116 lines
3.4 KiB
Python
116 lines
3.4 KiB
Python
# -*- coding: utf-8 -*-
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from PyQt5.QtCore import *
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from PyQt5.QtGui import *
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from PyQt5.QtWidgets import (QLineEdit, QStyle, QStyleOptionFrame)
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from decimal import Decimal
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from electrum_bitcoinprivate.util import format_satoshis_plain
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class MyLineEdit(QLineEdit):
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frozen = pyqtSignal()
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def setFrozen(self, b):
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self.setReadOnly(b)
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self.setFrame(not b)
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self.frozen.emit()
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class AmountEdit(MyLineEdit):
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shortcut = pyqtSignal()
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def __init__(self, base_unit, is_int = False, parent=None):
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QLineEdit.__init__(self, parent)
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# This seems sufficient for hundred-BTC amounts with 8 decimals
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self.setFixedWidth(180)
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self.base_unit = base_unit
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self.textChanged.connect(self.numbify)
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self.is_int = is_int
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self.is_shortcut = False
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self.help_palette = QPalette()
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def decimal_point(self):
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return 8
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def numbify(self):
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text = self.text().strip()
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if text == '!':
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self.shortcut.emit()
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return
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pos = self.cursorPosition()
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chars = '0123456789'
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if not self.is_int: chars +='.'
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s = ''.join([i for i in text if i in chars])
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if not self.is_int:
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if '.' in s:
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p = s.find('.')
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s = s.replace('.','')
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s = s[:p] + '.' + s[p:p+self.decimal_point()]
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self.setText(s)
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# setText sets Modified to False. Instead we want to remember
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# if updates were because of user modification.
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self.setModified(self.hasFocus())
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self.setCursorPosition(pos)
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def paintEvent(self, event):
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QLineEdit.paintEvent(self, event)
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if self.base_unit:
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panel = QStyleOptionFrame()
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self.initStyleOption(panel)
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textRect = self.style().subElementRect(QStyle.SE_LineEditContents, panel, self)
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textRect.adjust(2, 0, -10, 0)
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painter = QPainter(self)
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painter.setPen(self.help_palette.brush(QPalette.Disabled, QPalette.Text).color())
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painter.drawText(textRect, Qt.AlignRight | Qt.AlignVCenter, self.base_unit())
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def get_amount(self):
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try:
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return (int if self.is_int else Decimal)(str(self.text()))
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except:
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return None
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def setAmount(self, x):
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self.setText("%d"%x)
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class BTCAmountEdit(AmountEdit):
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def __init__(self, decimal_point, is_int = False, parent=None):
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AmountEdit.__init__(self, self._base_unit, is_int, parent)
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self.decimal_point = decimal_point
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def _base_unit(self):
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p = self.decimal_point()
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if p == 8:
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return 'BTCP'
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if p == 5:
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return 'mBTCP'
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if p == 2:
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return 'uBTCP'
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raise Exception('Unknown base unit')
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def get_amount(self):
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try:
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x = Decimal(str(self.text()))
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except:
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return None
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p = pow(10, self.decimal_point())
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return int( p * x )
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def setAmount(self, amount):
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if amount is None:
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self.setText(" ") # Space forces repaint in case units changed
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else:
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self.setText(format_satoshis_plain(amount, self.decimal_point()))
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class FeerateEdit(BTCAmountEdit):
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def _base_unit(self):
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return 'sat/kB'
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def get_amount(self):
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sat_per_kb_amount = BTCAmountEdit.get_amount(self)
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if sat_per_kb_amount is None:
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return None
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return sat_per_kb_amount
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