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8a7332b7b9
This allows us to avoid the ugly hack in `property_accepted_type_ranges()`. This also updates the `ValueType` to be `opacity-value` rather than `opacity` to match the spec.
44 lines
1.7 KiB
C++
44 lines
1.7 KiB
C++
/*
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* Copyright (c) 2026, Callum Law <callumlaw1709@outlook.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "OpacityValueStyleValue.h"
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#include <LibWeb/CSS/StyleValues/PercentageStyleValue.h>
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namespace Web::CSS {
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// https://drafts.csswg.org/css-color-4/#serializing-opacity-values
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void OpacityValueStyleValue::serialize(StringBuilder& builder, SerializationMode mode) const
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{
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// If the specified value for an opacity value matches a literal <percentage-token> (i.e. does not use calc()) it
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// should be serialized as the equivalent <number> (0% maps to 0, 100% maps to 1) value. value.
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// NB: We resolve percentages to numbers at computed value time so this will only ever the the specified value.
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if (m_value->is_percentage()) {
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serialize_a_number(builder, m_value->as_percentage().percentage().as_fraction());
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return;
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}
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// Otherwise, the specified value for an opacity value should serialize using the standard serialization for the grammar.
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m_value->serialize(builder, mode);
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}
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ValueComparingNonnullRefPtr<StyleValue const> OpacityValueStyleValue::absolutized(ComputationContext const& computation_context) const
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{
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if (m_value->is_number() && m_value->as_number().number() > 0 && m_value->as_number().number() < 1)
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return *this;
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auto clamped_number_value = clamp(number_from_style_value(m_value->absolutized(computation_context), 1), 0, 1);
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return OpacityValueStyleValue::create(NumberStyleValue::create(clamped_number_value));
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}
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GC::Ref<CSSStyleValue> OpacityValueStyleValue::reify(JS::Realm& realm, FlyString const& associated_property) const
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{
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return m_value->reify(realm, associated_property);
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}
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}
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