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L.TileLayer.WMS = L.TileLayer.extend({
defaultWmsParams: {
service: 'WMS',
request: 'GetMap',
version: '1.1.1',
layers: '',
styles: '',
format: 'image/jpeg',
transparent: false
},
initialize: function(/*String*/ url, /*Object*/ options) {
this._url = url;
this.wmsParams = L.Util.extend({}, this.defaultWmsParams);
this.wmsParams.width = this.wmsParams.height = this.options.tileSize;
for (var i in options) {
// all keys that are not TileLayer options go to WMS params
if (!this.options.hasOwnProperty(i)) {
this.wmsParams[i] = options[i];
}
}
L.Util.setOptions(this, options);
},
onAdd: function(map) {
var projectionKey = (parseFloat(this.wmsParams.version) >= 1.3 ? 'crs' : 'srs');
this.wmsParams[projectionKey] = map.options.crs.code;
L.TileLayer.prototype.onAdd.call(this, map);
},
getTileUrl: function(/*Point*/ tilePoint, /*Number*/ zoom)/*-> String*/ {
var tileSize = this.options.tileSize,
nwPoint = tilePoint.multiplyBy(tileSize),
sePoint = nwPoint.add(new L.Point(tileSize, tileSize)),
nwMap = this._map.unproject(nwPoint, this._zoom, true),
seMap = this._map.unproject(sePoint, this._zoom, true),
nw = this._map.options.crs.project(nwMap),
se = this._map.options.crs.project(seMap),
bbox = [nw.x, se.y, se.x, nw.y].join(',');
return this._url + L.Util.getParamString(this.wmsParams) + "&bbox=" + bbox;
}
});
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