You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
87 lines
2.8 KiB
87 lines
2.8 KiB
2 years ago
|
L.TileLayer.BetterWMS = L.TileLayer.WMS.extend({
|
||
|
|
||
|
onAdd: function (map) {
|
||
|
// Triggered when the layer is added to a map.
|
||
|
// Register a click listener, then do all the upstream WMS things
|
||
|
L.TileLayer.WMS.prototype.onAdd.call(this, map);
|
||
|
map.on('click', this.getFeatureInfo, this);
|
||
|
},
|
||
|
|
||
|
onRemove: function (map) {
|
||
|
// Triggered when the layer is removed from a map.
|
||
|
// Unregister a click listener, then do all the upstream WMS things
|
||
|
L.TileLayer.WMS.prototype.onRemove.call(this, map);
|
||
|
map.off('click', this.getFeatureInfo, this);
|
||
|
},
|
||
|
|
||
|
getFeatureInfo: function (evt) {
|
||
|
// Make an AJAX request to the server and hope for the best
|
||
|
var url = this.getFeatureInfoUrl(evt.latlng),
|
||
|
showResults = L.Util.bind(this.showGetFeatureInfo, this);
|
||
|
$.ajax({
|
||
|
url: url,
|
||
|
success: function (data, status, xhr) {
|
||
|
var err = typeof data === 'string' ? null : data;
|
||
|
showResults(err, evt.latlng, data);
|
||
|
},
|
||
|
error: function (xhr, status, error) {
|
||
|
showResults(error);
|
||
|
}
|
||
|
});
|
||
|
},
|
||
|
|
||
|
getFeatureInfoUrl: function (latlng) {
|
||
|
// Construct a GetFeatureInfo request URL given a point
|
||
|
var point = this._map.latLngToContainerPoint(latlng, this._map.getZoom()),
|
||
|
size = this._map.getSize(),
|
||
|
|
||
|
params = {
|
||
|
request: 'GetFeatureInfo',
|
||
|
service: 'WMS',
|
||
|
srs: 'EPSG:4326',
|
||
|
styles: this.wmsParams.styles,
|
||
|
transparent: this.wmsParams.transparent,
|
||
|
version: this.wmsParams.version,
|
||
|
format: this.wmsParams.format,
|
||
|
bbox: this._map.getBounds().toBBoxString(),
|
||
|
height: size.y,
|
||
|
width: size.x,
|
||
|
layers: this.wmsParams.layers,
|
||
|
query_layers: this.wmsParams.layers,
|
||
|
info_format: 'application/json' //'text/html'
|
||
|
};
|
||
|
|
||
|
// To solve the bug of incorrect X and Y
|
||
|
const X = point.x.toFixed();
|
||
|
const Y = point.y.toFixed();
|
||
|
|
||
|
params[params.version === '1.3.0' ? 'i' : 'x'] = X //point.x;
|
||
|
params[params.version === '1.3.0' ? 'j' : 'y'] = Y //point.y;
|
||
|
|
||
|
return this._url + L.Util.getParamString(params, this._url, true);
|
||
|
},
|
||
|
|
||
|
showGetFeatureInfo: function (err, latlng, content) {
|
||
|
if (err) { console.log(err); return; } // do nothing if there's an error
|
||
|
|
||
|
|
||
|
const properties = JSON.parse(content).features[0].properties;
|
||
|
console.debug('betterwms properties: ', properties);
|
||
|
// if belongs to grid layer treat it as an entity
|
||
|
if (properties.hasOwnProperty('cellcode')) {
|
||
|
moreInfoPopup(properties);
|
||
|
} else {
|
||
|
mruPopup(properties);
|
||
|
}
|
||
|
// Otherwise show the content in a popup, or something.
|
||
|
// L.popup({ maxWidth: 800})
|
||
|
// .setLatLng(latlng)
|
||
|
// .setContent('placeholder')
|
||
|
// .openOn(this._map);
|
||
|
}
|
||
|
});
|
||
|
|
||
|
L.tileLayer.betterWms = function (url, options) {
|
||
|
return new L.TileLayer.BetterWMS(url, options);
|
||
|
};
|