コード例 #1
0
ファイル: qosmtilelayer.py プロジェクト: paleolimbot/qosm
 def refreshtiles_get(self, canvasextent, canvascrs, widthpx, forcedownload=False, cancelledcallback=None):
     extll = osm.unproject(canvasextent, canvascrs)
     
     zoom = self.zoom(widthpx, extll)
     if zoom is None or self.tiletype is None:
         return list(self.loadedlayers.keys()), [], []
     
     tiles = osm.tiles(extll.xMinimum(), extll.xMaximum(), 
                       extll.yMinimum(), extll.yMaximum(), zoom)
     
     if forcedownload:
         tilestoclean = list(self.loadedlayers.keys())
         tilestoload = tiles
     else:
         loadedtiles = set(self.loadedlayers.keys())
         tilestoclean = loadedtiles.difference(set(tiles))
         tilestoload = list(set(tiles).difference(loadedtiles))
     
     #calculate file names and urls
     cachedir = qosmsettings.get(qosmsettings.CACHE_DIRECTORY)
     tilefiles = [tm.filename(cachedir, self.tiletype, tile, zoom) for tile in tilestoload]
     tileurls = [tm.tileurl(self.tiletype, tile, zoom) for tile in tilestoload]
     
     if qosmsettings.get(qosmsettings.AUTODOWNLOAD):
         #download (keep on same thread for now)
         if not cancelledcallback:
             cancelledcallback = lambda: False
         dlerrors = []
         downloader.download(tileurls, tilefiles, overwrite=forcedownload, 
                             errorhandler=dlerrors.append, 
                             cancelledcallback=cancelledcallback)
         if dlerrors:
             self.rendererrors += 1
     
     return tilestoclean, tilestoload, tilefiles
コード例 #2
0
ファイル: dialog_cachetiles.py プロジェクト: paleolimbot/qosm
 def run(self):
     log("ensuring %s tiles are downloaded" % len(self.tilelist))
     cachedir = qosmsettings.get(qosmsettings.CACHE_DIRECTORY)
     tilefiles = [tm.filename(cachedir, self.tiletype, tile[0:2], tile[2]) for tile in self.tilelist]
     tileurls = [tm.tileurl(self.tiletype, tile[0:2], tile[2]) for tile in self.tilelist]
     
     if not self.overwrite:
         #remove existing files
         indicies = []
         for i in range(len(tilefiles)):
             if os.path.exists(tilefiles[i]):
                 indicies.append(i)
         log("removing %s tiles that already exist" % len(indicies))
         for i in reversed(indicies):
             tilefiles.pop(i)
             tileurls.pop(i)
     
     downloader.download(tileurls, tilefiles, self.overwrite, errorhandler=self.emiterror, progresshandler=self.emitprogress,
                         cancelledcallback=self.isCancelled)