leaflet
Version:
JavaScript library for mobile-friendly interactive maps
5 lines • 141 kB
JavaScript
/* @preserve
* Leaflet 1.4.0, a JS library for interactive maps. http://leafletjs.com
* (c) 2010-2018 Vladimir Agafonkin, (c) 2010-2011 CloudMade
*/
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e=w(i.paddingTopLeft||i.padding||[0,0]),n=w(i.paddingBottomRight||i.padding||[0,0]),o=this.getBoundsZoom(t,!1,e.add(n));if((o="number"==typeof i.maxZoom?Math.min(i.maxZoom,o):o)===1/0)return{center:t.getCenter(),zoom:o};var s=n.subtract(e).divideBy(2),r=this.project(t.getSouthWest(),o),a=this.project(t.getNorthEast(),o);return{center:this.unproject(r.add(a).divideBy(2).add(s),o),zoom:o}},fitBounds:function(t,i){if(!(t=z(t)).isValid())throw new Error("Bounds are not valid.");var e=this._getBoundsCenterZoom(t,i);return this.setView(e.center,e.zoom,i)},fitWorld:function(t){return this.fitBounds([[-90,-180],[90,180]],t)},panTo:function(t,i){return this.setView(t,this._zoom,{pan:i})},panBy:function(t,i){if(t=w(t).round(),i=i||{},!t.x&&!t.y)return this.fire("moveend");if(!0!==i.animate&&!this.getSize().contains(t))return this._resetView(this.unproject(this.project(this.getCenter()).add(t)),this.getZoom()),this;if(this._panAnim||(this._panAnim=new Le,this._panAnim.on({step:this._onPanTransitionStep,end:this._onPanTransitionEnd},this)),i.noMoveStart||this.fire("movestart"),!1!==i.animate){Q(this._mapPane,"leaflet-pan-anim");var e=this._getMapPanePos().subtract(t).round();this._panAnim.run(this._mapPane,e,i.duration||.25,i.easeLinearity)}else this._rawPanBy(t),this.fire("move").fire("moveend");return this},flyTo:function(t,i,e){function n(t){var i=(g*g-m*m+(t?-1:1)*x*x*v*v)/(2*(t?g:m)*x*v),e=Math.sqrt(i*i+1)-i;return e<1e-9?-18:Math.log(e)}function o(t){return(Math.exp(t)-Math.exp(-t))/2}function s(t){return(Math.exp(t)+Math.exp(-t))/2}function r(t){return o(t)/s(t)}function a(t){return m*(s(w)/s(w+y*t))}function h(t){return m*(s(w)*r(w+y*t)-o(w))/x}function u(t){return 1-Math.pow(1-t,1.5)}function l(){var e=(Date.now()-P)/b,n=u(e)*L;e<=1?(this._flyToFrame=f(l,this),this._move(this.unproject(c.add(_.subtract(c).multiplyBy(h(n)/v)),p),this.getScaleZoom(m/a(n),p),{flyTo:!0})):this._move(t,i)._moveEnd(!0)}if(!1===(e=e||{}).animate||!ji)return this.setView(t,i,e);this._stop();var c=this.project(this.getCenter()),_=this.project(t),d=this.getSize(),p=this._zoom;t=C(t),i=void 0===i?p:i;var m=Math.max(d.x,d.y),g=m*this.getZoomScale(p,i),v=_.distanceTo(c)||1,y=1.42,x=y*y,w=n(0),P=Date.now(),L=(n(1)-w)/y,b=e.duration?1e3*e.duration:1e3*L*.8;return this._moveStart(!0,e.noMoveStart),l.call(this),this},flyToBounds:function(t,i){var e=this._getBoundsCenterZoom(t,i);return this.flyTo(e.center,e.zoom,i)},setMaxBounds:function(t){return(t=z(t)).isValid()?(this.options.maxBounds&&this.off("moveend",this._panInsideMaxBounds),this.options.maxBounds=t,this._loaded&&this._panInsideMaxBounds(),this.on("moveend",this._panInsideMaxBounds)):(this.options.maxBounds=null,this.off("moveend",this._panInsideMaxBounds))},setMinZoom:function(t){var i=this.options.minZoom;return this.options.minZoom=t,this._loaded&&i!