began some rewrites to timeline drawing

app/widget/timebased/timebasedview.cpp

@@ -70,7 +70,7 @@ void TimeBasedView::TimebaseChangedEvent(const rational &)
   viewport()->update();
 }
 
-void TimeBasedView::EnableSnap(const QList<rational> &points)
+void TimeBasedView::EnableSnap(const QVector<rational> &points)
 {
   snapped_ = true;
   snap_time_ = points;

app/widget/timebased/timebasedview.h

@@ -38,7 +38,7 @@ public:
 
   static const double kMaximumScale;
 
-  void EnableSnap(const QList<rational>& points);
+  void EnableSnap(const QVector<rational> &points);
   void DisableSnap();
   bool IsSnapped() const
   {
@@ -106,7 +106,7 @@ private:
   QGraphicsScene scene_;
 
   bool snapped_;
-  QList<rational> snap_time_;
+  QVector<rational> snap_time_;
 
   rational end_time_;
 

app/widget/timebased/timebasedwidget.cpp

@@ -28,6 +28,7 @@
 #include "config/config.h"
 #include "core.h"
 #include "project/item/sequence/sequence.h"
+#include "widget/timelinewidget/timelineundo.h"
 
 namespace olive {