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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.
108 lines
4.7 KiB
C++
108 lines
4.7 KiB
C++
/*
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* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibGfx/Path.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/Bindings/SVGLineElementPrototype.h>
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#include <LibWeb/Layout/Node.h>
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#include <LibWeb/SVG/AttributeNames.h>
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#include <LibWeb/SVG/AttributeParser.h>
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#include <LibWeb/SVG/SVGLineElement.h>
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namespace Web::SVG {
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GC_DEFINE_ALLOCATOR(SVGLineElement);
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SVGLineElement::SVGLineElement(DOM::Document& document, DOM::QualifiedName qualified_name)
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: SVGGeometryElement(document, qualified_name)
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{
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}
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void SVGLineElement::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGLineElement);
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Base::initialize(realm);
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}
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void SVGLineElement::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::x1) {
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m_x1 = AttributeParser::parse_number_percentage(value.value_or(String {}));
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} else if (name == SVG::AttributeNames::y1) {
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m_y1 = AttributeParser::parse_number_percentage(value.value_or(String {}));
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} else if (name == SVG::AttributeNames::x2) {
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m_x2 = AttributeParser::parse_number_percentage(value.value_or(String {}));
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} else if (name == SVG::AttributeNames::y2) {
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m_y2 = AttributeParser::parse_number_percentage(value.value_or(String {}));
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}
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if (name.is_one_of(SVG::AttributeNames::x1, SVG::AttributeNames::y1, SVG::AttributeNames::x2, SVG::AttributeNames::y2))
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set_needs_layout_update(DOM::SetNeedsLayoutReason::StyleChange);
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}
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Gfx::Path SVGLineElement::get_path(CSSPixelSize viewport_size)
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{
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auto const viewport_width = viewport_size.width().to_float();
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auto const viewport_height = viewport_size.height().to_float();
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Gfx::Path path;
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float const x1 = m_x1.value_or({ 0, false }).resolve_relative_to(viewport_width);
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float const y1 = m_y1.value_or({ 0, false }).resolve_relative_to(viewport_height);
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float const x2 = m_x2.value_or({ 0, false }).resolve_relative_to(viewport_width);
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float const y2 = m_y2.value_or({ 0, false }).resolve_relative_to(viewport_height);
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// 1. perform an absolute moveto operation to absolute location (x1,y1)
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path.move_to({ x1, y1 });
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// 2. perform an absolute lineto operation to absolute location (x2,y2)
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path.line_to({ x2, y2 });
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return path;
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}
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// https://www.w3.org/TR/SVG11/shapes.html#LineElementX1Attribute
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GC::Ref<SVGAnimatedLength> SVGLineElement::x1() const
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{
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// FIXME: Populate the unit type when it is parsed (0 here is "unknown").
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// FIXME: Create a proper animated value when animations are supported.
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auto base_length = SVGLength::create(realm(), 0, m_x1.value_or({ 0, false }).value(), SVGLength::ReadOnly::No);
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auto anim_length = SVGLength::create(realm(), 0, m_x1.value_or({ 0, false }).value(), SVGLength::ReadOnly::Yes);
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return SVGAnimatedLength::create(realm(), base_length, anim_length);
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}
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// https://www.w3.org/TR/SVG11/shapes.html#LineElementY1Attribute
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GC::Ref<SVGAnimatedLength> SVGLineElement::y1() const
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{
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// FIXME: Populate the unit type when it is parsed (0 here is "unknown").
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// FIXME: Create a proper animated value when animations are supported.
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auto base_length = SVGLength::create(realm(), 0, m_y1.value_or({ 0, false }).value(), SVGLength::ReadOnly::No);
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auto anim_length = SVGLength::create(realm(), 0, m_y1.value_or({ 0, false }).value(), SVGLength::ReadOnly::Yes);
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return SVGAnimatedLength::create(realm(), base_length, anim_length);
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}
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// https://www.w3.org/TR/SVG11/shapes.html#LineElementX2Attribute
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GC::Ref<SVGAnimatedLength> SVGLineElement::x2() const
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{
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// FIXME: Populate the unit type when it is parsed (0 here is "unknown").
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// FIXME: Create a proper animated value when animations are supported.
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auto base_length = SVGLength::create(realm(), 0, m_x2.value_or({ 0, false }).value(), SVGLength::ReadOnly::No);
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auto anim_length = SVGLength::create(realm(), 0, m_x2.value_or({ 0, false }).value(), SVGLength::ReadOnly::Yes);
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return SVGAnimatedLength::create(realm(), base_length, anim_length);
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}
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// https://www.w3.org/TR/SVG11/shapes.html#LineElementY2Attribute
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GC::Ref<SVGAnimatedLength> SVGLineElement::y2() const
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{
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// FIXME: Populate the unit type when it is parsed (0 here is "unknown").
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// FIXME: Create a proper animated value when animations are supported.
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auto base_length = SVGLength::create(realm(), 0, m_y2.value_or({ 0, false }).value(), SVGLength::ReadOnly::No);
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auto anim_length = SVGLength::create(realm(), 0, m_y2.value_or({ 0, false }).value(), SVGLength::ReadOnly::Yes);
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return SVGAnimatedLength::create(realm(), base_length, anim_length);
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}
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}
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