QmitkProgressBar.cpp

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/*===================================================================

The Medical Imaging Interaction Toolkit (MITK)

Copyright (c) German Cancer Research Center,
Division of Medical and Biological Informatics.
All rights reserved.

This software is distributed WITHOUT ANY WARRANTY; without
even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE.

See LICENSE.txt or http://www.mitk.org for details.

===================================================================*/

#include "QmitkProgressBar.h"

#include "mitkProgressBar.h"
#include "mitkRenderingManager.h"

#include <qapplication.h>
#include <qprogressbar.h>

void QmitkProgressBar::Reset()
{
  this->reset();
  this->hide();
  m_TotalSteps = 0;
  m_Progress = 0;
}

void QmitkProgressBar::SetPercentageVisible(bool visible)
{
  emit SignalSetPercentageVisible(visible);
}

void QmitkProgressBar::AddStepsToDo(unsigned int steps)
{
  emit SignalAddStepsToDo(steps);
}

void QmitkProgressBar::Progress(unsigned int steps)
{
  emit SignalProgress(steps);
}

QmitkProgressBar::QmitkProgressBar(QWidget *parent, const char * /*name*/)
  : QProgressBar(parent), ProgressBarImplementation()
{
  m_TotalSteps = 0;
  m_Progress = 0;
  this->hide();
  this->SetPercentageVisible(true);

  connect(this, SIGNAL(SignalAddStepsToDo(unsigned int)), this, SLOT(SlotAddStepsToDo(unsigned int)));
  connect(this, SIGNAL(SignalProgress(unsigned int)), this, SLOT(SlotProgress(unsigned int)));
  connect(this, SIGNAL(SignalSetPercentageVisible(bool)), this, SLOT(SlotSetPercentageVisible(bool)));

  mitk::ProgressBar::GetInstance()->RegisterImplementationInstance(this);
}

QmitkProgressBar::~QmitkProgressBar()
{
  mitk::ProgressBar::GetInstance()->UnregisterImplementationInstance(this);
}

void QmitkProgressBar::SlotProgress(unsigned int steps)
{
  m_Progress += steps;
  this->setValue(m_Progress);

  if (m_Progress >= m_TotalSteps)
    Reset();
  else
  {
    this->show();
  }

  // Update views if repaint has been requested in the meanwhile
  // (because Qt event loop is not reached while progress bar is updating,
  // unless the application is threaded)
  // qApp->processEvents();
  mitk::RenderingManager::GetInstance()->ExecutePendingRequests();
}

void QmitkProgressBar::SlotAddStepsToDo(unsigned int steps)
{
  m_TotalSteps += steps;
  this->setMaximum(m_TotalSteps);
  this->setValue(m_Progress);
  if (m_TotalSteps > 0)
  {
    this->show();
  }

  // Update views if repaint has been requested in the meanwhile
  // (because Qt event loop is not reached while progress bar is updating,
  // unless the application is threaded)
  mitk::RenderingManager::GetInstance()->ExecutePendingRequests();
}

void QmitkProgressBar::SlotSetPercentageVisible(bool visible)
{
  this->setTextVisible(visible);
}