LinearUpdater.h

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/**********************************************************************
 
  Audacity: A Digital Audio Editor
 
  LinearUpdater.h
 
  Dominic Mazzoni
  Michael Papadopoulos split from Ruler.h
 
**********************************************************************/
 
#ifndef __AUDACITY_LINEAR_UPDATER__
#define __AUDACITY_LINEAR_UPDATER__
 
#include "GeneratedUpdater.h"
 
class ZoomInfo;
 
class LinearUpdater final : public GeneratedUpdater {
public:
   LinearUpdater() = default;
 
   // Always has default data values
   static const LinearUpdater &Instance();
 
   ~LinearUpdater() override;
 
   void Update(
      wxDC& dc, const Envelope* envelope,
      UpdateOutputs& allOutputs, const RulerStruct& context
   ) const override;
 
   void SetData(const ZoomInfo *pZoomInfo = nullptr, int leftOffset = 0)
   {
      mpZoomInfo = pZoomInfo;
      mLeftOffset = 0;
   }
 
private:
   const ZoomInfo *mpZoomInfo{};
   int mLeftOffset{};
};
 
#endif