264 lines
15 KiB
Python
264 lines
15 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 fenrirscreenreader.core import debug
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from fenrirscreenreader.utils import screen_utils
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import time, os, re, difflib
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class screenManager():
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def __init__(self):
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self.currScreenIgnored = False
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self.prevScreenIgnored = False
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self.toggleDeviceGrab = False
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def initialize(self, environment):
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self.env = environment
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self.env['runtime']['settingsManager'].loadDriver(\
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self.env['runtime']['settingsManager'].getSetting('screen', 'driver'), 'screenDriver')
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self.getCurrScreen()
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self.getCurrScreen()
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self.getSessionInformation()
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def getCurrScreen(self):
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try:
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self.env['runtime']['screenDriver'].getCurrScreen()
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except:
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pass
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def getSessionInformation(self):
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try:
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self.env['runtime']['screenDriver'].getSessionInformation()
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except:
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pass
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def shutdown(self):
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self.env['runtime']['settingsManager'].shutdownDriver('screenDriver')
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def hanldeScreenChange(self, eventData):
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self.getCurrScreen()
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self.getSessionInformation()
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if self.isScreenChange():
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self.changeBrailleScreen()
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if not self.isSuspendingScreen(self.env['screen']['newTTY']):
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self.update(eventData, 'onScreenChange')
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self.env['screen']['lastScreenUpdate'] = time.time()
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def handleDeviceGrab(self):
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if not self.env['runtime']['settingsManager'].getSettingAsBool('keyboard', 'grabDevices'):
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return
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if self.getCurrScreenIgnored() != self.getPrevScreenIgnored():
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self.toggleDeviceGrab = True
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if self.toggleDeviceGrab:
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if self.env['runtime']['inputManager'].noKeyPressed():
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if self.getCurrScreenIgnored():
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self.env['runtime']['inputManager'].ungrabAllDevices()
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self.env['runtime']['outputManager'].interruptOutput()
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else:
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self.env['runtime']['inputManager'].grabAllDevices()
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self.toggleDeviceGrab = False
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def handleScreenUpdate(self, eventData):
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self.env['screen']['oldApplication'] = self.env['screen']['newApplication']
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self.updateScreenIgnored()
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self.handleDeviceGrab()
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if not self.getCurrScreenIgnored():
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self.update(eventData, 'onScreenUpdate')
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#if trigger == 'onUpdate' or self.isScreenChange() \
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# or len(self.env['screen']['newDelta']) > 6:
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# self.env['runtime']['screenDriver'].getCurrApplication()
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self.env['screen']['lastScreenUpdate'] = time.time()
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def getCurrScreenIgnored(self):
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return self.currScreenIgnored
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def getPrevScreenIgnored(self):
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return self.prevScreenIgnored
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def updateScreenIgnored(self):
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self.prevScreenIgnored = self.currScreenIgnored
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self.currScreenIgnored = self.isSuspendingScreen(self.env['screen']['newTTY'])
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def update(self, eventData, trigger='onUpdate'):
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# set new "old" values
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self.env['screen']['oldContentBytes'] = self.env['screen']['newContentBytes']
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self.env['screen']['oldContentText'] = self.env['screen']['newContentText']
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self.env['screen']['oldContentAttrib'] = self.env['screen']['newContentAttrib']
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self.env['screen']['oldCursor'] = self.env['screen']['newCursor'].copy()
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if self.env['screen']['newCursorAttrib']:
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self.env['screen']['oldCursorAttrib'] = self.env['screen']['newCursorAttrib'].copy()
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self.env['screen']['oldDelta'] = self.env['screen']['newDelta']
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self.env['screen']['oldAttribDelta'] = self.env['screen']['newAttribDelta']
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self.env['screen']['oldNegativeDelta'] = self.env['screen']['newNegativeDelta']
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self.env['screen']['newContentBytes'] = eventData['bytes']
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# get metadata like cursor or screensize
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self.env['screen']['lines'] = int( eventData['lines'])
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self.env['screen']['columns'] = int( eventData['columns'])
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self.env['screen']['newCursor']['x'] = int( eventData['textCursor']['x'])
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self.env['screen']['newCursor']['y'] = int( eventData['textCursor']['y'])
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self.env['screen']['newTTY'] = eventData['screen']
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self.env['screen']['newContentText'] = eventData['text']
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self.env['screen']['newContentAttrib'] = eventData['attributes']
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# screen change
