ModificationContext.h

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/*

             *
            ***
           *****
   *********************       Mercenaries Engineering SARL
     *****************              Copyright (C) 2020
       *************
         *********        http://www.mercenaries-engineering.com
        ***********
       ****     ****
      **           **

*/
#pragma once

#include "Export.h"

namespace maquina
{
  class MAQUINA_EXPORT ModificationContext
  {
  public:
    enum class SetValueMode
    {
      no_undo,   
      undoable,  
      layer,     
      animated,  
    };

    ModificationContext(SetValueMode set_value_mode, float frame = ModificationContext::current_frame, bool layer_value = false);

    static SetValueMode lower(SetValueMode a, SetValueMode b);
    static SetValueMode higher(SetValueMode a, SetValueMode b);

    float frame() const;

    bool is_current_frame() const;

    SetValueMode set_value_mode;  
    bool layer_value;  
  private:
    float _frame;      // The frame at which the value should be set or ModificationContext::current_frame for the current frame

  public:
    const static ModificationContext animated;  
    const static ModificationContext layer;     
    const static ModificationContext undoable;  
    const static ModificationContext no_undo;   
    const static float current_frame;
  };

  inline bool ModificationContext::is_current_frame() const
  {
    return _frame == current_frame;
  }

}