private void StartUpdate()
{
DateTime lastframe = DateTime.Now;
Graphics draw = null;
Logger.LogMessage("Starting update loop");
double fixedwait = (1000 / FPS); // number of msec to wait assuming zero time to draw frame
while (this.run)
{
TimeSpan elapsed = DateTime.Now.Subtract(lastframe);
double wait = fixedwait - elapsed.TotalMilliseconds;
if (wait > 0)
{
System.Threading.Thread.Sleep((int)fixedwait);
}
if (Glass == null)
{
System.Threading.Thread.Sleep(1000);
}
if (Glass != null)
{
if (Glass.Follow != null && Glass.Follow.HasExited)
{
Logger.LogMessage(String.Format("{0} has exited. quitting.", Glass.Follow.ProcessName));
System.Environment.Exit(0);
}
if (draw == null)
{
draw = Glass.CreateGraphics();
draw.TextRenderingHint = System.Drawing.Text.TextRenderingHint.SystemDefault;
}
if (Graphics == null)
{
Thread.Sleep(500);
continue;
}
IntPtr activeWindow = GetForegroundWindow();
bool foreground = activeWindow == Glass.Follow.MainWindowHandle;
// if there is nothing to draw, do a big sleep
if (Graphics.Values.Count == 0 || !foreground)
{
Clear(draw);
Thread.Sleep(1000);
}
if (foreground)
{
lock (Graphics)
{
Draw(draw);
}
Glass.FollowWindow();
}
lastframe = DateTime.Now;
}
}
}