OutputOrderWatcher Class Reference

#include <outputorderwatcher.h>

Inheritance diagram for OutputOrderWatcher:

Signals
void	outputOrderChanged (const QStringList &outputOrder)

Public Member Functions
QStringList	outputOrder () const
virtual void	refresh ()
Public Member Functions inherited from QObject
	QObject (QObject *parent)
QBindable< QString >	bindableObjectName ()
bool	blockSignals (bool block)
const QObjectList &	children () const const
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type) const const
void	deleteLater ()
void	destroyed (QObject *obj)
bool	disconnect (const char *signal, const QObject *receiver, const char *method) const const
bool	disconnect (const QObject *receiver, const char *method) const const
void	dumpObjectInfo () const const
void	dumpObjectTree () const const
QList< QByteArray >	dynamicPropertyNames () const const
virtual bool	event (QEvent *e)
virtual bool	eventFilter (QObject *watched, QEvent *event)
T	findChild (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const
QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const
QList< T >	findChildren (Qt::FindChildOptions options) const const
bool	inherits (const char *className) const const
void	installEventFilter (QObject *filterObj)
bool	isQuickItemType () const const
bool	isWidgetType () const const
bool	isWindowType () const const
void	killTimer (int id)
virtual const QMetaObject *	metaObject () const const
void	moveToThread (QThread *targetThread)
QString	objectName () const const
void	objectNameChanged (const QString &objectName)
QObject *	parent () const const
QVariant	property (const char *name) const const
	Q_CLASSINFO (Name, Value)
	Q_EMIT Q_EMIT
	Q_ENUM (...)
	Q_ENUM_NS (...)
	Q_ENUMS (...)
	Q_FLAG (...)
	Q_FLAG_NS (...)
	Q_FLAGS (...)
	Q_GADGET Q_GADGET
	Q_GADGET_EXPORT (EXPORT_MACRO)
	Q_INTERFACES (...)
	Q_INVOKABLE Q_INVOKABLE
	Q_MOC_INCLUDE Q_MOC_INCLUDE
	Q_NAMESPACE Q_NAMESPACE
	Q_NAMESPACE_EXPORT (EXPORT_MACRO)
	Q_OBJECT Q_OBJECT
	Q_PROPERTY (...)
	Q_REVISION Q_REVISION
	Q_SET_OBJECT_NAME (Object)
	Q_SIGNAL Q_SIGNAL
	Q_SIGNALS Q_SIGNALS
	Q_SLOT Q_SLOT
	Q_SLOTS Q_SLOTS
T	qobject_cast (const QObject *object)
T	qobject_cast (QObject *object)
	QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT
void	removeEventFilter (QObject *obj)
void	setObjectName (const QString &name)
void	setObjectName (QAnyStringView name)
void	setParent (QObject *parent)
bool	setProperty (const char *name, const QVariant &value)
bool	setProperty (const char *name, QVariant &&value)
bool	signalsBlocked () const const
int	startTimer (int interval, Qt::TimerType timerType)
int	startTimer (std::chrono::milliseconds interval, Qt::TimerType timerType)
QThread *	thread () const const

Static Public Member Functions
static OutputOrderWatcher *	instance (QObject *parent)
Static Public Member Functions inherited from QObject
QMetaObject::Connection	connect (const QObject *sender, const char *signal, const QObject *receiver, const char *method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, const QObject *context, Functor functor, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method, Qt::ConnectionType type)
QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)
bool	disconnect (const QMetaObject::Connection &connection)
bool	disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *method)
bool	disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method)
bool	disconnect (const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method)
QString	tr (const char *sourceText, const char *disambiguation, int n)

Protected Member Functions
	OutputOrderWatcher (QObject *parent)
void	useFallback (bool fallback)
Protected Member Functions inherited from QObject
virtual void	childEvent (QChildEvent *event)
virtual void	connectNotify (const QMetaMethod &signal)
virtual void	customEvent (QEvent *event)
virtual void	disconnectNotify (const QMetaMethod &signal)
bool	isSignalConnected (const QMetaMethod &signal) const const
int	receivers (const char *signal) const const
QObject *	sender () const const
int	senderSignalIndex () const const
virtual void	timerEvent (QTimerEvent *event)

Protected Attributes
bool	m_orderProtocolPresent = false
QStringList	m_outputOrder

Additional Inherited Members
Public Types inherited from QObject
typedef	QObjectList
Properties inherited from QObject
	objectName

Detailed Description

This class watches for output ordering changes from the relevant backend.

Definition at line 27 of file outputorderwatcher.h.

Constructor & Destructor Documentation

OutputOrderWatcher()

OutputOrderWatcher::OutputOrderWatcher ( QObject * parent )

protected

Definition at line 70 of file outputorderwatcher.cpp.

Member Function Documentation

instance()

OutputOrderWatcher * OutputOrderWatcher::instance ( QObject * parent )

static

Create the correct OutputOrderWatcher.

Definition at line 86 of file outputorderwatcher.cpp.

outputOrder()

QStringList OutputOrderWatcher::outputOrder

(

)

const

Returns the list of outputs in order.

At the time of change signalling all Screens are guaranteed to exist in QGuiApplication.

After screen removal this can temporarily contain dead entries.

Definition at line 129 of file outputorderwatcher.cpp.

refresh()

void OutputOrderWatcher::refresh ( )

virtual

For X11 we know libkscreen takes a server grab whilst changing properties. This means we know at the time of any runtime screen addition and removal the priorities will be up-to-date when we poll them.

For dynamic ordering changes without screen changes we will get the change property multiple times. A timer is used to batch them.

A caveat on X11 is the initial startup where plasmashell may query screen information before kscreen has set properties. This should resolve itself as a dynamic re-ordering when kscreen does start.

For wayland we know kwin sends the priority order whenever screen changes are made. As creating screens requires an extra async call to kwin (to bind to the output) we always get the new priority ordering before and screen additions. We should always have correct values on startup.

Definition at line 100 of file outputorderwatcher.cpp.

useFallback()

void OutputOrderWatcher::useFallback ( bool fallback )

protected

Backend failed, use QScreen based implementaion.

Definition at line 77 of file outputorderwatcher.cpp.

Member Data Documentation

m_orderProtocolPresent

bool OutputOrderWatcher::m_orderProtocolPresent = false

protected

Definition at line 77 of file outputorderwatcher.h.

m_outputOrder

QStringList OutputOrderWatcher::m_outputOrder

protected

Definition at line 76 of file outputorderwatcher.h.

---

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

• outputorderwatcher.h
• outputorderwatcher.cpp