112 lines
3.6 KiB
Python
112 lines
3.6 KiB
Python
|
# encoding: utf-8
|
||
|
|
"""
|
||
|
|
Enable pyglet to be used interactively by setting PyOS_InputHook.
|
||
|
|
|
||
|
|
Authors
|
||
|
|
-------
|
||
|
|
|
||
|
|
* Nicolas P. Rougier
|
||
|
|
* Fernando Perez
|
||
|
|
"""
|
||
|
|
|
||
|
|
#-----------------------------------------------------------------------------
|
||
|
|
# Copyright (C) 2008-2011 The IPython Development Team
|
||
|
|
#
|
||
|
|
# Distributed under the terms of the BSD License. The full license is in
|
||
|
|
# the file COPYING, distributed as part of this software.
|
||
|
|
#-----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
#-----------------------------------------------------------------------------
|
||
|
|
# Imports
|
||
|
|
#-----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
import os
|
||
|
|
import sys
|
||
|
|
import time
|
||
|
|
from timeit import default_timer as clock
|
||
|
|
import pyglet
|
||
|
|
|
||
|
|
#-----------------------------------------------------------------------------
|
||
|
|
# Platform-dependent imports and functions
|
||
|
|
#-----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
if os.name == 'posix':
|
||
|
|
import select
|
||
|
|
|
||
|
|
def stdin_ready():
|
||
|
|
infds, outfds, erfds = select.select([sys.stdin],[],[],0)
|
||
|
|
if infds:
|
||
|
|
return True
|
||
|
|
else:
|
||
|
|
return False
|
||
|
|
|
||
|
|
elif sys.platform == 'win32':
|
||
|
|
import msvcrt
|
||
|
|
|
||
|
|
def stdin_ready():
|
||
|
|
return msvcrt.kbhit()
|
||
|
|
|
||
|
|
|
||
|
|
# On linux only, window.flip() has a bug that causes an AttributeError on
|
||
|
|
# window close. For details, see:
|
||
|
|
# http://groups.google.com/group/pyglet-users/browse_thread/thread/47c1aab9aa4a3d23/c22f9e819826799e?#c22f9e819826799e
|
||
|
|
|
||
|
|
if sys.platform.startswith('linux'):
|
||
|
|
def flip(window):
|
||
|
|
try:
|
||
|
|
window.flip()
|
||
|
|
except AttributeError:
|
||
|
|
pass
|
||
|
|
else:
|
||
|
|
def flip(window):
|
||
|
|
window.flip()
|
||
|
|
|
||
|
|
#-----------------------------------------------------------------------------
|
||
|
|
# Code
|
||
|
|
#-----------------------------------------------------------------------------
|
||
|
|
|
||
|
|
def inputhook_pyglet():
|
||
|
|
"""Run the pyglet event loop by processing pending events only.
|
||
|
|
|
||
|
|
This keeps processing pending events until stdin is ready. After
|
||
|
|
processing all pending events, a call to time.sleep is inserted. This is
|
||
|
|
needed, otherwise, CPU usage is at 100%. This sleep time should be tuned
|
||
|
|
though for best performance.
|
||
|
|
"""
|
||
|
|
# We need to protect against a user pressing Control-C when IPython is
|
||
|
|
# idle and this is running. We trap KeyboardInterrupt and pass.
|
||
|
|
try:
|
||
|
|
t = clock()
|
||
|
|
while not stdin_ready():
|
||
|
|
pyglet.clock.tick()
|
||
|
|
for window in pyglet.app.windows:
|
||
|
|
window.switch_to()
|
||
|
|
window.dispatch_events()
|
||
|
|
window.dispatch_event('on_draw')
|
||
|
|
flip(window)
|
||
|
|
|
||
|
|
# We need to sleep at this point to keep the idle CPU load
|
||
|
|
# low. However, if sleep to long, GUI response is poor. As
|
||
|
|
# a compromise, we watch how often GUI events are being processed
|
||
|
|
# and switch between a short and long sleep time. Here are some
|
||
|
|
# stats useful in helping to tune this.
|
||
|
|
# time CPU load
|
||
|
|
# 0.001 13%
|
||
|
|
# 0.005 3%
|
||
|
|
# 0.01 1.5%
|
||
|
|
# 0.05 0.5%
|
||
|
|
used_time = clock() - t
|
||
|
|
if used_time > 10.0:
|
||
|
|
# print 'Sleep for 1 s' # dbg
|
||
|
|
time.sleep(1.0)
|
||
|
|
elif used_time > 0.1:
|
||
|
|
# Few GUI events coming in, so we can sleep longer
|
||
|
|
# print 'Sleep for 0.05 s' # dbg
|
||
|
|
time.sleep(0.05)
|
||
|
|
else:
|
||
|
|
# Many GUI events coming in, so sleep only very little
|
||
|
|
time.sleep(0.001)
|
||
|
|
except KeyboardInterrupt:
|
||
|
|
pass
|
||
|
|
return 0
|