QGIS API Documentation 3.29.0-Master (8c80f25a4f)
qgsfocuskeeper.cpp
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1/***************************************************************************
2 qgsfocuskeeper.cpp
3 -----------------
4 Date : May 2020
5 Copyright : (C) 2020 Even Rouault
6 Email : even dot rouault at spatialys 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 "qgsfocuskeeper.h"
17
18#include <QApplication>
19#include <QEvent>
20#include <QWidget>
21
22QgsFocusKeeper::QgsFocusKeeper(): mWidgetToKeepFocused( QApplication::focusWidget() )
23{
24 if ( mWidgetToKeepFocused )
25 mWidgetToKeepFocused->installEventFilter( this );
26}
27
29{
30 if ( mWidgetToKeepFocused )
31 mWidgetToKeepFocused->removeEventFilter( this );
32}
33
34bool QgsFocusKeeper::eventFilter( QObject *obj, QEvent *event )
35{
36 if ( obj == mWidgetToKeepFocused && event &&
37 ( event->type() == QEvent::FocusOut || event->type() == QEvent::FocusAboutToChange ) )
38 {
39 return true;
40 }
41 return QObject::eventFilter( obj, event );
42}
~QgsFocusKeeper() override
bool eventFilter(QObject *obj, QEvent *event) override