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Implemented L.TileLayer.WMS (EPSG:3857 only), fixes #50

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This commit is contained in:
Mourner 2011-05-16 19:40:49 +03:00
parent 427878bdca
commit 5a45784d6a
6 changed files with 119 additions and 8 deletions
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1
build/build.bat
View File

@ -21,6 +21,7 @@ java -jar ../lib/closure-compiler/compiler.jar ^
--js ../src/geo/LatLngBounds.js ^ --js ../src/geo/LatLngBounds.js ^
--js ../src/geo/Projection.js ^ --js ../src/geo/Projection.js ^
--js ../src/layer/TileLayer.js ^ --js ../src/layer/TileLayer.js ^
--js ../src/layer/TileLayer.WMS.js ^
--js ../src/layer/ImageOverlay.js ^ --js ../src/layer/ImageOverlay.js ^
--js ../src/layer/Popup.js ^ --js ../src/layer/Popup.js ^
--js ../src/layer/marker/Icon.js ^ --js ../src/layer/marker/Icon.js ^

6
build/deps.js
View File

@ -23,6 +23,12 @@ var deps = {
heading: 'Layers' heading: 'Layers'
}, },
TileLayerWMS: {
src: ['layer/TileLayer.WMS.js'],
desc: 'WMS tile layer, currently only supports EPSG:3857.',
deps: 'TileLayer'
},
ImageOverlay: { ImageOverlay: {
src: ['layer/ImageOverlay.js'], src: ['layer/ImageOverlay.js'],
desc: 'Used to display an image over a particular rectangular area of the map.' desc: 'Used to display an image over a particular rectangular area of the map.'

1
debug/include.js
View File

@ -28,6 +28,7 @@
'geo/Projection.js', 'geo/Projection.js',
'layer/TileLayer.js', 'layer/TileLayer.js',
'layer/TileLayer.WMS.js',
'layer/ImageOverlay.js', 'layer/ImageOverlay.js',
'layer/Popup.js', 'layer/Popup.js',

36
debug/map/wms.html Normal file
View File

@ -0,0 +1,36 @@
<!DOCTYPE html>
<html>
<head>
<title>Leaflet debug page</title>
<link rel="stylesheet" href="../../dist/leaflet.css" />
<!--[if lte IE 8]><link rel="stylesheet" href="../../dist/leaflet.ie.css" /><![endif]-->
<link rel="stylesheet" href="../css/screen.css" />
<script src="../include.js"></script>
</head>
<body>
<div id="map" style="width: 800px; height: 600px; border: 1px solid #ccc"></div>
<script type="text/javascript">
var map = new L.Map('map');
var cloudmadeUrl = 'http://{s}.tile.cloudmade.com/BC9A493B41014CAABB98F0471D759707/997/256/{z}/{x}/{y}.png',
cloudmadeAttribution = 'Map data &copy; 2011 OpenStreetMap contributors, Imagery &copy; 2011 CloudMade',
cloudmade = new L.TileLayer(cloudmadeUrl, {maxZoom: 18, attribution: cloudmadeAttribution});
var nexrad = new L.TileLayer.WMS("http://mesonet.agron.iastate.edu/cgi-bin/wms/nexrad/n0r.cgi", {
layers: 'nexrad-n0r-900913',
format: 'image/png',
transparent: true,
attribution: "Weather data &copy; 2011 IEM Nexrad"
});
var bounds = new L.LatLngBounds(new L.LatLng(32, -126), new L.LatLng(50, -64));
map.addLayer(cloudmade).addLayer(nexrad).fitBounds(bounds);
</script>
</body>
</html>

18
dist/leaflet.js vendored
View File

@ -3,7 +3,7 @@
Leaflet is a BSD-licensed JavaScript library for map display and interaction. Leaflet is a BSD-licensed JavaScript library for map display and interaction.
See http://cloudmade.github.com/Leaflet/ for more information. See http://cloudmade.github.com/Leaflet/ for more information.
*/ */
var L={VERSION:"0.1",ROOT_URL:function(){for(var a=document.getElementsByTagName("script"),b=0,c=a.length;b<c;b++){var d=a[b].src;if((d=d&&d.match(/^(.*\/)leaflet-*\w*\.js.*$/))&&d[1])return d[1]}return"../../dist/"}(),noConflict:function(){L=this._originalL;return this},_originalL:L};L.Util={extend:function(a){for(var b=Array.prototype.slice.call(arguments,1),c=0,d=b.length,e;c<d;c++)for(var f in e=b[c]||{},e)e.hasOwnProperty(f)&&(a[f]=e[f]);return a},bind:function(a,b){return function(){return a.apply(b,arguments)}},stamp:function(){var a=0;return function(b){b._leaflet_id=b._leaflet_id||++a;return b._leaflet_id}}(),limitExecByInterval:function(a,b,c){function d(){e=!1;f&&(g.callee.apply(c,g),f=!1)}var e,f,g;return function(){g=arguments;e?f=!0:(e=!0,setTimeout(d,b),a.apply(c, var L={VERSION:"0.2",ROOT_URL:function(){for(var a=document.getElementsByTagName("script"),b=0,c=a.length;b<c;b++){var d=a[b].src;if((d=d&&d.match(/^(.*\/)leaflet-*\w*\.js.*$/))&&d[1])return d[1]}return"../../dist/"}(),noConflict:function(){L=this._originalL;return this},_originalL:L};L.Util={extend:function(a){for(var b=Array.prototype.slice.call(arguments,1),c=0,d=b.length,e;c<d;c++)for(var f in e=b[c]||{},e)e.hasOwnProperty(f)&&(a[f]=e[f]);return a},bind:function(a,b){return function(){return a.apply(b,arguments)}},stamp:function(){var a=0;return function(b){b._leaflet_id=b._leaflet_id||++a;return b._leaflet_id}}(),limitExecByInterval:function(a,b,c){function d(){e=!1;f&&(g.callee.apply(c,g),f=!1)}var e,f,g;return function(){g=arguments;e?f=!0:(e=!0,setTimeout(d,b),a.apply(c,
g))}},deferExecByInterval:function(a,b,c){function d(){f=!1;a.apply(c,e)}var e,f;return function(){e=arguments;f||(f=!0,setTimeout(d,b))}},falseFn:function(){return!1},formatNum:function(a,b){var c=Math.pow(10,b||5);return Math.round(a*c)/c},setOptions:function(a,b){a.options=L.Util.extend({},a.options,b)}};L.Class=function(){}; g))}},deferExecByInterval:function(a,b,c){function d(){f=!1;a.apply(c,e)}var e,f;return function(){e=arguments;f||(f=!0,setTimeout(d,b))}},falseFn:function(){return!1},formatNum:function(a,b){var c=Math.pow(10,b||5);return Math.round(a*c)/c},setOptions:function(a,b){a.options=L.Util.extend({},a.options,b)}};L.Class=function(){};
