Grid-columns¶

The grid-columns style allows to define the width of the columns of the grid.

Note

This style only affects widgets with layout: grid.

Syntax¶

grid-columns: <scalar>+;

The grid-columns style takes one or more <scalar> that specify the length of the columns of the grid.

If there are more columns in the grid than scalars specified in grid-columns, they are reused cyclically. If the number of <scalar> is in excess, the excess is ignored.

Example¶

The example below shows a grid with 10 labels laid out in a grid with 2 rows and 5 columns.

We set grid-columns: 1fr 16 2fr. Because there are more rows than scalars in the style definition, the scalars will be reused:

columns 1 and 4 have width 1fr;
columns 2 and 5 have width 16; and
column 3 has width 2fr.

Outputgrid_columns.pygrid_columns.tcss

from textual.app import App
from textual.containers import Grid
from textual.widgets import Label


class MyApp(App):
    CSS_PATH = "grid_columns.tcss"

    def compose(self):
        yield Grid(
            Label("1fr"),
            Label("width = 16"),
            Label("2fr"),
            Label("1fr"),
            Label("width = 16"),
            Label("1fr"),
            Label("width = 16"),
            Label("2fr"),
            Label("1fr"),
            Label("width = 16"),
        )


if __name__ == "__main__":
    app = MyApp()
    app.run()

Grid {
    grid-size: 5 2;
    grid-columns: 1fr 16 2fr;
}

Label {
    border: round white;
    content-align-horizontal: center;
    width: 100%;
    height: 100%;
}

CSS¶

/* Set all columns to have 50% width */
grid-columns: 50%;

/* Every other column is twice as wide as the first one */
grid-columns: 1fr 2fr;

Python¶

grid.styles.grid_columns = "50%"
grid.styles.grid_columns = "1fr 2fr"