我正在尝试使用以下代码处理 OpenStreetMaps 上的双击鼠标事件:
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();
但是,经过一些测试后。虽然 map 正确显示,但我在控制台上没有发现任何错误,但从未显示“clicked”消息。
那么上面的代码有什么问题吗?如何解决这个问题?
注意:我使用的是 Ionic 框架。
任何帮助将不胜感激。
谢谢。
最佳答案
OpenLayers.Map 不会触发点击事件。
您应该定义一个“Click”控件(OpenLayers 2 中缺少),如下所示(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");
}
});
通过将逻辑放入其中或触发点击事件来实现触发器功能。 然后在代码中使用该控件
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。
关于javascript - ionic : mouse event within OpenLayers wasn't handled,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37779867/