From 89d8fe18b1ef774d59238ac660bb7b472b18aff9 Mon Sep 17 00:00:00 2001
From: Paul Licameli <paul.licameli@audacityteam.org>
Date: Wed, 10 Jan 2018 13:20:31 -0500
Subject: [PATCH] Define WaveTrack::Reinit()

---
 src/WaveTrack.cpp | 27 +++++++++++++++++++++++++++
 src/WaveTrack.h   |  6 ++++++
 2 files changed, 33 insertions(+)

diff --git a/src/WaveTrack.cpp b/src/WaveTrack.cpp
index 5eb7c9e80..bb581b6d8 100644
--- a/src/WaveTrack.cpp
+++ b/src/WaveTrack.cpp
@@ -163,6 +163,33 @@ void WaveTrack::Init(const WaveTrack &orig)
    mDisplayLocationsCache.clear();
 }
 
+void WaveTrack::Reinit(const WaveTrack &orig)
+{
+   Init(orig);
+
+   {
+      auto &settings = orig.mpSpectrumSettings;
+      if (settings)
+         mpSpectrumSettings = std::make_unique<SpectrogramSettings>(*settings);
+      else
+         mpSpectrumSettings.reset();
+   }
+
+   {
+      auto &settings = orig.mpWaveformSettings;
+      if (settings)
+         mpWaveformSettings = std::make_unique<WaveformSettings>(*settings);
+      else
+         mpWaveformSettings.reset();
+   }
+
+   this->SetOffset(orig.GetOffset());
+
+#ifdef EXPERIMENTAL_OUTPUT_DISPLAY
+   // To do:  mYv, mHeightV, mPerY, mVirtualStereo
+#endif
+}
+
 void WaveTrack::Merge(const Track &orig)
 {
    if (orig.GetKind() == Wave)
diff --git a/src/WaveTrack.h b/src/WaveTrack.h
index 17fb1e3f9..d461f4b53 100644
--- a/src/WaveTrack.h
+++ b/src/WaveTrack.h
@@ -74,6 +74,12 @@ class AUDACITY_DLL_API WaveTrack final : public PlayableTrack {
 
    void Init(const WaveTrack &orig);
 
+public:
+   // overwrite data excluding the sample sequence but including display
+   // settings
+   void Reinit(const WaveTrack &orig);
+
+private:
    Track::Holder Duplicate() const override;
 
    friend class TrackFactory;