Software: Apache. PHP/5.5.15 uname -a: Windows NT SVR-DMZ 6.1 build 7600 (Windows Server 2008 R2 Enterprise Edition) i586 SYSTEM Safe-mode: OFF (not secure) C:\dmz\phpMyAdmin\js\openlayers\src\openlayers\lib\OpenLayers\Layer\ drwxrwxrwx |
Viewing file: MapGuide.js (18.14 KB) -rw-rw-rw- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) | /* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for * full list of contributors). Published under the Clear BSD license. * See http://svn.openlayers.org/trunk/openlayers/license.txt for the * full text of the license. */ /** * @requires OpenLayers/Request/XMLHttpRequest.js * @requires OpenLayers/Layer/Grid.js */ /** * Class: OpenLayers.Layer.MapGuide * Instances of OpenLayers.Layer.MapGuide are used to display * data from a MapGuide OS instance. * * Inherits from: * - <OpenLayers.Layer.Grid> */ OpenLayers.Layer.MapGuide = OpenLayers.Class(OpenLayers.Layer.Grid, { /** * APIProperty: isBaseLayer * {Boolean} Treat this layer as a base layer. Default is true. **/ isBaseLayer: true, /** * APIProperty: useHttpTile * {Boolean} use a tile cache exposed directly via a webserver rather than the * via mapguide server. This does require extra configuration on the Mapguide Server, * and will only work when singleTile is false. The url for the layer must be set to the * webserver path rather than the Mapguide mapagent. * See http://trac.osgeo.org/mapguide/wiki/CodeSamples/Tiles/ServingTilesViaHttp **/ useHttpTile: false, /** * APIProperty: singleTile * {Boolean} use tile server or request single tile image. **/ singleTile: false, /** * APIProperty: useOverlay * {Boolean} flag to indicate if the layer should be retrieved using * GETMAPIMAGE (default) or using GETDYNAMICOVERLAY requests. **/ useOverlay: false, /** * APIProperty: useAsyncOverlay * {Boolean} indicates if the MapGuide site supports the asynchronous * GETDYNAMICOVERLAY requests which is available in MapGuide Enterprise 2010 * and MapGuide Open Source v2.0.3 or higher. The newer versions of MG * is called asynchronously, allows selections to be drawn separately from * the map and offers styling options. * * With older versions of MapGuide, set useAsyncOverlay=false. Note that in * this case a synchronous AJAX call is issued and the mapname and session * parameters must be used to initialize the layer, not the mapdefinition * parameter. Also note that this will issue a synchronous AJAX request * before the image request can be issued so the users browser may lock * up if the MG Web tier does not respond in a timely fashion. **/ useAsyncOverlay: true, /** * Constant: TILE_PARAMS * {Object} Hashtable of default parameter key/value pairs for tiled layer */ TILE_PARAMS: { operation: 'GETTILEIMAGE', version: '1.2.0' }, /** * Constant: SINGLE_TILE_PARAMS * {Object} Hashtable of default parameter key/value pairs for untiled layer */ SINGLE_TILE_PARAMS: { operation: 'GETMAPIMAGE', format: 'PNG', locale: 'en', clip: '1', version: '1.0.0' }, /** * Constant: OVERLAY_PARAMS * {Object} Hashtable of default parameter key/value pairs for untiled layer */ OVERLAY_PARAMS: { operation: 'GETDYNAMICMAPOVERLAYIMAGE', format: 'PNG', locale: 'en', clip: '1', version: '2.0.0' }, /** * Constant: FOLDER_PARAMS * {Object} Hashtable of parameter key/value pairs which describe * the folder structure for tiles as configured in the mapguide * serverconfig.ini section [TileServiceProperties] */ FOLDER_PARAMS: { tileColumnsPerFolder: 30, tileRowsPerFolder: 30, format: 'png', querystring: null }, /** * Property: defaultSize * {<OpenLayers.Size>} Tile size as produced by MapGuide server **/ defaultSize: new OpenLayers.Size(300,300), /** * Constructor: OpenLayers.Layer.MapGuide * Create a new Mapguide layer, either tiled or untiled. * * For tiled layers, the 'groupName' and 'mapDefinition' values * must be specified as parameters in the constructor. * * For untiled base layers, specify either combination of 'mapName' and * 'session', or 'mapDefinition' and 'locale'. * * For older versions of MapGuide and overlay layers, set useAsyncOverlay * to false and in this case mapName and session are required parameters * for the constructor. * * NOTE: MapGuide OS uses a DPI value and degrees to meters conversion * factor that are different than the defaults used in OpenLayers, * so these must be adjusted accordingly in your application. * See the MapGuide example for how to set these values for MGOS. * * Parameters: * name - {String} Name of the layer displayed in the interface * url - {String} Location of the MapGuide mapagent executable * (e.g. http://localhost:8008/mapguide/mapagent/mapagent.fcgi) * params - {Object} hashtable of additional parameters to use. Some * parameters may require additional code on the server. The ones that * you may want to use are: * - mapDefinition - {String} The MapGuide resource definition * (e.g. Library://Samples/Gmap/Maps/gmapTiled.MapDefinition) * - locale - Locale setting * (for untiled overlays layers only) * - mapName - {String} Name of the map as stored in the MapGuide session. * (for untiled layers with a session parameter only) * - session - { String} MapGuide session ID * (for untiled overlays layers only) * - basemaplayergroupname - {String} GroupName for tiled MapGuide layers only * - format - Image format to be returned (for untiled overlay layers only) * - showLayers - {String} A comma separated list of GUID's for the * layers to display eg: 'cvc-xcv34,453-345-345sdf'. * - hideLayers - {String} A comma separated list of GUID's for the * layers to hide eg: 'cvc-xcv34,453-345-345sdf'. * - showGroups - {String} A comma separated list of GUID's for the * groups to display eg: 'cvc-xcv34,453-345-345sdf'. * - hideGroups - {String} A comma separated list of GUID's for the * groups to hide eg: 'cvc-xcv34,453-345-345sdf' * - selectionXml - {String} A selection xml string Some server plumbing * is required to read such a value. * options - {Ojbect} Hashtable of extra options to tag onto the layer; * will vary depending if tiled or untiled maps are being requested */ initialize: function(name, url, params, options) { OpenLayers.Layer.Grid.prototype.initialize.apply(this, arguments); // unless explicitly set in options, if the layer is transparent, // it will be an overlay if (options == null || options.isBaseLayer == null) { this.isBaseLayer = ((this.transparent != "true") && (this.transparent != true)); } if (options && options.useOverlay!=null) { this.useOverlay = options.useOverlay; } //initialize for untiled layers if (this.singleTile) { if (this.useOverlay) { OpenLayers.Util.applyDefaults( this.params, this.OVERLAY_PARAMS ); if (!this.useAsyncOverlay) { this.params.version = "1.0.0"; } } else { OpenLayers.Util.applyDefaults( this.params, this.SINGLE_TILE_PARAMS ); } } else { //initialize for tiled layers if (this.useHttpTile) { OpenLayers.Util.applyDefaults( this.params, this.FOLDER_PARAMS ); } else { OpenLayers.Util.applyDefaults( this.params, this.TILE_PARAMS ); } this.setTileSize(this.defaultSize); } }, /** * Method: clone * Create a clone of this layer * * Returns: * {<OpenLayers.Layer.MapGuide>} An exact clone of this layer */ clone: function (obj) { if (obj == null) { obj = new OpenLayers.Layer.MapGuide(this.name, this.url, this.params, this.getOptions()); } //get all additions from superclasses obj = OpenLayers.Layer.Grid.prototype.clone.apply(this, [obj]); return obj; }, /** * Method: addTile * Creates a tile, initializes it, and adds it to the layer div. * * Parameters: * bounds - {<OpenLayers.Bounds>} * position - {<OpenLayers.Pixel>} * * Returns: * {<OpenLayers.Tile.Image>} The added OpenLayers.Tile.Image */ addTile:function(bounds,position) { return new OpenLayers.Tile.Image(this, position, bounds, null, this.tileSize); }, /** * Method: getURL * Return a query string for this layer * * Parameters: * bounds - {<OpenLayers.Bounds>} A bounds representing the bbox * for the request * * Returns: * {String} A string with the layer's url and parameters and also * the passed-in bounds and appropriate tile size specified * as parameters. */ getURL: function (bounds) { var url; var center = bounds.getCenterLonLat(); var mapSize = this.map.getSize(); if (this.singleTile) { //set up the call for GETMAPIMAGE or GETDYNAMICMAPOVERLAY with //dynamic map parameters var params = { setdisplaydpi: OpenLayers.DOTS_PER_INCH, setdisplayheight: mapSize.h*this.ratio, setdisplaywidth: mapSize.w*this.ratio, setviewcenterx: center.lon, setviewcentery: center.lat, setviewscale: this.map.getScale() }; if (this.useOverlay && !this.useAsyncOverlay) { //first we need to call GETVISIBLEMAPEXTENT to set the extent var getVisParams = {}; getVisParams = OpenLayers.Util.extend(getVisParams, params); getVisParams.operation = "GETVISIBLEMAPEXTENT"; getVisParams.version = "1.0.0"; getVisParams.session = this.params.session; getVisParams.mapName = this.params.mapName; getVisParams.format = 'text/xml'; url = this.getFullRequestString( getVisParams ); OpenLayers.Request.GET({url: url, async: false}); } //construct the full URL url = this.getFullRequestString( params ); } else { //tiled version var currentRes = this.map.getResolution(); var colidx = Math.floor((bounds.left-this.maxExtent.left)/currentRes); colidx = Math.round(colidx/this.tileSize.w); var rowidx = Math.floor((this.maxExtent.top-bounds.top)/currentRes); rowidx = Math.round(rowidx/this.tileSize.h); if (this.useHttpTile){ url = this.getImageFilePath( { tilecol: colidx, tilerow: rowidx, scaleindex: this.resolutions.length - this.map.zoom - 1 }); } else { url = this.getFullRequestString( { tilecol: colidx, tilerow: rowidx, scaleindex: this.resolutions.length - this.map.zoom - 1 }); } } return url; }, /** * Method: getFullRequestString * getFullRequestString on MapGuide layers is special, because we * do a regular