/// <summary>Returns a new stroke that has a deep copy.</summary>
/// <remarks>Deep copied data includes points, point description, drawing attributes, and transform</remarks>
/// <returns>Deep copy of current stroke</returns>
public virtual Stroke Clone()
{
//
// use MemberwiseClone, which will instance the most derived type
// We use this instead of Activator.CreateInstance because it does not
// require ReflectionPermission. One thing to note, all references
// are shared, including event delegates, so we need to set those to null
//
Stroke clone = (Stroke)this.MemberwiseClone();
//
// null the delegates in the cloned strokes
//
clone.DrawingAttributesChanged = null;
clone.DrawingAttributesReplaced = null;
clone.StylusPointsReplaced = null;
clone.StylusPointsChanged = null;
clone.PropertyDataChanged = null;
clone.Invalidated = null;
clone._propertyChanged = null;
//Clone is also called from Stroke.Copy internally for point
//erase. In that case, we don't want to clone the StylusPoints
//because they will be replaced after we call
if (_cloneStylusPoints)
{
clone._stylusPoints = _stylusPoints.Clone();
}
clone._drawingAttributes = _drawingAttributes.Clone();
if (_extendedProperties != null)
{
clone._extendedProperties = _extendedProperties.Clone();
}
//set up listeners
clone.Initialize();
//
// copy state
//
Debug.Assert(_cachedGeometry == null || _cachedGeometry.IsFrozen);
//we don't need to cache if this is frozen
//if (null != _cachedGeometry)
//{
// clone._cachedGeometry = _cachedGeometry.Clone();
//}
//don't need to clone these, they are value types
//and are copied by MemberwiseClone
//_isSelected
//_drawAsHollow
//_cachedBounds
//this need to be reset
clone._cloneStylusPoints = true;
return(clone);
}