mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-09-20 17:58:18 +03:00
aeee98b3a1
This commit removes DeprecatedString's "null" state, and replaces all its users with one of the following: - A normal, empty DeprecatedString - Optional<DeprecatedString> Note that null states of DeprecatedFlyString/StringView/etc are *not* affected by this commit. However, DeprecatedString::empty() is now considered equal to a null StringView.
223 lines
9.1 KiB
C++
223 lines
9.1 KiB
C++
/*
|
||
* 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/SVGAnimatedLength.h>
|
||
#include <LibWeb/SVG/SVGLength.h>
|
||
#include <LibWeb/SVG/SVGRectElement.h>
|
||
|
||
namespace Web::SVG {
|
||
|
||
SVGRectElement::SVGRectElement(DOM::Document& document, DOM::QualifiedName qualified_name)
|
||
: SVGGeometryElement(document, qualified_name)
|
||
{
|
||
}
|
||
|
||
void SVGRectElement::initialize(JS::Realm& realm)
|
||
{
|
||
Base::initialize(realm);
|
||
set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGRectElementPrototype>(realm, "SVGRectElement"));
|
||
}
|
||
|
||
void SVGRectElement::attribute_changed(FlyString const& name, Optional<DeprecatedString> const& value)
|
||
{
|
||
SVGGeometryElement::attribute_changed(name, value);
|
||
|
||
if (name == SVG::AttributeNames::x) {
|
||
m_x = AttributeParser::parse_coordinate(value.value_or(""));
|
||
m_path.clear();
|
||
} else if (name == SVG::AttributeNames::y) {
|
||
m_y = AttributeParser::parse_coordinate(value.value_or(""));
|
||
m_path.clear();
|
||
} else if (name == SVG::AttributeNames::width) {
|
||
m_width = AttributeParser::parse_positive_length(value.value_or(""));
|
||
m_path.clear();
|
||
} else if (name == SVG::AttributeNames::height) {
|
||
m_height = AttributeParser::parse_positive_length(value.value_or(""));
|
||
m_path.clear();
|
||
} else if (name == SVG::AttributeNames::rx) {
|
||
m_radius_x = AttributeParser::parse_length(value.value_or(""));
|
||
m_path.clear();
|
||
} else if (name == SVG::AttributeNames::ry) {
|
||
m_radius_y = AttributeParser::parse_length(value.value_or(""));
|
||
m_path.clear();
|
||
}
|
||
}
|
||
|
||
Gfx::Path& SVGRectElement::get_path()
|
||
{
|
||
if (m_path.has_value())
|
||
return m_path.value();
|
||
|
||
float width = m_width.value_or(0);
|
||
float height = m_height.value_or(0);
|
||
float x = m_x.value_or(0);
|
||
float y = m_y.value_or(0);
|
||
|
||
Gfx::Path path;
|
||
// If width or height is zero, rendering is disabled.
|
||
if (width == 0 && height == 0) {
|
||
m_path = move(path);
|
||
return m_path.value();
|
||
}
|
||
|
||
auto corner_radii = calculate_used_corner_radius_values();
|
||
float rx = corner_radii.width();
|
||
float ry = corner_radii.height();
|
||
|
||
// 1. perform an absolute moveto operation to location (x+rx,y);
|
||
path.move_to({ x + rx, y });
|
||
|
||
// 2, perform an absolute horizontal lineto with parameter x+width-rx;
|
||
path.horizontal_line_to(x + width - rx);
|
||
|
||
// 3. if both rx and ry are greater than zero,
|
||
// perform an absolute elliptical arc operation to coordinate (x+width,y+ry),
|
||
// where rx and ry are used as the equivalent parameters to the elliptical arc command,
|
||
// the x-axis-rotation and large-arc-flag are set to zero,
|
||
// the sweep-flag is set to one;
|
||
double x_axis_rotation = 0;
|
||
bool large_arc_flag = false;
|
||
bool sweep_flag = true;
|
||
if (rx > 0 && ry > 0)
|
||
path.elliptical_arc_to({ x + width, y + ry }, corner_radii, x_axis_rotation, large_arc_flag, sweep_flag);
|
||
|
||
// 4. perform an absolute vertical lineto parameter y+height-ry;
|
||
path.vertical_line_to(y + height - ry);
|
||
|
||
// 5. if both rx and ry are greater than zero,
|
||
// perform an absolute elliptical arc operation to coordinate (x+width-rx,y+height),
|
||
// using the same parameters as previously;
|
||
if (rx > 0 && ry > 0)
|
||
path.elliptical_arc_to({ x + width - rx, y + height }, corner_radii, x_axis_rotation, large_arc_flag, sweep_flag);
|
||
|
||
// 6. perform an absolute horizontal lineto parameter x+rx;
|
||
path.horizontal_line_to(x + rx);
|
||
|
||
// 7. if both rx and ry are greater than zero,
|
||
// perform an absolute elliptical arc operation to coordinate (x,y+height-ry),
|
||
// using the same parameters as previously;
|
||
if (rx > 0 && ry > 0)
|
||
path.elliptical_arc_to({ x, y + height - ry }, corner_radii, x_axis_rotation, large_arc_flag, sweep_flag);
|
||
|
||
// 8. perform an absolute vertical lineto parameter y+ry
|
||
path.vertical_line_to(y + ry);
|
||
|
||
// 9. if both rx and ry are greater than zero,
|
||
// perform an absolute elliptical arc operation with a segment-completing close path operation,
|
||
// using the same parameters as previously.
