mirror of
https://github.com/RGBCube/serenity
synced 2025-05-20 17:55:08 +00:00
6482c306f1
This is needed to fix the rendering of the Street View directional controls (which have paths with various levels of opacity set by this attribute).
102 lines
4.7 KiB
C++
102 lines
4.7 KiB
C++
/*
|
|
* Copyright (c) 2020, Matthew Olsson <mattco@serenityos.org>
|
|
* Copyright (c) 2021-2022, Sam Atkins <atkinssj@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibWeb/Bindings/Intrinsics.h>
|
|
#include <LibWeb/CSS/Parser/Parser.h>
|
|
#include <LibWeb/Layout/Node.h>
|
|
#include <LibWeb/SVG/SVGGraphicsElement.h>
|
|
#include <LibWeb/SVG/SVGSVGElement.h>
|
|
|
|
namespace Web::SVG {
|
|
|
|
SVGGraphicsElement::SVGGraphicsElement(DOM::Document& document, DOM::QualifiedName qualified_name)
|
|
: SVGElement(document, move(qualified_name))
|
|
{
|
|
}
|
|
|
|
JS::ThrowCompletionOr<void> SVGGraphicsElement::initialize(JS::Realm& realm)
|
|
{
|
|
MUST_OR_THROW_OOM(Base::initialize(realm));
|
|
set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGGraphicsElementPrototype>(realm, "SVGGraphicsElement"));
|
|
|
|
return {};
|
|
}
|
|
|
|
void SVGGraphicsElement::parse_attribute(DeprecatedFlyString const& name, DeprecatedString const& value)
|
|
{
|
|
SVGElement::parse_attribute(name, value);
|
|
if (name == "fill-opacity"sv) {
|
|
m_fill_opacity = AttributeParser::parse_length(value);
|
|
}
|
|
}
|
|
|
|
void SVGGraphicsElement::apply_presentational_hints(CSS::StyleProperties& style) const
|
|
{
|
|
CSS::Parser::ParsingContext parsing_context { document() };
|
|
for_each_attribute([&](auto& name, auto& value) {
|
|
if (name.equals_ignoring_ascii_case("fill"sv)) {
|
|
// FIXME: The `fill` attribute and CSS `fill` property are not the same! But our support is limited enough that they are equivalent for now.
|
|
if (auto fill_value = parse_css_value(parsing_context, value, CSS::PropertyID::Fill))
|
|
style.set_property(CSS::PropertyID::Fill, fill_value.release_nonnull());
|
|
} else if (name.equals_ignoring_ascii_case("stroke"sv)) {
|
|
// FIXME: The `stroke` attribute and CSS `stroke` property are not the same! But our support is limited enough that they are equivalent for now.
|
|
if (auto stroke_value = parse_css_value(parsing_context, value, CSS::PropertyID::Stroke))
|
|
style.set_property(CSS::PropertyID::Stroke, stroke_value.release_nonnull());
|
|
} else if (name.equals_ignoring_ascii_case("stroke-width"sv)) {
|
|
if (auto stroke_width_value = parse_css_value(parsing_context, value, CSS::PropertyID::StrokeWidth))
|
|
style.set_property(CSS::PropertyID::StrokeWidth, stroke_width_value.release_nonnull());
|
|
} else if (name.equals_ignoring_ascii_case("transform"sv)) {
|
|
if (auto transform = parse_css_value(parsing_context, value, CSS::PropertyID::Transform))
|
|
style.set_property(CSS::PropertyID::Transform, transform.release_nonnull());
|
|
}
|
|
});
|
|
}
|
|
|
|
Optional<Gfx::Color> SVGGraphicsElement::fill_color() const
|
|
{
|
|
if (!layout_node())
|
|
return {};
|
|
// FIXME: In the working-draft spec, `fill` is intended to be a shorthand, with `fill-color`
|
|
// being what we actually want to use. But that's not final or widely supported yet.
|
|
return layout_node()->computed_values().fill().map([&](Gfx::Color color) {
|
|
return color.with_alpha(m_fill_opacity.value_or(1) * 255);
|
|
});
|
|
}
|
|
|
|
Optional<Gfx::Color> SVGGraphicsElement::stroke_color() const
|
|
{
|
|
if (!layout_node())
|
|
return {};
|
|
// FIXME: In the working-draft spec, `stroke` is intended to be a shorthand, with `stroke-color`
|
|
// being what we actually want to use. But that's not final or widely supported yet.
|
|
return layout_node()->computed_values().stroke();
|
|
}
|
|
|
|
Optional<float> SVGGraphicsElement::stroke_width() const
|
|
{
|
|
if (!layout_node())
|
|
return {};
|
|
// FIXME: Converting to pixels isn't really correct - values should be in "user units"
|
|
// https://svgwg.org/svg2-draft/coords.html#TermUserUnits
|
|
if (auto width = layout_node()->computed_values().stroke_width(); width.has_value()) {
|
|
// Resolved relative to the "Scaled viewport size": https://www.w3.org/TR/2017/WD-fill-stroke-3-20170413/#scaled-viewport-size
|
|
// FIXME: This isn't right, but it's something.
|
|
CSSPixels viewport_width = 0;
|
|
CSSPixels viewport_height = 0;
|
|
if (auto* svg_svg_element = first_ancestor_of_type<SVGSVGElement>()) {
|
|
if (auto* svg_svg_layout_node = svg_svg_element->layout_node()) {
|
|
viewport_width = svg_svg_layout_node->computed_values().width().resolved(*svg_svg_layout_node, CSS::Length::make_px(0)).to_px(*svg_svg_layout_node);
|
|
viewport_height = svg_svg_layout_node->computed_values().height().resolved(*svg_svg_layout_node, CSS::Length::make_px(0)).to_px(*svg_svg_layout_node);
|
|
}
|
|
}
|
|
auto scaled_viewport_size = CSS::Length::make_px((viewport_width + viewport_height) * 0.5f);
|
|
return width->resolved(*layout_node(), scaled_viewport_size).to_px(*layout_node()).value();
|
|
}
|
|
return {};
|
|
}
|
|
|
|
}
|