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https://github.com/muziing/PySide6-Code-Tutorial.git
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84 lines
3.2 KiB
Python
84 lines
3.2 KiB
Python
import sys
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from PySide6 import QtCore, QtWidgets
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"""
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QLineEdit 显示模式
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默认显示模式为正常，即用户输入什么就显示什么
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也可以通过设置输入模式，使用户的输入被隐藏，常用于输入密码的场景
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改变显示模式不会影响编辑器中真实存储的文字，仍可正常获取
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.setEchoMode(QLineEdit.EchoMode) 设置显示模式
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.echoMode() -> QLineEdit.EchoMode 获取显示模式
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QLineEdit.EchoMode枚举值具体有如下4种：
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https://doc.qt.io/qt-6/qlineedit.html#EchoMode-enum
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QLineEdit.Normal 按字符输入时的形式显示。默认值。
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QLineEdit.NoEcho 不显示任何内容。常见场景：密码的长度也需要被保护，例如Linux输入密码
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QLineEdit.Password 显示时用平台决定的密码掩码字符替代真实输入的字符
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QLineEdit.PasswordEchoOnEdit 当字符正在被编辑时显示，否则行为与Password相同()
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"""
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class MyWidget(QtWidgets.QWidget):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.setWindowTitle("QLineEdit-输入模式")
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self.resize(400, 300)
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self.setup_ui()
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self.test_echo_mode()
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def setup_ui(self) -> None:
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"""设置界面"""
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label_1 = QtWidgets.QLabel("用户名")
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label_2 = QtWidgets.QLabel("密码")
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label_3 = QtWidgets.QLabel("编辑时可见的密码")
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label_4 = QtWidgets.QLabel("长度也保密的密码")
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self.line_edit_1 = QtWidgets.QLineEdit()
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self.line_edit_2 = QtWidgets.QLineEdit()
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self.line_edit_3 = QtWidgets.QLineEdit()
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self.line_edit_4 = QtWidgets.QLineEdit()
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self.button = QtWidgets.QPushButton("打印输入内容")
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# 使用布局管理器布局控件
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# 首次学习时可以略过本段代码
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form_layout = QtWidgets.QFormLayout()
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form_layout.addRow(label_1, self.line_edit_1)
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form_layout.addRow(label_2, self.line_edit_2)
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form_layout.addRow(label_3, self.line_edit_3)
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form_layout.addRow(label_4, self.line_edit_4)
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main_layout = QtWidgets.QVBoxLayout()
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main_layout.addLayout(form_layout)
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main_layout.addWidget(self.button)
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self.setLayout(main_layout)
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def test_echo_mode(self) -> None:
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"""测试显示模式功能"""
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self.line_edit_1.setEchoMode(QtWidgets.QLineEdit.Normal)
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self.line_edit_2.setEchoMode(QtWidgets.QLineEdit.Password)
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self.line_edit_3.setEchoMode(QtWidgets.QLineEdit.PasswordEchoOnEdit)
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self.line_edit_4.setEchoMode(QtWidgets.QLineEdit.NoEcho)
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@QtCore.Slot()
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def test_slot():
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"""获取各编辑器的文本并打印到终端"""
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print(f"用户名为：{self.line_edit_1.text()}")
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print(f"密码为：{self.line_edit_2.text()}")
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print(f"编辑时可见的密码为：{self.line_edit_3.text()}")
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print(f"长度也保密的密码为：{self.line_edit_4.text()}")
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self.button.clicked.connect(test_slot) # type: ignore
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if __name__ == "__main__":
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app = QtWidgets.QApplication(sys.argv)
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window = MyWidget()
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window.show()
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sys.exit(app.exec())
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