7c06c3fd14
Move ComputedProperties and CascadedProperties out of the GC. They no longer contain strong references to GC-managed data. Keep computed styles alive from DOM elements and animation updates with RefPtr. Pass style into layout constructors by reference, since layout only copies the values it needs while building nodes. Use GC::Weak for cascade source links, so entries no longer keep the style declaration or shadow root alive.
72 lines
2.5 KiB
C++
72 lines
2.5 KiB
C++
/*
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* Copyright (c) 2023, MacDue <macdue@dueutil.tech>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibURL/URL.h>
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#include <LibWeb/Bindings/SVGTextPathElement.h>
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#include <LibWeb/Layout/SVGTextPathBox.h>
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#include <LibWeb/SVG/AttributeNames.h>
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#include <LibWeb/SVG/SVGLength.h>
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#include <LibWeb/SVG/SVGTextPathElement.h>
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namespace Web::SVG {
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GC_DEFINE_ALLOCATOR(SVGTextPathElement);
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SVGTextPathElement::SVGTextPathElement(DOM::Document& document, DOM::QualifiedName qualified_name)
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: SVGTextContentElement(document, move(qualified_name))
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{
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}
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void SVGTextPathElement::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 == SVG::AttributeNames::startOffset)
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m_start_offset = AttributeParser::parse_number_percentage(value.value_or(String {}));
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}
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GC::Ptr<SVGGeometryElement const> SVGTextPathElement::path_or_shape() const
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{
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auto href = has_attribute(AttributeNames::href) ? get_attribute(AttributeNames::href) : get_attribute(AttributeNames::xlink_href);
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if (!href.has_value())
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return {};
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return try_resolve_url_to<SVGGeometryElement const>(*href);
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}
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// https://svgwg.org/svg2-draft/text.html#TextPathElementStartOffsetAttribute
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float SVGTextPathElement::start_offset_for_path_length(float path_length) const
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{
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if (!m_start_offset.has_value())
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return 0;
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return m_start_offset->resolve_relative_to(path_length);
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}
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// https://svgwg.org/svg2-draft/text.html#__svg__SVGTextPathElement__startOffset
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GC::Ref<SVGAnimatedLength> SVGTextPathElement::start_offset() const
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{
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auto base_length = SVGLength::create(realm(), 0, m_start_offset.value_or(NumberPercentage::create_number(0)).value(), SVGLength::ReadOnly::No);
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auto anim_length = SVGLength::create(realm(), 0, m_start_offset.value_or(NumberPercentage::create_number(0)).value(), SVGLength::ReadOnly::Yes);
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return SVGAnimatedLength::create(realm(), base_length, anim_length);
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}
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void SVGTextPathElement::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGTextPathElement);
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Base::initialize(realm);
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}
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void SVGTextPathElement::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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SVGURIReferenceMixin::visit_edges(visitor);
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}
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GC::Ptr<Layout::Node> SVGTextPathElement::create_layout_node(CSS::ComputedProperties const& style)
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{
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return heap().allocate<Layout::SVGTextPathBox>(document(), *this, style);
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}
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};
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