react-kinetic

KineticJS canvas library using React components.

Click on rectangles at http://freiksenet.github.io/react-kinetic/. A more elaborate example at https://github.com/freiksenet/react-kinetic-asteroids.

An attempt to make React work with the KineticJS HTML5 canvas library. The goal is to have similar declarative markup as normal React and to have similar data-flow model.

Currently you can use all Kinetic components as React components and all Kinetic events are supported on them in same way as normal browser events are supported.

You can even inspect the components in React dev tools.

Installation

If you use browserify or webpack

npm install react kinetic react-kinetic

Then just require it

require('react-kinetic');

If you use require.js or want to use it standalone, then standalone version is available in Releases.

If you want to build from source

git clone https://github.com/freiksenet/react-kinetic.git
cd react-kinetic
npm run umd

build/react-kinetic.js will be a standalone dist, you can require react and react-kinetic from there. ReactKinetic Note that in all cases you need to have react and kinetic available, so have them included in <script> tag (or available to RequireJS if you use AMD).

User guide

Minimal example:

/** @jsx React.DOM */

var React = require('react');
var ReactKinetic = require('react-kinetic');

var TestingComponent = React.createClass({
  render: function () {
    return (
      <ReactKinetic.Stage height={300} width={300}>
        <ReactKinetic.Layer>
          <ReactKinetic.Rect x={100} y={100} width={50} height={50} fill="black" />
        </ReactKinetic.Layer>
      </ReactKinetic.Stage>
    );
  }
});

React.renderComponent(
  <TestingComponent />,
  document.body
);

All react-kinetic components correspond to KineticJS components of the same name. All the parameters available for Kinetic objects are valid props for corresponding react-kinetic components, unless otherwise noted.

Every react-kinetic component (or components that use react-kinetic components) must be wrappe in Stage. Stage is the only react-kinetic element that has actual DOM representation. Unlike Kinetic.Stage, Stage will ignore container passed to it, because it constructs container by itself.

Stage's only valid children are Layer components. Layers are currently only components that handle redrawing and currently they redraw on all changes of props or children.

Layers can have all the other react-kinetic components inside. The supported elements are: Container, Layer, Group, Label, Shape, Rect, Circle, Ellipse, Ring, Wedge, Arc, Image, Text, Line, Sprite, Path, TextPath, RegularPolygon, Star and Tag. See KineticJS API docs for valid props.

Currently there is no API to add react-kinetic components for custom KineticJS nodes, but I'm planning to add it in the future. See KineticComponent.js and KineticFactory.js.

Events

react-kinetic supports all KineticJS events. The names are done 'react-style', so onCamelCased. Full mapping:

var KineticEvents = {
  onMouseOver: "mouseover",
  onMouseOut: "mouseout",
  onMouseEnter: "mouseenter",
  onMouseLeave: "mouseleave",
  onMouseMove: "mousemove",
  onMouseDown: "mousedown",
  onMouseUp: "mouseup",
  onClick: "click",
  onDblClick: "dblclick",
  onDragStar: "dragstart",
  onDragEnd: "dragend",
  onTouchStart: "touchstart",
  onTouchMove: "touchmove",
  onTouchEnd: "touchend",
  onTap: "tap",
  onDblTap: "dbltap",
  onDragMove: "dragmove"
};

Events work in similar way as they work in normal React. See demo/rectangles.js for examples.

Internally, events use the .react namespace for Kinetic events, so this namespace shouldn't be used if you manually bind events, e.g. in componentDidMount.

Some internals

To get raw Kinetic node object, use the getKineticNode method which all react-kinetic components have.