/// <summary>
/// Gets the appropriate <see cref="CursorToken"/> for a given point (in destination coordinates).
/// </summary>
/// <param name="point">the point (in destination coordinates).</param>
/// <returns>a <see cref="CursorToken"/> that is appropriate for the given point, or null.</returns>
public override CursorToken GetCursorToken(Point point)
{
if (_stretchIndicatorTokens.Count == 0)
{
return(null);
}
Platform.CheckForNullReference(ControlPoints, "_controlPoints");
int controlPointIndex = ControlPoints.HitTestControlPoint(point);
if (controlPointIndex < 0)
{
return(null);
}
ControlPoints.CoordinateSystem = CoordinateSystem.Destination;
PointF controlPoint = ControlPoints[controlPointIndex];
RectangleF containingRectangle = this.BoundingRectangle;
CompassPoints closestCompassPoint = _stretchIndicatorTokens.Keys[0];
float minDistance = DistanceToCompassPoint(controlPoint, containingRectangle, closestCompassPoint);
for (int i = 1; i < _stretchIndicatorTokens.Keys.Count; ++i)
{
CompassPoints compassPoint = _stretchIndicatorTokens.Keys[i];
float distance = DistanceToCompassPoint(controlPoint, containingRectangle, compassPoint);
if (distance <= minDistance)
{
closestCompassPoint = compassPoint;
minDistance = distance;
}
}
ControlPoints.ResetCoordinateSystem();
return(_stretchIndicatorTokens[closestCompassPoint]);
}