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  #1  
Old 04-07-2011, 05:12 PM
Zhi Zhi is offline
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Join Date: Mar 2011
Posts: 49
Mouse event: how to detect no mouse move event, how to set mouse position?

Hi,

I am writing a program, which detects the mouse movement event and does certain stuff. However, when the mouse stops moving, I need to reset a variable. Is there an event that I can use to do this?

If there is no way to detect the non-movement event, a way around is to check the mouse position change periodically. However, when the mouse moves to the edge of the window or screen, its position value will be fixed. Is there any way to reset the mouse position? I see the viz.mouse.getposition(). Is there something like viz.mouse.setposition() that I can use?

Thanks,
Zhi
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  #2  
Old 04-11-2011, 06:41 PM
farshizzo farshizzo is offline
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Join Date: Mar 2003
Posts: 2,849
You can use a delayed timer to detect when the mouse stops moving after a certain amount of time. The following script shows how to do this:
Code:
import viz
viz.go()

MOUSE_STILL_EVENT = viz.getEventID('MouseStillEvent')

class MouseStillHandler(viz.EventClass):
	def __init__(self,delay=0.25):
		viz.EventClass.__init__(self)
		self.still_delay = delay

		self.callback(viz.TIMER_EVENT,self._onTimer)
		self.callback(viz.MOUSE_MOVE_EVENT,self._onMouseMove)

	def _onTimer(self,num):
		viz.sendEvent(MOUSE_STILL_EVENT,viz.Event(delay=self.still_delay))
		self.killtimer(0)

	def _onMouseMove(self,e):
		self.killtimer(0)
		self.starttimer(0,self.still_delay)


handler = MouseStillHandler()

def onMouseStill(e):
	print 'Mouse still'

viz.callback(MOUSE_STILL_EVENT,onMouseStill)
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  #3  
Old 04-11-2011, 07:16 PM
Zhi Zhi is offline
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Join Date: Mar 2011
Posts: 49
Thank you farshizzo, the script works well, though I do not really understand the codes.

Is that the MOUSE_STILL_EVENT is a variable you create, while the 'MouseStillEvent' is a constant defined somewhere else?

Sorry for the newbie question.
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  #4  
Old 04-11-2011, 07:25 PM
farshizzo farshizzo is offline
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Join Date: Mar 2003
Posts: 2,849
The viz.getEventID function is used to generate a custom event ID given a unique event name.
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