/************************************************************************
*
* Copyright 2010 Jakob Leben (jakob.leben@gmail.com)
*
* This file is part of SuperCollider Qt GUI.
*
* This program 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.
*
* This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*
************************************************************************/

#pragma once

#include <QLineEdit>

#include "QcAbstractStepValue.h"
#include "../QcHelper.h"

#include <QDoubleValidator>

class QcNumberBox : public QLineEdit, QcHelper, QcAbstractStepValue
{
  Q_OBJECT
  Q_PROPERTY( double shiftScale READ dummyFloat WRITE setShiftScale );
  Q_PROPERTY( double ctrlScale READ dummyFloat WRITE setCtrlScale );
  Q_PROPERTY( double altScale READ dummyFloat WRITE setAltScale );

  Q_PROPERTY( double minimum READ minimum WRITE setMinimum );
  Q_PROPERTY( double maximum READ maximum WRITE setMaximum );
  Q_PROPERTY( int decimals READ decimals WRITE setDecimals );
  Q_PROPERTY( int maxDecimals READ maxDecimals WRITE setMaxDecimals );
  Q_PROPERTY( int minDecimals READ minDecimals WRITE setMinDecimals );
  Q_PROPERTY( double value READ value WRITE setValue );
  Q_PROPERTY( int valueType READ valueType );
  Q_PROPERTY( QString text READ text WRITE setTextValue );

  Q_PROPERTY( double step READ dummyFloat WRITE setStep )
  Q_PROPERTY( double scrollStep READ dummyFloat WRITE setScrollStep )
  Q_PROPERTY( bool scroll READ dummyBool WRITE setScroll );

  Q_PROPERTY( QColor normalColor READ dummyColor WRITE setTextColor );
  Q_PROPERTY( QColor editingColor READ dummyColor WRITE setEditedTextColor );

  public:

    enum ValueType {
      Number,
      Infinite,
      InfiniteNegative,
      NaN,
      Text
    };

    QcNumberBox();
    void setStep( double step_ ) { step = step_;}
    void setScrollStep( double step_ ) { scrollStep = step_; }
    void setScroll( bool b ) { scroll = b; }
    void setLocked( bool );
    void setTextColor( const QColor& c );
    void setEditedTextColor( const QColor& c );
    void setValue( double );
    Q_INVOKABLE void setInfinite( bool positive = true );
    Q_INVOKABLE void setNaN();
    void setTextValue( const QString & );
    double value() const;
    int valueType() const { return (int) _valueType; }
    double minimum() const { return _validator->bottom(); }
    double maximum() const { return _validator->top(); }
    void setMinimum( double );
    void setMaximum( double );
    int decimals() const { return maxDecimals(); }
    int minDecimals() const { return _minDec; }
    int maxDecimals() const { return _maxDec; }
    void setDecimals( int );
    void setMinDecimals( int );
    void setMaxDecimals( int );

  public Q_SLOTS:
    void increment( double factor );
    void decrement( double factor );

  Q_SIGNALS:
    void scrolled( int steps );
    void valueChanged();
    void action();

  private Q_SLOTS:
    void onEditingFinished();
    void updateText();
  protected:
    virtual void keyPressEvent ( QKeyEvent * event );
    virtual void mouseDoubleClickEvent ( QMouseEvent * event );
    virtual void mousePressEvent ( QMouseEvent * event );
    virtual void mouseMoveEvent ( QMouseEvent * event );
    virtual void wheelEvent ( QWheelEvent * event );
  private:
    void stepBy( int steps, double stepSize );
    double roundedVal( double val );
    QString stringForVal( double val );
    void updateTextColor();
    inline void doAction();

    bool scroll;
    int lastPos;
    QColor editedTextColor;
    QColor normalTextColor;

    QDoubleValidator *_validator;
    double step;
    double scrollStep;
    float dragDist;
    double _value;
    ValueType _valueType;
    int _minDec;
    int _maxDec;
};

#if 0
class NumberBoxWidget : public QDoubleSpinBox
{
  friend class SCNumberBox;

  Q_OBJECT

  public:
    NumberBoxWidget( );
    void setScroll( bool b );
  private Q_SLOTS:
    void stepBy( int steps );
    void scrollBy( int steps );
    void onEditingFinished();
  protected:
    virtual void keyPressEvent ( QKeyEvent * event );
  private:
    void stepBy( int steps, float stepSize );
    SCAbstractStepValue *modifier;
    float scrollStep;
};
#endif
