opa_rfsFluid responsive sizing for Flutter

Scale typography, spacing, radii, shadows, and complete text themes smoothly between intentional endpoints.

Smooth, bounded scaling

Values interpolate continuously between a deliberate minimum and maximum instead of jumping at visual breakpoints.

Use the same curve for text, spacing, dimensions, radii, offsets, constraints, and shadows.

Runtime logical-pixel calculations, local layout constraints, inherited configuration, and no code generation.

opa_rfs chooses the responsive base font size while Flutter's ambient TextScaler remains in control.

dart

Text(
  'Fluid headline',
  style: TextStyle(
    fontSize: Rfs.contextValue(context, 64, min: 36),
  ),
)

At wide layouts the headline reaches 64. As space narrows, it eases toward 36 and never overshoots either endpoint.

Use the getting-started guide for installation, visit the interactive playground to see the curve change live, or jump straight to the generated API reference.