mirror of
https://github.com/bevyengine/bevy
synced 2024-11-14 00:47:32 +00:00
1918608b02
# Objective - Changes the default clear color to match the code block color on Bevy's website. ## Solution - Changed the clear color, updated text in examples to ensure adequate contrast. Inconsistent usage of white text color set to use the default color instead, which is already white. - Additionally, updated the `3d_scene` example to make it look a bit better, and use bevy's branding colors. 
230 lines
10 KiB
Rust
230 lines
10 KiB
Rust
//! Demonstrates how CSS Grid layout can be used to lay items out in a 2D grid
|
|
use bevy::prelude::*;
|
|
|
|
fn main() {
|
|
App::new()
|
|
.add_plugins(DefaultPlugins.set(WindowPlugin {
|
|
primary_window: Some(Window {
|
|
resolution: [800., 600.].into(),
|
|
title: "Bevy CSS Grid Layout Example".to_string(),
|
|
..default()
|
|
}),
|
|
..default()
|
|
}))
|
|
.add_systems(Startup, spawn_layout)
|
|
.run();
|
|
}
|
|
|
|
fn spawn_layout(mut commands: Commands, asset_server: Res<AssetServer>) {
|
|
let font = asset_server.load("fonts/FiraSans-Bold.ttf");
|
|
commands.spawn(Camera2dBundle::default());
|
|
|
|
// Top-level grid (app frame)
|
|
commands
|
|
.spawn(NodeBundle {
|
|
style: Style {
|
|
// Use the CSS Grid algorithm for laying out this node
|
|
display: Display::Grid,
|
|
// Make node fill the entirety it's parent (in this case the window)
|
|
width: Val::Percent(100.0),
|
|
height: Val::Percent(100.0),
|
|
// Set the grid to have 2 columns with sizes [min-content, minmax(0, 1fr)]
|
|
// - The first column will size to the size of it's contents
|
|
// - The second column will take up the remaining available space
|
|
grid_template_columns: vec![GridTrack::min_content(), GridTrack::flex(1.0)],
|
|
// Set the grid to have 3 rows with sizes [auto, minmax(0, 1fr), 20px]
|
|
// - The first row will size to the size of it's contents
|
|
// - The second row take up remaining available space (after rows 1 and 3 have both been sized)
|
|
// - The third row will be exactly 20px high
|
|
grid_template_rows: vec![
|
|
GridTrack::auto(),
|
|
GridTrack::flex(1.0),
|
|
GridTrack::px(20.),
|
|
],
|
|
..default()
|
|
},
|
|
background_color: BackgroundColor(Color::WHITE),
|
|
..default()
|
|
})
|
|
.with_children(|builder| {
|
|
// Header
|
|
builder
|
|
.spawn(NodeBundle {
|
|
style: Style {
|
|
display: Display::Grid,
|
|
// Make this node span two grid columns so that it takes up the entire top tow
|
|
grid_column: GridPlacement::span(2),
|
|
padding: UiRect::all(Val::Px(6.0)),
|
|
..default()
|
|
},
|
|
..default()
|
|
})
|
|
.with_children(|builder| {
|
|
spawn_nested_text_bundle(builder, font.clone(), "Bevy CSS Grid Layout Example");
|
|
});
|
|
|
|
// Main content grid (auto placed in row 2, column 1)
|
|
builder
|
|
.spawn(NodeBundle {
|
|
style: Style {
|
|
// Make the height of the node fill its parent
|
|
height: Val::Percent(100.0),
|
|
// Make the grid have a 1:1 aspect ratio meaning it will scale as an exact square
|
|
// As the height is set explicitly, this means the width will adjust to match the height
|
|
aspect_ratio: Some(1.0),
|
|
// Use grid layout for this node
|
|
display: Display::Grid,
|
|
// Add 24px of padding around the grid
|
|
padding: UiRect::all(Val::Px(24.0)),
|
|
// Set the grid to have 4 columns all with sizes minmax(0, 1fr)
|
|
// This creates 4 exactly evenly sized columns
|
|
grid_template_columns: RepeatedGridTrack::flex(4, 1.0),
|
|
// Set the grid to have 4 rows all with sizes minmax(0, 1fr)
|
|
// This creates 4 exactly evenly sized rows
|
|
grid_template_rows: RepeatedGridTrack::flex(4, 1.0),
|
|
// Set a 12px gap/gutter between rows and columns
|
|
row_gap: Val::Px(12.0),
|
|
column_gap: Val::Px(12.0),
|
|
..default()
|
|
},
|
|
background_color: BackgroundColor(Color::DARK_GRAY),
|
|
..default()
|
|
})
|
|
.with_children(|builder| {
|
|
// Note there is no need to specify the position for each grid item. Grid items that are
|
|
// not given an explicit position will be automatically positioned into the next available
|
|
// grid cell. The order in which this is performed can be controlled using the grid_auto_flow
|
|
// style property.
