Archived:A simple screensaver in PySymbian

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24 Sep
2009

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Aquivado: Este artigo foi arquivado, pois o conteúdo não é mais considerado relevante para se criar soluções comerciais atuais. Se você achar que este artigo ainda é importante, inclua o template {{ForArchiveReview|escreva a sua justificativa}}.

All PySymbian articles have been archived. PySymbian is no longer maintained by Nokia and is not guaranteed to work on more recent Symbian devices. It is not possible to submit apps to Nokia Store.

This is an example of a simple PySymbian screensaver.

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Article

Created: bogdan.galiceanu (29 Mar 2008)

Last edited: hamishwillee (08 May 2013)

import appuifw, e32
from time import *
from graphics import *
 
app_lock=e32.Ao_lock()
def quit():
   global running
   running=0
   app_lock.signal()
appuifw.app.exit_key_handler=quit
 
#We create the background, a blank image
bg=Image.new((240,320))        #These dimensions are purely orientational. For best results, adapt them to your device
 
#Now we create a white rectangle that will hold the date and time, for example
dt=Image.new((240,160))
 
#The screensaver takes up the entire screen
appuifw.app.screen="full"
 
y=0
coord_inc=0
running=1
while(running==1):
   if(e32.inactivity()>=5):  #The screensaver kicks in after 5 seconds of user inactivity
      #The background and the area displaying date and time are cleared
      bg.clear()
      dt.clear()
 
      #The date and time are stored as unicode strings
      year=str(localtime()[0])
      month=str(localtime()[1])
      day=str(localtime()[2])
      date=u"%s/%s/%s" % (day,month,year)
      if(localtime()[4]<10):min="0"+str(localtime()[4])
      else:min=str(localtime()[4])
      if(localtime()[5]<10):sec="0"+str(localtime()[5])
      else:sec=str(localtime()[5])
      time=u"%d:%s:%s" % (localtime()[3],min,sec)
 
      #We write the information on the rectangle:
      dt.text((80,25), date, font="annotation")
      dt.text((70,50), time, font="title")
 
      #We place the rectangle on the background
      bg.blit(dt, target=(0,y))
      #We increase the y coordinate to tell the program where to show the rectangle next
      if(coord_inc==0):
         y+=160
         coord_inc=1   #Tells that y has been increased
      else:
         y=0
         coord_inc=0
 
      #We set the background:
      def handle_redraw(rect):canvas.blit(bg)
      canvas=appuifw.Canvas(event_callback=None, redraw_callback=handle_redraw)
      appuifw.app.body=canvas
 
      #Tell it to wait 5 seconds before moving the information
      e32.ao_sleep(5)

Screenshot: