2692db8699
Note that as of this commit, there aren't any such throwers, and the call site in Heap::allocate will drop exceptions on the floor. This commit only serves to change the declaration of the overrides, make sure they return an empty value, and to propagate OOM errors frm their base initialize invocations.
112 lines
3.7 KiB
C++
112 lines
3.7 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 <LibWeb/Bindings/Intrinsics.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/SVGCircleElement.h>
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namespace Web::SVG {
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SVGCircleElement::SVGCircleElement(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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JS::ThrowCompletionOr<void> SVGCircleElement::initialize(JS::Realm& realm)
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{
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MUST_OR_THROW_OOM(Base::initialize(realm));
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set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGCircleElementPrototype>(realm, "SVGCircleElement"));
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return {};
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}
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void SVGCircleElement::parse_attribute(DeprecatedFlyString const& name, DeprecatedString const& value)
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{
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SVGGeometryElement::parse_attribute(name, value);
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if (name == SVG::AttributeNames::cx) {
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m_center_x = AttributeParser::parse_coordinate(value);
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m_path.clear();
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} else if (name == SVG::AttributeNames::cy) {
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m_center_y = AttributeParser::parse_coordinate(value);
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m_path.clear();
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} else if (name == SVG::AttributeNames::r) {
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m_radius = AttributeParser::parse_positive_length(value);
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m_path.clear();
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}
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}
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Gfx::Path& SVGCircleElement::get_path()
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{
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if (m_path.has_value())
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return m_path.value();
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float cx = m_center_x.value_or(0);
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float cy = m_center_y.value_or(0);
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float r = m_radius.value_or(0);
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Gfx::Path path;
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// A zero radius disables rendering.
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if (r == 0) {
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m_path = move(path);
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return m_path.value();
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}
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bool large_arc = false;
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bool sweep = true;
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// 1. A move-to command to the point cx+r,cy;
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path.move_to({ cx + r, cy });
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// 2. arc to cx,cy+r;
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path.arc_to({ cx, cy + r }, r, large_arc, sweep);
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// 3. arc to cx-r,cy;
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path.arc_to({ cx - r, cy }, r, large_arc, sweep);
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// 4. arc to cx,cy-r;
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path.arc_to({ cx, cy - r }, r, large_arc, sweep);
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// 5. arc with a segment-completing close path operation.
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path.arc_to({ cx + r, cy }, r, large_arc, sweep);
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m_path = move(path);
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return m_path.value();
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}
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// https://www.w3.org/TR/SVG11/shapes.html#CircleElementCXAttribute
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JS::NonnullGCPtr<SVGAnimatedLength> SVGCircleElement::cx() 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_center_x.value_or(0));
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auto anim_length = SVGLength::create(realm(), 0, m_center_x.value_or(0));
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return SVGAnimatedLength::create(realm(), move(base_length), move(anim_length));
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}
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// https://www.w3.org/TR/SVG11/shapes.html#CircleElementCYAttribute
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JS::NonnullGCPtr<SVGAnimatedLength> SVGCircleElement::cy() 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_center_y.value_or(0));
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auto anim_length = SVGLength::create(realm(), 0, m_center_y.value_or(0));
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return SVGAnimatedLength::create(realm(), move(base_length), move(anim_length));
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}
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// https://www.w3.org/TR/SVG11/shapes.html#CircleElementRAttribute
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JS::NonnullGCPtr<SVGAnimatedLength> SVGCircleElement::r() 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_radius.value_or(0));
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auto anim_length = SVGLength::create(realm(), 0, m_radius.value_or(0));
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return SVGAnimatedLength::create(realm(), move(base_length), move(anim_length));
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}
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}
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