protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (e.LeftButton != MouseButtonState.Pressed)
{
_start = new Point?();
}
if (_start.HasValue)
{
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(this);
if (adornerLayer.IsNotNull())
{
adornerLayer.Add(new SSSelectionAdorner(this, _start));
}
}
if (e.LeftButton != MouseButtonState.Pressed || _moving)
{
return;
}
_moving = true;
}
protected override void OnMouseUp(MouseButtonEventArgs e)
{
if (IsMouseCaptured)
{
ReleaseMouseCapture();
Mouse.OverrideCursor = (Cursor)null;
}
AdornerLayer adornerLayer = AdornerLayer.GetAdornerLayer(_canvas);
if (adornerLayer.IsNotNull())
{
var pt = _canvas.TranslatePoint(_start.Value, adornerLayer);
adornerLayer.Remove(this);
_canvas.AddSelection(pt,
Math.Abs(_start.Value.X - _end.Value.X),
Math.Abs(_start.Value.Y - _end.Value.Y));
_start = null;
_end = null;
}
e.Handled = true;
}
