TimeTrackEditing.cpp

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/*  SPDX-License-Identifier: GPL-2.0-or-later */
/*!********************************************************************
 
  Audacity: A Digital Audio Editor
 
  @file TimeTrackEditing.cpp
 
  PaulLicameli
 
**********************************************************************/
#include "Envelope.h"
#include "TempoChange.h"
#include "TimeTrack.h"
 
using OnTimeTrackProjectTempoChange = OnProjectTempoChange::Override<TimeTrack>;
DEFINE_ATTACHED_VIRTUAL_OVERRIDE(OnTimeTrackProjectTempoChange) {
   return [](TimeTrack &track,
      const std::optional<double> &oldTempo, double newTempo)
   {
      if (!oldTempo.has_value())
         return;
      const auto ratio = *oldTempo / newTempo;
      track.GetEnvelope()->RescaleTimesBy(ratio);
   };
}