|
||
if (rx > 0 && ry > 0)
|
||
path.elliptical_arc_to({ x + rx, y }, corner_radii, x_axis_rotation, large_arc_flag, sweep_flag);
|
||
|
||
m_path = move(path);
|
||
return m_path.value();
|
||
}
|
||
|
||
Gfx::FloatSize SVGRectElement::calculate_used_corner_radius_values() const
|
||
{
|
||
// 1. Let rx and ry be length values.
|
||
float rx = 0;
|
||
float ry = 0;
|
||
|
||
// 2. If neither ‘rx’ nor ‘ry’ are properly specified, then set both rx and ry to 0. (This will result in square corners.)
|
||
if (!m_radius_x.has_value() && !m_radius_y.has_value()) {
|
||
rx = 0;
|
||
ry = 0;
|
||
}
|
||
// 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’.
|
||
else if (m_radius_x.has_value() && !m_radius_y.has_value()) {
|
||
rx = m_radius_x.value();
|
||
ry = m_radius_x.value();
|
||
}
|
||
// 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’.
|
||
else if (m_radius_y.has_value() && !m_radius_x.has_value()) {
|
||
rx = m_radius_y.value();
|
||
ry = m_radius_y.value();
|
||
}
|
||
// 5. Otherwise, both ‘rx’ and ‘ry’ were specified properly. Set rx to the value of ‘rx’ and ry to the value of ‘ry’.
|
||
else {
|
||
rx = m_radius_x.value();
|
||
ry = m_radius_y.value();
|
||
}
|
||
|
||
// 6. If rx is greater than half of ‘width’, then set rx to half of ‘width’.
|
||
auto half_width = m_width.value_or(0) / 2;
|
||
if (rx > half_width)
|
||
rx = half_width;
|
||
|
||
// 7. If ry is greater than half of ‘height’, then set ry to half of ‘height’.
|
||
auto half_height = m_height.value_or(0) / 2;
|
||
if (ry > half_height)
|
||
ry = half_height;
|
||
|
||
// 8. The effective values of ‘rx’ and ‘ry’ are rx and ry, respectively.
|
||
return { rx, ry };
|
||
}
|
||
|
||
// https://www.w3.org/TR/SVG11/shapes.html#RectElementXAttribute
|
||
JS::NonnullGCPtr<SVGAnimatedLength> SVGRectElement::x() 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_x.value_or(0));
|
||
auto anim_length = SVGLength::create(realm(), 0, m_x.value_or(0));
|
||
return SVGAnimatedLength::create(realm(), move(base_length), move(anim_length));
|
||
}
|
||
|
||
// https://www.w3.org/TR/SVG11/shapes.html#RectElementYAttribute
|
||
JS::NonnullGCPtr<SVGAnimatedLength> SVGRectElement::y() 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_y.value_or(0));
|
||
auto anim_length = SVGLength::create(realm(), 0, m_y.value_or(0));
|
||
return SVGAnimatedLength::create(realm(), move(base_length), move(anim_length));
|
||
}
|
||
|
||
// https://www.w3.org/TR/SVG11/shapes.html#RectElementWidthAttribute
|
||
JS::NonnullGCPtr<SVGAnimatedLength> SVGRectElement::width() 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_width.value_or(0));
|
||
auto anim_length = SVGLength::create(realm(), 0, m_width.value_or(0));
|
||
return SVGAnimatedLength::create(realm(), move(base_length), move(anim_length));
|
||
}
|
||
|
||
// https://www.w3.org/TR/SVG11/shapes.html#RectElementHeightAttribute
|
||
JS::NonnullGCPtr<SVGAnimatedLength> SVGRectElement::height() 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_height.value_or(0));
|
||
auto anim_length = SVGLength::create(realm(), 0, m_height.value_or(0));
|
||
return SVGAnimatedLength::create(realm(), move(base_length), move(anim_length));
|
||
}
|
||
|
||
// https://www.w3.org/TR/SVG11/shapes.html#RectElementRXAttribute
|
||
JS::NonnullGCPtr<SVGAnimatedLength> SVGRectElement::rx() 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_x.value_or(0));
|
||
auto anim_length = SVGLength::create(realm(), 0, m_radius_x.value_or(0));
|
||
return SVGAnimatedLength::create(realm(), move(base_length), move(anim_length));
|
||
}
|
||
|
||
// https://www.w3.org/TR/SVG11/shapes.html#RectElementRYAttribute
|
||
JS::NonnullGCPtr<SVGAnimatedLength> SVGRectElement::ry() 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_y.value_or(0));
|
||
auto anim_length = SVGLength::create(realm(), 0, m_radius_y.value_or(0));
|
||
return SVGAnimatedLength::create(realm(), move(base_length), move(anim_length));
|
||
}
|
||
|
||
}
|