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overflow.rs
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/
overflow.rs
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//! Simple example demonstrating overflow behavior.
use bevy::{color::palettes::css::*, prelude::*, winit::WinitSettings};
fn main() {
App::new()
.add_plugins(DefaultPlugins)
// Only run the app when there is user input. This will significantly reduce CPU/GPU use.
.insert_resource(WinitSettings::desktop_app())
.add_systems(Startup, setup)
.add_systems(Update, update_outlines)
.run();
}
fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
commands.spawn(Camera2d);
let text_style = TextFont::default();
let image = asset_server.load("branding/icon.png");
commands
.spawn((
Node {
width: Val::Percent(100.),
height: Val::Percent(100.),
align_items: AlignItems::Center,
justify_content: JustifyContent::Center,
..Default::default()
},
BackgroundColor(ANTIQUE_WHITE.into()),
))
.with_children(|parent| {
for overflow in [
Overflow::visible(),
Overflow::clip_x(),
Overflow::clip_y(),
Overflow::clip(),
] {
parent
.spawn(Node {
flex_direction: FlexDirection::Column,
align_items: AlignItems::Center,
margin: UiRect::horizontal(Val::Px(25.)),
..Default::default()
})
.with_children(|parent| {
let label = format!("{overflow:#?}");
parent
.spawn((
Node {
padding: UiRect::all(Val::Px(10.)),
margin: UiRect::bottom(Val::Px(25.)),
..Default::default()
},
BackgroundColor(Color::srgb(0.25, 0.25, 0.25)),
))
.with_children(|parent| {
parent.spawn((Text::new(label), text_style.clone()));
});
parent
.spawn((
Node {
width: Val::Px(100.),
height: Val::Px(100.),
padding: UiRect {
left: Val::Px(25.),
top: Val::Px(25.),
..Default::default()
},
border: UiRect::all(Val::Px(5.)),
overflow,
..default()
},
BorderColor(Color::BLACK),
BackgroundColor(GRAY.into()),
))
.with_children(|parent| {
parent.spawn((
UiImage::new(image.clone()),
Node {
min_width: Val::Px(100.),
min_height: Val::Px(100.),
..default()
},
Interaction::default(),
Outline {
width: Val::Px(2.),
offset: Val::Px(2.),
color: Color::NONE,
},
));
});
});
}
});
}
fn update_outlines(mut outlines_query: Query<(&mut Outline, Ref<Interaction>)>) {
for (mut outline, interaction) in outlines_query.iter_mut() {
if interaction.is_changed() {
outline.color = match *interaction {
Interaction::Pressed => RED.into(),
Interaction::Hovered => WHITE.into(),
Interaction::None => Color::NONE,
};
}
}
}