The cache module¶

Cache logic.

class ImageEntry(image)[source]¶: Bases: object

class ImageCache[source]¶

Bases: object

Cache generated images.

Store and retrieve them under a key (see render.Renderer.key()).

maxsize = 209715200¶

currentsize = 0¶

clear()[source]¶: Remove all cached images.

invalidate(page)[source]¶: Clear cache contents for the specified page.

tileset(key)[source]¶

Return a dictionary with tile-entry pairs for the key.

If no single tile is available, an empty dict is returned.

addtile(key, tile, image)[source]¶: Add image for the specified key and tile.

closest(key)[source]¶

Iterate over suitable image tilesets but with a different size.

Yields (width, height, tileset) tuples.

This can be used for interim display while the real image is being rendered.