peterhry / CircleType

A JavaScript library that lets you curve type on the web.

CircleType

A JavaScript library that lets you curve type on the web.

Demo: https://circletype.labwire.ca

Installation

In a browser:

<script src="circletype.min.js"></script>

Using CDN:

<script src="https://cdn.jsdelivr.net/gh/peterhry/CircleType@2.3.1/dist/circletype.min.js"></script>

Using npm:

$ npm i circletype --save

Load ES module:

import CircleType from `circletype`;

API

CircleType

A CircleType instance creates a circular text element.

Kind: global class

• CircleType
  • new CircleType(elem, [splitter])
  • .radius(value) ⇒ CircleType
  • .radius() ⇒ number
  • .dir(value) ⇒ CircleType
  • .dir() ⇒ number
  • .forceWidth(value) ⇒ CircleType
  • .forceWidth() ⇒ boolean
  • .forceHeight(value) ⇒ CircleType
  • .forceHeight() ⇒ boolean
  • .refresh() ⇒ CircleType
  • .destroy() ⇒ CircleType

new CircleType(elem, [splitter])

Param	Type	Description
elem	HTMLElement	A target HTML element.
[splitter]	function	An optional function used to split the element's text content into individual characters

Example

// Instantiate `CircleType` with an HTML element.
const circleType = new CircleType(document.getElementById('myElement'));

// Set the text radius and direction. Note: setter methods are chainable.
circleType.radius(200).dir(-1);

// Provide your own splitter function to handle emojis
// @see https://github.com/orling/grapheme-splitter
const splitter = new GraphemeSplitter()
new CircleType(
  document.getElementById('myElement'),
  splitter.splitGraphemes.bind(splitter)
);

circleType.radius(value) ⇒ CircleType

Sets the desired text radius. The minimum radius is the radius required for the text to form a complete circle. If value is less than the minimum radius, the minimum radius is used.

Kind: instance method of CircleType
Returns: CircleType - The current instance.

Param	Type	Description
value	number	A new text radius in pixels.

Example

const circleType = new CircleType(document.getElementById('myElement'));

// Set the radius to 150 pixels.
circleType.radius(150);

circleType.radius() ⇒ number

Gets the text radius in pixels. The default radius is the radius required for the text to form a complete circle.

Kind: instance method of CircleType
Returns: number - The current text radius.
Example

const circleType = new CircleType(document.getElementById('myElement'));

circleType.radius();
//=> 150

circleType.dir(value) ⇒ CircleType

Sets the text direction. 1 is clockwise, -1 is counter-clockwise.

Kind: instance method of CircleType
Returns: CircleType - The current instance.

Param	Type	Description
value	number	A new text direction.

Example

const circleType = new CircleType(document.getElementById('myElement'));

// Set the direction to counter-clockwise.
circleType.dir(-1);

// Set the direction to clockwise.
circleType.dir(1);

circleType.dir() ⇒ number

Gets the text direction. 1 is clockwise, -1 is counter-clockwise.

Kind: instance method of CircleType
Returns: number - The current text radius.
Example

const circleType = new CircleType(document.getElementById('myElement'));

circleType.dir();
//=> 1 (clockwise)

circleType.forceWidth(value) ⇒ CircleType

Sets the forceWidth option. If true the width of the arc is calculated and applied to the element as an inline style.

Kind: instance method of CircleType
Returns: CircleType - The current instance.

Param	Type	Description
value	boolean	true if the width should be set

Example

const circleType = new CircleType(document.getElementById('myElement'));

circleType.radius(384);

console.log(circleType.container);
//=> <div style="position: relative; height: 3.18275em;">...</div>

// Enable the force width option
circleType.forceWidth(true);

console.log(circleType.container);
//=> <div style="position: relative; height: 3.18275em; width: 12.7473em;">...</div>

circleType.forceWidth() ⇒ boolean

Gets the forceWidth option. If true the width of the arc is calculated and applied to the element as an inline style. Defaults to false.

Kind: instance method of CircleType
Returns: boolean - The current forceWidth value
Example

const circleType = new CircleType(document.getElementById('myElement'));

circleType.forceWidth();
//=> false

circleType.forceHeight(value) ⇒ CircleType

Sets the forceHeight option. If true the height of the arc is calculated and applied to the element as an inline style.

Kind: instance method of CircleType
Returns: CircleType - The current instance.

Param	Type	Description
value	boolean	true if the height should be set

Example

const circleType = new CircleType(document.getElementById('myElement'));

circleType.radius(384);

console.log(circleType.container);
//=> <div style="position: relative; height: 3.18275em;">...</div>

// Disable the force height option
circleType.forceHeight(false);

console.log(circleType.container);
//=> <div style="position: relative;">...</div>

circleType.forceHeight() ⇒ boolean

Gets the forceHeight option. If true the height of the arc is calculated and applied to the element as an inline style. Defaults to true.

Kind: instance method of CircleType
Returns: boolean - The current forceHeight value
Example

const circleType = new CircleType(document.getElementById('myElement'));

circleType.forceHeight();
//=> true

circleType.refresh() ⇒ CircleType

Schedules a task to recalculate the height of the element. This should be called if the font size is ever changed.

Kind: instance method of CircleType
Returns: CircleType - The current instance.
Example

const circleType = new CircleType(document.getElementById('myElement'));

circleType.refresh();

circleType.destroy() ⇒ CircleType

Removes the CircleType effect from the element, restoring it to its original state.

Kind: instance method of CircleType
Returns: CircleType - This instance.
Example

const circleType = new CircleType(document.getElementById('myElement'));

// Restore `myElement` to its original state.
circleType.destroy();

Development Commands

Command	Description
npm run dev	Start dev server
npm start	Build for release
npm test	Run unit and screenshot tests
npm run docs	Generate documentation
npm run reference	Generate reference screenshots