Module inspect 

The frame as a list a tool can read back: every node the last finished frame laid out, with what it is, where layout put it, and the handful of declarations that explain the rest. What a devtools tree view and node inspector are built from.

Off unless asked: a view runs every frame and the copy is O(nodes), so a shipped app pays nothing. Core::set_inspect(true) turns the snapshot on, and it is taken at the end of every finished frame from then on — the tree itself is rebuilt from scratch next frame, so this is the only reading of a frame that outlives it.

Structs

NodeInfo

One node of the last finished frame.

Enums

NodeKind

What kind of node a snapshot row is.