L.Class.extend=function(a){var b=function(){!L.Class._prototyping&&this.initialize&&this.initialize.apply(this,arguments)};L.Class._prototyping=!0;var c=new this;L.Class._prototyping=!1;c.constructor=b;b.prototype=c;c.superclass=this.prototype;a.statics&&(L.Util.extend(b,a.statics),delete a.statics);a.includes&&(L.Util.extend.apply(null,[c].concat(a.includes)),delete a.includes);if(a.options&&c.options)a.options=L.Util.extend({},c.options,a.options);L.Util.extend(c,a);b.extend=arguments.callee;b.include= L.Class.extend=function(a){var b=function(){!L.Class._prototyping&&this.initialize&&this.initialize.apply(this,arguments)};L.Class._prototyping=!0;var c=new this;L.Class._prototyping=!1;c.constructor=b;b.prototype=c;c.superclass=this.prototype;a.statics&&(L.Util.extend(b,a.statics),delete a.statics);a.includes&&(L.Util.extend.apply(null,[c].concat(a.includes)),delete a.includes);if(a.options&&c.options)a.options=L.Util.extend({},c.options,a.options);L.Util.extend(c,a);b.extend=arguments.callee;b.include=
function(a){L.Util.extend(this.prototype,a)};for(var d in this)this.hasOwnProperty(d)&&d!="prototype"&&(b[d]=this[d]);return b};L.Mixin={}; function(a){L.Util.extend(this.prototype,a)};for(var d in this)this.hasOwnProperty(d)&&d!="prototype"&&(b[d]=this[d]);return b};L.Mixin={};
@ -37,7 +37,9 @@ this._update):this._map.off("move",this._limitedUpdate)},getAttribution:function
b),Math.floor(a.max.y/b));c=new L.Bounds(c,a);this._loadTilesFromCenterOut(c);this.options.unloadInvisibleTiles&&this._unloadOtherTiles(c)},getTileUrl:function(a,b){return this._url.replace("{s}",this.options.subdomains[(a.x+a.y)%this.options.subdomains.length]).replace("{z}",b).replace("{x}",a.x).replace("{y}",a.y)},_loadTilesFromCenterOut:function(a){for(var b=[],c=a.getCenter(),d=a.min.y;d<=a.max.y;d++)for(var e=a.min.x;e<=a.max.x;e++)e+":"+d in this._tiles||b.push(new L.Point(e,d));b.sort(function(a, b),Math.floor(a.max.y/b));c=new L.Bounds(c,a);this._loadTilesFromCenterOut(c);this.options.unloadInvisibleTiles&&this._unloadOtherTiles(c)},getTileUrl:function(a,b){return this._url.replace("{s}",this.options.subdomains[(a.x+a.y)%this.options.subdomains.length]).replace("{z}",b).replace("{x}",a.x).replace("{y}",a.y)},_loadTilesFromCenterOut:function(a){for(var b=[],c=a.getCenter(),d=a.min.y;d<=a.max.y;d++)for(var e=a.min.x;e<=a.max.x;e++)e+":"+d in this._tiles||b.push(new L.Point(e,d));b.sort(function(a,
b){return a.distanceTo(c)-b.distanceTo(c)});this._tilesToLoad=b.length;a=0;for(d=this._tilesToLoad;a<d;a++)this._loadTile(b[a])},_unloadOtherTiles:function(a){var b,c,d;for(d in this._tiles)if(this._tiles.hasOwnProperty(d)&&(b=d.split(":"),c=parseInt(b[0],10),b=parseInt(b[1],10),c<a.min.x||c>a.max.x||b<a.min.y||b>a.max.y))this._tiles[d].parentNode==this._container&&this._container.removeChild(this._tiles[d]),delete this._tiles[d]},_loadTile:function(a){var b=this._map.getPixelOrigin();b=a.multiplyBy(this.options.tileSize).subtract(b); b){return a.distanceTo(c)-b.distanceTo(c)});this._tilesToLoad=b.length;a=0;for(d=this._tilesToLoad;a<d;a++)this._loadTile(b[a])},_unloadOtherTiles:function(a){var b,c,d;for(d in this._tiles)if(this._tiles.hasOwnProperty(d)&&(b=d.split(":"),c=parseInt(b[0],10),b=parseInt(b[1],10),c<a.min.x||c>a.max.x||b<a.min.y||b>a.max.y))this._tiles[d].parentNode==this._container&&this._container.removeChild(this._tiles[d]),delete this._tiles[d]},_loadTile:function(a){var b=this._map.getPixelOrigin();b=a.multiplyBy(this.options.tileSize).subtract(b);
var c=this._map.getZoom(),d=1<<c;a.x=(a.x%d+d)%d;if(!(a.y<0||a.y>=d))d=this._tileImg.cloneNode(!1),L.DomUtil.setPosition(d,b),this._tiles[a.x+":"+a.y]=d,d._leaflet_layer=this,d.onload=this._tileOnLoad,d.onerror=this._tileOnError,d.onselectstart=d.onmousemove=L.Util.falseFn,d.src=this.getTileUrl(a,c),this._container.appendChild(d)},_tileOnLoad:function(){this.className+=" leaflet-tile-loaded";var a=this._leaflet_layer;a.fire("tileload",{tile:this,url:this.src});a._tilesToLoad--;a._tilesToLoad||a.fire("load")}, var c=this._map.getZoom(),d=1<<c;a.x=(a.x%d+d)%d;if(!(a.y<0||a.y>=d))d=this._tileImg.cloneNode(!1),L.DomUtil.setPosition(d,b),this._tiles[a.x+":"+a.y]=d,d._leaflet_layer=this,d.onload=this._tileOnLoad,d.onerror=this._tileOnError,d.onselectstart=d.onmousemove=L.Util.falseFn,d.src=this.getTileUrl(a,c),this._container.appendChild(d)},_tileOnLoad:function(){this.className+=" leaflet-tile-loaded";var a=this._leaflet_layer;a.fire("tileload",{tile:this,url:this.src});a._tilesToLoad--;a._tilesToLoad||a.fire("load")},
