GSnapshot.h

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#ifndef GSNAPSHOT_H
#define GSNAPSHOT_H
 
#include <string>
 
class TCanvas;
 
class GSnapshot {
public:
   static GSnapshot& Get();
 
   explicit GSnapshot(const char* snapshot_dir = nullptr);
   GSnapshot(const GSnapshot&)                = default;
   GSnapshot(GSnapshot&&) noexcept            = default;
   GSnapshot& operator=(const GSnapshot&)     = default;
   GSnapshot& operator=(GSnapshot&&) noexcept = default;
   ~GSnapshot()                               = default;
 
   void Snapshot(TCanvas* can = nullptr);
 
private:
   std::string fSnapshotDir;
   bool        fCanWriteHere;
};
 
extern GSnapshot gSnapshot;
 
#endif