/usr/share/pyshared/childsplay/Timer.py is in childsplay 2.6.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (c) 2006 Stas Zykiewicz <stas.zytkiewicz@schoolsplay.org>
#
# Timer.py
# This program is free software; you can redistribute it and/or
# modify it under the terms of version 3 of the GNU General Public License
# as published by the Free Software Foundation. A copy of this license should
# be included in the file GPL-3.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Library General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
import time
import atexit
import logging
import threading
from SPSpriteUtils import MySprite, SPSprite
from utils import char2surf
module_logger = logging.getLogger("childsplay.Timer")
# In the Timer related classes the logger is disabled because it can flood the
# logfile. (especially with find_char_sound)
class Worker(threading.Thread):
"""Thread object internally used and called by Timer.
Don't use this directly, use Timer."""
def __init__(self, delay=None, func=None, fargs=None, loop=1, lock=None, cb_func=None, now=False):
self.logger = logging.getLogger("childsplay.Timer.Worker")
threading.Thread.__init__(self)
self.__delay = delay
self.__func = func
self.__fargs = fargs
self.__loop = loop
self.__do = 1
self.__die = False
self.__lock = lock
self.__cb_func = cb_func
self.__now = now
atexit.register(self._stop)
def __sleep(self, secs):
"""Sleep fuction that checks every tenth of a second to see if we should die"""
while secs > 0:
if not self.__do:
break
if self.__lock and self.__lock.locked():
#print "locked continue to sleep"
time.sleep(0.1)
continue
time.sleep(0.1)
secs -= 0.1
def run(self, now=False):
"""This overrides the threading.Thread.run method."""
#self.logger.info("Timer started")
if self.__now:
apply(self.__func, self.__fargs)
while self.__do:
if self.__die:
break
# if self.__lock and self.__lock.locked():
# print "locked and sleeping 100 msec"
# time.sleep(0.1)
self.__sleep(self.__delay)
# if self.__lock and self.__lock.locked():
# print "locked and again sleeping 100 msec"
# time.sleep(0.1)
try:
if not self.__do:
# this is done because when we call _stop when we in time.sleep
# the __func will set it back and the thread will never die.
break
self.__do = apply(self.__func, self.__fargs)
except Exception:
self.logger.exception("Timer stopped due to an exception in %s" % self.__func)
self.__do = 0
self.__loop -= 1
if not self.__loop: self.__do = 0
#self.logger.info("Timer thread stopped")
if self.__cb_func:
apply(self.__cb_func)
def _stop(self):
"""Used to stop the thread.
DON'T call this directly, use Timer.stop()."""
self.__do = 0
self.__die = True
class Timer:
def __init__(self, delay=1, func=None, fargs=(), loop=-1, lock=None, cb_func=None, startnow=False):
"""Timer, a timer object which runs in a seperate thread and calls the
function 'func' with the arguments 'fargs' after 'delay' seconds for
'loop' times.
'fargs' defaults to (), and 'loop' defaults to -1 which means
loop forever.
lock is a threading.lock object
cb_func is a function that is called when the timer stops.
The timer checks the return value of the called function and will stop
when the return value is false.
So you should make sure you return true when you want to continue and false
on error or when it should stop.
After construction you must call the start method to actual start
the timer.
The timer register a function in the atexit module to cleanup any threads
still running when the main application exits.
Be aware that if your application doesn't exit in a 'normal' way the
atexit function might not work. (not normal ways are exceptions that are
not cached by your app and terminate the program.)
"""
self.logger = logging.getLogger("childsplay.Timer.Timer")
#self.logger.debug("Timer created")
self.worker = Worker(delay, func, fargs, loop, lock, cb_func, now=startnow)
def start(self):
"""Start the timer object."""
#self.logger.info("Starting timer...")
self.worker.start()
def stop(self):
"""Stop the timer."""
#self.logger.info("Stopping timer...")
self.worker._stop()
class Clock(SPSprite):
""""""
def __init__(self, start='00:00', counting=1, end='10:00',
clocksize=32, clockpos=(0, 0), clockcolor=(0, 0, 0),
text='', textsize=18, textcolor=(0, 0, 0), textpos=1,
alarm=None, lock=None):
"""Timer clock. This clock depends on SpriteUtils object which is part
of the childsplay project (http://childsplay.sf.net).
