enhance tged somewhat to attempt to main the scrolled listview position;

src/tged/TGEdMain.h

@@ -35,6 +35,44 @@
 //  Externs
 // ---------------------------------------------------------------------------
 
+/**
+ * bryanb: This is some low-down, dirty, C++ hack-o-ramma.
+ */
+
+/**
+ * @brief Implements RTTI type defining.
+ * @typedef Tag 
+ */
+template<typename Tag>
+struct RTTIResult {
+    typedef typename Tag::type type;
+    static type ptr;
+};
+
+template<typename Tag>
+typename RTTIResult<Tag>::type RTTIResult<Tag>::ptr;
+
+/**
+ * @brief Implements nasty hack to access private members of a class.
+ * @typedef Tag 
+ * @typedef TypePtr 
+ */
+template<typename Tag, typename Tag::type TypePtr>
+struct HackTheGibson : RTTIResult<Tag> {
+    /* fill it ... */
+    struct filler {
+        filler() { RTTIResult<Tag>::ptr = TypePtr; }
+    };
+    static filler fillerObj;
+};
+
+template<typename Tag, typename Tag::type TypePtr>
+typename HackTheGibson<Tag, TypePtr>::filler HackTheGibson<Tag, TypePtr>::fillerObj;
+
+// ---------------------------------------------------------------------------
+//  Externs
+// ---------------------------------------------------------------------------
+
 /** @brief  */
 extern std::string g_progExe;
 /** @brief  */

src/tged/TGListWnd.h

@@ -23,6 +23,11 @@
 #include <final/final.h>
 using namespace finalcut;
 
+struct PrivateFListViewScrollToY { typedef void(FListView::*type)(int); };
+template class HackTheGibson<PrivateFListViewScrollToY, &FListView::scrollToY>;
+struct PrivateFListViewIteratorFirst { typedef FListViewIterator FListView::*type; };
+template class HackTheGibson<PrivateFListViewIteratorFirst, &FListView::first_visible_line>;
+
 // ---------------------------------------------------------------------------
 //  Constants
 // ---------------------------------------------------------------------------
@@ -94,6 +99,15 @@ public:
         auto entry = g_tidLookups->groupVoice()[0U];
         m_selected = entry;
 
+        // bryanb: HACK -- use HackTheGibson to access the private current listview iterator to get the scroll position
+        /*
+         * This uses the RTTI hack to access private members on FListView; and this code *could* break as a consequence.
+         */
+        int firstScrollLinePos = 0;
+        if (m_listView.getCount() > 0) {
+            firstScrollLinePos = (m_listView.*RTTIResult<PrivateFListViewIteratorFirst>::ptr).getPosition();
+        }
+
         m_listView.clear();
         for (auto entry : g_tidLookups->groupVoice()) {
             // pad TGs properly
@@ -114,6 +128,16 @@ public:
             m_listView.insert(line);
         }
 
+        // bryanb: HACK -- use HackTheGibson to access the private set scroll Y to set the scroll position
+        /*
+         * This uses the RTTI hack to access private members on FListView; and this code *could* break as a consequence.
+         */
+        if (firstScrollLinePos > m_listView.getCount())
+            firstScrollLinePos = 0;
+        if (firstScrollLinePos > 0 && m_listView.getCount() > 0) {
+            (m_listView.*RTTIResult<PrivateFListViewScrollToY>::ptr)(firstScrollLinePos);
+        }
+
         // generate dialog title        
         uint32_t len = g_tidLookups->groupVoice().size();
         std::stringstream ss;