108 lines
3.3 KiB
JavaScript
108 lines
3.3 KiB
JavaScript
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/* Copyright (c) 2011 by MapQuery Contributors (see AUTHORS for
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* full list of contributors). Published under the MIT license.
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* See https://github.com/mapquery/mapquery/blob/master/LICENSE for the
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* full text of the license. */
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/**
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#jquery.mapquery.mqMousePosition.js
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The file containing the mqMousePosition Widget
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### *$('selector')*.`mqMousePosition([options])`
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_version added 0.1_
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####**Description**: create a widget to show the location under the mouse pointer
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+ **options**
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- **map**: the mapquery instance
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- **precision**: the number of decimals (default 2)
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- **x**: the label for the x-coordinate (default x)
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- **y**: the label for the y-coordinate (default y)
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>Returns: widget
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The mqMousePosition allows us to show the coordinates under the mouse pointer
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$('#mousepointer').mqMousePointer({
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map: '#map'
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});
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*/
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(function($) {
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$.template('mqMousePosition',
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'<div class="mq-mouseposition ui-widget ui-helper-clearfix ">'+
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'<span class="ui-widget-content ui-helper-clearfix ui-corner-all ui-corner-all">'+
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'<div id="mq-mouseposition-x" class="mq-mouseposition-coordinate">'+
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'</div><div id="mq-mouseposition-y" class="mq-mouseposition-coordinate">'+
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'</div></div></span>');
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$.widget("mapQuery.mqMousePosition", {
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options: {
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// The MapQuery instance
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map: undefined,
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// The number of decimals for the coordinates
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// default: 2
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// TODO: JCB20110630 use dynamic precision based on the pixel
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// resolution, no need to configure precision
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precision: 2,
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// The label of the x-value
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// default: 'x'
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x: 'x',
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// The label of the y-value
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// default: 'y'
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y: 'y'
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},
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_create: function() {
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var map;
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var self = this;
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var element = this.element;
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var mousepos;
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//get the mapquery object
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map = $(this.options.map).data('mapQuery');
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map.bind("mousemove",
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{widget:self,map:map},
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self._onMouseMove);
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$.tmpl('mqMousePosition',{
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mouseposition:mousepos
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}).appendTo(element);
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},
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_destroy: function() {
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this.element.removeClass(' ui-widget ui-helper-clearfix ' +
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'ui-corner-all')
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.empty();
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},
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_mouseMoved: function(data, element, map) {
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var x = data.layerX;
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var y = data.layerY;
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var mapProjection = map.options.projection;
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var displayProjection = map.options.projection;
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//if the coordinates should be displayed in something else,
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//set them via the map displayProjection option
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var pos = map.olMap.getLonLatFromLayerPx(new OpenLayers.Pixel(x,y));
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if(map.options.displayProjection) {
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displayProjection = map.options.displayProjection;
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pos=pos.transform(
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new OpenLayers.Projection(mapProjection),
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new OpenLayers.Projection(displayProjection));
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}
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$("#mq-mouseposition-x", element).html(
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this.options.x+': '+pos.lon.toFixed(this.options.precision));
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$("#mq-mouseposition-y", element).html(
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this.options.y+': '+pos.lat.toFixed(this.options.precision));
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},
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_onMouseMove: function(evt, data) {
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evt.data.widget._mouseMoved(data,evt.data.control,evt.data.map);
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}
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});
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})(jQuery);
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