bitcoinunits.h

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// Copyright (c) 2011-2016 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 BITCOIN_QT_BITCOINUNITS_H
#define BITCOIN_QT_BITCOINUNITS_H
 
#include <consensus/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
 
class BitcoinUnits : public QAbstractListModel {
    Q_OBJECT
 
public:
    explicit BitcoinUnits(QObject *parent);
 
    enum Unit { base, sub };
 
    enum class SeparatorStyle { NEVER, STANDARD, ALWAYS };
 
 
    static QList<Unit> availableUnits();
    static bool valid(int unit);
    static QString longName(int unit);
    static QString shortName(int unit);
    static QString description(int unit);
    static Amount factor(int unit);
    static int decimals(int unit);
    static QString format(int unit, const Amount amount, bool plussign = false,
                          SeparatorStyle separators = SeparatorStyle::STANDARD,
                          bool justify = false);
    static QString
    formatWithUnit(int unit, const Amount amount, bool plussign = false,
                   SeparatorStyle separators = SeparatorStyle::STANDARD);
    static QString
    formatHtmlWithUnit(int unit, const Amount amount, bool plussign = false,
                       SeparatorStyle separators = SeparatorStyle::STANDARD);
    static QString formatWithPrivacy(int unit, const Amount &amount,
                                     SeparatorStyle separators, bool privacy);
    static bool parse(int unit, const QString &value, Amount *val_out);
    static QString getAmountColumnTitle(int unit);
 
    enum RoleIndex {
        UnitRole = Qt::UserRole
    };
    int rowCount(const QModelIndex &parent) const override;
    QVariant data(const QModelIndex &index, int role) const override;
 
    static QString removeSpaces(QString text) {
        text.remove(' ');
        text.remove(QChar(THIN_SP_CP));
        return text;
    }
 
    static Amount maxMoney();
 
private:
    QList<BitcoinUnits::Unit> unitlist;
};
 
#endif // BITCOIN_QT_BITCOINUNITS_H