mirror of
https://github.com/RGBCube/serenity
synced 2025-05-16 15:44:57 +00:00
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.
224 lines
9 KiB
C++
224 lines
9 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/SVGAnimatedLength.h>
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#include <LibWeb/SVG/SVGLength.h>
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#include <LibWeb/SVG/SVGRectElement.h>
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namespace Web::SVG {
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SVGRectElement::SVGRectElement(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> SVGRectElement::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::SVGRectElementPrototype>(realm, "SVGRectElement"));
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return {};
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}
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void SVGRectElement::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::x) {
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m_x = AttributeParser::parse_coordinate(value);
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m_path.clear();
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} else if (name == SVG::AttributeNames::y) {
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m_y = AttributeParser::parse_coordinate(value);
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m_path.clear();
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} else if (name == SVG::AttributeNames::width) {
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m_width = AttributeParser::parse_positive_length(value);
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m_path.clear();
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} else if (name == SVG::AttributeNames::height) {
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m_height = AttributeParser::parse_positive_length(value);
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m_path.clear();
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} else if (name == SVG::AttributeNames::rx) {
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m_radius_x = AttributeParser::parse_length(value);
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m_path.clear();
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} else if (name == SVG::AttributeNames::ry) {
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m_radius_y = AttributeParser::parse_length(value);
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m_path.clear();
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}
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}
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Gfx::Path& SVGRectElement::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 width = m_width.value_or(0);
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float height = m_height.value_or(0);
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float x = m_x.value_or(0);
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float y = m_y.value_or(0);
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Gfx::Path path;
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// If width or height is zero, rendering is disabled.
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if (width == 0 && height == 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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auto corner_radii = calculate_used_corner_radius_values();
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float rx = corner_radii.x();
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float ry = corner_radii.y();
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// 1. perform an absolute moveto operation to location (x+rx,y);
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path.move_to({ x + rx, y });
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// 2, perform an absolute horizontal lineto with parameter x+width-rx;
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path.horizontal_line_to(x + width - rx);
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// 3. if both rx and ry are greater than zero,
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// perform an absolute elliptical arc operation to coordinate (x+width,y+ry),
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// where rx and ry are used as the equivalent parameters to the elliptical arc command,
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// the x-axis-rotation and large-arc-flag are set to zero,
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// the sweep-flag is set to one;
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double x_axis_rotation = 0;
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bool large_arc_flag = false;
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bool sweep_flag = true;
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if (rx > 0 && ry > 0)
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path.elliptical_arc_to({ x + width, y + ry }, corner_radii, x_axis_rotation, large_arc_flag, sweep_flag);
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// 4. perform an absolute vertical lineto parameter y+height-ry;
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path.vertical_line_to(y + height - ry);
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// 5. if both rx and ry are greater than zero,
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// perform an absolute elliptical arc operation to coordinate (x+width-rx,y+height),
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// using the same parameters as previously;
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if (rx > 0 && ry > 0)
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path.elliptical_arc_to({ x + width - rx, y + height }, corner_radii, x_axis_rotation, large_arc_flag, sweep_flag);
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// 6. perform an absolute horizontal lineto parameter x+rx;
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path.horizontal_line_to(x + rx);
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// 7. if both rx and ry are greater than zero,
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// perform an absolute elliptical arc operation to coordinate (x,y+height-ry),
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// using the same parameters as previously;
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if (rx > 0 && ry > 0)
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path.elliptical_arc_to({ x, y + height - ry }, corner_radii, x_axis_rotation, large_arc_flag, sweep_flag);
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// 8. perform an absolute vertical lineto parameter y+ry
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path.vertical_line_to(y + ry);
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// 9. if both rx and ry are greater than zero,
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// perform an absolute elliptical arc operation with a segment-completing close path operation,
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// using the same parameters as previously.
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if (rx > 0 && ry > 0)
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path.elliptical_arc_to({ x + rx, y }, corner_radii, x_axis_rotation, large_arc_flag, sweep_flag);
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m_path = move(path);
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return m_path.value();
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}
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Gfx::FloatPoint SVGRectElement::calculate_used_corner_radius_values()
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{
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// 1. Let rx and ry be length values.
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float rx = 0;
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float ry = 0;
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// 2. If neither ‘rx’ nor ‘ry’ are properly specified, then set both rx and ry to 0. (This will result in square corners.)
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if (!m_radius_x.has_value() && !m_radius_y.has_value()) {
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rx = 0;
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ry = 0;
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}
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// 3. Otherwise, if a properly specified value is provided for ‘rx’, but not for ‘ry’, then set both rx and ry to the value of ‘rx’.
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else if (m_radius_x.has_value()) {
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rx = m_radius_x.value();
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ry = m_radius_x.value();
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}
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// 4. Otherwise, if a properly specified value is provided for ‘ry’, but not for ‘rx’, then set both rx and ry to the value of ‘ry’.
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else if (m_radius_y.has_value()) {
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rx = m_radius_y.value();
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ry = m_radius_y.value();
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}
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// 5. Otherwise, both ‘rx’ and ‘ry’ were specified properly. Set rx to the value of ‘rx’ and ry to the value of ‘ry’.
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else {
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rx = m_radius_x.value();
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ry = m_radius_y.value();
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}
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// 6. If rx is greater than half of ‘width’, then set rx to half of ‘width’.
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auto half_width = m_width.value_or(0) / 2;
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if (rx > half_width)
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rx = half_width;
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// 7. If ry is greater than half of ‘height’, then set ry to half of ‘height’.
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auto half_height = m_height.value_or(0) / 2;
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if (ry > half_height)
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ry = half_height;
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// 8. The effective values of ‘rx’ and ‘ry’ are rx and ry, respectively.
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return Gfx::FloatPoint { rx, ry };
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}
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// https://www.w3.org/TR/SVG11/shapes.html#RectElementXAttribute
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JS::NonnullGCPtr<SVGAnimatedLength> SVGRectElement::x() 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_x.value_or(0));
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auto anim_length = SVGLength::create(realm(), 0, m_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#RectElementYAttribute
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JS::NonnullGCPtr<SVGAnimatedLength> SVGRectElement::y() 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_y.value_or(0));
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auto anim_length = SVGLength::create(realm(), 0, m_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#RectElementWidthAttribute
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JS::NonnullGCPtr<SVGAnimatedLength> SVGRectElement::width() 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_width.value_or(0));
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auto anim_length = SVGLength::create(realm(), 0, m_width.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#RectElementHeightAttribute
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JS::NonnullGCPtr<SVGAnimatedLength> SVGRectElement::height() 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_height.value_or(0));
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auto anim_length = SVGLength::create(realm(), 0, m_height.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#RectElementRXAttribute
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JS::NonnullGCPtr<SVGAnimatedLength> SVGRectElement::rx() 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_x.value_or(0));
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auto anim_length = SVGLength::create(realm(), 0, m_radius_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#RectElementRYAttribute
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JS::NonnullGCPtr<SVGAnimatedLength> SVGRectElement::ry() 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_y.value_or(0));
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auto anim_length = SVGLength::create(realm(), 0, m_radius_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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}
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