From c22d15ea358bdf99e8da38cba4bb3954f3823cb8 Mon Sep 17 00:00:00 2001
From: PianetaRadio <78976006+PianetaRadio@users.noreply.github.com>
Date: Wed, 8 Feb 2023 20:24:39 +0100
Subject: [PATCH] Sub meter peak hold

#35
---
 ChangeLog.txt  |  2 +-
 mainwindow.cpp |  5 +++++
 submeter.cpp   | 54 +++++++++++++++++++++++++++++++++++++++++++++++++-
 submeter.h     |  9 +++++++++
 4 files changed, 68 insertions(+), 2 deletions(-)

diff --git a/ChangeLog.txt b/ChangeLog.txt
index 0ec6732..f21807f 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -3,7 +3,7 @@ CatRadio
 (+ New, * Updated, - Removed)
 
 1.4.0 - 2023-mm-dd
-	+ Meter peak indicator
+	+ Meter peak hold indicator
 	+ Debug mode
 	* Power status improvement
 	* Bug fix: COM port list
diff --git a/mainwindow.cpp b/mainwindow.cpp
index fed1b1c..52a0ae9 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -174,6 +174,8 @@ MainWindow::MainWindow(QWidget *parent)
     ui->progressBar_Smeter->setValue(-54);
     ui->progressBar_Smeter->resetPeakValue();
     ui->progressBar_Smeter->setPeakFactor(rigCom.rigRefresh/1000.0);
+    ui->progressBar_subMeter->resetPeakValue();
+    ui->progressBar_subMeter->setPeakFactor(rigCom.rigRefresh/1000.0);
 
     //VFO
     ui->lineEdit_vfoMain->setValue(0);
@@ -277,6 +279,7 @@ void MainWindow::guiInit()
     //* Meters & Sub-meter comboBox
     //ui->progressBar_Smeter->setMaxValue(5); //FIXME tx_range_list
     ui->progressBar_Smeter->setPeak(guiConf.peakHold);
+    ui->progressBar_subMeter->setPeak(guiConf.peakHold);
     ui->comboBox_Meter->clear();
     if (rig_has_get_level(my_rig, RIG_METER_SWR)) ui->comboBox_Meter->addItem("SWR");
     if (rig_has_get_level(my_rig, RIG_METER_ALC)) ui->comboBox_Meter->addItem("ALC");
@@ -702,6 +705,8 @@ void MainWindow::setSubMeter()
         ui->progressBar_subMeter->setShortStep(0.1);
         ui->progressBar_subMeter->setValue(0);
     }
+
+    ui->progressBar_subMeter->resetPeakValue();
 }
 
 
diff --git a/submeter.cpp b/submeter.cpp
index 1b5a734..0676ac9 100644
--- a/submeter.cpp
+++ b/submeter.cpp
@@ -20,7 +20,6 @@
 #include "submeter.h"
 #include <QPainter>
 #include <math.h>
-#include <QDebug>
 
 SubMeter::SubMeter(QWidget *parent) : QWidget(parent)
 {
@@ -40,6 +39,10 @@ SubMeter::SubMeter(QWidget *parent) : QWidget(parent)
     meterSWR = 0;
 
     currentValue = 0;
+    peakValue = minValue;
+    peakFactor = 0.1;
+
+    peakHold = true;
 }
 
 void SubMeter::paintEvent(QPaintEvent *)
@@ -54,6 +57,7 @@ void SubMeter::paintEvent(QPaintEvent *)
 
     drawMeter(&painter);
     drawProgress(&painter);
+    if (peakHold) drawPeak(&painter);
     drawScale(&painter);
 }
 
@@ -116,6 +120,38 @@ void SubMeter::drawProgress(QPainter *painter)
     painter->restore();
 }
 
+void SubMeter::drawPeak(QPainter *painter)
+{
+    double max, min;
+    double gate;
+
+    painter->save();
+    painter->setPen(Qt::NoPen);
+
+    max = maxValue;
+    min = minValue;
+    gate = gateValue;
+    if (meterSWR) min = 1;   //SWR meter
+
+    double length = width()-14;
+    double increment = length / (max - min);
+    double initX;
+
+    if (currentValue>=peakValue) peakValue = currentValue;
+    else peakValue = peakValue - peakFactor*(peakValue - currentValue);
+    if (peakValue>max) peakValue = max;
+
+    if (peakValue>gate) painter->setBrush(QColor(Qt::red));
+    else painter->setBrush(progressColor);
+
+    initX = (peakValue - min) * increment;
+
+    QRect rect(initX - 2, height()/3+2+1, 2, height()/3-4-2);
+    painter->drawRect(rect);
+
+    painter->restore();
+}
+
 void SubMeter::drawScale(QPainter *painter)
 {
     painter->save();
@@ -276,3 +312,19 @@ void SubMeter::setMeterSWR(bool swr)
 {
     meterSWR = swr;
 }
+
+void SubMeter::setPeak(bool Peak)
+{
+    peakHold = Peak;
+}
+
+void SubMeter::setPeakFactor(double factor)
+{
+    peakFactor = factor;
+}
+
+void SubMeter::resetPeakValue()
+{
+    if (!meterSWR) peakValue = minValue;
+    else peakValue = 1.0;
+}
diff --git a/submeter.h b/submeter.h
index 52cf23a..dfe48e5 100644
--- a/submeter.h
+++ b/submeter.h
@@ -46,10 +46,15 @@ public slots:
 
     void setMeterSWR(bool swr);
 
+    void setPeak(bool Peak);
+    void setPeakFactor(double factor);
+    void resetPeakValue();
+
 protected:
     void paintEvent(QPaintEvent *);
     void drawMeter(QPainter *painter);
     void drawProgress(QPainter *painter);
+    void drawPeak(QPainter *painter);
     void drawScale(QPainter *painter);
 
 private:
@@ -64,6 +69,10 @@ private:
 
     double value;   //target value
     double currentValue;    //current value
+    double peakValue;   //peak value
+    double peakFactor;  //peak factor
+
+    bool peakHold;  //Peak hold
 
     QColor bgColor; //background color
     QColor lineColor;   //line color