Toolbar/Menu update when Compare Pane Show/Hide

.. if the compare pane is automatically shown or hidden
   due to the user dragging and dropping the menu and toolbar
   got out of sync with the status of the widget.

src/TabView.cpp

@@ -26,6 +26,7 @@
 #include "GcWindowRegistry.h"
 #include "TrainDB.h"
 #include "MetricAggregator.h"
+#include "MainWindow.h"
 
 #include "Settings.h"
 
@@ -134,6 +135,13 @@ TabView::setBottom(QWidget *widget)
     mainSplitter->setStretchFactor(1,1);
 }
 
+void 
+TabView::dragEvent(bool x)
+{
+    setShowBottom(x);
+    context->mainWindow->setToolButtons(); // toolbuttons reflect show/hide status
+}
+
 // hide and show bottom - but with a little animation ...
 void
 TabView::setShowBottom(bool x) 

src/TabView.h

@@ -66,6 +66,7 @@ class TabView : public QWidget
         bool isTiled() const { return _tiled; }
 
         // bottom
+        void dragEvent(bool); // showbottom on drag event
         void setShowBottom(bool x);
         bool isShowBottom() { if (bottom_) return bottom_->isVisible(); return false; }
         bool hasBottom() { return (bottom_!=NULL); }
@@ -152,7 +153,7 @@ protected:
         if (event->mimeData()->formats().contains("application/x-qabstractitemmodeldatalist")) {
             if (tabView->hasBottom() && tabView->isShowBottom() == false) {
                 showForDrag = true;
-                tabView->setShowBottom(true);
+                tabView->dragEvent(true);
             }
             event->acceptProposedAction(); // always accept for this mimeData type
                                            // so we continue to get the leave events we ignore (!)
@@ -170,7 +171,7 @@ protected:
 
         if (showForDrag == true && !underMouse() && tabView->hasBottom() && tabView->isShowBottom() == true) {
             showForDrag = false;
-            tabView->setShowBottom(false);
+            tabView->dragEvent(false);
         }
     }