private void NavigateToButton_Click(object sender, EventArgs e)
{
if (cbCity.SelectedIndex == -1)
{
return;
}
// Find the map point label corresponding to the selected city
NLayer citiesLayer = (NLayer)document.Layers.GetChildByName("cities");
NMapLabelsShape mapLabelsShape = (NMapLabelsShape)citiesLayer.GetChildAt(0);
NMapPointLabel pointLabel = (NMapPointLabel)mapLabelsShape.MapLabels.GetChildByName(cbCity.Text);
if (pointLabel == null)
{
return;
}
view.Zoom(2.0f, pointLabel.PinPoint, true);
if (m_ZoomedCity != null)
{
m_ZoomedCity.StyleSheetName = String.Empty;
}
pointLabel.StyleSheetName = "Zoomed City";
m_ZoomedCity = pointLabel;
}
void INCustomRequestCallback.OnCustomRequestCallback(NAspNetThinWebControl control, NRequestContext context, string argument)
{
NThinDiagramControl diagramControl = (NThinDiagramControl)control;
NDrawingDocument document = diagramControl.Document;
string[] args = argument.Split(',');
string cityName = args[0];
float x = Single.Parse(args[1], CultureInfo.InvariantCulture);
float y = Single.Parse(args[2], CultureInfo.InvariantCulture);
if (document.Tag is NPointElement)
{
((NPointElement)document.Tag).StyleSheetName = String.Empty;
document.Tag = null;
}
NLayer cityLayer = diagramControl.Document.Layers.GetChildByName("cities") as NLayer;
if (cityLayer != null)
{
// Apply the new style to the newly zoomed city
NMapLabelsShape labelsShape = (NMapLabelsShape)cityLayer.GetChildAt(0);
NMapPointLabel city = (NMapPointLabel)labelsShape.MapLabels.GetChildByName(cityName);
city.StyleSheetName = "ZoomedCity";
// Remember the currently highlighted city in the document's tag
document.Tag = city;
}
diagramControl.View.Layout = CanvasLayout.Normal;
diagramControl.Zoom(2, new NPointF(x, y));
}
