public override void OnKeyDown(int keyCode, int Shift)
{
if (keyCode == 27)
{
EnumDrawType drawType = this.DrawType;
if (drawType != EnumDrawType.circle)
{
if (drawType == EnumDrawType.polygon)
{
if (this.m_polygonFeedback != null)
{
this.m_polygonFeedback.Stop();
}
this.m_polygonFeedback = null;
}
}
else
{
if (this.m_circleFeedback != null)
{
this.m_circleFeedback.Stop();
}
this.m_circleFeedback = null;
}
this.m_mapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
}
}
public override void OnMouseDown(int Button, int Shift, int X, int Y)
{
if (Button == 1)
{
IPoint point = this.m_mapControl.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
switch (this.DrawType)
{
case EnumDrawType.circle:
if (this.m_circleFeedback == null)
{
this.m_circleFeedback = new NewCircleFeedbackClass();
this.m_circleFeedback.Display = this.m_mapControl.ActiveView.ScreenDisplay;
this.m_circleFeedback.Start(point);
}
break;
case EnumDrawType.ellipse:
this.DrawEllipse();
break;
case EnumDrawType.square:
if (this.m_rectangleFeedback == null)
{
this.m_rectangleFeedback = new NewRectangleFeedbackClass();
this.m_rectangleFeedback.Display = this.m_mapControl.ActiveView.ScreenDisplay;
this.m_rectangleFeedback.Start(point);
}
break;
case EnumDrawType.rectangle:
this.DrawRectangle();
break;
case EnumDrawType.polygon:
if (this.m_polygonFeedback == null)
{
this.m_polygonFeedback = new NewPolygonFeedbackClass();
this.m_polygonFeedback.Display = this.m_mapControl.ActiveView.ScreenDisplay;
ISimpleLineSymbol simpleLineSymbol = new SimpleLineSymbolClass();
this.m_polygonFeedback.Start(point);
}
else
{
this.m_polygonFeedback.AddPoint(point);
}
break;
}
}
}
public override void OnMouseUp(int Button, int Shift, int X, int Y)
{
IPoint point = this.m_mapControl.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
IGeometry geometry = null;
IElement element = null;
switch (this.DrawType)
{
case EnumDrawType.circle:
if (this.m_circleFeedback != null)
{
ICircularArc circularArc = this.m_circleFeedback.Stop();
this.m_circleFeedback = null;
if (circularArc == null || circularArc.IsPoint)
{
return;
}
geometry = MapAPI.ConvertCircularArcToPolygon(circularArc);
element = new CircleElementClass();
}
break;
case EnumDrawType.square:
if (this.m_rectangleFeedback != null)
{
geometry = this.m_rectangleFeedback.Stop(point);
if ((geometry as IPointCollection).PointCount == 2)
{
this.m_rectangleFeedback = null;
return;
}
this.m_rectangleFeedback = null;
element = new PolygonElementClass();
}
break;
}
if (geometry != null)
{
element.Geometry = geometry;
this.AppendNodeToTreeList(element);
}
}
