Add full screen

mainwindow.h

@@ -20,6 +20,7 @@ class MainWindow : public QMainWindow
     static int socketPair[2];
     QSocketNotifier *socketNotifier;
     QString _lastDir;
+    bool _maximized;
 public:
     MainWindow(QWidget *parent = 0);
     ~MainWindow();
@@ -40,6 +41,7 @@ protected slots:
     void markAndNext();
     void unmarkAndNext();
     void copyMarked();
+    void toggleFullScreen();
     void liveMode(bool active);
     void imageStats(bool imageStats);
     void peakFinder(bool findPeaks);