Function axis_value_color

crates/plotlars-plotters/src/render/axis.rs:15–19

Resolve an axis's value-label color, defaulting to black when unset. Centralizes the `axis.as_ref().and_then(|a| a.value_color.as_ref()).map(convert_rgb).unwrap_or(BLACK)` chain that otherwise repeats across every renderer.

(axis: Option<&Axis>)

/// Centralizes the `axis.as_ref().and_then(|a| a.value_color.as_ref()).map(convert_rgb).unwrap_or(BLACK)`
/// chain that otherwise repeats across every renderer.
pub(super) fn axis_value_color(axis: Option<&Axis>) -> RGBColor {
    axis.and_then(|a| a.value_color.as_ref())
        .map(convert_rgb)
        .unwrap_or(BLACK)
}

pub(super) fn configure_label_areas(
    builder: &mut ChartBuilder<'_, '_, impl DrawingBackend>,