How refresh a DrawingArea in PyGTK ?
- by Lialon
I have an interface created with Glade. It contains a DrawingArea and buttons.
I tried to create a Thread to refresh every X time my Canva. After a few seconds, I get error messages like:
"X Window Server 0.0", "Fatal Error IO 11"
Here is my code :
import pygtk
pygtk.require("2.0")
import gtk
import Canvas
import threading as T
import time
import Map
gtk.gdk.threads_init()
class Interface(object):
class ThreadCanvas(T.Thread):
"""Thread to display the map"""
def __init__(self, interface):
T.Thread.__init__(self)
self.interface = interface
self.started = True
self.start()
def run(self):
while self.started:
time.sleep(2)
self.interface.on_canvas_expose_event()
def stop(self):
self.started = False
def __init__(self):
self.interface = gtk.Builder()
self.interface.add_from_file("interface.glade")
#Map
self.map = Map.Map(2,2)
#Canva
self.canvas = Canvas.MyCanvas(self.interface.get_object("canvas"),self.game)
self.interface.connect_signals(self)
#Thread Canvas
self.render = self.ThreadCanvas(self)
def on_btnChange_clicked(self, widget):
#Change map
self.map.change()
def on_interface_destroy(self, widget):
self.render.stop()
self.render.join()
self.render._Thread__stop()
gtk.main_quit()
def on_canvas_expose_event(self):
st = time.time()
self.canvas.update(self.map)
et = time.time()
print "Canvas refresh in : %f times" %(et-st)
def main(self):
gtk.main()
How can i fix these errors ?
