/*************************************************************************
* Copyright (C) 2014 by Hugo Pereira Da Costa <hugo.pereira@free.fr> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA . *
*************************************************************************/
#include "adwaitamnemonics.h"
#include <QKeyEvent>
#include <QWidget>
namespace Adwaita
{
//____________________________________________________
void Mnemonics::setMode( int mode )
{
switch( mode )
{
case StyleConfigData::MN_NEVER:
qApp->removeEventFilter( this );
setEnabled( false );
break;
default:
case StyleConfigData::MN_ALWAYS:
qApp->removeEventFilter( this );
setEnabled( true );
break;
case StyleConfigData::MN_AUTO:
qApp->removeEventFilter( this );
qApp->installEventFilter( this );
setEnabled( false );
break;
}
return;
}
//____________________________________________________
bool Mnemonics::eventFilter( QObject*, QEvent* event )
{
switch( event->type() )
{
case QEvent::KeyPress:
if( static_cast<QKeyEvent*>(event)->key() == Qt::Key_Alt )
{ setEnabled( true ); }
break;
case QEvent::KeyRelease:
if( static_cast<QKeyEvent*>(event)->key() == Qt::Key_Alt )
{ setEnabled( false ); }
break;
#if QT_VERSION >= 0x050000
case QEvent::ApplicationStateChange:
{ setEnabled( false ); }
break;
#endif
default: break;
}
return false;
}
//____________________________________________________
void Mnemonics::setEnabled( bool value )
{
if( _enabled == value ) return;
_enabled = value;
// update all top level widgets
foreach( QWidget* widget, qApp->topLevelWidgets() )
{ widget->update(); }
}
}