File indexing completed on 2024-05-19 16:51:55

 /*
     Copyright (C) 2014 by Elvis Angelaccio <elvis.angelaccio@kde.org>
 
     This file is part of Kronometer.
 
     Kronometer 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.
 
     Kronometer 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 Kronometer.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "stopwatch.h"
 
 #include <QCoreApplication>
 #include <QTimerEvent>
 
 Stopwatch::Stopwatch(QObject *parent) : QObject(parent) {}
 
 void Stopwatch::setGranularity(Granularity g)
 {
     m_granularity = g;
 
     // whenever granularity is changed, also apply that granularity to the timer event
     if (m_timerId != INACTIVE_TIMER_ID) {
         killTimer(m_timerId);
         m_timerId = startTimer(granularity());
     }
 }
 
 bool Stopwatch::isRunning() const
 {
     return m_state == State::Running;
 }
 
 bool Stopwatch::isPaused() const
 {
     return m_state == State::Paused;
 }
 
 bool Stopwatch::isInactive() const
 {
     return m_state == State::Inactive;
 }
 
 int Stopwatch::raw() const
 {
     return m_accumulator;
 }
 
 bool Stopwatch::initialize(int rawData)
 {
     if (not isInactive() or rawData <= 0) {
         return false;
     }
 
     m_accumulator = rawData;
     m_state = State::Paused;
     emit time(m_accumulator);  // it signals that has been deserialized and can be resumed
 
     return true;
 }
 
 void Stopwatch::start()
 {
     if (isInactive()) {
         m_accumulator = 0;
         m_elapsedTimer.start();
 
         if (m_timerId == INACTIVE_TIMER_ID) {
             m_timerId = startTimer(granularity());
         }
     }
     else if (isPaused()) {
         m_elapsedTimer.restart();
         m_timerId = startTimer(granularity());
     }
 
     m_state = State::Running;
     emit running();
 }
 
 void Stopwatch::pause()
 {
     if (m_elapsedTimer.isValid()) {
         m_accumulator += m_elapsedTimer.elapsed();
     }
 
     m_elapsedTimer.invalidate();
     m_state = State::Paused;
     emit paused();
 }
 
 void Stopwatch::reset()
 {
     m_elapsedTimer.invalidate();          // if state is running, it will emit a zero time at next timerEvent() call
     QCoreApplication::processEvents();
     emit time(0);
     m_state = State::Inactive;
     emit inactive();
 }
 
 void Stopwatch::storeLap()
 {
     auto lapTime = m_accumulator;
 
     if (m_elapsedTimer.isValid()) {
         lapTime += m_elapsedTimer.elapsed();
     }
 
     const auto zero = QTime {0, 0};
     emit lap(zero.addMSecs(lapTime));
 }
 
 void Stopwatch::timerEvent(QTimerEvent *event)
 {
     if (event->timerId() != m_timerId) {      // forward undesired events
         QObject::timerEvent(event);
         return;
     }
 
     if (m_elapsedTimer.isValid()) {
         emit time(m_accumulator + m_elapsedTimer.elapsed());
     }
     else {
         killTimer(m_timerId);
         m_timerId = INACTIVE_TIMER_ID;
     }
 }
 
 int Stopwatch::granularity() const
 {
     return static_cast<int>(m_granularity);
 }