_tileOnError:function(){this._leaflet_layer.fire("tileerror",{tile:this,url:this.src});var a=this._leaflet_layer.options.errorTileUrl;if(a)this.src=a}});L.ImageOverlay=L.Class.extend({includes:L.Mixin.Events,initialize:function(a,b){this._url=a;this._bounds=b},onAdd:function(a){this._map=a;this._image=L.DomUtil.create("img","leaflet-image-layer");this._image.style.visibility="hidden";L.Util.extend(this._image,{galleryimg:"no",onselectstart:L.Util.falseFn,onmousemove:L.Util.falseFn,onload:this._onImageLoad,src:this._url});this._map.getPanes().overlayPane.appendChild(this._image);this._map.on("viewreset",this._reset,this);this._reset()},_reset:function(){var a= _tileOnError:function(){this._leaflet_layer.fire("tileerror",{tile:this,url:this.src});var a=this._leaflet_layer.options.errorTileUrl;if(a)this.src=a}});L.TileLayer.WMS=L.TileLayer.extend({defaultWmsParams:{version:"1.1.1",layers:"",styles:"",format:"image/jpeg",transparent:!1},initialize:function(a,b){this._url=a;L.Util.setOptions(this,b);var c=this.options.tileSize;this.wmsParams=L.Util.extend({service:"WMS",request:"GetMap",width:c,height:c},this.defaultWmsParams);for(var d in b)this.defaultWmsParams.hasOwnProperty(d)&&(this.wmsParams[d]=b[d]);this.wmsParams[parseFloat(this.wmsParams.version)>=1.3?"crs":"srs"]="EPSG:3857"},getTileUrl:function(a,
b){var c=this.options.tileSize,d=a.multiplyBy(c);c=d.add(new L.Point(c,c));d=this._map.unproject(d,b,!0);c=this._map.unproject(c,b,!0);d=this._latlngToSphericalMerc(d);c=this._latlngToSphericalMerc(c);d=[d.x,c.y,c.x,d.y].join(",");return this._url+this._getParamsStr()+"&bbox="+d},_latlngToSphericalMerc:function(a){var b=L.LatLng.DEG_TO_RAD,c=Math.sin(a.lat*b);return new L.Point(6378137*a.lng*b,3189068.5*Math.log((1+c)/(1-c)))},_getParamsStr:function(){var a=[],b;for(b in this.wmsParams)this.wmsParams.hasOwnProperty(b)&&
a.push(b+"="+this.wmsParams[b]);return"?"+a.join("&")}});L.ImageOverlay=L.Class.extend({includes:L.Mixin.Events,initialize:function(a,b){this._url=a;this._bounds=b},onAdd:function(a){this._map=a;this._image=L.DomUtil.create("img","leaflet-image-layer");this._image.style.visibility="hidden";L.Util.extend(this._image,{galleryimg:"no",onselectstart:L.Util.falseFn,onmousemove:L.Util.falseFn,onload:this._onImageLoad,src:this._url});this._map.getPanes().overlayPane.appendChild(this._image);this._map.on("viewreset",this._reset,this);this._reset()},_reset:function(){var a=
this._map.latLngToLayerPoint(this._bounds.getNorthWest()),b=this._map.latLngToLayerPoint(this._bounds.getSouthEast()).subtract(a);L.DomUtil.setPosition(this._image,a);this._image.style.width=b.x+"px";this._image.style.height=b.y+"px"},_onImageLoad:function(){this.style.visibility=""}});L.Popup=L.Class.extend({includes:L.Mixin.Events,options:{maxWidth:300,autoPan:!0,closeButton:!0,offset:new L.Point(0,2),autoPanPadding:new L.Point(5,5)},initialize:function(a){L.Util.setOptions(this,a)},onAdd:function(a){this._map=a;this._container||this._initLayout();this._updateContent();this._container.style.opacity="0";this._map._panes.popupPane.appendChild(this._container);this._map.on("viewreset",this._updatePosition,this);if(this._map.options.closePopupOnClick)this._map.on("preclick",this._close, this._map.latLngToLayerPoint(this._bounds.getNorthWest()),b=this._map.latLngToLayerPoint(this._bounds.getSouthEast()).subtract(a);L.DomUtil.setPosition(this._image,a);this._image.style.width=b.x+"px";this._image.style.height=b.y+"px"},_onImageLoad:function(){this.style.visibility=""}});L.Popup=L.Class.extend({includes:L.Mixin.Events,options:{maxWidth:300,autoPan:!0,closeButton:!0,offset:new L.Point(0,2),autoPanPadding:new L.Point(5,5)},initialize:function(a){L.Util.setOptions(this,a)},onAdd:function(a){this._map=a;this._container||this._initLayout();this._updateContent();this._container.style.opacity="0";this._map._panes.popupPane.appendChild(this._container);this._map.on("viewreset",this._updatePosition,this);if(this._map.options.closePopupOnClick)this._map.on("preclick",this._close,
this);this._update();this._container.style.opacity="1";this._opened=!0},onRemove:function(a){a._panes.popupPane.removeChild(this._container);a.off("viewreset",this._updatePosition,this);a.off("click",this._close,this);this._container.style.opacity="0";this._opened=!1},setLatLng:function(a){this._latlng=a;this._opened&&this._update();return this},setContent:function(a){this._content=a;this._opened&&this._update();return this},_close:function(){this._opened&&this._map.removeLayer(this)},_initLayout:function(){this._container= this);this._update();this._container.style.opacity="1";this._opened=!0},onRemove:function(a){a._panes.popupPane.removeChild(this._container);a.off("viewreset",this._updatePosition,this);a.off("click",this._close,this);this._container.style.opacity="0";this._opened=!1},setLatLng:function(a){this._latlng=a;this._opened&&this._update();return this},setContent:function(a){this._content=a;this._opened&&this._update();return this},_close:function(){this._opened&&this._map.removeLayer(this)},_initLayout:function(){this._container=
L.DomUtil.create("div","leaflet-popup");L.DomEvent.disableClickPropagation(this._container);this._closeButton=L.DomUtil.create("a","leaflet-popup-close-button",this._container);this._closeButton.href="#close";this._closeButton.onclick=L.Util.bind(this._onCloseButtonClick,this);this._wrapper=L.DomUtil.create("div","leaflet-popup-content-wrapper",this._container);this._contentNode=L.DomUtil.create("div","leaflet-popup-content",this._wrapper);this._tipContainer=L.DomUtil.create("div","leaflet-popup-tip-container", L.DomUtil.create("div","leaflet-popup");L.DomEvent.disableClickPropagation(this._container);this._closeButton=L.DomUtil.create("a","leaflet-popup-close-button",this._container);this._closeButton.href="#close";this._closeButton.onclick=L.Util.bind(this._onCloseButtonClick,this);this._wrapper=L.DomUtil.create("div","leaflet-popup-content-wrapper",this._container);this._contentNode=L.DomUtil.create("div","leaflet-popup-content",this._wrapper);this._tipContainer=L.DomUtil.create("div","leaflet-popup-tip-container",
