Calculate the default row height correctly

Ensure that the temporary row that is added to the view on startup is sized correctly before storing that height as the default.

Then use the calculated row height to set the default height for all added rows

mainwindow.cpp

@@ -204,6 +204,7 @@ MainWindow::MainWindow(QWidget *parent) :
     temp.isReceived = true;
     temp.setTimeStamp(QCanBusFrame::TimeStamp(0, 100000000));
     model->addFrame(temp, true);
+    ui->canFramesView->resizeRowToContents(0);      // Resize the row to fit the contents so we get a proper height value
     qApp->processEvents();
     tickGUIUpdate(); //force a GUI refresh so that the row exists to measure
     normalRowHeight = ui->canFramesView->rowHeight(0);
@@ -211,6 +212,8 @@ MainWindow::MainWindow(QWidget *parent) :
     qDebug() << "normal row height = " << normalRowHeight;
     model->clearFrames();
 
+    ui->canFramesView->verticalHeader()->setDefaultSectionSize(normalRowHeight);    // Set the default height for all rows to the height that was calculated
+
     //connect(CANConManager::getInstance(), CANConManager::connectionStatusUpdated, this, MainWindow::connectionStatusUpdated);
     connect(CANConManager::getInstance(), SIGNAL(connectionStatusUpdated(int)), this, SLOT(connectionStatusUpdated(int)));