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from __future__ import annotations

from typing import Optional

from typing import Tuple

from PySide6 import QtGui

from PySide6 import QtWidgets

from PySide6.QtCore import Qt

class FloatLineEdit(QtWidgets.QLineEdit): # type: ignore

def __init__(self, parent: Optional[QtWidgets.QWidget] = None) -> None:

super().__init__(parent)

self.setValidator(FloatValidator())

def keyPressEvent(self, event: QtGui.QKeyEvent) -> None:

if event.key() == Qt.Key_Space:

event.ignore()

else:

super().keyPressEvent(event)

def value(self) -> float:

try:

return float(self.text())

except ValueError:

return 0.0

class FloatValidator(QtGui.QDoubleValidator): # type: ignore

def __init__(self, parent: Optional[QtGui.QObject] = None) -> None:

super().__init__(parent)

def validate(self, input_str: str, pos: int) -> Tuple[QtGui.QValidator.State, str, int]:

state, num, pos = super().validate(input_str, pos)

if state == QtGui.QValidator.Acceptable:

return QtGui.QValidator.Acceptable, num, pos

if str(num).count(".") > 1:

return QtGui.QValidator.Invalid, num, pos

if input_str[pos - 1] == ".":

return QtGui.QValidator.Acceptable, num, pos

return QtGui.QValidator.Invalid, num, pos