mirror of
https://github.com/bevyengine/bevy
synced 2024-11-26 06:30:19 +00:00
de004da8d5
# Objective The migration process for `bevy_color` (#12013) will be fairly involved: there will be hundreds of affected files, and a large number of APIs. ## Solution To allow us to proceed granularly, we're going to keep both `bevy_color::Color` (new) and `bevy_render::Color` (old) around until the migration is complete. However, simply doing this directly is confusing! They're both called `Color`, making it very hard to tell when a portion of the code has been ported. As discussed in #12056, by renaming the old `Color` type, we can make it easier to gradually migrate over, one API at a time. ## Migration Guide THIS MIGRATION GUIDE INTENTIONALLY LEFT BLANK. This change should not be shipped to end users: delete this section in the final migration guide! --------- Co-authored-by: Alice Cecile <alice.i.cecil@gmail.com>
95 lines
3.2 KiB
Rust
95 lines
3.2 KiB
Rust
//! Showcases the [`RelativeCursorPosition`] component, used to check the position of the cursor relative to a UI node.
|
|
|
|
use bevy::{
|
|
prelude::*, render::camera::Viewport, ui::RelativeCursorPosition, 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, relative_cursor_position_system)
|
|
.run();
|
|
}
|
|
|
|
fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
|
|
commands.spawn(Camera2dBundle {
|
|
camera: Camera {
|
|
// Cursor position will take the viewport offset into account
|
|
viewport: Some(Viewport {
|
|
physical_position: [200, 100].into(),
|
|
physical_size: [600, 600].into(),
|
|
..default()
|
|
}),
|
|
..default()
|
|
},
|
|
..default()
|
|
});
|
|
|
|
commands
|
|
.spawn(NodeBundle {
|
|
style: Style {
|
|
width: Val::Percent(100.),
|
|
height: Val::Percent(100.0),
|
|
align_items: AlignItems::Center,
|
|
justify_content: JustifyContent::Center,
|
|
flex_direction: FlexDirection::Column,
|
|
..default()
|
|
},
|
|
..default()
|
|
})
|
|
.with_children(|parent| {
|
|
parent
|
|
.spawn(NodeBundle {
|
|
style: Style {
|
|
width: Val::Px(250.),
|
|
height: Val::Px(250.),
|
|
margin: UiRect::bottom(Val::Px(15.)),
|
|
..default()
|
|
},
|
|
background_color: LegacyColor::rgb(235., 35., 12.).into(),
|
|
..default()
|
|
})
|
|
.insert(RelativeCursorPosition::default());
|
|
|
|
parent.spawn(TextBundle {
|
|
text: Text::from_section(
|
|
"(0.0, 0.0)",
|
|
TextStyle {
|
|
font: asset_server.load("fonts/FiraSans-Bold.ttf"),
|
|
font_size: 40.0,
|
|
color: LegacyColor::rgb(0.9, 0.9, 0.9),
|
|
},
|
|
),
|
|
..default()
|
|
});
|
|
});
|
|
}
|
|
|
|
/// This systems polls the relative cursor position and displays its value in a text component.
|
|
fn relative_cursor_position_system(
|
|
relative_cursor_position_query: Query<&RelativeCursorPosition>,
|
|
mut output_query: Query<&mut Text>,
|
|
) {
|
|
let relative_cursor_position = relative_cursor_position_query.single();
|
|
|
|
let mut output = output_query.single_mut();
|
|
|
|
output.sections[0].value =
|
|
if let Some(relative_cursor_position) = relative_cursor_position.normalized {
|
|
format!(
|
|
"({:.1}, {:.1})",
|
|
relative_cursor_position.x, relative_cursor_position.y
|
|
)
|
|
} else {
|
|
"unknown".to_string()
|
|
};
|
|
|
|
output.sections[0].style.color = if relative_cursor_position.mouse_over() {
|
|
LegacyColor::rgb(0.1, 0.9, 0.1)
|
|
} else {
|
|
LegacyColor::rgb(0.9, 0.1, 0.1)
|
|
};
|
|
}
|