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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::*;
/// A space filler
///
/// This widget has zero minimum size but can expand according to the given
/// stretch policy.
#[derive(Clone, Debug, Default, Widget)]
pub struct Filler {
#[widget_core]
core: CoreData,
policy: StretchPolicy,
}
impl Layout for Filler {
fn size_rules(&mut self, _: &mut dyn SizeHandle, _: AxisInfo) -> SizeRules {
SizeRules::empty(self.policy)
}
fn draw(&self, _: &mut dyn DrawHandle, _: &event::ManagerState, _: bool) {}
}
impl Filler {
/// Construct a filler with policy [`StretchPolicy::Filler`]
pub fn new() -> Self {
Filler::with_policy(StretchPolicy::Filler)
}
/// Construct a filler with policy [`StretchPolicy::Maximise`]
pub fn maximise() -> Self {
Filler::with_policy(StretchPolicy::Maximise)
}
/// Construct with a custom stretch policy
pub fn with_policy(policy: StretchPolicy) -> Self {
Filler {
core: Default::default(),
policy,
}
}
}