Progress bars

[Bauxitedev]

Quick question, does egui contain any kind of functionality to draw a progress bar? I haven't been able to find any.

Ideally it would be kinda similar to this imgui progress bar: ocornut/imgui#1901

[EmbersArc]

@emilk If you agree that this would be a good feature to have, I could implement one. Let me know if you have any ideas how to style it.

[sourcebox]

A progress bar would be really nice to have, I was recently looking for one in the demo app to include it in my latest project.

[Bauxitedev]

Here's my temporary workaround if you want a progress bar right now. Replace progress with your own progress value from 0 to 1, and progress_bar_len with the width of the progress bar in characters.

let progress_bar_len = 18;
let progress = 0.5;
ui.label(format!(
    "{}",
    (0..progress_bar_len)
        .map(|i| {
            let percent = i as f32 / progress_bar_len as f32;
            if percent < progress {
                '◼'
            } else {
                '◻'
            }
        })
        .collect::<String>()
));

[sourcebox]

@Bauxitedev Thanks, that look good already. I don't need it right now, maybe in about 2 weeks.

[emilk]

A progress bar would be nice yes, ideally with an optional text attached to it!

[EmbersArc]

I've opened a PR: #519
Let me know if you have suggestions on how to improve it.