#Redline.js#

Highly flexible JavaScript-driven html gauge.

Live Demo

##Features##

• Lightweight
• Fully customizable via CSS
• Custom marks & aperture
• Compatible with jQuery

##Usage##

First add some style by hooking up redline.css. You can build your own theme by compiling src/scss/redline.scss with custom variables. You can also override basic style via CSS as the demo (demo/style.css) shows.

###JavaScript###

There are two ways of using Redline.js in a browser: with jQuery or without.

###Using jQuery###

Just point jQuery to your .gauge container and spice with some options.

$( '#gauge' ).redline( options );

When gauge is initialized, you can move it's arrow with point method:

$( '#gauge' ).redline( 'point', 5 );

This method takes new arrow position as an argument. Arrow position is an index of the mark it points to. If it's fractional, arrow will point between two marks.

###Without jQuery###

Redline can also be used as a class. All methods are the same, the only difference is how you call them:

var gauge = new Redline( options );

gauge.point( 5 );

// or

gauge.set( 'position', 5 );

###Options###

You can initialize Redline with a set of options.

var options = {
    aperture    : 240, // gauge's aperture in degrees
    marks       : [{ caption: '0', type: 'srart' }, 1, 2, 'stop'], // array of custom marks
    innerMarks  : true, // if true — marks are kept inside the gauge
    position    : 0 // default gauge position
}

$( '#gauge' ).redline( options );

##Custimization##

Redline.js gauge can be custimized entirely via CSS. Threre's also a possibility to customize each segment separately. To do so, just specify a type for a segment in options.marks array like this:

// ~~~
    marks: [
        { caption: 'R', type: 'red' },
        { caption: 'A', type: 'orange' },
        { caption: 'I', type: 'yellow' },
        { caption: 'N', type: 'green' },
        { caption: 'B', type: 'blue' },
        { caption: 'O', type: 'indigo' },
        { caption: 'W', type: 'violet' }
    ]
// ~~~

Type will be attached to a segment element as a class: .redline-dial-segment-*type* so you can specify custom styles for it's color, font, mark size etc.

There are also two default classes: .redline-dial-segment-warning and .redline-dial-segment-danger that are attached to penultimate and last segment respectively, but can be overrided in options.

You can found an example of fully customized gauge in demo/.

##Installation##

You can install Redline.js via npm:

npm install redline

Or bower

bower install redline