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sdrangel/sdrgui/gui/logslider.h

58 lines
2.1 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
// written by Christian Daniel //
// Copyright (C) 2015-2019 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
// Copyright (C) 2021, 2023 Jon Beniston, M7RCE <jon@beniston.com> //
// //
// 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 as 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 V3 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 SDRGUI_GUI_LOGSLIDER_H
#define SDRGUI_GUI_LOGSLIDER_H
#include <QSlider>
#include "export.h"
// Logarithmic Slider (hozizontal only)
class SDRGUI_API LogSlider : public QSlider {
Q_OBJECT
public:
explicit LogSlider(QWidget *parent = nullptr);
void setRange(double min, double max);
void setValue(double value);
signals:
void logValueChanged(double value);
private slots:
void handleValueChanged(int value);
private:
double m_start;
double m_stop;
double m_steps;
static const int m_stepsPerPower = 100;
};
#endif // SDRGUI_GUI_LOGSLIDER_H