9b79a686eb
The main motivation behind this is to remove JS specifics of the Realm from the implementation of the Heap. As a side effect of this change, this is a bit nicer to read than the previous approach, and in my opinion, also makes it a little more clear that this method is specific to a JavaScript Realm.
82 lines
3 KiB
C++
82 lines
3 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/StyleProperties.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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JS_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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Base::initialize(realm);
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WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGSymbolElement);
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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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// https://svgwg.org/svg2-draft/struct.html#SymbolNotes
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void SVGSymbolElement::apply_presentational_hints(CSS::StyleProperties& style) const
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{
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Base::apply_presentational_hints(style);
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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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style.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)
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{
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Base::attribute_changed(name, old_value, value);
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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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JS::GCPtr<Layout::Node> SVGSymbolElement::create_layout_node(CSS::StyleProperties style)
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{
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return heap().allocate_without_realm<Layout::SVGGraphicsBox>(document(), *this, move(style));
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}
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}
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