@ -56,7 +58,7 @@ this),L.DomEvent.addListener(this._container,"mousedown",this._fireMouseEvent,th
L.Path=!L.Path.VML?L.Path:L.Path.extend({statics:{CLIP_PADDING:0.02},_createElement:function(){document.createStyleSheet().addRule(".lvml","behavior:url(#default#VML); display: inline-block; position: absolute;");try{return document.namespaces.add("lvml","urn:schemas-microsoft-com:vml"),function(a){return document.createElement("<lvml:"+a+' class="lvml">')}}catch(a){return function(a){return document.createElement("<"+a+' xmlns="urn:schemas-microsoft.com:vml" class="lvml">')}}}(),_initRoot:function(){if(!this._map._pathRoot)this._map._pathRoot= L.Path=!L.Path.VML?L.Path:L.Path.extend({statics:{CLIP_PADDING:0.02},_createElement:function(){document.createStyleSheet().addRule(".lvml","behavior:url(#default#VML); display: inline-block; position: absolute;");try{return document.namespaces.add("lvml","urn:schemas-microsoft-com:vml"),function(a){return document.createElement("<lvml:"+a+' class="lvml">')}}catch(a){return function(a){return document.createElement("<"+a+' xmlns="urn:schemas-microsoft.com:vml" class="lvml">')}}}(),_initRoot:function(){if(!this._map._pathRoot)this._map._pathRoot=
document.createElement("div"),this._map._pathRoot.className="leaflet-vml-container",this._map._panes.overlayPane.appendChild(this._map._pathRoot),this._map.on("moveend",this._updateViewport,this),this._updateViewport()},_initPath:function(){this._container=this._createElement("shape");this._container.className+=" leaflet-vml-shape";this._container.coordsize="1 1";this._path=this._createElement("path");this._container.appendChild(this._path);this._map._pathRoot.appendChild(this._container)},_initStyle:function(){this.options.stroke? document.createElement("div"),this._map._pathRoot.className="leaflet-vml-container",this._map._panes.overlayPane.appendChild(this._map._pathRoot),this._map.on("moveend",this._updateViewport,this),this._updateViewport()},_initPath:function(){this._container=this._createElement("shape");this._container.className+=" leaflet-vml-shape";this._container.coordsize="1 1";this._path=this._createElement("path");this._container.appendChild(this._path);this._map._pathRoot.appendChild(this._container)},_initStyle:function(){this.options.stroke?
(this._stroke=this._createElement("stroke"),this._stroke.endcap="round",this._container.appendChild(this._stroke)):this._container.stroked=!1;this.options.fill?(this._container.filled=!0,this._fill=this._createElement("fill"),this._container.appendChild(this._fill)):this._container.filled=!1;this._updateStyle()},_updateStyle:function(){if(this.options.stroke)this._stroke.weight=this.options.weight+"px",this._stroke.color=this.options.color,this._stroke.opacity=this.options.opacity;if(this.options.fill)this._fill.color= (this._stroke=this._createElement("stroke"),this._stroke.endcap="round",this._container.appendChild(this._stroke)):this._container.stroked=!1;this.options.fill?(this._container.filled=!0,this._fill=this._createElement("fill"),this._container.appendChild(this._fill)):this._container.filled=!1;this._updateStyle()},_updateStyle:function(){if(this.options.stroke)this._stroke.weight=this.options.weight+"px",this._stroke.color=this.options.color,this._stroke.opacity=this.options.opacity;if(this.options.fill)this._fill.color=
this.options.fillColor||this.options.color,this._fill.opacity=this.options.fillOpacity},_updatePath:function(){this._container.style.display="none";this._path.v=this.getPathString();this._container.style.display=""}});L.Path.include({bindPopup:function(a,b){this._popup=new L.Popup(b);this._popup.setContent(a);this.on("click",this._openPopup,this);return this},_openPopup:function(a){this._popup.setLatLng(a.latlng);this._map.openPopup(this._popup)}});L.Polyline=L.Path.extend({initialize:function(a,b){L.Path.prototype.initialize.call(this,b);this._latlngs=a},options:{smoothFactor:1,noClip:!1,updateOnMoveEnd:!0},projectLatlngs:function(){this._originalPoints=[];for(var a=0,b=this._latlngs.length;a<b;a++)this._originalPoints[a]=this._map.latLngToLayerPoint(this._latlngs[a])},getPathString:function(){for(var a=0,b=this._parts.length,c="";a<b;a++)c+=this._getPathPartStr(this._parts[a]);return c},_getPathPartStr:function(a){for(var b=L.Path.VML,c=0, this.options.fillColor||this.options.color,this._fill.opacity=this.options.fillOpacity},_updatePath:function(){this._container.style.display="none";this._path.v=this.getPathString()+" ";this._container.style.display=""}});L.Path.include({bindPopup:function(a,b){this._popup=new L.Popup(b);this._popup.setContent(a);this.on("click",this._openPopup,this);return this},_openPopup:function(a){this._popup.setLatLng(a.latlng);this._map.openPopup(this._popup)}});L.Polyline=L.Path.extend({initialize:function(a,b){L.Path.prototype.initialize.call(this,b);this._latlngs=a},options:{smoothFactor:1,noClip:!1,updateOnMoveEnd:!0},projectLatlngs:function(){this._originalPoints=[];for(var a=0,b=this._latlngs.length;a<b;a++)this._originalPoints[a]=this._map.latLngToLayerPoint(this._latlngs[a])},getPathString:function(){for(var a=0,b=this._parts.length,c="";a<b;a++)c+=this._getPathPartStr(this._parts[a]);return c},_getPathPartStr:function(a){for(var b=L.Path.VML,c=0,
