mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-11-03 23:00:58 +00:00
51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
/*
|
|
* Copyright (c) 2024, Sam Atkins <sam@ladybird.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include "CSSHWB.h"
|
|
#include <AK/TypeCasts.h>
|
|
#include <LibWeb/CSS/Serialize.h>
|
|
|
|
namespace Web::CSS {
|
|
|
|
Color CSSHWB::to_color(Optional<Layout::NodeWithStyle const&>) const
|
|
{
|
|
auto const h_val = resolve_hue(m_properties.h).value_or(0);
|
|
auto const w_val = clamp(resolve_with_reference_value(m_properties.w, 100.0).value_or(0), 0, 100) / 100.0f;
|
|
auto const b_val = clamp(resolve_with_reference_value(m_properties.b, 100.0).value_or(0), 0, 100) / 100.0f;
|
|
auto const alpha_val = resolve_alpha(m_properties.alpha).value_or(1);
|
|
|
|
if (w_val + b_val >= 1.0f) {
|
|
auto to_byte = [](float value) {
|
|
return round_to<u8>(clamp(value * 255.0f, 0.0f, 255.0f));
|
|
};
|
|
u8 gray = to_byte(w_val / (w_val + b_val));
|
|
return Color(gray, gray, gray, to_byte(alpha_val));
|
|
}
|
|
|
|
auto value = 1 - b_val;
|
|
auto saturation = 1 - (w_val / value);
|
|
return Color::from_hsv(h_val, saturation, value).with_opacity(alpha_val);
|
|
}
|
|
|
|
bool CSSHWB::equals(CSSStyleValue const& other) const
|
|
{
|
|
if (type() != other.type())
|
|
return false;
|
|
auto const& other_color = other.as_color();
|
|
if (color_type() != other_color.color_type())
|
|
return false;
|
|
auto const& other_hwb = as<CSSHWB>(other_color);
|
|
return m_properties == other_hwb.m_properties;
|
|
}
|
|
|
|
// https://www.w3.org/TR/css-color-4/#serializing-sRGB-values
|
|
String CSSHWB::to_string(SerializationMode) const
|
|
{
|
|
// FIXME: Do this properly, taking unresolved calculated values into account.
|
|
return serialize_a_srgb_value(to_color({}));
|
|
}
|
|
|
|
}
|