Module cache 

A cache for storing the results of layout computation

Structs

Cache

A cache for caching the results of a sizing a Grid Item or Flexbox Item

CacheEntry 🔒

Cached intermediate layout results

CacheKey 🔒

Space-optimised cache key that packs bits into as small a size as possible

CacheMode 🔒

The layout inputs that affect a node’s layout but are not part of the CacheKey: the SizingMode and whether each of the node’s vertical margins is collapsible, packed into a u8.

Enums

ClearState

Clear operation outcome. See Cache::clear

Constants

BOTH_SIGN_BITS_MASK 🔒

Mask of both sign bits (used to compute NON_SIGN_BITS_MASK)

CACHE_SIZE 🔒

The number of cache entries for each node in the tree

INFINITY_BITS 🔒

f32::INFINITY as a u32

MODE_CHANGE_EVICTIONS 🔒

See [cache_mode_change_evictions]

NEG_INFINITY_BITS 🔒

f32::NEG_INFINITY as a u32

NON_SIGN_BITS_MASK 🔒

Mask of excluding the sign bits (used when setting/getting the size excluding the packed bits)

SIGN_BIT_1 🔒

The sign bit of the first f32

SIGN_BIT_2 🔒

The sign bit of the second f32

X_AXIS_VALUE_MASK 🔒

Mask which includes only the bits which encode the x-axis value that we can use to ignore the y-axis value when comparing a cache key.

Functions

available_space_cache_key 🔒

Pack AvailableSpace into u32

mixed_cache_key 🔒

Encodes combination of a known_dimension (Option) and AvailableSpace in a single dimension into a cache key in a single dimension.

option_cache_key 🔒

Pack Option<f32> into u32

size_available_space_cache_key 🔒

Pack Size<AvailableSpace> into u64

size_mixed_cache_key 🔒

Encodes combination of a known_dimension (Option) and AvailableSpace in two dimensions into a cache key in a single dimension.

size_option_cache_key 🔒

Pack Size<Option<f32>> into u64