/************************************************************************
*
* Copyright 2010-2012 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 "QcAbstractStepValue.h"
#include "../QcHelper.h"
#include "../style/style.hpp"

#include <QWidget>

class QcSlider : public QWidget, QcHelper, QcAbstractStepValue, QtCollider::Style::Client
{
  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 step READ step WRITE setStep )
  Q_PROPERTY( double pixelStep READ pixelStep )
  Q_PROPERTY( double value READ value WRITE setValue );
  Q_PROPERTY( int orientation READ orientation WRITE setOrientation );
  Q_PROPERTY( int handleLength READ handleLength WRITE setHandleLength );
  Q_PROPERTY( QColor grooveColor READ grooveColor WRITE setGrooveColor );
  Q_PROPERTY( QColor focusColor READ focusColor WRITE setFocusColor );
  Q_PROPERTY( QColor knobColor READ knobColor WRITE setKnobColor );

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

  Q_SIGNALS:
    void action();
    void preAction( double );

  public:
    QcSlider();
    double value() { return _value; }
    void setValue( double val );

    double step() { return _step; }
    void setStep( double d ) { _step = d; }
    double pixelStep();

    Qt::Orientation orientation() const { return _ort; }
    void setOrientation( int );

    int handleLength() const { return _hndLen; }
    void setHandleLength( int i ) { _hndLen = i; updateGeometry(); update(); }

    const QColor & knobColor() const
      { return _knobColor.isValid() ? _knobColor : palette().color(QPalette::ButtonText); }
    void setKnobColor(const QColor &c) { _knobColor = c; update(); }

    virtual QSize sizeHint() const;
    virtual QSize minimumSizeHint() const;

  protected:
    virtual void mousePressEvent ( QMouseEvent * );
    virtual void mouseMoveEvent ( QMouseEvent * );
    virtual void wheelEvent ( QWheelEvent * );
    virtual void paintEvent ( QPaintEvent * );

  private:
    QRect thumbRect ();
    double valueAt( const QPoint &pos );

    Qt::Orientation _ort;
    double _value;
    double _step;
    int _hndLen;

    QColor _knobColor;
};
