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acc8b90549
`EdgeStyleValues` which consist of an offset of a `calc()`s which resolves to 50% should be considered "centered" for `SerializationMode::ResolvedValue` for the purpose of omitting the position value from gradient serialization.
68 lines
2.3 KiB
C++
68 lines
2.3 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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#include "EdgeStyleValue.h"
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#include <LibWeb/CSS/StyleValues/CalculatedStyleValue.h>
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#include <LibWeb/CSS/StyleValues/LengthStyleValue.h>
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#include <LibWeb/CSS/ValueType.h>
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namespace Web::CSS {
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bool EdgeStyleValue::is_center(SerializationMode mode) const
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{
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if (m_properties.edge == PositionEdge::Center)
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return true;
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if (m_properties.offset && m_properties.offset->to_string(mode) == "50%"sv)
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return true;
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return false;
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}
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String EdgeStyleValue::to_string(SerializationMode mode) const
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{
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StringBuilder builder;
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if (m_properties.edge.has_value())
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builder.append(CSS::to_string(m_properties.edge.value()));
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if (m_properties.edge.has_value() && m_properties.offset)
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builder.append(' ');
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if (m_properties.offset)
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builder.append(m_properties.offset->to_string(mode));
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return builder.to_string_without_validation();
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}
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ValueComparingNonnullRefPtr<StyleValue const> EdgeStyleValue::absolutized(ComputationContext const& computation_context) const
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{
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if (m_properties.edge == PositionEdge::Center)
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return EdgeStyleValue::create({}, PercentageStyleValue::create(Percentage(50)));
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CalculationContext calculation_context {
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.percentages_resolve_as = ValueType::Length,
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};
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if (m_properties.edge == PositionEdge::Right || m_properties.edge == PositionEdge::Bottom) {
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if (!m_properties.offset)
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return EdgeStyleValue::create({}, PercentageStyleValue::create(Percentage(100)));
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auto flipped_percentage = SumCalculationNode::create({ NumericCalculationNode::create(Percentage { 100 }, calculation_context),
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NegateCalculationNode::create(CalculationNode::from_style_value(*m_properties.offset, calculation_context)) });
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auto flipped_percentage_style_value = CalculatedStyleValue::create(flipped_percentage, NumericType(NumericType::BaseType::Length, 1), calculation_context);
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return EdgeStyleValue::create({}, flipped_percentage_style_value->absolutized(computation_context));
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}
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if (!m_properties.offset)
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return EdgeStyleValue::create({}, PercentageStyleValue::create(Percentage(0)));
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return EdgeStyleValue::create({}, m_properties.offset->absolutized(computation_context));
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}
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}
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