mirror of
https://github.com/python/cpython.git
synced 2025-10-31 13:41:24 +00:00
54 lines
1 KiB
Python
54 lines
1 KiB
Python
|
# Replacements for getevent() and pollevent(),
|
||
|
|
# and new functions ungetevent() and sync().
|
||
|
|
|
||
|
|
|
||
|
|
# Every library module should ideally use this instead of
|
||
|
|
# stdwin.{get,poll}event(), so applications can use the services
|
||
|
|
# of ungetevent() and sync().
|
||
|
|
|
||
|
|
|
||
|
|
import stdwin
|
||
|
|
|
||
|
|
|
||
|
|
# Events read ahead are stored in this queue.
|
||
|
|
#
|
||
|
|
queue = []
|
||
|
|
|
||
|
|
|
||
|
|
# Replacement for getevent().
|
||
|
|
#
|
||
|
|
def getevent():
|
||
|
|
if queue:
|
||
|
|
event = queue[0]
|
||
|
|
del queue[0]
|
||
|
|
return event
|
||
|
|
else:
|
||
|
|
return stdwin.getevent()
|
||
|
|
|
||
|
|
|
||
|
|
# Replacement for pollevent().
|
||
|
|
#
|
||
|
|
def pollevent():
|
||
|
|
if queue:
|
||
|
|
return getevent()
|
||
|
|
else:
|
||
|
|
return stdwin.pollevent()
|
||
|
|
|
||
|
|
|
||
|
|
# Push an event back in the queue.
|
||
|
|
#
|
||
|
|
def ungetevent(event):
|
||
|
|
queue.insert(0, event)
|
||
|
|
|
||
|
|
|
||
|
|
# Synchronize the display. It turns out that this is the way to
|
||
|
|
# force STDWIN to call XSync(), which some (esoteric) applications need.
|
||
|
|
# (This is stronger than just flushing -- it actually waits for a
|
||
|
|
# positive response from the X server on the last command issued.)
|
||
|
|
#
|
||
|
|
def sync():
|
||
|
|
while 1:
|
||
|
|
event = stdwin.pollevent()
|
||
|
|
if not event: break
|
||
|
|
queue.append(event)
|