mirror of
https://github.com/dashpay/dash.git
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271 lines
7.5 KiB
C++
271 lines
7.5 KiB
C++
// Copyright (c) 2011-2015 The Bitcoin Core developers
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// Copyright (c) 2014-2019 The Dash Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "bitcoinunits.h"
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#include "chainparams.h"
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#include "primitives/transaction.h"
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#include <QSettings>
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#include <QStringList>
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BitcoinUnits::BitcoinUnits(QObject *parent):
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QAbstractListModel(parent),
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unitlist(availableUnits())
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{
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}
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QList<BitcoinUnits::Unit> BitcoinUnits::availableUnits()
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{
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QList<BitcoinUnits::Unit> unitlist;
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unitlist.append(DASH);
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unitlist.append(mDASH);
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unitlist.append(uDASH);
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unitlist.append(duffs);
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return unitlist;
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}
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bool BitcoinUnits::valid(int unit)
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{
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switch(unit)
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{
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case DASH:
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case mDASH:
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case uDASH:
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case duffs:
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return true;
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default:
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return false;
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}
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}
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QString BitcoinUnits::name(int unit)
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{
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if(Params().NetworkIDString() == CBaseChainParams::MAIN)
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{
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switch(unit)
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{
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case DASH: return QString("DASH");
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case mDASH: return QString("mDASH");
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case uDASH: return QString::fromUtf8("μDASH");
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case duffs: return QString("duffs");
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default: return QString("???");
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}
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}
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else
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{
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switch(unit)
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{
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case DASH: return QString("tDASH");
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case mDASH: return QString("mtDASH");
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case uDASH: return QString::fromUtf8("μtDASH");
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case duffs: return QString("tduffs");
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default: return QString("???");
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}
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}
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}
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QString BitcoinUnits::description(int unit)
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{
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if(Params().NetworkIDString() == CBaseChainParams::MAIN)
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{
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switch(unit)
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{
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case DASH: return QString("Dash");
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case mDASH: return QString("Milli-Dash (1 / 1" THIN_SP_UTF8 "000)");
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case uDASH: return QString("Micro-Dash (1 / 1" THIN_SP_UTF8 "000" THIN_SP_UTF8 "000)");
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case duffs: return QString("Ten Nano-Dash (1 / 100" THIN_SP_UTF8 "000" THIN_SP_UTF8 "000)");
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default: return QString("???");
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}
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}
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else
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{
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switch(unit)
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{
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case DASH: return QString("TestDashs");
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case mDASH: return QString("Milli-TestDash (1 / 1" THIN_SP_UTF8 "000)");
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case uDASH: return QString("Micro-TestDash (1 / 1" THIN_SP_UTF8 "000" THIN_SP_UTF8 "000)");
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case duffs: return QString("Ten Nano-TestDash (1 / 100" THIN_SP_UTF8 "000" THIN_SP_UTF8 "000)");
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default: return QString("???");
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}
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}
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}
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qint64 BitcoinUnits::factor(int unit)
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{
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switch(unit)
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{
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case DASH: return 100000000;
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case mDASH: return 100000;
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case uDASH: return 100;
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case duffs: return 1;
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default: return 100000000;
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}
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}
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int BitcoinUnits::decimals(int unit)
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{
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switch(unit)
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{
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case DASH: return 8;
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case mDASH: return 5;
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case uDASH: return 2;
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case duffs: return 0;
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default: return 0;
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}
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}
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QString BitcoinUnits::format(int unit, const CAmount& nIn, bool fPlus, SeparatorStyle separators)
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{
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// Note: not using straight sprintf here because we do NOT want
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// localized number formatting.
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if(!valid(unit))
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return QString(); // Refuse to format invalid unit
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qint64 n = (qint64)nIn;
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qint64 coin = factor(unit);
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int num_decimals = decimals(unit);
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qint64 n_abs = (n > 0 ? n : -n);
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qint64 quotient = n_abs / coin;
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qint64 remainder = n_abs % coin;
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QString quotient_str = QString::number(quotient);
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QString remainder_str = QString::number(remainder).rightJustified(num_decimals, '0');
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// Use SI-style thin space separators as these are locale independent and can't be
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// confused with the decimal marker.
