began large scale restructure

app/window/mainwindow/mainwindow.cpp

@@ -0,0 +1,30 @@
+#include "mainwindow.h"
+
+// Panel objects
+#include "panel/viewer/viewer.h"
+
+olive::MainWindow::MainWindow(QWidget *parent) :
+  QMainWindow(parent)
+{
+  // Create empty central widget - we don't actually want a central widget but some of Qt's docking/undocking fails
+  // without it
+  QWidget* centralWidget = new QWidget(this);
+  centralWidget->setMaximumSize(QSize(0, 0));
+  setCentralWidget(centralWidget);
+
+  // Set tabs to be on top of panels (default behavior is bottom)
+  setTabPosition(Qt::AllDockWidgetAreas, QTabWidget::North);
+
+  // Allow panels to be tabbed within each other
+  setDockNestingEnabled(true);
+
+  // TODO Use settings data to create panels and restore state if they exist
+  ViewerPanel* viewer_panel = new ViewerPanel(this);
+  addDockWidget(Qt::TopDockWidgetArea, viewer_panel);
+  ViewerPanel* viewer_panel2 = new ViewerPanel(this);
+  addDockWidget(Qt::TopDockWidgetArea, viewer_panel2);
+  ViewerPanel* viewer_panel3 = new ViewerPanel(this);
+  addDockWidget(Qt::BottomDockWidgetArea, viewer_panel3);
+  ViewerPanel* viewer_panel4 = new ViewerPanel(this);
+  addDockWidget(Qt::BottomDockWidgetArea, viewer_panel4);
+}