1 #include "bitcoinamountfield.h"
2 #include "qvalidatedlineedit.h"
3 #include "qvaluecombobox.h"
4 #include "bitcoinunits.h"
8 #include <QRegExpValidator>
14 BitcoinAmountField::BitcoinAmountField(QWidget *parent):
15 QWidget(parent), amount(0), decimals(0), currentUnit(-1)
17 amount = new QValidatedLineEdit(this);
18 amount->setValidator(new QRegExpValidator(QRegExp("[0-9]*"), this));
19 amount->setAlignment(Qt::AlignRight|Qt::AlignVCenter);
20 amount->installEventFilter(this);
21 amount->setMaximumWidth(75);
22 decimals = new QValidatedLineEdit(this);
23 decimals->setValidator(new QRegExpValidator(QRegExp("[0-9]+"), this));
24 decimals->setAlignment(Qt::AlignLeft|Qt::AlignVCenter);
25 decimals->setMaximumWidth(75);
27 QHBoxLayout *layout = new QHBoxLayout(this);
28 layout->setSpacing(0);
29 layout->addWidget(amount);
30 layout->addWidget(new QLabel(QString("<b>.</b>")));
31 layout->addWidget(decimals);
32 unit = new QValueComboBox(this);
33 unit->setModel(new BitcoinUnits(this));
34 layout->addWidget(unit);
35 layout->addStretch(1);
36 layout->setContentsMargins(0,0,0,0);
40 setFocusPolicy(Qt::TabFocus);
41 setFocusProxy(amount);
43 // If one if the widgets changes, the combined content changes as well
44 connect(amount, SIGNAL(textChanged(QString)), this, SIGNAL(textChanged()));
45 connect(decimals, SIGNAL(textChanged(QString)), this, SIGNAL(textChanged()));
46 connect(unit, SIGNAL(currentIndexChanged(int)), this, SLOT(unitChanged(int)));
48 // TODO: set default based on configuration
49 unitChanged(unit->currentIndex());
52 void BitcoinAmountField::setText(const QString &text)
54 const QStringList parts = text.split(QString("."));
57 amount->setText(parts[0]);
58 decimals->setText(parts[1]);
62 amount->setText(QString());
63 decimals->setText(QString());
67 void BitcoinAmountField::clear()
71 // TODO: set default based on configuration
72 unit->setCurrentIndex(0);
75 bool BitcoinAmountField::validate()
78 if(decimals->text().isEmpty())
80 decimals->setValid(false);
83 if(!BitcoinUnits::parse(currentUnit, text(), 0))
92 void BitcoinAmountField::setValid(bool valid)
94 amount->setValid(valid);
95 decimals->setValid(valid);
98 QString BitcoinAmountField::text() const
100 if(decimals->text().isEmpty() && amount->text().isEmpty())
104 return amount->text() + QString(".") + decimals->text();
107 // Intercept '.' and ',' keys, if pressed focus a specified widget
108 bool BitcoinAmountField::eventFilter(QObject *object, QEvent *event)
111 if(event->type() == QEvent::KeyPress)
113 QKeyEvent *keyEvent = static_cast<QKeyEvent *>(event);
114 if(keyEvent->key() == Qt::Key_Period || keyEvent->key() == Qt::Key_Comma)
116 decimals->setFocus();
117 decimals->selectAll();
123 QWidget *BitcoinAmountField::setupTabChain(QWidget *prev)
125 QWidget::setTabOrder(prev, amount);
126 QWidget::setTabOrder(amount, decimals);
130 qint64 BitcoinAmountField::value(bool *valid_out) const
133 bool valid = BitcoinUnits::parse(currentUnit, text(), &val_out);
141 void BitcoinAmountField::setValue(qint64 value)
143 setText(BitcoinUnits::format(currentUnit, value));
146 void BitcoinAmountField::unitChanged(int idx)
148 // Use description tooltip for current unit for the combobox
149 unit->setToolTip(unit->itemData(idx, Qt::ToolTipRole).toString());
151 // Determine new unit ID
152 int newUnit = unit->itemData(idx, BitcoinUnits::UnitRole).toInt();
154 // Parse current value and convert to new unit
156 qint64 currentValue = value(&valid);
158 currentUnit = newUnit;
160 // Set max length after retrieving the value, to prevent truncation
161 amount->setMaxLength(BitcoinUnits::amountDigits(currentUnit));
162 decimals->setMaxLength(BitcoinUnits::decimals(currentUnit));
166 setValue(currentValue);
170 // If current value is invalid, just clear field
176 void BitcoinAmountField::setDisplayUnit(int newUnit)
178 unit->setValue(newUnit);