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QChar thin_sp(THIN_SP_CP);
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int q_size = quotient_str.size();
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if (separators == separatorAlways || (separators == separatorStandard && q_size > 4))
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for (int i = 3; i < q_size; i += 3)
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quotient_str.insert(q_size - i, thin_sp);
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if (n < 0)
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quotient_str.insert(0, '-');
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else if (fPlus && n > 0)
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quotient_str.insert(0, '+');
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if (num_decimals <= 0)
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return quotient_str;
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return quotient_str + QString(".") + remainder_str;
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}
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// NOTE: Using formatWithUnit in an HTML context risks wrapping
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// quantities at the thousands separator. More subtly, it also results
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// in a standard space rather than a thin space, due to a bug in Qt's
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// XML whitespace canonicalisation
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//
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// Please take care to use formatHtmlWithUnit instead, when
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// appropriate.
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QString BitcoinUnits::formatWithUnit(int unit, const CAmount& amount, bool plussign, SeparatorStyle separators)
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{
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return format(unit, amount, plussign, separators) + QString(" ") + name(unit);
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}
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QString BitcoinUnits::formatHtmlWithUnit(int unit, const CAmount& amount, bool plussign, SeparatorStyle separators)
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{
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QString str(formatWithUnit(unit, amount, plussign, separators));
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str.replace(QChar(THIN_SP_CP), QString(THIN_SP_HTML));
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return QString("<span style='white-space: nowrap;'>%1</span>").arg(str);
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}
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QString BitcoinUnits::floorWithUnit(int unit, const CAmount& amount, bool plussign, SeparatorStyle separators)
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{
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QSettings settings;
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int digits = settings.value("digits").toInt();
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QString result = format(unit, amount, plussign, separators);
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if(decimals(unit) > digits) result.chop(decimals(unit) - digits);
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return result + QString(" ") + name(unit);
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}
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QString BitcoinUnits::floorHtmlWithUnit(int unit, const CAmount& amount, bool plussign, SeparatorStyle separators)
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{
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QString str(floorWithUnit(unit, amount, plussign, separators));
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str.replace(QChar(THIN_SP_CP), QString(THIN_SP_HTML));
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return QString("<span style='white-space: nowrap;'>%1</span>").arg(str);
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}
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bool BitcoinUnits::parse(int unit, const QString &value, CAmount *val_out)
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{
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if(!valid(unit) || value.isEmpty())
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return false; // Refuse to parse invalid unit or empty string
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int num_decimals = decimals(unit);
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// Ignore spaces and thin spaces when parsing
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QStringList parts = removeSpaces(value).split(".");
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if(parts.size() > 2)
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{
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return false; // More than one dot
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}
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QString whole = parts[0];
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QString decimals;
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if(parts.size() > 1)
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{
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decimals = parts[1];
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}
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if(decimals.size() > num_decimals)
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{
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return false; // Exceeds max precision
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}
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bool ok = false;
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QString str = whole + decimals.leftJustified(num_decimals, '0');
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if(str.size() > 18)
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{
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return false; // Longer numbers will exceed 63 bits
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}
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CAmount retvalue(str.toLongLong(&ok));
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if(val_out)
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{
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*val_out = retvalue;
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}
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return ok;
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}
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QString BitcoinUnits::getAmountColumnTitle(int unit)
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{
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QString amountTitle = QObject::tr("Amount");
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if (BitcoinUnits::valid(unit))
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{
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amountTitle += " ("+BitcoinUnits::name(unit) + ")";
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}
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return amountTitle;
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}
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int BitcoinUnits::rowCount(const QModelIndex &parent) const
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{
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Q_UNUSED(parent);
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return unitlist.size();
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}
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QVariant BitcoinUnits::data(const QModelIndex &index, int role) const
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{
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int row = index.row();
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if(row >= 0 && row < unitlist.size())
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{
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Unit unit = unitlist.at(row);
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switch(role)
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{
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case Qt::EditRole:
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case Qt::DisplayRole:
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return QVariant(name(unit));
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case Qt::ToolTipRole:
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return QVariant(description(unit));
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case UnitRole:
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return QVariant(static_cast<int>(unit));
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}
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}
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return QVariant();
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}
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CAmount BitcoinUnits::maxMoney()
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{
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return MAX_MONEY;
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}
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