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allow multiple units in bitcoin amount widget (for example, for sending) using a combobox

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This commit is contained in:
Wladimir J. van der Laan 2011-07-26 13:08:34 +02:00
parent ca1dbe10ed
commit 587e52855a
8 changed files with 197 additions and 49 deletions
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71
src/qt/bitcoinamountfield.cpp
View file

@ -7,9 +7,10 @@
#include <QRegExpValidator>
#include <QHBoxLayout>
#include <QKeyEvent>
#include <QComboBox>
BitcoinAmountField::BitcoinAmountField(QWidget *parent):
QWidget(parent), amount(0), decimals(0)
QWidget(parent), amount(0), decimals(0), currentUnit(-1)
{
amount = new QValidatedLineEdit(this);
amount->setValidator(new QRegExpValidator(QRegExp("[0-9]*"), this));
@ -18,7 +19,6 @@ BitcoinAmountField::BitcoinAmountField(QWidget *parent):
amount->setMaximumWidth(100);
decimals = new QValidatedLineEdit(this);
decimals->setValidator(new QRegExpValidator(QRegExp("[0-9]+"), this));
decimals->setMaxLength(8);
decimals->setAlignment(Qt::AlignLeft|Qt::AlignVCenter);
decimals->setMaximumWidth(75);
@ -27,7 +27,9 @@ BitcoinAmountField::BitcoinAmountField(QWidget *parent):
layout->addWidget(amount);
layout->addWidget(new QLabel(QString(".")));
layout->addWidget(decimals);
layout->addWidget(new QLabel(QString(" ") + BitcoinUnits::name(BitcoinUnits::BTC)));
unit = new QComboBox(this);
unit->setModel(new BitcoinUnits(this));
layout->addWidget(unit);
layout->addStretch(1);
layout->setContentsMargins(0,0,0,0);
@ -39,6 +41,10 @@ BitcoinAmountField::BitcoinAmountField(QWidget *parent):
// If one if the widgets changes, the combined content changes as well
connect(amount, SIGNAL(textChanged(QString)), this, SIGNAL(textChanged()));
connect(decimals, SIGNAL(textChanged(QString)), this, SIGNAL(textChanged()));
connect(unit, SIGNAL(currentIndexChanged(int)), this, SLOT(unitChanged(int)));
// TODO: set default based on configuration
unitChanged(unit->currentIndex());
}
void BitcoinAmountField::setText(const QString &text)
@ -72,17 +78,22 @@ bool BitcoinAmountField::validate()
}
if(!BitcoinUnits::parse(BitcoinUnits::BTC, text(), 0))
{
amount->setValid(false);
decimals->setValid(false);
setValid(false);
valid = false;
}
return valid;
}
void BitcoinAmountField::setValid(bool valid)
{
amount->setValid(valid);
decimals->setValid(valid);
}
QString BitcoinAmountField::text() const
{
if(decimals->text().isEmpty())
if(decimals->text().isEmpty() && amount->text().isEmpty())
{
return QString();
}
@ -111,3 +122,51 @@ QWidget *BitcoinAmountField::setupTabChain(QWidget *prev)
QWidget::setTabOrder(amount, decimals);
return decimals;
}
qint64 BitcoinAmountField::value(bool *valid_out) const
{
qint64 val_out = 0;
bool valid = BitcoinUnits::parse(currentUnit, text(), &val_out);
if(valid_out)
{
*valid_out = valid;
}
return val_out;
}
void BitcoinAmountField::setValue(qint64 value)
{
setText(BitcoinUnits::format(currentUnit, value));
}
void BitcoinAmountField::unitChanged(int idx)
{
// Use description tooltip for current unit for the combobox
unit->setToolTip(unit->itemData(idx, Qt::ToolTipRole).toString());
// Determine new unit ID
int newUnit = unit->itemData(idx, BitcoinUnits::UnitRole).toInt();
// Parse current value and convert to new unit
bool valid = false;
qint64 currentValue = value(&valid);
currentUnit = newUnit;
// Set max length after retrieving the value, to prevent truncation
amount->setMaxLength(BitcoinUnits::amountDigits(currentUnit));
decimals->setMaxLength(BitcoinUnits::decimals(currentUnit));
if(valid)
{
setValue(currentValue);
}
else
{
// If current value is invalid, just clear field
setText("");
}
setValid(true);
}

