torcnetworkbuttoninput.cpp

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/* Class TorcNetworkButtonInput
*
* This file is part of the Torc project.
*
* Copyright (C) Mark Kendall 2016-18
*
* 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.
*/

// Torc
#include "torcnetworkbuttoninput.h"

TorcNetworkButtonInput::TorcNetworkButtonInput(double Default, const QVariantMap &Details)
  : TorcNetworkSwitchInput(Default, Details),
    m_pulseTimer()
{
    // timers cannot be started from other threads, so use some signalling
    connect(this, &TorcNetworkButtonInput::Pushed, this, &TorcNetworkButtonInput::StartTimer);

    // setup the timer
    m_pulseTimer.setSingleShot(true);
    m_pulseTimer.setInterval(5);
    connect(&m_pulseTimer, &QTimer::timeout, this, &TorcNetworkButtonInput::EndPulse);
}

QStringList TorcNetworkButtonInput::GetDescription(void)
{
    return QStringList() << tr("Network button");
}

void TorcNetworkButtonInput::Start(void)
{
    SetValid(true);
    SetValue(defaultValue);
    TorcNetworkSwitchInput::Start();
}

TorcInput::Type TorcNetworkButtonInput::GetType()
{
    return TorcInput::Button;
}

void TorcNetworkButtonInput::SetValue(double Value)
{
    (void)Value;
    QMutexLocker locker(&lock);

    // don't re-trigger until current pulse is finished
    if (m_pulseTimer.isActive())
        return;

    // only trigger on a 'push' - not release
    if (qFuzzyCompare(Value + 1.0, 1.0))
        return;

    TorcNetworkSwitchInput::SetValue(value < 1.0 ? 1.0 : 0.0);
    emit Pushed();
}

void TorcNetworkButtonInput::StartTimer(void)
{
    if (!m_pulseTimer.isActive())
        m_pulseTimer.start();
}

void TorcNetworkButtonInput::EndPulse(void)
{
    QMutexLocker locker(&lock);

    TorcSwitchInput::SetValue(value < 1.0 ? 1.0 : 0.0);
}