==t&&(this.fire("zoomlevelschange"),this.getZoom()<this.options.minZoom)?this.setZoom(t):this},setMaxZoom:function(t){var i=this.options.maxZoom;return this.options.maxZoom=t,this._loaded&&i!==t&&(this.fire("zoomlevelschange"),this.getZoom()>this.options.maxZoom)?this.setZoom(t):this},panInsideBounds:function(t,i){this._enforcingBounds=!0;var e=this.getCenter(),n=this._limitCenter(e,this._zoom,z(t));return e.equals(n)||this.panTo(n,i),this._enforcingBounds=!1,this},panInside:function(t,i){var e=w((i=i||{}).paddingTopLeft||i.padding||[0,0]),n=w(i.paddingBottomRight||i.padding||[0,0]),o=this.getCenter(),s=this.project(o),r=this.project(t),a=this.getPixelBounds(),h=a.getSize().divideBy(2),u=b([a.min.add(e),a.max.subtract(n)]);if(!u.contains(r)){this._enforcingBounds=!0;var l=s.subtract(r),c=w(r.x+l.x,r.y+l.y);(r.x<u.min.x||r.x>u.max.x)&&(c.x=s.x-l.x,l.x>0?c.x+=h.x-e.x:c.x-=h.x-n.x),(r.y<u.min.y||r.y>u.max.y)&&(c.y=s.y-l.y,l.y>0?c.y+=h.y-e.y:c.y-=h.y-n.y),this.panTo(this.unproject(c),i),this._enforcingBounds=!1}return this},invalidateSize:function(t){if(!this._loaded)return this;t=i({animate:!1,pan:!0},!0===t?{animate:!0}:t);var n=this.getSize();this._sizeChanged=!0,this._lastCenter=null;var o=this.getSize(),s=n.divideBy(2).round(),r=o.divideBy(2).round(),a=s.subtract(r);return a.x||a.y?(t.animate&&t.pan?this.panBy(a):(t.pan&&this._rawPanBy(a),this.fire("move"),t.debounceMoveend?(clearTimeout(this._sizeTimer),this._sizeTimer=setTimeout(e(this.fire,this,"moveend"),200)):this.fire("moveend")),this.fire("resize",{oldSize:n,newSize:o})):this},stop:function(){return this.setZoom(this._limitZoom(this._zoom)),this.options.zoomSnap||this.fire("viewreset"),this._stop()},locate:function(t){if(t=this._locateOptions=i({timeout:1e4,watch:!1},t),!("geolocation"in navigator))return this._handleGeolocationError({code:0,message:"Geolocation not supported."}),this;var n=e(this._handleGeolocationResponse,this),o=e(this._handleGeolocationError,this);return t.watch?this._locationWatchId=navigator.geolocation.watchPosition(n,o,t):navigator.geolocation.getCurrentPosition(n,o,t),this},stopLocate:function(){return navigator.geolocation&&navigator.geolocation.clearWatch&&navigator.geolocation.clearWatch(this._locationWatchId),this._locateOptions&&(this._locateOptions.setView=!1),this},_handleGeolocationError:function(t){var i=t.code,e=t.message||(1===i?"permission denied":2===i?"position unavailable":"timeout");this._locateOptions.setView&&!this._loaded&&this.fitWorld(),this.fire("locationerror",{code:i,message:"Geolocation error: "+e+"."})},_handleGeolocationResponse:function(t){var i=new M(t.coords.latitude,t.coords.longitude),e=i.toBounds(2*t.coords.accuracy),n=this._locateOptions;if(n.setView){var o=this.getBoundsZoom(e);this.setView(i,n.maxZoom?Math.min(o,n.maxZoom):o)}var s={latlng:i,bounds:e,timestamp:t.timestamp};for(var r in t.coords)"number"==typeof t.coords[r]&&(s[r]=t.coords[r]);this.fire("locationfound",s)},addHandler:function(t,i){if(!i)return this;var e=this[t]=new i(this);return this._handlers.push(e),this.options[t]&&e.enable(),this},remove:function(){if(this._initEvents(!0),this._containerId!