ShadThemeData(
  breakpoints: ShadBreakpoints(
    tn: 0,    // tiny
    sm: 640,  // small
    md: 768,  // medium
    lg: 1024, // large
    xl: 1280, // extra large
    xxl: 1536, // extra extra large
  ),
);

Current breakpoint

With ShadResponsiveBuilder:

ShadResponsiveBuilder(
  builder: (context, breakpoint) {
    final sm = breakpoint >= ShadTheme.of(context).breakpoints.sm;
    // ...
  },
),

With context (equivalent):

final sm = context.breakpoint >= ShadTheme.of(context).breakpoints.sm;

Use >= so that e.g. "sm" applies to small and larger viewports (Tailwind-style). Use == only when you need to match a single breakpoint.

Sealed class switch

The breakpoint is a sealed type; you can switch on it:

ShadResponsiveBuilder(
  builder: (context, breakpoint) {
    return switch (breakpoint) {
      ShadBreakpointTN() => const Text('Tiny'),
      ShadBreakpointSM() => const Text('Small'),
      ShadBreakpointMD() => const Text('Medium'),
      ShadBreakpointLG() => const Text('Large'),
      ShadBreakpointXL() => const Text('Extra Large'),
      ShadBreakpointXXL() => const Text('Extra Extra Large'),
    };
  },
),

shadcn_ui-responsive

Shadcn UI — Responsive

Instructions

Default breakpoints