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/*
* Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/SVG/AttributeNames.h>
#include <LibWeb/SVG/AttributeParser.h>
#include <LibWeb/SVG/SVGCircleElement.h>
namespace Web::SVG {
SVGCircleElement::SVGCircleElement(DOM::Document& document, DOM::QualifiedName qualified_name)
: SVGGeometryElement(document, qualified_name)
{
}
JS::ThrowCompletionOr<void> SVGCircleElement::initialize(JS::Realm& realm)
{
MUST_OR_THROW_OOM(Base::initialize(realm));
set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGCircleElementPrototype>(realm, "SVGCircleElement"));
return {};
}
void SVGCircleElement::parse_attribute(DeprecatedFlyString const& name, DeprecatedString const& value)
{
SVGGeometryElement::parse_attribute(name, value);
if (name == SVG::AttributeNames::cx) {
m_center_x = AttributeParser::parse_coordinate(value);
m_path.clear();
} else if (name == SVG::AttributeNames::cy) {
m_center_y = AttributeParser::parse_coordinate(value);
m_path.clear();
} else if (name == SVG::AttributeNames::r) {
m_radius = AttributeParser::parse_positive_length(value);
m_path.clear();
}
}
Gfx::Path& SVGCircleElement::get_path()
{
if (m_path.has_value())
return m_path.value();
float cx = m_center_x.value_or(0);
float cy = m_center_y.value_or(0);
float r = m_radius.value_or(0);
Gfx::Path path;
// A zero radius disables rendering.
if (r == 0) {
m_path = move(path);
return m_path.value();
}
bool large_arc = false;
bool sweep = true;
// 1. A move-to command to the point cx+r,cy;
path.move_to({ cx + r, cy });
// 2. arc to cx,cy+r;
path.arc_to({ cx, cy + r }, r, large_arc, sweep);
// 3. arc to cx-r,cy;
path.arc_to({ cx - r, cy }, r, large_arc, sweep);
// 4. arc to cx,cy-r;
path.arc_to({ cx, cy - r }, r, large_arc, sweep);
// 5. arc with a segment-completing close path operation.
path.arc_to({ cx + r, cy }, r, large_arc, sweep);
m_path = move(path);
return m_path.value();
}
// https://www.w3.org/TR/SVG11/shapes.html#CircleElementCXAttribute
JS::NonnullGCPtr<SVGAnimatedLength> SVGCircleElement::cx() const
{
// FIXME: Populate the unit type when it is parsed (0 here is "unknown").
// FIXME: Create a proper animated value when animations are supported.
auto base_length = SVGLength::create(realm(), 0, m_center_x.value_or(0));
auto anim_length = SVGLength::create(realm(), 0, m_center_x.value_or(0));
return SVGAnimatedLength::create(realm(), move(base_length), move(anim_length)).release_value_but_fixme_should_propagate_errors();
}
// https://www.w3.org/TR/SVG11/shapes.html#CircleElementCYAttribute
JS::NonnullGCPtr<SVGAnimatedLength> SVGCircleElement::cy() const
{
// FIXME: Populate the unit type when it is parsed (0 here is "unknown").
// FIXME: Create a proper animated value when animations are supported.
auto base_length = SVGLength::create(realm(), 0, m_center_y.value_or(0));
auto anim_length = SVGLength::create(realm(), 0, m_center_y.value_or(0));
return SVGAnimatedLength::create(realm(), move(base_length), move(anim_length)).release_value_but_fixme_should_propagate_errors();
}
// https://www.w3.org/TR/SVG11/shapes.html#CircleElementRAttribute
JS::NonnullGCPtr<SVGAnimatedLength> SVGCircleElement::r() const
{
// FIXME: Populate the unit type when it is parsed (0 here is "unknown").
// FIXME: Create a proper animated value when animations are supported.
auto base_length = SVGLength::create(realm(), 0, m_radius.value_or(0));
auto anim_length = SVGLength::create(realm(), 0, m_radius.value_or(0));
return SVGAnimatedLength::create(realm(), move(base_length), move(anim_length)).release_value_but_fixme_should_propagate_errors();
}
}
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