content: import React, { Component } from 'react';
  import { classNames } from 'primereact/core';
  
  function _classCallCheck(instance, Constructor) {
    if (!(instance instanceof Constructor)) {
      throw new TypeError("Cannot call a class as a 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);
    }
  }
  
  function _createClass(Constructor, protoProps, staticProps) {
    if (protoProps) _defineProperties(Constructor.prototype, protoProps);
    if (staticProps) _defineProperties(Constructor, staticProps);
    return Constructor;
  }
  
  function _assertThisInitialized(self) {
    if (self === void 0) {
      throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
    }
  
    return self;
  }
  
  function _setPrototypeOf(o, p) {
    _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
      o.__proto__ = p;
      return o;
    };
  
    return _setPrototypeOf(o, p);
  }
  
  function _inherits(subClass, superClass) {
    if (typeof superClass !== "function" && superClass !== null) {
      throw new TypeError("Super expression must either be null or a function");
    }
  
    subClass.prototype = Object.create(superClass && superClass.prototype, {
      constructor: {
        value: subClass,
        writable: true,
        configurable: true
      }
    });
    if (superClass) _setPrototypeOf(subClass, superClass);
  }
  
  function _typeof(obj) {
    "@babel/helpers - typeof";
  
    if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") {
      _typeof = function _typeof(obj) {
        return typeof obj;
      };
    } else {
      _typeof = function _typeof(obj) {
        return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
      };
    }
  
    return _typeof(obj);
  }
  
  function _possibleConstructorReturn(self, call) {
    if (call && (_typeof(call) === "object" || typeof call === "function")) {
      return call;
    }
  
    return _assertThisInitialized(self);
  }
  
  function _getPrototypeOf(o) {
    _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
      return o.__proto__ || Object.getPrototypeOf(o);
    };
    return _getPrototypeOf(o);
  }
  
  function _defineProperty(obj, key, value) {
    if (key in obj) {
      Object.defineProperty(obj, key, {
        value: value,
        enumerable: true,
        configurable: true,
        writable: true
      });
    } else {
      obj[key] = value;
    }
  
    return obj;
  }
  
  function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }
  
  function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }
  var Knob = /*#__PURE__*/function (_Component) {
    _inherits(Knob, _Component);
  
    var _super = _createSuper(Knob);
  
    function Knob(props) {
      var _this;
  
      _classCallCheck(this, Knob);
  
      _this = _super.call(this, props);
      _this.state = {};
      _this.radius = 40;
      _this.midX = 50;
      _this.midY = 50;
      _this.minRadians = 4 * Math.PI / 3;
      _this.maxRadians = -Math.PI / 3;
      _this.onClick = _this.onClick.bind(_assertThisInitialized(_this));
      _this.onMouseDown = _this.onMouseDown.bind(_assertThisInitialized(_this));
      _this.onMouseUp = _this.onMouseUp.bind(_assertThisInitialized(_this));
      _this.onTouchStart = _this.onTouchStart.bind(_assertThisInitialized(_this));
      _this.onTouchEnd = _this.onTouchEnd.bind(_assertThisInitialized(_this));
      _this.onMouseMove = _this.onMouseMove.bind(_assertThisInitialized(_this));
      _this.onTouchMove = _this.onTouchMove.bind(_assertThisInitialized(_this));
      return _this;
    }
  
    _createClass(Knob, [{
      key: "updateValue",
      value: function updateValue(offsetX, offsetY) {
        var dx = offsetX - this.props.size / 2;
        var dy = this.props.size / 2 - offsetY;
        var angle = Math.atan2(dy, dx);
        var start = -Math.PI / 2 - Math.PI / 6;
        this.updateModel(angle, start);
      }
    }, {
      key: "updateModel",
      value: function updateModel(angle, start) {
        var mappedValue;
        if (angle > this.maxRadians) mappedValue = this.mapRange(angle, this.minRadians, this.maxRadians, this.props.min, this.props.max);else if (angle < start) mappedValue = this.mapRange(angle + 2 * Math.PI, this.minRadians, this.maxRadians, this.props.min, this.props.max);else return;
  