==this._container._leaflet_id)throw new Error("Map container is being reused by another instance");try{delete this._container._leaflet_id,delete this._containerId}catch(t){this._container._leaflet_id=void 0,this._containerId=void 0}void 0!==this._locationWatchId&&this.stopLocate(),this._stop(),K(this._mapPane),this._clearControlPos&&this._clearControlPos(),this._resizeRequest&&(g(this._resizeRequest),this._resizeRequest=null),this._clearHandlers(),this._loaded&&this.fire("unload");var t;for(t in this._layers)this._layers[t].remove();for(t in this._panes)K(this._panes[t]);return this._layers=[],this._panes=[],delete this._mapPane,delete this._renderer,this},createPane:function(t,i){var e=G("div","leaflet-pane"+(t?" leaflet-"+t.replace("Pane","")+"-pane":""),i||this._mapPane);return t&&(this._panes[t]=e),e},getCenter:function(){return this._checkIfLoaded(),this._lastCenter&&!this._moved()?this._lastCenter:this.layerPointToLatLng(this._getCenterLayerPoint())},getZoom:function(){return this._zoom},getBounds:function(){var t=this.getPixelBounds();return new T(this.unproject(t.getBottomLeft()),this.unproject(t.getTopRight()))},getMinZoom:function(){return void 0===this.options.minZoom?this._layersMinZoom||0:this.options.minZoom},getMaxZoom:function(){return void 0===this.options.maxZoom?void 0===this._layersMaxZoom?1/0:this._layersMaxZoom:this.options.maxZoom},getBoundsZoom:function(t,i,e){t=z(t),e=w(e||[0,0]);var n=this.getZoom()||0,o=this.getMinZoom(),s=this.getMaxZoom(),r=t.getNorthWest(),a=t.getSouthEast(),h=this.getSize().subtract(e),u=b(this.project(a,n),this.project(r,n)).getSize(),l=ji?this.options.zoomSnap:1,c=h.x/u.x,_=h.y/u.y,d=i?Math.max(c,_):Math.min(c,_);return n=this.getScaleZoom(d,n),l&&(n=Math.round(n/(l/100))*(l/100),n=i?Math.ceil(n/l)*l:Math.floor(n/l)*l),Math.max(o,Math.min(s,n))},getSize:function(){return this._size&&!this._sizeChanged||(this._size=new x(this._container.clientWidth||0,this._container.clientHeight||0),this._sizeChanged=!1),this._size.clone()},getPixelBounds:function(t,i){var e=this._getTopLeftPoint(t,i);return new P(e,e.add(this.getSize()))},getPixelOrigin:function(){return this._checkIfLoaded(),this._pixelOrigin},getPixelWorldBounds:function(t){return this.options.crs.getProjectedBounds(void 0===t?this.getZoom():t)},getPane:function(t){return"string"==typeof t?this._panes[t]:t},getPanes:function(){return this._panes},getContainer:function(){return this._container},getZoomScale:function(t,i){var e=this.options.crs;return i=void 0===i?this._zoom:i,e.scale(t)/e.scale(i)},getScaleZoom:function(t,i){var e=this.options.crs;i=void 0===i?this._zoom:i;var n=e.zoom(t*e.scale(i));return isNaN(n)?1/0:n},project:function(t,i){return i=void 0===i?this._zoom:i,this.options.crs.latLngToPoint(C(t),i)},unproject:function(t,i){return i=void 0===i?this._zoom:i,this.options.crs.pointToLatLng(w(t),i)},layerPointToLatLng:function(t){var i=w(t).add(this.getPixelOrigin());return this.unproject(i)},latLngToLayerPoint:function(t){return this.project(C(t))._round()._subtract(this.getPixelOrigin())},wrapLatLng:function(t){return this.options.crs.wrapLatLng(C(t))},wrapLatLngBounds:function(t){return