Method updateTrackOffsets

pj_app/src/SourceTimelineController.cpp:199–212

}

void SourceTimelineController::updateTrackOffsets() {
  // Refresh ONLY the cached tracks' offsets from the SessionManager and re-feed
  // them. Used on the offset-only path (displayOffsetChanged from a live drag /
  // align / reset): the raw time ranges, names, colors, and order are unchanged,
  // so this avoids rebuildTracks()'s per-dataset datasetRawTimeRange catalog
  // scan. The widget keys its extent/auto-zoom on the (unchanged) raw bounds, so
  // re-feeding never resets the view.
  SessionManager& sessions = session_->sessionManager();
  for (TimelineTrack& track : tracks_) {
    // Align-only offset (see rebuildTracks): the global frame never moves a bar.
    track.offset_ns = static_cast<qint64>(sessions.sourceDisplayOffset(static_cast<DatasetId>(track.id)).value.count());
  }
  widget_->setTracks(tracks_);
}

void SourceTimelineController::alignStarts() {
  applyAlignment(AlignMode::kStarts);