C:/work/RevealedSystems/EyeSpy-RS/eyespy/src/objects/gui/threads/redrawThread.py

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## @package objects.gui.threads
#
# The threads package contains various thread derived classes which handle periodic,
# non-user driven events, like redrawing or tracking mouse activity (for map tooltips)
# 
#     
#
# Copyright (C) 2008-2009  Mark Hanegraaff
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import time
from objects.logic.common.logger import logger

from objects.logic.common.threads.appThreadBase import appThreadBase



## The redrawThread class will periodically refresh the screen        
class redrawThread(appThreadBase): 
    
    ## Set the refresh interval 
    # @param refreshInterval String representing a refresh interval (Low = 60sec, Med = 10sec, High = 3sec)
    def setRefreshInterval(self, refreshInterval):
        if refreshInterval == "Low":
            self.refreshInterval = 60
        elif refreshInterval == "Med":
            self.refreshInterval = 10
        else:
            self.refreshInterval = 3

    ## performs redraw cycles in a loop. 
    # This method will end when the parent.killRedrawThread flag is set 
    def run ( self ):
        if not hasattr(self,"refreshInterval"):
            logger.log(__name__ + ": No refreshInterval was specified.")
            self.refreshInterval = 10
            
            
        try:
            while(self.killSwitch == False):
                self.threadEvent.clear()
 
                # don't waste cycled redrwaing if the app is minimized
                if self.parent.isWindowMinimined == False:                                   
                    self.parent.redrawCycle(True)                                                                                  
                
                #sleep for x secs, but wake up periodically to check to see if we're done
                for i in range(1, self.refreshInterval):
                    time.sleep(1)
                    if self.killSwitch == True:
                        logger.log(__name__ + ": Setting Redraw Event")
                        self.threadEvent.set() 
                        break
                                        
        finally:
            self.threadEvent.set()
            self.threadEvent.clear()
            
        
        logger.log(__name__ + ": Redraw Thread Done")

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