expression replace on ',' in parameters to '+'. * This is why it is subclassed here. * * Parameters: * altUrl - {String} Alternative base URL to use. * * Returns: * {String} A string with the layer's url appropriately encoded for MapGuide */ getFullRequestString:function(newParams, altUrl) { // use layer's url unless altUrl passed in var url = (altUrl == null) ? this.url : altUrl; // if url is not a string, it should be an array of strings, // in which case we will randomly select one of them in order // to evenly distribute requests to different urls. if (typeof url == "object") { url = url[Math.floor(Math.random()*url.length)]; } // requestString always starts with url var requestString = url; // create a new params hashtable with all the layer params and the // new params together. then convert to string var allParams = OpenLayers.Util.extend({}, this.params); allParams = OpenLayers.Util.extend(allParams, newParams); // ignore parameters that are already in the url search string var urlParams = OpenLayers.Util.upperCaseObject( OpenLayers.Util.getParameters(url)); for(var key in allParams) { if(key.toUpperCase() in urlParams) { delete allParams[key]; } } var paramsString = OpenLayers.Util.getParameterString(allParams); /* MapGuide needs '+' seperating things like bounds/height/width. Since typically this is URL encoded, we use a slight hack: we depend on the list-like functionality of getParameterString to leave ',' only in the case of list items (since otherwise it is encoded) then do a regular expression replace on the , characters to '+' */ paramsString = paramsString.replace(/,/g, "+"); if (paramsString != "") { var lastServerChar = url.charAt(url.length - 1); if ((lastServerChar == "&") || (lastServerChar == "?")) { requestString += paramsString; } else { if (url.indexOf('?') == -1) { //serverPath has no ? -- add one requestString += '?' + paramsString; } else { //serverPath contains ?, so must already have paramsString at the end requestString += '&' + paramsString; } } } return requestString; }, /** * Method: getImageFilePath * special handler to request mapguide tiles from an http exposed tilecache * * Parameters: * altUrl - {String} Alternative base URL to use. * * Returns: * {String} A string with the url for the tile image */ getImageFilePath:function(newParams, altUrl) { // use layer's url unless altUrl passed in var url = (altUrl == null) ? this.url : altUrl; // if url is not a string, it should be an array of strings, // in which case we will randomly select one of them in order // to evenly distribute requests to different urls. if (typeof url == "object") { url = url[Math.floor(Math.random()*url.length)]; } // requestString always starts with url var requestString = url; var tileRowGroup = ""; var tileColGroup = ""; if (newParams.tilerow < 0) { tileRowGroup = '-'; } if (newParams.tilerow == 0 ) { tileRowGroup += '0'; } else { tileRowGroup += Math.floor(Math.abs(newParams.tilerow/this.params.tileRowsPerFolder)) * this.params.tileRowsPerFolder; } if (newParams.tilecol < 0) { tileColGroup = '-'; } if (newParams.tilecol == 0) { tileColGroup += '0'; } else { tileColGroup += Math.floor(Math.abs(newParams.tilecol/this.params.tileColumnsPerFolder)) * this.params.tileColumnsPerFolder; } var tilePath = '/S' + Math.floor(newParams.scaleindex) + '/' + this.params.basemaplayergroupname + '/R' + tileRowGroup + '/C' + tileColGroup + '/' + (newParams.tilerow % this.params.tileRowsPerFolder) + '_' + (newParams.tilecol % this.params.tileColumnsPerFolder) + '.' + this.params.format; if (this.params.querystring) { tilePath += "?" + this.params.querystring; } requestString += tilePath; return requestString; }, /** * Method: calculateGridLayout * Generate parameters for the grid layout. This * * Parameters: * bounds - {<OpenLayers.Bound>} * extent - {<OpenLayers.Bounds>} * resolution - {Number} * * Returns: * Object containing properties tilelon, tilelat, tileoffsetlat, * tileoffsetlat, tileoffsetx, tileoffsety */ calculateGridLayout: function(bounds, extent, resolution) { var tilelon = resolution * this.tileSize.w; var tilelat = resolution * this.tileSize.h; var offsetlon = bounds.left - extent.left; var tilecol = Math.floor(offsetlon/tilelon) - this.buffer; var tilecolremain = offsetlon/tilelon - tilecol; var tileoffsetx = -tilecolremain * this.tileSize.w; var tileoffsetlon = extent.left + tilecol * tilelon; var offsetlat = extent.top - bounds.top + tilelat; var tilerow = Math.floor(offsetlat/tilelat) - this.buffer; var tilerowremain = tilerow - offsetlat/tilelat; var tileoffsety = tilerowremain * this.tileSize.h; var tileoffsetlat = extent.top - tilelat*tilerow; return { tilelon: tilelon, tilelat: tilelat, tileoffsetlon: tileoffsetlon, tileoffsetlat: tileoffsetlat, tileoffsetx: tileoffsetx, tileoffsety: tileoffsety }; }, CLASS_NAME: "OpenLayers.Layer.MapGuide" }); |
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