@start is the start value of the clock in a string and must contains
a colon as a seperation between minutes and seconds.
@counting must be an integer 1 or -1 and is used to tell the clock to
count up (1) or down (-1). You should make sure the @start has a suitable
format to count up or down otherwise you could have negative values.
@end is the end time in a string, format is the same as @start.
@text is a string to be displayed together with the clock.
@textpos can be 1 to 4 to set the position of the text related to the
clock. 1 is on top, 2 right, 3 bottom, 4 left.
@alarm is called when the end time is reached, should be a callable function.
It defaults to None.
The rest will be obvious.
This class implements the Timer.Timer object so you should make sure
you don't leave threads running in case of a exception."""
self.logger = logging.getLogger("childsplay.Timer.Clock")
self.__csurf = char2surf(start, clocksize, clockcolor)
SPSprite.__init__(self, self.__csurf)
self.__tsprite = MySprite(char2surf(text, textsize, textcolor))
# convert textpos into a xy coordinate
if textpos == 1:
x = clockpos[0]
y = clockpos[1] - textsize
elif textpos == 3:
x = clockpos[0]
y = clockpos + clocksize
elif textpos == 2:
x = clockpos[0] + self.__csurf.get_width()
y = clockpos[1] + \
((self.__csurf.get_height() / 2) - (self.__tsprite.get_sprite_height() / 2))
elif textpos == 4:
x = clockpos[0] - self.__tsprite.get_sprite_width()
y = clockpos[1] + \
((self.__csurf.get_height() / 2) - (self.__tsprite.get_sprite_height() / 2))
self.__tpos = (x, y)
m, s = start.split(':')
self.__startminutes, self.__startseconds = int(m), int(s)
self.__start = start
m, s = end.split(':')
self.__endminutes, self.__endseconds = int(m), int(s)
self.__minutes = self.__startminutes
self.__seconds = self.__startseconds
self.__end = end
self.__count = counting
self.__csize = clocksize
self.__cpos = clockpos
self.__ccol = clockcolor
self.__text = text
self.__tsize = textsize
self.__tcol = textcolor
self.__alarm = alarm
self.__clock_stopped = 0
self.__clock = Timer(1, self.__update, loop=-1, lock=lock)
def start_clock(self):
self.display_sprite(pos=self.__cpos)
self.__tsprite.display_sprite(pos=self.__tpos)
self.__clock.start()
def stop_clock(self):
self.__clock.stop()
def get_display(self):
return (self.rect, self.image)
def get_time(self):
return "%02d:%02d" % (self.__minutes, self.__seconds)
def __update(self):
if self.__clock_stopped:
return
if self.__minutes == self.__endminutes and \
self.__seconds == self.__endseconds:
if self.__alarm:
try:
apply(self.__alarm)
except Exception:
self.logger.exception("Exception in %s" % self.__class__)
self.__clock.stop()
self.__clock_stopped = 1
return
if self.__count == 1:# forwards
if self.__seconds == 59:
self.__seconds = 0
self.__minutes += self.__count
else:
self.__seconds += self.__count
else:# backwards
if self.__seconds == 0:
self.__seconds = 59
self.__minutes += self.__count
else:
self.__seconds += self.__count
time = "%02d:%02d" % (self.__minutes, self.__seconds)
self.__tsprite.erase_sprite()
self.erase_sprite()
self.image = char2surf(time, self.__csize, self.__ccol)
self.display_sprite()
self.__tsprite.display_sprite()
return 1
if __name__ == '__main__':
i = 0
def test( *args):
global i
i += 1
print i, "message from test"
if args:
print "args from test", args
return 1
t = Timer(1, test, ('these are the args', ), loop=60)
print "Start timer (60 times)"
t.start()
while i < 60:
pass
print "wait 2 seconds"
time.sleep(2)
print "and do some stuff in main"
print "wait another 2 secs"
time.sleep(2)
print "and now stop the timer"
t.stop()
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