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serenity/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.h
MacDue 720c27efbd LibWeb: Ensure transform of SVG <use> updates with x and y attributes
Rather than modify the transform of the parent (which could change
independently), this adds a new override element_transform() where
element specific tranfroms can be applied. This will always stay in
sync with the attributes.

A ref test comparing a .svg and .html version of the same file is
added as due to differences in attribute parsing order, the .svg version
was previously drawn incorrectly.

Fixes #20859
2023-08-31 11:10:30 +02:00

78 lines
2.2 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
*/
#pragma once
#include <LibGfx/PaintStyle.h>
#include <LibGfx/Painter.h>
#include <LibGfx/Path.h>
#include <LibWeb/DOM/Node.h>
#include <LibWeb/SVG/AttributeParser.h>
#include <LibWeb/SVG/SVGElement.h>
#include <LibWeb/SVG/SVGGradientElement.h>
#include <LibWeb/SVG/TagNames.h>
#include <LibWeb/SVG/ViewBox.h>
namespace Web::SVG {
class SVGGraphicsElement : public SVGElement {
WEB_PLATFORM_OBJECT(SVGGraphicsElement, SVGElement);
public:
virtual void apply_presentational_hints(CSS::StyleProperties&) const override;
virtual void attribute_changed(DeprecatedFlyString const& name, DeprecatedString const& value) override;
Optional<Gfx::Color> fill_color() const;
Optional<FillRule> fill_rule() const;
Optional<Gfx::Color> stroke_color() const;
Optional<float> stroke_width() const;
Optional<float> fill_opacity() const;
Optional<float> stroke_opacity() const;
float visible_stroke_width() const
{
if (auto color = stroke_color(); color.has_value() && color->alpha() > 0)
return stroke_width().value_or(0);
return 0;
}
Gfx::AffineTransform get_transform() const;
Optional<Gfx::PaintStyle const&> fill_paint_style(SVGPaintContext const&) const;
Optional<Gfx::PaintStyle const&> stroke_paint_style(SVGPaintContext const&) const;
Optional<ViewBox> view_box() const;
protected:
SVGGraphicsElement(DOM::Document&, DOM::QualifiedName);
virtual void initialize(JS::Realm&) override;
virtual Gfx::AffineTransform element_transform() const
{
return m_transform;
}
Optional<Gfx::PaintStyle const&> svg_paint_computed_value_to_gfx_paint_style(SVGPaintContext const& paint_context, Optional<CSS::SVGPaint> const& paint_value) const;
Gfx::AffineTransform m_transform = {};
private:
virtual bool is_svg_graphics_element() const final { return true; }
};
Gfx::AffineTransform transform_from_transform_list(ReadonlySpan<Transform> transform_list);
}
namespace Web::DOM {
template<>
inline bool Node::fast_is<SVG::SVGGraphicsElement>() const { return is_svg_graphics_element(); }
}