leaflet
Version:
JavaScript library for mobile-friendly interactive maps
85 lines (60 loc) • 1.96 kB
JavaScript
/*
* L.TileLayer.WMS is used for WMS tile layers.
*/
L.TileLayer.WMS = L.TileLayer.extend({
defaultWmsParams: {
service: 'WMS',
request: 'GetMap',
version: '1.1.1',
layers: '',
styles: '',
format: 'image/jpeg',
transparent: false
},
options: {
crs: null,
uppercase: false
},
initialize: function (url, options) {
this._url = url;
var wmsParams = L.extend({}, this.defaultWmsParams);
// all keys that are not TileLayer options go to WMS params
for (var i in options) {
if (!(i in this.options)) {
wmsParams[i] = options[i];
}
}
options = L.setOptions(this, options);
wmsParams.width = wmsParams.height = options.tileSize * (options.detectRetina && L.Browser.retina ? 2 : 1);
this.wmsParams = wmsParams;
},
onAdd: function (map) {
this._crs = this.options.crs || map.options.crs;
this._wmsVersion = parseFloat(this.wmsParams.version);
var projectionKey = this._wmsVersion >= 1.3 ? 'crs' : 'srs';
this.wmsParams[projectionKey] = this._crs.code;
L.TileLayer.prototype.onAdd.call(this, map);
},
getTileUrl: function (coords) {
var tileBounds = this._tileCoordsToBounds(coords),
nw = this._crs.project(tileBounds.getNorthWest()),
se = this._crs.project(tileBounds.getSouthEast()),
bbox = (this._wmsVersion >= 1.3 && this._crs === L.CRS.EPSG4326 ?
[se.y, nw.x, nw.y, se.x] :
[nw.x, se.y, se.x, nw.y]).join(','),
url = L.TileLayer.prototype.getTileUrl.call(this, coords);
return url +
L.Util.getParamString(this.wmsParams, url, this.options.uppercase) +
(this.options.uppercase ? '&BBOX=' : '&bbox=') + bbox;
},
setParams: function (params, noRedraw) {
L.extend(this.wmsParams, params);
if (!noRedraw) {
this.redraw();
}
return this;
}
});
L.tileLayer.wms = function (url, options) {
return new L.TileLayer.WMS(url, options);
};