gui/qt/amountedit.py

   1 # -*- coding: utf-8 -*-
   2
   3 from PyQt4.QtCore import *
   4 from PyQt4.QtGui import *
   5
   6 from decimal import Decimal
   7
   8 class MyLineEdit(QLineEdit):
   9
  10     def setFrozen(self, b):
  11         self.setReadOnly(b)
  12         self.setFrame(not b)
  13
  14 class AmountEdit(MyLineEdit):
  15
  16     def __init__(self, decimal_point, is_int = False, parent=None):
  17         QLineEdit.__init__(self, parent)
  18         self.decimal_point = decimal_point
  19         self.textChanged.connect(self.numbify)
  20         self.is_int = is_int
  21         self.is_shortcut = False
  22
  23     def base_unit(self):
  24         p = self.decimal_point()
  25         assert p in [5,8]
  26         return "BTC" if p == 8 else "mBTC"
  27
  28     def get_amount(self):
  29         x = unicode( self.text() )
  30         if x in['.', '']:
  31             return None
  32         p = pow(10, self.decimal_point())
  33         return int( p * Decimal(x) )
  34
  35     def setAmount(self, amount):
  36         p = pow(10, self.decimal_point())
  37         x = amount / Decimal(p)
  38         self.setText(str(x))
  39
  40     def paintEvent(self, event):
  41         QLineEdit.paintEvent(self, event)
  42         if self.decimal_point:
  43              panel = QStyleOptionFrameV2()
  44              self.initStyleOption(panel)
  45              textRect = self.style().subElementRect(QStyle.SE_LineEditContents, panel, self)
  46              textRect.adjust(2, 0, -10, 0)
  47              painter = QPainter(self)
  48              painter.setPen(self.palette().brush(QPalette.Disabled, QPalette.Text).color())
  49              painter.drawText(textRect, Qt.AlignRight | Qt.AlignVCenter, self.base_unit())
  50
  51
  52     def numbify(self):
  53         text = unicode(self.text()).strip()
  54         if text == '!':
  55             self.is_shortcut = True
  56         pos = self.cursorPosition()
  57         chars = '0123456789'
  58         if not self.is_int: chars +='.'
  59         s = ''.join([i for i in text if i in chars])
  60         if not self.is_int:
  61             if '.' in s:
  62                 p = s.find('.')
  63                 s = s.replace('.','')
  64                 s = s[:p] + '.' + s[p:p+8]
  65         self.setText(s)
  66         self.setCursorPosition(pos)
  67
  68