public void NextExtent()
{
if (_currentExtentIndex < _extentHistory.Count - 1)
{
_currentExtentIndex++;
if (_currentExtentIndex == (_extentHistory.Count - 1))
{
if (NavigateExtentDoneEvent != null)
{
NavigateExtentDoneEventArgs args = new NavigateExtentDoneEventArgs();
args.navigateExtentOn = NavigateExtentFocus.Next;
args.nextEnabled = false;
NavigateExtentDoneEvent(this, args);
}
}
_newExtent = false;
_mapView.SetView(_extentHistory[_currentExtentIndex]);
if (NavigateExtentDoneEvent != null)
{
NavigateExtentDoneEventArgs args = new NavigateExtentDoneEventArgs();
args.navigateExtentOn = NavigateExtentFocus.Previous;
args.previousEnabled = true;
NavigateExtentDoneEvent(this, args);
}
}
}
void _mapView_NavigationCompleted(object sender, EventArgs e)
{
//////////////Next and previous extents handling///////////////////
if (_extentHistory.Count == 0)
{
_extentHistory.Add(_mapView.Extent.Clone());
return;
}
if (_newExtent)
{
_currentExtentIndex++;
if (_extentHistory.Count - _currentExtentIndex > 0)
{
_extentHistory.RemoveRange(_currentExtentIndex, (_extentHistory.Count - _currentExtentIndex));
}
_extentHistory.Add(_mapView.Extent.Clone());
if (NavigateExtentDoneEvent != null)
{
NavigateExtentDoneEventArgs args = new NavigateExtentDoneEventArgs();
args.navigateExtentOn = NavigateExtentFocus.Both;
args.nextEnabled = false;
args.previousEnabled = true;
NavigateExtentDoneEvent(this, args);
}
}
else
{
_newExtent = true;
}
}
void _exMap_NavigateExtentDoneEvent(object sender, NavigateExtentDoneEventArgs e)
{
if (e.navigateExtentOn == NavigateExtentFocus.Both)
{
if (e.nextEnabled)
{
_nextBtnOpacity = 1;
}
else
{
_nextBtnOpacity = 0.3;
}
if (e.previousEnabled)
{
_prevBtnOpacity = 1;
}
else
{
_prevBtnOpacity = 0.3;
}
}
else if (e.navigateExtentOn == NavigateExtentFocus.Next)
{
if (e.nextEnabled)
{
_nextBtnOpacity = 1;
}
else
{
_nextBtnOpacity = 0.3;
}
}
else
{
if (e.previousEnabled)
{
_prevBtnOpacity = 1;
}
else
{
_prevBtnOpacity = 0.3;
}
}
}
