/// <summary>
/// Moves the <see cref="ArrowGraphic"/> by a specified delta.
/// </summary>
/// <remarks>
/// <see cref="IGraphic.CoordinateSystem"/> determines whether this property is in source or destination coordinates.
/// </remarks>
/// <param name="delta">The offset by which the graphic is to be moved.</param>
public override void Move(SizeF delta)
{
_enablePointChangeEvents = false;
try
{
base.Move(delta);
// force realignment the arrowhead
_arrowhead.Point = _shaft.Point2;
this.UpdateArrowheadAngle();
}
finally
{
_enablePointChangeEvents = true;
}
// trigger events
_shaft.CoordinateSystem = CoordinateSystem.Source;
try
{
this.OnShaftPoint1Changed(this, new PointChangedEventArgs(_shaft.Point1));
this.OnShaftPoint2Changed(this, new PointChangedEventArgs(_shaft.Point2));
}
finally
{
_shaft.ResetCoordinateSystem();
}
}
private void OnPointsItemAdded(object sender, IndexEventArgs e)
{
if (_points.Count >= 2)
{
LinePrimitive line = new LinePrimitive();
line.Color = _color;
line.LineStyle = _lineStyle;
line.CoordinateSystem = this.CoordinateSystem;
try
{
if (e.Index == _points.Count - 1)
{
_lines.Graphics.Add(line);
line.Point1 = _points[e.Index - 1];
line.Point2 = _points[e.Index];
}
else
{
_lines.Graphics.Insert(e.Index, line);
line.Point1 = _points[e.Index];
line.Point2 = _points[e.Index + 1];
if (e.Index > 0)
{
((LinePrimitive)_lines.Graphics[e.Index - 1]).Point2 = _points[e.Index];
}
}
}
finally
{
line.ResetCoordinateSystem();
}
}
base.NotifyVisualStateChanged("Points");
}
