File indexing completed on 2024-05-05 05:35:25

 //////////////////////////////////////////////////////////////////////////////
 // oxygenmnemonics.cpp
 // enable/disable mnemonics display
 // -------------------
 //
 // SPDX-FileCopyrightText: 2011 Hugo Pereira Da Costa <hugo.pereira@free.fr>
 //
 // SPDX-License-Identifier: LGPL-2.0-only
 //////////////////////////////////////////////////////////////////////////////
 
 #include "oxygenmnemonics.h"
 
 #include <QKeyEvent>
 #include <QWidget>
 
 namespace Oxygen
 {
 //____________________________________________________
 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;
 
     case QEvent::ApplicationStateChange: {
         setEnabled(false);
     } break;
 
     default:
         break;
     }
 
     return false;
 }
 
 //____________________________________________________
 void Mnemonics::setEnabled(bool value)
 {
     if (_enabled == value)
         return;
 
     _enabled = value;
 
     // update all top level widgets
     const auto topWidgets = qApp->topLevelWidgets();
     for (QWidget *widget : topWidgets) {
         widget->update();
     }
 }
 }