TrackSelectHandle.h

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/**********************************************************************
 
Audacity: A Digital Audio Editor
 
TrackSelectHandle.h
 
Paul Licameli split from TrackPanel.cpp
 
**********************************************************************/
 
#ifndef __AUDACITY_TRACK_SELECT_HANDLE__
#define __AUDACITY_TRACK_SELECT_HANDLE__
 
#include "../../UIHandle.h"
 
class wxMouseEvent;
class Track;
 
class TrackSelectHandle final : public UIHandle
{
   TrackSelectHandle(const TrackSelectHandle&) = delete;
 
public:
   explicit TrackSelectHandle( const std::shared_ptr<Track> &pTrack );
 
   TrackSelectHandle &operator=(const TrackSelectHandle&) = default;
 
   static UIHandlePtr HitAnywhere
      (std::weak_ptr<TrackSelectHandle> &holder,
       const std::shared_ptr<Track> &pTrack);
 
   virtual ~TrackSelectHandle();
 
   std::shared_ptr<const Track> FindTrack() const override;
 
   Result Click
      (const TrackPanelMouseEvent &event, AudacityProject *pProject) override;
 
   Result Drag
      (const TrackPanelMouseEvent &event, AudacityProject *pProject) override;
 
   HitTestPreview Preview
      (const TrackPanelMouseState &state, AudacityProject *pProject)
      override;
 
   Result Release
      (const TrackPanelMouseEvent &event, AudacityProject *pProject,
       wxWindow *pParent) override;
 
   Result Cancel(AudacityProject *) override;
 
   bool StopsOnKeystroke() override { return true; }
 
private:
   std::shared_ptr<Track> mpTrack;
   bool mClicked{};
 
   // JH: if the user is dragging a track, at what y
   //   coordinate should the dragging track move up or down?
   int mMoveUpThreshold {};
   int mMoveDownThreshold {};
   int mRearrangeCount {};
 
   void CalculateRearrangingThresholds(
      const wxMouseEvent & event, AudacityProject *project);
};
 
#endif