calculator.hpp

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#pragma once
 
#include <qlabel.h>
#include <qlineedit.h>
#include <qwidget.h>
#include <tcalc/eval.hpp>
 
#include "tcalc_gui/keyboard.hpp"
 
namespace tcalc_gui {
 
class Calculator : public QWidget
{
  Q_OBJECT
 
private:
  QLineEdit* _line_edit;
  QLabel* _label;
  Keyboard* _keyboard;
 
  tcalc::Evaluator _evaluator;
 
public:
  explicit Calculator(QWidget* parent = nullptr);
 
  ~Calculator() override = default;
 
private:
  void _update_input_text(const QString& key);
 
  void _move_input_cursor(int offset);
 
  void _evaluate();
 
private slots: // NOLINT
  void _on_key_clicked(const QString& key);
};
 
}