PhosphorSnapEngine Namespace Reference

Classes
class	INavigationStateProvider
	Narrow read-only interface for compositor-layer state queries. More...
class	IZoneAdjacencyResolver
	Narrow interface for zone-adjacency queries used by snap navigation. More...
struct	PlacementDirective
	What a matched open-placement rule directs for an opening window. More...
class	SnapEngine
	Engine for manual zone-based window snapping. More...
class	SnapNavigationTargetResolver
	Pure snap-mode navigation target resolver. More...
class	SnapState
	Per-screen snap placement state. More...
struct	SpanTargetResult
	Result of a span (grow/shrink) target computation. More...

Functions
PHOSPHORSNAPENGINE_EXPORT bool	isStoredScreenValid (PhosphorScreens::ScreenManager *mgr, const QString &storedScreen)
	True when storedScreen still resolves on the live screen set: a physical id must be connected; a virtual id additionally needs its backing physical output present AND continued membership in mgr's effective screen list (guards against stale ids after a config removal).
QString	oppositeCrossingDirection (const QString &direction)
	The edge a neighbour surface is entered from when crossing in direction: crossing "right" lands on the neighbour's LEFT edge, "down" on its TOP, etc.

Function Documentation

isStoredScreenValid()

PHOSPHORSNAPENGINE_EXPORT bool PhosphorSnapEngine::isStoredScreenValid	(	PhosphorScreens::ScreenManager *	mgr,
		const QString &	storedScreen
	)

True when storedScreen still resolves on the live screen set: a physical id must be connected; a virtual id additionally needs its backing physical output present AND continued membership in mgr's effective screen list (guards against stale ids after a config removal).

Shared by the resolver's stored-screen preference and SnapEngine's resolveNavScreen so the validation rule lives in one place.

oppositeCrossingDirection()

QString PhosphorSnapEngine::oppositeCrossingDirection ( const QString &  direction )

inline

The edge a neighbour surface is entered from when crossing in direction: crossing "right" lands on the neighbour's LEFT edge, "down" on its TOP, etc.

Empty for an unknown token. Shared by the resolver's cross-output entry/swap targets and SnapEngine::entryZoneForCrossing so the mapping lives in one place.