Coverage for gws-app/gws/plugin/tile_layer/provider.py: 0%

1"""Tile provider.""" 

2 

3from typing import Optional, cast 

4 

5import gws 

6import gws.base.layer 

7import gws.config.util 

8import gws.gis.crs 

9import gws.gis.extent 

10import gws.gis.zoom 

11import gws.lib.metadata 

12import gws.lib.net 

13 

14 

15class Config(gws.Config): 

16 maxRequests: int = 0 

17 """max concurrent requests to this source""" 

18 url: gws.Url 

19 """rest url with placeholders {x}, {y} and {z}""" 

20 grid: Optional[gws.base.layer.GridConfig] 

21 """source grid""" 

22 

23 

24class Object(gws.Node): 

25 url: gws.Url 

26 grid: Optional[gws.TileGrid] 

27 maxRequests: int 

28 

29 def configure(self): 

30 self.url = self.cfg('url') 

31 self.maxRequests = self.cfg('maxRequests') 

32 

33 p = self.cfg('grid', default=gws.Config()) 

34 self.grid = gws.TileGrid( 

35 origin=p.origin or gws.Origin.nw, 

36 tileSize=p.tileSize or 256, 

37 ) 

38 crs = p.crs or gws.gis.crs.WEBMERCATOR 

39 extent = p.extent or (gws.gis.crs.WEBMERCATOR_SQUARE if crs == gws.gis.crs.WEBMERCATOR else crs.extent) 

40 self.grid.bounds = gws.Bounds(crs=crs, extent=extent) 

41 self.grid.resolutions = ( 

42 p.resolutions or 

43 gws.gis.zoom.resolutions_from_bounds(self.grid.bounds, self.grid.tileSize))