keepassxc

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/*
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 *  Copyright (C) 2014 Felix Geyer <debfx@fobos.de>
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 *
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 *  This program is free software: you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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 *  the Free Software Foundation, either version 2 or (at your option)
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 *  version 3 of the License.
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 *
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 *  This program is distributed in the hope that it will be useful,
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *  GNU General Public License for more details.
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 *
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 *  You should have received a copy of the GNU General Public License
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 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
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 */
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#include "InactivityTimer.h"
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#include <QCoreApplication>
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#include <QTimer>
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InactivityTimer::InactivityTimer(QObject* parent)
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    : QObject(parent)
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    , m_timer(new QTimer(this))
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    , m_active(false)
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{
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    m_timer->setSingleShot(true);
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    connect(m_timer, SIGNAL(timeout()), SLOT(timeout()));
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}
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void InactivityTimer::setInactivityTimeout(int inactivityTimeout)
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{
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    Q_ASSERT(inactivityTimeout > 0);
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    m_timer->setInterval(inactivityTimeout);
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}
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void InactivityTimer::activate()
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{
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    if (!m_active) {
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        qApp->installEventFilter(this);
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    }
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    m_active = true;
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    m_timer->start();
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}
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void InactivityTimer::deactivate()
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{
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    qApp->removeEventFilter(this);
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    m_active = false;
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    m_timer->stop();
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}
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bool InactivityTimer::eventFilter(QObject* watched, QEvent* event)
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{
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    const QEvent::Type type = event->type();
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    // clang-format off
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    if ((type >= QEvent::MouseButtonPress && type <= QEvent::KeyRelease)
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        || (type >= QEvent::HoverEnter && type <= QEvent::HoverMove)
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        || (type == QEvent::Wheel)) {
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        m_timer->start();
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    }
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    // clang-format on
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    return QObject::eventFilter(watched, event);
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}
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void InactivityTimer::timeout()
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{
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    // make sure we don't emit the signal a second time while it's still processed
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    if (!m_emitMutx.tryLock()) {
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        return;
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    }
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    if (m_active && !m_timer->isActive()) {
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        emit inactivityDetected();
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    }
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    m_emitMutx.unlock();
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}
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