Question

我正在尝试使用 Google数据层 显示一些公交路线，然后添加一些自定义图标标记。适用于Chrome和Firefox，但在IE 11中我只能获得路线。我在某些混淆代码的某处深处遇到了 InvalidStateError 。

标记使用带有内联SVG的数据uri，该SVG转换为base 64字符串。我也尝试过不转换为base 64;这不会产生任何明显的错误，但标记仍然无法显示。

下面粘贴了简化的javascript，您可以在jsfiddle看到它。

    var map;

    map = new google.maps.Map(document.getElementById('map-canvas'), {
      zoom: 11,
      center: {lat: 38.813605, lng: -89.957399}
    });

    var geoJsonRoutesUrl = 'https://storage.googleapis.com/gtfs-test/MCT-All-Bus-Routes.json';

    var routesLayer = new google.maps.Data(); 
    routesLayer.loadGeoJson(geoJsonRoutesUrl);
    routesLayer.setMap(map);  
    routesLayer.setStyle(function(feature) {
      return ({
        strokeColor: feature.getProperty('color'),
      fillColor: feature.getProperty('color'),
        strokeWeight: 6
      });
    });

    var geoJsonRouteMarkersUrl = 'https://storage.googleapis.com/gtfs-test/MCT-All-Bus-Route-Markers.json';
    var routeMarkersLayer = new google.maps.Data(); 
    routeMarkersLayer.loadGeoJson(geoJsonRouteMarkersUrl);
    routeMarkersLayer.setMap(map);
    routeMarkersLayer.setStyle(function(feature) {
    var markerIcon = CreateRouteMarkersIconDefinition(
        feature.getProperty('route'),
        feature.getProperty('color'),
        feature.getProperty('backColor'));
      return ({icon: markerIcon});
    });


  function CreateRouteMarkersIconDefinition(route, color, backColor) {
    var svgHtml = '<svg xmlns="http://www.w3.org/2000/svg" xmlns:svg="http://www.w3.org/2000/svg" width="30" height="30">';
    svgHtml += '<ellipse cx="15" cy="15" r="15" rx="15" ry="10" fill="' +  backColor + '" />';
    svgHtml += '<text x="15" y="20" style="text-anchor: middle;" font-family="Verdana" font-size="12px" font-weight = "bold" fill="' + color + '" >' + route + '</text>';
    svgHtml += '</svg>';
    var svgIcon = {
      url: 'data:image/svg+xml;charset=UTF-8;base64,' + btoa(svgHtml),
      anchor: new google.maps.Point(15, 15)
    };

    return svgIcon;
  }

Answer 1

我遇到了类似的问题，最终发现你可以使SVG和数据URI SVG图像正常工作，但SVG需要一些其他图像类型不需要的参数。具体来说，一旦我在图标的定义上设置了尺寸和scaledSize参数（以及uri，原点和锚点值），错误就会消失并且标记会被渲染。我的样本标记如下（svg已被定义为我想要的SVG作为标记）：

var bubbleImage = {
              url: 'data:image/svg+xml;base64,' + Base64.encode(svg),
              size: new google.maps.Size(192, 21),
              scaledSize: new google.maps.Size(192,21),
              origin: new google.maps.Point(0, 0),
              anchor: new google.maps.Point(88, 53)
          };
          var bubbleMarker = new google.maps.Marker({
              position: feature.position,
              icon: bubbleImage,
              map: window.map,
              optimized: false,
              zIndex: 1
          });

Answer 2

MDN（Mozilla Developer Network）中的

This reference声称“Internet Explorer 8及更高版本仅支持CSS中图像的数据URI，”。我猜这只是在IE中不受支持。还有什么新东西？

Answer 3

OK！我在我的网站上完成了这个，我在angularJS项目中使用它，我使用Jquery分享它。我尝试了两种方法来创建自定义谷歌地图标记，这个运行代码使用canvg.js是浏览器的最佳兼容性。注释掉的代码不支持IE11 urrently（“scaledSize”和“optimized：false”在一起似乎做了棘手的）。

var marker;
var CustomShapeCoords = [16, 1.14, 21, 2.1, 25, 4.2, 28, 7.4, 30, 11.3, 30.6, 15.74, 25.85, 26.49, 21.02, 31.89, 15.92, 43.86, 10.92, 31.89, 5.9, 26.26, 1.4, 15.74, 2.1, 11.3, 4, 7.4, 7.1, 4.2, 11, 2.1, 16, 1.14];

