Initial commit.

src/qt/bitcoinunits.h

@@ -0,0 +1,66 @@
+#ifndef BITCOINUNITS_H
+#define BITCOINUNITS_H
+
+#include <QString>
+#include <QAbstractListModel>
+
+/** Bitcoin unit definitions. Encapsulates parsing and formatting
+   and serves as list model for dropdown selection boxes.
+*/
+class BitcoinUnits: public QAbstractListModel
+{
+public:
+    explicit BitcoinUnits(QObject *parent);
+
+    /** Bitcoin units.
+      @note Source: https://en.bitcoin.it/wiki/Units . Please add only sensible ones
+     */
+    enum Unit
+    {
+        BTC,
+        mBTC,
+        uBTC
+    };
+
+    //! @name Static API
+    //! Unit conversion and formatting
+    ///@{
+
+    //! Get list of units, for dropdown box
+    static QList<Unit> availableUnits();
+    //! Is unit ID valid?
+    static bool valid(int unit);
+    //! Short name
+    static QString name(int unit);
+    //! Longer description
+    static QString description(int unit);
+    //! Number of Satoshis (1e-8) per unit
+    static qint64 factor(int unit);
+    //! Number of amount digits (to represent max number of coins)
+    static int amountDigits(int unit);
+    //! Number of decimals left
+    static int decimals(int unit);
+    //! Format as string
+    static QString format(int unit, qint64 amount, bool plussign=false);
+    //! Format as string (with unit)
+    static QString formatWithUnit(int unit, qint64 amount, bool plussign=false);
+    //! Parse string to coin amount
+    static bool parse(int unit, const QString &value, qint64 *val_out);
+    ///@}
+
+    //! @name AbstractListModel implementation
+    //! List model for unit dropdown selection box.
+    ///@{
+    enum RoleIndex {
+        /** Unit identifier */
+        UnitRole = Qt::UserRole
+    };
+    int rowCount(const QModelIndex &parent) const;
+    QVariant data(const QModelIndex &index, int role) const;
+    ///@}
+private:
+    QList<BitcoinUnits::Unit> unitlist;
+};
+typedef BitcoinUnits::Unit BitcoinUnit;
+
+#endif // BITCOINUNITS_H