code.vuplus.com Git - vuplus_dvbapp-plugin/blob - googlemaps/src/KMLlib.py

   1 from globalmaptiles import GlobalMercator
   2 from xml.dom.minidom import parse
   3 from os import listdir
   4
   5 class KmlPlace:
   6     def __init__(self,kmlnode):
   7         self.kmlnode = kmlnode
   8         self.name = kmlnode.getElementsByTagName('name')[0].firstChild.data.encode("utf-8")
   9         lons = kmlnode.getElementsByTagName('LookAt')[0].getElementsByTagName('longitude')[0].firstChild.data.encode("utf-8")
  10         lats = kmlnode.getElementsByTagName('LookAt')[0].getElementsByTagName('latitude')[0].firstChild.data.encode("utf-8")
  11
  12         lat = float(lats)
  13         lon = float(lons)
  14         if lat<0.0:
  15             lat = lat*(-1.0)
  16         if lon<0.0:
  17             lon=lon*(-1.0)
  18         self.lat = lat
  19         self.lon = lon
  20
  21     def getTile(self,zoomlevel):
  22         mercator = GlobalMercator()
  23         mx, my = mercator.LatLonToMeters( self.lat, self.lon )
  24         tminx, tminy = mercator.MetersToTile( mx, my, zoomlevel )
  25         gx, gy = mercator.GoogleTile(tminx, tminy, zoomlevel)#+1?
  26         return gx,gy,zoomlevel
  27
  28     def __str__(self):
  29         return "KmlPlace ('"+self.name+"','"+str(self.lat)+"','"+str(self.lon)+"')"
  30
  31 class KmlFolder:
  32     parent = None
  33     def __init__(self,kmlnode):
  34         self.kmlnode = kmlnode
  35         self.name = kmlnode.getElementsByTagName('name')[0].firstChild.data.encode("utf-8")
  36
  37     def getFolders(self):
  38         list = []
  39         for i in self.kmlnode.getElementsByTagName('Folder'):
  40             folder = KmlFolder(i)
  41             folder.parent = self
  42             list.append(folder)
  43         #list.pop(0)
  44         return list
  45
  46     def getPlacemarks(self):
  47         list = []
  48         for i in self.kmlnode.getElementsByTagName('Placemark'):
  49             point = KmlPlace(i)
  50             try: # test if we can handle this coords
  51                 point.getTile(15)# 15 is just a zoomlevel in the middle :)
  52                 list.append(point)
  53             except ValueError,e:
  54                 print "Import Error: ",point.name,e
  55         return list
  56
  57 class RootFolder:
  58     extension = '.kml'
  59     def __init__(self):
  60         pass
  61
  62     def getFolderFromFile(self,filepath):
  63         return KmlFolder(self.parseFile(filepath))
  64
  65     def parseFile(self,filepath):
  66         print "parsing ",filepath
  67         return parse(filepath)
  68
  69     def getFiles(self,path):
  70         list = []
  71         for file in listdir(path):
  72             if file.endswith(self.extension):
  73                 list.append((file.split('.')[0],path+file))
  74         return list
  75