95 lines
2.6 KiB
Python
95 lines
2.6 KiB
Python
#!/bin/python
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# -*- coding: utf-8 -*-
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# Fenrir TTY screen reader
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# By Chrys, Storm Dragon, and contributers.
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#from core import debug
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from threading import Thread
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from queue import Queue, Empty
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import time
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from enum import Enum
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from _thread import allocate_lock
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#from multiprocessing import Process, Queue
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class fenrirEventType(Enum):
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Ignore = 0
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StopMainLoop = 1
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ScreenUpdate = 2
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KeyboardInput = 3
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BrailleInput = 4
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PlugInputDevice = 5
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BrailleFlush = 6
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ScreenChanged = 7
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def __int__(self):
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return self.value
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def __str__(self):
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return self.name
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class eventQueue(Queue):
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def clear(self):
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try:
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while True:
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self.get_nowait()
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except Empty:
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pass
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class eventManager():
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def __init__(self):
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self._mainLoopRunning = True
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self._eventThreads = []
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self._eventQueue = eventQueue()
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self.lock = allocate_lock()
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def initialize(self, environment):
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self.env = environment
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def shutdown(self):
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self._eventQueue.clear()
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def proceedEventLoop(self):
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event = self._eventQueue.get()
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print(event)
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return(event != fenrirEventType.StopMainLoop)
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def startMainEventLoop(self):
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while(True):
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self.proceedEventLoop()
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self.lock.acquire(True)
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if not self._mainLoopRunning:
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break
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self.lock.release()
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def stopMainEventLoop(self):
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self.lock.acquire(True)
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self._mainLoopRunning = False
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self.lock.release()
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self._eventQueue.put({"EVENT":fenrirEventType.StopMainLoop,"DATA":None})
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def addEventThread(self, event, function):
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t = Thread(target=self.eventWorkerThread, args=(event, function))
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self._eventThreads.append(t)
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t.start()
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def eventWorkerThread(self, event, function):
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# for i in range(20):
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while True:
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Data = None
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try:
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Data = function()
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except Exception as e:
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print(e)
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self._eventQueue.put({"EVENT":event,"DATA":Data})
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self.lock.acquire(True)
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if not self._mainLoopRunning:
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break
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self.lock.release()
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def p():
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time.sleep(0.5)
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#return("p")
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e = eventManager()
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e.addEventThread(fenrirEventType.ScreenUpdate,p)
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e.addEventThread(fenrirEventType.BrailleInput,p)
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e.addEventThread(fenrirEventType.PlugInputDevice,p)
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e.addEventThread(fenrirEventType.ScreenChanged,p)
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time.sleep(0.5)
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e.addEventThread(fenrirEventType.StopMainLoop,e.stopMainEventLoop)
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