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#[cfg(test)]
mod tests;
mod from;
mod opts;
mod transform;
use crate::common::{approx::approx_def, hsl_hsv_from_str, tuple_to_string, ColorIter, Hs};
use crate::consts::RATIO_MAX;
use crate::normalize::{normalize_hue, normalize_percent, normalize_ratio};
use crate::{ColorAlpha, ColorTuple, ColorTupleA, ParseError, Rgb};
#[derive(Debug, PartialEq, Clone)]
pub struct Hsl {
h: f64,
s: f64,
l: f64,
a: Option<f64>,
}
impl Hsl {
fn _apply_tuple(&mut self, t: &ColorTuple) {
self.h = t.0;
self.s = t.1;
self.l = t.2;
}
pub fn new(h: f64, s: f64, l: f64, a: Option<f64>) -> Hsl {
let a = a.map(normalize_ratio).filter(|al| !approx_def(*al, RATIO_MAX));
let np = normalize_percent;
Hsl { h: normalize_hue(h), s: np(s), l: np(l), a }
}
pub fn to_css_string(&self) -> String {
let t: ColorTupleA = self.into();
tuple_to_string(&t, "hsl")
}
pub fn get_hue(&self) -> f64 {
self.h
}
pub fn get_saturation(&self) -> f64 {
self.s
}
pub fn get_lightness(&self) -> f64 {
self.l
}
pub fn set_hue(&mut self, val: f64) {
self.h = normalize_hue(val);
}
pub fn set_saturation(&mut self, val: f64) {
self.s = normalize_percent(val);
}
pub fn set_lightness(&mut self, val: f64) {
self.l = normalize_percent(val);
}
pub fn iter(&self) -> ColorIter {
ColorIter::from_tuple_w_alpha(self.into(), self.a)
}
}
impl Default for Hsl {
fn default() -> Hsl {
Hsl { h: 0.0, s: 0.0, l: 0.0, a: None }
}
}
impl AsRef<Hsl> for Hsl {
fn as_ref(&self) -> &Hsl {
&self
}
}
impl std::str::FromStr for Hsl {
type Err = ParseError;
fn from_str(s: &str) -> Result<Hsl, ParseError> {
let (tuple, alpha) = hsl_hsv_from_str(s, Hs::Hsl)?;
let mut hsl = Hsl::from(&tuple);
if let Some(a) = alpha {
hsl.set_alpha(a);
}
Ok(hsl)
}
}
impl ColorAlpha for Hsl {
fn get_alpha(&self) -> f64 {
self.a.unwrap_or(1.0)
}
fn set_alpha(&mut self, val: f64) {
self.a = Some(normalize_ratio(val));
}
fn opacify(&mut self, val: f64) {
self.set_alpha(self.get_alpha() + val);
}
}
impl<'a> std::iter::IntoIterator for &'a Hsl {
type Item = f64;
type IntoIter = ColorIter;
fn into_iter(self) -> ColorIter {
self.iter()
}
}
impl std::iter::IntoIterator for Hsl {
type Item = f64;
type IntoIter = ColorIter;
fn into_iter(self) -> ColorIter {
self.iter()
}
}