cycle-svg-pan-and-zoom

cycle-svg-pan-and-zoom

A Google Maps style SVG pan and zoom component for Cycle.js

cycle-svg-pan-and-zoom is a component for Cycle.js that allows you to pan by clicking and dragging, and to zoom with the mouse.

Currently xstream only, although a pull-request to support other stream libraries is welcome.

Usage

First we need to import the component:

import SvgPanAndZoom from 'cycle-svg-pan-and-zoom';

We also need the h hyperscript helper from @cycle/dom to make SVG elements.

import {h} from '@cycle/dom';

Then, inside of our main, we set up our SVG:

function main ({DOM}) {
  const children$ = xs.of([
    h('text', {attrs: {x: 100, y: 100}}, 'hello world')
  ]);

  const svg = SvgPanAndZoom({DOM, children$});

  return {
    DOM: svg.DOM
  }
}

API

SvgPanAndZoom({DOM, children$, attrs$})

Returns a sinks object with a DOM stream, where the top level element is the svg.

• DOM (required) - the @cycle/dom source
• children$ (required) - a stream, where each item is an array of hyperscript SVG elements
• attrs$ (optional) - a stream of objects that will be used as attrs for the svg element. useful for setting width and height

Install

With npm installed, run

$ npm install cycle-svg-pan-and-zoom --save

Contributing

Contributions are extremely welcome. Please feel free to open an issue or pull request, or to ask any questions.

License

MIT