r1

src/qt/bitcoinunits.h

@@ -0,0 +1,133 @@
+// Copyright (c) 2011-2014 The Bitcoin developers
+// Copyright (c) 2014-2015 The Dash developers
+// Copyright (c) 2015-2017 The PIVX developers
+// Distributed under the MIT/X11 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 "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"
+#define REAL_THIN_SP_HTML "&thinsp;"
+
+// U+200A HAIR SPACE = UTF-8 E2 80 8A
+#define HAIR_SP_CP 0x200A
+#define HAIR_SP_UTF8 "\xE2\x80\x8A"
+#define HAIR_SP_HTML "&#8202;"
+
+// U+2006 SIX-PER-EM SPACE = UTF-8 E2 80 86
+#define SIXPEREM_SP_CP 0x2006
+#define SIXPEREM_SP_UTF8 "\xE2\x80\x86"
+#define SIXPEREM_SP_HTML "&#8198;"
+
+// U+2007 FIGURE SPACE = UTF-8 E2 80 87
+#define FIGURE_SP_CP 0x2007
+#define FIGURE_SP_UTF8 "\xE2\x80\x87"
+#define FIGURE_SP_HTML "&#8199;"
+
+// 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
+
+/** Agrarian 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);
+
+    /** Agrarian units.
+      @note Source: https://en.bitcoin.it/wiki/Units . Please add only sensible ones
+     */
+    enum Unit {
+        AGR,
+        mAGR,
+        uAGR
+    };
+
+    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);
+    //! Identifier, e.g. for image names
+    static QString id(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 decimals left
+    static int decimals(int unit);
+    //! Format as string
+    static QString format(int unit, const CAmount& amount, bool plussign = false, SeparatorStyle separators = separatorStandard);
+    static QString simpleFormat(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);
+    static QString formatHtmlWithUnit(int unit, const CAmount& amount, bool plussign = false, SeparatorStyle separators = separatorStandard);
+    //! Format as string (with unit) but floor value up to "digits" settings
+    static QString floorWithUnit(int unit, const CAmount& amount, bool plussign = false, SeparatorStyle separators = separatorStandard);
+    static QString floorHtmlWithUnit(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));
+#if (THIN_SP_CP != REAL_THIN_SP_CP)
+        text.remove(QChar(REAL_THIN_SP_CP));
+#endif
+        return text;
+    }
+
+    //! Return maximum number of base units (Satoshis)
+    static CAmount maxMoney();
+
+private:
+    QList<BitcoinUnits::Unit> unitlist;
+};
+typedef BitcoinUnits::Unit BitcoinUnit;
+
+#endif // BITCOIN_QT_BITCOINUNITS_H