Package mapproxy :: Package wms :: Module cache :: Class WMSTileSource

Class WMSTileSource

           object --+    
                    |    
core.cache.TileSource --+
                        |
                       WMSTileSource

This TileSource retrieves new tiles from a WMS server.

This class is able to request maps that are larger than one tile and split the large map into multiple tiles. The meta_size defines how many tiles should be generated per request.

Instance Methods

[hide private]

__init__(self, grid, clients, format=None, meta_buffer=0, meta_size=(2, 2))
x.__init__(...) initializes x; see x.__class__.__doc__ for signature source code

_has_transparent_sources(self)

source code

id(self)
Returns a unique but constant id of this TileSource used for locking.

source code

lock_filename(self, tile)
Returns a lock for one fixed tile per metatile.

source code

list of Tiles

create_tile(self, tile, tile_map)
Retrieve the metatile that contains the requested tile and save all tiles. source code

_get_meta_tile(self, tile)

source code

_split_meta_tile(self, meta_tile, tiles, tile_map)

source code

__repr__(self)
repr(x)

source code

Inherited from core.cache.TileSource: tile_lock

Inherited from object: __delattr__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __str__

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self, grid, clients, format=None, meta_buffer=0, meta_size=`(`2`,` 2`)`)
(Constructor)

source code

x.__init__(...) initializes x; see x.__class__.__doc__ for signature

Parameters:

grid - the associated grid
clients ([mapproxy.wms.client.WMSClient,...]) - WMSClient for each distinct WMS source
format - internal image format, if not set use format from first WMS client
meta_size ((x_size, y_size)) - the number of tiles to get per request
meta_buffer (pixel) - the buffer size in pixel that is added to each grid. the number is added to all four borders. this buffer may improve the handling of labels overlapping (meta)tile borders.

Overrides: object.__init__