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e85c3c97fb
This will be used to differentiate between serialization for resolved style (i.e window.getComputedStyle()) and serialization for all other purposes.
51 lines
1.6 KiB
C++
51 lines
1.6 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 "CSSHWB.h"
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#include <AK/TypeCasts.h>
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#include <LibWeb/CSS/Serialize.h>
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namespace Web::CSS {
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Color CSSHWB::to_color(Optional<Layout::NodeWithStyle const&>) const
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{
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auto const h_val = resolve_hue(m_properties.h).value_or(0);
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auto const w_val = clamp(resolve_with_reference_value(m_properties.w, 100.0).value_or(0), 0, 100) / 100.0f;
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auto const b_val = clamp(resolve_with_reference_value(m_properties.b, 100.0).value_or(0), 0, 100) / 100.0f;
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auto const alpha_val = resolve_alpha(m_properties.alpha).value_or(1);
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if (w_val + b_val >= 1.0f) {
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auto to_byte = [](float value) {
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return round_to<u8>(clamp(value * 255.0f, 0.0f, 255.0f));
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};
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u8 gray = to_byte(w_val / (w_val + b_val));
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return Color(gray, gray, gray, to_byte(alpha_val));
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}
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auto value = 1 - b_val;
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auto saturation = 1 - (w_val / value);
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return Color::from_hsv(h_val, saturation, value).with_opacity(alpha_val);
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}
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bool CSSHWB::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 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_hwb = verify_cast<CSSHWB>(other_color);
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return m_properties == other_hwb.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 CSSHWB::to_string(SerializationMode) const
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{
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// FIXME: Do this properly, taking unresolved calculated values into account.
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return serialize_a_srgb_value(to_color({}));
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}
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}
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