d=a.length,e="",f;c<d;c++)f=a[c],b&&f._round(),e+=(c?"L":"M")+f.x+" "+f.y;return e},_clipPoints:function(){var a=this._originalPoints,b=a.length,c,d,e;if(this.options.noClip)this._parts=[a];else{var f=this._parts=[],g=this._map._pathViewport,h=L.LineUtil;for(d=c=0;c<b-1;c++)if(e=h.clipSegment(a[c],a[c+1],g,c))if(f[d]=f[d]||[],f[d].push(e[0]),e[1]!=a[c+1]||c==b-2)f[d].push(e[1]),d++}},_simplifyPoints:function(){for(var a=this._parts,b=L.LineUtil,c=0,d=a.length;c<d;c++)a[c]=b.simplify(a[c],this.options.smoothFactor)}, d=a.length,e="",f;c<d;c++)f=a[c],b&&f._round(),e+=(c?"L":"M")+f.x+" "+f.y;return e},_clipPoints:function(){var a=this._originalPoints,b=a.length,c,d,e;if(this.options.noClip)this._parts=[a];else{var f=this._parts=[],g=this._map._pathViewport,h=L.LineUtil;for(d=c=0;c<b-1;c++)if(e=h.clipSegment(a[c],a[c+1],g,c))if(f[d]=f[d]||[],f[d].push(e[0]),e[1]!=a[c+1]||c==b-2)f[d].push(e[1]),d++}},_simplifyPoints:function(){for(var a=this._parts,b=L.LineUtil,c=0,d=a.length;c<d;c++)a[c]=b.simplify(a[c],this.options.smoothFactor)},
_updatePath:function(){this._clipPoints();this._simplifyPoints();L.Path.prototype._updatePath.call(this)}});L.Polygon=L.Polyline.extend({options:{fill:!0},initialize:function(a,b){L.Polyline.prototype.initialize.call(this,a,b);if(a[0]instanceof Array)this._latlngs=a[0],this._holes=a.slice(1)},projectLatlngs:function(){L.Polyline.prototype.projectLatlngs.call(this);this._holePoints=[];if(this._holes)for(var a=0,b=this._holes.length;a<b;a++){this._holePoints[a]=[];for(var c=0,d=this._holes[a].length;c<d;c++)this._holePoints[a][c]=this._map.latLngToLayerPoint(this._holes[a][c])}},_clipPoints:function(){this._parts= _updatePath:function(){this._clipPoints();this._simplifyPoints();L.Path.prototype._updatePath.call(this)}});L.Polygon=L.Polyline.extend({options:{fill:!0},initialize:function(a,b){L.Polyline.prototype.initialize.call(this,a,b);if(a[0]instanceof Array)this._latlngs=a[0],this._holes=a.slice(1)},projectLatlngs:function(){L.Polyline.prototype.projectLatlngs.call(this);this._holePoints=[];if(this._holes)for(var a=0,b=this._holes.length;a<b;a++){this._holePoints[a]=[];for(var c=0,d=this._holes[a].length;c<d;c++)this._holePoints[a][c]=this._map.latLngToLayerPoint(this._holes[a][c])}},_clipPoints:function(){this._parts=
[this._originalPoints].concat(this._holePoints);if(!this.options.noClip)for(var a=0,b=this._parts.length;a<b;a++)this._parts[a]=L.PolyUtil.clipPolygon(this._parts[a],this._map._pathViewport)},_getPathPartStr:function(a){return L.Polyline.prototype._getPathPartStr.call(this,a)+(L.Path.SVG?"z":"x")}});L.Circle=L.Path.extend({initialize:function(a,b,c){L.Path.prototype.initialize.call(this,c);this._latlng=a;this._radius=b},options:{fill:!0},projectLatlngs:function(){this._point=this._map.latLngToLayerPoint(this._latlng)},getPathString:function(){var a=this._point,b=this._radius;return L.Path.SVG?"M"+a.x+","+(a.y-b)+"A"+b+","+b+",0,1,1,"+(a.x-0.1)+","+(a.y-b)+" z":(a._round(),b=Math.round(b),"AL "+a.x+","+a.y+" "+b+","+b+" 0,23592600")}});L.Handler=L.Class.extend({initialize:function(a){this._map=a},enabled:function(){return!!this._enabled}});L.Handler.MapDrag=L.Handler.extend({enable:function(){if(!this._enabled){if(!this._draggable)this._draggable=new L.Draggable(this._map._mapPane,this._map._container),this._draggable.on("dragstart",this._onDragStart,this),this._draggable.on("drag",this._onDrag,this),this._draggable.on("dragend",this._onDragEnd,this);this._draggable.enable();this._enabled=!0}},disable:function(){if(this._enabled)this._draggable.disable(),this._enabled=!1},moved:function(){return this._draggable._moved},_onDragStart:function(){this._map.fire("movestart"); [this._originalPoints].concat(this._holePoints);if(!this.options.noClip)for(var a=0,b=this._parts.length;a<b;a++)this._parts[a]=L.PolyUtil.clipPolygon(this._parts[a],this._map._pathViewport)},_getPathPartStr:function(a){return L.Polyline.prototype._getPathPartStr.call(this,a)+(L.Path.SVG?"z":"x")}});L.Circle=L.Path.extend({initialize:function(a,b,c){L.Path.prototype.initialize.call(this,c);this._latlng=a;this._radius=b},options:{fill:!0},projectLatlngs:function(){this._point=this._map.latLngToLayerPoint(this._latlng)},getPathString:function(){var a=this._point,b=this._radius;return L.Path.SVG?"M"+a.x+","+(a.y-b)+"A"+b+","+b+",0,1,1,"+(a.x-0.1)+","+(a.y-b)+" z":(a._round(),b=Math.round(b),"AL "+a.x+","+a.y+" "+b+","+b+" 0,23592600")}});L.Handler=L.Class.extend({initialize:function(a){this._map=a},enabled:function(){return!!this._enabled}});L.Handler.MapDrag=L.Handler.extend({enable:function(){if(!this._enabled){if(!this._draggable)this._draggable=new L.Draggable(this._map._mapPane,this._map._container),this._draggable.on("dragstart",this._onDragStart,this),this._draggable.on("drag",this._onDrag,this),this._draggable.on("dragend",this._onDragEnd,this);this._draggable.enable();this._enabled=!0}},disable:function(){if(this._enabled)this._draggable.disable(),this._enabled=!1},moved:function(){return this._draggable._moved},_onDragStart:function(){this._map.fire("movestart");
