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a146225331
Add unsafe_layout_node(), unsafe_paintable(), and unsafe_paintable_box() accessors that skip layout-staleness verification. These are for use in contexts where accessing layout/paintable data is legitimate despite layout not being up to date: tree construction, style recalculation, painting, animation interpolation, DOM mutation, and invalidation propagation. Also add wrapper APIs on Node to centralize common patterns: - set_needs_display() wraps if (unsafe_paintable()) ...set_needs_display - set_needs_paint_only_properties_update() wraps similar - set_needs_layout_update() wraps if (unsafe_layout_node()) ... And add Document::layout_is_up_to_date() which checks whether layout tree update flags are all clear.
61 lines
1.9 KiB
C++
61 lines
1.9 KiB
C++
/*
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* Copyright (c) 2022, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2023, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.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/SVGTextContentElementPrototype.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/Layout/Node.h>
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#include <LibWeb/SVG/AttributeParser.h>
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#include <LibWeb/SVG/SVGTextContentElement.h>
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namespace Web::SVG {
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SVGTextContentElement::SVGTextContentElement(DOM::Document& document, DOM::QualifiedName qualified_name)
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: SVGGraphicsElement(document, move(qualified_name))
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{
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}
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void SVGTextContentElement::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGTextContentElement);
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Base::initialize(realm);
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}
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// NB: Called during painting.
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Optional<TextAnchor> SVGTextContentElement::text_anchor() const
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{
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if (!unsafe_layout_node())
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return {};
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switch (unsafe_layout_node()->computed_values().text_anchor()) {
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case CSS::TextAnchor::Start:
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return TextAnchor::Start;
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case CSS::TextAnchor::Middle:
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return TextAnchor::Middle;
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case CSS::TextAnchor::End:
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return TextAnchor::End;
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default:
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VERIFY_NOT_REACHED();
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}
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}
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Utf16String SVGTextContentElement::text_contents() const
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{
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return child_text_content().trim_ascii_whitespace();
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}
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// https://svgwg.org/svg2-draft/text.html#__svg__SVGTextContentElement__getNumberOfChars
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WebIDL::ExceptionOr<WebIDL::Long> SVGTextContentElement::get_number_of_chars() const
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{
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return static_cast<WebIDL::Long>(text_contents().length_in_code_units());
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}
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GC::Ref<Geometry::DOMPoint> SVGTextContentElement::get_start_position_of_char(WebIDL::UnsignedLong charnum)
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{
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dbgln("(STUBBED) SVGTextContentElement::get_start_position_of_char(charnum={}). Called on: {}", charnum, debug_description());
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return Geometry::DOMPoint::from_point(vm(), Geometry::DOMPointInit {});
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}
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}
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