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// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License in the LICENSE-APACHE file or at:
// https://www.apache.org/licenses/LICENSE-2.0
//! Filler widget
use kas::prelude::*;
#[impl_self]
mod Filler {
/// A space filler
///
/// This widget has zero minimum size but can expand according to the given
/// stretch priority.
#[derive(Debug, Default)]
#[widget]
pub struct Filler {
core: widget_core!(),
horiz: Stretch,
vert: Stretch,
}
impl Layout for Filler {
fn size_rules(&mut self, _: &mut SizeCx, axis: AxisInfo) -> SizeRules {
let stretch = if axis.is_horizontal() { self.horiz } else { self.vert };
SizeRules::empty(stretch)
}
fn draw(&self, _: DrawCx) {}
}
impl Tile for Self {
fn role(&self, _: &mut dyn RoleCx) -> Role<'_> {
Role::None
}
}
}
impl Filler {
/// Construct a filler with priority [`Stretch::Filler`]
pub fn new() -> Self {
Filler::with(Stretch::Filler)
}
/// Construct a filler with priority [`Stretch::Low`]
pub fn low() -> Self {
Filler::with(Stretch::Low)
}
/// Construct a filler with priority [`Stretch::High`]
pub fn high() -> Self {
Filler::with(Stretch::High)
}
/// Construct a filler with priority [`Stretch::Maximize`]
pub fn maximize() -> Self {
Filler::with(Stretch::Maximize)
}
/// Construct with a custom stretch priority
pub fn with(stretch: Stretch) -> Self {
Filler::with_hv(stretch, stretch)
}
/// Construct with custom horizontal and vertical priorities
pub fn with_hv(horiz: Stretch, vert: Stretch) -> Self {
let core = Default::default();
Filler { core, horiz, vert }
}
}