@ -81,11 +83,11 @@ this._container.clientHeight),this._sizeChanged=!1;return this._size},getPixelBo
containerPointToLayerPoint:function(a){return a.subtract(L.DomUtil.getPosition(this._mapPane))},layerPointToContainerPoint:function(a){return a.add(L.DomUtil.getPosition(this._mapPane))},layerPointToLatLng:function(a){return this.unproject(a.add(this._initialTopLeftPoint))},latLngToLayerPoint:function(a){return this.project(a)._subtract(this._initialTopLeftPoint)},project:function(a,b){var c=this.options,d=c.projection.project(a),e=c.scaling(isNaN(b)?this._zoom:b);return c.transformation._transform(d, containerPointToLayerPoint:function(a){return a.subtract(L.DomUtil.getPosition(this._mapPane))},layerPointToContainerPoint:function(a){return a.add(L.DomUtil.getPosition(this._mapPane))},layerPointToLatLng:function(a){return this.unproject(a.add(this._initialTopLeftPoint))},latLngToLayerPoint:function(a){return this.project(a)._subtract(this._initialTopLeftPoint)},project:function(a,b){var c=this.options,d=c.projection.project(a),e=c.scaling(isNaN(b)?this._zoom:b);return c.transformation._transform(d,
e)},unproject:function(a,b,c){b=this.options.scaling(isNaN(b)?this._zoom:b);return this.options.projection.unproject(this.options.transformation.untransform(a,b),c)},_initLayout:function(){var a=this._container;a.className+=" leaflet-container";this.options.fadeAnimation&&(a.className+=" leaflet-fade-anim");var b=L.DomUtil.getStyle(a,"position");a.style.position=b=="absolute"?"absolute":"relative";this._initPanes();this._initControlPos&&this._initControlPos()},_initPanes:function(){var a=this._panes= e)},unproject:function(a,b,c){b=this.options.scaling(isNaN(b)?this._zoom:b);return this.options.projection.unproject(this.options.transformation.untransform(a,b),c)},_initLayout:function(){var a=this._container;a.className+=" leaflet-container";this.options.fadeAnimation&&(a.className+=" leaflet-fade-anim");var b=L.DomUtil.getStyle(a,"position");a.style.position=b=="absolute"?"absolute":"relative";this._initPanes();this._initControlPos&&this._initControlPos()},_initPanes:function(){var a=this._panes=
{};this._mapPane=a.mapPane=this._createPane("leaflet-map-pane",this._container);this._tilePane=a.tilePane=this._createPane("leaflet-tile-pane",this._mapPane);this._objectsPane=a.objectsPane=this._createPane("leaflet-objects-pane",this._mapPane);a.shadowPane=this._createPane("leaflet-shadow-pane");a.overlayPane=this._createPane("leaflet-overlay-pane");a.markerPane=this._createPane("leaflet-marker-pane");a.popupPane=this._createPane("leaflet-popup-pane")},_createPane:function(a,b){return L.DomUtil.create("div", {};this._mapPane=a.mapPane=this._createPane("leaflet-map-pane",this._container);this._tilePane=a.tilePane=this._createPane("leaflet-tile-pane",this._mapPane);this._objectsPane=a.objectsPane=this._createPane("leaflet-objects-pane",this._mapPane);a.shadowPane=this._createPane("leaflet-shadow-pane");a.overlayPane=this._createPane("leaflet-overlay-pane");a.markerPane=this._createPane("leaflet-marker-pane");a.popupPane=this._createPane("leaflet-popup-pane")},_createPane:function(a,b){return L.DomUtil.create("div",
a,b||this._objectsPane)},_resetView:function(a,b,c){var d=this._zoom!=b;this.fire("movestart");this._zoom=b;this._initialTopLeftPoint=this._getNewTopLeftPoint(a);c?this._initialTopLeftPoint._add(L.DomUtil.getPosition(this._mapPane)):L.DomUtil.setPosition(this._mapPane,new L.Point(0,0));this.fire("viewreset");this.fire("move");d&&this.fire("zoomend");this.fire("moveend");if(!this._loaded)this._loaded=!0,this.fire("load")},_initLayers:function(a){this._layers={};for(var b=0,c=a.length;b<c;b++)this.addLayer(a[b])}, a,b||this._objectsPane)},_resetView:function(a,b,c){var d=this._zoom!=b;this.fire("movestart");this._zoom=b;this._initialTopLeftPoint=this._getNewTopLeftPoint(a);c?this._initialTopLeftPoint._add(L.DomUtil.getPosition(this._mapPane)):L.DomUtil.setPosition(this._mapPane,new L.Point(0,0));this._tileLayersToLoad=this._tileLayersNum;this.fire("viewreset");this.fire("move");d&&this.fire("zoomend");this.fire("moveend");if(!this._loaded)this._loaded=!0,this.fire("load")},_initLayers:function(a){this._layers=
_initControls:function(){this.options.zoomControl&&this.addControl(new L.Control.Zoom);if(this.options.attributionControl)this.attributionControl=new L.Control.Attribution,this.addControl(this.attributionControl)},_rawPanBy:function(a){var b=L.DomUtil.getPosition(this._mapPane);L.DomUtil.setPosition(this._mapPane,b.subtract(a))},_initEvents:function(){L.DomEvent.addListener(this._container,"click",this._onMouseClick,this);L.DomEvent.addListener(this._container,"dblclick",this._fireMouseEvent,this); {};for(var b=0,c=a.length;b<c;b++)this.addLayer(a[b])},_initControls:function(){this.options.zoomControl&&this.addControl(new L.Control.Zoom);if(this.options.attributionControl)this.attributionControl=new L.Control.Attribution,this.addControl(this.attributionControl)},_rawPanBy:function(a){var b=L.DomUtil.getPosition(this._mapPane);L.DomUtil.setPosition(this._mapPane,b.subtract(a))},_initEvents:function(){L.DomEvent.addListener(this._container,"click",this._onMouseClick,this);L.DomEvent.addListener(this._container,
