PhosphorSnapEngine::INavigationStateProvider Class Reference

Narrow read-only interface for compositor-layer state queries. More...

#include <phosphor-snap-engine/include/PhosphorSnapEngine/INavigationStateProvider.h>

Public Member Functions
	INavigationStateProvider ()=default
virtual	~INavigationStateProvider ()
virtual QString	lastCursorScreenName () const =0
	Screen that most recently contained the mouse cursor.
virtual QString	lastActiveScreenName () const =0
	Screen that most recently held the active (focused) window.
virtual QString	lastActiveWindowId () const =0
	Window ID that most recently received keyboard focus.
virtual QRect	frameGeometry (const QString &windowId) const =0
	Live frame geometry for windowId as reported by the compositor.
	INavigationStateProvider (const INavigationStateProvider &)=delete
INavigationStateProvider &	operator= (const INavigationStateProvider &)=delete

Detailed Description

Narrow read-only interface for compositor-layer state queries.

SnapEngine's navigation entry points need three string shadows (last-active window, last-active screen, last-cursor screen) and one frame-geometry accessor that live on the daemon's WindowTrackingAdaptor. Rather than holding an opaque QObject* and calling methods by string via QMetaObject::invokeMethod, the engine now depends on this typed interface.

The daemon's WindowTrackingAdaptor must implement (or wrap) INavigationStateProvider so that setNavigationStateProvider() can accept a typed pointer. The interface is intentionally minimal — if a future navigation method needs additional adaptor state, add a virtual here rather than reaching back into a QObject*.

Not a QObject — pure data queries with no lifecycle signals.

Constructor & Destructor Documentation

INavigationStateProvider() [1/2]

PhosphorSnapEngine::INavigationStateProvider::INavigationStateProvider ( )

default

~INavigationStateProvider()

virtual PhosphorSnapEngine::INavigationStateProvider::~INavigationStateProvider ( )

virtual

INavigationStateProvider() [2/2]

PhosphorSnapEngine::INavigationStateProvider::INavigationStateProvider ( const INavigationStateProvider &  )

delete

Member Function Documentation

frameGeometry()

virtual QRect PhosphorSnapEngine::INavigationStateProvider::frameGeometry ( const QString &  windowId ) const

pure virtual

Live frame geometry for windowId as reported by the compositor.

Returns an invalid QRect when the window is unknown.

lastActiveScreenName()

virtual QString PhosphorSnapEngine::INavigationStateProvider::lastActiveScreenName ( ) const

pure virtual

Screen that most recently held the active (focused) window.

lastActiveWindowId()

virtual QString PhosphorSnapEngine::INavigationStateProvider::lastActiveWindowId ( ) const

pure virtual

Window ID that most recently received keyboard focus.

lastCursorScreenName()

virtual QString PhosphorSnapEngine::INavigationStateProvider::lastCursorScreenName ( ) const

pure virtual

Screen that most recently contained the mouse cursor.

operator=()

INavigationStateProvider & PhosphorSnapEngine::INavigationStateProvider::operator= ( const INavigationStateProvider &  )

delete

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The documentation for this class was generated from the following file:

• phosphor-snap-engine/include/PhosphorSnapEngine/INavigationStateProvider.h