@slipmatio/control-knob

Vue Control Knob

Fully customizable rotary control knob component for Vue 3 that behaves like native audio app controls in Logic Pro or Ableton Live. Component is rendered as an ARIA-friendly SVG element.

Features:

• Supports keyboard, mouse & wheel control
• Changes input only with vertical mouse movement
• Precice mode using shift + movement
• Reset to default with Option-click (alt-click)
• Zero dependencies (apart from Vue 3)
• Fully configurable and Tailwind CSS -friendly styles
• Witten in TypeScript, ships with typings

Installation

1. Install @slipmatio/control-knob package from npm
2. Import Vue component to your project: import ControlKnob from '@slipmatio/control-knob'
3. Configure v-model and options

Configuration

All configuration options are optional. The options referencing inner coordinate positions are based on 100x100 coordinate system that is not affected by the imageSize.

Option	Default	Description
imageSize	40	Rendered SVG width and lenght in pixels.
minValue	0	Minimum value of the knob v-model.
maxValue	100	Maximum value of the knob v-model.
showTick	true	Show visible marker of the knob position.
showValue	true	Show value label inside the knob.
hideDefaultValue	false	Hide value label if value hasn't been changed.
tickLength	18	Tick length in pixels.
tickOffset	10	Tick offset in pixels.
tickStroke	3	Tick stroke width.
rimStroke	11	Outer rim stroke width.
valueArchStroke	11	Value arch stroke width.
bgRadius	34	Radius of the background circle.
wheelFactor	10	Modifier to factor any mousewheel ticks.
keyFactor	10	Modifier to factor any arrow-key presses.
tabIndex	0	Tabindex for the HTML element.
ariaLabel	'Knob'	ARIA label for the HTML element.
valueTextX	50	X-position of the value text label.
valueTextY	62	Y-position of the value text label.
svgClass	'select-none'	CSS class for the SVG element.
bgClass	'text-[#868686]'	CSS class for the background circle.
rimClass	'text-[#393939]'	CSS class for the outer rim.
valueArchClass	'text-[#53d769]'	CSS class for the value arch.
tickClass	'text-black'	CSS class for the tick line.
valueTextClass	'text-gray-50 text-[30px] font-normal font-mono'	CSS class for the value text.
passiveEvents	false	When set, propagation of handeled events is not prevented.

Note that if you're using Tailwind CSS with automatic purge, you'll probably want to add the default classes as options so PurgeCSS catches them (or you can just whitelist them):

Default Tailwind CSS classes:

const options = {
  svgClass: 'select-none',
  bgClass: 'text-[#868686]',
  rimClass: 'text-[#393939]',
  valueArchClass: 'text-[#53d769]',
  tickClass: 'text-black',
  valueTextClass: 'text-gray-50 text-[30px] font-normal font-mono',
}

Development

Install dependencies

pnpm i

Run development server

pnpm dev

Run tests

pnpm test

Contributing

Contributions are welcome! Please follow the code of conduct when interacting with others.

Elsewhere

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