L.DomEvent.addListener(this._container,"mousedown",this._fireMouseEvent,this);this.options.trackResize&&L.DomEvent.addListener(window,"resize",this.invalidateSize,this)},_onMouseClick:function(a){(!this.dragging||!this.dragging.moved())&&this._fireMouseEvent(a)},_fireMouseEvent:function(a){this.fire("pre"+a.type);this.hasEventListeners(a.type)&&this.fire(a.type,{latlng:this.mouseEventToLatLng(a),layerPoint:this.mouseEventToLayerPoint(a)})},_initInteraction:function(){var a={dragging:L.Handler.MapDrag, "dblclick",this._fireMouseEvent,this);L.DomEvent.addListener(this._container,"mousedown",this._fireMouseEvent,this);this.options.trackResize&&L.DomEvent.addListener(window,"resize",this.invalidateSize,this)},_onMouseClick:function(a){(!this.dragging||!this.dragging.moved())&&this._fireMouseEvent(a)},_fireMouseEvent:function(a){this.fire("pre"+a.type);this.hasEventListeners(a.type)&&this.fire(a.type,{latlng:this.mouseEventToLatLng(a),layerPoint:this.mouseEventToLayerPoint(a)})},_initInteraction:function(){var a=
touchZoom:L.Handler.TouchZoom,doubleClickZoom:L.Handler.DoubleClickZoom,scrollWheelZoom:L.Handler.ScrollWheelZoom,shiftDragZoom:L.Handler.ShiftDragZoom},b;for(b in a)a.hasOwnProperty(b)&&a[b]&&(this[b]=new a[b](this),this.options[b]&&this[b].enable())},_onTileLayerLoad:function(){this._tileLayersToLoad--;if(this._tileLayersNum&&!this._tileLayersToLoad&&this._tileBg)clearTimeout(this._clearTileBgTimer),this._clearTileBgTimer=setTimeout(L.Util.bind(this._clearTileBg,this),500)},_getTopLeftPoint:function(){if(!this._loaded)throw Error("Set map center and zoom first."); {dragging:L.Handler.MapDrag,touchZoom:L.Handler.TouchZoom,doubleClickZoom:L.Handler.DoubleClickZoom,scrollWheelZoom:L.Handler.ScrollWheelZoom,shiftDragZoom:L.Handler.ShiftDragZoom},b;for(b in a)a.hasOwnProperty(b)&&a[b]&&(this[b]=new a[b](this),this.options[b]&&this[b].enable())},_onTileLayerLoad:function(){this._tileLayersToLoad--;if(this._tileLayersNum&&!this._tileLayersToLoad&&this._tileBg)clearTimeout(this._clearTileBgTimer),this._clearTileBgTimer=setTimeout(L.Util.bind(this._clearTileBg,this),
return this._initialTopLeftPoint.subtract(L.DomUtil.getPosition(this._mapPane))},_getNewTopLeftPoint:function(a){var b=this.getSize().divideBy(2);return this.project(a).subtract(b).round()},_limitZoom:function(a){var b=this.getMinZoom(),c=this.getMaxZoom();return Math.max(b,Math.min(c,a))}});L.Map.include({locate:function(){navigator.geolocation?navigator.geolocation.getCurrentPosition(L.Util.bind(this._handleGeolocationResponse,this),L.Util.bind(this._handleGeolocationError,this)):this.fire("locationerror",{message:"Geolocation not supported."});return this},locateAndSetView:function(){this._setViewOnLocate=!0;return this.locate()},_handleGeolocationError:function(a){this.fire("locationerror",{message:a.message})},_handleGeolocationResponse:function(a){var b=180*a.coords.accuracy/4E7, 500)},_getTopLeftPoint:function(){if(!this._loaded)throw Error("Set map center and zoom first.");return this._initialTopLeftPoint.subtract(L.DomUtil.getPosition(this._mapPane))},_getNewTopLeftPoint:function(a){var b=this.getSize().divideBy(2);return this.project(a).subtract(b).round()},_limitZoom:function(a){var b=this.getMinZoom(),c=this.getMaxZoom();return Math.max(b,Math.min(c,a))}});L.Map.include({locate:function(){navigator.geolocation?navigator.geolocation.getCurrentPosition(L.Util.bind(this._handleGeolocationResponse,this),L.Util.bind(this._handleGeolocationError,this)):this.fire("locationerror",{message:"Geolocation not supported."});return this},locateAndSetView:function(){this._setViewOnLocate=!0;return this.locate()},_handleGeolocationError:function(a){this.fire("locationerror",{message:a.message})},_handleGeolocationResponse:function(a){var b=180*a.coords.accuracy/4E7,
c=b*2,d=a.coords.latitude,e=a.coords.longitude,f=new L.LatLng(d-b,e-c);b=new L.LatLng(d+b,e+c);f=new L.LatLngBounds(f,b);if(this._setViewOnLocate)this.fitBounds(f),this._setViewOnLocate=!1;this.fire("locationfound",{latlng:new L.LatLng(d,e),bounds:f,accuracy:a.coords.accuracy})}});L.Map.include({openPopup:function(a){this.closePopup();this._popup=a;return this.addLayer(a)},closePopup:function(){this._popup&&this.removeLayer(this._popup);return this}});L.Map.include(!L.Transition||!L.Transition.implemented()?{}:{setView:function(a,b,c){b=this._limitZoom(b);var d=this._zoom!=b;if(this._loaded&&!c&&this._layers&&(c=this._getNewTopLeftPoint(a).subtract(this._getTopLeftPoint()),d?this._zoomToIfCenterInView&&this._zoomToIfCenterInView(a,b,c):this._panByIfClose(c)))return this;this._resetView(a,b);return this},panBy:function(a){if(!this._panTransition)this._panTransition=new L.Transition(this._mapPane,{duration:0.3}),this._panTransition.on("step",this._onPanTransitionStep, c=b*2,d=a.coords.latitude,e=a.coords.longitude,f=new L.LatLng(d-b,e-c);b=new L.LatLng(d+b,e+c);f=new L.LatLngBounds(f,b);if(this._setViewOnLocate)this.fitBounds(f),this._setViewOnLocate=!1;this.fire("locationfound",{latlng:new L.LatLng(d,e),bounds:f,accuracy:a.coords.accuracy})}});L.Map.include({openPopup:function(a){this.closePopup();this._popup=a;return this.addLayer(a)},closePopup:function(){this._popup&&this.removeLayer(this._popup);return this}});L.Map.include(!L.Transition||!L.Transition.implemented()?{}:{setView:function(a,b,c){b=this._limitZoom(b);var d=this._zoom!=b;if(this._loaded&&!c&&this._layers&&(c=this._getNewTopLeftPoint(a).subtract(this._getTopLeftPoint()),d?this._zoomToIfCenterInView&&this._zoomToIfCenterInView(a,b,c):this._panByIfClose(c)))return this;this._resetView(a,b);return this},panBy:function(a){if(!this._panTransition)this._panTransition=new L.Transition(this._mapPane,{duration:0.3}),this._panTransition.on("step",this._onPanTransitionStep,
