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//! Navigate an endless amount of content with a scrollbar.
use iced_core::{Background, Color};
/// The appearance of a scrollable.
#[derive(Debug, Clone, Copy)]
pub struct Scrollbar {
pub background: Option<Background>,
pub border_radius: f32,
pub border_width: f32,
pub border_color: Color,
pub scroller: Scroller,
}
/// The appearance of the scroller of a scrollable.
#[derive(Debug, Clone, Copy)]
pub struct Scroller {
pub color: Color,
pub border_radius: f32,
pub border_width: f32,
pub border_color: Color,
}
/// A set of rules that dictate the style of a scrollable.
pub trait StyleSheet {
/// Produces the style of an active scrollbar.
fn active(&self) -> Scrollbar;
/// Produces the style of an hovered scrollbar.
fn hovered(&self) -> Scrollbar;
/// Produces the style of a scrollbar that is being dragged.
fn dragging(&self) -> Scrollbar {
self.hovered()
}
}
struct Default;
impl StyleSheet for Default {
fn active(&self) -> Scrollbar {
Scrollbar {
background: None,
border_radius: 5.0,
border_width: 0.0,
border_color: Color::TRANSPARENT,
scroller: Scroller {
color: [0.0, 0.0, 0.0, 0.7].into(),
border_radius: 5.0,
border_width: 0.0,
border_color: Color::TRANSPARENT,
},
}
}
fn hovered(&self) -> Scrollbar {
Scrollbar {
background: Some(Background::Color([0.0, 0.0, 0.0, 0.3].into())),
..self.active()
}
}
}
impl std::default::Default for &'static dyn StyleSheet {
fn default() -> Self {
&Default
}
}
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