∞ forever components

Inputs & Switches

Thumbwheel Scrubber

Denim-blue cylindrical thumbwheel with curved ribs you drag and fling; flywheel friction, detent ticks, and a FRAME counter readout.

canvasheavy complexitymoderate motionpointermobile-ready

Open on the canvas to copy the code → Free account · 3 copies a day · membership goes unlimited

Live demo — the real component, running in a sandbox. One self-contained HTML file, zero dependencies. Open it on the canvas →
1

When to use it

Timeline scrubbers, video frame selectors, or any UI needing tactile precision input with inertia feel.

When not to

Accessibility-first contexts — drag/fling only, no keyboard nav or ARIA roles. Reduced-motion users get a static frozen frame.

Working with an AI agent

Every component ships agent-ready metadata. An example instruction for this one:

Change the accent color from denim-blue to amber by setting ACC='#f59e0b', update the rib gradient midpoint colors to match, and slow friction from 0.975 to 0.96 for a longer coast. Theme: dark tokens live in :root, the light variant in :root[data-theme="light"]; ?theme=light or a {type:'forever:theme'} postMessage switches at runtime.

Safe to edit

  • accent color (ACC='#507E95')
  • flywheel friction (vel*=0.975)
  • rib pitch/spacing (PITCH=0.30)
  • initial velocity (vel=1.9)
  • wheel dimensions (wW, wH scale factors)
  • theme tokens (:root dark defaults + [data-theme=light] overrides)

Keep intact

  • DPR-aware canvas sizing
  • visibilitychange pause/resume
  • prefers-reduced-motion guard (static single frame)
  • IIFE wrapper
  • theme hook (?theme= bootstrap + forever:theme message listener + theme tokens)
  • demo-v1 preview lifecycle: initialize demoEnabled from window.__foreverPreview and stop attract work on the window forever:interactive event; retain manual feedback, settling, cleanup and explicit sessions

Known limitations

  • FRAME counter is a demo value, not wired to any real data source
  • Drag and arrow keys scrub the local frame value, including reduced-motion mode.
  • State remains local to each mounted instance; format/theme remount preserves takeover, not component values.

thumbwheelscrubbercylindricalphysicsflywheelcanvasui-control

More Inputs & Switches components

  • Liquid ToggleSVG liquid toggle with a goo filter, trailing droplets and a native button. First deliberate input stops the idle demo; the chosen on/off state settles fully.
  • Glow SliderSVG range slider with a muted plum-to-teal fill, glow and value bubble, driven by a native range input. First input stops demo oscillation; drag and…
  • Spring StepperMint stepper with native minus/plus buttons and a number reel that settles with spring feedback. First deliberate input stops automatic steps; the chosen…
  • Segmented ControlSlate-to-sage pill slides between four native segment buttons with elastic spring stretch. First input stops automatic cycling; committed selection remains.
  • Checkbox MorphThree native amber checkbox buttons animate their check strokes and expose pressed state. First input stops the demo; checked values remain.
  • Star RatingFive gold SVG star radio controls commit ratings on click or keyboard input and settle with a scale bounce. First input stops automatic sweeping.