// A state-keeping class used with MatrixReader. Keeps track of which column is active,
// switches between them.

#ifndef _MATRIX_H_
#define _MATRIX_H_

#include <Arduino.h>

class Matrix {
 public:
  Matrix(uint8_t *columns, bool inverted=true);
  void Activate(uint8_t column);

 private:
  void _enable(uint8_t pin);
  void _disable(uint8_t pin);
  
  uint8_t* columns;
  uint8_t active_pin;
  uint8_t num_columns;
  bool inverted;
};

#endif