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//! Change the appearance of a scrollable.
use iced_core::{Background, BorderRadius, Color};
/// The appearance of a scrollable.
#[derive(Debug, Clone, Copy)]
pub struct Scrollbar {
/// The [`Background`] of a scrollable.
pub background: Option<Background>,
/// The border radius of a scrollable.
pub border_radius: BorderRadius,
/// The border width of a scrollable.
pub border_width: f32,
/// The border [`Color`] of a scrollable.
pub border_color: Color,
/// The appearance of the [`Scroller`] of a scrollable.
pub scroller: Scroller,
}
/// The appearance of the scroller of a scrollable.
#[derive(Debug, Clone, Copy)]
pub struct Scroller {
/// The [`Color`] of the scroller.
pub color: Color,
/// The border radius of the scroller.
pub border_radius: BorderRadius,
/// The border width of the scroller.
pub border_width: f32,
/// The border [`Color`] of the scroller.
pub border_color: Color,
}
/// A set of rules that dictate the style of a scrollable.
pub trait StyleSheet {
/// The supported style of the [`StyleSheet`].
type Style: Default;
/// Produces the style of an active scrollbar.
fn active(&self, style: &Self::Style) -> Scrollbar;
/// Produces the style of a scrollbar when the scrollable is being hovered.
fn hovered(
&self,
style: &Self::Style,
is_mouse_over_scrollbar: bool,
) -> Scrollbar;
/// Produces the style of a scrollbar that is being dragged.
fn dragging(&self, style: &Self::Style) -> Scrollbar {
self.hovered(style, true)
}
/// Produces the style of an active horizontal scrollbar.
fn active_horizontal(&self, style: &Self::Style) -> Scrollbar {
self.active(style)
}
/// Produces the style of a horizontal scrollbar when the scrollable is being hovered.
fn hovered_horizontal(
&self,
style: &Self::Style,
is_mouse_over_scrollbar: bool,
) -> Scrollbar {
self.hovered(style, is_mouse_over_scrollbar)
}
/// Produces the style of a horizontal scrollbar that is being dragged.
fn dragging_horizontal(&self, style: &Self::Style) -> Scrollbar {
self.hovered_horizontal(style, true)
}
}
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