protected override void OnMouseDown(System.Windows.Forms.MouseEventArgs e)
{
base.OnMouseDown(e);
// Start dragging ?
if (e.Button == MouseButtons.Left)
{
this.Capture = true;
if (rcView.Contains(e.X, e.Y))
{
drag = new ViewDrag(this, e.X, e.Y);
}
else
{
// Move the viewport to the click points
Rectangle movedView = rcView;
movedView.X = e.X - movedView.Width / 2;
movedView.Y = e.Y - movedView.Height / 2;
Viewport = movedView;
// Start dragging
drag = new ViewDrag(this, e.X, e.Y);
}
}
else if (e.Button == MouseButtons.Right)
{
this.Capture = false;
if (drag != null)
{
drag.Cancel();
drag = null;
}
}
}
