Created
June 5, 2025 08:48
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Bevy Hover Tooltip Plugin
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| use bevy::prelude::*; | |
| use crate::observe::Observe; | |
| pub fn tooltip(text: &'static str) -> impl Bundle { | |
| ( | |
| Observe::event(tooltip_hover_start(text)), | |
| Observe::event(tooltip_hover), | |
| Observe::event(tooltip_hover_end), | |
| ) | |
| } | |
| #[derive(Debug, Clone, Copy, Component)] | |
| struct Tooltip; | |
| fn tooltip_bundle(text: &str) -> impl Bundle { | |
| ( | |
| Tooltip, | |
| Node { | |
| padding: UiRect::all(Val::Px(8.0)), | |
| ..default() | |
| }, | |
| BackgroundColor(Color::BLACK.with_alpha(0.8)), | |
| BorderRadius::all(Val::Px(8.0)), | |
| children![(Text::new(text), Pickable::IGNORE)], | |
| ) | |
| } | |
| fn tooltip_hover_start(text: &str) -> impl Fn(Trigger<Pointer<Over>>, Commands) { | |
| move |_, mut commands| { | |
| commands.spawn(tooltip_bundle(text)); | |
| } | |
| } | |
| fn tooltip_hover(trigger: Trigger<Pointer<Move>>, mut tooltip: Single<&mut Node, With<Tooltip>>) { | |
| tooltip.top = Val::Px(trigger.pointer_location.position.y); | |
| tooltip.left = Val::Px(trigger.pointer_location.position.x); | |
| } | |
| fn tooltip_hover_end( | |
| _: Trigger<Pointer<Out>>, | |
| tooltips: Query<Entity, With<Tooltip>>, | |
| mut commands: Commands, | |
| ) { | |
| tooltips | |
| .iter() | |
| .for_each(|tooltip| commands.entity(tooltip).despawn()); | |
| } |
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