this),this._panTransition.on("end",this._onPanTransitionEnd,this);this.fire(this,"movestart");this._panTransition.run({position:L.DomUtil.getPosition(this._mapPane).subtract(a)});return this},_onPanTransitionStep:function(){this.fire("move")},_onPanTransitionEnd:function(){this.fire("moveend")},_panByIfClose:function(a){if(this._offsetIsWithinView(a))return this.panBy(a),!0;return!1},_offsetIsWithinView:function(a,b){var c=b||1,d=this.getSize();return Math.abs(a.x)<=d.x*c&&Math.abs(a.y)<=d.y*c}});L.Map.include(!L.DomUtil.TRANSITION?{}:{_zoomToIfCenterInView:function(a,b,c){if(this._animatingZoom)return!0;if(!this.options.zoomAnimation)return!1;var d=Math.pow(2,b-this._zoom);c=c.divideBy(1-1/d);if(!this._offsetIsWithinView(c,1))return!1;this._mapPane.className+=" leaflet-zoom-anim";c=this.containerPointToLayerPoint(this.getSize().divideBy(2)).add(c);this._prepareTileBg();this._runAnimation(a,b,d,c);return!0},_runAnimation:function(a,b,c,d){this._animatingZoom=!0;this._animateToCenter=a;this._animateToZoom= this),this._panTransition.on("end",this._onPanTransitionEnd,this);this.fire(this,"movestart");this._panTransition.run({position:L.DomUtil.getPosition(this._mapPane).subtract(a)});return this},_onPanTransitionStep:function(){this.fire("move")},_onPanTransitionEnd:function(){this.fire("moveend")},_panByIfClose:function(a){if(this._offsetIsWithinView(a))return this.panBy(a),!0;return!1},_offsetIsWithinView:function(a,b){var c=b||1,d=this.getSize();return Math.abs(a.x)<=d.x*c&&Math.abs(a.y)<=d.y*c}});L.Map.include(!L.DomUtil.TRANSITION?{}:{_zoomToIfCenterInView:function(a,b,c){if(this._animatingZoom)return!0;if(!this.options.zoomAnimation)return!1;var d=Math.pow(2,b-this._zoom);c=c.divideBy(1-1/d);if(!this._offsetIsWithinView(c,1))return!1;this._mapPane.className+=" leaflet-zoom-anim";c=this.containerPointToLayerPoint(this.getSize().divideBy(2)).add(c);this._prepareTileBg();this._runAnimation(a,b,d,c);return!0},_runAnimation:function(a,b,c,d){this._animatingZoom=!0;this._animateToCenter=a;this._animateToZoom=
b;a=L.DomUtil.TRANSFORM;L.Browser.gecko&&(this._tileBg.style[a]+=" translate(0,0)");L.Browser.android?(this._tileBg.style[a+"Origin"]=d.x+"px "+d.y+"px",c="scale("+c+")"):c=L.DomUtil.getScaleString(c,d);L.Util.falseFn(this._tileBg.offsetWidth);d={};d[a]=this._tileBg.style[a]+" "+c;this._tileBg.transition.run(d)},_prepareTileBg:function(){if(!this._tileBg)this._tileBg=this._createPane("leaflet-tile-pane",this._mapPane),this._tileBg.style.zIndex=1;var a=this._tilePane,b=this._tileBg;b.innerHTML=""; b;a=L.DomUtil.TRANSFORM;L.Browser.gecko&&(this._tileBg.style[a]+=" translate(0,0)");L.Browser.android?(this._tileBg.style[a+"Origin"]=d.x+"px "+d.y+"px",c="scale("+c+")"):c=L.DomUtil.getScaleString(c,d);L.Util.falseFn(this._tileBg.offsetWidth);d={};d[a]=this._tileBg.style[a]+" "+c;this._tileBg.transition.run(d)},_prepareTileBg:function(){if(!this._tileBg)this._tileBg=this._createPane("leaflet-tile-pane",this._mapPane),this._tileBg.style.zIndex=1;var a=this._tilePane,b=this._tileBg;b.innerHTML="";

65
src/layer/TileLayer.WMS.js Normal file
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L.TileLayer.WMS = L.TileLayer.extend({
defaultWmsParams: {
version: '1.1.1',
layers: '',
styles: '',
format: 'image/jpeg',
transparent: false
},
initialize: function(url, options) {
this._url = url;
L.Util.setOptions(this, options);
var tileSize = this.options.tileSize;
this.wmsParams = L.Util.extend({
service: 'WMS',
request: 'GetMap',
width: tileSize,
height: tileSize
}, this.defaultWmsParams);
for (var i in options) {
if (this.defaultWmsParams.hasOwnProperty(i)) {
this.wmsParams[i] = options[i];
}
}
var projectionKey = (parseFloat(this.wmsParams.version) >= 1.3 ? 'crs' : 'srs');
this.wmsParams[projectionKey] = 'EPSG:3857';
},
getTileUrl: function(tilePoint, zoom) {
var tileSize = this.options.tileSize,
nwPoint = tilePoint.multiplyBy(tileSize),
sePoint = nwPoint.add(new L.Point(tileSize, tileSize)),
nw = this._map.unproject(nwPoint, zoom, true),
se = this._map.unproject(sePoint, zoom, true),
nwMerc = this._latlngToSphericalMerc(nw),
seMerc = this._latlngToSphericalMerc(se),
bbox = [nwMerc.x, seMerc.y, seMerc.x, nwMerc.y].join(',');
return this._url + this._getParamsStr() + "&bbox=" + bbox;
},
_latlngToSphericalMerc: function(latlng) {
var r = 6378137,
d = L.LatLng.DEG_TO_RAD,
x = r * latlng.lng * d,
sin = Math.sin(latlng.lat * d),
y = (r / 2) * Math.log((1 + sin)/(1 - sin));
return new L.Point(x, y);
},
_getParamsStr: function() {
var params = [];
for (var i in this.wmsParams) {
if (this.wmsParams.hasOwnProperty(i)) {
params.push(i + '=' + this.wmsParams[i]);
}
}
return '?' + params.join('&');
}
});