QGIS API Documentation 3.29.0-Master (8c80f25a4f)
qgsfocuswatcher.cpp
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1/***************************************************************************
2 qgsfocuswatcher.h
3 -----------------
4 Date : April 2016
5 Copyright : (C) 2016 by Nyall Dawson
6 Email : nyall dot dawson at gmail dot com
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15
16#include "qgsfocuswatcher.h"
17#include <QEvent>
18
20 : QObject( parent )
21{
22 Q_ASSERT( parent );
23 parent->installEventFilter( this );
24}
25
26bool QgsFocusWatcher::eventFilter( QObject *, QEvent *event )
27{
28 switch ( event->type() )
29 {
30 case QEvent::FocusIn:
31 emit focusChanged( true );
32 emit focusIn();
33 break;
34 case QEvent::FocusOut:
35 emit focusChanged( false );
36 emit focusOut();
37 break;
38 default:
39 break;
40 }
41 return false;
42}
void focusIn()
Emitted when parent object gains focus.
void focusChanged(bool focused)
Emitted when parent object's focus changes.
void focusOut()
Emitted when parent object loses focus.
bool eventFilter(QObject *obj, QEvent *event) override
QgsFocusWatcher(QObject *parent)
Constructor for QgsFocusWatcher.