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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.
73 lines
2.6 KiB
C++
73 lines
2.6 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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#include "ConicGradientStyleValue.h"
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#include <LibWeb/CSS/StyleValues/PositionStyleValue.h>
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#include <LibWeb/Layout/Node.h>
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#include <LibWeb/Painting/DisplayListRecorder.h>
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namespace Web::CSS {
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String ConicGradientStyleValue::to_string(SerializationMode mode) const
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{
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StringBuilder builder;
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if (is_repeating())
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builder.append("repeating-"sv);
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builder.append("conic-gradient("sv);
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bool has_from_angle = m_properties.from_angle.to_degrees() != 0;
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bool has_at_position = !m_properties.position->is_center();
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if (has_from_angle)
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builder.appendff("from {}", m_properties.from_angle.to_string());
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if (has_at_position) {
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if (has_from_angle)
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builder.append(' ');
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builder.appendff("at {}"sv, m_properties.position->to_string(mode));
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}
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if (has_from_angle || has_at_position)
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builder.append(", "sv);
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serialize_color_stop_list(builder, m_properties.color_stop_list, mode);
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builder.append(')');
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return MUST(builder.to_string());
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}
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void ConicGradientStyleValue::resolve_for_size(Layout::NodeWithStyleAndBoxModelMetrics const& node, CSSPixelSize size) const
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{
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ResolvedDataCacheKey cache_key {
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.length_resolution_context = Length::ResolutionContext::for_layout_node(node),
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.size = size,
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};
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if (m_resolved_data_cache_key != cache_key) {
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m_resolved_data_cache_key = move(cache_key);
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m_resolved = ResolvedData { Painting::resolve_conic_gradient_data(node, *this), {} };
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}
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m_resolved->position = m_properties.position->resolved(node, CSSPixelRect { { 0, 0 }, size });
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}
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void ConicGradientStyleValue::paint(PaintContext& context, DevicePixelRect const& dest_rect, CSS::ImageRendering) const
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{
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VERIFY(m_resolved.has_value());
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auto destination_rect = dest_rect.to_type<int>();
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auto position = context.rounded_device_point(m_resolved->position).to_type<int>();
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context.display_list_recorder().fill_rect_with_conic_gradient(destination_rect, m_resolved->data, position);
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}
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bool ConicGradientStyleValue::equals(CSSStyleValue const& other) const
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{
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if (type() != other.type())
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return false;
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auto& other_gradient = other.as_conic_gradient();
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return m_properties == other_gradient.m_properties;
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}
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float ConicGradientStyleValue::angle_degrees() const
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{
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return m_properties.from_angle.to_degrees();
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}
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}
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