TimeTrack.h

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/**********************************************************************
 
  Audacity: A Digital Audio Editor
 
  TimeTrack.h
 
  Dr William Bland
 
**********************************************************************/
 
#ifndef __AUDACITY_TIMETRACK__
#define __AUDACITY_TIMETRACK__
 
#include "Track.h"
 
#include <algorithm>
 
class wxRect;
class BoundedEnvelope;
class Ruler;
class ZoomInfo;
struct TrackPanelDrawingContext;
 
class AUDACITY_DLL_API TimeTrack final : public Track {
 
 public:
 
   explicit TimeTrack(const ZoomInfo *zoomInfo);
   TimeTrack(const TimeTrack &orig, double *pT0 = nullptr, double *pT1 = nullptr);
 
   virtual ~TimeTrack();
 
 
   bool SupportsBasicEditing() const override;
 
   Holder PasteInto( AudacityProject & ) const override;
 
   Holder Cut( double t0, double t1 ) override;
   Holder Copy( double t0, double t1, bool forClipboard ) const override;
   void Clear(double t0, double t1) override;
   void Paste(double t, const Track * src) override;
   void Silence(double t0, double t1) override;
   void InsertSilence(double t, double len) override;
 
   // TimeTrack parameters
 
   double GetOffset() const override { return 0.0; }
   void SetOffset(double /* t */) override {}
 
   double GetStartTime() const override { return 0.0; }
   double GetEndTime() const override { return 0.0; }
 
   // XMLTagHandler callback methods for loading and saving
 
   bool HandleXMLTag(const wxChar *tag, const wxChar **attrs) override;
   void HandleXMLEndTag(const wxChar *tag) override;
   XMLTagHandler *HandleXMLChild(const wxChar *tag) override;
   void WriteXML(XMLWriter &xmlFile) const override;
 
   // Lock and unlock the track: you must lock the track before
   // doing a copy and paste between projects.
 
   // bool Lock();
   // bool Unlock();
 
   // Access the track's speed envelope
 
   BoundedEnvelope *GetEnvelope() { return mEnvelope.get(); }
   const BoundedEnvelope *GetEnvelope() const { return mEnvelope.get(); }
 
   // Get/Set the speed-warping range, as percentage of original speed (e.g. 90%-110%)
 
   double GetRangeLower() const;
   double GetRangeUpper() const;
 
   void SetRangeLower(double lower);
   void SetRangeUpper(double upper);
 
   bool GetDisplayLog() const { return mDisplayLog; }
   void SetDisplayLog(bool displayLog) { mDisplayLog = displayLog; }
   bool GetInterpolateLog() const;
   void SetInterpolateLog(bool interpolateLog);
 
   void testMe();
 
   Ruler &GetRuler() const { return *mRuler; }
 
 private:
   void CleanState();
 
   // Identifying the type of track
   TrackKind GetKind() const override { return TrackKind::Time; }
 
   const ZoomInfo  *const mZoomInfo;
   std::unique_ptr<BoundedEnvelope> mEnvelope;
   std::unique_ptr<Ruler> mRuler;
   bool             mDisplayLog;
   bool             mRescaleXMLValues; // needed for backward-compatibility with older project files
 
   void Init(const TimeTrack &orig);
 
   using Holder = std::unique_ptr<TimeTrack>;
 
private:
   Track::Holder Clone() const override;
};
 
 
#endif // __AUDACITY_TIMETRACK__