this.options.crs.wrapLatLngBounds(z(t))},distance:function(t,i){return this.options.crs.distance(C(t),C(i))},containerPointToLayerPoint:function(t){return w(t).subtract(this._getMapPanePos())},layerPointToContainerPoint:function(t){return w(t).add(this._getMapPanePos())},containerPointToLatLng:function(t){var i=this.containerPointToLayerPoint(w(t));return this.layerPointToLatLng(i)},latLngToContainerPoint:function(t){return this.layerPointToContainerPoint(this.latLngToLayerPoint(C(t)))},mouseEventToContainerPoint:function(t){return bt(t,this._container)},mouseEventToLayerPoint:function(t){return this.containerPointToLayerPoint(this.mouseEventToContainerPoint(t))},mouseEventToLatLng:function(t){return this.layerPointToLatLng(this.mouseEventToLayerPoint(t))},_initContainer:function(t){var i=this._container=V(t);if(!i)throw new Error("Map container not found.");if(i._leaflet_id)throw new Error("Map container is already initialized.");mt(i,"scroll",this._onScroll,this),this._containerId=n(i)},_initLayout:function(){var t=this._container;this._fadeAnimated=this.options.fadeAnimation&&ji,Q(t,"leaflet-container"+(qi?" leaflet-touch":"")+(Yi?" leaflet-retina":"")+(Li?" leaflet-oldie":"")+(Bi?" leaflet-safari":"")+(this._fadeAnimated?" leaflet-fade-anim":""));var i=q(t,"position");"absolute"!==i&&"relative"!==i&&"fixed"!==i&&(t.style.position="relative"),this._initPanes(),this._initControlPos&&this._initControlPos()},_initPanes:function(){var t=this._panes={};this._paneRenderers={},this._mapPane=this.createPane("mapPane",this._container),at(this._mapPane,new x(0,0)),this.createPane("tilePane"),this.createPane("shadowPane"),this.createPane("overlayPane"),this.createPane("markerPane"),this.createPane("tooltipPane"),this.createPane("popupPane"),this.options.markerZoomAnimation||(Q(t.markerPane,"leaflet-zoom-hide"),Q(t.shadowPane,"leaflet-zoom-hide"))},_resetView:function(t,i){at(this._mapPane,new x(0,0));var e=!this._loaded;this._loaded=!0,i=this._limitZoom(i),this.fire("viewprereset");var n=this._zoom!==i;this._moveStart(n,!1)._move(t,i)._moveEnd(n),this.fire("viewreset"),e&&this.fire("load")},_moveStart:function(t,i){return t&&this.fire("zoomstart"),i||this.fire("movestart"),this},_move:function(t,i,e){void 0===i&&(i=this._zoom);var n=this._zoom!==i;return this._zoom=i,this._lastCenter=t,this._pixelOrigin=this._getNewPixelOrigin(t),(n||e&&e.pinch)&&this.fire("zoom",e),this.fire("move",e)},_moveEnd:function(t){return t&&this.fire("zoomend"),this.fire("moveend")},_stop:function(){return g(this._flyToFrame),this._panAnim&&this._panAnim.stop(),this},_rawPanBy:function(t){at(this._mapPane,this._getMapPanePos().subtract(t))},_getZoomSpan:function(){return this.getMaxZoom()-this.getMinZoom()},_panInsideMaxBounds:function(){this._enforcingBounds||this.panInsideBounds(this.options.maxBounds)},_checkIfLoaded:function(){if(!this._loaded)throw new Error("Set map center and zoom first.")