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c57975c9fd
This reverts 0e3487b9ab.
Back when I made that change, I thought we could make our StyleValue
classes match the typed-om definitions directly. However, they have
different requirements. Typed-om types need to be mutable and GCed,
whereas StyleValues are immutable and ideally wouldn't require a JS VM.
While I was already making such a cataclysmic change, I've moved it into
the StyleValues directory, because it *not* being there has bothered me
for a long time. 😅
63 lines
2.3 KiB
C++
63 lines
2.3 KiB
C++
/*
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* Copyright (c) 2024, Sam Atkins <sam@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include "CSSHSL.h"
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#include <AK/TypeCasts.h>
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#include <LibWeb/CSS/Serialize.h>
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#include <LibWeb/CSS/StyleValues/CalculatedStyleValue.h>
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#include <LibWeb/CSS/StyleValues/PercentageStyleValue.h>
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namespace Web::CSS {
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Optional<Color> CSSHSL::to_color(ColorResolutionContext color_resolution_context) const
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{
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auto h_val = resolve_hue(m_properties.h, color_resolution_context.calculation_resolution_context);
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auto s_val = resolve_with_reference_value(m_properties.s, 100.0, color_resolution_context.calculation_resolution_context);
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auto l_val = resolve_with_reference_value(m_properties.l, 100.0, color_resolution_context.calculation_resolution_context);
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auto alpha_val = resolve_alpha(m_properties.alpha, color_resolution_context.calculation_resolution_context);
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if (!h_val.has_value() || !s_val.has_value() || !l_val.has_value() || !alpha_val.has_value())
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return {};
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return Color::from_hsla(h_val.value(), s_val.value() / 100.0f, l_val.value() / 100.0f, alpha_val.value());
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}
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bool CSSHSL::equals(StyleValue 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 const& other_color = other.as_color();
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if (color_type() != other_color.color_type())
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return false;
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auto const& other_hsl = as<CSSHSL>(other_color);
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return m_properties == other_hsl.m_properties;
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}
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// https://www.w3.org/TR/css-color-4/#serializing-sRGB-values
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String CSSHSL::to_string(SerializationMode mode) const
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{
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if (auto color = to_color({}); color.has_value())
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return serialize_a_srgb_value(color.value());
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StringBuilder builder;
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builder.append("hsl("sv);
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serialize_hue_component(builder, mode, m_properties.h);
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builder.append(" "sv);
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serialize_color_component(builder, mode, m_properties.s, 100, 0);
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builder.append(" "sv);
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serialize_color_component(builder, mode, m_properties.l, 100, 0);
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if ((!m_properties.alpha->is_number() || m_properties.alpha->as_number().number() < 1) && (!m_properties.alpha->is_percentage() || m_properties.alpha->as_percentage().percentage().as_fraction() < 1)) {
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builder.append(" / "sv);
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serialize_alpha_component(builder, mode, m_properties.alpha);
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}
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builder.append(")"sv);
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return builder.to_string_without_validation();
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}
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}
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