QGIS API Documentation  2.18.3-Las Palmas (77b8c3d)
Signals | Public Member Functions | List of all members
QgsFocusWatcher Class Reference

A event filter for watching for focus events on a parent object. More...

#include <qgsfocuswatcher.h>

Inheritance diagram for QgsFocusWatcher:
Inheritance graph
[legend]

Signals

void focusChanged (bool focused)
 Emitted when parent object's focus changes. More...
 
void focusIn ()
 Emitted when parent object gains focus. More...
 
void focusOut ()
 Emitted when parent object loses focus. More...
 

Public Member Functions

 QgsFocusWatcher (QObject *parent)
 Constructor for QgsFocusWatcher. More...
 
virtual bool eventFilter (QObject *obj, QEvent *event) override
 
- Public Member Functions inherited from QObject
 QObject (QObject *parent)
 
 QObject (QObject *parent, const char *name)
 
virtual  ~QObject ()
 
bool blockSignals (bool block)
 
QObjectchild (const char *objName, const char *inheritsClass, bool recursiveSearch) const
 
const QObjectList & children () const
 
const char * className () const
 
bool connect (const QObject *sender, const char *signal, const char *method, Qt::ConnectionType type) const
 
void deleteLater ()
 
void destroyed (QObject *obj)
 
bool disconnect (const QObject *receiver, const char *method)
 
bool disconnect (const char *signal, const QObject *receiver, const char *method)
 
void dumpObjectInfo ()
 
void dumpObjectTree ()
 
QList< QByteArraydynamicPropertyNames () const
 
virtual bool event (QEvent *e)
 
findChild (const QString &name) const
 
QList< T > findChildren (const QRegExp &regExp) const
 
QList< T > findChildren (const QString &name) const
 
bool inherits (const char *className) const
 
void insertChild (QObject *object)
 
void installEventFilter (QObject *filterObj)
 
bool isA (const char *className) const
 
bool isWidgetType () const
 
void killTimer (int id)
 
virtual const QMetaObjectmetaObject () const
 
void moveToThread (QThread *targetThread)
 
const char * name () const
 
const char * name (const char *defaultName) const
 
QString objectName () const
 
QObjectparent () const
 
QVariant property (const char *name) const
 
void removeChild (QObject *object)
 
void removeEventFilter (QObject *obj)
 
void setName (const char *name)
 
void setObjectName (const QString &name)
 
void setParent (QObject *parent)
 
bool setProperty (const char *name, const QVariant &value)
 
bool signalsBlocked () const
 
int startTimer (int interval)
 
QThreadthread () const
 

Additional Inherited Members

- Static Public Member Functions inherited from QObject
bool connect (const QObject *sender, const char *signal, const QObject *receiver, const char *method, Qt::ConnectionType type)
 
bool connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type)
 
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)
 
QString tr (const char *sourceText, const char *disambiguation, int n)
 
QString trUtf8 (const char *sourceText, const char *disambiguation, int n)
 
- Protected Member Functions inherited from QObject
bool checkConnectArgs (const char *signal, const QObject *object, const char *method)
 
virtual void childEvent (QChildEvent *event)
 
virtual void connectNotify (const char *signal)
 
virtual void customEvent (QEvent *event)
 
virtual void disconnectNotify (const char *signal)
 
int receivers (const char *signal) const
 
QObjectsender () const
 
int senderSignalIndex () const
 
virtual void timerEvent (QTimerEvent *event)
 
- Static Protected Member Functions inherited from QObject
QByteArray normalizeSignalSlot (const char *signalSlot)
 
- Properties inherited from QObject
 objectName
 

Detailed Description

A event filter for watching for focus events on a parent object.

Usually QObjects must subclass and override methods like focusOutEvent to handle focus events. Using this class as an event filter avoids the need to subclass objects and the focus events can be directly caught using the emitted signals.

Note
added in 2.16

Definition at line 30 of file qgsfocuswatcher.h.

Constructor & Destructor Documentation

QgsFocusWatcher::QgsFocusWatcher ( QObject parent)
explicit

Constructor for QgsFocusWatcher.

Parameters
parentparent widget to catch focus events for. This class will automatically be installed as an event filter for parent.

Definition at line 19 of file qgsfocuswatcher.cpp.

Member Function Documentation

bool QgsFocusWatcher::eventFilter ( QObject obj,
QEvent event 
)
overridevirtual

Reimplemented from QObject.

Definition at line 26 of file qgsfocuswatcher.cpp.

void QgsFocusWatcher::focusChanged ( bool  focused)
signal

Emitted when parent object's focus changes.

Parameters
focusedtrue if object gained focus, false if object lost focus
void QgsFocusWatcher::focusIn ( )
signal

Emitted when parent object gains focus.

void QgsFocusWatcher::focusOut ( )
signal

Emitted when parent object loses focus.


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