egui-charts 0.2.0

High-performance financial charting engine for egui — candlesticks, 95 drawing tools, 130+ indicators, and a full design-token theme system
Documentation 
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//! Focus Ring Indicators
//!
//! Provides visible focus indicators for keyboard navigation accessibility.
//! Focus rings appear when UI elements receive keyboard focus.

use egui::{Color32, Response, Stroke, Ui, epaint::StrokeKind};

use crate::tokens::DESIGN_TOKENS;

/// Get the focus ring color from the theme accent
pub fn focus_ring_color(ui: &Ui) -> Color32 {
    // Use the selection color from egui visuals (theme-aware)
    let sel = ui.style().visuals.selection.bg_fill;
    Color32::from_rgba_unmultiplied(sel.r(), sel.g(), sel.b(), 180)
}

/// Draw a focus ring around a response if it has keyboard focus.
///
/// Call this after creating a response to add an accessible focus indicator.
pub fn draw_focus_ring(ui: &Ui, response: &Response) {
    if response.has_focus() {
        let ring_color = focus_ring_color(ui);
        ui.painter().rect_stroke(
            response.rect.expand(DESIGN_TOKENS.spacing.xs),
            DESIGN_TOKENS.rounding.sm,
            Stroke::new(DESIGN_TOKENS.stroke.thick, ring_color),
            StrokeKind::Outside,
        );
    }
}