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authorfriendica <info@friendica.com>2012-11-06 20:39:00 -0800
committerfriendica <info@friendica.com>2012-11-06 20:39:00 -0800
commit6db8b5bbd213693587de6d696e401d5b936b3b80 (patch)
treeacb3019ae59310c6fe14238cc698ed13e7907f07 /view/theme/diabook/js/jquery.mapquery.legend.js
parent295b865d065b12c6686592bd34739ac9d9b87978 (diff)
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All the themes except one are horked anway
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-/* Copyright (c) 2011 by MapQuery Contributors (see AUTHORS for
- * full list of contributors). Published under the MIT license.
- * See https://github.com/mapquery/mapquery/blob/master/LICENSE for the
- * full text of the license. */
-
-/**
-#jquery.mapquery.legend.js
-A plugin on mapquery.core to add a legend to a layer. It will check if the layer
-is within a valid extent and zoom range. And if not will return an error message.
-*/
-
-(function($, MQ) {
-$.extend( $.fn.mapQuery.defaults.layer.all, {
- legend: {
- url: '',
- msg: ''
- }
-});
-//possible error messages to display in the legend
-LEGEND_ERRORS= ['E_ZOOMOUT', 'E_ZOOMIN', 'E_OUTSIDEBOX'];
-$.extend(MQ.Layer.prototype, {
-/**
-###**layer**.`legend([options])`
-_version added 0.1_
-####**Description**: get/set the legend of a layer
-
-**options** url:url the url to the legend image
-
->Returns: {url:url, msg:'E\_ZOOMOUT' | 'E\_ZOOMIN' | 'E\_OUTSIDEBOX' | ''}
-
-
-The `.legend()` function allows us to attach a legend image to a layer. It will
-also check if the layer is not visible due to wrong extent or zoom level.
-It will return an error message which can be used to notify the user.
-
-
- var legend = layer.legend(); //get the current legend
- //set the legend url to legendimage.png
- layer.legend({url:'legendimage.png'})
-
- */
- //get/set the legend object
- legend: function(options) {
- //get the legend object
- var center = this.map.center();
- if (arguments.length===0) {
- this._checkZoom(center);
- //if zoom = ok, check box
- if(this.options.legend.msg==''){
- this._checkBox(center);
- }
- return this.options.legend;
- }
- //set the legend url
- if (options.url!==undefined) {
- this.options.legend.url = options.url;
- return this.options.legend;
- }
- },
- //Check if the layer has a maximum box set and if the current box
- //is outside these settings, set the legend.msg accordingly
- _checkBox: function(center){
- var maxExtent = this.options.maxExtent;
- if(maxExtent!==undefined) {
- var mapBounds = new OpenLayers.Bounds(
- center.box[0],center.box[1],center.box[2],center.box[3]);
- var layerBounds = new OpenLayers.Bounds(
- maxExtent[0],maxExtent[1],maxExtent[2],maxExtent[3]);
- var inside = layerBounds.containsBounds(mapBounds, true);
- this.options.legend.msg = inside?'':LEGEND_ERRORS[2];
- }
- },
- //Check if the layer has a minimum or maximum zoom set and if the
- //current zoom is outside these settings, set the legend.msg accordingly
- _checkZoom: function(center){
- var zoom = center.zoom;
- var maxZoom = this.options.maxZoom;
- var minZoom = this.options.minZoom;
- this.options.legend.msg=(
- maxZoom!==undefined&&maxZoom<zoom)? LEGEND_ERRORS[0]:'';
- this.options.legend.msg=(
- minZoom!==undefined&&minZoom>zoom)? LEGEND_ERRORS[1]:'';
- }
-
-});
-
-})(jQuery, $.MapQuery);