24
src/qt/bitcoinamountfield.h
View file

@ -5,6 +5,7 @@
QT_BEGIN_NAMESPACE
class QValidatedLineEdit;
class QComboBox;
QT_END_NAMESPACE
// Coin amount entry widget with separate parts for whole
@ -12,15 +13,21 @@ QT_END_NAMESPACE
class BitcoinAmountField: public QWidget
{
Q_OBJECT
Q_PROPERTY(QString text READ text WRITE setText NOTIFY textChanged USER true);
//Q_PROPERTY(QString text READ text WRITE setText NOTIFY textChanged USER true);
Q_PROPERTY(qint64 value READ value WRITE setValue NOTIFY textChanged USER true);
public:
explicit BitcoinAmountField(QWidget *parent = 0);
void setText(const QString &text);
QString text() const;
qint64 value(bool *valid=0) const;
void setValue(qint64 value);
void clear();
// Mark current valid as invalid in UI
void setValid(bool valid);
bool validate();
// Make field empty and ready for new input
void clear();
// Qt messes up the tab chain by default in some cases (issue http://bugreports.qt.nokia.com/browse/QTBUG-10907)
// Hence we have to set it up manually
QWidget *setupTabChain(QWidget *prev);
@ -35,6 +42,15 @@ protected:
private:
QValidatedLineEdit *amount;
QValidatedLineEdit *decimals;
QComboBox *unit;
int currentUnit;
void setText(const QString &text);
QString text() const;
private slots:
void unitChanged(int idx);
};

72
src/qt/bitcoinunits.cpp
View file

@ -2,7 +2,22 @@
#include <QStringList>
QString BitcoinUnits::name(BitcoinUnits::Unit unit)
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);
return unitlist;
}
QString BitcoinUnits::name(int unit)
{
switch(unit)
{
@ -13,18 +28,18 @@ QString BitcoinUnits::name(BitcoinUnits::Unit unit)
}
}
QString BitcoinUnits::description(BitcoinUnits::Unit unit)
QString BitcoinUnits::description(int unit)
{
switch(unit)
{
case BTC: return QString("Bitcoin");
case mBTC: return QString("Milli-bitcoin (1/1000)");
case uBTC: return QString("Micro-bitcoin (1/1000,000)");
case BTC: return QString("Bitcoins");
case mBTC: return QString("Milli-Bitcoins (1 / 1,000)");
case uBTC: return QString("Micro-Bitcoins (1 / 1,000,000)");
default: return QString("???");
}
}
qint64 BitcoinUnits::factor(BitcoinUnits::Unit unit)
qint64 BitcoinUnits::factor(int unit)
{
switch(unit)
{
@ -35,7 +50,18 @@ qint64 BitcoinUnits::factor(BitcoinUnits::Unit unit)
}
}
int BitcoinUnits::decimals(BitcoinUnits::Unit unit)
int BitcoinUnits::amountDigits(int unit)
{
switch(unit)
{
case BTC: return 8; // 21,000,000
case mBTC: return 11; // 21,000,000,000
case uBTC: return 14; // 21,000,000,000,000
default: return 0;
}
}
int BitcoinUnits::decimals(int unit)
{
switch(unit)
{
@ -46,7 +72,7 @@ int BitcoinUnits::decimals(BitcoinUnits::Unit unit)
}
}
QString BitcoinUnits::format(BitcoinUnits::Unit unit, qint64 n, bool fPlus)
QString BitcoinUnits::format(int unit, qint64 n, bool fPlus)
{
// Note: not using straight sprintf here because we do NOT want
// localized number formatting.
@ -71,12 +97,12 @@ QString BitcoinUnits::format(BitcoinUnits::Unit unit, qint64 n, bool fPlus)
return quotient_str + QString(".") + remainder_str;
}
QString BitcoinUnits::formatWithUnit(BitcoinUnits::Unit unit, qint64 amount, bool plussign)
QString BitcoinUnits::formatWithUnit(int unit, qint64 amount, bool plussign)
{
return format(unit, amount, plussign) + QString(" ") + name(unit);
}
bool BitcoinUnits::parse(BitcoinUnits::Unit unit, const QString &value, qint64 *val_out)
bool BitcoinUnits::parse(int unit, const QString &value, qint64 *val_out)
{
int num_decimals = decimals(unit);
QStringList parts = value.split(".");
@ -94,3 +120,29 @@ bool BitcoinUnits::parse(BitcoinUnits::Unit unit, const QString &value, qint64 *
}
return ok;
}
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(name(unit));
case Qt::ToolTipRole:
return QVariant(description(unit));
case UnitRole:
return QVariant(static_cast<int>(unit));
}
}
return QVariant();
}

