect the match state of a selector somewhere. 2. The change may affect presentational hints applied to the element. For (1) in this first version, we have a fixed list of attribute names that may affect selectors. We also collect all names referenced by attribute selectors anywhere in the document. For (2), we add a new Element::is_presentational_hint() virtual that tells us whether a given attribute name is a presentational hint. This drastically reduces style work on many websites. As an example, https://cnn.com/ is once again browseable.
43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
/*
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* Copyright (c) 2022, 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 <LibWeb/SVG/SVGGraphicsElement.h>
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namespace Web::SVG {
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// https://svgwg.org/svg2-draft/embedded.html#InterfaceSVGForeignObjectElement
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class SVGForeignObjectElement final : public SVGGraphicsElement {
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WEB_PLATFORM_OBJECT(SVGForeignObjectElement, SVGGraphicsElement);
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GC_DECLARE_ALLOCATOR(SVGForeignObjectElement);
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public:
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virtual ~SVGForeignObjectElement() override;
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virtual GC::Ptr<Layout::Node> create_layout_node(GC::Ref<CSS::ComputedProperties>) override;
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GC::Ref<SVG::SVGAnimatedLength> x();
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GC::Ref<SVG::SVGAnimatedLength> y();
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GC::Ref<SVG::SVGAnimatedLength> width();
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GC::Ref<SVG::SVGAnimatedLength> height();
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private:
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SVGForeignObjectElement(DOM::Document& document, DOM::QualifiedName qualified_name);
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virtual void initialize(JS::Realm&) override;
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virtual void visit_edges(Cell::Visitor&) override;
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virtual bool is_presentational_hint(FlyString const&) const override;
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virtual void apply_presentational_hints(GC::Ref<CSS::CascadedProperties>) const override;
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GC::Ptr<SVG::SVGAnimatedLength> m_x;
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GC::Ptr<SVG::SVGAnimatedLength> m_y;
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GC::Ptr<SVG::SVGAnimatedLength> m_width;
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GC::Ptr<SVG::SVGAnimatedLength> m_height;
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};
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}
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