labelslider.h

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/***

    Olive - Non-Linear Video Editor
    Copyright (C) 2019  Olive Team

    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 3 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/>.

***/

#ifndef LABELSLIDER_H
#define LABELSLIDER_H

#include <QLabel>
#include <QUndoCommand>

enum LabelSliderDisplayType {
    LABELSLIDER_NORMAL,
    LABELSLIDER_FRAMENUMBER,
    LABELSLIDER_PERCENT,
    LABELSLIDER_DECIBEL
};

class LabelSlider : public QLabel
{
    Q_OBJECT
public:
    LabelSlider(QWidget* parent = nullptr);

    void set_frame_rate(double d);

    void set_display_type(int type);

    void set_value(double v, bool userSet);

    void set_default_value(double v);

    void set_minimum_value(double v);

    void set_maximum_value(double v);

    double value();

    bool is_set();

    bool is_dragging();

    QString valueToString();

    double getPreviousValue();

    void set_previous_value();

    void set_color(QString c = nullptr);

    int decimal_places;
protected:
    void mousePressEvent(QMouseEvent *ev);
    void mouseMoveEvent(QMouseEvent *ev);
    void mouseReleaseEvent(QMouseEvent *ev);
private:
    double default_value;
    double internal_value;
    double drag_start_value;
    double previous_value;

    bool min_enabled;
    double min_value;
    bool max_enabled;
    double max_value;

    bool drag_start;
    bool drag_proc;
    int drag_start_x;
    int drag_start_y;

    bool set;

    int display_type;

    double frame_rate;

    void set_default_cursor();

    void set_active_cursor();
signals:
    void valueChanged();

    void clicked();
};

#endif // LABELSLIDER_H