Fixed a bug with shoing and hiding empty splitters, added some pictures to main page

src/DockSplitter.cpp

@@ -21,6 +21,22 @@ CDockSplitter::~CDockSplitter()
 	qDebug() << "~CDockSplitter";
 }
 
+
+//============================================================================
+bool CDockSplitter::hasVisibleContent() const
+{
+	// TODO Cache or precalculate this to speed up
+	for (int i = 0; i < count(); ++i)
+	{
+		if (widget(i)->isVisibleTo(this))
+		{
+			return true;
+		}
+	}
+
+	return false;
+}
+
 } // namespace ads
 
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