Add 03-03-10

QLineEdit-添加行为-明密文切换案例

03-QtWidgets-常用控件/03-QLineEdit-单行文本编辑器/10-QLineEdit-自定义行为-明密文切换案例.py

@@ -0,0 +1,64 @@
+import sys
+
+from PySide6 import QtCore, QtGui, QtWidgets
+
+"""
+QLineEdit Action 案例
+单行文本编辑器可以在行首或行尾添加自定义的行为
+本案例为在编辑器尾部添加一个输入密码时的明文/掩码切换按钮
+
+.addAction(action: QAction, position: QLineEdit.ActionPosition)
+.addAction(icon: QIcon, position: QLineEdit.ActionPosition) -> QAction
+
+QLineEdit.ActionPosition枚举值具体有以下两种取值：
+QLineEdit.LeadingPosition      若布局从左至右则将行为添加至最左侧，反之则添加至最右侧
+QLineEdit.TrailingPosition     若布局从左至右则将行为添加至最右侧，反之则添加至最左侧
+
+"""
+
+
+class MyWidget(QtWidgets.QWidget):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.setWindowTitle("QLineEdit-案例")
+        self.resize(500, 300)
+        self.setup()
+
+    def setup(self) -> None:
+        """设置界面与功能"""
+
+        line_edit = QtWidgets.QLineEdit(self)
+        line_edit.resize(300, 30)
+        line_edit.move(100, 50)
+        line_edit.setEchoMode(QtWidgets.QLineEdit.Password)
+
+        eye_icon = QtGui.QIcon("../../Resources/Icons/FlatIcon-regular-rounded/eye.png")
+        eye_crossed_icon = QtGui.QIcon(
+            "../../Resources/Icons/FlatIcon-regular-rounded/eye-crossed.png"
+        )
+
+        # 创建行为，并将其触发连接到对应的功能槽函数
+        action = QtGui.QAction(line_edit)
+        action.setIcon(eye_crossed_icon)
+
+        @QtCore.Slot()
+        def switch():
+            """切换明文/密码的槽函数"""
+            if line_edit.echoMode() == QtWidgets.QLineEdit.Password:
+                line_edit.setEchoMode(QtWidgets.QLineEdit.Normal)
+                action.setIcon(eye_icon)
+            else:
+                line_edit.setEchoMode(QtWidgets.QLineEdit.Password)
+                action.setIcon(eye_crossed_icon)
+
+        action.triggered.connect(switch)  # type: ignore
+
+        # 添加行为
+        line_edit.addAction(action, QtWidgets.QLineEdit.TrailingPosition)
+
+
+if __name__ == "__main__":
+    app = QtWidgets.QApplication(sys.argv)
+    window = MyWidget()
+    window.show()
+    sys.exit(app.exec())