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/*
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Author: Mike Adair mike.adairATccrs.nrcan.gc.ca
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License: LGPL as per: http://www.gnu.org/copyleft/lesser.html
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$Id: CursorTrack.js 3889 2008-02-27 18:29:43Z ahocevar $
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*/
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// Ensure this object's dependancies are loaded.
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mapbuilder.loadScript(baseDir+"/widget/WidgetBaseXSL.js");
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/**
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* Widget to display the mouse coordinates when it is over a MapContainer widget.
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*
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* @constructor
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* @base WidgetBaseXSL
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* @param widgetNode This widget's object node from the configuration document.
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* @param model The model that this widget is a view of.
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*/
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function CursorTrack(widgetNode, model) {
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WidgetBaseXSL.apply(this,new Array(widgetNode, model));
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//by default, display coords in latlon; if false show map XY
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this.showPx = Mapbuilder.parseBoolean(this.getProperty("mb:showPx", false)); // pixel coordinates
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this.showXY = Mapbuilder.parseBoolean(this.getProperty("mb:showXY", false)); // XY Coordinates
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this.showLatLong = Mapbuilder.parseBoolean(this.getProperty("mb:showLatLong", true)); // Standard lat long
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this.showDMS = Mapbuilder.parseBoolean(this.getProperty("mb:showDMS", false)); // Lat/long in DD MM SS.S format
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this.showDM = Mapbuilder.parseBoolean(this.getProperty("mb:showDM", false)); // Lat/long in DD MM.MMMM format
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this.showMGRS = Mapbuilder.parseBoolean(this.getProperty("mb:showMGRS", false)); // Military Grid Reference System
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if( this.showMGRS ) {
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// load this here so it is not required for everyone
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mapbuilder.loadScript(baseDir+"/util/MGRS.js");
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}
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this.precision = this.getProperty("mb:precision", 2);
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//set some properties for the form output
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this.formName = "CursorTrackForm_" + mbIds.getId();
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this.stylesheet.setParameter("formName", this.formName);
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/**
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* Add mouse event listeners to the map object in the model.
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* @param objRef Pointer to this CursorTrack object.
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*/
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this.init = function(objRef) {
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objRef.proj = new OpenLayers.Projection( objRef.model.getSRS() );
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objRef.model.map.events.register('mousemove', objRef, objRef.mousemoveHandler);
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objRef.model.map.events.register('mouseout', objRef, objRef.mouseoutHandler);
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if( this.showMGRS )
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this.MGRS = new MGRS();
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}
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this.model.addListener("loadModel", this.init, this );
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this.clear = function(objRef) {
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if (objRef.model.map && objRef.model.map.events) {
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objRef.model.map.events.unregister('mousemove', objRef, objRef.mousemoveHandler);
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objRef.model.map.events.unregister('mouseout', objRef, objRef.mouseoutHandler);
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}
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}
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this.model.addListener("newModel", this.clear, this);
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/**
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* OpenLayers mousemove event listener.
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* @param evt OpenLayers mouse event
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*/
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this.mousemoveHandler = function(evt) {
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var coordForm = document.getElementById(this.formName);
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if (!evt) return;
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// capture XY coordinates
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var evXY = this.model.map.getLonLatFromPixel(evt.xy);
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///CSCS
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var pt=new OpenLayers.Geometry.Point(evXY.lon, evXY.lat)
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pt.transform(this.proj, new OpenLayers.Projection("EPSG:4326"));
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var evLonLat = new OpenLayers.LonLat(pt.x,pt.y);
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if( this.showPx ) {
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if( coordForm.px )
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coordForm.px.value = evt.xy.x;
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if( coordForm.py )
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coordForm.py.value = evt.xy.y;
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}
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if( this.showXY ) {
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if( coordForm.x )
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coordForm.x.value = evXY.lon.toFixed(this.precision);;
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if( coordForm.y )
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coordForm.y.value = evXY.lat.toFixed(this.precision);;
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}
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if( this.showLatLong ) {
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if( coordForm.longitude )
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coordForm.longitude.value = evLonLat.lon.toFixed(this.precision);
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if( coordForm.latitude )
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coordForm.latitude.value = evLonLat.lat.toFixed(this.precision);
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}
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if( this.showDMS ) {
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var longitude = this.convertDMS(evLonLat.lon, 'LON');
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if( coordForm.longdeg )
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coordForm.longdeg.value = longitude[0];
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if( coordForm.longmin )
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coordForm.longmin.value = longitude[1];
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if( coordForm.longsec )
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coordForm.longsec.value = longitude[2];
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if( coordForm.longH )
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coordForm.longH.value = longitude[3];
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var latitude = this.convertDMS(evLonLat.lat, 'LAT');
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if( coordForm.latdeg )
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coordForm.latdeg.value = latitude[0];
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if( coordForm.latmin )
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coordForm.latmin.value = latitude[1];
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if( coordForm.latsec )
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coordForm.latsec.value = latitude[2];
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if( coordForm.latH )
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coordForm.latH.value = latitude[3];
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}
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if( this.showDM ) {
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var longitude = this.convertDM(evLonLat.lon, 'LON');
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if( coordForm.longDMdeg )
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coordForm.longDMdeg.value = longitude[0];
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if( coordForm.longDMmin )
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coordForm.longDMmin.value = longitude[1];
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if( coordForm.longDMH )
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coordForm.longDMH.value = longitude[2];
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var latitude = this.convertDM(evLonLat.lat, 'LAT');
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if( coordForm.latDMdeg )
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coordForm.latDMdeg.value = latitude[0];
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if( coordForm.latDMmin )
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coordForm.latDMmin.value = latitude[1];
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if( coordForm.latDMH )
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coordForm.latDMH.value = latitude[2];
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}
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if( this.showMGRS ) {
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if( !this.MGRS )
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this.MGRS = new MGRS();
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coordForm.mgrs.value = this.MGRS.convert(evLonLat.lat,evLonLat.lon) ;
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}
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}
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/**
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* OpenLayers mouseout event listener.
