vue-css-donut-chart

vue-css-donut-chart

Lightweight Vue component for drawing pure CSS donut charts

Live demo

Live demo can be found on the project page – https://dumptyd.github.io/vue-css-donut-chart

Playground – https://jsfiddle.net/dumptyd/ujvypcd3/

Features

:black_medium_small_square: No external dependencies.

:black_medium_small_square: Small size footprint.

:black_medium_small_square: High test coverage.

:black_medium_small_square: Performs automatic font size recalculation as the size of the donut changes.

:black_medium_small_square: Supports responsive donut and pie charts.

Table of Contents

• Installation and component registration
• Usage
  • Basic usage
  • Usage with all the available props
  • Using the component as a pie chart
• API
  • Props
  • Events
  • Slots
• Contributing
• License

Installation

Install via yarn or npm

yarn add vue-css-donut-chart

OR

npm install vue-css-donut-chart

Registering vue-css-donut-chart

:black_medium_small_square: ES6

import Donut from 'vue-css-donut-chart';
import 'vue-css-donut-chart/dist/vcdonut.css';

Vue.use(Donut);

:black_medium_small_square: In-browser using CDNs

Using unpkg

<link rel="stylesheet" href="https://unpkg.com/vue-css-donut-chart@1/dist/vcdonut.css">
<script src="https://unpkg.com/vue-css-donut-chart@1"></script>
<script>
  Vue.use(vcdonut.default);
</script>

Using jsDelivr

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/vue-css-donut-chart@1/dist/vcdonut.css">
<script src="https://cdn.jsdelivr.net/npm/vue-css-donut-chart@1/dist/vcdonut.umd.min.js"></script>
<script>
  Vue.use(vcdonut.default);
</script>

Usage

Basic usage

With sane defaults in place, basic usage is as simple as passing a sections array with objects containing a value property. This will create a donut with 2 sections that take up 25% each.

<template>
  <vc-donut :sections="sections">Basic donut</vc-donut>
</template>
<script>
  export default {
    data() {
      return {
        sections: [{ value: 25 }, { value: 25 }]
      };
    }
  };
</script>

Usage with all the available props

<template>
  <vc-donut
    background="white" foreground="grey"
    :size="200" unit="px" :thickness="30"
    has-legend legend-placement="top"
    :sections="sections" :total="100"
    :start-angle="0"
    @section-click="handleSectionClick"
  >
    <h1>75%</h1>
  </vc-donut>
</template>
<script>
  export default {
    data() {
      return {
        sections: [
          { label: 'Red section', value: 25, color: 'red' },
          { label: 'Green section', value: 25, color: 'green' },
          { label: 'Blue section', value: 25, color: 'blue' }
        ]
      };
    },
    methods: {
      handleSectionClick(section) {
        console.log(`${section.label} clicked.`);
      }
    }
  };
</script>

Using the component as a pie chart

Making the component look like a pie chart is as simple as setting the thickness to 100.

<template>
  <vc-donut
    :sections="[{ value: 35 }, { value: 15 }, { value: 15 }, { value: 35 }]"
    :thickness="100">
  </vc-donut>
</template>

Note: setting thickness to 100 will completely hide the diagram's text or slot content. The content will still be present in the DOM, however it won't be visible for obvious reasons.

API

Props

Prop	Type	Required	Default	Description
size	Number	No	250	Diameter of the donut. Can be any positive value.
unit	String	No	'px'	Unit to use for size. Can be any valid CSS unit. Use % to make the donut responsive.
thickness	Number	No	20	Percent thickness of the donut ring relative to size. Can be any positive value between 0-100 (inclusive). Set this to 0 to draw a pie chart instead.
text	String	No	–	Text to show in the middle of the donut. This can also be provided through the default slot.
background	String	No	'#ffffff'	Background color of the donut. In most cases, this should be the background color of the parent element.
foreground	String	No	'#eeeeee'	Foreground color of the donut. This is the color that is shown for empty region of the donut ring.
start-angle	Number	No	0	Angle measure in degrees where the first section should start.
total	Number	No	100	Total for calculating the percentage for each section.
has-legend	Boolean	No	false	Whether the donut should have a legend.
legend-placement	String	No	'bottom'	Where the legend should be placed. Valid values are top, right, bottom and left. Doesn't have an effect if has-legend is not true.
sections	Array	No	[]	An array of objects. Each object in the array represents a section.
section.value	Number	Yes	–	Value of the section. The component determines what percent of the donut should be taken by a section based on this value and the total prop. Sum of all the sections' value should not exceed total, an error is thrown otherwise.
section.color	String	Read description	Read description	Color of the section. The component comes with 24 predefined colors, so this property is optional if you have <= 24 sections without the color property.
section.label	String	No	'Section <section number>'	Name of the section. This is used in the legend as well as the tooltip text of the section.

Events

Event	Parameter	Description
section-click	section object	Emitted when a section is clicked. section object of the clicked section is passed as an argument. Consider adding a custom property (eg: name) to the section objects to uniquely identify them.

Slots

Slot	Description
default slot	section object
legend	Slot for plugging in your own legend.

Contributing

Issues – https://github.com/dumptyd/vue-css-donut-chart/issues

License

Code released under MIT license.