@wirelineio/shogiboardjsx/dist/es/Shogiboard/CustomDragLayer.js

Shogiboardjsx is a shogiboard for React. Inspired by Chessboardjsx

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

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

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

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

import React, { Component } from 'react';
import PropTypes from 'prop-types';
import { DragLayer } from 'react-dnd';
import { renderChessPiece } from './Piece';

var CustomDragLayer =
/*#__PURE__*/
function (_Component) {
  _inherits(CustomDragLayer, _Component);

  function CustomDragLayer() {
    _classCallCheck(this, CustomDragLayer);

    return _possibleConstructorReturn(this, _getPrototypeOf(CustomDragLayer).apply(this, arguments));
  }

  _createClass(CustomDragLayer, [{
    key: "render",
    value: function render() {
      var _this$props = this.props,
          isDragging = _this$props.isDragging,
          width = _this$props.width,
          item = _this$props.item,
          id = _this$props.id,
          currentOffset = _this$props.currentOffset,
          wasPieceTouched = _this$props.wasPieceTouched,
          pieces = _this$props.pieces,
          sourceSquare = _this$props.sourceSquare;
      return isDragging && item.board === id ? React.createElement("div", {
        style: layerStyles
      }, React.createElement("div", {
        style: getItemStyle(currentOffset, wasPieceTouched)
      }, renderChessPiece({
        width: width,
        pieces: pieces,
        piece: item.piece,
        isDragging: isDragging,
        customDragLayerStyles: {
          opacity: 1
        },
        sourceSquare: sourceSquare
      }))) : null;
    }
  }]);

  return CustomDragLayer;
}(Component);

CustomDragLayer.propTypes = {
  item: PropTypes.object,
  currentOffset: PropTypes.shape({
    x: PropTypes.number.isRequired,
    y: PropTypes.number.isRequired
  }),
  isDragging: PropTypes.bool.isRequired,
  width: PropTypes.number,
  pieces: PropTypes.object,
  id: PropTypes.oneOfType([PropTypes.string, PropTypes.number]),
  wasPieceTouched: PropTypes.bool,
  sourceSquare: PropTypes.string
};

function collect(monitor) {
  return {
    item: monitor.getItem(),
    currentOffset: monitor.getSourceClientOffset(),
    isDragging: monitor.isDragging()
  };
}

export default DragLayer(collect)(CustomDragLayer);
var layerStyles = {
  position: 'fixed',
  pointerEvents: 'none',
  zIndex: 10,
  left: 0,
  top: 0
};

var getItemStyle = function getItemStyle(currentOffset, wasPieceTouched) {
  if (!currentOffset) return {
    display: 'none'
  };
  var x = currentOffset.x,
      y = currentOffset.y;
  var transform = wasPieceTouched ? "translate(".concat(x, "px, ").concat(y + -25, "px) scale(2)") : "translate(".concat(x, "px, ").concat(y, "px)");
  return {
    transform: transform
  };
};