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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() {
var map;
var self = this;
var element = this.element;
var mousepos;
//get the mapquery object
map = $(this.options.map).data('mapQuery');
map.bind("mousemove",
{widget:self,map:map},
self._onMouseMove);
$.tmpl('mqMousePosition',{
mouseposition:mousepos
}).appendTo(element);
},
_destroy: function() {
this.element.removeClass(' ui-widget ui-helper-clearfix ' +
'ui-corner-all')
.empty();
},
_mouseMoved: function(data, element, map) {
var x = data.layerX;
var y = data.layerY;
var mapProjection = map.options.projection;
var displayProjection = map.options.projection;
//if the coordinates should be displayed in something else,
//set them via the map displayProjection option
var pos = map.olMap.getLonLatFromLayerPx(new OpenLayers.Pixel(x,y));
if(map.options.displayProjection) {
displayProjection = map.options.displayProjection;
pos=pos.transform(
new OpenLayers.Projection(mapProjection),
new OpenLayers.Projection(displayProjection));
}
$("#mq-mouseposition-x", element).html(
this.options.x+': '+pos.lon.toFixed(this.options.precision));
$("#mq-mouseposition-y", element).html(
this.options.y+': '+pos.lat.toFixed(this.options.precision));
},
_onMouseMove: function(evt, data) {
evt.data.widget._mouseMoved(data,evt.data.control,evt.data.map);
}
});
})(jQuery);
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