        if (this.props.onChange) {
          var newValue = Math.round((mappedValue - this.props.min) / this.props.step) * this.props.step + this.props.min;
          this.props.onChange({
            value: newValue
          });
        }
      }
    }, {
      key: "mapRange",
      value: function mapRange(x, inMin, inMax, outMin, outMax) {
        return (x - inMin) * (outMax - outMin) / (inMax - inMin) + outMin;
      }
    }, {
      key: "onClick",
      value: function onClick(event) {
        if (!this.props.disabled && !this.props.readOnly) {
          this.updateValue(event.nativeEvent.offsetX, event.nativeEvent.offsetY);
        }
      }
    }, {
      key: "onMouseDown",
      value: function onMouseDown(event) {
        if (!this.props.disabled && !this.props.readOnly) {
          this.windowMouseMoveListener = this.onMouseMove;
          this.windowMouseUpListener = this.onMouseUp;
          window.addEventListener('mousemove', this.windowMouseMoveListener);
          window.addEventListener('mouseup', this.windowMouseUpListener);
          event.preventDefault();
        }
      }
    }, {
      key: "onMouseUp",
      value: function onMouseUp(event) {
        if (!this.props.disabled && !this.props.readOnly) {
          window.removeEventListener('mousemove', this.windowMouseMoveListener);
          window.removeEventListener('mouseup', this.windowMouseUpListener);
          this.windowMouseMoveListener = null;
          this.windowMouseUpListener = null;
          event.preventDefault();
        }
      }
    }, {
      key: "onTouchStart",
      value: function onTouchStart(event) {
        if (!this.props.disabled && !this.props.readOnly) {
          this.windowTouchMoveListener = this.onTouchMove;
          this.windowTouchEndListener = this.onTouchEnd;
          window.addEventListener('touchmove', this.windowTouchMoveListener, {
            passive: false,
            cancelable: false
          });
          window.addEventListener('touchend', this.windowTouchEndListener);
        }
      }
    }, {
      key: "onTouchEnd",
      value: function onTouchEnd(event) {
        if (!this.props.disabled && !this.props.readOnly) {
          window.removeEventListener('touchmove', this.windowTouchMoveListener);
          window.removeEventListener('touchend', this.windowTouchEndListener);
          this.windowTouchMoveListener = null;
          this.windowTouchEndListener = null;
        }
      }
    }, {
      key: "onMouseMove",
      value: function onMouseMove(event) {
        if (!this.props.disabled && !this.props.readOnly) {
          this.updateValue(event.offsetX, event.offsetY);
          event.preventDefault();
        }
      }
    }, {
      key: "onTouchMove",
      value: function onTouchMove(event) {
        if (!this.props.disabled && !this.props.readOnly && event.touches.length === 1) {
          var rect = this.element.getBoundingClientRect();
          var touch = event.targetTouches.item(0);
          var offsetX = touch.clientX - rect.left;
          var offsetY = touch.clientY - rect.top;
          this.updateValue(offsetX, offsetY);
          event.preventDefault();
        }
      }
    }, {
      key: "rangePath",
      value: function rangePath() {
        return "M ".concat(this.minX(), " ").concat(this.minY(), " A ").concat(this.radius, " ").concat(this.radius, " 0 1 1 ").concat(this.maxX(), " ").concat(this.maxY());
      }
    }, {
      key: "valuePath",
      value: function valuePath() {
        return "M ".concat(this.zeroX(), " ").concat(this.zeroY(), " A ").concat(this.radius, " ").concat(this.radius, " 0 ").concat(this.largeArc(), " ").concat(this.sweep(), " ").concat(this.valueX(), " ").concat(this.valueY());
      }
    }, {
      key: "zeroRadians",
      value: function zeroRadians() {
        if (this.props.min > 0 && this.props.max > 0) return this.mapRange(this.props.min, this.props.min, this.props.max, this.minRadians, this.maxRadians);else return this.mapRange(0, this.props.min, this.props.max, this.minRadians, this.maxRadians);
      }
    }, {
      key: "valueRadians",
      value: function valueRadians() {
        return this.mapRange(this.props.value, this.props.min, this.props.max, this.minRadians, this.maxRadians);
      }
    }, {
      key: "minX",
      value: function minX() {
        return this.midX + Math.cos(this.minRadians) * this.radius;
      }
    }, {
      key: "minY",
      value: function minY() {
        return this.midY - Math.sin(this.minRadians) * this.radius;
      }
    }, {
      key: "maxX",
      value: function maxX() {
        return this.midX + Math.cos(this.maxRadians) * this.radius;
      }
    }, {
      key: "maxY",
      value: function maxY() {
        return this.midY - Math.sin(this.maxRadians) * this.radius;
      }
    }, {
      key: "zeroX",
      value: function zeroX() {
        return this.midX + Math.cos(this.zeroRadians()) * this.radius;
      }
    }, {
      key: "zeroY",
      value: function zeroY() {
        return this.midY - Math.sin(this.zeroRadians()) * this.radius;
      }
    }, {
      key: "valueX",
      value: function valueX() {
        return this.midX + Math.cos(this.valueRadians()) * this.radius;
      }
    }, {
      key: "valueY",
      value: function valueY() {
        return this.midY - Math.sin(this.valueRadians()) * this.radius;
      }
    }, {
      key: "largeArc",
      value: function largeArc() {
        return Math.abs(this.zeroRadians() - this.valueRadians()) < Math.PI ? 0 : 1;
      }
    }, {
      key: "sweep",
      value: function sweep() {
        return this.valueRadians() > this.zeroRadians() ? 0 : 1;
      }
    }, {
      key: "valueToDisplay",
      value: function valueToDisplay() {
        return this.props.valueTemplate.replace("{value}", this.props.value.toString());
      }
    }, {
      key: "render",
      value: function render() {
        var _this2 = this;
  
