def _postVisibilityChange(self, visible):
""" Post a visibility changed event for the dock item.
This method collapses the post on a timer and will not emit
the event when the visibility temporarily toggles bettwen
states.
Parameters
----------
visible : bool
True if the item was show, False if the item was hidden.
"""
area = self.rootDockArea()
if area is not None and area.dockEventsEnabled():
vis_changed = self._vis_changed
if vis_changed is None:
timer = QTimer()
timer.setSingleShot(True)
timer.timeout.connect(self._onVisibilityTimer)
self._vis_changed = (timer, visible)
timer.start()
else:
timer, old_visible = vis_changed
if old_visible != visible:
self._vis_changed = None
timer.stop()
def start_timer(self, name, duration, callback):
log.debug('Starting %f sec. timer %s', duration, name)
timer = QTimer()
timer.timeout.connect(callback)
timer.setSingleShot(True)
timer.start(duration * 1e3)
self._timers[name] = timer
def _default__band_timer(self):
""" Create the default timer for the band state changes.
"""
timer = QTimer()
timer.setSingleShot(True)
timer.timeout.connect(self._on_band_timer)
return timer
def start_timer(self, name, duration, callback):
try:
timer = QTimer()
timer.timeout.connect(callback)
timer.setSingleShot(True)
timer.start(int(duration * 1e3))
self._timers[name] = timer
except Exception as e:
log.error(
f'Attempt to start timer {name} with duration {duration} sec failed'
)
raise
def __init__(self):
self._reads = {}
self._writes = {}
self._notifiers = {}
self._timer = QTimer()
self._timer.setSingleShot(True)
self._timer.timeout.connect(self.iterate)
if QCoreApplication.instance() is None:
# Application Object has not been started yet
self.qApp = QCoreApplication([])
self._ownApp = True
else:
self.qApp = QCoreApplication.instance()
self._ownApp = False
self._blockApp = None
posixbase.PosixReactorBase.__init__(self)
def alert(self, level, on=250, off=250, repeat=4, persist=False):
""" Set the alert level on the dock item.
This will override any currently applied alert level.
Parameters
----------
level : unicode
The alert level token to apply to the dock item.
on : int
The duration of the 'on' cycle, in ms. A value of -1 means
always on.
off : int
The duration of the 'off' cycle, in ms. If 'on' is -1, this
value is ignored.
repeat : int
The number of times to repeat the on-off cycle. If 'on' is
-1, this value is ignored.
persist : bool
Whether to leave the alert in the 'on' state when the cycles
finish. If 'on' is -1, this value is ignored.
"""
if self._alert_data is not None:
self.clearAlert()
app = QApplication.instance()
app.focusChanged.connect(self._onAppFocusChanged)
timer = QTimer()
timer.setSingleShot(True)
timer.timeout.connect(self._onAlertTimer)
on, off, repeat = max(-1, on), max(0, off), max(1, repeat)
self._alert_data = _AlertData(timer, level, on, off, repeat, persist)
if on < 0:
self.alerted.emit(level)
else:
self._onAlertTimer()
