QmitkNavigationDataPlayerControlWidget.cpp

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/*============================================================================
 
The Medical Imaging Interaction Toolkit (MITK)
 
Copyright (c) German Cancer Research Center (DKFZ)
All rights reserved.
 
Use of this source code is governed by a 3-clause BSD license that can be
found in the LICENSE file.
 
============================================================================*/
 
#include "QmitkNavigationDataPlayerControlWidget.h"
#include "ui_QmitkNavigationDataPlayerControlWidget.h"
 
#include <QTimer>
 
QmitkNavigationDataPlayerControlWidget::QmitkNavigationDataPlayerControlWidget(QWidget *parent) :
  QWidget(parent),
  m_UpdateTimer(new QTimer(this)),
  ui(new Ui::QmitkNavigationDataPlayerControlWidget)
{
  ui->setupUi(this);
 
  connect(m_UpdateTimer, SIGNAL(timeout()), this, SLOT(OnUpdate()));
}
 
QmitkNavigationDataPlayerControlWidget::~QmitkNavigationDataPlayerControlWidget()
{
  delete ui;
}
 
void QmitkNavigationDataPlayerControlWidget::SetPlayer(mitk::NavigationDataPlayer::Pointer player)
{
  m_Player = player;
 
  ui->samplePositionHorizontalSlider->setMaximum(player->GetNumberOfSnapshots()-1);
}
 
void QmitkNavigationDataPlayerControlWidget::OnStop()
{
  m_UpdateTimer->stop();
  m_Player->StopPlaying();
 
  ui->playPushButton->setChecked(false);
 
  this->ResetPlayerDisplay();
}
 
void QmitkNavigationDataPlayerControlWidget::OnPlayPause()
{
  switch ( m_Player->GetCurrentPlayerState() )
  {
  case mitk::NavigationDataPlayer::PlayerStopped:
  {
    m_Player->StartPlaying();
    if ( ! m_UpdateTimer->isActive() ) { m_UpdateTimer->start(10); }
    if ( ! ui->playPushButton->isChecked() ) { ui->playPushButton->setChecked(true); }
    break;
  }
  case mitk::NavigationDataPlayer::PlayerPaused:
  {
    m_Player->Resume();
    break;
  }
  case mitk::NavigationDataPlayer::PlayerRunning:
  {
    m_Player->Pause();
    break;
  }
  }
}
 
void QmitkNavigationDataPlayerControlWidget::OnRestart()
{
  this->OnStop();
  this->OnPlayPause();
}
 
void QmitkNavigationDataPlayerControlWidget::OnUpdate()
{
  m_Player->Update();
 
  int msc = static_cast<int>(m_Player->GetTimeStampSinceStart());
 
  // calculation for playing time display
  int ms = msc % 1000;
  msc = (msc - ms) / 1000;
  int s = msc % 60;
  int min = (msc-s) / 60;
 
  // set lcd numbers
  ui->msecLCDNumber->display(ms);
  ui->secLCDNumber->display(s);
  ui->minLCDNumber->display(min);
 
  ui->samplePositionHorizontalSlider->setValue(static_cast<int>(m_Player->GetCurrentSnapshotNumber()));
 
  emit SignalUpdate();
 
  if ( m_Player->GetCurrentPlayerState() == mitk::NavigationDataPlayer::PlayerStopped )
  {
    m_UpdateTimer->stop();
    ui->playPushButton->setChecked(false);
 
    emit SignalEndReached();
  }
}
 
void QmitkNavigationDataPlayerControlWidget::ResetPlayerDisplay()
{
  // set lcd numbers
  ui->msecLCDNumber->display(0);
  ui->secLCDNumber->display(0);
  ui->minLCDNumber->display(0);
 
  ui->samplePositionHorizontalSlider->setValue(0);
}