A premium segmented toggle/tab bar that emphasizes state with a dashed, animated outline (the classic marching-ants effect). Each segment is a soft-rounded pill that can be filled, ghost, or outlined. On selection the capsule lifts, the dash pattern animates around the boundary, and the label/icon gains contrast. Built for real products: gesture-driven transitions, haptics, accessibility, and full theming.

Functionality

• Animated dashed stroke around the active segment (speed, dash length, gap, direction).

• Variants: Filled / Ghost / Outline, with optional icon-only or icon+label.

• Spring-based selection transitions (tap & swipe-linked), ripple/hover/pressed states, haptic feedback.

• State machine: idle, focus, hover, pressed, selected, disabled with distinct tokens.

• Badges/counters and tooltips; long-label ellipsis; equal/intrinsic widths; scrollable rails.

• Form bindings and validation (initialValue, onChanged, errorText), reselect callback.

• Theming tokens: radius, elevation/shadows, border width, palette for stroke/fill/text, background blur/gradient.

• Accessibility: ARIA radiogroup semantics, keyboard navigation (←/→, Space/Enter), screen-reader labels, RTL & Reduce-Motion support.

• High-performance rendering with layer caching; safe-area aware; dark/light modes.

Use cases

• Highlighted binary or N-way choices in onboarding and profile forms.

• Quick filters/modes (e.g., List/Grid, Monthly/Yearly, Delivery/Pickup).

• Paywall and pricing toggles that need an eye-catching active state.

• Feature flags or app modes where the selection should remain visually prominent.

• Dashboards and analytics segments that combine icons + labels + counts.

Keywords
segmented control, segmented button, capsule tabs, dashed outline, marching ants, animated border, ghost button, outline pill, icon with label, badges, haptic feedback, spring animation, hover/pressed, keyboard navigation, ARIA radiogroup, accessibility, RTL, reduce motion, theming tokens, dark mode, scrollable tabs, form field, validation, Flutter widget, FlutterFlow component, premium UI, high performance.