I have an app with a QTabWidget containing 5 tabs. Each tab has 1 QGraphicsView.
The first time i run the application, the fitInView function only works on active QGraphicsView, after I've change to all tabs, the fitInView function keeps working correctly.
It's like i have to use it at least 1 time with each tab active for got it working correctly.
Any idea what could be wrong? Something about fitInView or QGraphicsView that i should to know?
It's a lot of code, i don't know what to copy/paste >_<, this is the code used each time an image is loaded (this is the code of 1 of the 5 QGraphicsView, all are almost the same):


Header File
Qt Code: 
  1. QStringList flyerList;
  2. QGraphicsScene FlyerScene;
  4. QTimer flyerTimer;
  5. int FlyerSwapPos;
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Fragment of cpp file:
Qt Code: 
  1. void RetroSuite::MEDIA_Flyer() { 
  2.     FlyerScene.clear();
  3.     flyerList.clear();
  4.  
  5.     QSettings inisets(QString("data/systemdata/%1/%2.ini").arg(CurrType).arg(CurrSID), QSettings::IniFormat);
  6.     QString folder = inisets.value("Flyer/Folder").toString();
  7.  
  8.     if (!folder.isEmpty() && folder.length() > 3) {
  9.  
  10.         QDirIterator iter(folder, QDir::Files | QDir::NoDotAndDotDot, QDirIterator::Subdirectories);
  11.         while (iter.hasNext()) {
  12.             QFileInfo nextfile = iter.next();
  13.             if ((CurrGameName.contains(nextfile.completeBaseName()) && CurrType != "Arcade") || (nextfile.completeBaseName() == ( CurrLaunchName) && CurrType == "Arcade")) {
  14.                 flyerList << nextfile.absoluteFilePath();
  15.               }
  16.           }
  17.         if (flyerList.count() > 0) {
  18.  
  19.             flyerItem =  FlyerScene.addPixmap(QPixmap());
  20.             flyerItem->setPixmap(QPixmap(flyerList.at(0)));
  21.             ui->flyerView->setFlyerItem(flyerItem);
  22.  
  23.             FlyerScene.setSceneRect(QPixmap(flyerList.at(0)).rect());
  24.  
  25.             FlyerSwapPos = 0;
  26.  
  27.             if (inisets.value("Flyer/Fit").toBool()) {
  28.                 ui->flyerView->setTransform(QTransform());
  29.                 ui->flyerView->fitInView(flyerItem, Qt::KeepAspectRatio);
  30.                 ui->flyerView->show();
  31.  
  32.               } else if (inisets.value("Flyer/Scaled").toBool()) {
  33.                 ui->flyerView->resetTransform();
  34.  
  35.                 switch( inisets.value("Flyer/SizeScale").toInt() ) {
  36.                   case 0:
  37.                     ui->flyerView->scale(0.1, 0.1);
  38.                     break;
  39.                   case 1:
  40.                     ui->flyerView->scale(0.2, 0.2);
  41.                     break;
  42.                   case 2:
  43.                     ui->flyerView->scale(0.3, 0.3);
  44.                     break;
  45.                   case 3:
  46.                     ui->flyerView->scale(0.4, 0.4);
  47.                     break;
  48.                   case 4:
  49.                     ui->flyerView->scale(0.5, 0.5);
  50.                     break;
  51.                   case 5:
  52.                     ui->flyerView->scale(0.6, 0.6);
  53.                     break;
  54.                   case 6:
  55.                     ui->flyerView->scale(0.7, 0.7);
  56.                     break;
  57.                   case 7:
  58.                     ui->flyerView->scale(0.8, 0.8);
  59.                     break;
  60.                   case 8:
  61.                     ui->flyerView->scale(0.9, 0.9);
  62.                     break;
  63.                   case 9:
  64.                     ui->flyerView->scale(1.0, 1.0);
  65.                     break;
  66.  
  67.                   }
  68.               } else  {
  69.                 ui->flyerView->setTransform(QTransform());
  70.               }
  71.           }
  72.         if (inisets.value("Flyer/SwapAuto").toBool()) {
  73.             flyerTimer->start( inisets.value("Flyer/SwapTimer").toInt() * 1000 );
  74.           }
  75.       }
  76.  
  77.  
  78. }
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I'm really lost with this, i have no idea what is wrong.