2021-06-25 Fred Gleason <fredg@paravelsystems.com>

* Added an 'RDMeterStrip' widget.

Signed-off-by: Fred Gleason <fredg@paravelsystems.com>

lib/Makefile.am

@@ -197,6 +197,7 @@ dist_librd_la_SOURCES = dbversion.h\
                         rdmatrixlistmodel.cpp rdmatrixlistmodel.h\
                         rdmblookup.cpp rdmblookup.h\
                         rdmeteraverage.cpp rdmeteraverage.h\
+                        rdmeterstrip.cpp rdmeterstrip.h\
                         rdmixer.cpp rdmixer.h\
                         rdmonitor_config.cpp rdmonitor_config.h\
 			rdmp4.cpp rdmp4.h\
@@ -379,6 +380,7 @@ nodist_librd_la_SOURCES = moc_rdadd_cart.cpp\
                           moc_rdmarkerview.cpp\
                           moc_rdmatrixlistmodel.cpp\
                           moc_rdmblookup.cpp\
+                          moc_rdmeterstrip.cpp\
                           moc_rdmulticaster.cpp\
                           moc_rdnodelistmodel.cpp\
                           moc_rdnodeslotsmodel.cpp\

lib/lib.pro

@@ -149,6 +149,7 @@ SOURCES += rdmarkerview.cpp
 SOURCES += rdmatrix.cpp
 SOURCES += rdmatrixlistmodel.cpp
 SOURCES += rdmblookup.cpp
+SOURCES += rdmeterstrip.cpp
 SOURCES += rdmonitor_config.cpp
 SOURCES += rdnodelistmodel.cpp
 SOURCES += rdnodeslotsmodel.cpp
@@ -334,6 +335,7 @@ HEADERS += rdmarkerview.h
 HEADERS += rdmatrix.h
 HEADERS += rdmatrixlistmodel.h
 HEADERS += rdmblookup.h
+HEADERS += rdmeterstrip.h
 HEADERS += rdmonitor_config.h
 HEADERS += rdnodelistmodel.h
 HEADERS += rdnodeslotsmodel.h

