mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-23 16:38:37 -05:00
204 lines
6.7 KiB
C++
204 lines
6.7 KiB
C++
///////////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2016-2020 Edouard Griffiths, F4EXB <f4exb06@gmail.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/>. //
|
|
///////////////////////////////////////////////////////////////////////////////////////
|
|
/****************************************************************************
|
|
* Copyright (C) 2016 Edouard Griffiths, F4EXB
|
|
* Modifications made to:
|
|
* - use the widget horizontally
|
|
* - differentiate each area with a different color
|
|
* - allow overload by 25% with indication of 100% threshold and overload
|
|
* - make it generic to fit many cases: VU, signal strength ...
|
|
**
|
|
** Copyright (C) 2015 The Qt Company Ltd.
|
|
** Contact: http://www.qt.io/licensing/
|
|
**
|
|
** This file is part of the examples of the Qt Toolkit.
|
|
**
|
|
** $QT_BEGIN_LICENSE:BSD$
|
|
** You may use this file under the terms of the BSD license as follows:
|
|
**
|
|
** "Redistribution and use in source and binary forms, with or without
|
|
** modification, are permitted provided that the following conditions are
|
|
** met:
|
|
** * Redistributions of source code must retain the above copyright
|
|
** notice, this list of conditions and the following disclaimer.
|
|
** * Redistributions in binary form must reproduce the above copyright
|
|
** notice, this list of conditions and the following disclaimer in
|
|
** the documentation and/or other materials provided with the
|
|
** distribution.
|
|
** * Neither the name of The Qt Company Ltd nor the names of its
|
|
** contributors may be used to endorse or promote products derived
|
|
** from this software without specific prior written permission.
|
|
**
|
|
**
|
|
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#ifndef SDRBASE_GUI_LEVELMETER_H_
|
|
#define SDRBASE_GUI_LEVELMETER_H_
|
|
|
|
#include <QTime>
|
|
#include <QElapsedTimer>
|
|
#include <QWidget>
|
|
|
|
#include "gui/scaleengine.h"
|
|
#include "export.h"
|
|
|
|
/**
|
|
* Widget which displays a vertical audio level meter, indicating the
|
|
* RMS and peak levels of the window of audio samples most recently analyzed
|
|
* by the Engine.
|
|
*/
|
|
class SDRGUI_API LevelMeter : public QWidget
|
|
{
|
|
Q_OBJECT
|
|
|
|
public:
|
|
LevelMeter(QWidget *parent = 0);
|
|
virtual ~LevelMeter();
|
|
|
|
void paintEvent(QPaintEvent *event);
|
|
void resizeEvent(QResizeEvent * event);
|
|
|
|
void setAverageSmoothing(uint32_t smoothingFactor);
|
|
|
|
public slots:
|
|
void reset();
|
|
void levelChanged(qreal rmsLevel, qreal peakLevel, int numSamples);
|
|
|
|
protected slots:
|
|
void redrawTimerExpired();
|
|
|
|
protected:
|
|
/**
|
|
* Height of RMS level bar.
|
|
* Range 0.0 - 1.0.
|
|
*/
|
|
qreal m_avgLevel;
|
|
|
|
/**
|
|
* Most recent peak level.
|
|
* Range 0.0 - 1.0.
|
|
*/
|
|
qreal m_peakLevel;
|
|
|
|
/**
|
|
* Height of peak level bar.
|
|
* This is calculated by decaying m_peakLevel depending on the
|
|
* elapsed time since m_peakLevelChanged, and the value of m_decayRate.
|
|
*/
|
|
qreal m_decayedPeakLevel;
|
|
|
|
/**
|
|
* Time at which m_peakLevel was last changed.
|
|
*/
|
|
QElapsedTimer m_peakLevelChanged;
|
|
|
|
/**
|
|
* Rate at which peak level bar decays.
|
|
* Expressed in level units / millisecond.
|
|
*/
|
|
qreal m_peakDecayRate;
|
|
|
|
/**
|
|
* High watermark of peak level.
|
|
* Range 0.0 - 1.0.
|
|
*/
|
|
qreal m_peakHoldLevel;
|
|
|
|
/**
|
|
* Time at which m_peakHoldLevel was last changed.
|
|
*/
|
|
QElapsedTimer m_peakHoldLevelChanged;
|
|
|
|
/**
|
|
* Average smoothing factor (between 1: fast and 256: slow)
|
|
*/
|
|
uint32_t m_avgSmoothing;
|
|
|
|
QTimer *m_redrawTimer;
|
|
|
|
QColor m_avgColor;
|
|
QColor m_peakColor;
|
|
QColor m_decayedPeakColor;
|
|
|
|
ScaleEngine m_scaleEngine;
|
|
QPixmap *m_backgroundPixmap;
|
|
|
|
virtual void render(QPainter *painter) = 0;
|
|
virtual void resized() = 0;
|
|
|
|
/** Shift the x coordinate so it does not fall right on 0 or width-1 */
|
|
int shiftx(int val, int width)
|
|
{
|
|
return val == 0 ? 1 : val == width-1 ? width-2 : val;
|
|
}
|
|
};
|
|
|
|
class SDRGUI_API LevelMeterVU : public LevelMeter
|
|
{
|
|
public:
|
|
LevelMeterVU(QWidget *parent = 0);
|
|
virtual ~LevelMeterVU();
|
|
protected:
|
|
virtual void render(QPainter *painter);
|
|
virtual void resized();
|
|
};
|
|
|
|
class SDRGUI_API LevelMeterSignalDB : public LevelMeter
|
|
{
|
|
public:
|
|
typedef enum
|
|
{
|
|
ColorGold,
|
|
ColorGreenYellow,
|
|
ColorGreenAndBlue,
|
|
ColorCyanAndBlue
|
|
} ColorTheme;
|
|
|
|
LevelMeterSignalDB(QWidget *parent = 0);
|
|
virtual ~LevelMeterSignalDB();
|
|
|
|
void setColorTheme(ColorTheme colorTheme) { m_colorTheme = colorTheme; }
|
|
void setRange(int min, int max, bool sUnits = false);
|
|
void setS(bool s);
|
|
|
|
static const QColor m_avgColor[4];
|
|
static const QColor m_decayedPeakColor[4];
|
|
static const QColor m_peakColor[4];
|
|
|
|
protected:
|
|
virtual void render(QPainter *painter);
|
|
virtual void resized();
|
|
|
|
ColorTheme m_colorTheme;
|
|
};
|
|
|
|
#endif /* SDRBASE_GUI_LEVELMETER_H_ */
|