2bf1f41805
Move CSS animation values into a mutable overlay on computed properties and make base computed style data immutable after construction. Base style mutation now goes through a builder that is consumed on publish, so installed styles no longer expose mutation APIs. Build new base style data for inherited style updates instead of cloning and mutating installed computed properties. Element-specific computed style adjustments now run before publication, while animation and transition updates continue to mutate only the animated overlay.
75 lines
2.5 KiB
C++
75 lines
2.5 KiB
C++
/*
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* Copyright (c) 2023, Preston Taylor <95388976+PrestonLTaylor@users.noreply.github.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/Bindings/SVGSymbolElement.h>
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#include <LibWeb/CSS/ComputedProperties.h>
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#include <LibWeb/CSS/StyleValues/DisplayStyleValue.h>
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#include <LibWeb/DOM/ShadowRoot.h>
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#include <LibWeb/Layout/SVGGraphicsBox.h>
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#include <LibWeb/SVG/SVGSymbolElement.h>
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#include <LibWeb/SVG/SVGUseElement.h>
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namespace Web::SVG {
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GC_DEFINE_ALLOCATOR(SVGSymbolElement);
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SVGSymbolElement::SVGSymbolElement(DOM::Document& document, DOM::QualifiedName qualified_name)
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: SVGGraphicsElement(document, qualified_name)
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{
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}
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void SVGSymbolElement::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGSymbolElement);
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Base::initialize(realm);
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SVGFitToViewBox::initialize(realm);
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}
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void SVGSymbolElement::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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SVGFitToViewBox::visit_edges(visitor);
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}
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void SVGSymbolElement::adjust_computed_style(CSS::ComputedProperties::Builder& computed_properties)
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{
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Base::adjust_computed_style(computed_properties);
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if (is_direct_child_of_use_shadow_tree()) {
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// The generated instance of a ‘symbol’ that is the direct referenced element of a ‘use’ element must always have a computed value of inline for the display property.
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computed_properties.set_property(CSS::PropertyID::Display, CSS::DisplayStyleValue::create(CSS::Display::from_short(CSS::Display::Short::Inline)));
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}
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}
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void SVGSymbolElement::attribute_changed(FlyString const& name, Optional<String> const& old_value, Optional<String> const& value, Optional<FlyString> const& namespace_)
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{
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Base::attribute_changed(name, old_value, value, namespace_);
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SVGFitToViewBox::attribute_changed(*this, name, value);
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}
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bool SVGSymbolElement::is_direct_child_of_use_shadow_tree() const
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{
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auto maybe_shadow_root = parent();
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if (!is<DOM::ShadowRoot>(maybe_shadow_root)) {
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return false;
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}
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auto host = static_cast<DOM::ShadowRoot const&>(*maybe_shadow_root).host();
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return is<SVGUseElement>(host);
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}
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RefPtr<Layout::Node> SVGSymbolElement::create_layout_node(CSS::ComputedProperties const& style)
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{
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// https://svgwg.org/svg2-draft/render.html#TermNeverRenderedElement
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// [..] it also includes a ‘symbol’ element that is not the instance root of a use-element shadow tree.
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if (!is_direct_child_of_use_shadow_tree())
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return {};
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return make_ref_counted<Layout::SVGGraphicsBox>(document(), *this, style);
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}
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}
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