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 /* This file is part of the KDE project
    Copyright (c) 2007 C. Boemann <cbo@boemann.dk>
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library 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 License for more details.
 
    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
 */
 
 #ifndef KOSLIDERCOMBO_H_
 #define KOSLIDERCOMBO_H_
 
 #include <QComboBox>
 
 #include "kowidgets_export.h"
 
 /**
  * @short A widget for qreal values with a popup slider
  *
  * KoSliderCombo combines a numerical input and a dropdown slider in a way that takes up as
  * little screen space as possible.
  * 
  * It allows the user to either enter a floating point value or quickly set the value using a slider
  * 
  * One signal is emitted when the value changes. The signal is even emitted when the slider
  * is moving. The second argument of the signal however tells you if the value is final or not. A
  * final value is produced by entering a value numerically or by releasing the slider.
  * 
  * The input of the numerical line edit is constrained to numbers and decimal signs.
  */
 class KOWIDGETS_EXPORT KoSliderCombo : public QComboBox
 {
 
     Q_OBJECT
 
 public:
 
     /**
      * Constructor for the widget, where value is set to 0
      *
      * @param parent parent QWidget
      */
     explicit KoSliderCombo(QWidget *parent = nullptr);
 
     /**
      * Destructor
      */
     ~KoSliderCombo() override;
 
     /**
      * The precision of values given as the number of digits after the period.
      * default is 2
      */
     qreal decimals() const;
 
     /**
      * The minimum value that can be entered.
      * default is 0
      */
     qreal minimum() const;
 
     /**
      * The maximum value that can be entered.
      * default is 100
      */
     qreal maximum() const;
 
     /**
      * Sets the precision of the entered values.
      * @param number the number of digits after the period
      */
 
     void setDecimals(int number);
 
     /**
      * Sets the minimum value that can be entered.
      * @param min the minimum value
      */
     void setMinimum(qreal min);
 
     /**
      * Sets the maximum value that can be entered.
      * @param max the maximum value
      */
     void setMaximum(qreal max);
 
      /**
      * The value shown.
      */
     qreal value() const;
 
     QSize minimumSizeHint() const override; ///< reimplemented from QComboBox
     QSize sizeHint() const override; ///< reimplemented from QComboBox
 
 public Q_SLOTS:
 
      /**
      * Sets the value.
      * The value actually set is forced to be within the legal range: minimum <= value <= maximum
      * @param value the new value
      */
     void setValue(qreal value);
 
 Q_SIGNALS:
 
     /**
      * Emitted every time the value changes (by calling setValue() or
      * by user interaction).
      * @param value the new value
      * @param final if the value is final ie not produced during sliding (on slider release it's final)
      */
     void valueChanged(qreal value, bool final);
 
 protected:
     void paintEvent(QPaintEvent *) override; ///< reimplemented from QComboBox
     void hideEvent(QHideEvent *) override; ///< reimplemented from QComboBox
     void changeEvent(QEvent *e) override; ///< reimplemented from QComboBox
     void mousePressEvent(QMouseEvent *e) override; ///< reimplemented from QComboBox
     void keyPressEvent(QKeyEvent *e) override; ///< reimplemented from QComboBox
     void wheelEvent(QWheelEvent *e) override; ///< reimplemented from QComboBox
 
 private:
     Q_PRIVATE_SLOT(d, void sliderValueChanged(int value))
     Q_PRIVATE_SLOT(d, void sliderReleased())
     Q_PRIVATE_SLOT(d, void lineEditFinished())
 
     class KoSliderComboPrivate;
     KoSliderComboPrivate * const d;
 };
 
 #endif