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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.mqMousePosition.js
+The file containing the mqMousePosition Widget
+
+### *$('selector')*.`mqMousePosition([options])`
+_version added 0.1_
+####**Description**: create a widget to show the location under the mouse pointer
+
+ + **options**
+ - **map**: the mapquery instance
+ - **precision**: the number of decimals (default 2)
+ - **x**: the label for the x-coordinate (default x)
+ - **y**: the label for the y-coordinate (default y)
+
+
+>Returns: widget
+
+
+The mqMousePosition allows us to show the coordinates under the mouse pointer
+
+
+ $('#mousepointer').mqMousePointer({
+ map: '#map'
+ });
+
+ */
+(function($) {
+$.template('mqMousePosition',
+ '<div class="mq-mouseposition ui-widget ui-helper-clearfix ">'+
+ '<span class="ui-widget-content ui-helper-clearfix ui-corner-all ui-corner-all">'+
+ '<div id="mq-mouseposition-x" class="mq-mouseposition-coordinate">'+
+ '</div><div id="mq-mouseposition-y" class="mq-mouseposition-coordinate">'+
+ '</div></div></span>');
+
+$.widget("mapQuery.mqMousePosition", {
+ options: {
+ // The MapQuery instance
+ map: undefined,
+
+ // The number of decimals for the coordinates
+ // default: 2
+ // TODO: JCB20110630 use dynamic precision based on the pixel
+ // resolution, no need to configure precision
+ precision: 2,
+
+ // The label of the x-value
+ // default: 'x'
+ x: 'x',
+ // The label of the y-value
+ // default: 'y'
+ y: 'y'
+
+ },
+ _create: function() {
+ //get the mapquery object
+ this.map = $(this.options.map).data('mapQuery');
+
+ this.map.element.bind('mousemove', {widget: this}, this._onMousemove);
+ $.tmpl('mqMousePosition', {}).appendTo(this.element);
+
+ },
+ _destroy: function() {
+ this.element.removeClass('ui-widget ui-helper-clearfix ' +
+ 'ui-corner-all')
+ .empty();
+ },
+ _onMousemove: function(evt) {
+ var self = evt.data.widget;
+ var x = evt.pageX;
+ var y = evt.pageY;
+ var mapProjection = new OpenLayers.Projection(self.map.projection);
+ var displayProjection = new OpenLayers.Projection(
+ self.map.displayProjection);
+ var pos = self.map.olMap.getLonLatFromLayerPx(
+ new OpenLayers.Pixel(x, y));
+ //if the coordinates should be displayed in something else,
+ //set them via the map displayProjection option
+ if(!mapProjection.equals(self.map.displayProjection)) {
+ pos = pos.transform(mapProjection, displayProjection);
+ }
+ $("#id_diabook_ELPosX", document.element).val(
+ self.options.x + pos.lon.toFixed(self.options.precision));
+ $("#id_diabook_ELPosY", document.element).val(
+ self.options.y + pos.lat.toFixed(self.options.precision));
+ }
+});
+})(jQuery);