text: // Copyright (c) 2011-2020 The Bitcoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #ifndef BARICOIN_QT_BARICOINUNITS_H
  #define BARICOIN_QT_BARICOINUNITS_H
  
  #include <amount.h>
  
  #include <QAbstractListModel>
  #include <QString>
  
  // U+2009 THIN SPACE = UTF-8 E2 80 89
  #define REAL_THIN_SP_CP 0x2009
  #define REAL_THIN_SP_UTF8 "\xE2\x80\x89"
  
  // QMessageBox seems to have a bug whereby it doesn't display thin/hair spaces
  // correctly.  Workaround is to display a space in a small font.  If you
  // change this, please test that it doesn't cause the parent span to start
  // wrapping.
  #define HTML_HACK_SP "<span style='white-space: nowrap; font-size: 6pt'> </span>"
  
  // Define THIN_SP_* variables to be our preferred type of thin space
  #define THIN_SP_CP   REAL_THIN_SP_CP
  #define THIN_SP_UTF8 REAL_THIN_SP_UTF8
  #define THIN_SP_HTML HTML_HACK_SP
  
  /** Baricoin unit definitions. Encapsulates parsing and formatting
     and serves as list model for drop-down selection boxes.
  */
  class BaricoinUnits: public QAbstractListModel
  {
      Q_OBJECT
  
  public:
      explicit BaricoinUnits(QObject *parent);
  
      /** Baricoin units.
        @note Source: https://en.bitcoin.it/wiki/Units . Please add only sensible ones
       */
      enum Unit
      {
          BARI,
          mBARI,
          uBARI,
          SAT
      };
  
      enum SeparatorStyle
      {
          separatorNever,
          separatorStandard,
          separatorAlways
      };
  
      //! @name Static API
      //! Unit conversion and formatting
      ///@{
  
      //! Get list of units, for drop-down box
      static QList<Unit> availableUnits();
      //! Is unit ID valid?
      static bool valid(int unit);
      //! Long name
      static QString longName(int unit);
      //! Short name
      static QString shortName(int unit);
      //! Longer description
      static QString description(int unit);
      //! Number of Satoshis (1e-8) per unit
      static qint64 factor(int unit);
      //! Number of decimals left
      static int decimals(int unit);
      //! Format as string
      static QString format(int unit, const CAmount& amount, bool plussign=false, SeparatorStyle separators=separatorStandard);
      //! Format as string (with unit)
      static QString formatWithUnit(int unit, const CAmount& amount, bool plussign=false, SeparatorStyle separators=separatorStandard);
      //! Format as HTML string (with unit)
      static QString formatHtmlWithUnit(int unit, const CAmount& amount, bool plussign=false, SeparatorStyle separators=separatorStandard);
      //! Parse string to coin amount
      static bool parse(int unit, const QString &value, CAmount *val_out);
      //! Gets title for amount column including current display unit if optionsModel reference available */
      static QString getAmountColumnTitle(int unit);
      ///@}
  
      //! @name AbstractListModel implementation
      //! List model for unit drop-down selection box.
      ///@{
      enum RoleIndex {
          /** Unit identifier */
          UnitRole = Qt::UserRole
      };
      int rowCount(const QModelIndex &parent) const;
      QVariant data(const QModelIndex &index, int role) const;
      ///@}
  
      static QString removeSpaces(QString text)
      {
          text.remove(' ');
          text.remove(QChar(THIN_SP_CP));
          return text;
      }
  
      //! Return maximum number of base units (Satoshis)
      static CAmount maxMoney();
  
  private:
      QList<BaricoinUnits::Unit> unitlist;
  };
  typedef BaricoinUnits::Unit BaricoinUnit;
  
  #endif // BARICOIN_QT_BARICOINUNITS_H
  