36
src/qt/bitcoinunits.h
View file

@ -2,33 +2,53 @@
#define BITCOINUNITS_H
#include <QString>
#include <QAbstractListModel>
// Bitcoin unit definitions
class BitcoinUnits
class BitcoinUnits: public QAbstractListModel
{
public:
explicit BitcoinUnits(QObject *parent);
enum Unit
{
// Source: https://en.bitcoin.it/wiki/Units
// Please add only sensible ones
BTC,
mBTC,
uBTC
};
/// Static API
// Get list of units, for dropdown box
static QList<Unit> availableUnits();
// Short name
static QString name(Unit unit);
static QString name(int unit);
// Longer description
static QString description(Unit unit);
static QString description(int unit);
// Number of satoshis / unit
static qint64 factor(Unit 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(Unit unit);
static int decimals(int unit);
// Format as string
static QString format(Unit unit, qint64 amount, bool plussign=false);
static QString format(int unit, qint64 amount, bool plussign=false);
// Format as string (with unit)
static QString formatWithUnit(Unit unit, qint64 amount, bool plussign=false);
static QString formatWithUnit(int unit, qint64 amount, bool plussign=false);
// Parse string to coin amount
static bool parse(Unit unit, const QString &value, qint64 *val_out);
static bool parse(int unit, const QString &value, qint64 *val_out);
/// AbstractListModel implementation
enum {
// Unit identifier
UnitRole = Qt::UserRole
} RoleIndex;
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

1
src/qt/optionsdialog.cpp
View file

@ -103,7 +103,6 @@ OptionsDialog::OptionsDialog(QWidget *parent):
connect(mapper, SIGNAL(currentIndexChanged(int)), this, SLOT(disableApply()));
/* Event bindings */
qDebug() << "setup";
connect(contents_widget, SIGNAL(currentRowChanged(int)), this, SLOT(changePage(int)));
connect(buttonbox->button(QDialogButtonBox::Ok), SIGNAL(clicked()), this, SLOT(okClicked()));
connect(buttonbox->button(QDialogButtonBox::Cancel), SIGNAL(clicked()), this, SLOT(cancelClicked()));

12
src/qt/optionsmodel.cpp
View file

@ -36,7 +36,7 @@ QVariant OptionsModel::data(const QModelIndex & index, int role) const
case ProxyPort:
return QVariant(QString::fromStdString(addrProxy.ToStringPort()));
case Fee:
return QVariant(QString::fromStdString(FormatMoney(nTransactionFee)));
return QVariant(nTransactionFee);
default:
return QVariant();
}
@ -104,17 +104,9 @@ bool OptionsModel::setData(const QModelIndex & index, const QVariant & value, in
}
break;
case Fee: {
int64 retval;
if(ParseMoney(value.toString().toStdString(), retval))
{
nTransactionFee = retval;
nTransactionFee = value.toLongLong();
walletdb.WriteSetting("nTransactionFee", nTransactionFee);
}
else
{
successful = false; // Parse error
}
}
break;
default:
break;

16
src/qt/optionsmodel.h
View file

@ -18,14 +18,14 @@ public:
explicit OptionsModel(CWallet *wallet, QObject *parent = 0);
enum OptionID {
StartAtStartup,
MinimizeToTray,
MapPortUPnP,
MinimizeOnClose,
ConnectSOCKS4,
ProxyIP,
ProxyPort,
Fee,
StartAtStartup, // bool
MinimizeToTray, // bool
MapPortUPnP, // bool
MinimizeOnClose, // bool
ConnectSOCKS4, // bool
ProxyIP, // QString
ProxyPort, // QString
Fee, // qint64
OptionIDRowCount
};

12
src/qt/sendcoinsentry.cpp
View file

@ -87,6 +87,16 @@ bool SendCoinsEntry::validate()
{
retval = false;
}
else
{
if(ui->payAmount->value() <= 0)
{
// Cannot send 0 coins or less
ui->payAmount->setValid(false);
retval = false;
}
}
if(!ui->payTo->hasAcceptableInput() ||
(model && !model->validateAddress(ui->payTo->text())))
@ -104,7 +114,7 @@ SendCoinsRecipient SendCoinsEntry::getValue()
rv.address = ui->payTo->text();
rv.label = ui->addAsLabel->text();
BitcoinUnits::parse(BitcoinUnits::BTC, ui->payAmount->text(), &rv.amount);
rv.amount = ui->payAmount->value();
return rv;
}