niftkMouseEventEater.h

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

  NifTK: A software platform for medical image computing.

  Copyright (c) University College London (UCL). 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 in the top level directory for details.

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

#ifndef niftkMouseEventEater_h
#define niftkMouseEventEater_h

#include "niftkCoreGuiExports.h"
#include <QWidget>
#include <QEvent>

namespace niftk
{

class NIFTKCOREGUI_EXPORT MouseEventEater : public QObject
{
  Q_OBJECT

public:
  MouseEventEater(QWidget* parent=NULL)
    : QObject(parent)
  {
    m_IsEating = true;
  }
  ~MouseEventEater()
  {
  }
  void SetIsEating(bool b)
  {
    m_IsEating = b;
  }
  bool GetIsEating() const
  {
    return m_IsEating;
  }
protected:
  virtual bool eventFilter(QObject *obj, QEvent *event) override
  {
    if (m_IsEating &&
        (   event->type() == QEvent::MouseButtonDblClick
         || event->type() == QEvent::MouseButtonPress
         || event->type() == QEvent::MouseButtonRelease
         || event->type() == QEvent::MouseMove
         || event->type() == QEvent::MouseTrackingChange
        )) {
      return true;
    } else {
      // standard event processing
      return QObject::eventFilter(obj, event);
    }
  }
private:
  bool m_IsEating;
};

}

#endif