Make the ProgressBar have a Configurable Height

[driscollis]

When using a ProgressBar on a high resolution display, the widget is hard to see. This could be resolved by one of the following:

• Allow the developer to choose from the default size as well as a couple of other larger heights
• Allow the developer to specify the needed height for the widget

This will also be useful for users with sight issues from a readability standpoint.

[github-actions]

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[TomJGooding]

Textual v6.0.0 added ProgressBar.BAR_RENDERABLE which allows customising the bar.

Here's quick example how to create a tall progress bar:

from textual.app import App, ComposeResult
from textual.renderables.bar import Bar as BarRenderable
from textual.widgets import Label, ProgressBar


class TallBarRenderable(BarRenderable):
    HALF_BAR_LEFT = "▐"
    BAR = "█"
    HALF_BAR_RIGHT = "▌"


class TallProgressBar(ProgressBar):
    BAR_RENDERABLE = TallBarRenderable


class ExampleApp(App):
    CSS = """
    Screen { align: center middle; }
    """

    def compose(self) -> ComposeResult:
        yield Label("Default:")
        yield ProgressBar(total=100)

        yield Label("Custom bar:")
        yield TallProgressBar(total=100)

    def on_mount(self) -> None:
        self.set_interval(1 / 10, self.make_progress)

    def make_progress(self):
        for bar in self.query(ProgressBar):
            bar.advance(1)


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

[github-actions]

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• Will McGugan