mirror of
https://github.com/f4exb/sdrangel.git
synced 2025-10-29 20:10:22 -04:00
385 lines
12 KiB
C++
385 lines
12 KiB
C++
/****************************************************************************
|
|
* 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."
|
|
**
|
|
** $QT_END_LICENSE$
|
|
**
|
|
****************************************************************************/
|
|
|
|
#include "gui/levelmeter.h"
|
|
|
|
#include <math.h>
|
|
|
|
#include <QPainter>
|
|
#include <QTimer>
|
|
#include <QDebug>
|
|
|
|
// Constants
|
|
const int RedrawInterval = 100; // ms
|
|
const qreal PeakDecayRate = 0.001;
|
|
const int PeakHoldLevelDuration = 2000; // ms
|
|
|
|
LevelMeter::LevelMeter(QWidget *parent)
|
|
: QWidget(parent)
|
|
, m_avgLevel(0.0)
|
|
, m_peakLevel(0.0)
|
|
, m_decayedPeakLevel(0.0)
|
|
, m_peakDecayRate(PeakDecayRate)
|
|
, m_peakHoldLevel(0.0)
|
|
, m_avgSmoothing(256)
|
|
, m_redrawTimer(new QTimer(this))
|
|
, m_avgColor(0xff, 0x8b, 0x00, 128) // color mapper foreground
|
|
, m_peakColor(Qt::red) // just red 100% opaque
|
|
, m_decayedPeakColor(0x97, 0x54, 0x00, 128) // color mapper 59%
|
|
, m_backgroundPixmap(0)
|
|
{
|
|
setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
|
|
setMinimumWidth(30);
|
|
|
|
connect(m_redrawTimer, SIGNAL(timeout()), this, SLOT(redrawTimerExpired()));
|
|
m_redrawTimer->start(RedrawInterval);
|
|
}
|
|
|
|
LevelMeter::~LevelMeter()
|
|
{
|
|
if (m_backgroundPixmap) {
|
|
delete m_backgroundPixmap;
|
|
}
|
|
}
|
|
|
|
void LevelMeter::reset()
|
|
{
|
|
m_avgLevel = 0.0;
|
|
m_peakLevel = 0.0;
|
|
update();
|
|
}
|
|
|
|
void LevelMeter::levelChanged(qreal avgLevel, qreal peakLevel, int numSamples)
|
|
{
|
|
// Smooth the RMS signal
|
|
const qreal smooth = pow(qreal(0.9), static_cast<qreal>(numSamples) / m_avgSmoothing);
|
|
m_avgLevel = (m_avgLevel * smooth) + (avgLevel * (1.0 - smooth));
|
|
|
|
if (peakLevel > m_decayedPeakLevel) {
|
|
m_peakLevel = peakLevel;
|
|
m_decayedPeakLevel = peakLevel;
|
|
m_peakLevelChanged.start();
|
|
}
|
|
|
|
if (peakLevel > m_peakHoldLevel) {
|
|
m_peakHoldLevel = peakLevel;
|
|
m_peakHoldLevelChanged.start();
|
|
}
|
|
|
|
update();
|
|
}
|
|
|
|
void LevelMeter::redrawTimerExpired()
|
|
{
|
|
// Decay the peak signal
|
|
const int elapsedMs = m_peakLevelChanged.elapsed();
|
|
const qreal decayAmount = m_peakDecayRate * elapsedMs;
|
|
if (decayAmount < m_peakLevel)
|
|
m_decayedPeakLevel = m_peakLevel - decayAmount;
|
|
else
|
|
m_decayedPeakLevel = 0.0;
|
|
|
|
// Check whether to clear the peak hold level
|
|
if (m_peakHoldLevelChanged.elapsed() > PeakHoldLevelDuration)
|
|
m_peakHoldLevel = 0.0;
|
|
|
|
update();
|
|
}
|
|
|
|
void LevelMeter::paintEvent(QPaintEvent *event)
|
|
{
|
|
Q_UNUSED(event)
|
|
|
|
QPainter painter(this);
|
|
render(&painter);
|
|
}
|
|
|
|
void LevelMeter::resizeEvent(QResizeEvent * event)
|
|
{
|
|
Q_UNUSED(event)
|
|
|
|
resized();
|
|
}
|
|
|
|
void LevelMeter::setAverageSmoothing(uint32_t smoothingFactor)
|
|
{
|
|
m_avgSmoothing = smoothingFactor < 1 ? 1 : smoothingFactor > 256 ? 256 : smoothingFactor;
|
|
}
|
|
|
|
// ====================================================================
|
|
|
|
LevelMeterVU::LevelMeterVU(QWidget *parent) :
|
|
LevelMeter(parent)
|
|
{
|
|
m_scaleEngine.setFont(font());
|
|
m_scaleEngine.setOrientation(Qt::Horizontal);
|
|
m_scaleEngine.setRange(Unit::Percent, 0, 100);
