qwc2/plugins/MapCompare.js

QGIS Web Client

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/**
 * Copyright 2018-2024 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 ReactDOM from 'react-dom';
import { connect } from 'react-redux';
import PropTypes from 'prop-types';
import { setSwipe } from '../actions/layers';
import Icon from '../components/Icon';
import { MapContainerPortalContext } from '../components/PluginsContainer';
import './style/MapCompare.css';

/**
 * Allows comparing the top layer with the rest of the map.
 *
 * Activated through a checkbox in the LayerTree.
 */
var MapCompare = /*#__PURE__*/function (_React$Component) {
  function MapCompare() {
    var _this;
    _classCallCheck(this, MapCompare);
    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }
    _this = _callSuper(this, MapCompare, [].concat(args));
    _defineProperty(_this, "startDragHandle", function (ev) {
      var rect = ev.currentTarget.getBoundingClientRect();
      var parentRect = ev.currentTarget.parentElement.getBoundingClientRect();
      var clickOffset = ev.clientX - rect.left;
      var moveHandle = function moveHandle(ev2) {
        var perc = (ev2.clientX - clickOffset - parentRect.left) / parentRect.width * 100;
        perc = Math.min(100, Math.max(0, perc));
        _this.props.setSwipe(perc);
      };
      ev.view.document.body.style.userSelect = 'none';
      ev.view.addEventListener("pointermove", moveHandle);
      ev.view.addEventListener("pointerup", function () {
        ev.view.document.body.style.userSelect = '';
        ev.view.removeEventListener("pointermove", moveHandle);
      }, {
        once: true
      });
    });
    return _this;
  }
  _inherits(MapCompare, _React$Component);
  return _createClass(MapCompare, [{
    key: "render",
    value: function render() {
      if (this.props.swipe === null) {
        return null;
      }
      var style = {
        left: this.props.swipe + "%"
      };
      return /*#__PURE__*/ReactDOM.createPortal(/*#__PURE__*/React.createElement("div", {
        id: "MapCompare",
        onPointerDown: this.startDragHandle,
        style: style
      }, /*#__PURE__*/React.createElement("div", {
        className: "map-compare-handle"
      }, /*#__PURE__*/React.createElement(Icon, {
        className: "map-compare-handle-icon",
        icon: "triangle-left"
      }), /*#__PURE__*/React.createElement(Icon, {
        className: "map-compare-handle-icon",
        icon: "triangle-right"
      }))), this.context);
    }
  }]);
}(React.Component);
_defineProperty(MapCompare, "contextType", MapContainerPortalContext);
_defineProperty(MapCompare, "propTypes", {
  setSwipe: PropTypes.func,
  swipe: PropTypes.number
});
export default connect(function (state) {
  return {
    swipe: state.layers.swipe
  };
}, {
  setSwipe: setSwipe
})(MapCompare);