On 01/27/2013 05:59 PM, leonix.po...@gmail.com wrote:
I tried to write a simple battery monitor for laptops which shows normally just
the battery percentage, and when is clicked some more info.
If I click just one time it works, but if I click a second time, the additional
info Label seems to be empty (but it holds the dimension of the StringVar
content, even if it isn't displayed)
Where am I wrong?
See inline comment.
---------------------------------------------------
#!/usr/bin/python3.2
from re import findall, search
from threading import Thread
from time import sleep
from subprocess import Popen, call, PIPE, STDOUT
from tkinter import *
class battery_monitor:
def __init__(self):
root=Tk()
# root.geometry("-0+0")
root.overrideredirect(True)
root.wm_attributes("-topmost", 1)
self.battery_string=StringVar()
self.battery_percent=StringVar()
self.battery_label=Label(root, extvariable=self.battery_string,
font=("fixed", 9))
I don't know tkinter very well, and I don't have 3.2, but the keyword
seems to be wrong. Don't you want textvariable= ??
self.battery_icon=Label(root, textvariable=self.battery_percent,
font=("fixed", 9), width=3)
self.battery_icon.grid()
t=Thread(target=self.update_battery_level_loop)
t.start()
root.bind("<Button-1>", self.display_details)
self.root=root
root.mainloop()
# displays a message about details of battery status
# i.e. "on-line" or "charging, 20 min left" and so on
def display_details(self, event):
self.battery_icon.grid_remove()
self.battery_label.grid()
self.root.update_idletasks()
sleep(1)
Never use sleep() inside a gui's main thread. There are other ways to
delay the UI without locking it up.
self.battery_label.grid_remove()
self.battery_icon.grid()
self.root.update_idletasks()
# dummy function used just to test the GUI
def read_battery_level(self):
self.level=100
return "battery is full"
# threaded function, should constantly update the battery level
def update_battery_level_loop(self):
self.read_battery_level()
while True:
self.battery_percent.set(self.level)
self.battery_string.set(self.read_battery_level())
sleep(5)
This sleep() is okay.
##############################################
#
# main
battery_monitor()
--
DaveA
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