Show gepetto logo when no dock widget is visible.

include/gepetto/gui/mainwindow.hh

@@ -219,6 +219,7 @@ signals:
         void openLoadRobotDialog ();
         void openLoadEnvironmentDialog ();
         void activateCollision(bool activate);
+        void dockVisibilityChanged(bool visible);
 
         void handleWorkerDone (int id);
 

include/gepetto/gui/ui/mainwindow.ui

@@ -28,6 +28,9 @@
      <verstretch>0</verstretch>
     </sizepolicy>
    </property>
+   <property name="contextMenuPolicy">
+    <enum>Qt::NoContextMenu</enum>
+   </property>
    <property name="autoFillBackground">
     <bool>false</bool>
    </property>

src/gui/mainwindow.cc

@@ -115,11 +115,13 @@ namespace gepetto {
       dock->adjustSize();
       ui_->menuWindow->addAction(dock->toggleViewAction ());
       actionSearchBar_->addAction(dock->toggleViewAction ());
+      connect(dock,SIGNAL(visibilityChanged(bool)),SLOT(dockVisibilityChanged(bool)));
     }
 
     void MainWindow::removeDockWidget(QDockWidget *dock)
     {
       ui_->menuWindow->removeAction(dock->toggleViewAction());
+      disconnect(dock);
       QMainWindow::removeDockWidget(dock);
     }
 
@@ -249,7 +251,6 @@ namespace gepetto {
       if (osgWindows_.empty()) {
         // This OSGWidget should be the central view
         centralWidget_ = osgWidget;
-        setCentralWidget(0);
 #if GEPETTO_GUI_HAS_PYTHONQT
         pythonWidget_->addToContext("osg", centralWidget_);
 #endif
@@ -391,6 +392,21 @@ namespace gepetto {
       }
     }
 
+    void MainWindow::dockVisibilityChanged(bool visible)
+    {
+      QWidget* cw = QMainWindow::centralWidget();
+      if (visible && cw->isVisible())
+        cw->hide();
+      else {
+        const QObjectList& objs = children();
+        foreach(const QObject* obj, objs) {
+          const QDockWidget* dock = qobject_cast<const QDockWidget*>(obj);
+          if (dock != 0 && dock->isVisible()) return;
+        }
+        cw->show();
+      }
+    }
+
     void MainWindow::setupInterface()
     {
       // Menu "Window"