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// Copyright (c) 2011-2021 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 <QDataStream>
#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
/** Bitcoin unit definitions. Encapsulates parsing and formatting
and serves as list model for drop-down selection boxes.
*/
class BitcoinUnits: public QAbstractListModel
{
Q_OBJECT
public:
explicit BitcoinUnits(QObject *parent);
/** Bitcoin units.
@note Source: https://en.bitcoin.it/wiki/Units . Please add only sensible ones
*/
enum class Unit {
BTC,
mBTC,
uBTC,
SAT
};
Q_ENUM(Unit)
enum class SeparatorStyle
{
NEVER,
STANDARD,
ALWAYS
};
//! @name Static API
//! Unit conversion and formatting
///@{
//! Get list of units, for drop-down box
static QList<Unit> availableUnits();
//! Long name
static QString longName(Unit unit);
//! Short name
static QString shortName(Unit unit);
//! Longer description
static QString description(Unit unit);
//! Number of Satoshis (1e-8) per unit
static qint64 factor(Unit unit);
//! Number of decimals left
static int decimals(Unit unit);
//! Format as string
static QString format(Unit unit, const CAmount& amount, bool plussign = false, SeparatorStyle separators = SeparatorStyle::STANDARD, bool justify = false);
//! Format as string (with unit)
static QString formatWithUnit(Unit unit, const CAmount& amount, bool plussign = false, SeparatorStyle separators = SeparatorStyle::STANDARD);
//! Format as HTML string (with unit)
static QString formatHtmlWithUnit(Unit unit, const CAmount& amount, bool plussign = false, SeparatorStyle separators = SeparatorStyle::STANDARD);
//! Format as string (with unit) of fixed length to preserve privacy, if it is set.
static QString formatWithPrivacy(Unit unit, const CAmount& amount, SeparatorStyle separators, bool privacy);
//! Parse string to coin amount
static bool parse(Unit unit, const QString& value, CAmount* val_out);
//! Gets title for amount column including current display unit if optionsModel reference available */
static QString getAmountColumnTitle(Unit 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 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;
}
//! Return maximum number of base units (Satoshis)
static CAmount maxMoney();
private:
QList<Unit> unitlist;
};
typedef BitcoinUnits::Unit BitcoinUnit;
QDataStream& operator<<(QDataStream& out, const BitcoinUnit& unit);
QDataStream& operator>>(QDataStream& in, BitcoinUnit& unit);
#endif // BITCOIN_QT_BITCOINUNITS_H
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