108 lines
3.9 KiB
Python
108 lines
3.9 KiB
Python
# from https://github.com/trezor/trezor-firmware/blob/3f1d2059ca140788dab8726778f05cedbea20bc4/python/src/trezorlib/qt/pinmatrix.py
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#
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# This file is part of the Trezor project.
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#
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# Copyright (C) 2012-2022 SatoshiLabs and contributors
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#
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# This library is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License version 3
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# as published by the Free Software Foundation.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the License along with this library.
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# If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>.
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import math
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from typing import Any
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from PyQt6.QtCore import QRegularExpression, Qt
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from PyQt6.QtGui import QRegularExpressionValidator
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from PyQt6.QtWidgets import (
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QGridLayout, QHBoxLayout, QLabel, QLineEdit, QPushButton, QSizePolicy, QVBoxLayout, QWidget
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)
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class PinButton(QPushButton):
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def __init__(self, password: QLineEdit, encoded_value: int) -> None:
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super(PinButton, self).__init__("?")
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self.password = password
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self.encoded_value = encoded_value
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self.clicked.connect(self._pressed)
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def _pressed(self) -> None:
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self.password.setText(self.password.text() + str(self.encoded_value))
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self.password.setFocus()
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class PinMatrixWidget(QWidget):
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"""
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Displays widget with nine blank buttons and password box.
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Encodes button clicks into sequence of numbers for passing
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into PinAck messages of Trezor.
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show_strength=True may be useful for entering new PIN
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"""
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def __init__(self, show_strength: bool = True, parent: Any = None) -> None:
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super(PinMatrixWidget, self).__init__(parent)
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self.password = QLineEdit()
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self.password.setValidator(QRegularExpressionValidator(QRegularExpression("[1-9]+"), None))
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self.password.setEchoMode(QLineEdit.EchoMode.Password)
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self.password.textChanged.connect(self._password_changed)
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self.strength = QLabel()
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self.strength.setMinimumWidth(75)
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self.strength.setAlignment(Qt.AlignmentFlag.AlignCenter)
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self._set_strength(0)
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grid = QGridLayout()
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grid.setSpacing(0)
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for y in range(3)[::-1]:
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for x in range(3):
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button = PinButton(self.password, x + y * 3 + 1)
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button.setSizePolicy(QSizePolicy.Policy.Expanding, QSizePolicy.Policy.Expanding)
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button.setFocusPolicy(Qt.FocusPolicy.NoFocus)
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grid.addWidget(button, 3 - y, x)
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hbox = QHBoxLayout()
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hbox.addWidget(self.password)
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if show_strength:
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hbox.addWidget(self.strength)
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vbox = QVBoxLayout()
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vbox.addLayout(grid)
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vbox.addLayout(hbox)
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self.setLayout(vbox)
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def _set_strength(self, strength: float) -> None:
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if strength < 3000:
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self.strength.setText("weak")
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self.strength.setStyleSheet("QLabel { color : #d00; }")
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elif strength < 60000:
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self.strength.setText("fine")
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self.strength.setStyleSheet("QLabel { color : #db0; }")
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elif strength < 360000:
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self.strength.setText("strong")
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self.strength.setStyleSheet("QLabel { color : #0a0; }")
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else:
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self.strength.setText("ULTIMATE")
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self.strength.setStyleSheet("QLabel { color : #000; font-weight: bold;}")
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def _password_changed(self, password: Any) -> None:
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self._set_strength(self.get_strength())
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def get_strength(self) -> float:
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digits = len(set(str(self.password.text())))
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strength = math.factorial(9) / math.factorial(9 - digits)
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return strength
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def get_value(self) -> str:
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return self.password.text()
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