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* @param evt OpenLayers mouse event
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*/
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this.mouseoutHandler = function(evt) {
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var coordForm = document.getElementById(this.formName);
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if( this.showPx ) {
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if( coordForm.px)
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coordForm.px.value = "";
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if( coordForm.py)
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coordForm.py.value = "";
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}
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if( this.showXY ) {
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if( coordForm.x)
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coordForm.x.value = "";
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if( coordForm.y)
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coordForm.y.value = "";
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}
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if( this.showLatLong ) {
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if( coordForm.longitude )
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coordForm.longitude.value = "";
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if( coordForm.latitude )
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coordForm.latitude.value = "";
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}
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if( this.showDMS ) {
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if( coordForm.longdeg )
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coordForm.longdeg.value = "";
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if( coordForm.longmin )
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coordForm.longmin.value = "";
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if( coordForm.longsec )
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coordForm.longsec.value = "";
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if( coordForm.longH )
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coordForm.longH.value = "";
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if( coordForm.latdeg )
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coordForm.latdeg.value = "";
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if( coordForm.latmin )
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coordForm.latmin.value = "";
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if( coordForm.latsec )
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coordForm.latsec.value = "";
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if( coordForm.latH )
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coordForm.latH.value = "";
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}
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if( this.showDM ) {
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if( coordForm.longDMdeg )
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coordForm.longDMdeg.value = "";
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if( coordForm.longDMmin )
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coordForm.longDMmin.value = "";
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if( coordForm.longDMH )
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coordForm.longDMH.value = "";
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if( coordForm.latDMdeg )
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coordForm.latDMdeg.value = "";
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if( coordForm.latDMmin )
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coordForm.latDMmin.value = "";
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if( coordForm.latDMH )
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coordForm.latDMH.value = "";
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}
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if( this.showMGRS ) {
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if( coordForm.mgrs )
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coordForm.mgrs.value = "";
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}
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}
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/**
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* Decimal to DMS conversion
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*/
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this.convertDMS = function(coordinate, type) {
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var coords = new Array();
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abscoordinate = Math.abs(coordinate)
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coordinatedegrees = Math.floor(abscoordinate);
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coordinateminutes = (abscoordinate - coordinatedegrees)/(1/60);
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tempcoordinateminutes = coordinateminutes;
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coordinateminutes = Math.floor(coordinateminutes);
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coordinateseconds = (tempcoordinateminutes - coordinateminutes)/(1/60);
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coordinateseconds = Math.round(coordinateseconds*10);
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coordinateseconds /= 10;
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if( coordinatedegrees < 10 )
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coordinatedegrees = "0" + coordinatedegrees;
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if( coordinateminutes < 10 )
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coordinateminutes = "0" + coordinateminutes;
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if( coordinateseconds < 10 )
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coordinateseconds = "0" + coordinateseconds;
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coords[0] = coordinatedegrees;
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coords[1] = coordinateminutes;
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coords[2] = coordinateseconds;
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coords[3] = this.getHemi(coordinate, type);
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return coords;
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}
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/**
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* Decimal to DM (degrees plus decimal minutes) conversion
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*/
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this.convertDM = function(coordinate, type) {
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var coords = new Array();
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abscoordinate = Math.abs(coordinate)
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coordinatedegrees = Math.floor(abscoordinate);
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coordinateminutes = (abscoordinate - coordinatedegrees)*60;
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coordinateminutes = Math.round(coordinateminutes*1000);
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coordinateminutes /= 1000;
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if( coordinatedegrees < 10 )
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coordinatedegrees = "0" + coordinatedegrees;
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if( coordinateminutes < 10 )
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coordinateminutes = "0" + coordinateminutes;
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coords[0] = coordinatedegrees;
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coords[1] = coordinateminutes;
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coords[2] = this.getHemi(coordinate, type);
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return coords;
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}
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/**
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* Return the hemisphere abbreviation for this coordinate.
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*/
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this.getHemi = function(coordinate, type) {
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var coordinatehemi = "";
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if (type == 'LAT') {
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if (coordinate >= 0) {
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coordinatehemi = "N";
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}
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else {
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coordinatehemi = "S";
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}
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}
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else if (type == 'LON') {
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if (coordinate >= 0) {
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coordinatehemi = "E";
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} else {
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coordinatehemi = "W";
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}
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}
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return coordinatehemi;
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}
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}
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