function initMap() {
  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: 13,
    center: {
      lat: 59.325,
      lng: 18.070
    }
  });
  var markerOption = {
    latitude: 59.327,
    longitude: 18.067,
    color: "#" + "000",
    text: "ha"
  };
  marker = createMarker(markerOption);
  marker.setMap(map);
  marker.addListener('click', changeColorAndText);
};

function changeColorAndText() {
  var iconTmpObj = createSvgIcon( "#c00", "ok" );
  marker.setOptions( {
                icon: iconTmpObj
            } );
};

function createMarker(options) {
  //IE MarkerShape has problem
  var markerObj = new google.maps.Marker({
    icon: createSvgIcon(options.color, options.text),
    position: {
      lat: parseFloat(options.latitude),
      lng: parseFloat(options.longitude)
    },
    draggable: false,
    visible: true,
    zIndex: 10,
    shape: {
      coords: CustomShapeCoords,
      type: 'poly'
    }
  });

  return markerObj;
};

function createSvgIcon(color, text) {
  var div = $("<div></div>");

  var svg = $(
    '<svg width="32px" height="43px"  viewBox="0 0 32 43" xmlns="http://www.w3.org/2000/svg">' +
    '<path style="fill:#FFFFFF;stroke:#020202;stroke-width:1;stroke-miterlimit:10;" d="M30.6,15.737c0-8.075-6.55-14.6-14.6-14.6c-8.075,0-14.601,6.55-14.601,14.6c0,4.149,1.726,7.875,4.5,10.524c1.8,1.801,4.175,4.301,5.025,5.625c1.75,2.726,5,11.976,5,11.976s3.325-9.25,5.1-11.976c0.825-1.274,3.05-3.6,4.825-5.399C28.774,23.813,30.6,20.012,30.6,15.737z"/>' +
    '<circle style="fill:' + color + ';" cx="16" cy="16" r="11"/>' +
    '<text x="16" y="20" text-anchor="middle" style="font-size:10px;fill:#FFFFFF;">' + text + '</text>' +
    '</svg>'
  );
  div.append(svg);

  var dd = $("<canvas height='50px' width='50px'></cancas>");

  var svgHtml = div[0].innerHTML;

  canvg(dd[0], svgHtml);

  var imgSrc = dd[0].toDataURL("image/png");
  //"scaledSize" and "optimized: false" together seems did the tricky ---IE11  &&  viewBox influent IE scaledSize
  //var svg = '<svg width="32px" height="43px"  viewBox="0 0 32 43" xmlns="http://www.w3.org/2000/svg">'
  //    + '<path style="fill:#FFFFFF;stroke:#020202;stroke-width:1;stroke-miterlimit:10;" d="M30.6,15.737c0-8.075-6.55-14.6-14.6-14.6c-8.075,0-14.601,6.55-14.601,14.6c0,4.149,1.726,7.875,4.5,10.524c1.8,1.801,4.175,4.301,5.025,5.625c1.75,2.726,5,11.976,5,11.976s3.325-9.25,5.1-11.976c0.825-1.274,3.05-3.6,4.825-5.399C28.774,23.813,30.6,20.012,30.6,15.737z"/>'
  //    + '<circle style="fill:' + color + ';" cx="16" cy="16" r="11"/>'
  //    + '<text x="16" y="20" text-anchor="middle" style="font-size:10px;fill:#FFFFFF;">' + text + '</text>'
  //    + '</svg>';
  //var imgSrc = 'data:image/svg+xml;charset=UTF-8,' + encodeURIComponent(svg);

  var iconObj = {
    size: new google.maps.Size(32, 43),
    url: imgSrc,
    scaledSize: new google.maps.Size(32, 43)
  };

  return iconObj;
};

<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <title>Your Custom Marker </title>
  <style>
    /* Always set the map height explicitly to define the size of the div
       * element that contains the map. */
    #map {
      height: 100%;
    }
    /* Optional: Makes the sample page fill the window. */
    html,
    body {
      height: 100%;
      margin: 0;
      padding: 0;
    }
  </style>
</head>

<body>
  <div id="map"></div>
    <script src="https://canvg.github.io/canvg/canvg.js"></script>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
    <script async defer src="https://maps.googleapis.com/maps/api/js?callback=initMap"></script>
</body>

</html>

IE 11中不会显示自定义SVG标记

3 个答案: