MemoryTileCache class
This is a memory-only implementation of the TileCache. It stores the bitmaps in memory.
We use a factory and remember all active instances. This way we can easily purge caches if needed.
Constructors
- MemoryTileCache.create()
-
factory
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
dispose(
) → void - disposes the cache. It should not be used anymore after disposing.
-
get(
Tile tile) → TilePicture? - Returns the requested picture or null if the picture is not available.
-
getOrProduce(
Tile tile, Future< TilePicture?> producer(Tile)) → Future<TilePicture?> - todo it may make sense to return a clone and dispose that clone at the consumer. The cache may evict an image at any time even if it is still used by the consumer.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
purgeAll(
) → void - Purges the whole cache. The cache can be used afterwards but will not return any items
-
purgeByBoundary(
BoundingBox boundingBox) → void -
Purges the cache whose
Tiles intersects with the givenboundingBox. Any bitmap which is fully or partially intersecting the givenboundingBoxwill be purged. -
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
purgeAllCaches(
) → void -
purgeCachesByBoundary(
BoundingBox boundingBox) → void