Added ability for sub windows to get frames much more rapidly than

before. Decoupled SerialWorker from MainWindow a bit and refactored
things.

mainwindow.cpp

@@ -69,7 +69,7 @@ MainWindow::MainWindow(QWidget *parent) :
     connect(&serialWorkerThread, &QThread::finished, worker, &QObject::deleteLater);
     connect(&serialWorkerThread, &QThread::started, worker, &SerialWorker::run); //setup timers within the proper thread
     connect(this, &MainWindow::sendSerialPort, worker, &SerialWorker::setSerialPort, Qt::QueuedConnection);
-    connect(worker, &SerialWorker::frameUpdateTick, this, &MainWindow::gotFrames, Qt::QueuedConnection);
+    connect(worker, &SerialWorker::frameUpdateRapid, this, &MainWindow::gotFrames, Qt::QueuedConnection);
     connect(this, &MainWindow::updateBaudRates, worker, &SerialWorker::updateBaudRates, Qt::QueuedConnection);
     connect(this, &MainWindow::sendCANFrame, worker, &SerialWorker::sendFrame, Qt::QueuedConnection);
     connect(worker, &SerialWorker::connectionSuccess, this, &MainWindow::connectionSucceeded, Qt::QueuedConnection);
@@ -101,6 +101,7 @@ MainWindow::MainWindow(QWidget *parent) :
     dbcHandler = new DBCHandler;
     bDirty = false;
     inhibitFilterUpdate = false;
+    rxFrames = 0;
 
     model->setDBCHandler(dbcHandler);
 
@@ -150,6 +151,13 @@ MainWindow::MainWindow(QWidget *parent) :
     ui->lbFPS->setText("0");
     ui->lbNumFrames->setText("0");
 
+    connect(&updateTimer, &QTimer::timeout, this, &MainWindow::tickGUIUpdate);
+    updateTimer.setInterval(250);
+    updateTimer.start();
+
+    elapsedTime = new QTime;
+    elapsedTime->start();
+
     isConnected = false;
     allowCapture = true;
 
@@ -266,6 +274,8 @@ MainWindow::~MainWindow()
         delete udsScanWindow;
     }
 
+    delete elapsedTime;
+
     delete ui;
     delete dbcHandler;
     model->clearFrames();
@@ -493,20 +503,30 @@ void MainWindow::filterClearAll()
     model->setAllFilters(false);
 }
 
-//most of the work is handled elsewhere. Need only to update the # of frames
-//and maybe auto scroll
-void MainWindow::gotFrames(int FPS, int framesSinceLastUpdate)
+void MainWindow::tickGUIUpdate()
 {
+    framesPerSec += rxFrames * 1000 / elapsedTime->elapsed() - (framesPerSec / 4);
+    elapsedTime->restart();
+    model->sendBulkRefresh(rxFrames);
+
     ui->lbNumFrames->setText(QString::number(model->rowCount()));
     if (ui->cbAutoScroll->isChecked()) ui->canFramesView->scrollToBottom();
-    ui->lbFPS->setText(QString::number(FPS));
-    if (framesSinceLastUpdate > 0)
+    ui->lbFPS->setText(QString::number(framesPerSec / 4));
+    if (rxFrames > 0)
     {
         bDirty = true;
-        emit framesUpdated(framesSinceLastUpdate); //anyone care that frames were updated?
+        emit framesUpdated(rxFrames); //anyone care that frames were updated?
     }
 
     if (model->needsFilterRefresh()) updateFilterList();
+
+    rxFrames = 0;
+}
+
+void MainWindow::gotFrames(int framesSinceLastUpdate)
+{
+    rxFrames += framesSinceLastUpdate;
+    emit frameUpdateRapid(framesSinceLastUpdate);
 }
 
 void MainWindow::addFrameToDisplay(CANFrame &frame, bool autoRefresh = false)