        var containerClassName = classNames('p-knob p-component', {
          'p-disabled': this.props.disabled
        }, this.props.className);
        var text = this.props.showValue && /*#__PURE__*/React.createElement("text", {
          x: 50,
          y: 57,
          textAnchor: 'middle',
          fill: this.props.textColor,
          className: 'p-knob-text',
          name: this.props.name
        }, this.valueToDisplay());
        return /*#__PURE__*/React.createElement("div", {
          id: this.props.id,
          className: containerClassName,
          style: this.props.style,
          ref: function ref(el) {
            return _this2.element = el;
          }
        }, /*#__PURE__*/React.createElement("svg", {
          viewBox: "0 0 100 100",
          width: this.props.size,
          height: this.props.size,
          onClick: this.onClick,
          onMouseDown: this.onMouseDown,
          onMouseUp: this.onMouseUp,
          onTouchStart: this.onTouchStart,
          onTouchEnd: this.onTouchEnd
        }, /*#__PURE__*/React.createElement("path", {
          d: this.rangePath(),
          strokeWidth: this.props.strokeWidth,
          stroke: this.props.rangeColor,
          className: 'p-knob-range'
        }), /*#__PURE__*/React.createElement("path", {
          d: this.valuePath(),
          strokeWidth: this.props.strokeWidth,
          stroke: this.props.valueColor,
          className: 'p-knob-value'
        }), text));
      }
    }]);
  
    return Knob;
  }(Component);
  
  _defineProperty(Knob, "defaultProps", {
    id: null,
    style: null,
    className: null,
    value: null,
    size: 100,
    disabled: false,
    readOnly: false,
    showValue: true,
    step: 1,
    min: 0,
    max: 100,
    strokeWidth: 14,
    name: null,
    valueColor: 'var(--primary-color, Black)',
    rangeColor: 'var(--surface-d, LightGray)',
    textColor: 'var(--text-color-secondary, Black)',
    valueTemplate: '{value}',
    onChange: null
  });
  
  export { Knob };
  