/// <summary>
/// Toggles between measure modes and starts SketchEditor when not already started for length and area.
/// </summary>
/// <param name="sender">Toggle button that raised click event</param>
/// <param name="e">Contains information or event data associated with routed event</param>
private async void OnToggleMeasureMode(object sender, RoutedEventArgs e)
{
var toggleButton = (ToggleButton)sender;
Mode = toggleButton.IsChecked.HasValue && toggleButton.IsChecked.Value ?
(toggleButton == _measureLengthButton ? MeasureToolbarMode.Line :
toggleButton == _measureAreaButton ? MeasureToolbarMode.Area :
toggleButton == _measureFeatureButton ? MeasureToolbarMode.Feature : MeasureToolbarMode.None) :
MeasureToolbarMode.None;
if (MapView.SketchEditor.Geometry == null && (Mode == MeasureToolbarMode.Line || Mode == MeasureToolbarMode.Area))
{
try
{
var creationMode = Mode == MeasureToolbarMode.Line ? SketchCreationMode.Polyline : SketchCreationMode.Polygon;
var geometry = await MapView.SketchEditor.StartAsync(creationMode);
DisplayResult(geometry);
}
catch (TaskCanceledException)
{
}
catch (Exception ex)
{
System.Diagnostics.Debug.WriteLine(ex.Message, ex.GetType().Name);
}
}
}
public override void OnApplyTemplate()
#endif
{
base.OnApplyTemplate();
_measureLengthButton = GetTemplateChild("MeasureLength") as ToggleButton;
if (_measureLengthButton != null)
{
_measureLengthButton.Click += OnToggleMeasureMode;
}
_measureAreaButton = GetTemplateChild("MeasureArea") as ToggleButton;
if (_measureAreaButton != null)
{
_measureAreaButton.Click += OnToggleMeasureMode;
}
_measureFeatureButton = GetTemplateChild("MeasureFeature") as ToggleButton;
if (_measureFeatureButton != null)
{
_measureFeatureButton.Click += OnToggleMeasureMode;
}
_clearButton = GetTemplateChild("Clear") as ButtonBase;
if (_clearButton != null)
{
_measureFeatureResultOverlay.Graphics.CollectionChanged += (s, e) =>
{
if (Mode == MeasureToolbarMode.Feature)
{
_clearButton.IsEnabled = _measureFeatureResultOverlay.Graphics.Any();
AddMeasureFeatureResultOverlay(MapView);
}
};
_clearButton.Click += OnClear;
}
_measureResultTextBlock = GetTemplateChild("MeasureResult") as TextBlock;
_linearUnitsSelector = GetTemplateChild("LinearUnitsSelector") as UIElement;
_areaUnitsSelector = GetTemplateChild("AreaUnitsSelector") as UIElement;
if (LinearUnits == null || !LinearUnits.Any())
{
LinearUnits = new LinearUnit[]
{
Geometry.LinearUnits.Centimeters,
Geometry.LinearUnits.Feet,
Geometry.LinearUnits.Inches,
Geometry.LinearUnits.Kilometers,
Geometry.LinearUnits.Meters,
Geometry.LinearUnits.Miles,
Geometry.LinearUnits.Millimeters,
Geometry.LinearUnits.NauticalMiles,
Geometry.LinearUnits.Yards
};
}
if (SelectedLinearUnit == null)
{
SelectedLinearUnit = LinearUnits.Any(u => u == Geometry.LinearUnits.Meters) ?
Geometry.LinearUnits.Meters :
LinearUnits.FirstOrDefault();
}
if (AreaUnits == null || !AreaUnits.Any())
{
AreaUnits = new AreaUnit[]
{
Geometry.AreaUnits.Acres,
Geometry.AreaUnits.Hectares,
Geometry.AreaUnits.SquareCentimeters,
Geometry.AreaUnits.SquareDecimeters,
Geometry.AreaUnits.SquareFeet,
Geometry.AreaUnits.SquareKilometers,
Geometry.AreaUnits.SquareMeters,
Geometry.AreaUnits.SquareMiles,
Geometry.AreaUnits.SquareMillimeters,
Geometry.AreaUnits.SquareYards
};
}
if (SelectedAreaUnit == null)
{
SelectedAreaUnit = AreaUnits.Any(u => u == Geometry.AreaUnits.SquareMiles) ?
Geometry.AreaUnits.SquareMiles :
AreaUnits.FirstOrDefault();
}
if (LineSketchEditor == null)
{
LineSketchEditor = new SketchEditor();
}
if (AreaSketchEditor == null)
{
AreaSketchEditor = new SketchEditor();
}
if (SelectionLineSymbol == null)
{
SelectionLineSymbol = LineSketchEditor?.Style?.LineSymbol;
}
if (SelectionFillSymbol == null)
{
SelectionFillSymbol = AreaSketchEditor?.Style?.FillSymbol;
}
Mode = MeasureToolbarMode.None;
PrepareMeasureMode();
}
