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Diffstat (limited to 'misc/openlayers/lib/OpenLayers/Layer/UTFGrid.js')
-rw-r--r-- | misc/openlayers/lib/OpenLayers/Layer/UTFGrid.js | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/misc/openlayers/lib/OpenLayers/Layer/UTFGrid.js b/misc/openlayers/lib/OpenLayers/Layer/UTFGrid.js deleted file mode 100644 index 878cb4b..0000000 --- a/misc/openlayers/lib/OpenLayers/Layer/UTFGrid.js +++ /dev/null @@ -1,184 +0,0 @@ -/* Copyright (c) 2006-2013 by OpenLayers Contributors (see authors.txt for - * full list of contributors). Published under the 2-clause BSD license. - * See license.txt in the OpenLayers distribution or repository for the - * full text of the license. */ - -/** - * @requires OpenLayers/Layer/XYZ.js - * @requires OpenLayers/Tile/UTFGrid.js - */ - -/** - * Class: OpenLayers.Layer.UTFGrid - * This Layer reads from UTFGrid tiled data sources. Since UTFGrids are - * essentially JSON-based ASCII art with attached attributes, they are not - * visibly rendered. In order to use them in the map, you must add a - * <OpenLayers.Control.UTFGrid> control as well. - * - * Example: - * - * (start code) - * var world_utfgrid = new OpenLayers.Layer.UTFGrid({ - * url: "/tiles/world_utfgrid/${z}/${x}/${y}.json", - * utfgridResolution: 4, - * displayInLayerSwitcher: false - * ); - * map.addLayer(world_utfgrid); - * - * var control = new OpenLayers.Control.UTFGrid({ - * layers: [world_utfgrid], - * handlerMode: 'move', - * callback: function(dataLookup) { - * // do something with returned data - * } - * }) - * (end code) - * - * - * Inherits from: - * - <OpenLayers.Layer.XYZ> - */ -OpenLayers.Layer.UTFGrid = OpenLayers.Class(OpenLayers.Layer.XYZ, { - - /** - * APIProperty: isBaseLayer - * Default is false, as UTFGrids are designed to be a transparent overlay layer. - */ - isBaseLayer: false, - - /** - * APIProperty: projection - * {<OpenLayers.Projection>} - * Source projection for the UTFGrids. Default is "EPSG:900913". - */ - projection: new OpenLayers.Projection("EPSG:900913"), - - /** - * Property: useJSONP - * {Boolean} - * Should we use a JSONP script approach instead of a standard AJAX call? - * - * Set to true for using utfgrids from another server. - * Avoids same-domain policy restrictions. - * Note that this only works if the server accepts - * the callback GET parameter and dynamically - * wraps the returned json in a function call. - * - * Default is false - */ - useJSONP: false, - - /** - * APIProperty: url - * {String} - * URL tempate for UTFGrid tiles. Include x, y, and z parameters. - * E.g. "/tiles/${z}/${x}/${y}.json" - */ - - /** - * APIProperty: utfgridResolution - * {Number} - * Ratio of the pixel width to the width of a UTFGrid data point. If an - * entry in the grid represents a 4x4 block of pixels, the - * utfgridResolution would be 4. Default is 2 (specified in - * <OpenLayers.Tile.UTFGrid>). - */ - - /** - * Property: tileClass - * {<OpenLayers.Tile>} The tile class to use for this layer. - * Defaults is <OpenLayers.Tile.UTFGrid>. - */ - tileClass: OpenLayers.Tile.UTFGrid, - - /** - * Constructor: OpenLayers.Layer.UTFGrid - * Create a new UTFGrid layer. - * - * Parameters: - * config - {Object} Configuration properties for the layer. - * - * Required configuration properties: - * url - {String} The url template for UTFGrid tiles. See the <url> property. - */ - initialize: function(options) { - OpenLayers.Layer.Grid.prototype.initialize.apply( - this, [options.name, options.url, {}, options] - ); - this.tileOptions = OpenLayers.Util.extend({ - utfgridResolution: this.utfgridResolution - }, this.tileOptions); - }, - - /** - * Method: createBackBuffer - * The UTFGrid cannot create a back buffer, so this method is overriden. - */ - createBackBuffer: function() {}, - - /** - * APIMethod: clone - * Create a clone of this layer - * - * Parameters: - * obj - {Object} Only used by a subclass of this layer. - * - * Returns: - * {<OpenLayers.Layer.UTFGrid>} An exact clone of this OpenLayers.Layer.UTFGrid - */ - clone: function (obj) { - if (obj == null) { - obj = new OpenLayers.Layer.UTFGrid(this.getOptions()); - } - - // get all additions from superclasses - obj = OpenLayers.Layer.Grid.prototype.clone.apply(this, [obj]); - - return obj; - }, - - /** - * APIProperty: getFeatureInfo - * Get details about a feature associated with a map location. The object - * returned will have id and data properties. If the given location - * doesn't correspond to a feature, null will be returned. - * - * Parameters: - * location - {<OpenLayers.LonLat>} map location - * - * Returns: - * {Object} Object representing the feature id and UTFGrid data - * corresponding to the given map location. Returns null if the given - * location doesn't hit a feature. - */ - getFeatureInfo: function(location) { - var info = null; - var tileInfo = this.getTileData(location); - if (tileInfo && tileInfo.tile) { - info = tileInfo.tile.getFeatureInfo(tileInfo.i, tileInfo.j); - } - return info; - }, - - /** - * APIMethod: getFeatureId - * Get the identifier for the feature associated with a map location. - * - * Parameters: - * location - {<OpenLayers.LonLat>} map location - * - * Returns: - * {String} The feature identifier corresponding to the given map location. - * Returns null if the location doesn't hit a feature. - */ - getFeatureId: function(location) { - var id = null; - var info = this.getTileData(location); - if (info.tile) { - id = info.tile.getFeatureId(info.i, info.j); - } - return id; - }, - - CLASS_NAME: "OpenLayers.Layer.UTFGrid" -}); |