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//! Change the appearance of a container.
use crate::core::{Background, Border, Color, Pixels, Shadow};
/// The appearance of a container.
#[derive(Debug, Clone, Copy, Default)]
pub struct Appearance {
/// The text [`Color`] of the container.
pub text_color: Option<Color>,
/// The [`Background`] of the container.
pub background: Option<Background>,
/// The [`Border`] of the container.
pub border: Border,
/// The [`Shadow`] of the container.
pub shadow: Shadow,
}
impl Appearance {
/// Derives a new [`Appearance`] with a border of the given [`Color`] and
/// `width`.
pub fn with_border(
self,
color: impl Into<Color>,
width: impl Into<Pixels>,
) -> Self {
Self {
border: Border {
color: color.into(),
width: width.into().0,
..Border::default()
},
..self
}
}
/// Derives a new [`Appearance`] with the given [`Background`].
pub fn with_background(self, background: impl Into<Background>) -> Self {
Self {
background: Some(background.into()),
..self
}
}
}
/// A set of rules that dictate the [`Appearance`] of a container.
pub trait StyleSheet {
/// The supported style of the [`StyleSheet`].
type Style: Default;
/// Produces the [`Appearance`] of a container.
fn appearance(&self, style: &Self::Style) -> Appearance;
}