|
|
|
|
resized();
|
|
}
|
|
|
|
LevelMeterVU::~LevelMeterVU()
|
|
{
|
|
}
|
|
|
|
void LevelMeterVU::resized()
|
|
{
|
|
if (m_backgroundPixmap)
|
|
{
|
|
delete m_backgroundPixmap;
|
|
}
|
|
|
|
m_backgroundPixmap = new QPixmap(rect().width(), rect().height());
|
|
m_backgroundPixmap->fill(QColor(42, 42, 42, 255));
|
|
|
|
QPainter painter(m_backgroundPixmap);
|
|
QRect barTop = m_backgroundPixmap->rect();
|
|
barTop.setBottom(0.5 * rect().height() - 2);
|
|
barTop.setTop(2);
|
|
barTop.setLeft(0.75* rect().width());
|
|
painter.fillRect(barTop, Qt::red);
|
|
|
|
QRect bar = m_backgroundPixmap->rect();
|
|
|
|
// 100% full height white line
|
|
painter.setPen(Qt::white);
|
|
painter.setFont(font());
|
|
// painter.drawLine(0.75*bar.width(), 0, 0.75*bar.width(), bar.height());
|
|
|
|
m_scaleEngine.setSize(0.75*bar.width());
|
|
const ScaleEngine::TickList& scaleTickList = m_scaleEngine.getTickList();
|
|
|
|
|
|
for (int i = 0; i < scaleTickList.count(); i++)
|
|
{
|
|
// qDebug() << "LevelMeterVU::resized: tick #" << i
|
|
// << " major: " << scaleTickList[i].major
|
|
// << " pos: " << scaleTickList[i].pos
|
|
// << " text: " << scaleTickList[i].text
|
|
// << " textPos: " << scaleTickList[i].textPos
|
|
// << " textSize: " << scaleTickList[i].textSize;
|
|
const ScaleEngine::Tick tick = scaleTickList[i];
|
|
|
|
if(tick.major)
|
|
{
|
|
if ((tick.textSize > 0) && (tick.textPos > 0))
|
|
{
|
|
painter.drawText(QPointF(tick.textPos - (tick.textSize/2) - 4, bar.height()/2 - 3), tick.text);
|
|
}
|
|
|
|
painter.drawLine(shiftx(tick.pos, bar.width()), 0, shiftx(scaleTickList[i].pos, bar.width()), bar.height());
|
|
}
|
|
else
|
|
{
|
|
painter.drawLine(tick.pos, bar.height()/2 - 2, scaleTickList[i].pos, bar.height()/2);
|
|
}
|
|
}
|
|
}
|
|
|
|
void LevelMeterVU::render(QPainter *painter)
|
|
{
|
|
painter->drawPixmap(rect(), *m_backgroundPixmap);
|
|
|
|
QRect bar = rect();
|
|
|
|
// Bottom moving gauge
|
|
|
|
bar.setTop(0.5 * rect().height() + 2);
|
|
bar.setBottom(rect().height() - 1);
|
|
|
|
bar.setRight(rect().right() - (1.0 - 0.75*m_peakHoldLevel) * rect().width());
|
|
bar.setLeft(bar.right() - 2);
|
|
painter->fillRect(bar, m_peakColor);
|
|
|
|
bar.setBottom(0.75*rect().height());
|
|
|
|
bar.setRight(rect().right() - (1.0 - 0.75*m_avgLevel) * rect().width());
|
|
bar.setLeft(1);
|
|
painter->fillRect(bar, m_avgColor);
|
|
|
|
bar.setTop(0.75 * rect().height() + 1);
|
|
bar.setBottom(rect().height() - 1);
|
|
|
|
bar.setRight(rect().right() - (1.0 - 0.75*m_decayedPeakLevel) * rect().width());
|
|
painter->fillRect(bar, m_decayedPeakColor);
|
|
|
|
// borders
|
|
painter->setPen(QColor(0,0,0));
|
|
painter->drawLine(0, 0, rect().width() - 2, 0);
|
|
painter->drawLine(0, rect().height() - 1, 0, 0);
|
|
painter->setPen(QColor(80,80,80));
|
|
painter->drawLine(1, rect().height() - 1, rect().width() - 1, rect().height() - 1);
|
|
painter->drawLine(rect().width() - 1, rect().height() - 1, rect().width() - 1, 0);
|
|
}
|
|
|
|
// ====================================================================
|
|
|
|
const QColor LevelMeterSignalDB::m_avgColor[4] = {
|
|
QColor(0xff, 0x8b, 0x00, 128),
|
|
QColor(0x8c, 0xff, 0x00, 128),
|
|
QColor(0x8c, 0xff, 0x00, 128),
|
|
QColor(0x8c, 0xbf, 0xff, 128),
|
|
};
|
|
|
|
const QColor LevelMeterSignalDB::m_decayedPeakColor[4] = {
|
|
QColor(0x97, 0x54, 0x00, 128),
|
|
QColor(0x53, 0x96, 0x00, 128),
