Remove timing thread that crashes and added a wx.timer for outside st…

…age movement sensing

cockpit/gui/macroStage/macroStageXY.py

@@ -212,6 +212,27 @@ def __init__(self, *args, **kwargs):
  self._OnObjectiveChanged,
  )
 
+ #many stages have an external control that cockpit knows nothing about
+ #eg an xy(z) joystick. So setup a wx timer to poll the position
+ #and update if it changes.
+ self._positionCache = [0.0 for x in range(len
+ (cockpit.interfaces.stageMover.getPosition()))]
+ self._timer = wx.Timer(self)
+ #poll every 1 s (1000 ms)
+ self._timer.Start(1000)
+ self.Bind(wx.EVT_TIMER, self.onTimer)
+
+ #code that the wx timer calls to check postion on a regular basisis.
+ def onTimer(self, evt):
+ position=cockpit.interfaces.stageMover.getPosition()
+ for i,pos in enumerate(position):
+ if pos != self._positionCache[i]:
+ events.publish(events.STAGE_POSITION, i, pos)
+ self._positionCache[i] = pos
+
+ def OnDestroy(self, evt):
+ self._timer.Stop()
+
  ## Safety limits have changed, which means we need to force a refresh.
  # \todo Redrawing everything just to tackle the safety limits is a bit
  # excessive.