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if self.env['screen']['newTTY'] != self.env['screen']['oldTTY']:
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self.env['screen']['oldContentBytes'] = b''
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self.env['screen']['oldContentAttrib'] = None
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self.env['screen']['oldContentText'] = ''
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self.env['screen']['oldCursor']['x'] = 0
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self.env['screen']['oldCursor']['y'] = 0
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self.env['screen']['oldDelta'] = ''
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self.env['screen']['oldAttribDelta'] = ''
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self.env['screen']['oldCursorAttrib'] = None
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self.env['screen']['newCursorAttrib'] = None
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self.env['screen']['oldNegativeDelta'] = ''
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# initialize current deltas
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self.env['screen']['newNegativeDelta'] = ''
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self.env['screen']['newDelta'] = ''
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self.env['screen']['newAttribDelta'] = ''
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# changes on the screen
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oldScreenText = re.sub(' +',' ',self.env['runtime']['screenManager'].getWindowAreaInText(self.env['screen']['oldContentText']))
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newScreenText = re.sub(' +',' ',self.env['runtime']['screenManager'].getWindowAreaInText(self.env['screen']['newContentText']))
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typing = False
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diffList = []
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if (self.env['screen']['oldContentText'] != self.env['screen']['newContentText']):
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if self.env['screen']['newContentText'] != '' and self.env['screen']['oldContentText'] == '':
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if oldScreenText == '' and\
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newScreenText != '':
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self.env['screen']['newDelta'] = newScreenText
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else:
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cursorLineStart = self.env['screen']['newCursor']['y'] * self.env['screen']['columns'] + self.env['screen']['newCursor']['y']
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cursorLineEnd = cursorLineStart + self.env['screen']['columns']
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if abs(self.env['screen']['oldCursor']['x'] - self.env['screen']['newCursor']['x']) >= 1 and \
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self.env['screen']['oldCursor']['y'] == self.env['screen']['newCursor']['y'] and \
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self.env['screen']['newContentText'][:cursorLineStart] == self.env['screen']['oldContentText'][:cursorLineStart] and \
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self.env['screen']['newContentText'][cursorLineEnd:] == self.env['screen']['oldContentText'][cursorLineEnd:]:
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cursorLineStartOffset = cursorLineStart
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cursorLineEndOffset = cursorLineEnd
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#if cursorLineStart < cursorLineStart + self.env['screen']['newCursor']['x'] - 4:
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# cursorLineStartOffset = cursorLineStart + self.env['screen']['newCursor']['x'] - 4
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if cursorLineEnd > cursorLineStart + self.env['screen']['newCursor']['x'] + 3:
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cursorLineEndOffset = cursorLineStart + self.env['screen']['newCursor']['x'] + 3
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oldScreenText = self.env['screen']['oldContentText'][cursorLineStartOffset:cursorLineEndOffset]
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# oldScreenText = re.sub(' +',' ',oldScreenText)
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newScreenText = self.env['screen']['newContentText'][cursorLineStartOffset:cursorLineEndOffset]
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#newScreenText = re.sub(' +',' ',newScreenText)
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diff = difflib.ndiff(oldScreenText, newScreenText)
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diffList = list(diff)
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tempNewDelta = ''.join(x[2:] for x in diffList if x[0] == '+')
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if tempNewDelta.strip() != '':
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if tempNewDelta != ''.join(newScreenText[self.env['screen']['oldCursor']['x']:self.env['screen']['newCursor']['x']].rstrip()):
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diffList = ['+ ' + self.env['screen']['newContentText'].split('\n')[self.env['screen']['newCursor']['y']]]
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typing = True
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else:
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diff = difflib.ndiff( oldScreenText.split('\n'),\
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newScreenText.split('\n'))
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diffList = list(diff)
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if self.env['runtime']['settingsManager'].getSetting('general', 'newLinePause') and not typing:
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self.env['screen']['newDelta'] = '\n'.join(x[2:] for x in diffList if x[0] == '+')
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else:
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self.env['screen']['newDelta'] = ''.join(x[2:] for x in diffList if x[0] == '+')
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self.env['screen']['newNegativeDelta'] = ''.join(x[2:] for x in diffList if x[0] == '-')
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# track highlighted
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if self.env['screen']['oldContentAttrib'] != self.env['screen']['newContentAttrib']:
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if self.env['runtime']['settingsManager'].getSettingAsBool('focus', 'highlight'):
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self.env['screen']['newAttribDelta'], self.env['screen']['newCursorAttrib'] = screen_utils.trackHighlights(self.env['screen']['oldContentAttrib'], self.env['screen']['newContentAttrib'], self.env['screen']['newContentText'], self.env['screen']['columns'])
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def formatAttributes(self, attribute, attributeFormatString = None):
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if not attributeFormatString:
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attributeFormatString = self.env['runtime']['settingsManager'].getSetting('general', 'attributeFormatString')
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if not attributeFormatString:
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return ''
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if attributeFormatString == '':
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return ''
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try:
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attributeFormatString = attributeFormatString.replace('fenrirBGColor', self.env['runtime']['screenDriver'].getFenrirBGColor(attribute))
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except Exception as e:
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pass
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try:
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attributeFormatString = attributeFormatString.replace('fenrirFGColor', self.env['runtime']['screenDriver'].getFenrirFGColor(attribute))
