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"""Runs a remote_ctl server inside QtiPlot.
Chris Nicolai 2010
Usage:
>>> global remote_ctl_server
>>> remote_ctl_server = ServerClass()
>>> remote_ctl_server.start()
>>> ...
>>> remote_ctl_server.stop()
"""
import os
from PyQt4 import QtCore
import qti
import remote_ctl
import Queue
import sys
import tempfile
TIMER_MS = 80
MAX_PER_TIMER = 10
sockid_path = os.path.join(tempfile.gettempdir(), 'qtiplot.sockid')
class ServerClass(object):
"""Manages the L{remote_ctl.RemoteServer} and a Qt timer to service it."""
def __init__(self):
self.remote = None
def start(self, timer_ms=TIMER_MS, max_per_timer=MAX_PER_TIMER):
"""Starts the server and timer.start
@param timer_ms: checks for requests every this many milliseconds
@param max_per_timer: processes up to this many, if avail, each time
"""
self.max_per_timer = max_per_timer
self.remote = remote_ctl.RemoteServer(sockid_path=sockid_path)
self.timer = QtCore.QTimer()
QtCore.QObject.connect(self.timer, QtCore.SIGNAL("timeout()"), self.do_work)
self.timer.start(timer_ms)
def stop(self):
self.timer.stop()
self.remote.stop()
self.timer = self.remote = None
def do_work(self):
for i in xrange(self.max_per_timer):
if not self.remote.process_one():
break
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