This is my first successful attempt at threading in pyGTK.
Suggestions please.
Python, 71 lines
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Copy to clipboard1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | #!/usr/bin/python
import threading
import gtk
import random
import time
gtk.gdk.threads_init()
NUM_THREADS = 10
class PyApp(gtk.Window):
def __init__(self, threads=None):
super(PyApp, self).__init__()
self.connect("destroy", self.quit)
self.set_title("pyGTK Threads Example")
vbox = gtk.VBox(False, 4)
self.threads = []
for i in range(NUM_THREADS + 1):
pb = gtk.ProgressBar()
vbox.pack_start(pb, False, False, 0)
self.threads.append(ProgressThread(pb, random.uniform(0.01, 0.10)))
self.add(vbox)
self.show_all()
def quit(self, obj):
for t in self.threads:
t.stop()
gtk.main_quit()
class ProgressThread(threading.Thread):
def __init__(self, progressbar, step_value):
threading.Thread.__init__ (self)
self.pb = progressbar
self.step = step_value
self.stopthread = threading.Event()
def run(self):
while not self.stopthread.isSet():
cur_frac = self.pb.get_fraction()
new_frac = cur_frac + self.step
if new_frac > 1.0:
new_frac = 1.0
gtk.gdk.threads_enter()
self.pb.set_fraction(new_frac)
gtk.gdk.threads_leave()
if self.pb.get_fraction() == 1.0:
break
time.sleep(0.1)
def stop(self):
self.stopthread.set()
if __name__ == "__main__":
pyapp = PyApp()
for t in pyapp.threads:
t.start()
gtk.gdk.threads_enter()
gtk.main()
gtk.gdk.threads_leave()
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Originally I created the threads array outside the PyApp class, down in the "__main__" part. I moved it inside the class and forgot to take out the threads=None in the PyApp class constructor.
I think I should have made a start method for the threads inside the PyApp class also.
I got to a winxp machine and it quit working until I wrapped the gtk.main() call in an enter/leave. I found the solution in: http://www.daa.com.au/pipermail/pygtk/2003-August/005626.html