Select a Google Maps Polygon 外部地图控制和修改属性

Question

我正在尝试在地图控件外触发事件时修改多边形并且似乎撞到了砖墙。

我的地图右侧有一系列 div，我想在触发 mouseenter 事件时将多边形上的笔划粗细属性更改为较粗的线并重置它触发鼠标离开时为默认值。

我还希望能够在他们单击此 div

时 select 多边形

$( ".zonal" ).mouseenter(function() {
  for (var i = 0; i < gPolygons.length; i++) {
   if(gPolygons[i].id == $(this).attr('id')) 
     {
       gPolygons[i].setOptions({strokeWeight: 6.0});       
     }
  }
});

$( ".zonal" ).mouseleave(function() {
  for (var i = 0; i < gPolygons.length; i++) {
   if(gPolygons[i].id == $(this).attr('id')) 
     {
       gPolygons[i].setOptions({strokeWeight: 2.0}); 
     }
  }
});

我已经将多边形推到一个数组中并尝试使用以下但它不起作用

gPolygons[i].setOptions({strokeWeight: 6.0});

这是我正在尝试做的事情的视觉效果，所以当他们将鼠标悬停在区域 1 上时，多边形的边界线会变粗，如果单击 div，相关的多边形将是 selected.

感谢大家的帮助

Answer 1

我在控制台中看到以下 javascript 错误：Uncaught TypeError: gPolygons[i].setOptions is not a function。

您推向 gPolygons 和多边形数组的 poly 对象不是 google.maps.Polygon 对象，因此它没有 setOptions 方法。

function formPolygon(shapePoly){
  var shapeid = shapePoly.get('id');
  var res = (shapePoly.getPath().getArray());
  var coordsArr = iterateCoords(res);
  // this is not a google.maps.Polygon:
  var poly = {id:shapeid,coords:coordsArr, polycolor:shapePoly.get('fillColor')}
  polygons = $.grep(polygons, function(e){ 
    return e.id != shapeid; 
  });
  polygons.push(poly);
  // push the reference to the google.maps.Polygon into the array
  gPolygons.push(shapePoly);
  console.log(polygons);
}

updated fiddle

代码片段：

var zVal = 999999999;
var polygons = [];
var gPolygons = [];
var curID = "";
var mapMain;
$('#tt').click(function() {
  var res = (selectedShape.getPath().getArray());
  alert(res);
});

$('#tt2').click(function() {
  alert(polygons[0].coords[0].lat);
});

$(".zonal").mouseenter(function() {
  for (var i = 0; i < gPolygons.length; i++) {
    if (gPolygons[i].id == $(this).attr('id')) {
      gPolygons[i].setOptions({
        strokeWeight: 6.0
      });
    }
  }
});

$(".zonal").mouseleave(function() {
  for (var i = 0; i < gPolygons.length; i++) {
    if (gPolygons[i].id == $(this).attr('id')) {
      gPolygons[i].setOptions({
        strokeWeight: 2.0
      });
    }
  }
});

$('.zonal').click(function() {
  var testid = $(this).attr('id');
  $('#mapOverlay').hide();
  $('#hdActive').val(testid);
  curID = testid;
  clearSelection();
});
var drawingManager;
var selectedShape;
var colors = ['#1E90FF', '#32CD32', '#FF8C00', '#4B0082'];
var selectedColor;
var colorButtons = {};

function clearSelection() {
  if (selectedShape) {
    selectedShape.setEditable(false);
    selectedShape = null;
  }

}

function checkIDSet(e, a) {
  e.preventDefault();
  if ($('#hdActive').val() == "") {
    alert('Please select a zone');
    return false;
  }
}

function setSelection(shape) {
  clearSelection();
  selectedShape = shape;
  shape.setEditable(true);
  selectColor(shape.get('fillColor') || shape.get('strokeColor'));
  $('#zInd').val(shape.get('id'));
  console.log(shape);
}

function deleteSelectedShape() {
  if (selectedShape) {
    $('#' + selectedShape.id).attr("disabled", false);
    deletePolygon(selectedShape);
    selectedShape.setMap(null);
  }
}

function selectColor(color) {
  selectedColor = color;
  for (var i = 0; i < colors.length; ++i) {
    var currColor = colors[i];
    colorButtons[currColor].style.border = currColor == color ? '2px solid #789' : '2px solid #fff';
  }

