bevy/examples/window/scale_factor_override.rs
Nico Burns 08bf1a6c2e
Flatten UI Style properties that use Size + remove Size (#8548)
# Objective

- Simplify API and make authoring styles easier

See:
https://github.com/bevyengine/bevy/issues/8540#issuecomment-1536177102

## Solution

- The `size`, `min_size`, `max_size`, and `gap` properties have been
replaced by `width`, `height`, `min_width`, `min_height`, `max_width`,
`max_height`, `row_gap`, and `column_gap` properties

---

## Changelog

- Flattened `Style` properties that have a `Size` value directly into
`Style`

## Migration Guide

- The `size`, `min_size`, `max_size`, and `gap` properties have been
replaced by the `width`, `height`, `min_width`, `min_height`,
`max_width`, `max_height`, `row_gap`, and `column_gap` properties. Use
the new properties instead.

---------

Co-authored-by: ickshonpe <david.curthoys@googlemail.com>
2023-05-16 01:36:32 +00:00

103 lines
3.4 KiB
Rust

//! This example illustrates how to override the window scale factor imposed by the
//! operating system.
use bevy::{prelude::*, window::WindowResolution};
fn main() {
App::new()
.add_plugins(DefaultPlugins.set(WindowPlugin {
primary_window: Some(Window {
resolution: WindowResolution::new(500., 300.).with_scale_factor_override(1.0),
..default()
}),
..default()
}))
.add_systems(Startup, setup)
.add_systems(
Update,
(display_override, toggle_override, change_scale_factor),
)
.run();
}
fn setup(mut commands: Commands) {
// camera
commands.spawn(Camera2dBundle::default());
// root node
commands
.spawn(NodeBundle {
style: Style {
width: Val::Percent(100.0),
justify_content: JustifyContent::SpaceBetween,
..default()
},
..default()
})
.with_children(|parent| {
// left vertical fill (border)
parent
.spawn(NodeBundle {
style: Style {
width: Val::Px(200.0),
height: Val::Percent(100.0),
border: UiRect::all(Val::Px(2.0)),
..default()
},
background_color: Color::rgb(0.65, 0.65, 0.65).into(),
..default()
})
.with_children(|parent| {
parent.spawn(
TextBundle::from_section(
"Example text",
TextStyle {
font_size: 30.0,
color: Color::WHITE,
..default()
},
)
.with_style(Style {
align_self: AlignSelf::FlexEnd,
..default()
}),
);
});
});
}
/// Set the title of the window to the current override
fn display_override(mut windows: Query<&mut Window>) {
let mut window = windows.single_mut();
window.title = format!(
"Scale override: {:?}",
window.resolution.scale_factor_override()
);
}
/// This system toggles scale factor overrides when enter is pressed
fn toggle_override(input: Res<Input<KeyCode>>, mut windows: Query<&mut Window>) {
let mut window = windows.single_mut();
if input.just_pressed(KeyCode::Return) {
let scale_factor_override = window.resolution.scale_factor_override();
window
.resolution
.set_scale_factor_override(scale_factor_override.xor(Some(1.0)));
}
}
/// This system changes the scale factor override when up or down is pressed
fn change_scale_factor(input: Res<Input<KeyCode>>, mut windows: Query<&mut Window>) {
let mut window = windows.single_mut();
let scale_factor_override = window.resolution.scale_factor_override();
if input.just_pressed(KeyCode::Up) {
window
.resolution
.set_scale_factor_override(scale_factor_override.map(|n| n + 1.0));
} else if input.just_pressed(KeyCode::Down) {
window
.resolution
.set_scale_factor_override(scale_factor_override.map(|n| (n - 1.0).max(1.0)));
}
}