AaronFiore/electrum
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qt BTCAmountEdit: clamp field to <=21 million bitcoins

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fixes https://github.com/spesmilo/electrum/issues/5223
This commit is contained in:
SomberNight
2022-10-19 17:58:05 +00:00
parent 1f5ab5cb8d
commit c5d17183f7
1 changed files with 19 additions and 6 deletions
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25
electrum/gui/qt/amountedit.py
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@@ -11,6 +11,10 @@ from .util import char_width_in_lineedit, ColorScheme
from electrum.util import (format_satoshis_plain, decimal_point_to_base_unit_name,
FEERATE_PRECISION, quantize_feerate)
from electrum.bitcoin import COIN, TOTAL_COIN_SUPPLY_LIMIT_IN_BTC
_NOT_GIVEN = object() # sentinel value
class FreezableLineEdit(QLineEdit):
@@ -38,7 +42,7 @@ class SizedFreezableLineEdit(FreezableLineEdit):
class AmountEdit(SizedFreezableLineEdit):
shortcut = pyqtSignal()
def __init__(self, base_unit, is_int=False, parent=None):
def __init__(self, base_unit, is_int=False, parent=None, *, max_amount=None):
# This seems sufficient for hundred-BTC amounts with 8 decimals
width = 16 * char_width_in_lineedit()
super().__init__(width=width, parent=parent)
@@ -47,6 +51,7 @@ class AmountEdit(SizedFreezableLineEdit):
self.is_int = is_int
self.is_shortcut = False
self.extra_precision = 0
self.max_amount = max_amount
def decimal_point(self):
return 8
@@ -68,6 +73,9 @@ class AmountEdit(SizedFreezableLineEdit):
p = s.find('.')
s = s.replace('.','')
s = s[:p] + '.' + s[p:p+self.max_precision()]
if self.max_amount:
if (amt := self._get_amount_from_text(s)) and amt >= self.max_amount:
s = self._get_text_from_amount(self.max_amount)
self.setText(s)
# setText sets Modified to False. Instead we want to remember
# if updates were because of user modification.
@@ -92,7 +100,10 @@ class AmountEdit(SizedFreezableLineEdit):
return None
def get_amount(self) -> Union[None, Decimal, int]:
return self._get_amount_from_text(str(self.text()))
amt = self._get_amount_from_text(str(self.text()))
if self.max_amount and amt and amt >= self.max_amount:
return self.max_amount
return amt
def _get_text_from_amount(self, amount) -> str:
return "%d" % amount
@@ -104,8 +115,10 @@ class AmountEdit(SizedFreezableLineEdit):
class BTCAmountEdit(AmountEdit):
def __init__(self, decimal_point, is_int=False, parent=None):
AmountEdit.__init__(self, self._base_unit, is_int, parent)
def __init__(self, decimal_point, is_int=False, parent=None, *, max_amount=_NOT_GIVEN):
if max_amount is _NOT_GIVEN:
max_amount = TOTAL_COIN_SUPPLY_LIMIT_IN_BTC * COIN
AmountEdit.__init__(self, self._base_unit, is_int, parent, max_amount=max_amount)
self.decimal_point = decimal_point
def _base_unit(self):
@@ -141,8 +154,8 @@ class BTCAmountEdit(AmountEdit):
class FeerateEdit(BTCAmountEdit):
def __init__(self, decimal_point, is_int=False, parent=None):
super().__init__(decimal_point, is_int, parent)
def __init__(self, decimal_point, is_int=False, parent=None, *, max_amount=_NOT_GIVEN):
super().__init__(decimal_point, is_int, parent, max_amount=max_amount)
self.extra_precision = FEERATE_PRECISION
def _base_unit(self):