|
|
|
|
item_rect(builder, Color::ORANGE);
|
|
item_rect(builder, Color::BISQUE);
|
|
item_rect(builder, Color::BLUE);
|
|
item_rect(builder, Color::CRIMSON);
|
|
|
|
item_rect(builder, Color::CYAN);
|
|
item_rect(builder, Color::ORANGE_RED);
|
|
item_rect(builder, Color::DARK_GREEN);
|
|
item_rect(builder, Color::FUCHSIA);
|
|
|
|
item_rect(builder, Color::TEAL);
|
|
item_rect(builder, Color::ALICE_BLUE);
|
|
item_rect(builder, Color::CRIMSON);
|
|
item_rect(builder, Color::ANTIQUE_WHITE);
|
|
|
|
item_rect(builder, Color::YELLOW);
|
|
item_rect(builder, Color::PINK);
|
|
item_rect(builder, Color::YELLOW_GREEN);
|
|
item_rect(builder, Color::SALMON);
|
|
});
|
|
|
|
// Right side bar (auto placed in row 2, column 2)
|
|
builder
|
|
.spawn(NodeBundle {
|
|
style: Style {
|
|
display: Display::Grid,
|
|
// Align content towards the start (top) in the vertical axis
|
|
align_items: AlignItems::Start,
|
|
// Align content towards the center in the horizontal axis
|
|
justify_items: JustifyItems::Center,
|
|
// Add 10px padding
|
|
padding: UiRect::all(Val::Px(10.)),
|
|
// Add an fr track to take up all the available space at the bottom of the column so that the text nodes
|
|
// can be top-aligned. Normally you'd use flexbox for this, but this is the CSS Grid example so we're using grid.
|
|
grid_template_rows: vec![GridTrack::auto(), GridTrack::auto(), GridTrack::fr(1.0)],
|
|
// Add a 10px gap between rows
|
|
row_gap: Val::Px(10.),
|
|
..default()
|
|
},
|
|
background_color: BackgroundColor(Color::BLACK),
|
|
..default()
|
|
})
|
|
.with_children(|builder| {
|
|
builder.spawn(TextBundle::from_section(
|
|
"Sidebar",
|
|
TextStyle {
|
|
font: font.clone(),
|
|
font_size: 24.0,
|
|
..default()
|
|
},
|
|
));
|
|
builder.spawn(TextBundle::from_section(
|
|
"A paragraph of text which ought to wrap nicely. A paragraph of text which ought to wrap nicely. A paragraph of text which ought to wrap nicely. A paragraph of text which ought to wrap nicely. A paragraph of text which ought to wrap nicely. A paragraph of text which ought to wrap nicely. A paragraph of text which ought to wrap nicely.",
|
|
TextStyle {
|
|
font: font.clone(),
|
|
font_size: 16.0,
|
|
..default()
|
|
},
|
|
));
|
|
builder.spawn(NodeBundle::default());
|
|
});
|
|
|
|
// Footer / status bar
|
|
builder.spawn(NodeBundle {
|
|
style: Style {
|
|
// Make this node span two grid column so that it takes up the entire bottom row
|
|
grid_column: GridPlacement::span(2),
|
|
..default()
|
|
},
|
|
background_color: BackgroundColor(Color::WHITE),
|
|
..default()
|
|
});
|
|
|
|
// Modal (absolutely positioned on top of content - currently hidden: to view it, change its visibility)
|
|
builder.spawn(NodeBundle {
|
|
visibility: Visibility::Hidden,
|
|
style: Style {
|
|
position_type: PositionType::Absolute,
|
|
margin: UiRect {
|
|
top: Val::Px(100.),
|
|
bottom: Val::Auto,
|
|
left: Val::Auto,
|
|
right: Val::Auto,
|
|
},
|
|
width: Val::Percent(60.),
|
|
height: Val::Px(300.),
|
|
max_width: Val::Px(600.),
|
|
..default()
|
|
},
|
|
background_color: BackgroundColor(Color::Rgba {
|
|
red: 255.0,
|
|
green: 255.0,
|
|
blue: 255.0,
|
|
alpha: 0.8,
|
|
}),
|
|
..default()
|
|
});
|
|
});
|
|
}
|
|
|
|
/// Create a coloured rectangle node. The node has size as it is assumed that it will be
|
|
/// spawned as a child of a Grid container with `AlignItems::Stretch` and `JustifyItems::Stretch`
|
|
/// which will allow it to take it's size from the size of the grid area it occupies.
|
|
fn item_rect(builder: &mut ChildBuilder, color: Color) {
|
|
builder
|
|
.spawn(NodeBundle {
|
|
style: Style {
|
|
display: Display::Grid,
|
|
padding: UiRect::all(Val::Px(3.0)),
|
|
..default()
|
|
},
|
|
background_color: BackgroundColor(Color::BLACK),
|
|
..default()
|
|
})
|
|
.with_children(|builder| {
|
|
builder.spawn(NodeBundle {
|
|
background_color: BackgroundColor(color),
|
|
..default()
|
|
});
|
|
});
|
|
}
|
|
|
|
fn spawn_nested_text_bundle(builder: &mut ChildBuilder, font: Handle<Font>, text: &str) {
|
|
builder.spawn(TextBundle::from_section(
|
|
text,
|
|
TextStyle {
|
|
font,
|
|
font_size: 24.0,
|
|
color: Color::BLACK,
|
|
},
|
|
));
|
|
}
|