Struct bevy::prelude::GridTrack

source · 
pub struct GridTrack { /* private fields */ }
Expand description

A GridTrack is a Row or Column of a CSS Grid. This struct specifies what size the track should be. See below for the different “track sizing functions” you can specify.

Implementations§

source§

impl GridTrack

source

pub const DEFAULT: GridTrack = _

source

pub fn px<T>(value: f32) -> T
where T: From<GridTrack>,

Create a grid track with a fixed pixel size

Examples found in repository?
examples/ui/grid.rs (line 42)
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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()
            });
        });
}
source

pub fn percent<T>(value: f32) -> T
where T: From<GridTrack>,

Create a grid track with a percentage size

source

pub fn fr<T>(value: f32) -> T
where T: From<GridTrack>,

Create a grid track with an fr size. Note that this will give the track a content-based minimum size. Usually you are best off using GridTrack::flex instead which uses a zero minimum size.

Examples found in repository?
examples/ui/grid.rs (line 133)
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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()
            });
        });
}
source

pub fn flex<T>(value: f32) -> T
where T: From<GridTrack>,

Create a grid track with a minmax(0, Nfr) size.

Examples found in repository?
examples/ui/grid.rs (line 34)
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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()
            });
        });
}
source

pub fn auto<T>() -> T
where T: From<GridTrack>,

Create a grid track which is automatically sized to fit its contents.

Examples found in repository?
examples/ui/grid.rs (line 40)
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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()
            });
        });
}
source

pub fn min_content<T>() -> T
where T: From<GridTrack>,

Create a grid track which is automatically sized to fit its contents when sized at their “min-content” sizes

Examples found in repository?
examples/ui/grid.rs (line 34)
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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()
            });
        });
}
source

pub fn max_content<T>() -> T
where T: From<GridTrack>,

Create a grid track which is automatically sized to fit its contents when sized at their “max-content” sizes

source

pub fn fit_content_px<T>(limit: f32) -> T
where T: From<GridTrack>,

Create a fit-content() grid track with fixed pixel limit.

https://developer.mozilla.org/en-US/docs/Web/CSS/fit-content_function

source

pub fn fit_content_percent<T>(limit: f32) -> T
where T: From<GridTrack>,

Create a fit-content() grid track with percentage limit.

https://developer.mozilla.org/en-US/docs/Web/CSS/fit-content_function

source

pub fn minmax<T>(min: MinTrackSizingFunction, max: MaxTrackSizingFunction) -> T
where T: From<GridTrack>,

Create a minmax() grid track.

https://developer.mozilla.org/en-US/docs/Web/CSS/minmax

Trait Implementations§

source§

impl Clone for GridTrack

source§

fn clone(&self) -> GridTrack

Returns a copy of the value. Read more
1.0.0 · source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
source§

impl Debug for GridTrack

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fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter. Read more
source§

impl Default for GridTrack

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fn default() -> GridTrack

Returns the “default value” for a type. Read more
source§

impl From<GridTrack> for RepeatedGridTrack

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fn from(track: GridTrack) -> RepeatedGridTrack

Converts to this type from the input type.
source§

impl From<GridTrack> for Vec<GridTrack>

source§

fn from(track: GridTrack) -> Vec<GridTrack>

Converts to this type from the input type.
source§

impl From<GridTrack> for Vec<RepeatedGridTrack>

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fn from(track: GridTrack) -> Vec<RepeatedGridTrack>

Converts to this type from the input type.
source§

impl FromReflect for GridTrack
where GridTrack: Any + Send + Sync, MinTrackSizingFunction: FromReflect + TypePath, MaxTrackSizingFunction: FromReflect + TypePath,

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fn from_reflect(reflect: &(dyn Reflect + 'static)) -> Option<GridTrack>

Constructs a concrete instance of Self from a reflected value.
source§

fn take_from_reflect( reflect: Box<dyn Reflect> ) -> Result<Self, Box<dyn Reflect>>

Attempts to downcast the given value to Self using, constructing the value using from_reflect if that fails. Read more
source§

impl GetTypeRegistration for GridTrack
where GridTrack: Any + Send + Sync, MinTrackSizingFunction: FromReflect + TypePath, MaxTrackSizingFunction: FromReflect + TypePath,

source§

fn get_type_registration() -> TypeRegistration

source§

impl PartialEq for GridTrack

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fn eq(&self, other: &GridTrack) -> bool

