@jimka/typescript-ui

Appearance

SpinButton ​

SpinButton is a small up- or down-arrow Button used inside a NumberSpinner. It inherits the standard pressed-state appearance and click handling, then adds a hold-repeat gesture: pressing and holding fires tick events at an accelerating cadence.

You usually use this indirectly via NumberSpinner. Reach for SpinButton directly only when you're building your own spinner-style control.

Usage ​

typescript
import { SpinButton } from '@jimka/typescript-ui/component/input';
const upButton = SpinButton('up');
upButton.addTickListener(() => increment());

panel.addComponent(upButton);

Hold-repeat cadence ​

When held, ticks fire at:

  • Initial delay: 400 ms
  • Multiplier: each subsequent interval = previous × 0.75
  • Floor: 40 ms (the cadence cannot accelerate beyond this)

This produces a quick ramp-up that feels responsive without runaway speed.

Common methods ​

MethodPurpose
addTickListener(fn)Subscribe to repeat ticks (also fires once on initial click).
removeTickListener(fn)Unsubscribe.

See also ​