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Layers

The layers style allows you to define an ordered set of layers.

Syntax

layers: <name>+;

The layers style accepts one or more <name> that define the layers that the widget is aware of, and the order in which they will be painted on the screen.

The values used here can later be referenced using the layer property. The layers defined first in the list are drawn under the layers that are defined later in the list.

More information on layers can be found in the guide.

Example

In the example below, #box1 is yielded before #box2. However, since #box1 is on the higher layer, it is drawn on top of #box2.

LayersExample box1 (layer = above) box2 (layer = below) 

from textual.app import App, ComposeResult
from textual.widgets import Static


class LayersExample(App):
    CSS_PATH = "layers.tcss"

    def compose(self) -> ComposeResult:
        yield Static("box1 (layer = above)", id="box1")
        yield Static("box2 (layer = below)", id="box2")


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

Screen {
    align: center middle;
    layers: below above;
}

Static {
    width: 28;
    height: 8;
    color: auto;
    content-align: center middle;
}

#box1 {
    layer: above;
    background: darkcyan;
}

#box2 {
    layer: below;
    background: orange;
    offset: 12 6;
}

CSS

/* Bottom layer is called 'below', layer above it is called 'above' */
layers: below above;

Python

# Bottom layer is called 'below', layer above it is called 'above'
widget.style.layers = ("below", "above")

See also