Question

我有这个html / javascript文件可以正常工作：

<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
var geocoder = new google.maps.Geocoder();

function geocodePosition(pos) {
  geocoder.geocode({
    latLng: pos
  }, function(responses) {
    if (responses && responses.length > 0) {
      updateMarkerAddress(responses[0].formatted_address);
    } else {
      updateMarkerAddress('Cannot determine address at this location.');
    }
  });
}

function updateMarkerStatus(str) {
  document.getElementById('markerStatus').innerHTML = str;
}

function updateMarkerPosition(latLng) {
  document.getElementById('info').innerHTML = [
    latLng.lat(),
    latLng.lng()
  ].join(', ');
}

function updateMarkerAddress(str) {
  document.getElementById('address').innerHTML = str;
}

function initialize() {
  var latLng = new google.maps.LatLng(40.767367, -111.848007);
  var map = new google.maps.Map(document.getElementById('mapCanvas'), {
    zoom: 8,
    center: latLng,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  });
  var marker = new google.maps.Marker({
    position: latLng,
    title: 'Point A',
    map: map,
    draggable: true
  });

  // Update current position info.
  updateMarkerPosition(latLng);
  geocodePosition(latLng);

  // Add dragging event listeners.
  google.maps.event.addListener(marker, 'dragstart', function() {
    updateMarkerAddress('Dragging...');
  });

  google.maps.event.addListener(marker, 'drag', function() {
    updateMarkerStatus('Dragging...');
    updateMarkerPosition(marker.getPosition());
  });

  google.maps.event.addListener(marker, 'dragend', function() {
    updateMarkerStatus('Drag ended');
    geocodePosition(marker.getPosition());
  });
}

// Onload handler to fire off the app.
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
  <style>
  #mapCanvas {

    # width: 1000px;
    width: 102%;
    height: 500px;
    float: left;
    margin-left: -7px;
    margin-right: -10px;
    margin-top: -7px;
    margin-bottom: 10px;
  }
  #infoPanel {
    float: center;
    margin-left: 20px;
  }
  #infoPanel div {
    margin-bottom: 10px;
  }
  </style>

      <font size="3" color="black" face="verdana">
  <div id="mapCanvas"></div>
  <div id="infoPanel">
    <font size="-10" color="white" face="verdana">
    <!-- <b>Marker status:</b> -->
    <div id="markerStatus"><i>Click and drag the marker.</i></div>
    <font size="3" color="black" face="verdana">
    <b>Current position:</b>
    <div id="info"></div>
    <b>Closest matching address:</b>
    <div id="address"></div>
  </div>
</body>
</html>

当用户移动标记时，它会更新标记的位置。但是，我还希望在同一个地图上显示一些标记，而不是可移动的，对应于用户输入的某些元素的位置。我将这个html / javacsript代码包含在一个更大的Python函数中。我有这个其他的javascript代码，但它不包含可移动标记的部分。在这种情况下，使用PyQt5，用户可以将从Python传递的标记（带有runJavaScript()）新标记的坐标添加到javascript代码中的函数addMarker()中：

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=yes" />
<style type="text/css">
  html { height: 100% }
  body { height: 100%; margin: 0px; padding: 0px }
  #map_canvas { height: 100% }
</style>
<script type="text/javascript"
  src="http://maps.google.com/maps/api/js?sensor=false">
</script>
<script type="text/javascript">
var map;
function initialize() {
    var latlng = new google.maps.LatLng(40.767367, -111.848007);
    var myOptions = {
                    zoom: 8,
                    center: latlng,
                    mapTypeId: google.maps.MapTypeId.ROADMAP
                    };
     map = new google.maps.Map(document.getElementById("map_canvas"),
                               myOptions);
 }

var goldStar = {
    path: 'M 125,5 155,90 245,90 175,145 200,230 125,180 50,230 75,145 5,90 95,90 z',
    fillColor: 'yellow',
    fillOpacity: 0.8,
    scale: 0.1,
    strokeColor: 'gold',
    strokeWeight: 1
  };

function addMarker(lat, lon, city, url) {
    var newmarker = new google.maps.Marker({
        position: new google.maps.LatLng(lat, lon),
        //icon: {path: google.maps.SymbolPath.BACKWARD_CLOSED_ARROW,
               // scale: 5},
        icon: goldStar,
        map: map,
        title: city
    });

    newmarker['infowindow'] = new google.maps.InfoWindow({
            content: url
        });

    google.maps.event.addListener(newmarker, 'click', function() {
        this['infowindow'].open(map, this);
    });
}



</script>
</head>
<body onload="initialize();">
    <div id="map_canvas" style="width:100%; height:100%"></div>
</body>
</html>
''')

如何合并这两个文件？基本上，我怎么能在同一张地图上：

用户可以在地图上移动的标记
用户通过Python输入的一堆其他稳定标记（在PyQt5中使用runJavaScript()）

我可以从一开始就在html页面中设置稳定标记列表，因为用户可以决定它们的位置。

Answer 1

addMarker无效的原因是它无法访问map中创建的initialize对象。所以你需要map全局：

var geocoder = new google.maps.Geocoder();
var map;
...

function addMarker(lat, lon, city, url) {
    var newmarker = new google.maps.Marker({
        position: new google.maps.LatLng(lat, lon),
        map: map,
        title: city
    });
    newmarker['infowindow'] = new google.maps.InfoWindow({
            content: url
        });
    google.maps.event.addListener(newmarker, 'click', function() {
        this['infowindow'].open(map, this);
    });
}

function initialize() {
  var latLng = new google.maps.LatLng(40.767367, -111.848007);
  // create as a global variable
  map = new google.maps.Map(document.getElementById('mapCanvas'), {
    zoom: 8,
    center: latLng,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  });
  ...
}

在尝试从PyQt运行任何javascript之前，您还应该等到页面完全加载。因此，将一个插槽连接到loadFinished信号，并使用单次定时器添加一些额外的延迟（以允许加载谷歌地图控件）：

class ShowMap_fun(QMainWindow):
    def __init__(self):
        super().__init__()
        self.map_ui = Ui_tmy3page()
        self.map_ui.setupUi(self)
        # wait for page to load
        self.map_ui.html_code.loadFinished.connect(self.onLoad)
        self.map_ui.html_code.load(QtCore.QUrl.fromLocalFile('/tmp/test.html'))
        self.map_ui.show_stat.clicked.connect(self.save_fun)
        self.map_ui.html_code.page().profile().downloadRequested.connect(_downloadRequested)

    def onLoad(self):
        # extra one second delay
        QtCore.QTimer.singleShot(1000, self.save_fun)

如何合并这两个html / javascript文件

1 个答案: