Example #1
0
def main():
	"""NVDA's core main loop.
This initializes all modules such as audio, IAccessible, keyboard, mouse, and GUI. Then it initialises the wx application object and sets up the core pump, which checks the queues and executes functions when requested. Finally, it starts the wx main loop.
"""
	log.debug("Core starting")

	try:
		# Windows >= Vista
		ctypes.windll.user32.SetProcessDPIAware()
	except AttributeError:
		pass

	import config
	if not globalVars.appArgs.configPath:
		globalVars.appArgs.configPath=config.getUserDefaultConfigPath(useInstalledPathIfExists=globalVars.appArgs.launcher)
	#Initialize the config path (make sure it exists)
	config.initConfigPath()
	log.info("Config dir: %s"%os.path.abspath(globalVars.appArgs.configPath))
	log.debug("loading config")
	import config
	config.initialize()
	if not globalVars.appArgs.minimal and config.conf["general"]["playStartAndExitSounds"]:
		try:
			nvwave.playWaveFile("waves\\start.wav")
		except:
			pass
	logHandler.setLogLevelFromConfig()
	try:
		lang = config.conf["general"]["language"]
		import languageHandler
		log.debug("setting language to %s"%lang)
		languageHandler.setLanguage(lang)
	except:
		log.warning("Could not set language to %s"%lang)
	import versionInfo
	log.info("NVDA version %s" % versionInfo.version)
	log.info("Using Windows version %s" % winVersion.winVersionText)
	log.info("Using Python version %s"%sys.version)
	log.info("Using comtypes version %s"%comtypes.__version__)
	# Set a reasonable timeout for any socket connections NVDA makes.
	import socket
	socket.setdefaulttimeout(10)
	log.debug("Initializing add-ons system")
	addonHandler.initialize()
	if globalVars.appArgs.disableAddons:
		log.info("Add-ons are disabled. Restart NVDA to enable them.")
	import appModuleHandler
	log.debug("Initializing appModule Handler")
	appModuleHandler.initialize()
	import NVDAHelper
	log.debug("Initializing NVDAHelper")
	NVDAHelper.initialize()
	import speechDictHandler
	log.debug("Speech Dictionary processing")
	speechDictHandler.initialize()
	import speech
	log.debug("Initializing speech")
	speech.initialize()
	if not globalVars.appArgs.minimal and (time.time()-globalVars.startTime)>5:
		log.debugWarning("Slow starting core (%.2f sec)" % (time.time()-globalVars.startTime))
		# Translators: This is spoken when NVDA is starting.
		speech.speakMessage(_("Loading NVDA. Please wait..."))
	import wx
	log.info("Using wx version %s"%wx.version())
	class App(wx.App):
		def OnAssert(self,file,line,cond,msg):
			message="{file}, line {line}:\nassert {cond}: {msg}".format(file=file,line=line,cond=cond,msg=msg)
			log.debugWarning(message,codepath="WX Widgets",stack_info=True)
	app = App(redirect=False)
	# We do support QueryEndSession events, but we don't want to do anything for them.
	app.Bind(wx.EVT_QUERY_END_SESSION, lambda evt: None)
	def onEndSession(evt):
		# NVDA will be terminated as soon as this function returns, so save configuration if appropriate.
		config.saveOnExit()
		speech.cancelSpeech()
		if not globalVars.appArgs.minimal and config.conf["general"]["playStartAndExitSounds"]:
			try:
				nvwave.playWaveFile("waves\\exit.wav",async=False)
			except:
				pass
		log.info("Windows session ending")
	app.Bind(wx.EVT_END_SESSION, onEndSession)
	import braille
	log.debug("Initializing braille")
	braille.initialize()
	log.debug("Initializing braille input")
	import brailleInput
	brailleInput.initialize()
	import displayModel
	log.debug("Initializing displayModel")
	displayModel.initialize()
	log.debug("Initializing GUI")
	import gui
	gui.initialize()
	import audioDucking
	if audioDucking.isAudioDuckingSupported():
		# the GUI mainloop must be running for this to work so delay it
		wx.CallAfter(audioDucking.initialize)

	# #3763: In wxPython 3, the class name of frame windows changed from wxWindowClassNR to wxWindowNR.
	# NVDA uses the main frame to check for and quit another instance of NVDA.
	# To remain compatible with older versions of NVDA, create our own wxWindowClassNR.
	# We don't need to do anything else because wx handles WM_QUIT for all windows.
	import windowUtils
	class MessageWindow(windowUtils.CustomWindow):
		className = u"wxWindowClassNR"
	messageWindow = MessageWindow(unicode(versionInfo.name))

	# initialize wxpython localization support
	locale = wx.Locale()
	lang=languageHandler.getLanguage()
	wxLang=locale.FindLanguageInfo(lang)
	if not wxLang and '_' in lang:
		wxLang=locale.FindLanguageInfo(lang.split('_')[0])
	if hasattr(sys,'frozen'):
		locale.AddCatalogLookupPathPrefix(os.path.join(os.getcwdu(),"locale"))
	if wxLang:
		try:
			locale.Init(wxLang.Language)
		except:
			log.error("Failed to initialize wx locale",exc_info=True)
	else:
		log.debugWarning("wx does not support language %s" % lang)

	import api
	import winUser
	import NVDAObjects.window
	desktopObject=NVDAObjects.window.Window(windowHandle=winUser.getDesktopWindow())
	api.setDesktopObject(desktopObject)
	api.setFocusObject(desktopObject)
	api.setNavigatorObject(desktopObject)
	api.setMouseObject(desktopObject)
	import JABHandler
	log.debug("initializing Java Access Bridge support")
	try:
		JABHandler.initialize()
	except NotImplementedError:
		log.warning("Java Access Bridge not available")
	except:
		log.error("Error initializing Java Access Bridge support", exc_info=True)
	import winConsoleHandler
	log.debug("Initializing winConsole support")
	winConsoleHandler.initialize()
	import UIAHandler
	log.debug("Initializing UIA support")
	try:
		UIAHandler.initialize()
	except NotImplementedError:
		log.warning("UIA not available")
	except:
		log.error("Error initializing UIA support", exc_info=True)
	import IAccessibleHandler
	log.debug("Initializing IAccessible support")
	IAccessibleHandler.initialize()
	log.debug("Initializing input core")
	import inputCore
	inputCore.initialize()
	import keyboardHandler
	log.debug("Initializing keyboard handler")
	keyboardHandler.initialize()
	import mouseHandler
	log.debug("initializing mouse handler")
	mouseHandler.initialize()
	import touchHandler
	log.debug("Initializing touchHandler")
	try:
		touchHandler.initialize()
	except NotImplementedError:
		pass
	import globalPluginHandler
	log.debug("Initializing global plugin handler")
	globalPluginHandler.initialize()
	if globalVars.appArgs.install or globalVars.appArgs.installSilent:
		import wx
		import gui.installerGui
		wx.CallAfter(gui.installerGui.doSilentInstall,startAfterInstall=not globalVars.appArgs.installSilent)
	elif not globalVars.appArgs.minimal:
		try:
			# Translators: This is shown on a braille display (if one is connected) when NVDA starts.
			braille.handler.message(_("NVDA started"))
		except:
			log.error("", exc_info=True)
		if globalVars.appArgs.launcher:
			gui.LauncherDialog.run()
			# LauncherDialog will call doStartupDialogs() afterwards if required.
		else:
			wx.CallAfter(doStartupDialogs)
	import queueHandler
	# Queue the handling of initial focus,
	# as API handlers might need to be pumped to get the first focus event.
	queueHandler.queueFunction(queueHandler.eventQueue, _setInitialFocus)
	import watchdog
	import baseObject

	# Doing this here is a bit ugly, but we don't want these modules imported
	# at module level, including wx.
	log.debug("Initializing core pump")
	class CorePump(wx.Timer):
		"Checks the queues and executes functions."
		def Notify(self):
			global _isPumpPending
			_isPumpPending = False
			watchdog.alive()
			try:
				if touchHandler.handler:
					touchHandler.handler.pump()
				JABHandler.pumpAll()
				IAccessibleHandler.pumpAll()
				queueHandler.pumpAll()
				mouseHandler.pumpAll()
				braille.pumpAll()
			except:
				log.exception("errors in this core pump cycle")
			baseObject.AutoPropertyObject.invalidateCaches()
			watchdog.asleep()
			if _isPumpPending and not _pump.IsRunning():
				# #3803: A pump was requested, but the timer was ignored by a modal loop
				# because timers aren't re-entrant.
				# Therefore, schedule another pump.
				_pump.Start(PUMP_MAX_DELAY, True)
	global _pump
	_pump = CorePump()
	requestPump()

	log.debug("Initializing watchdog")
	watchdog.initialize()
	try:
		import updateCheck
	except RuntimeError:
		updateCheck=None
		log.debug("Update checking not supported")
	else:
		log.debug("initializing updateCheck")
		updateCheck.initialize()
	log.info("NVDA initialized")

	log.debug("entering wx application main loop")
	app.MainLoop()

	log.info("Exiting")
	if updateCheck:
		_terminate(updateCheck)

	_terminate(watchdog)
	_terminate(globalPluginHandler, name="global plugin handler")
	_terminate(gui)
	config.saveOnExit()

	try:
		if globalVars.focusObject and hasattr(globalVars.focusObject,"event_loseFocus"):
			log.debug("calling lose focus on object with focus")
			globalVars.focusObject.event_loseFocus()
	except:
		log.exception("Lose focus error")
	try:
		speech.cancelSpeech()
	except:
		pass

	import treeInterceptorHandler
	_terminate(treeInterceptorHandler)
	_terminate(IAccessibleHandler, name="IAccessible support")
	_terminate(UIAHandler, name="UIA support")
	_terminate(winConsoleHandler, name="winConsole support")
	_terminate(JABHandler, name="Java Access Bridge support")
	_terminate(appModuleHandler, name="app module handler")
	_terminate(NVDAHelper)
	_terminate(touchHandler)
	_terminate(keyboardHandler, name="keyboard handler")
	_terminate(mouseHandler)
	_terminate(inputCore)
	_terminate(brailleInput)
	_terminate(braille)
	_terminate(speech)
	_terminate(addonHandler)

	if not globalVars.appArgs.minimal and config.conf["general"]["playStartAndExitSounds"]:
		try:
			nvwave.playWaveFile("waves\\exit.wav",async=False)
		except:
			pass
	# #5189: Destroy the message window as late as possible
	# so new instances of NVDA can find this one even if it freezes during exit.
	messageWindow.destroy()
	log.debug("core done")
Example #2
0
def main():
	"""NVDA's core main loop.
This initializes all modules such as audio, IAccessible, keyboard, mouse, and GUI. Then it initialises the wx application object and sets up the core pump, which checks the queues and executes functions when requested. Finally, it starts the wx main loop.
"""
	log.debug("Core starting")

	ctypes.windll.user32.SetProcessDPIAware()

	import config
	if not globalVars.appArgs.configPath:
		globalVars.appArgs.configPath=config.getUserDefaultConfigPath(useInstalledPathIfExists=globalVars.appArgs.launcher)
	#Initialize the config path (make sure it exists)
	config.initConfigPath()
	log.info("Config dir: %s"%os.path.abspath(globalVars.appArgs.configPath))
	log.debug("loading config")
	import config
	config.initialize()
	if not globalVars.appArgs.minimal and config.conf["general"]["playStartAndExitSounds"]:
		try:
			nvwave.playWaveFile("waves\\start.wav")
		except:
			pass
	logHandler.setLogLevelFromConfig()
	try:
		lang = config.conf["general"]["language"]
		import languageHandler
		log.debug("setting language to %s"%lang)
		languageHandler.setLanguage(lang)
	except:
		log.warning("Could not set language to %s"%lang)
	import versionInfo
	log.info("NVDA version %s" % versionInfo.version)
	log.info("Using Windows version %s" % winVersion.winVersionText)
	log.info("Using Python version %s"%sys.version)
	log.info("Using comtypes version %s"%comtypes.__version__)
	import configobj
	log.info("Using configobj version %s with validate version %s"%(configobj.__version__,configobj.validate.__version__))
	# Set a reasonable timeout for any socket connections NVDA makes.
	import socket
	socket.setdefaulttimeout(10)
	log.debug("Initializing add-ons system")
	addonHandler.initialize()
	if globalVars.appArgs.disableAddons:
		log.info("Add-ons are disabled. Restart NVDA to enable them.")
	import appModuleHandler
	log.debug("Initializing appModule Handler")
	appModuleHandler.initialize()
	import NVDAHelper
	log.debug("Initializing NVDAHelper")
	NVDAHelper.initialize()
	import speechDictHandler
	log.debug("Speech Dictionary processing")
	speechDictHandler.initialize()
	import speech
	log.debug("Initializing speech")
	speech.initialize()
	if not globalVars.appArgs.minimal and (time.time()-globalVars.startTime)>5:
		log.debugWarning("Slow starting core (%.2f sec)" % (time.time()-globalVars.startTime))
		# Translators: This is spoken when NVDA is starting.
		speech.speakMessage(_("Loading NVDA. Please wait..."))
	import wx
	# wxPython 4 no longer has either of these constants (despite the documentation saying so), some add-ons may rely on
	# them so we add it back into wx. https://wxpython.org/Phoenix/docs/html/wx.Window.html#wx.Window.Centre
	wx.CENTER_ON_SCREEN = wx.CENTRE_ON_SCREEN = 0x2
	log.info("Using wx version %s"%wx.version())
	class App(wx.App):
		def OnAssert(self,file,line,cond,msg):
			message="{file}, line {line}:\nassert {cond}: {msg}".format(file=file,line=line,cond=cond,msg=msg)
			log.debugWarning(message,codepath="WX Widgets",stack_info=True)
	app = App(redirect=False)
	# We support queryEndSession events, but in general don't do anything for them.
	# However, when running as a Windows Store application, we do want to request to be restarted for updates
	def onQueryEndSession(evt):
		if config.isAppX:
			# Automatically restart NVDA on Windows Store update
			ctypes.windll.kernel32.RegisterApplicationRestart(None,0)
	app.Bind(wx.EVT_QUERY_END_SESSION, onQueryEndSession)
	def onEndSession(evt):
		# NVDA will be terminated as soon as this function returns, so save configuration if appropriate.
		config.saveOnExit()
		speech.cancelSpeech()
		if not globalVars.appArgs.minimal and config.conf["general"]["playStartAndExitSounds"]:
			try:
				nvwave.playWaveFile("waves\\exit.wav",async=False)
			except:
				pass
		log.info("Windows session ending")
	app.Bind(wx.EVT_END_SESSION, onEndSession)
	log.debug("Initializing braille input")
	import brailleInput
	brailleInput.initialize()
	import braille
	log.debug("Initializing braille")
	braille.initialize()
	import displayModel
	log.debug("Initializing displayModel")
	displayModel.initialize()
	log.debug("Initializing GUI")
	import gui
	gui.initialize()
	import audioDucking
	if audioDucking.isAudioDuckingSupported():
		# the GUI mainloop must be running for this to work so delay it
		wx.CallAfter(audioDucking.initialize)

	# #3763: In wxPython 3, the class name of frame windows changed from wxWindowClassNR to wxWindowNR.
	# NVDA uses the main frame to check for and quit another instance of NVDA.
	# To remain compatible with older versions of NVDA, create our own wxWindowClassNR.
	# We don't need to do anything else because wx handles WM_QUIT for all windows.
	import windowUtils
	class MessageWindow(windowUtils.CustomWindow):
		className = u"wxWindowClassNR"
		#Just define these constants here, so we don't have to import win32con
		WM_POWERBROADCAST = 0x218
		WM_DISPLAYCHANGE = 0x7e
		PBT_APMPOWERSTATUSCHANGE = 0xA
		UNKNOWN_BATTERY_STATUS = 0xFF
		AC_ONLINE = 0X1
		NO_SYSTEM_BATTERY = 0X80
		#States for screen orientation
		ORIENTATION_NOT_INITIALIZED = 0
		ORIENTATION_PORTRAIT = 1
		ORIENTATION_LANDSCAPE = 2

		def __init__(self, windowName=None):
			super(MessageWindow, self).__init__(windowName)
			self.oldBatteryStatus = None
			self.orientationStateCache = self.ORIENTATION_NOT_INITIALIZED
			self.orientationCoordsCache = (0,0)
			self.handlePowerStatusChange()

		def windowProc(self, hwnd, msg, wParam, lParam):
			post_windowMessageReceipt.notify(msg=msg, wParam=wParam, lParam=lParam)
			if msg == self.WM_POWERBROADCAST and wParam == self.PBT_APMPOWERSTATUSCHANGE:
				self.handlePowerStatusChange()
			elif msg == self.WM_DISPLAYCHANGE:
				self.handleScreenOrientationChange(lParam)

		def handleScreenOrientationChange(self, lParam):
			import ui
			import winUser
			# Resolution detection comes from an article found at https://msdn.microsoft.com/en-us/library/ms812142.aspx.
			#The low word is the width and hiword is height.
			width = winUser.LOWORD(lParam)
			height = winUser.HIWORD(lParam)
			self.orientationCoordsCache = (width,height)
			if width > height:
				# If the height and width are the same, it's actually a screen flip, and we do want to alert of those!
				if self.orientationStateCache == self.ORIENTATION_LANDSCAPE and self.orientationCoordsCache != (width,height):
					return
				#Translators: The screen is oriented so that it is wider than it is tall.
				ui.message(_("Landscape" ))
				self.orientationStateCache = self.ORIENTATION_LANDSCAPE
			else:
				if self.orientationStateCache == self.ORIENTATION_PORTRAIT and self.orientationCoordsCache != (width,height):
					return
				#Translators: The screen is oriented in such a way that the height is taller than it is wide.
				ui.message(_("Portrait"))
				self.orientationStateCache = self.ORIENTATION_PORTRAIT

		def handlePowerStatusChange(self):
			#Mostly taken from script_say_battery_status, but modified.
			import ui
			import winKernel
			sps = winKernel.SYSTEM_POWER_STATUS()
			if not winKernel.GetSystemPowerStatus(sps) or sps.BatteryFlag is self.UNKNOWN_BATTERY_STATUS:
				return
			if sps.BatteryFlag & self.NO_SYSTEM_BATTERY:
				return
			if self.oldBatteryStatus is None:
				#Just initializing the cache, do not report anything.
				self.oldBatteryStatus = sps.ACLineStatus
				return
			if sps.ACLineStatus == self.oldBatteryStatus:
				#Sometimes, this double fires. This also fires when the battery level decreases by 3%.
				return
			self.oldBatteryStatus = sps.ACLineStatus
			if sps.ACLineStatus & self.AC_ONLINE:
				#Translators: Reported when the battery is plugged in, and now is charging.
				ui.message(_("Charging battery. %d percent") % sps.BatteryLifePercent)
			else:
				#Translators: Reported when the battery is no longer plugged in, and now is not charging.
				ui.message(_("Not charging battery. %d percent") %sps.BatteryLifePercent)

	messageWindow = MessageWindow(unicode(versionInfo.name))

	# initialize wxpython localization support
	locale = wx.Locale()
	lang=languageHandler.getLanguage()
	wxLang=locale.FindLanguageInfo(lang)
	if not wxLang and '_' in lang:
		wxLang=locale.FindLanguageInfo(lang.split('_')[0])
	if hasattr(sys,'frozen'):
		locale.AddCatalogLookupPathPrefix(os.path.join(os.getcwdu(),"locale"))
	# #8064: Wx might know the language, but may not actually contain a translation database for that language.
	# If we try to initialize this language, wx will show a warning dialog.
	# Therefore treat this situation like wx not knowing the language at all.
	if not locale.IsAvailable(wxLang.Language):
		wxLang=None
	if wxLang:
		try:
			locale.Init(wxLang.Language)
		except:
			log.error("Failed to initialize wx locale",exc_info=True)
	else:
		log.debugWarning("wx does not support language %s" % lang)

	import api
	import winUser
	import NVDAObjects.window
	desktopObject=NVDAObjects.window.Window(windowHandle=winUser.getDesktopWindow())
	api.setDesktopObject(desktopObject)
	api.setFocusObject(desktopObject)
	api.setNavigatorObject(desktopObject)
	api.setMouseObject(desktopObject)
	import JABHandler
	log.debug("initializing Java Access Bridge support")
	try:
		JABHandler.initialize()
	except NotImplementedError:
		log.warning("Java Access Bridge not available")
	except:
		log.error("Error initializing Java Access Bridge support", exc_info=True)
	import winConsoleHandler
	log.debug("Initializing winConsole support")
	winConsoleHandler.initialize()
	import UIAHandler
	log.debug("Initializing UIA support")
	try:
		UIAHandler.initialize()
	except NotImplementedError:
		log.warning("UIA not available")
	except:
		log.error("Error initializing UIA support", exc_info=True)
	import IAccessibleHandler
	log.debug("Initializing IAccessible support")
	IAccessibleHandler.initialize()
	log.debug("Initializing input core")
	import inputCore
	inputCore.initialize()
	import keyboardHandler
	log.debug("Initializing keyboard handler")
	keyboardHandler.initialize()
	import mouseHandler
	log.debug("initializing mouse handler")
	mouseHandler.initialize()
	import touchHandler
	log.debug("Initializing touchHandler")
	try:
		touchHandler.initialize()
	except NotImplementedError:
		pass
	import globalPluginHandler
	log.debug("Initializing global plugin handler")
	globalPluginHandler.initialize()
	if globalVars.appArgs.install or globalVars.appArgs.installSilent:
		import gui.installerGui
		wx.CallAfter(gui.installerGui.doSilentInstall,startAfterInstall=not globalVars.appArgs.installSilent)
	elif globalVars.appArgs.portablePath and (globalVars.appArgs.createPortable or globalVars.appArgs.createPortableSilent):
		import gui.installerGui
		wx.CallAfter(gui.installerGui.doCreatePortable,portableDirectory=globalVars.appArgs.portablePath,
			silent=globalVars.appArgs.createPortableSilent,startAfterCreate=not globalVars.appArgs.createPortableSilent)
	elif not globalVars.appArgs.minimal:
		try:
			# Translators: This is shown on a braille display (if one is connected) when NVDA starts.
			braille.handler.message(_("NVDA started"))
		except:
			log.error("", exc_info=True)
		if globalVars.appArgs.launcher:
			gui.LauncherDialog.run()
			# LauncherDialog will call doStartupDialogs() afterwards if required.
		else:
			wx.CallAfter(doStartupDialogs)
	import queueHandler
	# Queue the handling of initial focus,
	# as API handlers might need to be pumped to get the first focus event.
	queueHandler.queueFunction(queueHandler.eventQueue, _setInitialFocus)
	import watchdog
	import baseObject

	# Doing this here is a bit ugly, but we don't want these modules imported
	# at module level, including wx.
	log.debug("Initializing core pump")
	class CorePump(gui.NonReEntrantTimer):
		"Checks the queues and executes functions."
		def run(self):
			global _isPumpPending
			_isPumpPending = False
			watchdog.alive()
			try:
				if touchHandler.handler:
					touchHandler.handler.pump()
				JABHandler.pumpAll()
				IAccessibleHandler.pumpAll()
				queueHandler.pumpAll()
				mouseHandler.pumpAll()
				braille.pumpAll()
			except:
				log.exception("errors in this core pump cycle")
			baseObject.AutoPropertyObject.invalidateCaches()
			watchdog.asleep()
			if _isPumpPending and not _pump.IsRunning():
				# #3803: Another pump was requested during this pump execution.
				# As our pump is not re-entrant, schedule another pump.
				_pump.Start(PUMP_MAX_DELAY, True)
	global _pump
	_pump = CorePump()
	requestPump()

	log.debug("Initializing watchdog")
	watchdog.initialize()
	try:
		import updateCheck
	except RuntimeError:
		updateCheck=None
		log.debug("Update checking not supported")
	else:
		log.debug("initializing updateCheck")
		updateCheck.initialize()
	log.info("NVDA initialized")
	postNvdaStartup.notify()

	log.debug("entering wx application main loop")
	app.MainLoop()

	log.info("Exiting")
	if updateCheck:
		_terminate(updateCheck)

	_terminate(watchdog)
	_terminate(globalPluginHandler, name="global plugin handler")
	_terminate(gui)
	config.saveOnExit()

	try:
		if globalVars.focusObject and hasattr(globalVars.focusObject,"event_loseFocus"):
			log.debug("calling lose focus on object with focus")
			globalVars.focusObject.event_loseFocus()
	except:
		log.exception("Lose focus error")
	try:
		speech.cancelSpeech()
	except:
		pass

	import treeInterceptorHandler
	_terminate(treeInterceptorHandler)
	_terminate(IAccessibleHandler, name="IAccessible support")
	_terminate(UIAHandler, name="UIA support")
	_terminate(winConsoleHandler, name="winConsole support")
	_terminate(JABHandler, name="Java Access Bridge support")
	_terminate(appModuleHandler, name="app module handler")
	_terminate(NVDAHelper)
	_terminate(touchHandler)
	_terminate(keyboardHandler, name="keyboard handler")
	_terminate(mouseHandler)
	_terminate(inputCore)
	_terminate(brailleInput)
	_terminate(braille)
	_terminate(speech)
	_terminate(addonHandler)

	if not globalVars.appArgs.minimal and config.conf["general"]["playStartAndExitSounds"]:
		try:
			nvwave.playWaveFile("waves\\exit.wav",async=False)
		except:
			pass
	# #5189: Destroy the message window as late as possible
	# so new instances of NVDA can find this one even if it freezes during exit.
	messageWindow.destroy()
	log.debug("core done")
Example #3
0
def main():
	"""NVDA's core main loop.
This initializes all modules such as audio, IAccessible, keyboard, mouse, and GUI. Then it initialises the wx application object and installs the core pump timer, which checks the queues and executes functions every 1 ms. Finally, it starts the wx main loop.
"""
	log.debug("Core starting")
	import config
	if not globalVars.appArgs.configPath:
		globalVars.appArgs.configPath=config.getUserDefaultConfigPath(useInstalledPathIfExists=globalVars.appArgs.launcher)
	#Initialize the config path (make sure it exists)
	config.initConfigPath()
	log.info("Config dir: %s"%os.path.abspath(globalVars.appArgs.configPath))
	log.debug("loading config")
	import config
	config.load()
	if not globalVars.appArgs.minimal:
		try:
			nvwave.playWaveFile("waves\\start.wav")
		except:
			pass
	logHandler.setLogLevelFromConfig()
	try:
		lang = config.conf["general"]["language"]
		import languageHandler
		log.debug("setting language to %s"%lang)
		languageHandler.setLanguage(lang)
	except:
		log.warning("Could not set language to %s"%lang)
	import versionInfo
	log.info("NVDA version %s" % versionInfo.version)
	log.info("Using Windows version %r" % (sys.getwindowsversion(),))
	log.info("Using Python version %s"%sys.version)
	log.info("Using comtypes version %s"%comtypes.__version__)
	# Set a reasonable timeout for any socket connections NVDA makes.
	import socket
	socket.setdefaulttimeout(10)
	log.debug("Initializing addons system.")
	addonHandler.initialize()
	import appModuleHandler
	log.debug("Initializing appModule Handler")
	appModuleHandler.initialize()
	import NVDAHelper
	log.debug("Initializing NVDAHelper")
	NVDAHelper.initialize()
	import speechDictHandler
	log.debug("Speech Dictionary processing")
	speechDictHandler.initialize()
	import speech
	log.debug("Initializing speech")
	speech.initialize()
	if not globalVars.appArgs.minimal and (time.time()-globalVars.startTime)>5:
		log.debugWarning("Slow starting core (%.2f sec)" % (time.time()-globalVars.startTime))
		# Translators: This is spoken when NVDA is starting.
		speech.speakMessage(_("Loading NVDA. Please wait..."))
	import wx
	log.info("Using wx version %s"%wx.version())
	app = wx.App(redirect=False)
	# HACK: wx currently raises spurious assertion failures when a timer is stopped but there is already an event in the queue for that timer.
	# Unfortunately, these assertion exceptions are raised in the middle of other code, which causes problems.
	# Therefore, disable assertions for now.
	app.SetAssertMode(wx.PYAPP_ASSERT_SUPPRESS)
	# We do support QueryEndSession events, but we don't want to do anything for them.
	app.Bind(wx.EVT_QUERY_END_SESSION, lambda evt: None)
	def onEndSession(evt):
		# NVDA will be terminated as soon as this function returns, so save configuration if appropriate.
		config.saveOnExit()
		speech.cancelSpeech()
		if not globalVars.appArgs.minimal:
			try:
				nvwave.playWaveFile("waves\\exit.wav",async=False)
			except:
				pass
		log.info("Windows session ending")
	app.Bind(wx.EVT_END_SESSION, onEndSession)
	import braille
	log.debug("Initializing braille")
	braille.initialize()
	log.debug("Initializing braille input")
	import brailleInput
	brailleInput.initialize()
	import displayModel
	log.debug("Initializing displayModel")
	displayModel.initialize()
	log.debug("Initializing GUI")
	import gui
	gui.initialize()
	# initialize wxpython localization support
	locale = wx.Locale()
	lang=languageHandler.getLanguage()
	if '_' in lang:
		wxLang=lang.split('_')[0]
	else:
		wxLang=lang
	if hasattr(sys,'frozen'):
		locale.AddCatalogLookupPathPrefix(os.path.join(os.getcwdu(),"locale"))
	try:
		locale.Init(lang,wxLang)
	except:
		pass
	import api
	import winUser
	import NVDAObjects.window
	desktopObject=NVDAObjects.window.Window(windowHandle=winUser.getDesktopWindow())
	api.setDesktopObject(desktopObject)
	api.setFocusObject(desktopObject)
	api.setNavigatorObject(desktopObject)
	api.setMouseObject(desktopObject)
	import JABHandler
	log.debug("initializing Java Access Bridge support")
	try:
		JABHandler.initialize()
	except NotImplementedError:
		log.warning("Java Access Bridge not available")
	except:
		log.error("Error initializing Java Access Bridge support", exc_info=True)
	import winConsoleHandler
	log.debug("Initializing winConsole support")
	winConsoleHandler.initialize()
	import UIAHandler
	log.debug("Initializing UIA support")
	try:
		UIAHandler.initialize()
	except NotImplementedError:
		log.warning("UIA not available")
	except:
		log.error("Error initializing UIA support", exc_info=True)
	import IAccessibleHandler
	log.debug("Initializing IAccessible support")
	IAccessibleHandler.initialize()
	log.debug("Initializing input core")
	import inputCore
	inputCore.initialize()
	import keyboardHandler
	log.debug("Initializing keyboard handler")
	keyboardHandler.initialize()
	import mouseHandler
	log.debug("initializing mouse handler")
	mouseHandler.initialize()
	import touchHandler
	log.debug("Initializing touchHandler")
	try:
		touchHandler.initialize()
	except NotImplementedError:
		pass
	import globalPluginHandler
	log.debug("Initializing global plugin handler")
	globalPluginHandler.initialize()
	if globalVars.appArgs.install:
		import wx
		import gui.installerGui
		wx.CallAfter(gui.installerGui.doSilentInstall)
	elif not globalVars.appArgs.minimal:
		try:
			# Translators: This is shown on a braille display (if one is connected) when NVDA starts.
			braille.handler.message(_("NVDA started"))
		except:
			log.error("", exc_info=True)
		if globalVars.appArgs.launcher:
			gui.LauncherDialog.run()
			# LauncherDialog will call doStartupDialogs() afterwards if required.
		else:
			wx.CallAfter(doStartupDialogs)
	import queueHandler
	# Queue the handling of initial focus,
	# as API handlers might need to be pumped to get the first focus event.
	queueHandler.queueFunction(queueHandler.eventQueue, _setInitialFocus)
	import watchdog
	import baseObject
	class CorePump(wx.Timer):
		"Checks the queues and executes functions."
		def __init__(self,*args,**kwargs):
			log.debug("Core pump starting")
			super(CorePump,self).__init__(*args,**kwargs)
		def Notify(self):
			try:
				JABHandler.pumpAll()
				IAccessibleHandler.pumpAll()
				queueHandler.pumpAll()
				mouseHandler.pumpAll()
				braille.pumpAll()
			except:
				log.exception("errors in this core pump cycle")
			baseObject.AutoPropertyObject.invalidateCaches()
			watchdog.alive()
	log.debug("starting core pump")
	pump = CorePump()
	pump.Start(1)
	log.debug("Initializing watchdog")
	watchdog.initialize()
	try:
		import updateCheck
	except RuntimeError:
		updateCheck=None
		log.debug("Update checking not supported")
	else:
		log.debug("initializing updateCheck")
		updateCheck.initialize()
	log.info("NVDA initialized")

	log.debug("entering wx application main loop")
	app.MainLoop()

	log.info("Exiting")
	if updateCheck:
		log.debug("Terminating updateCheck")
		updateCheck.terminate()
	log.debug("Terminating watchdog")
	watchdog.terminate()
	log.debug("Terminating global plugin handler")
	globalPluginHandler.terminate()
	log.debug("Terminating GUI")
	gui.terminate()
	config.saveOnExit()
	try:
		if globalVars.focusObject and hasattr(globalVars.focusObject,"event_loseFocus"):
			log.debug("calling lose focus on object with focus")
			globalVars.focusObject.event_loseFocus()
	except:
		log.error("Lose focus error",exc_info=True)
	try:
		speech.cancelSpeech()
	except:
		pass
	log.debug("Cleaning up running treeInterceptors")
	try:
		import treeInterceptorHandler
		treeInterceptorHandler.terminate()
	except:
		log.error("Error cleaning up treeInterceptors",exc_info=True)
	log.debug("Terminating IAccessible support")
	try:
		IAccessibleHandler.terminate()
	except:
		log.error("Error terminating IAccessible support",exc_info=True)
	log.debug("Terminating UIA support")
	try:
		UIAHandler.terminate()
	except:
		log.error("Error terminating UIA support",exc_info=True)
	log.debug("Terminating winConsole support")
	try:
		winConsoleHandler.terminate()
	except:
		log.error("Error terminating winConsole support",exc_info=True)
	log.debug("Terminating Java Access Bridge support")
	try:
		JABHandler.terminate()
	except:
		log.error("Error terminating Java Access Bridge support",exc_info=True)
	log.debug("Terminating app module handler")
	appModuleHandler.terminate()
	log.debug("Terminating NVDAHelper")
	try:
		NVDAHelper.terminate()
	except:
		log.error("Error terminating NVDAHelper",exc_info=True)
	log.debug("Terminating touchHandler")
	try:
		touchHandler.terminate()
	except:
		log.error("Error terminating touchHandler")
	log.debug("Terminating keyboard handler")
	try:
		keyboardHandler.terminate()
	except:
		log.error("Error terminating keyboard handler")
	log.debug("Terminating mouse handler")
	try:
		mouseHandler.terminate()
	except:
		log.error("error terminating mouse handler",exc_info=True)
	log.debug("Terminating input core")
	inputCore.terminate()
	log.debug("Terminating brailleInput")
	brailleInput.terminate()
	log.debug("Terminating braille")
	try:
		braille.terminate()
	except:
		log.error("Error terminating braille",exc_info=True)
	log.debug("Terminating speech")
	try:
		speech.terminate()
	except:
		log.error("Error terminating speech",exc_info=True)
	try:
		addonHandler.terminate()
	except:
		log.error("Error terminating addonHandler",exc_info=True)
	if not globalVars.appArgs.minimal:
		try:
			nvwave.playWaveFile("waves\\exit.wav",async=False)
		except:
			pass
	log.debug("core done")