我尝试使用以下代码在OpenStreetMaps上处理双击鼠标事件:
var map = new OpenLayers.Map("basicMap");
var mapnik = new OpenLayers.Layer.OSM();
var fromProjection = new OpenLayers.Projection("EPSG:4326");
// Transform from WGS 1984
var toProjection = new OpenLayers.Projection("EPSG:900913");
// to Spherical Mercator Projection
var position = new OpenLayers.LonLat(13.41,52.52).transform(fromProjection, toProjection);
var zoom = 15;
map.addLayer(mapnik);
map.setCenter(position, zoom );
var markers = new OpenLayers.Layer.Markers( "Markers" );
map.addLayer(markers);
OpenLayers.Control.Click = OpenLayers.Class(OpenLayers.Control,
{
defaultHandlerOptions:
{
'single': true,
'double': true,
'pixelTolerance': 0,
'stopSingle': false,
'stopDouble': false
},
initialize: function(options)
{
this.handlerOptions = OpenLayers.Util.extend({},this.defaultHandlerOptions);
OpenLayers.Control.prototype.initialize.apply(this, arguments);
this.handler = new OpenLayers.Handler.Click(this, {'click': this.trigger}, this.handlerOptions);
},
trigger: function(e)
{
var lonlat = map.getLonLatFromViewPortPx(e.xy);
alert("clicked");
alert("Lat, Lon : " + lonlat.lat + ", " + lonlat.lng);
markers.addMarker(new OpenLayers.Marker(lonlat));
},
touchstart: function(e)
{
console.log();
},
touchend: function(e)
{
console.log();
},
handleSingle: function(e)
{
console.log();
}
});
var control = new OpenLayers.Control.Click();
map.addControl(control);
control.activate();
然而,经过一些测试。消息"点击"虽然在地图显示正确时我没有在控制台上发现任何错误,但从未显示过。
上面的代码中有什么问题吗?怎么可能解决这个问题?
注意:我使用的是Ionic框架。
非常感谢任何帮助。
谢谢。
答案 0 :(得分:2)
OpenLayers.Map不会触发点击事件。
你应该定义一个“Click”控件(在OpenLayers 2中缺失),就像这样(来自http://dev.openlayers.org/examples/click.html)
OpenLayers.Control.Click = OpenLayers.Class(OpenLayers.Control, {
defaultHandlerOptions: {
'single': true,
'double': false,
'pixelTolerance': 0,
'stopSingle': false,
'stopDouble': false
},
initialize: function(options) {
this.handlerOptions = OpenLayers.Util.extend(
{}, this.defaultHandlerOptions
);
OpenLayers.Control.prototype.initialize.apply(
this, arguments
);
this.handler = new OpenLayers.Handler.Click(
this, {
'click': this.trigger
}, this.handlerOptions
);
},
trigger: function(e) {
var lonlat = map.getLonLatFromPixel(e.xy);
alert("You clicked near " + lonlat.lat + " N, " +
+ lonlat.lon + " E");
}
});
实现触发器功能,将逻辑放入其中,或触发单击事件。 然后在代码中使用控件
var control = new OpenLayers.Control.Click();
map.addControl(control);
control.activate();
您可以在此处找到点击处理程序选项 http://dev.openlayers.org/apidocs/files/OpenLayers/Handler/Click-js.html
例如,如果您需要处理双击,则应将double属性更改为true。