mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2025-10-05 15:49:15 +00:00
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. 😅
74 lines
2.8 KiB
C++
74 lines
2.8 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>
|
|
#include <LibWeb/CSS/StyleValues/CalculatedStyleValue.h>
|
|
#include <LibWeb/CSS/StyleValues/PercentageStyleValue.h>
|
|
|
|
namespace Web::CSS {
|
|
|
|
Optional<Color> CSSHWB::to_color(ColorResolutionContext color_resolution_context) const
|
|
{
|
|
auto h_val = resolve_hue(m_properties.h, color_resolution_context.calculation_resolution_context);
|
|
auto raw_w_value = resolve_with_reference_value(m_properties.w, 100.0, color_resolution_context.calculation_resolution_context);
|
|
auto raw_b_value = resolve_with_reference_value(m_properties.b, 100.0, color_resolution_context.calculation_resolution_context);
|
|
auto alpha_val = resolve_alpha(m_properties.alpha, color_resolution_context.calculation_resolution_context);
|
|
|
|
if (!h_val.has_value() || !raw_w_value.has_value() || !raw_b_value.has_value() || !alpha_val.has_value())
|
|
return {};
|
|
|
|
auto w_val = clamp(raw_w_value.value(), 0, 100) / 100.0f;
|
|
auto b_val = clamp(raw_b_value.value(), 0, 100) / 100.0f;
|
|
|
|
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.value()));
|
|
}
|
|
|
|
auto value = 1 - b_val;
|
|
auto saturation = 1 - (w_val / value);
|
|
return Color::from_hsv(h_val.value(), saturation, value).with_opacity(alpha_val.value());
|
|
}
|
|
|
|
bool CSSHWB::equals(StyleValue 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 mode) const
|
|
{
|
|
if (auto color = to_color({}); color.has_value())
|
|
return serialize_a_srgb_value(color.value());
|
|
|
|
StringBuilder builder;
|
|
builder.append("hwb("sv);
|
|
serialize_hue_component(builder, mode, m_properties.h);
|
|
builder.append(" "sv);
|
|
serialize_color_component(builder, mode, m_properties.w, 100, 0);
|
|
builder.append(" "sv);
|
|
serialize_color_component(builder, mode, m_properties.b, 100, 0);
|
|
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)) {
|
|
builder.append(" / "sv);
|
|
serialize_alpha_component(builder, mode, m_properties.alpha);
|
|
}
|
|
builder.append(")"sv);
|
|
|
|
return builder.to_string_without_validation();
|
|
}
|
|
|
|
}
|