Das deutsche Python-Forum

Code: Alles auswählen

~ PAGER=cat python -c 'help("gobject.timeout_add")'
Help on built-in function timeout_add in gobject:

gobject.timeout_add = timeout_add(...)
    timeout_add(interval, callable, user_data=None,
                priority=None) -> source id
      callable receives (user_data)
    Sets a callable be called repeatedly until it returns False.

Code: Alles auswählen

import gtk
import gobject

class PulseBar(gtk.ProgressBar):
    def __init__(self, interval=120):
        gtk.ProgressBar.__init__(self)
    
        self.interval = interval
        self._pulsing = False
    
    def switch_pulsing(self):
        if self._pulsing:
            self.stop_pulsing()
        else:
            self.start_pulsing()
    
    def start_pulsing(self):
        self._pulsing  = True
        gobject.timeout_add(self.interval, self.do_pulse)
    
    def do_pulse(self):
        self.pulse()
        return self._pulsing
    
    def stop_pulsing(self):
        self._pulsing = False

Code: Alles auswählen

window = gtk.Window()
vbox = gtk.VBox()
window.add(vbox)
pulsebar = PulseBar()
vbox.pack_start(pulsebar)
btn = gtk.Button("Start/Stop")
pulsebar.set_text("hallo")
pulsebar.set_pulse_step(0.2)
btn.connect("clicked", lambda widget: pulsebar.switch_pulsing())
vbox.pack_start(btn)
window.show_all()
gtk.main()