react-color/es/components/common/Alpha.js

A Collection of Color Pickers from Sketch, Photoshop, Chrome & more

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; }; }();

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; }

import React, { Component, PureComponent } from 'react';
import reactCSS from 'reactcss';
import * as alpha from '../../helpers/alpha';

import Checkboard from './Checkboard';

export var Alpha = function (_ref) {
  _inherits(Alpha, _ref);

  function Alpha() {
    var _ref2;

    var _temp, _this, _ret;

    _classCallCheck(this, Alpha);

    for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    return _ret = (_temp = (_this = _possibleConstructorReturn(this, (_ref2 = Alpha.__proto__ || Object.getPrototypeOf(Alpha)).call.apply(_ref2, [this].concat(args))), _this), _this.handleChange = function (e) {
      var change = alpha.calculateChange(e, _this.props.hsl, _this.props.direction, _this.props.a, _this.container);
      change && typeof _this.props.onChange === 'function' && _this.props.onChange(change, e);
    }, _this.handleMouseDown = function (e) {
      _this.handleChange(e);
      window.addEventListener('mousemove', _this.handleChange);
      window.addEventListener('mouseup', _this.handleMouseUp);
    }, _this.handleMouseUp = function () {
      _this.unbindEventListeners();
    }, _this.unbindEventListeners = function () {
      window.removeEventListener('mousemove', _this.handleChange);
      window.removeEventListener('mouseup', _this.handleMouseUp);
    }, _temp), _possibleConstructorReturn(_this, _ret);
  }

  _createClass(Alpha, [{
    key: 'componentWillUnmount',
    value: function componentWillUnmount() {
      this.unbindEventListeners();
    }
  }, {
    key: 'render',
    value: function render() {
      var _this2 = this;

      var rgb = this.props.rgb;
      var styles = reactCSS({
        'default': {
          alpha: {
            absolute: '0px 0px 0px 0px',
            borderRadius: this.props.radius
          },
          checkboard: {
            absolute: '0px 0px 0px 0px',
            overflow: 'hidden',
            borderRadius: this.props.radius
          },
          gradient: {
            absolute: '0px 0px 0px 0px',
            background: 'linear-gradient(to right, rgba(' + rgb.r + ',' + rgb.g + ',' + rgb.b + ', 0) 0%,\n           rgba(' + rgb.r + ',' + rgb.g + ',' + rgb.b + ', 1) 100%)',
            boxShadow: this.props.shadow,
            borderRadius: this.props.radius
          },
          container: {
            position: 'relative',
            height: '100%',
            margin: '0 3px'
          },
          pointer: {
            position: 'absolute',
            left: rgb.a * 100 + '%'
          },
          slider: {
            width: '4px',
            borderRadius: '1px',
            height: '8px',
            boxShadow: '0 0 2px rgba(0, 0, 0, .6)',
            background: '#fff',
            marginTop: '1px',
            transform: 'translateX(-2px)'
          }
        },
        'vertical': {
          gradient: {
            background: 'linear-gradient(to bottom, rgba(' + rgb.r + ',' + rgb.g + ',' + rgb.b + ', 0) 0%,\n           rgba(' + rgb.r + ',' + rgb.g + ',' + rgb.b + ', 1) 100%)'
          },
          pointer: {
            left: 0,
            top: rgb.a * 100 + '%'
          }
        },
        'overwrite': _extends({}, this.props.style)
      }, {
        vertical: this.props.direction === 'vertical',
        overwrite: true
      });

      return React.createElement(
        'div',
        { style: styles.alpha },
        React.createElement(
          'div',
          { style: styles.checkboard },
          React.createElement(Checkboard, { renderers: this.props.renderers })
        ),
        React.createElement('div', { style: styles.gradient }),
        React.createElement(
          'div',
          {
            style: styles.container,
            ref: function ref(container) {
              return _this2.container = container;
            },
            onMouseDown: this.handleMouseDown,
            onTouchMove: this.handleChange,
            onTouchStart: this.handleChange
          },
          React.createElement(
            'div',
            { style: styles.pointer },
            this.props.pointer ? React.createElement(this.props.pointer, this.props) : React.createElement('div', { style: styles.slider })
          )
        )
      );
    }
  }]);

  return Alpha;
}(PureComponent || Component);

export default Alpha;