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85 lines
2.4 KiB
C++
85 lines
2.4 KiB
C++
/*
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* Copyright (c) 2023, MacDue <macdue@dueutil.tech>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/IterationDecision.h>
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#include <LibGfx/PaintStyle.h>
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#include <LibWeb/SVG/AttributeParser.h>
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#include <LibWeb/SVG/SVGElement.h>
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#include <LibWeb/SVG/SVGStopElement.h>
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namespace Web::SVG {
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struct SVGPaintContext {
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Gfx::FloatRect viewport;
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Gfx::FloatRect path_bounding_box;
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Gfx::AffineTransform transform;
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};
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inline Gfx::SVGGradientPaintStyle::SpreadMethod to_gfx_spread_method(SpreadMethod spread_method)
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{
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switch (spread_method) {
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case SpreadMethod::Pad:
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return Gfx::SVGGradientPaintStyle::SpreadMethod::Pad;
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case SpreadMethod::Reflect:
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return Gfx::SVGGradientPaintStyle::SpreadMethod::Reflect;
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case SpreadMethod::Repeat:
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return Gfx::SVGGradientPaintStyle::SpreadMethod::Repeat;
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default:
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VERIFY_NOT_REACHED();
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}
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}
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class SVGGradientElement : public SVGElement {
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WEB_PLATFORM_OBJECT(SVGGradientElement, SVGElement);
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public:
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virtual ~SVGGradientElement() override = default;
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virtual void attribute_changed(FlyString const& name, DeprecatedString const& value) override;
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virtual Optional<Gfx::PaintStyle const&> to_gfx_paint_style(SVGPaintContext const&) const = 0;
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GradientUnits gradient_units() const;
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SpreadMethod spread_method() const;
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Optional<Gfx::AffineTransform> gradient_transform() const;
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protected:
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SVGGradientElement(DOM::Document&, DOM::QualifiedName);
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virtual void initialize(JS::Realm&) override;
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JS::GCPtr<SVGGradientElement const> linked_gradient() const;
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Gfx::AffineTransform gradient_paint_transform(SVGPaintContext const&) const;
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template<VoidFunction<SVGStopElement> Callback>
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void for_each_color_stop(Callback const& callback) const
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{
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bool color_stops_found = false;
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for_each_child_of_type<SVG::SVGStopElement>([&](auto& stop) {
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color_stops_found = true;
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callback(stop);
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});
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if (!color_stops_found) {
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if (auto gradient = linked_gradient())
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gradient->for_each_color_stop(callback);
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}
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}
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void add_color_stops(Gfx::SVGGradientPaintStyle&) const;
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private:
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Optional<GradientUnits> m_gradient_units = {};
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Optional<SpreadMethod> m_spread_method = {};
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Optional<Gfx::AffineTransform> m_gradient_transform = {};
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};
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}
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