webcamviewer/src/PictureScreen.py

   1 from enigma import loadPic
   2 from enigma import eTimer
   3 from enigma import getDesktop
   4
   5 from Screens.Screen import Screen
   6 from Components.AVSwitch import AVSwitch
   7 from Components.config import config
   8 from Components.Pixmap import Pixmap
   9 from Components.ActionMap import ActionMap
  10 from twisted.web.client import downloadPage
  11
  12 class PictureScreen(Screen):
  13     skin = ""
  14     prozessing =False # if fetching or converting is active
  15     autoreload =False
  16     def __init__(self, session,title,filename, slideshowcallback = None,args=0):
  17         self.session=session
  18         self.slideshowcallback=slideshowcallback
  19         self.screentitle = title
  20         ##
  21         size_w = getDesktop(0).size().width()
  22         size_h = getDesktop(0).size().height()
  23         self.skin = """
  24         <screen position="0,0" size="%i,%i" title="%s" flags=\"wfNoBorder\">
  25              <widget name="pixmap" position="0,0" size="%i,%i" backgroundColor=\"black\"/>
  26         </screen>""" % (size_w,size_h,filename,size_w,size_h)
  27         Screen.__init__(self, session)
  28         self.filename = filename
  29         self["pixmap"] = Pixmap()
  30
  31         self["actions"] = ActionMap(["WizardActions", "DirectionActions","ChannelSelectBaseActions","ShortcutActions"],
  32             {
  33              "ok": self.do,
  34              "back": self.exit,
  35              "green":self.AutoReloaderSwitch,
  36              }, -1)
  37
  38         self.onLayoutFinish.append(self.do)
  39
  40     def AutoReloaderSwitch(self):
  41         if self.filename.startswith("http") or self.filename.startswith("ftp"):
  42             if self.autoreload is False:
  43                 self.autoreload = True
  44                 self.do()
  45             else:
  46                 self.autoreload = False
  47
  48     def do(self):
  49         if self.prozessing:
  50             pass
  51         elif self.filename.startswith("http") or self.filename.startswith("ftp"):
  52             self.fetchFile(self.filename)
  53         else:
  54             self.sourcefile = self.filename
  55             self.setPicture(self.filename)
  56
  57     def exit(self):
  58         self.cleanUP()
  59         self.close()
  60
  61     def cleanUP(self):
  62         try:
  63             if os.path.exists("/tmp/loadedfile"):
  64                 os.remove("/tmp/loadedfile")
  65         except:## OSerror??
  66             pass
  67
  68     def fetchFile(self,url):
  69         self.prozessing =True
  70         self.setTitle("loading File")
  71         print "fetching URL ",url
  72         self.sourcefile = "/tmp/loadedfile"
  73         downloadPage(url,self.sourcefile).addCallback(self.fetchFinished).addErrback(self.fetchFailed)
  74
  75
  76     def fetchFailed(self,string):
  77         print "fetch failed",string
  78         self.setTitle( "fetch failed: "+string)
  79
  80     def fetchFinished(self,string):
  81         print "fetching finished "
  82         self.setPicture(self.sourcefile)
  83
  84     def setPicture(self,string):
  85         self.setTitle(self.filename.split("/")[-1])
  86         pixmap = loadPic(string,getDesktop(0).size().width(),getDesktop(0).size().height(), AVSwitch().getAspectRatioSetting()/2,1, 0,1)
  87         if pixmap is not None:
  88             self["pixmap"].instance.setPixmap(pixmap)
  89         self.prozessing =False
  90
  91         if self.autoreload is True:
  92                 self.cleanUP()
  93                 self.do()
  94         elif self.slideshowcallback is not None:
  95                 self.closetimer = eTimer()
  96                 self.closetimer.timeout.get().append(self.slideshowcallback)
  97                 print "waiting ",config.plugins.pictureviewer.slideshowtime.value," seconds for next picture"
  98                 self.closetimer.start(int(config.plugins.pictureviewer.slideshowtime.value))
  99