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except Exception as e:
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pass
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try:
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attributeFormatString = attributeFormatString.replace('fenrirUnderline', self.env['runtime']['screenDriver'].getFenrirUnderline(attribute))
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except Exception as e:
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pass
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try:
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attributeFormatString = attributeFormatString.replace('fenrirBold', self.env['runtime']['screenDriver'].getFenrirBold(attribute))
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except Exception as e:
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pass
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try:
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attributeFormatString = attributeFormatString.replace('fenrirBlink', self.env['runtime']['screenDriver'].getFenrirBlink(attribute))
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except Exception as e:
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pass
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try:
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attributeFormatString = attributeFormatString.replace('fenrirFontSize', self.env['runtime']['screenDriver'].getFenrirFontSize(attribute))
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except Exception as e:
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pass
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try:
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attributeFormatString = attributeFormatString.replace('fenrirFont', self.env['runtime']['screenDriver'].getFenrirFont(attribute))
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except Exception as e:
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pass
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return attributeFormatString
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def isSuspendingScreen(self, screen = None):
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if screen == None:
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screen = self.env['screen']['newTTY']
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ignoreScreens = []
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fixIgnoreScreens = self.env['runtime']['settingsManager'].getSetting('screen', 'suspendingScreen')
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if fixIgnoreScreens != '':
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ignoreScreens.extend(fixIgnoreScreens.split(','))
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if self.env['runtime']['settingsManager'].getSettingAsBool('screen', 'autodetectSuspendingScreen'):
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ignoreScreens.extend(self.env['screen']['autoIgnoreScreens'])
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self.env['runtime']['debug'].writeDebugOut('screenManager:isSuspendingScreen ' + str(ignoreScreens) + ' '+ str(self.env['screen']['newTTY']),debug.debugLevel.INFO)
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try:
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ignoreFileName = self.env['runtime']['settingsManager'].getSetting('screen', 'suspendingScreenFile')
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if ignoreFileName != '':
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if os.access(ignoreFileName, os.R_OK):
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with open(ignoreFileName) as fp:
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ignoreScreens.extend(fp.read().replace('\n','').split(','))
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except:
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pass
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return (screen in ignoreScreens)
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def isScreenChange(self):
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if not self.env['screen']['oldTTY']:
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return False
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return self.env['screen']['newTTY'] != self.env['screen']['oldTTY']
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def isDelta(self, ignoreSpace=False):
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newDelta = self.env['screen']['newDelta']
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if ignoreSpace:
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newDelta = newDelta.strip()
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return newDelta != ''
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def isNegativeDelta(self):
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return self.env['screen']['newNegativeDelta'] != ''
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def getWindowAreaInText(self, text):
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if not self.env['runtime']['cursorManager'].isApplicationWindowSet():
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return text
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windowText = ''
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windowList = text.split('\n')
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currApp = self.env['runtime']['applicationManager'].getCurrentApplication()
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windowList = windowList[self.env['commandBuffer']['windowArea'][currApp]['1']['y']:self.env['commandBuffer']['windowArea'][currApp]['2']['y'] + 1]
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for line in windowList:
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windowText += line[self.env['commandBuffer']['windowArea'][currApp]['1']['x']:self.env['commandBuffer']['windowArea'][currApp]['2']['x'] + 1] + '\n'
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return windowText
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def injectTextToScreen(self, text, screen = None):
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try:
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self.env['runtime']['screenDriver'].injectTextToScreen(text, screen)
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except Exception as e:
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self.env['runtime']['debug'].writeDebugOut('screenManager:injectTextToScreen ' + str(e),debug.debugLevel.ERROR)
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def changeBrailleScreen(self):
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if not self.env['runtime']['settingsManager'].getSettingAsBool('braille', 'enabled'):
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return
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if not self.env['runtime']['brailleDriver']:
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return
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if self.env['screen']['oldTTY']:
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if not self.isSuspendingScreen(self.env['screen']['oldTTY']):
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try:
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self.env['runtime']['brailleDriver'].leveScreen()
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except Exception as e:
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self.env['runtime']['debug'].writeDebugOut('screenManager:changeBrailleScreen:leveScreen ' + str(e),debug.debugLevel.ERROR)
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if not self.isSuspendingScreen():
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try:
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self.env['runtime']['brailleDriver'].enterScreen(self.env['screen']['newTTY'])
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except Exception as e:
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self.env['runtime']['debug'].writeDebugOut('screenManager:changeBrailleScreen:enterScreen ' + str(e),debug.debugLevel.ERROR)
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