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6a4a60cbd5
We previously only invalidated the cached color-stop data when the painted area's size changed. However, multiple elements can use the same gradient and be the same size, but have different parameters that affect the gradient stop positions, for example if a stop has an em position. This can also change for the same element over time. The new cache instead uses these parameters as the cache key. So we recompute the cache if lengths would resolve differently, or the area's size is different. The included test fails without this change.
104 lines
3.5 KiB
C++
104 lines
3.5 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2021, Tobias Christiansen <tobyase@serenityos.org>
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* Copyright (c) 2021-2025, Sam Atkins <sam@ladybird.org>
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* Copyright (c) 2022-2023, 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/Vector.h>
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#include <LibWeb/CSS/Enums.h>
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#include <LibWeb/CSS/StyleValues/AbstractImageStyleValue.h>
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#include <LibWeb/Painting/GradientPainting.h>
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namespace Web::CSS {
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class RadialGradientStyleValue final : public AbstractImageStyleValue {
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public:
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enum class EndingShape {
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Circle,
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Ellipse
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};
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enum class Extent {
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ClosestCorner,
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ClosestSide,
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FarthestCorner,
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FarthestSide
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};
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struct CircleSize {
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Length radius;
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bool operator==(CircleSize const&) const = default;
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};
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struct EllipseSize {
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LengthPercentage radius_a;
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LengthPercentage radius_b;
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bool operator==(EllipseSize const&) const = default;
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};
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using Size = Variant<Extent, CircleSize, EllipseSize>;
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static ValueComparingNonnullRefPtr<RadialGradientStyleValue> create(EndingShape ending_shape, Size size, ValueComparingNonnullRefPtr<PositionStyleValue> position, Vector<LinearColorStopListElement> color_stop_list, GradientRepeating repeating)
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{
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VERIFY(!color_stop_list.is_empty());
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return adopt_ref(*new (nothrow) RadialGradientStyleValue(ending_shape, size, move(position), move(color_stop_list), repeating));
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}
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virtual String to_string(SerializationMode) const override;
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void paint(PaintContext&, DevicePixelRect const& dest_rect, CSS::ImageRendering) const override;
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virtual bool equals(CSSStyleValue const& other) const override;
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Vector<LinearColorStopListElement> const& color_stop_list() const
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{
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return m_properties.color_stop_list;
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}
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bool is_paintable() const override { return true; }
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void resolve_for_size(Layout::NodeWithStyleAndBoxModelMetrics const&, CSSPixelSize) const override;
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CSSPixelSize resolve_size(Layout::Node const&, CSSPixelPoint, CSSPixelRect const&) const;
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bool is_repeating() const { return m_properties.repeating == GradientRepeating::Yes; }
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virtual ~RadialGradientStyleValue() override = default;
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private:
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RadialGradientStyleValue(EndingShape ending_shape, Size size, ValueComparingNonnullRefPtr<PositionStyleValue> position, Vector<LinearColorStopListElement> color_stop_list, GradientRepeating repeating)
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: AbstractImageStyleValue(Type::RadialGradient)
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, m_properties { .ending_shape = ending_shape, .size = size, .position = move(position), .color_stop_list = move(color_stop_list), .repeating = repeating }
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{
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}
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struct Properties {
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EndingShape ending_shape;
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Size size;
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ValueComparingNonnullRefPtr<PositionStyleValue> position;
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Vector<LinearColorStopListElement> color_stop_list;
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GradientRepeating repeating;
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bool operator==(Properties const&) const = default;
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} m_properties;
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struct ResolvedDataCacheKey {
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Length::ResolutionContext length_resolution_context;
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CSSPixelSize size;
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bool operator==(ResolvedDataCacheKey const&) const = default;
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};
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mutable Optional<ResolvedDataCacheKey> m_resolved_data_cache_key;
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struct ResolvedData {
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Painting::RadialGradientData data;
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CSSPixelSize gradient_size;
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CSSPixelPoint center;
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};
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mutable Optional<ResolvedData> m_resolved;
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};
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}
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