  // Retrieves the current options from the drawing manager and replaces the
  // stroke or fill color as appropriate.
  var polylineOptions = drawingManager.get('polylineOptions');
  polylineOptions.strokeColor = color;
  drawingManager.set('polylineOptions', polylineOptions);

  var rectangleOptions = drawingManager.get('rectangleOptions');
  rectangleOptions.fillColor = color;
  drawingManager.set('rectangleOptions', rectangleOptions);

  var circleOptions = drawingManager.get('circleOptions');
  circleOptions.fillColor = color;
  drawingManager.set('circleOptions', circleOptions);

  var polygonOptions = drawingManager.get('polygonOptions');
  polygonOptions.fillColor = color;
  polygonOptions.strokeColor = color;
  drawingManager.set('polygonOptions', polygonOptions);
}

function formPolygon(shapePoly) {
  var shapeid = shapePoly.get('id');
  var res = (shapePoly.getPath().getArray());
  var coordsArr = iterateCoords(res);
  var poly = {
    id: shapeid,
    coords: coordsArr,
    polycolor: shapePoly.get('fillColor')
  }
  polygons = $.grep(polygons, function(e) {
    return e.id != shapeid;
  });
  polygons.push(poly);
  gPolygons.push(shapePoly);
  console.log(polygons);
}

function iterateCoords(arr) {
  var coords = [];
  var base = arr.toString();
  base = base.replace(/\(/g, "");
  var baseArr = base.split("),");
  $(baseArr).each(function(key, value) {
    var cObj = value.toString();
    var tcObj = cObj.split(',');
    var c = {
      lat: tcObj[0].toString(),
      lon: tcObj[1].toString()
    }
    coords.push(c);
  });
  console.log(coords);
  return coords;
}

function deletePolygon(shapePoly) {
  var shapeid = shapePoly.get('id');
  var res = (shapePoly.getPath().getArray());
  var poly = {
    id: shapeid,
    coords: res,
    polycolor: shapePoly.get('fillcolor')
  }
  polygons = $.grep(polygons, function(e) {
    return e.id != shapeid;
  });
  console.log(polygons);
}

function setSelectedShapeColor(color) {
  if (selectedShape) {
    if (selectedShape.type == google.maps.drawing.OverlayType.POLYLINE) {
      selectedShape.set('strokeColor', color);
    } else {
      selectedShape.set('fillColor', color);
    }
  }
}

function makeColorButton(color) {
  var button = document.createElement('span');
  button.className = 'color-button';
  button.style.backgroundColor = color;
  google.maps.event.addDomListener(button, 'click', function() {
    selectColor(color);
    setSelectedShapeColor(color);
  });

  return button;
}

function buildColorPalette() {
  var colorPalette = document.getElementById('color-palette');
  for (var i = 0; i < colors.length; ++i) {
    var currColor = colors[i];
    var colorButton = makeColorButton(currColor);
    colorPalette.appendChild(colorButton);
    colorButtons[currColor] = colorButton;
  }
  selectColor(colors[0]);
}

function initialize() {
  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: 15,
    center: new google.maps.LatLng(55.034997, -7.193612),
    mapTypeId: google.maps.MapTypeId.ROADMAP,
    disableDefaultUI: true,
    zoomControl: true
  });
  mapMain = map;
  var polyOptions = {
    strokeWeight: 2,
    fillOpacity: 0.25,
    id: $('#hdActive').val(),
    zIndex: zVal,
    editable: true
  };
  // Creates a drawing manager attached to the map that allows the user to draw
  // markers, lines, and shapes.
  drawingManager = new google.maps.drawing.DrawingManager({
    drawingMode: google.maps.drawing.OverlayType.POLYGON,
    markerOptions: {
      draggable: false,
      icon: 'http://www.myiconfinder.com/uploads/iconsets/256-256-a5485b563efc4511e0cd8bd04ad0fe9e.png'
    },
    polylineOptions: {
      editable: true
    },
    rectangleOptions: polyOptions,
    circleOptions: polyOptions,
    polygonOptions: polyOptions,
    drawingControlOptions: {
      position: google.maps.ControlPosition.TOP_CENTER,
      drawingModes: [
        google.maps.drawing.OverlayType.POLYGON
      ]
    },
    map: map
  });
  var iwfMarker = new google.maps.Marker({
    position: {
      lat: 55.034997,
      lng: -7.193612
    },
    icon: 'http://www.myiconfinder.com/uploads/iconsets/256-256-a5485b563efc4511e0cd8bd04ad0fe9e.png',
    map: map
  });
  iwfMarker.setMap(map);
  google.maps.event.addListener(drawingManager, 'overlaycomplete', function(e) {
    zVal = zVal - 1000000;
    if (e.type != google.maps.drawing.OverlayType.MARKER) {
      // Switch back to non-drawing mode after drawing a shape.
      drawingManager.setDrawingMode(null);