This method tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
source§

impl Reflect for GridTrack
where GridTrack: Any + Send + Sync, MinTrackSizingFunction: FromReflect + TypePath, MaxTrackSizingFunction: FromReflect + TypePath,

source§

fn get_represented_type_info(&self) -> Option<&'static TypeInfo>

Returns the TypeInfo of the type represented by this value. Read more
source§

fn into_any(self: Box<GridTrack>) -> Box<dyn Any>

Returns the value as a Box<dyn Any>.
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fn as_any(&self) -> &(dyn Any + 'static)

Returns the value as a &dyn Any.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Returns the value as a &mut dyn Any.
source§

fn into_reflect(self: Box<GridTrack>) -> Box<dyn Reflect>

Casts this type to a boxed reflected value.
source§

fn as_reflect(&self) -> &(dyn Reflect + 'static)

Casts this type to a reflected value.
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fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)

Casts this type to a mutable reflected value.
source§

fn clone_value(&self) -> Box<dyn Reflect>

Clones the value as a Reflect trait object. Read more
source§

fn set(&mut self, value: Box<dyn Reflect>) -> Result<(), Box<dyn Reflect>>

Performs a type-checked assignment of a reflected value to this value. Read more
source§

fn apply(&mut self, value: &(dyn Reflect + 'static))

Applies a reflected value to this value. Read more
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fn reflect_kind(&self) -> ReflectKind

Returns a zero-sized enumeration of “kinds” of type. Read more
source§

fn reflect_ref(&self) -> ReflectRef<'_>

Returns an immutable enumeration of “kinds” of type. Read more
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fn reflect_mut(&mut self) -> ReflectMut<'_>

Returns a mutable enumeration of “kinds” of type. Read more
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fn reflect_owned(self: Box<GridTrack>) -> ReflectOwned

Returns an owned enumeration of “kinds” of type. Read more
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fn reflect_partial_eq(&self, value: &(dyn Reflect + 'static)) -> Option<bool>

Returns a “partial equality” comparison result. Read more
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fn reflect_hash(&self) -> Option<u64>

Returns a hash of the value (which includes the type). Read more
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fn debug(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Debug formatter for the value. Read more
source§

fn serializable(&self) -> Option<Serializable<'_>>

Returns a serializable version of the value. Read more
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fn is_dynamic(&self) -> bool

Indicates whether or not this type is a dynamic type. Read more
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impl Struct for GridTrack
where GridTrack: Any + Send + Sync, MinTrackSizingFunction: FromReflect + TypePath, MaxTrackSizingFunction: FromReflect + TypePath,

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fn field(&self, name: &str) -> Option<&(dyn Reflect + 'static)>

Returns a reference to the value of the field named name as a &dyn Reflect.
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fn field_mut(&mut self, name: &str) -> Option<&mut (dyn Reflect + 'static)>

Returns a mutable reference to the value of the field named name as a &mut dyn Reflect.
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fn field_at(&self, index: usize) -> Option<&(dyn Reflect + 'static)>

Returns a reference to the value of the field with index index as a &dyn Reflect.
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fn field_at_mut(&mut self, index: usize) -> Option<&mut (dyn Reflect + 'static)>

Returns a mutable reference to the value of the field with index index as a &mut dyn Reflect.
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fn name_at(&self, index: usize) -> Option<&str>

Returns the name of the field with index index.
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fn field_len(&self) -> usize

Returns the number of fields in the struct.
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fn iter_fields(&self) -> FieldIter<'_> ⓘ

Returns an iterator over the values of the reflectable fields for this struct.
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fn clone_dynamic(&self) -> DynamicStruct

Clones the struct into a DynamicStruct.
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impl TypePath for GridTrack
where GridTrack: Any + Send + Sync,

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fn type_path() -> &'static str

Returns the fully qualified path of the underlying type. Read more
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fn short_type_path() -> &'static str

Returns a short, pretty-print enabled path to the type. Read more
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fn type_ident() -> Option<&'static str>

Returns the name of the type, or None if it is anonymous. Read more
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fn crate_name() -> Option<&'static str>

Returns the name of the crate the type is in, or None if it is anonymous. Read more
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fn module_path() -> Option<&'static str>

