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https://github.com/LadybirdBrowser/ladybird.git
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a6dfc74e93
Before this change, we were going through the chain of base classes for each IDL interface object and having them set the prototype to their prototype. Instead of doing that, reorder things so that we set the right prototype immediately in Foo::initialize(), and then don't bother in all the base class overrides. This knocks off a ~1% profile item on Speedometer 3.
96 lines
3.5 KiB
C++
96 lines
3.5 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/SVGSymbolElementPrototype.h>
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#include <LibWeb/CSS/ComputedProperties.h>
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#include <LibWeb/CSS/StyleValues/CSSKeywordValue.h>
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#include <LibWeb/CSS/StyleValues/DisplayStyleValue.h>
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#include <LibWeb/CSS/StyleValues/ShorthandStyleValue.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/AttributeNames.h>
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#include <LibWeb/SVG/SVGAnimatedRect.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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m_view_box_for_bindings = realm.create<SVGAnimatedRect>(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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visitor.visit(m_view_box_for_bindings);
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}
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bool SVGSymbolElement::is_presentational_hint(FlyString const& name) const
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{
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if (Base::is_presentational_hint(name))
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return true;
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// FIXME: This is not a correct use of the presentational hint mechanism.
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if (is_direct_child_of_use_shadow_tree())
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return true;
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return false;
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}
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// https://svgwg.org/svg2-draft/struct.html#SymbolNotes
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void SVGSymbolElement::apply_presentational_hints(GC::Ref<CSS::CascadedProperties> cascaded_properties) const
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{
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Base::apply_presentational_hints(cascaded_properties);
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// FIXME: This is not a correct use of the presentational hint mechanism.
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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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cascaded_properties->set_property_from_presentational_hint(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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if (name.equals_ignoring_ascii_case(SVG::AttributeNames::viewBox)) {
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m_view_box = try_parse_view_box(value.value_or(String {}));
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m_view_box_for_bindings->set_nulled(!m_view_box.has_value());
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if (m_view_box.has_value()) {
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m_view_box_for_bindings->set_base_val(Gfx::DoubleRect { m_view_box->min_x, m_view_box->min_y, m_view_box->width, m_view_box->height });
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m_view_box_for_bindings->set_anim_val(Gfx::DoubleRect { m_view_box->min_x, m_view_box->min_y, m_view_box->width, m_view_box->height });
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}
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}
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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<const DOM::ShadowRoot&>(*maybe_shadow_root).host();
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return is<SVGUseElement>(host);
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}
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GC::Ptr<Layout::Node> SVGSymbolElement::create_layout_node(GC::Ref<CSS::ComputedProperties> style)
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{
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return heap().allocate<Layout::SVGGraphicsBox>(document(), *this, move(style));
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}
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}
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