timeline: updated selection changes for trimming and rippling

app/widget/timelinewidget/timelinewidgetselections.cpp

@@ -56,4 +56,22 @@ void TimelineWidgetSelections::ShiftTracks(Timeline::TrackType type, int diff)
   }
 }
 
+void TimelineWidgetSelections::TrimIn(const rational &diff)
+{
+  for (auto it=this->begin(); it!=this->end(); it++) {
+    for (auto it2=it.value().begin(); it2!=it.value().end(); it2++) {
+      (*it2).set_in((*it2).in() + diff);
+    }
+  }
+}
+
+void TimelineWidgetSelections::TrimOut(const rational &diff)
+{
+  for (auto it=this->begin(); it!=this->end(); it++) {
+    for (auto it2=it.value().begin(); it2!=it.value().end(); it2++) {
+      (*it2).set_out((*it2).out() + diff);
+    }
+  }
+}
+
 OLIVE_NAMESPACE_EXIT