      // Add an event listener that selects the newly-drawn shape when the user
      // mouses down on it.
      var newShape = e.overlay;

      //Check to see if the shape has an id if not alert user to pick a zone
      newShape.type = e.type;
      newShape.id = curID;
      //newShape.zIndex=zVal;
      newShape.set('zIndex', zVal);
      $('#' + curID).addClass("set", true);
      google.maps.event.addListener(newShape, 'click', function() {
        if (this.id == "" || this.id == null) {
          alert('no id');
        }
        setSelection(newShape);
      });
      setSelection(newShape);
      formPolygon(newShape);
      clearSelection();
    }
  });

  // Clear the current selection when the drawing mode is changed, or when the
  // map is clicked.
  google.maps.event.addListener(drawingManager, 'drawingmode_changed', clearSelection);
  google.maps.event.addListener(map, 'click', clearSelection);
  google.maps.event.addDomListener(document.getElementById('delete-button'), 'click', deleteSelectedShape);

  google.maps.event.addDomListener(document.getElementById('map'), 'click', checkIDSet);

  buildColorPalette();
}
google.maps.event.addDomListener(window, 'load', initialize);

#zonalCont {
   position: relative;
 }
 .zonal {
   width: 30%;
   border: 2px solid blue;
   background-color: #cecece;
   height: 55px;
   border-bottom: 20px;
 }
 .zonal.set {
   width: 30%;
   border: 2px solid blue;
   background-color: red;
   height: 55px;
   border-bottom: 20px;
 }
 #map,
 html,
 body {
   padding: 0;
   margin: 0;
   height: 100%;
 }
 #panel {
   width: 200px;
   font-family: Arial, sans-serif;
   font-size: 13px;
   float: right;
   margin: 10px;
 }
 #color-palette {
   clear: both;
 }
 .color-button {
   width: 14px;
   height: 14px;
   font-size: 0;
   margin: 2px;
   float: left;
   cursor: pointer;
 }
 #delete-button {
   margin-top: 5px;
 }

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maps.google.com/maps/api/js?libraries=drawing&key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk"></script>
<span id="tt">Test</span>
<span id="tt2">Test Sel</span>
<div id="panel">
  <div>
    <div class='zonalCont'>
      <div id="zone1" class="zonal">Zone 1</div>
    </div>
    <div class='zonalCont'>
      <div id="zone2" class="zonal">Zone 2</div>
    </div>
    <div class='zonalCont'>
      <div id="zone3" class="zonal">Zone 3</div>
    </div>
    <div class='zonalCont'>
      <div id="zone4" class="zonal">Zone 4</div>
    </div>
  </div>
  <div id="color-palette"></div>
  <div>
    <button id="delete-button">Delete Selected Shape</button>
  </div>
  <div>
    <input type="text" id="zInd" />
  </div>
</div>

<div id="map"></div>
<div id="mapOverlay" style="position:absolute;left:0;top:0;width:75%;height:100%;background-color:#fff;opacity:0.5;text-align:center">
  <h2 style="line-height:15em">Select A Zone</h2>
</div>
<input type="hidden" class="hdAct" id="hdActive" value="" />

Select a Google Maps Polygon 外部地图控制和修改属性

Select a Google Maps Polygon outside map control and modify properties

javascript

google-maps

polygons

google-maps-api-3

google-maps-drawing