renderer: improved code flow

app/common/timerange.cpp

@@ -176,6 +176,13 @@ void TimeRange::normalize()
   length_ = out_ - in_;
 }
 
+void TimeRangeList::insert(const TimeRangeList &list_to_add)
+{
+  for (auto it=list_to_add.cbegin(); it!=list_to_add.cend(); it++) {
+    insert(*it);
+  }
+}
+
 void TimeRangeList::insert(TimeRange range_to_add)
 {
   // See if list contains this range

app/common/timerange.h

@@ -77,6 +77,7 @@ public:
   {
   }
 
+  void insert(const TimeRangeList &list_to_add);
   void insert(TimeRange range_to_add);
 
   void remove(const TimeRange& remove);
@@ -217,6 +218,16 @@ public:
     *this = TimeRangeListFrameIterator();
   }
 
+  void insert(const TimeRange &range)
+  {
+    list_.insert(range);
+  }
+
+  void insert(const TimeRangeList &list)
+  {
+    list_.insert(list);
+  }
+
 private:
   void UpdateIndexIfNecessary();