},_initEvents:function(t){this._targets={},this._targets[n(this._container)]=this;var i=t?ft:mt;i(this._container,"click dblclick mousedown mouseup mouseover mouseout mousemove contextmenu keypress",this._handleDOMEvent,this),this.options.trackResize&&i(window,"resize",this._onResize,this),ji&&this.options.transform3DLimit&&(t?this.off:this.on).call(this,"moveend",this._onMoveEnd)},_onResize:function(){g(this._resizeRequest),this._resizeRequest=f(function(){this.invalidateSize({debounceMoveend:!0})},this)},_onScroll:function(){this._container.scrollTop=0,this._container.scrollLeft=0},_onMoveEnd:function(){var t=this._getMapPanePos();Math.max(Math.abs(t.x),Math.abs(t.y))>=this.options.transform3DLimit&&this._resetView(this.getCenter(),this.getZoom())},_findEventTargets:function(t,i){for(var e,o=[],s="mouseout"===i||"mouseover"===i,r=t.target||t.srcElement,a=!1;r;){if((e=this._targets[n(r)])&&("click"===i||"preclick"===i)&&!t._simulated&&this._draggableMoved(e)){a=!0;break}if(e&&e.listens(i,!0)){if(s&&!Ct(r,t))break;if(o.push(e),s)break}if(r===this._container)break;r=r.parentNode}return o.length||a||s||!Ct(r,t)||(o=[this]),o},_handleDOMEvent:function(t){if(this._loaded&&!Mt(t)){var i=t.type;"mousedown"!==i&&"keypress"!==i||ct(t.target||t.srcElement),this._fireDOMEvent(t,i)}},_mouseEvents:["click","dblclick","mouseover","mouseout","contextmenu"],_fireDOMEvent:function(t,e,n){if("click"===t.type){var o=i({},t);o.type="preclick",this._fireDOMEvent(o,o.type,n)}if(!t._stopped&&(n=(n||[]).concat(this._findEventTargets(t,e))).length){var s=n[0];"contextmenu"===e&&s.listens(e,!0)&&Pt(t);var r={originalEvent:t};if("keypress"!==t.type){var a=s.getLatLng&&(!s._radius||s._radius<=10);r.containerPoint=a?this.latLngToContainerPoint(s.getLatLng()):this.mouseEventToContainerPoint(t),r.layerPoint=this.containerPointToLayerPoint(r.containerPoint),r.latlng=a?s.getLatLng():this.layerPointToLatLng(r.layerPoint)}for(var h=0;h<n.length;h++)if(n[h].fire(e,r,!0),r.originalEvent._stopped||!1===n[h].options.bubblingMouseEvents&&-1!==d(this._mouseEvents,e))return}},_draggableMoved:function(t){return(t=t.dragging&&t.dragging.enabled()?t:this).dragging&&t.dragging.moved()||this.boxZoom&&this.boxZoom.moved()},_clearHandlers:function(){for(var t=0,i=this._handlers.length;t<i;t++)this._handlers[t].disable()},whenReady:function(t,i){return this._loaded?t.call(i||this,{target:this}):this.on("load",t,i),this},_getMapPanePos:function(){return ht(this._mapPane)||new x(0,0)},_moved:function(){var t=this._getMapPanePos();return t&&!t.equals([0,0])},_getTopLeftPoint:function(t,i){return(t&&void 0!==i?this._getNewPixelOrigin(t,i):this.getPixelOrigin()).subtract(this._getMapPanePos())},_getNewPixelOrigin:function(t,i){var e=this.getSize()._divideBy(2);return this.project(t,i)._subtract(e)._add(this._getMapPanePos())._round()},_latLngToNewLayerPoint:function(t,i,e){var n=this._getNewPixelOrigin(e,i);return this.project(t,i)._subtract(n)},_latLngBoundsToNewLayerBounds:function(t,i,e){var n=this._getNewPixelOrigin(e,i);return b([this.project(t.getSouthWest(),i)._subtract(n),this.project(t.getNorthWest(),i)._subtract(n),this.project(t.getSouthEast(),i)._subtract(n),this.project(t.getNorthEast(),i)._subtract(n)])},_getCenterLayerPoint:function(){return this.containerPointToLayerPoint(this.getSize()._divideBy(2))},_getCenterOffset:function(t){return