Returns the path to the module the type is in, or None if it is anonymous. Read more
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impl Typed for GridTrack
where GridTrack: Any + Send + Sync, MinTrackSizingFunction: FromReflect + TypePath, MaxTrackSizingFunction: FromReflect + TypePath,

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fn type_info() -> &'static TypeInfo

Returns the compile-time info for the underlying type.
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impl Copy for GridTrack

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impl StructuralPartialEq for GridTrack

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T, U> AsBindGroupShaderType<U> for T
where U: ShaderType, &'a T: for<'a> Into<U>,

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fn as_bind_group_shader_type(&self, _images: &RenderAssets<Image>) -> U

Return the T ShaderType for self. When used in AsBindGroup derives, it is safe to assume that all images in self exist.
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> Downcast<T> for T

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fn downcast(&self) -> &T

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impl<T> Downcast for T
where T: Any,

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fn into_any(self: Box<T>) -> Box<dyn Any>

Convert Box<dyn Trait> (where Trait: Downcast) to Box<dyn Any>. Box<dyn Any> can then be further downcast into Box<ConcreteType> where ConcreteType implements Trait.
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fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>

Convert Rc<Trait> (where Trait: Downcast) to Rc<Any>. Rc<Any> can then be further downcast into Rc<ConcreteType> where ConcreteType implements Trait.
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fn as_any(&self) -> &(dyn Any + 'static)

Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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impl<T> DowncastSync for T
where T: Any + Send + Sync,

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fn into_any_arc(self: Arc<T>) -> Arc<dyn Any + Send + Sync>

Convert Arc<Trait> (where Trait: Downcast) to Arc<Any>. Arc<Any> can then be further downcast into Arc<ConcreteType> where ConcreteType implements Trait.
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impl<T> DynamicTypePath for T
where T: TypePath,

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fn reflect_type_path(&self) -> &str

See TypePath::type_path.
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fn reflect_short_type_path(&self) -> &str

See TypePath::short_type_path.
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fn reflect_type_ident(&self) -> Option<&str>

See TypePath::type_ident.
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fn reflect_crate_name(&self) -> Option<&str>

See TypePath::crate_name.
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fn reflect_module_path(&self) -> Option<&str>

See TypePath::module_path.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<S> FromSample<S> for S

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fn from_sample_(s: S) -> S

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impl<T> FromWorld for T
where T: Default,

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fn from_world(_world: &mut World) -> T

Creates Self using data from the given World.
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impl<S> GetField for S
where S: Struct,

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fn get_field<T>(&self, name: &str) -> Option<&T>
where T: Reflect,

Returns a reference to the value of the field named name, downcast to T.
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fn get_field_mut<T>(&mut self, name: &str) -> Option<&mut T>
where T: Reflect,

Returns a mutable reference to the value of the field named name, downcast to T.
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impl<T> GetPath for T
where T: Reflect + ?Sized,

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fn reflect_path<'p>( &self, path: impl ReflectPath<'p> ) -> Result<&(dyn Reflect + 'static), ReflectPathError<'p>>

Returns a reference to the value specified by path. Read more
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fn reflect_path_mut<'p>( &mut self, path: impl ReflectPath<'p> ) -> Result<&mut (dyn Reflect + 'static), ReflectPathError<'p>>

Returns a mutable reference to the value specified by path. Read more
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fn path<'p, T>( &self, path: impl ReflectPath<'p> ) -> Result<&T, ReflectPathError<'p>>
where T: Reflect,

Returns a statically typed reference to the value specified by path. Read more
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fn path_mut<'p, T>( &mut self, path: impl ReflectPath<'p> ) -> Result<&mut T, ReflectPathError<'p>>
where T: Reflect,

Returns a statically typed mutable reference to the value specified by path. Read more
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> ToSample<U> for T
where U: FromSample<T>,

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fn to_sample_(self) -> U

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> TypeData for T
where T: 'static + Send + Sync + Clone,

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fn clone_type_data(&self) -> Box<dyn TypeData>

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impl<T> Upcast<T> for T

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fn upcast(&self) -> Option<&T>

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<S, T> Duplex<S> for T
where T: FromSample<S> + ToSample<S>,

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impl<T> Settings for T
where T: 'static + Send + Sync,

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impl<T> WasmNotSend for T
where T: Send,

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impl<T> WasmNotSendSync for T
where T: WasmNotSend + WasmNotSync,

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impl<T> WasmNotSync for T
where T: Sync,