doubleRangeSlider.h

/* ********************************************************************
    itom software
    URL: http://www.uni-stuttgart.de/ito
    Copyright (C) 2020, Institut fuer Technische Optik (ITO),
    Universitaet Stuttgart, Germany

    This file is part of itom and its software development toolkit (SDK).

    itom is free software; you can redistribute it and/or modify it
    under the terms of the GNU Library General Public Licence as published by
    the Free Software Foundation; either version 2 of the Licence, or (at
    your option) any later version.
   
    In addition, as a special exception, the Institut fuer Technische
    Optik (ITO) gives you certain additional rights.
    These rights are described in the ITO LGPL Exception version 1.0,
    which can be found in the file LGPL_EXCEPTION.txt in this package.

    itom 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 Library
    General Public Licence for more details.

    You should have received a copy of the GNU Library General Public License
    along with itom. If not, see <http://www.gnu.org/licenses/>.

    This file is a port and modified version of the 
    Common framework (http://www.commontk.org)
*********************************************************************** */

#ifndef DOUBLERANGESLIDER_H
#define DOUBLERANGESLIDER_H

// Qt includes
#include <QWidget>
#include <QSlider>

#include "commonWidgets.h"

class RangeSlider;
class DoubleRangeSliderPrivate;
class ValueProxy;

class ITOMWIDGETS_EXPORT DoubleRangeSlider : public QWidget
{
  Q_OBJECT      
  Q_PROPERTY(double minimum READ minimum WRITE setMinimum)
  Q_PROPERTY(double maximum READ maximum WRITE setMaximum)
  Q_PROPERTY(double singleStep READ singleStep WRITE setSingleStep)
  Q_PROPERTY(double minimumValue READ minimumValue WRITE setMinimumValue)
  Q_PROPERTY(double maximumValue READ maximumValue WRITE setMaximumValue)
  Q_PROPERTY(double minimumPosition READ minimumPosition WRITE setMinimumPosition)
  Q_PROPERTY(double maximumPosition READ maximumPosition WRITE setMaximumPosition)
  Q_PROPERTY(bool tracking READ hasTracking WRITE setTracking)
  Q_PROPERTY(Qt::Orientation orientation READ orientation WRITE setOrientation)
  Q_PROPERTY(double tickInterval READ tickInterval WRITE setTickInterval)
  Q_PROPERTY(QSlider::TickPosition tickPosition READ tickPosition WRITE setTickPosition)
  Q_PROPERTY(bool symmetricMoves READ symmetricMoves WRITE setSymmetricMoves)
public:
  // Superclass typedef
  typedef QWidget Superclass;
  
  DoubleRangeSlider( Qt::Orientation o, QWidget* par= 0 );

  DoubleRangeSlider( QWidget* par = 0 );
  
  virtual ~DoubleRangeSlider();
  
  void setSingleStep(double ss);
  double singleStep()const;

  bool isValidStep(double step)const;

  void setTickInterval(double ti);
  double tickInterval()const;
  
  void setTickPosition(QSlider::TickPosition position);
  QSlider::TickPosition tickPosition()const;
  
  double minimum()const;
  void setMinimum(double min);

  double maximum()const;
  void setMaximum(double max);

  void setRange(double min, double max);

  double minimumValue() const;

  double maximumValue() const;
  
  double minimumPosition() const;
  void setMinimumPosition(double minPos);

  double maximumPosition() const;
  void setMaximumPosition(double maxPos);

  void setPositions(double minPos, double maxPos);

  void setTracking(bool enable);
  bool hasTracking()const;
  
  void triggerAction(QAbstractSlider::SliderAction action);

  Qt::Orientation orientation()const;
  void setOrientation(Qt::Orientation orientation);

  bool symmetricMoves()const; 
  void setSymmetricMoves(bool symmetry);

  void setValueProxy(ValueProxy* proxy);
  ValueProxy* valueProxy() const;

signals:
  void minimumValueChanged(double minVal);

  void maximumValueChanged(double maxVal);

  void valuesChanged(double minVal, double maxVal);

  void minimumPositionChanged(double minPos);

  void maximumPositionChanged(double maxPos);
  
  void positionsChanged(double minPos, double maxPos);

  void sliderPressed();

  void sliderReleased();

  void rangeChanged(double min, double max);

public slots:
  void setMinimumValue(double minVal);

  void setMaximumValue(double maxVal);
  
  void setValues(double minVal, double maxVal);

protected slots:
  void onValuesChanged(int min, int max);

  void onMinPosChanged(int value);
  void onMaxPosChanged(int value);
  void onPositionsChanged(int min, int max);
  void onRangeChanged(int min, int max);

  void onValueProxyAboutToBeModified();
  void onValueProxyModified();

protected:
  RangeSlider* slider()const;
  void setSlider(RangeSlider* slider);

protected:
  QScopedPointer<DoubleRangeSliderPrivate> d_ptr;

private:
  Q_DECLARE_PRIVATE(DoubleRangeSlider);
  Q_DISABLE_COPY(DoubleRangeSlider);
};

#endif