private void GraphForm_Paint(object sender, PaintEventArgs e)
{
Point viewpoint = new Point(hScrollBar.Value, vScrollBar.Value - toolStripHeight);
graph.Draw(e.Graphics, viewpoint);
if (connectingPin != null && connectingPin.Connection==null)
{
Pen pen = otherPin==null ? Pens.Red : Pens.LightGreen;
Point mstart = movingStart;
mstart.X -= viewpoint.X;
mstart.Y -= viewpoint.Y;
Point mpos = mousepos;
mpos.X -= viewpoint.X;
mpos.Y -= viewpoint.Y;
e.Graphics.DrawLine(pen, mstart, mpos);
}
if (selecting)
{
Point mstart = movingStart;
mstart.X -= viewpoint.X;
mstart.Y -= viewpoint.Y;
Point mpos = mousepos;
mpos.X -= viewpoint.X;
mpos.Y -= viewpoint.Y;
Rectangle rc = new Rectangle(Math.Min(mstart.X, mpos.X), Math.Min(mstart.Y, mpos.Y), Math.Abs(mstart.X - mpos.X), Math.Abs(mstart.Y - mpos.Y));
e.Graphics.DrawRectangle(Pens.Cyan, rc);
}
}
