began some rewrites to timeline drawing

app/widget/projectexplorer/projectexplorer.cpp

@@ -460,13 +460,13 @@ void ProjectExplorer::set_root(Item *item)
   tree_view_->setRootIndex(index);
 }
 
-QList<Item *> ProjectExplorer::SelectedItems() const
+QVector<Item *> ProjectExplorer::SelectedItems() const
 {
   // Determine which view is active and get its selected indexes
   QModelIndexList index_list = CurrentView()->selectionModel()->selectedRows();
 
   // Convert indexes to item objects
-  QList<Item*> selected_items;
+  QVector<Item*> selected_items;
 
   for (int i=0;i<index_list.size();i++) {
     const QModelIndex& index = index_list.at(i);
@@ -488,7 +488,7 @@ Folder *ProjectExplorer::GetSelectedFolder() const
   Folder* folder = nullptr;
 
   // Get the selected items from the panel
-  QList<Item*> selected_items = SelectedItems();
+  QVector<Item*> selected_items = SelectedItems();
 
   // Heuristic for finding the selected folder:
   //
@@ -565,7 +565,7 @@ QVector<MediaInput *> ProjectExplorer::GetMediaNodesUsingFootage(Footage *item)
 
 void ProjectExplorer::DeleteSelected()
 {
-  QList<Item*> selected = SelectedItems();
+  QVector<Item*> selected = SelectedItems();
 
   if (selected.isEmpty()) {
     return;

app/widget/projectexplorer/projectexplorer.h

@@ -59,7 +59,7 @@ public:
 
   void set_root(Item* item);
 
-  QList<Item*> SelectedItems() const;
+  QVector<Item *> SelectedItems() const;
 
   /**
    * @brief Use a heuristic to determine which (if any) folder is selected
@@ -157,7 +157,7 @@ private:
 
   QTimer rename_timer_;
 
-  QList<Item*> context_menu_items_;
+  QVector<Item*> context_menu_items_;
 
 private slots:
   void ItemClickedSlot(const QModelIndex& index);