ccf_gpui_widgets/utils/
mod.rs

1//! Utility modules
2
3pub mod color;
4pub mod path;
5
6pub use color::{Rgb, Rgba, Hsl, Hsv, named_color_to_rgb, parse_color, parse_color_alpha};
7pub use color::{luminance, is_dark, lighten, darken, mix};
8pub use path::{parse_path, expand_tilde, PathInfo};
9
10/// Format a floating-point value for display with optional precision
11///
12/// If `precision` is `Some(p)`, rounds to `p` decimal places.
13/// Otherwise, shows integer format for whole numbers, or trims trailing zeros.
14pub fn format_display_value(value: f64, precision: Option<usize>) -> String {
15    match precision {
16        Some(p) => {
17            let multiplier = 10_f64.powi(p as i32);
18            let rounded = (value * multiplier).round() / multiplier;
19            format!("{:.prec$}", rounded, prec = p)
20        }
21        None => {
22            if value.fract() == 0.0 {
23                format!("{:.0}", value)
24            } else {
25                format!("{}", value)
26                    .trim_end_matches('0')
27                    .trim_end_matches('.')
28                    .to_string()
29            }
30        }
31    }
32}
33
34#[cfg(test)]
35mod tests {
36    use super::*;
37
38    #[test]
39    fn test_format_display_value_with_precision() {
40        assert_eq!(format_display_value(1.23456, Some(2)), "1.23");
41        assert_eq!(format_display_value(1.23956, Some(2)), "1.24");
42        assert_eq!(format_display_value(5.0, Some(2)), "5.00");
43        assert_eq!(format_display_value(0.1, Some(3)), "0.100");
44    }
45
46    #[test]
47    fn test_format_display_value_without_precision() {
48        assert_eq!(format_display_value(42.0, None), "42");
49        assert_eq!(format_display_value(1.23, None), "1.23");
50        assert_eq!(format_display_value(3.10, None), "3.1");
51        assert_eq!(format_display_value(3.100, None), "3.1");
52        assert_eq!(format_display_value(0.5, None), "0.5");
53    }
54}
ccf_gpui_widgets/utils/mod.rs

ccf_gpui_widgets/utils/
mod.rs
