index.js

(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('karas')) :
  typeof define === 'function' && define.amd ? define(['karas'], factory) :
  (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.AnimateSprite = factory(global.karas));
}(this, (function (karas) { 'use strict';

  function _interopDefaultLegacy (e) { return e && typeof e === 'object' && 'default' in e ? e : { 'default': e }; }

  var karas__default = /*#__PURE__*/_interopDefaultLegacy(karas);

  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 _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 _getPrototypeOf(o) {
    _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) {
      return o.__proto__ || Object.getPrototypeOf(o);
    };
    return _getPrototypeOf(o);
  }

  function _setPrototypeOf(o, p) {
    _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) {
      o.__proto__ = p;
      return o;
    };

    return _setPrototypeOf(o, p);
  }

  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;
    }
  }

  function _assertThisInitialized(self) {
    if (self === void 0) {
      throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
    }

    return self;
  }

  function _possibleConstructorReturn(self, call) {
    if (call && (typeof call === "object" || typeof call === "function")) {
      return call;
    }

    return _assertThisInitialized(self);
  }

  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);
    };
  }

  var version = "0.3.1";

  var Sprite = /*#__PURE__*/function (_karas$Component) {
    _inherits(Sprite, _karas$Component);

    var _super = _createSuper(Sprite);

    function Sprite(props) {
      var _this;

      _classCallCheck(this, Sprite);

      _this = _super.call(this, props);
      _this.count = 0;
      _this.times = 0;
      _this.playbackRate = props.playbackRate || 1;
      return _this;
    }

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

        var _this$props = this.props,
            nw = _this$props.nw,
            nh = _this$props.nh,
            _this$props$delay = _this$props.delay,
            delay = _this$props$delay === void 0 ? 0 : _this$props$delay,
            _this$props$duration = _this$props.duration,
            duration = _this$props$duration === void 0 ? 1000 : _this$props$duration,
            _this$props$iteration = _this$props.iterations,
            iterations = _this$props$iteration === void 0 ? 1 : _this$props$iteration,
            fill = _this$props.fill,
            autoPlay = _this$props.autoPlay;
        var total = nw * nh;
        var sr = this.shadowRoot;

        var cb = this.cb = function (diff) {
          _this2.count += diff * _this2.playbackRate;

          if (_this2.times === 0 && _this2.count < delay) {
            return;
          }

          var time = _this2.times ? _this2.count : _this2.count - delay;

          if (time >= duration) {
            _this2.times++;

            if (_this2.times >= iterations) {
              sr.removeFrameAnimate(cb);
              var backgroundPosition = ['forwards', 'both'].indexOf(fill) > -1 ? '100% 100%' : '1000% 1000%';
              sr.updateStyle({
                backgroundPosition: backgroundPosition
              });
              return;
            }

            _this2.count = time - duration;
          }

          var i = Math.floor(time * total / duration);
          sr.updateStyle({
            backgroundPositionX: i % nw / (nw - 1) * 100 + '%',
            backgroundPositionY: Math.floor(i / nw) / (nh - 1) * 100 + '%'
          });
        };

        if (autoPlay !== false) {
          sr.frameAnimate(cb);
        }
      }
    }, {
      key: "play",
      value: function play() {
        this.count = 0;
        this.times = 0;
        this.resume();
      }
    }, {
      key: "pause",
      value: function pause() {
        this.shadowRoot.removeFrameAnimate(this.cb);
      }
    }, {
      key: "resume",
      value: function resume() {
        this.shadowRoot.frameAnimate(this.cb);
      }
    }, {
      key: "render",
      value: function render() {
        var nw = this.props.nw,
            nh = this.props.nh,
            fill = this.props.fill;
        var backgroundPosition = ['backwards', 'both'].indexOf(fill) > -1 ? '0 0' : '1000% 1000%';
        return karas__default['default'].createElement("div", {
          style: {
            backgroundRepeat: 'no-repeat',
            backgroundPosition: backgroundPosition,
            backgroundSize: "".concat(nw * 100, "% ").concat(nh * 100, "%")
          }
        });
      }
    }]);

    return Sprite;
  }(karas__default['default'].Component);

  Sprite.version = version;

  return Sprite;

})));
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