def run_mainloop(self, delay, wait=True, exact=False):
'''
Run mainloop for a maximum of <delay> seconds.
If wait is True (default), sleep until <delay> seconds have passed.
'''
start = exact_time()
dt = 0
# TODO possibly this implementation of event handling using threads
# can be done in a better way using ipython-0.11 inputhook support?
gtk.gdk.threads_enter()
while gtk.events_pending() and (not exact or (dt + 0.001) < delay):
gtk.main_iteration_do(False)
dt = exact_time() - start
gtk.gdk.threads_leave()
if delay > dt and wait:
time.sleep(delay - dt)
def run_mainloop(self, delay, wait=True, exact=False):
'''
Run mainloop for a maximum of <delay> seconds.
If wait is True (default), sleep until <delay> seconds have passed.
'''
start = exact_time()
dt = 0
# TODO possibly this implementation of event handling using threads
# can be done in a better way using ipython-0.11 inputhook support?
gtk.gdk.threads_enter()
while gtk.events_pending() and (not exact or (dt + 0.001) < delay):
gtk.main_iteration_do(False)
dt = exact_time() - start
gtk.gdk.threads_leave()
if delay > dt and wait:
time.sleep(delay - dt)
def measurement_idle(self, delay=0.0, exact=False, emit_interval=1):
'''
Indicate that the measurement is idle and handle events.
This function will check whether an abort has been requested and
handle queued events for a time up to 'delay' (in seconds).
It starts by emitting the 'measurement-idle' signal to allow callbacks
to be executed by the time this function handles the event queue.
After that it handles events and sleeps for periods of 10msec. Every
<emit_interval> seconds it will emit another measurement-idle signal.
If exact=True, timing should be a bit more precise, but in this case
a delay <= 1msec will result in NO gui interaction.
'''
start = exact_time()
self.emit('measurement-idle')
lastemit = exact_time()
while self._pause:
self.check_abort()
self.run_mainloop(0.01)
while True:
self.check_abort()
curtime = exact_time()
if curtime - lastemit > emit_interval:
self.emit('measurement-idle')
lastemit = curtime
dt = exact_time() - start
self.run_mainloop(delay - dt, wait=False, exact=exact)
dt = exact_time() - start
if dt + 0.01 < delay:
time.sleep(0.01)
else:
time.sleep(max(0, delay - dt))
return
def measurement_idle(self, delay=0.0, exact=False, emit_interval=1):
'''
Indicate that the measurement is idle and handle events.
This function will check whether an abort has been requested and
handle queued events for a time up to 'delay' (in seconds).
It starts by emitting the 'measurement-idle' signal to allow callbacks
to be executed by the time this function handles the event queue.
After that it handles events and sleeps for periods of 10msec. Every
<emit_interval> seconds it will emit another measurement-idle signal.
If exact=True, timing should be a bit more precise, but in this case
a delay <= 1msec will result in NO gui interaction.
'''
start = exact_time()
self.emit('measurement-idle')
lastemit = exact_time()
while self._pause:
self.check_abort()
self.run_mainloop(0.01)
while True:
self.check_abort()
curtime = exact_time()
if curtime - lastemit > emit_interval:
self.emit('measurement-idle')
lastemit = curtime
dt = exact_time() - start
self.run_mainloop(delay-dt, wait=False, exact=exact)
dt = exact_time() - start
if dt + 0.01 < delay:
time.sleep(0.01)
else:
time.sleep(max(0, delay - dt))
return
def _measurement_idle_cb(self, widget):
now = exact_time()
if (now - self._idle_lasttime) > self._idle_mintime:
self._idle_lasttime = now
self._function()
def _measurement_idle_cb(self, widget):
now = exact_time()
if (now - self._idle_lasttime) > self._idle_mintime:
self._idle_lasttime = now
self._function()
