mirror of
https://github.com/bevyengine/bevy
synced 2024-11-26 06:30:19 +00:00
e8ae0d6c49
# Objective Fixes https://github.com/bevyengine/bevy/issues/11157. ## Solution Stop using `BackgroundColor` as a color tint for `UiImage`. Add a `UiImage::color` field for color tint instead. Allow a UI node to simultaneously include a solid-color background and an image, with the image rendered on top of the background (this is already how it works for e.g. text).  --- ## Changelog - The `BackgroundColor` component now renders a solid-color background behind `UiImage` instead of tinting its color. - Removed `BackgroundColor` from `ImageBundle`, `AtlasImageBundle`, and `ButtonBundle`. - Added `UiImage::color`. - Expanded `RenderUiSystem` variants. - Renamed `bevy_ui::extract_text_uinodes` to `extract_uinodes_text` for consistency. ## Migration Guide - `BackgroundColor` no longer tints the color of UI images. Use `UiImage::color` for that instead. - For solid color buttons, replace `ButtonBundle { background_color: my_color.into(), ... }` with `ButtonBundle { image: UiImage::default().with_color(my_color), ... }`, and update button interaction systems to use `UiImage::color` instead of `BackgroundColor` as well. - `bevy_ui::RenderUiSystem::ExtractNode` has been split into `ExtractBackgrounds`, `ExtractImages`, `ExtractBorders`, and `ExtractText`. - `bevy_ui::extract_uinodes` has been split into `bevy_ui::extract_uinode_background_colors` and `bevy_ui::extract_uinode_images`. - `bevy_ui::extract_text_uinodes` has been renamed to `extract_uinode_text`.
81 lines
2.9 KiB
Rust
81 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(Color::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()
|
|
},
|
|
image: UiImage::default().with_color(Color::srgb(0.1, 0.5, 0.1)),
|
|
..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: Color::srgba(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()
|
|
},
|
|
image: UiImage::default().with_color(Color::srgb(0.5, 0.1, 0.5)),
|
|
..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: Color::srgba(1.0, 1.0, 1.0, 0.2),
|
|
},
|
|
));
|
|
});
|
|
});
|
|
}
|