NoteTrackEditing.cpp File Reference

#include "WrapAllegro.h"
#include "NoteTrack.h"
#include "TempoChange.h"

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Typedefs
using	OnNoteTrackProjectTempoChange = OnProjectTempoChange::Override< NoteTrack >

Functions
	DEFINE_ATTACHED_VIRTUAL_OVERRIDE (OnNoteTrackProjectTempoChange)

Detailed Description

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Audacity: A Digital Audio Editor

PaulLicameli

Definition in file NoteTrackEditing.cpp.

Typedef Documentation

OnNoteTrackProjectTempoChange

using OnNoteTrackProjectTempoChange = OnProjectTempoChange::Override<NoteTrack>

Definition at line 15 of file NoteTrackEditing.cpp.

Function Documentation

DEFINE_ATTACHED_VIRTUAL_OVERRIDE()

DEFINE_ATTACHED_VIRTUAL_OVERRIDE

(

OnNoteTrackProjectTempoChange

)

Definition at line 16 of file NoteTrackEditing.cpp.

                                                                {
   return [](NoteTrack &track,
      const std::optional<double> &oldTempo, double newTempo)
   {
      if (!oldTempo.has_value())
         return;
      const auto ratio = *oldTempo / newTempo;
      auto& seq = track.GetSeq();
      seq.convert_to_beats();
      const auto b1 = seq.get_dur();
      seq.convert_to_seconds();
      const auto newDuration = seq.get_dur() * ratio;
      seq.stretch_region(0, b1, newDuration);
      seq.set_real_dur(newDuration);
   };
}

References NoteTrack::GetSeq().

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