[M89SE]

@samueljones 

OK, first you need to decide in which window you would like to add this function, eg. script-tvguide-main.xml or else.

Lets say you choose script-tvguide-main.

Open gui.py and find class TVGuide, then from self.program you need to extract program.startDate and program.endDate, I think this should also be possible in TVGF. 

Create a new defining function (def) 

python:
def calcTime(self):

    startDelta = datetime.datetime.now() - self.program.startDate

    endDelta = datetime.datetime.now() - self.program.endDate



    s = (endDelta - startDelta)



    s = re.sub(r'^0:', '', str(s))

    s = re.sub(r':00$', 'min', str(s))

    s = re.sub(':', 'h', str(s))

    matchHour = re.search(r'h\d+min$', s)

    matchMin = re.search(r'^0\dmin', s)



    if matchHour:

        s = re.sub(r'min$', '', str(s))



    elif matchMin:

        s = re.sub(r'^0', '', str(s))



    self.setControlLabel(C_MAIN_CALC_TIME_EPG, '%s' % (s))

Add self.calcTime() to "def onInit(self):" at the end.

Then create an ID number for C_MAIN_CALC_TIME_EPG and add it to class TVGuide(xbmcgui.WindowXML):.

eg.
C_MAIN_CALC_TIME_EPG = 4232

Open up script-tvguide-main.xml and add a new label with ID 4232, now the function should be visible in time format: hours "1h 00" or minutes "60 min".


I might be a bit wrong and I haven't tested this implementation myself in TVGF.