Add simple live mode that show last image added to directory

mainwindow.cpp

@@ -34,6 +34,8 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent),
     QMenu *fileMenu = new QMenu(tr("File"), this);
     fileMenu->addAction(tr("Open"), this, SLOT(openFile()), QKeySequence("Ctrl+O"));
     fileMenu->addAction(tr("Copy marked files"), this, SLOT(copyMarked()));
+    QAction *liveModeAction = fileMenu->addAction(tr("Live mode"), this, SLOT(liveMode(bool)));
+    liveModeAction->setCheckable(true);
     fileMenu->addAction(tr("Exit"), this, SLOT(close()));
     menuBar()->addMenu(fileMenu);
 
@@ -225,6 +227,11 @@ void MainWindow::copyMarked()
     }
 }
 
+void MainWindow::liveMode(bool active)
+{
+    m_ringList->setLiveMode(active);
+}
+
 void MainWindow::updateWindowTitle()
 {
     ImagePtr ptr = m_ringList->currentImage();