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|
use iced_core::Color;
use once_cell::sync::Lazy;
use palette::{FromColor, Hsl, Mix, RelativeContrast, Srgb};
#[derive(Debug, Clone, Copy, PartialEq)]
pub struct Palette {
pub background: Color,
pub text: Color,
pub primary: Color,
pub success: Color,
pub danger: Color,
}
impl Palette {
pub const LIGHT: Self = Self {
background: Color::WHITE,
text: Color::BLACK,
primary: Color::from_rgb(
0x5E as f32 / 255.0,
0x7C as f32 / 255.0,
0xE2 as f32 / 255.0,
),
success: Color::from_rgb(
0x12 as f32 / 255.0,
0x66 as f32 / 255.0,
0x4F as f32 / 255.0,
),
danger: Color::from_rgb(
0xC3 as f32 / 255.0,
0x42 as f32 / 255.0,
0x3F as f32 / 255.0,
),
};
pub const DARK: Self = Self {
background: Color::from_rgb(
0x20 as f32 / 255.0,
0x22 as f32 / 255.0,
0x25 as f32 / 255.0,
),
text: Color::from_rgb(0.90, 0.90, 0.90),
primary: Color::from_rgb(
0x5E as f32 / 255.0,
0x7C as f32 / 255.0,
0xE2 as f32 / 255.0,
),
success: Color::from_rgb(
0x12 as f32 / 255.0,
0x66 as f32 / 255.0,
0x4F as f32 / 255.0,
),
danger: Color::from_rgb(
0xC3 as f32 / 255.0,
0x42 as f32 / 255.0,
0x3F as f32 / 255.0,
),
};
}
#[derive(Debug, Clone, Copy, PartialEq)]
pub struct Extended {
pub background: Background,
pub primary: Primary,
pub secondary: Secondary,
pub success: Success,
pub danger: Danger,
}
pub static EXTENDED_LIGHT: Lazy<Extended> =
Lazy::new(|| Extended::generate(Palette::LIGHT));
pub static EXTENDED_DARK: Lazy<Extended> =
Lazy::new(|| Extended::generate(Palette::DARK));
impl Extended {
pub fn generate(palette: Palette) -> Self {
Self {
background: Background::new(palette.background, palette.text),
primary: Primary::generate(
palette.primary,
palette.background,
palette.text,
),
secondary: Secondary::generate(palette.background, palette.text),
success: Success::generate(
palette.success,
palette.background,
palette.text,
),
danger: Danger::generate(
palette.danger,
palette.background,
palette.text,
),
}
}
}
#[derive(Debug, Clone, Copy, PartialEq)]
pub struct Pair {
pub color: Color,
pub text: Color,
}
impl Pair {
pub fn new(color: Color, text: Color) -> Self {
Self {
color,
text: readable(color, text),
}
}
}
#[derive(Debug, Clone, Copy, PartialEq)]
pub struct Background {
pub base: Pair,
pub weak: Pair,
pub strong: Pair,
}
impl Background {
pub fn new(base: Color, text: Color) -> Self {
let weak = mix(base, text, 0.15);
let strong = mix(base, text, 0.40);
Self {
base: Pair::new(base, text),
weak: Pair::new(weak, text),
strong: Pair::new(strong, text),
}
}
}
#[derive(Debug, Clone, Copy, PartialEq)]
pub struct Primary {
pub base: Pair,
pub weak: Pair,
pub strong: Pair,
}
impl Primary {
pub fn generate(base: Color, background: Color, text: Color) -> Self {
let weak = mix(base, background, 0.4);
let strong = deviate(base, 0.1);
Self {
base: Pair::new(base, text),
weak: Pair::new(weak, text),
strong: Pair::new(strong, text),
}
}
}
#[derive(Debug, Clone, Copy, PartialEq)]
pub struct Secondary {
pub base: Pair,
pub weak: Pair,
pub strong: Pair,
}
impl Secondary {
pub fn generate(base: Color, text: Color) -> Self {
let base = mix(base, text, 0.2);
let weak = mix(base, text, 0.1);
let strong = mix(base, text, 0.3);
Self {
base: Pair::new(base, text),
weak: Pair::new(weak, text),
strong: Pair::new(strong, text),
}
}
}
#[derive(Debug, Clone, Copy, PartialEq)]
pub struct Success {
pub base: Pair,
pub weak: Pair,
pub strong: Pair,
}
impl Success {
pub fn generate(base: Color, background: Color, text: Color) -> Self {
let weak = mix(base, background, 0.4);
let strong = deviate(base, 0.1);
Self {
base: Pair::new(base, text),
weak: Pair::new(weak, text),
strong: Pair::new(strong, text),
}
}
}
#[derive(Debug, Clone, Copy, PartialEq)]
pub struct Danger {
pub base: Pair,
pub weak: Pair,
pub strong: Pair,
}
impl Danger {
pub fn generate(base: Color, background: Color, text: Color) -> Self {
let weak = mix(base, background, 0.4);
let strong = deviate(base, 0.1);
Self {
base: Pair::new(base, text),
weak: Pair::new(weak, text),
strong: Pair::new(strong, text),
}
}
}
fn darken(color: Color, amount: f32) -> Color {
let mut hsl = to_hsl(color);
hsl.lightness = if hsl.lightness - amount < 0.0 {
0.0
} else {
hsl.lightness - amount
};
from_hsl(hsl)
}
fn lighten(color: Color, amount: f32) -> Color {
let mut hsl = to_hsl(color);
hsl.lightness = if hsl.lightness + amount > 1.0 {
1.0
} else {
hsl.lightness + amount
};
from_hsl(hsl)
}
fn deviate(color: Color, amount: f32) -> Color {
if is_dark(color) {
lighten(color, amount)
} else {
darken(color, amount)
}
}
fn mix(a: Color, b: Color, factor: f32) -> Color {
let a_lin = Srgb::from(a).into_linear();
let b_lin = Srgb::from(b).into_linear();
let mixed = a_lin.mix(&b_lin, factor);
Srgb::from_linear(mixed).into()
}
fn readable(background: Color, text: Color) -> Color {
if is_readable(background, text) {
text
} else if is_dark(background) {
Color::WHITE
} else {
Color::BLACK
}
}
fn is_dark(color: Color) -> bool {
to_hsl(color).lightness < 0.6
}
fn is_readable(a: Color, b: Color) -> bool {
let a_srgb = Srgb::from(a);
let b_srgb = Srgb::from(b);
a_srgb.has_enhanced_contrast_text(&b_srgb)
}
fn to_hsl(color: Color) -> Hsl {
Hsl::from_color(Srgb::from(color))
}
fn from_hsl(hsl: Hsl) -> Color {
Srgb::from_color(hsl).into()
}
|
