nuke-biz-custom-chart/lib/Chart.js

custom-chart

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _rax = require('rax');

var _weexNuke = require('weex-nuke');

var _g2Mobile = require('@ali/g2-mobile');

var _g2Mobile2 = _interopRequireDefault(_g2Mobile);

var _raxCanvas = require('./rax-canvas');

var _raxCanvas2 = _interopRequireDefault(_raxCanvas);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

var isWeex = _weexNuke.Env.isWeex,
    isWeb = _weexNuke.Env.isWeb;


if (isWeb) {
  _g2Mobile2.default.Global.pixelRatio = 2;
}

var Chart = function (_Component) {
  _inherits(Chart, _Component);

  function Chart(props) {
    _classCallCheck(this, Chart);

    var _this = _possibleConstructorReturn(this, (Chart.__proto__ || Object.getPrototypeOf(Chart)).call(this, props));

    _this.margin = 'margin' in props ? props.margin : 20;
    _this.setRef = _this.setRef.bind(_this);
    return _this;
  }

  _createClass(Chart, [{
    key: 'componentDidMount',
    value: function componentDidMount() {
      var _this2 = this;

      this.chartInstance.getContext().then(function (context) {
        // 存储好ctx，不用再init一个canvas画布了
        _this2.ctx = context;

        _this2.draw(context);
      });
    }
  }, {
    key: 'componentWillReceiveProps',
    value: function componentWillReceiveProps(nextProps) {
      var _this3 = this;

      if (isWeex) {
        if (!this.ctx || !this.ctx.clearRect) {
          return;
        }
        var data = nextProps.data,
            config = nextProps.config,
            style = nextProps.style;

        var el = (0, _rax.findDOMNode)(this.chartInstance);

        // 擦掉画布
        this.ctx.clearRect(0, 0, style.width, style.height);

        this.chart = new _g2Mobile2.default.Chart({
          el: el,
          context: this.ctx,
          margin: isWeex ? 2 * this.margin : this.margin
        });

        this.chart.source(data, config);
        this.chart.axis(false);

        this.renderChildren(this.ctx);
      } else {
        // web就这么写吧，不管了
        this.chartInstance.getContext().then(function (context) {
          _this3.draw(context);
        });
      }
    }
  }, {
    key: 'shouldComponentUpdate',
    value: function shouldComponentUpdate() {
      return false;
    }
  }, {
    key: 'setRef',
    value: function setRef(ref) {
      this.chartInstance = ref;
    }
  }, {
    key: 'draw',
    value: function draw(context) {
      var _props = this.props,
          children = _props.children,
          data = _props.data,
          config = _props.config;

      var el = (0, _rax.findDOMNode)(this.chartInstance);

      if (!children) {
        return;
      }

      // context.render();
      this.chart = new _g2Mobile2.default.Chart({
        el: el,
        context: context,
        margin: isWeex ? 2 * this.margin : this.margin
      });
      this.chart.source(data, config);
      this.chart.axis(false);

      this.renderChildren(context);
    }
  }, {
    key: 'renderChildren',
    value: function renderChildren() {
      var _this4 = this;

      var children = this.props.children;


      if (children && !Array.isArray(children)) {
        children = [children];
      }

      children.forEach(function (item) {
        if (item.type && item.type.draw) {
          item.type.draw(_this4.chart, item.props);
        }
      });

      this.chart.render();
    }
  }, {
    key: 'render',
    value: function render() {
      var style = this.props.style;

      var chartStyle = _extends({}, style);

      // weex canvas must have backgroundColor
      if (isWeex && !chartStyle.backgroundColor) {
        chartStyle.backgroundColor = 'transparent';
      }

      return (0, _rax.createElement)(_raxCanvas2.default, { style: chartStyle, ref: this.setRef });
    }
  }]);

  return Chart;
}(_rax.Component);

exports.default = Chart;
module.exports = exports['default'];