this.latLngToLayerPoint(t).subtract(this._getCenterLayerPoint())},_limitCenter:function(t,i,e){if(!e)return t;var n=this.project(t,i),o=this.getSize().divideBy(2),s=new P(n.subtract(o),n.add(o)),r=this._getBoundsOffset(s,e,i);return r.round().equals([0,0])?t:this.unproject(n.add(r),i)},_limitOffset:function(t,i){if(!i)return t;var e=this.getPixelBounds(),n=new P(e.min.add(t),e.max.add(t));return t.add(this._getBoundsOffset(n,i))},_getBoundsOffset:function(t,i,e){var n=b(this.project(i.getNorthEast(),e),this.project(i.getSouthWest(),e)),o=n.min.subtract(t.min),s=n.max.subtract(t.max);return new x(this._rebound(o.x,-s.x),this._rebound(o.y,-s.y))},_rebound:function(t,i){return t+i>0?Math.round(t-i)/2:Math.max(0,Math.ceil(t))-Math.max(0,Math.floor(i))},_limitZoom:function(t){var i=this.getMinZoom(),e=this.getMaxZoom(),n=ji?this.options.zoomSnap:1;return n&&(t=Math.round(t/n)*n),Math.max(i,Math.min(e,t))},_onPanTransitionStep:function(){this.fire("move")},_onPanTransitionEnd:function(){tt(this._mapPane,"leaflet-pan-anim"),this.fire("moveend")},_tryAnimatedPan:function(t,i){var e=this._getCenterOffset(t)._trunc();return!(!0!==(i&&i.animate)&&!this.getSize().contains(e))&&(this.panBy(e,i),!0)},_createAnimProxy:function(){var t=this._proxy=G("div","leaflet-proxy leaflet-zoom-animated");this._panes.mapPane.appendChild(t),this.on("zoomanim",function(t){var i=ce,e=this._proxy.style[i];rt(this._proxy,this.project(t.center,t.zoom),this.getZoomScale(t.zoom,1)),e===this._proxy.style[i]&&this._animatingZoom&&this._onZoomTransitionEnd()},this),this.on("load moveend",function(){var t=this.getCenter(),i=this.getZoom();rt(this._proxy,this.project(t,i),this.getZoomScale(i,1))},this),this._on("unload",this._destroyAnimProxy,this)},_destroyAnimProxy:function(){K(this._proxy),delete this._proxy},_catchTransitionEnd:function(t){this._animatingZoom&&t.propertyName.indexOf("transform")>=0&&this._onZoomTransitionEnd()},_nothingToAnimate:function(){return!this._container.getElementsByClassName("leaflet-zoom-animated").length},_tryAnimatedZoom:function(t,i,e){if(this._animatingZoom)return!0;if(e=e||{},!this._zoomAnimated||!1===e.animate||this._nothingToAnimate()||Math.abs(i-this._zoom)>this.options.zoomAnimationThreshold)return!1;var n=this.getZoomScale(i),o=this._getCenterOffset(t)._divideBy(1-1/n);return!(!0!==e.animate&&!this.getSize().contains(o))&&(f(function(){this._moveStart(!0,!1)._animateZoom(t,i,!0)},this),!0)},_animateZoom:function(t,i,n,o){this._mapPane&&(n&&(this._animatingZoom=!0,this._animateToCenter=t,this._animateToZoom=i,Q(this._mapPane,"leaflet-zoom-anim")),this.fire("zoomanim",{center:t,zoom:i,noUpdate:o}),setTimeout(e(this._onZoomTransitionEnd,this),250))},_onZoomTransitionEnd:function(){this._animatingZoom&&(this._mapPane&&tt(this._mapPane,"leaflet-zoom-anim"),this._animatingZoom=!1,this._move(this._animateToCenter,this._animateToZoom),f(function(){this._moveEnd(!0)},this))}}),Te=v.extend({options:{position:"topright"},initialize:function(t){l(this,t)},getPosition:function(){return this.options.position},setPosition:function(t){var i=this._map;return i&&i.removeControl(this),this.options.position=t,i&&i.addControl(