1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
// Copyright (c) 2011-2018 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <qt/bitcoinunits.h>
#include <primitives/transaction.h>
#include <QStringList>
BitcoinUnits::BitcoinUnits(QObject *parent):
QAbstractListModel(parent),
unitlist(availableUnits())
{
}
QList<BitcoinUnits::Unit> BitcoinUnits::availableUnits()
{
QList<BitcoinUnits::Unit> unitlist;
unitlist.append(BTC);
unitlist.append(mBTC);
unitlist.append(uBTC);
unitlist.append(SAT);
return unitlist;
}
bool BitcoinUnits::valid(int unit)
{
switch(unit)
{
case BTC:
case mBTC:
case uBTC:
case SAT:
return true;
default:
return false;
}
}
QString BitcoinUnits::longName(int unit)
{
switch(unit)
{
case BTC: return QString("BTC");
case mBTC: return QString("mBTC");
case uBTC: return QString::fromUtf8("µBTC (bits)");
case SAT: return QString("Satoshi (sat)");
default: return QString("???");
}
}
QString BitcoinUnits::shortName(int unit)
{
switch(unit)
{
case uBTC: return QString::fromUtf8("bits");
case SAT: return QString("sat");
default: return longName(unit);
}
}
QString BitcoinUnits::description(int unit)
{
switch(unit)
{
case BTC: return QString("Bitcoins");
case mBTC: return QString("Milli-Bitcoins (1 / 1" THIN_SP_UTF8 "000)");
case uBTC: return QString("Micro-Bitcoins (bits) (1 / 1" THIN_SP_UTF8 "000" THIN_SP_UTF8 "000)");
case SAT: return QString("Satoshi (sat) (1 / 100" THIN_SP_UTF8 "000" THIN_SP_UTF8 "000)");
default: return QString("???");
}
}
qint64 BitcoinUnits::factor(int unit)
{
switch(unit)
{
case BTC: return 100000000;
case mBTC: return 100000;
case uBTC: return 100;
case SAT: return 1;
default: return 100000000;
}
}
int BitcoinUnits::decimals(int unit)
{
switch(unit)
{
case BTC: return 8;
case mBTC: return 5;
case uBTC: return 2;
case SAT: return 0;
default: return 0;
}
}
QString BitcoinUnits::format(int unit, const CAmount& nIn, bool fPlus, SeparatorStyle separators)
{
// Note: not using straight sprintf here because we do NOT want
// localized number formatting.
if(!valid(unit))
return QString(); // Refuse to format invalid unit
qint64 n = (qint64)nIn;
qint64 coin = factor(unit);
int num_decimals = decimals(unit);
qint64 n_abs = (n > 0 ? n : -n);
qint64 quotient = n_abs / coin;
QString quotient_str = QString::number(quotient);
// Use SI-style thin space separators as these are locale independent and can't be
// confused with the decimal marker.
QChar thin_sp(THIN_SP_CP);
int q_size = quotient_str.size();
if (separators == separatorAlways || (separators == separatorStandard && q_size > 4))
for (int i = 3; i < q_size; i += 3)
quotient_str.insert(q_size - i, thin_sp);
if (n < 0)
quotient_str.insert(0, '-');
else if (fPlus && n > 0)
quotient_str.insert(0, '+');
if (num_decimals > 0) {
qint64 remainder = n_abs % coin;
QString remainder_str = QString::number(remainder).rightJustified(num_decimals, '0');
return quotient_str + QString(".") + remainder_str;
} else {
return quotient_str;
}
}
// NOTE: Using formatWithUnit in an HTML context risks wrapping
// quantities at the thousands separator. More subtly, it also results
// in a standard space rather than a thin space, due to a bug in Qt's
// XML whitespace canonicalisation
//
// Please take care to use formatHtmlWithUnit instead, when
// appropriate.
QString BitcoinUnits::formatWithUnit(int unit, const CAmount& amount, bool plussign, SeparatorStyle separators)
{
return format(unit, amount, plussign, separators) + QString(" ") + shortName(unit);
}
QString BitcoinUnits::formatHtmlWithUnit(int unit, const CAmount& amount, bool plussign, SeparatorStyle separators)
{
QString str(formatWithUnit(unit, amount, plussign, separators));
str.replace(QChar(THIN_SP_CP), QString(THIN_SP_HTML));
return QString("<span style='white-space: nowrap;'>%1</span>").arg(str);
}
bool BitcoinUnits::parse(int unit, const QString &value, CAmount *val_out)
{
if(!valid(unit) || value.isEmpty())
return false; // Refuse to parse invalid unit or empty string
int num_decimals = decimals(unit);
// Ignore spaces and thin spaces when parsing
QStringList parts = removeSpaces(value).split(".");
if(parts.size() > 2)
{
return false; // More than one dot
}
QString whole = parts[0];
QString decimals;
if(parts.size() > 1)
{
decimals = parts[1];
}
if(decimals.size() > num_decimals)
{
return false; // Exceeds max precision
}
bool ok = false;
QString str = whole + decimals.leftJustified(num_decimals, '0');
if(str.size() > 18)
{
return false; // Longer numbers will exceed 63 bits
}
CAmount retvalue(str.toLongLong(&ok));
if(val_out)
{
*val_out = retvalue;
}
return ok;
}
QString BitcoinUnits::getAmountColumnTitle(int unit)
{
QString amountTitle = QObject::tr("Amount");
if (BitcoinUnits::valid(unit))
{
amountTitle += " ("+BitcoinUnits::shortName(unit) + ")";
}
return amountTitle;
}
int BitcoinUnits::rowCount(const QModelIndex &parent) const
{
Q_UNUSED(parent);
return unitlist.size();
}
QVariant BitcoinUnits::data(const QModelIndex &index, int role) const
{
int row = index.row();
if(row >= 0 && row < unitlist.size())
{
Unit unit = unitlist.at(row);
switch(role)
{
case Qt::EditRole:
case Qt::DisplayRole:
return QVariant(longName(unit));
case Qt::ToolTipRole:
return QVariant(description(unit));
case UnitRole:
return QVariant(static_cast<int>(unit));
}
}
return QVariant();
}
CAmount BitcoinUnits::maxMoney()
{
return MAX_MONEY;
}
|
