timeline: added more signalling when tracklists change

Fixes #1591
2021-04-27 10:08:04 +10:00
parent a0200f2286
commit 52076b19fc
8 changed files with 47 additions and 8 deletions
@@ -309,9 +309,11 @@ void Track::Retranslate()

 void Track::SetIndex(const int &index)
 {
+  int old = index_;
+
  index_ = index;

-  emit IndexChanged(index);
+  emit IndexChanged(old, index_);
 }

 Block *Track::BlockContainingTime(const rational &time) const
@@ -388,7 +388,7 @@ signals:
  /**
   * @brief Signal emitted when the index has changed
   */
-  void IndexChanged(int i);
+  void IndexChanged(int old, int now);

  /**
   * @brief Signal emitted when preview (waveform) has changed and UI should be updated