src/qt/bitcoinamountfield.h

   1 // Copyright (c) 2011-2017 The Bitcoin Core developers
   2 // Distributed under the MIT software license, see the accompanying
   3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
   4
   5 #ifndef BITCOIN_QT_BITCOINAMOUNTFIELD_H
   6 #define BITCOIN_QT_BITCOINAMOUNTFIELD_H
   7
   8 #include <amount.h>
   9
  10 #include <QWidget>
  11
  12 class AmountSpinBox;
  13
  14 QT_BEGIN_NAMESPACE
  15 class QValueComboBox;
  16 QT_END_NAMESPACE
  17
  18 /** Widget for entering bitcoin amounts.
  19   */
  20 class BitcoinAmountField: public QWidget
  21 {
  22     Q_OBJECT
  23
  24     // ugly hack: for some unknown reason CAmount (instead of qint64) does not work here as expected
  25     // discussion: https://github.com/bitcoin/bitcoin/pull/5117
  26     Q_PROPERTY(qint64 value READ value WRITE setValue NOTIFY valueChanged USER true)
  27
  28 public:
  29     explicit BitcoinAmountField(QWidget *parent = 0);
  30
  31     CAmount value(bool *value=0) const;
  32     void setValue(const CAmount& value);
  33
  34     /** Set single step in satoshis **/
  35     void setSingleStep(const CAmount& step);
  36
  37     /** Make read-only **/
  38     void setReadOnly(bool fReadOnly);
  39
  40     /** Mark current value as invalid in UI. */
  41     void setValid(bool valid);
  42     /** Perform input validation, mark field as invalid if entered value is not valid. */
  43     bool validate();
  44
  45     /** Change unit used to display amount. */
  46     void setDisplayUnit(int unit);
  47
  48     /** Make field empty and ready for new input. */
  49     void clear();
  50
  51     /** Enable/Disable. */
  52     void setEnabled(bool fEnabled);
  53
  54     /** Qt messes up the tab chain by default in some cases (issue https://bugreports.qt-project.org/browse/QTBUG-10907),
  55         in these cases we have to set it up manually.
  56     */
  57     QWidget *setupTabChain(QWidget *prev);
  58
  59 Q_SIGNALS:
  60     void valueChanged();
  61
  62 protected:
  63     /** Intercept focus-in event and ',' key presses */
  64     bool eventFilter(QObject *object, QEvent *event);
  65
  66 private:
  67     AmountSpinBox *amount;
  68     QValueComboBox *unit;
  69
  70 private Q_SLOTS:
  71     void unitChanged(int idx);
  72
  73 };
  74
  75 #endif // BITCOIN_QT_BITCOINAMOUNTFIELD_H