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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
* Copyright (c) 2021-2023, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2022-2023, MacDue <macdue@dueutil.tech>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Vector.h>
#include <LibWeb/CSS/Enums.h>
#include <LibWeb/CSS/StyleValues/AbstractImageStyleValue.h>
#include <LibWeb/Painting/GradientPainting.h>
namespace Web::CSS {
class RadialGradientStyleValue final : public AbstractImageStyleValue {
public:
enum class EndingShape {
Circle,
Ellipse
};
enum class Extent {
ClosestCorner,
ClosestSide,
FarthestCorner,
FarthestSide
};
struct CircleSize {
Length radius;
bool operator==(CircleSize const&) const = default;
};
struct EllipseSize {
LengthPercentage radius_a;
LengthPercentage radius_b;
bool operator==(EllipseSize const&) const = default;
};
using Size = Variant<Extent, CircleSize, EllipseSize>;
static ValueComparingNonnullRefPtr<RadialGradientStyleValue> create(EndingShape ending_shape, Size size, PositionValue position, Vector<LinearColorStopListElement> color_stop_list, GradientRepeating repeating)
{
VERIFY(color_stop_list.size() >= 2);
return adopt_ref(*new RadialGradientStyleValue(ending_shape, size, position, move(color_stop_list), repeating));
}
virtual ErrorOr<String> to_string() const override;
void paint(PaintContext&, DevicePixelRect const& dest_rect, CSS::ImageRendering) const override;
virtual bool equals(StyleValue const& other) const override;
Vector<LinearColorStopListElement> const& color_stop_list() const
{
return m_properties.color_stop_list;
}
bool is_paintable() const override { return true; }
void resolve_for_size(Layout::Node const&, CSSPixelSize) const override;
Gfx::FloatSize resolve_size(Layout::Node const&, Gfx::FloatPoint, Gfx::FloatRect const&) const;
bool is_repeating() const { return m_properties.repeating == GradientRepeating::Yes; }
virtual ~RadialGradientStyleValue() override = default;
private:
RadialGradientStyleValue(EndingShape ending_shape, Size size, PositionValue position, Vector<LinearColorStopListElement> color_stop_list, GradientRepeating repeating)
: AbstractImageStyleValue(Type::RadialGradient)
, m_properties { .ending_shape = ending_shape, .size = size, .position = position, .color_stop_list = move(color_stop_list), .repeating = repeating }
{
}
struct Properties {
EndingShape ending_shape;
Size size;
PositionValue position;
Vector<LinearColorStopListElement> color_stop_list;
GradientRepeating repeating;
bool operator==(Properties const&) const = default;
} m_properties;
struct ResolvedData {
Painting::RadialGradientData data;
Gfx::FloatSize gradient_size;
Gfx::FloatPoint center;
};
mutable Optional<ResolvedData> m_resolved;
};
}
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