qwc2-lts/plugins/map/ScaleBarSupport.js

QGIS Web Client

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/**
 * Copyright 2015 GeoSolutions Sas
 * Copyright 2016-2024 Sourcepole AG
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree.
 */

import React from 'react';
import { connect } from 'react-redux';
import ol from 'openlayers';
import PropTypes from 'prop-types';
import './style/ScaleBarSupport.css';

/**
 * Scalebar support for the map component.
 */
var ScaleBarSupport = /*#__PURE__*/function (_React$Component) {
  function ScaleBarSupport(props) {
    var _this;
    _classCallCheck(this, ScaleBarSupport);
    _this = _callSuper(this, ScaleBarSupport, [props]);
    _defineProperty(_this, "componentWillUnmount", function () {
      if (_this.scalebar) {
        _this.props.map.removeControl(_this.scalebar);
      }
    });
    _defineProperty(_this, "initScaleBar", function (el) {
      _this.scalebar = new ol.control.ScaleLine(_objectSpread(_objectSpread({
        target: el
      }, ScaleBarSupport.defaultOpt), _this.props.options));
      _this.props.map.addControl(_this.scalebar);
    });
    _this.scalebar = null;
    return _this;
  }
  _inherits(ScaleBarSupport, _React$Component);
  return _createClass(ScaleBarSupport, [{
    key: "render",
    value: function render() {
      var style = this.props.mapMargins.splitTopAndBottomBar ? {
        marginLeft: this.props.mapMargins.left + 'px'
      } : {};
      return /*#__PURE__*/React.createElement("div", {
        id: "ScaleBar",
        ref: this.initScaleBar,
        style: style
      });
    }
  }]);
}(React.Component);
_defineProperty(ScaleBarSupport, "propTypes", {
  map: PropTypes.object,
  mapMargins: PropTypes.object,
  /** See [OpenLayers API doc](https://openlayers.org/en/latest/apidoc/module-ol_control_ScaleLine-ScaleLine.html) */
  options: PropTypes.object
});
_defineProperty(ScaleBarSupport, "defaultOpt", {
  minWidth: 64,
  units: 'metric'
});
export default connect(function (state) {
  return {
    mapMargins: state.windows.mapMargins
  };
})(ScaleBarSupport);