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>
82 lines
2.9 KiB
Rust
82 lines
2.9 KiB
Rust
//! Demonstrates how to use transparency with UI.
|
|
//! Shows two colored buttons with transparent text.
|
|
|
|
use bevy::prelude::*;
|
|
|
|
fn main() {
|
|
App::new()
|
|
.insert_resource(ClearColor(LegacyColor::BLACK))
|
|
.add_plugins(DefaultPlugins)
|
|
.add_systems(Startup, setup)
|
|
.run();
|
|
}
|
|
|
|
fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
|
|
commands.spawn(Camera2dBundle::default());
|
|
|
|
let font_handle = asset_server.load("fonts/FiraSans-Bold.ttf");
|
|
|
|
commands
|
|
.spawn(NodeBundle {
|
|
style: Style {
|
|
width: Val::Percent(100.0),
|
|
height: Val::Percent(100.0),
|
|
align_items: AlignItems::Center,
|
|
justify_content: JustifyContent::SpaceAround,
|
|
..default()
|
|
},
|
|
..default()
|
|
})
|
|
.with_children(|parent| {
|
|
parent
|
|
.spawn(ButtonBundle {
|
|
style: Style {
|
|
width: Val::Px(150.0),
|
|
height: Val::Px(65.0),
|
|
justify_content: JustifyContent::Center,
|
|
align_items: AlignItems::Center,
|
|
..default()
|
|
},
|
|
background_color: LegacyColor::rgb(0.1, 0.5, 0.1).into(),
|
|
..default()
|
|
})
|
|
.with_children(|parent| {
|
|
parent.spawn(TextBundle::from_section(
|
|
"Button 1",
|
|
TextStyle {
|
|
font: font_handle.clone(),
|
|
font_size: 40.0,
|
|
// Alpha channel of the color controls transparency.
|
|
color: LegacyColor::rgba(1.0, 1.0, 1.0, 0.2),
|
|
},
|
|
));
|
|
});
|
|
|
|
// Button with a different color,
|
|
// to demonstrate the text looks different due to its transparency.
|
|
parent
|
|
.spawn(ButtonBundle {
|
|
style: Style {
|
|
width: Val::Px(150.0),
|
|
height: Val::Px(65.0),
|
|
justify_content: JustifyContent::Center,
|
|
align_items: AlignItems::Center,
|
|
..default()
|
|
},
|
|
background_color: LegacyColor::rgb(0.5, 0.1, 0.5).into(),
|
|
..default()
|
|
})
|
|
.with_children(|parent| {
|
|
parent.spawn(TextBundle::from_section(
|
|
"Button 2",
|
|
TextStyle {
|
|
font: font_handle.clone(),
|
|
font_size: 40.0,
|
|
// Alpha channel of the color controls transparency.
|
|
color: LegacyColor::rgba(1.0, 1.0, 1.0, 0.2),
|
|
},
|
|
));
|
|
});
|
|
});
|
|
}
|