zent/lib/colorpicker/common/Alpha.js

一套前端设计语言和基于React的实现

'use strict';

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

var _extends2 = require('babel-runtime/helpers/extends');

var _extends3 = _interopRequireDefault(_extends2);

var _classCallCheck2 = require('babel-runtime/helpers/classCallCheck');

var _classCallCheck3 = _interopRequireDefault(_classCallCheck2);

var _createClass2 = require('babel-runtime/helpers/createClass');

var _createClass3 = _interopRequireDefault(_createClass2);

var _possibleConstructorReturn2 = require('babel-runtime/helpers/possibleConstructorReturn');

var _possibleConstructorReturn3 = _interopRequireDefault(_possibleConstructorReturn2);

var _inherits2 = require('babel-runtime/helpers/inherits');

var _inherits3 = _interopRequireDefault(_inherits2);

var _react = require('react');

var _react2 = _interopRequireDefault(_react);

var _reactcss = require('../helpers/reactcss');

var _reactcss2 = _interopRequireDefault(_reactcss);

var _alpha = require('../helpers/alpha');

var alpha = _interopRequireWildcard(_alpha);

var _Checkboard = require('./Checkboard');

var _Checkboard2 = _interopRequireDefault(_Checkboard);

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj['default'] = obj; return newObj; } }

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

/**
 * 透明度
 */
var Alpha = exports.Alpha = function (_Component) {
  (0, _inherits3['default'])(Alpha, _Component);

  function Alpha() {
    var _ref;

    var _temp, _this, _ret;

    (0, _classCallCheck3['default'])(this, Alpha);

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

    return _ret = (_temp = (_this = (0, _possibleConstructorReturn3['default'])(this, (_ref = Alpha.__proto__ || Object.getPrototypeOf(Alpha)).call.apply(_ref, [this].concat(args))), _this), _this.handleChange = function (e, skip) {
      var change = alpha.calculateChange(e, skip, _this.props, _this.refs);
      change && _this.props.onChange(change, e);
    }, _this.handleMouseDown = function (e) {
      _this.handleChange(e, true);
      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), (0, _possibleConstructorReturn3['default'])(_this, _ret);
  }

  (0, _createClass3['default'])(Alpha, [{
    key: 'componentWillUnmount',
    value: function componentWillUnmount() {
      this.unbindEventListeners();
    }
  }, {
    key: 'render',
    value: function render() {
      var _this2 = this;

      var rgb = this.props.rgb;
      var styles = (0, _reactcss2['default'])({
        'default': {
          alpha: {
            absolute: '0px 0px 0px 0px',
            borderRadius: this.props.radius
          },
          checkboard: {
            absolute: '0px 0px 0px 0px',
            overflow: 'hidden'
          },
          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: (0, _extends3['default'])({}, this.props.style)
      }, {
        vertical: this.props.direction === 'vertical',
        overwrite: true
      });

      return _react2['default'].createElement(
        'div',
        { style: styles.alpha },
        _react2['default'].createElement(
          'div',
          { style: styles.checkboard },
          _react2['default'].createElement(_Checkboard2['default'], { renderers: this.props.renderers })
        ),
        _react2['default'].createElement('div', { style: styles.gradient }),
        _react2['default'].createElement(
          'div',
          {
            className: 'alpha-bar',
            style: styles.container,
            ref: function ref(_ref2) {
              return _this2.refs = _ref2;
            },
            onMouseDown: this.handleMouseDown,
            onTouchMove: this.handleChange,
            onTouchStart: this.handleChange
          },
          _react2['default'].createElement(
            'div',
            { style: styles.pointer },
            this.props.pointer ? _react2['default'].createElement(this.props.pointer, this.props) : _react2['default'].createElement('div', { style: styles.slider })
          )
        )
      );
    }
  }]);
  return Alpha;
}(_react.Component);

exports['default'] = Alpha;