lib/rdmeterstrip.cpp

@@ -0,0 +1,158 @@
+//   rdmeterstrip.cpp
+//
+//   A strip of side-by-side vertical audio meters.
+//
+//   (C) Copyright 2002-2021 Fred Gleason <fredg@paravelsystems.com>
+//
+//   This program is free software; you can redistribute it and/or modify
+//   it under the terms of the GNU Library General Public License 
+//   version 2 as published by the Free Software Foundation.
+//
+//   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, write to the Free Software
+//   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+//
+
+#include <math.h>
+
+#include "rdmeterstrip.h"
+
+RDMeterStrip::RDMeterStrip(QWidget *parent)
+  : RDWidget(parent)
+{
+  d_poll_timer=new QTimer(this);
+  connect(d_poll_timer,SIGNAL(timeout()),this,SLOT(pollData()));
+  d_poll_timer->start(RD_METER_UPDATE_INTERVAL);
+}
+
+
+QSize RDMeterStrip::sizeHint() const
+{
+  return QSize(40*d_types.size(),130);
+}
+
+
+QSizePolicy RDMeterStrip::sizePolicy() const
+{
+  return QSizePolicy(QSizePolicy::Minimum,QSizePolicy::MinimumExpanding);
+}
+
+
+void RDMeterStrip::addInputMeter(int cardnum,int portnum,const QString &label)
+{
+  d_types.push_back(RDMeterStrip::Input);
+  d_card_numbers.push_back(cardnum);
+  d_port_numbers.push_back(portnum);
+
+  AddMeter(cardnum,portnum,label);
+}
+
+
+void RDMeterStrip::addOutputMeter(int cardnum,int portnum,const QString &label)
+{
+  d_types.push_back(RDMeterStrip::Output);
+  d_card_numbers.push_back(cardnum);
+  d_port_numbers.push_back(portnum);
+
+  AddMeter(cardnum,portnum,label);
+}
+
+
+void RDMeterStrip::pollData()
+{
+  short lvls[2];
+  
+  for(int i=0;i<d_types.size();i++) {
+    switch(d_types.at(i)) {
+    case RDMeterStrip::Input:
+      rda->cae()->
+	inputMeterUpdate(d_card_numbers.at(i),d_port_numbers.at(i),lvls);
+      break;
+
+    case RDMeterStrip::Output:
+      rda->cae()->
+	outputMeterUpdate(d_card_numbers.at(i),d_port_numbers.at(i),lvls);
+      break;
+    }
+    d_meters.at(2*i)->setPeakBar(lvls[0]);
+    d_meters.at(2*i+1)->setPeakBar(lvls[1]);
+  }
+}
+
+
+void RDMeterStrip::resizeEvent(QResizeEvent *e)
+{
+  int w=size().width();
+  int h=size().height();
+  int margin_x=(w-sizeHint().width())/2;
+  if(margin_x<0) {
+    margin_x=0;
+  }
+  int slot_w=sizeHint().width()/d_types.size();
+  int meter_w=sizeHint().width()/(d_types.size()*3);
+  
+  for(int i=0;i<d_card_numbers.size();i++) {
+    d_meters.at(2*i)->setGeometry(margin_x+i*slot_w+slot_w/5,
+				  0,
+				  meter_w,
+				  h-20);
+    d_meters.at(2*i+1)->setGeometry(margin_x+i*slot_w+slot_w/2,
+				    0,
+				    meter_w,
+				    h-20);
+    d_labels.at(i)->setGeometry(margin_x+i*slot_w,
+				h-20,
+				slot_w,
+				20);
+  }
+}
+
+
+void RDMeterStrip::paintEvent(QPaintEvent *)
+{
+  QPainter *p=new QPainter(this);
+
+  p->fillRect(0,0,size().width(),size().height(),Qt::black);
+
+  delete p;
+}
+
+
+void RDMeterStrip::AddMeter(int cardnum,int portnum,const QString &label)
+{
+  d_labels.push_back(new QLabel(label,this));
+  d_labels.back()->setAlignment(Qt::AlignCenter);
+  d_labels.back()->setFont(labelFont());
+  d_labels.back()->setStyleSheet("background-color: #000000;color: #FFFFFF");
+  d_labels.back()->show();
+  
+  d_meters.push_back(new RDPlayMeter(RDSegMeter::Up,this));
+  d_meters.back()->setMode(RDSegMeter::Peak);
+  d_meters.back()->setFocusPolicy(Qt::NoFocus);
+  d_meters.back()->setLabel(tr("L"));
+  d_meters.back()->setRange(-4600,-800);
+  d_meters.back()->setHighThreshold(-1600);
+  d_meters.back()->setClipThreshold(-1100);
+  d_meters.back()->setSegmentSize(3);
+  d_meters.back()->setSegmentGap(1);
+  d_meters.back()->show();
+
+  d_meters.push_back(new RDPlayMeter(RDSegMeter::Up,this));
+  d_meters.back()->setMode(RDSegMeter::Peak);
+  d_meters.back()->setFocusPolicy(Qt::NoFocus);
+  d_meters.back()->setLabel(tr("R"));
+  d_meters.back()->setRange(-4600,-800);
+  d_meters.back()->setHighThreshold(-1600);
+  d_meters.back()->setClipThreshold(-1100);
+  d_meters.back()->setSegmentSize(3);
+  d_meters.back()->setSegmentGap(1);
+  d_meters.back()->show();
+
+  setMinimumSize(sizeHint());
+}

lib/rdmeterstrip.h

@@ -0,0 +1,64 @@
+//   rdmeterstrip.h
+//
+//   A strip of side-by-side vertical audio meters.
+//
+//   (C) Copyright 2002-2021 Fred Gleason <fredg@paravelsystems.com>
+//
+//   This program is free software; you can redistribute it and/or modify
+//   it under the terms of the GNU Library General Public License 
+//   version 2 as published by the Free Software Foundation.
+//
+//   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, write to the Free Software
+//   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+//
+
+#ifndef RDMETERSTRIP_H
+#define RDMETERSTRIP_H
+
+#include <QLabel>
+#include <QTimer>
+
+#include <rdplaymeter.h>
+#include <rdwidget.h>
+
+class RDMeterStrip : public RDWidget
+{
+ Q_OBJECT
+ public:
+  RDMeterStrip(QWidget *parent=0);
+  QSize sizeHint() const;
+  QSizePolicy sizePolicy() const;
+
+ public slots:
+  void addInputMeter(int cardnum,int portnum,const QString &label);
+  void addOutputMeter(int cardnum,int portnum,const QString &label);
+
+ private slots:
+  void pollData();
+   
+ protected:
+  enum Type {Input=0,Output=1};
+  void resizeEvent(QResizeEvent *e);
+  void paintEvent(QPaintEvent *);
+
+ private:
+  void AddMeter(int cardnum,int portnum,const QString &label);
+  QList<RDPlayMeter *> d_meters;
+  QList<QLabel *> d_labels;
+  QList<Type> d_types;
+  QList<int> d_card_numbers;
+  QList<int> d_port_numbers;
+  QTimer *d_poll_timer;
+
+  //  QLabel *d_temp_label;
+};
+
+
+#endif  // RDMETERSTRIP_H