many_glyphs.rs:
use bevy::{
color::palettes::basic::RED,
diagnostic::{FrameTimeDiagnosticsPlugin, LogDiagnosticsPlugin},
prelude::*,
text::{LineBreak, TextBounds},
window::{PresentMode, WindowResolution},
winit::{UpdateMode, WinitSettings},
};
fn main() {
let mut app = App::new();
app.add_plugins((
DefaultPlugins.set(WindowPlugin {
primary_window: Some(Window {
present_mode: PresentMode::AutoNoVsync,
resolution: WindowResolution::new(1920.0, 1080.0).with_scale_factor_override(1.0),
..default()
}),
..default()
}),
FrameTimeDiagnosticsPlugin,
LogDiagnosticsPlugin::default(),
))
.insert_resource(WinitSettings {
focused_mode: UpdateMode::Continuous,
unfocused_mode: UpdateMode::Continuous,
})
.add_systems(Startup, setup);
if std::env::args().any(|arg| arg == "recompute-text") {
app.add_systems(Update, force_text_recomputation);
}
app.run();
}
fn setup(mut commands: Commands) {
warn!(include_str!("warning_string.txt"));
commands.spawn(Camera2d);
let text_string = "0123456789".repeat(10_000);
let text_font = TextFont {
font_size: 4.,
..Default::default()
};
let text_block = TextLayout {
justify: JustifyText::Left,
linebreak: LineBreak::AnyCharacter,
};
commands
.spawn(Node {
width: Val::Percent(100.),
align_items: AlignItems::Center,
justify_content: JustifyContent::Center,
..default()
})
.with_children(|commands| {
commands
.spawn(Node {
width: Val::Px(1000.),
..Default::default()
})
.with_child((Text(text_string.clone()), text_font.clone(), text_block));
});
commands.spawn((
Text2d::new(text_string),
TextColor(RED.into()),
bevy::sprite::Anchor::Center,
TextBounds::new_horizontal(1000.),
text_block,
));
}
fn force_text_recomputation(mut text_query: Query<&mut TextLayout>) {
for mut block in &mut text_query {
block.set_changed();
}
}