initial use of eventManager using heartbeat

src/fenrir/core/eventManager.py

@@ -4,7 +4,7 @@
 # Fenrir TTY screen reader
 # By Chrys, Storm Dragon, and contributers.
 
-#from core import debug
+from core import debug
 from queue import Empty
 import time 
 from enum import Enum
@@ -21,6 +21,7 @@ class fenrirEventType(Enum):
     PlugInputDevice = 5
     BrailleFlush = 6
     ScreenChanged = 7
+    HeartBeat = 8 # for time based scheduling
     def __int__(self):
         return self.value
     def __str__(self):
@@ -34,10 +35,14 @@ class eventManager():
         self._eventQueue = Queue() # multiprocessing.Queue()
         self.cleanEventQueue()
     def initialize(self, environment):
-        self.env = environment
+        self.env = environment    
+        self.addSimpleEventThread(fenrirEventType.HeartBeat, self.timerProcess)
     def shutdown(self):
         self.terminateAllProcesses()
         self.cleanEventQueue()
+    def timerProcess(self):
+        time.sleep(0.005)
+        return time.time()
     def terminateAllProcesses(self):
         for proc in self._eventProcesses:
             try:
@@ -68,6 +73,9 @@ class eventManager():
             pass            
         elif event['Type'] == fenrirEventType.ScreenChanged:
             pass
+        elif event['Type'] == fenrirEventType.HeartBeat:
+            self.env['runtime']['fenrirManager'].handleProcess()
+            print('HeartBeat at ' + str(event['Type']) + ' ' +str(event['Data'] ))
     def startMainEventLoop(self):
         self._mainLoopRunning.value = True
         while(self._mainLoopRunning.value):
@@ -83,7 +91,7 @@ class eventManager():
         t.start()
     def addSimpleEventThread(self, event, function):
         self._mainLoopRunning.value =  True
-        t = Process(target=self.SimpleEventWorkerThread, args=(event, function))
+        t = Process(target=self.simpleEventWorkerThread, args=(event, function))
         self._eventProcesses.append(t)
         t.start()
     def cleanEventQueue(self):

src/fenrir/core/fenrirManager.py

@@ -22,7 +22,7 @@ class fenrirManager():
         if not cliArgs:
             return        
         try:
-            self.environment = settingsManager.settingsManager().initFenrirConfig(cliArgs)
+            self.environment = settingsManager.settingsManager().initFenrirConfig(cliArgs, self)
             if not self.environment:
                 raise RuntimeError('Cannot Initialize. Maybe the configfile is not available or not parseable')
         except RuntimeError:
@@ -46,11 +46,8 @@ class fenrirManager():
     def proceed(self):
         if not self.initialized:
             return
-        while(self.environment['general']['running']):
-            try:
-                self.handleProcess()
-            except Exception as e:
-                self.environment['runtime']['debug'].writeDebugOut(str(e),debug.debugLevel.ERROR) 
+        self.environment['runtime']['eventManager'].startMainEventLoop()
+
         self.shutdown()
 
     def handleProcess(self):
@@ -118,7 +115,10 @@ class fenrirManager():
         self.shutdownRequest()
 
     def shutdown(self):
+        self.environment['eventManager'].stopMainEventLoop()        
         self.environment['runtime']['outputManager'].presentText(_("Quit Fenrir"), soundIcon='ScreenReaderOff', interrupt=True)       
+        self.environment['eventManager'].cleanEventQueue()
+        self.environment['eventManager'].stopMainEventLoop(True)
         for currManager in self.environment['general']['managerList']:
             if self.environment['runtime'][currManager]:
                 self.environment['runtime'][currManager].shutdown()                      

src/fenrir/core/settingsManager.py

@@ -242,7 +242,7 @@ class settingsManager():
                 optionArgDict[section] = {}
             optionArgDict[section][option] = str(value)
         return optionArgDict
-    def initFenrirConfig(self, cliArgs, environment = environment.environment):
+    def initFenrirConfig(self, cliArgs, fenrirManager = None, environment = environment.environment):
         settingsRoot = '/etc/fenrir/'
         settingsFile = cliArgs.setting
         soundRoot = '/usr/share/sounds/fenrir/'
@@ -304,6 +304,8 @@ class settingsManager():
         else:
             environment['runtime']['settingsManager'].loadDicts(self.getSetting('general','punctuationProfile'))
         
+        if fenrirManager:
+            environment['runtime']['fenrirManager'] = fenrirManager
         environment['runtime']['eventManager'] = eventManager.eventManager()
         environment['runtime']['eventManager'].initialize(environment)
         environment['runtime']['inputManager'] = inputManager.inputManager()