|
|
QColor(0x00, 0x96, 0x53, 128),
|
|
QColor(0x00, 0x94, 0x94, 128),
|
|
};
|
|
|
|
const QColor LevelMeterSignalDB::m_peakColor[4] = {
|
|
Qt::red,
|
|
Qt::green,
|
|
Qt::green,
|
|
Qt::cyan
|
|
};
|
|
|
|
LevelMeterSignalDB::LevelMeterSignalDB(QWidget *parent) :
|
|
LevelMeter(parent),
|
|
m_colorTheme(ColorGold)
|
|
{
|
|
m_scaleEngine.setFont(font());
|
|
m_scaleEngine.setOrientation(Qt::Horizontal);
|
|
m_scaleEngine.setRange(Unit::Decibel, -100, 0);
|
|
|
|
resized();
|
|
}
|
|
|
|
LevelMeterSignalDB::~LevelMeterSignalDB()
|
|
{
|
|
}
|
|
|
|
void LevelMeterSignalDB::setRange(int min, int max)
|
|
{
|
|
m_scaleEngine.setRange(Unit::Decibel, min, max);
|
|
}
|
|
|
|
void LevelMeterSignalDB::resized()
|
|
{
|
|
if (m_backgroundPixmap)
|
|
{
|
|
delete m_backgroundPixmap;
|
|
}
|
|
|
|
m_backgroundPixmap = new QPixmap(rect().width(), rect().height());
|
|
m_backgroundPixmap->fill(QColor(42, 42, 42, 255));
|
|
|
|
QPainter painter(m_backgroundPixmap);
|
|
QRect bar = m_backgroundPixmap->rect();
|
|
|
|
// 100% full height white line
|
|
painter.setPen(Qt::white);
|
|
painter.setFont(font());
|
|
|
|
m_scaleEngine.setSize(bar.width());
|
|
const ScaleEngine::TickList& scaleTickList = m_scaleEngine.getTickList();
|
|
|
|
|
|
for (int i = 0; i < scaleTickList.count(); i++)
|
|
{
|
|
// qDebug() << "LevelMeterVU::resized: tick #" << i
|
|
// << " major: " << scaleTickList[i].major
|
|
// << " pos: " << scaleTickList[i].pos
|
|
// << " text: " << scaleTickList[i].text
|
|
// << " textPos: " << scaleTickList[i].textPos
|
|
// << " textSize: " << scaleTickList[i].textSize;
|
|
const ScaleEngine::Tick tick = scaleTickList[i];
|
|
|
|
if(tick.major)
|
|
{
|
|
if ((tick.textSize > 0) && (tick.textPos > 0))
|
|
{
|
|
painter.drawText(QPointF(tick.textPos - (tick.textSize/2) - 4, bar.height()/2 - 3), tick.text);
|
|
}
|
|
|
|
painter.drawLine(shiftx(tick.pos, bar.width()), 0, shiftx(scaleTickList[i].pos,bar.width()), bar.height());
|
|
}
|
|
else
|
|
{
|
|
painter.drawLine(tick.pos, bar.height()/2 - 2, scaleTickList[i].pos, bar.height()/2);
|
|
}
|
|
}
|
|
}
|
|
|
|
void LevelMeterSignalDB::render(QPainter *painter)
|
|
{
|
|
painter->drawPixmap(rect(), *m_backgroundPixmap);
|
|
|
|
QRect bar = rect();
|
|
|
|
// Bottom moving gauge
|
|
|
|
bar.setTop(0.5 * rect().height() + 2);
|
|
bar.setBottom(0.75*rect().height());
|
|
|
|
bar.setRight(rect().right() - (1.0 - m_avgLevel) * rect().width());
|
|
bar.setLeft(1);
|
|
painter->fillRect(bar, m_avgColor[m_colorTheme]);
|
|
|
|
bar.setTop(0.75 * rect().height() + 1);
|
|
bar.setBottom(rect().height() - 1);
|
|
|
|
bar.setRight(rect().right() - (1.0 - m_decayedPeakLevel) * rect().width());
|
|
painter->fillRect(bar, m_decayedPeakColor[m_colorTheme]);
|
|
|
|
bar.setTop(0.5 * rect().height() + 2);
|
|
bar.setBottom(rect().height() - 1);
|
|
|
|
bar.setRight(rect().right() - (1.0 - m_peakHoldLevel) * rect().width());
|
|
bar.setLeft(bar.right() - 2);
|
|
painter->fillRect(bar, m_peakColor[m_colorTheme]);
|
|
|
|
// borders
|
|
painter->setPen(QColor(0,0,0));
|
|
painter->drawLine(0, 0, rect().width() - 2, 0);
|
|
painter->drawLine(0, rect().height() - 1, 0, 0);
|
|
painter->setPen(QColor(80,80,80));
|
|
painter->drawLine(1, rect().height() - 1, rect().width() - 1, rect().height() - 1);
|
|
painter->drawLine(rect().width() - 1, rect().height() - 1, rect().width() - 1, 0);
|
|
}
|
|
|