svelte-progressbar

A multi-series SVG progress bar component made with Svelte 3. It can be rendered both as a linear or radial progressbar. Progression bars and values are fully animated.

If rendered as a linear progressbar there are 2 styles supported:

• Standard: uses svg masks to display inverted text color for the value.
• Thin: the progression bars are rendered as thin bars and the values are placed externally

No dependencies, only 20kb when minified (6.5kb gzipped)!

Usage

From npm

npm i @okrad/svelte-progressbar

Using in a standard npm module

import ProgressBar from '@okrad/svelte-progressbar';

const pb = new ProgressBar({
        target: document.getElementById('demo'),
        props: {
                series: 20
        }
});

Using in a Svelte app

//main.js
import App from './App.svelte';

const app = new App({
        target: document.body,
        props: {
                series: [20, 42]
        }
});

export default app;

//App.svelte
<script>
  import ProgressBar from "@okrad/svelte-progressbar";

  export let series = [];

  let bar;

  const updateBar = values => {
        values.forEach((v, i) => bar.updatePerc(v, i));
  };

  const resetBar = () => updateBar([0, 0]);

</script>

<ProgressBar {series} bind:this={bar} />

<button on:click={() => updateBar([100, 100])}>update</button>
<button on:click={resetBar}>reset</button>

Building from source

npm run build

Creates unminified index.js and index.css files.

Or...

npm run dist

Creates minified index.js and index.css files.

Either way, include index.js/index.css in your html file, then instantiate the component:

const pb = new ProgressBar({
        target: document.getElementById('demo'),
        props: {
                series: 20
        }
});

This creates a standard progressbar with 20% progression.

const pb = new ProgressBar({
        target: document.getElementById('demo'),
        style: 'radial',
        props: {
                series: [20, 10]
        }
});

This creates a radial progressbar with 2 series (20% + 10%).

Take a look at some working examples!

API

ProgressBar(options): The constructor. Available props are:

• series (number | object | array): for single series progressbars, it can be a number indicating the progression percentage (0-100), or a json object with "perc" and "color" properties. For example:

series: 42

series: [10, 32]

series: [
        {
                perc: 10,
                color: '#5AB6DF'
        },
        {
                perc: 32,
                color: '#65CEA7'
        }
]

• style: can be "standard" (default), "thin" or "radial"
• width: determines the width of the whole component
• height: determines the height of the svg viewbox. If not specified, it defaults to the 14% of the viewbox width for standard progressbars, 1% of the viewbox width for thin progressbars, and to the 100% of the viewbox width for radial ones.
• thickness: used only for radial progress bars. It determines the thickness of the bar as a unitless number between 0 and 50 (corresponding to the ray of the circle).
• textSize: the size of the font (in percentage) for the progression value (default: 30 for thin progressbars, 70 for default progressbar, 150 for radial)

updatePerc(perc, seriesId = 0): update the specified series progress percentage

Changelog

2019/08/07: Added dist task

2019/08/06: Refactored thin progressbars

2019/08/02: Added textSize parameter

2019/08/01: Handled svg viewport (width/height) while keeping proportions