public override void Update(GUIControlContext Context, double Time)
{
MouseState ms = Context.MouseState;
if (ms != null)
{
// Zoom and stuff
double scroll = ms.Scroll;
if (scroll != 0.0)
{
double zoom = Math.Pow(2.0, -scroll / 40.0);
Rectangle win = this._Window;
Point mousepos = new Rectangle(this.Size).ToRelative(ms.Position);
mousepos.Y = 1.0 - mousepos.Y;
Point nwinsize = win.Size * zoom;
Point nwinpos = win.Location + mousepos.Scale(win.Size) - mousepos.Scale(nwinsize);
this._Window = new Rectangle(nwinpos, nwinsize).Intersection(this.Domain);
}
}
}
