/// <summary>
/// 添加点图元
/// </summary>
/// <param name="kml">kml对象</param>
/// <param name="gmapOverlay">图层</param>
/// <returns></returns>
public Core.Interface.IMFElement CreateElement(Kml kml, global::GMap.NET.WindowsForms.GMapOverlay gmapOverlay)
{
if (overlay == null)
{
overlay = gmapOverlay;
overlay.Control.OnMarkerEnter += Control_OnMarkerEnter;
overlay.Control.OnMarkerLeave += Control_OnMarkerLeave;
}
KmlPicture kmlPicture = kml.Placemark.Graph as KmlPicture;
if (kmlPicture == null)
{
return(null);
}
if (kmlPicture.Position == null)
{
return(null);
}
PointLatLng p = new PointLatLng(kmlPicture.Position.Lat, kmlPicture.Position.Lng, kmlPicture.Position.Alt);
// 位置和图片
Picture_GMap moveObj = new Picture_GMap(p, kmlPicture, kml.Placemark.Name);
// Tip
if (!string.IsNullOrEmpty(kmlPicture.TipText))
{
moveObj.ToolTipText = kmlPicture.TipText;
moveObj.ToolTipMode = MarkerTooltipMode.OnMouseOver;
moveObj.ToolTip.Format.Alignment = System.Drawing.StringAlignment.Near; // Tip文字左对齐
}
// 添加图元到图层
if (gmapOverlay.Control.InvokeRequired)
{
gmapOverlay.Control.BeginInvoke(new Action(delegate
{
gmapOverlay.Markers.Add(moveObj);
}));
}
else
{
gmapOverlay.Markers.Add(moveObj);
}
return(moveObj);
}
/// <summary>
/// 进入目标事件
/// </summary>
/// <param name="item"></param>
private void Control_OnMarkerEnter(GMapMarker item)
{
Picture_GMap gmapMoveObj = item as Picture_GMap;
if (gmapMoveObj == null)
{
return;
}
switch (gmapMoveObj.LabelShowType)
{
case ShowTypeEnum.No:
gmapMoveObj.CloseMapLabel();
break;
case ShowTypeEnum.MouseHover:
gmapMoveObj.InitMapLabel();
break;
case ShowTypeEnum.Always:
gmapMoveObj.InitMapLabel();
break;
}
}
/// <summary>
/// 离开目标事件
/// </summary>
/// <param name="item"></param>
private void Control_OnMarkerLeave(GMapMarker item)
{
Picture_GMap gmapMoveObj = item as Picture_GMap;
if (gmapMoveObj == null)
{
return;
}
switch (gmapMoveObj.LabelShowType)
{
case ShowTypeEnum.No: //不显示
gmapMoveObj.CloseMapLabel();
break;
case ShowTypeEnum.MouseHover: //移上显示
gmapMoveObj.CloseMapLabel();
break;
case ShowTypeEnum.Always: //永久显示
//gmapPoint.InitToolTip();
break;
}
}