pyqt5利用pyqtDesigner实现登录界面

本文实例为大家分享了pyqt5利用pyqtDesigner实现登录界面的具体代码，供大家参考，具体内容如下

为便于操作 界面和逻辑分离

逻辑类：

import sys
import pymysql
from loginUI import *  //导入
from PyQt5.QtWidgets import *
from PyQt5 import QtWidgets, QtCore, QtGui
from PyQt5.QtCore import *
from PyQt5.QtGui import
class Login(QtWidgets.QDialog):
def __init__(self):
 super(Login, self).__init__()
 self.ui = Ui_login_Ui()
 self.ui.setupUi(self)

# self.setMinimumSize(QtCore.QSize(400, 200)) # 控制缩放范围
 # self.setMaximumSize(QtCore.QSize(400, 200))
 self.setWindowTitle("欢迎使用停车场管理系统")
 self.setFixedSize(self.width(), self.height())
 self.ui.labelTip.hide()
 self.ui.labelTip.setText("密码或用户名不能为空!")
 # 设置label字体
 labelFont = QFont()
 labelFont.setPixelSize(15)
 # 设置动态背景
 self.gif = QMovie('bg2.gif')
 self.ui.label_2.setMovie(self.gif)
 self.gif.start()
 # 这在label属性
 self.ui.labelTip.setStyleSheet(
  "QLabel{color:red;font-size:12px;font-weight:bold;font-family:Roman times;}"
        )
 self.ui.userLabel.setStyleSheet("QLabel{background:white;}"
    "QLabel{color:rgb(100,100,100,250);font-size:15px;font-weight:bold;font-family:Roman times;}"
    "QLabel:hover{color:rgb(300,300,300,120);}")
 self.ui.pwdlabel.setStyleSheet("QLabel{background:white;}"
    "QLabel{color:rgb(100,100,100,250);font-size:15px;font-weight:bold;font-family:Roman times;}"
    "QLabel:hover{color:rgb(300,300,300,120);}")
 self.ui.label.setStyleSheet("QLabel{background:white;}"
    "QLabel{color:rgb(100,100,100,250);font-size:15px;font-weight:bold;font-family:Roman times;}"
    "QLabel:hover{color:rgb(300,300,300,120);}")

self.ui.loginButton.setStyleSheet("QPushButton{color:black}"
           "QPushButton:hover{color:red}"
           "QPushButton{background-color:lightblue}"
           "QPushButton{border:2px}"
           "QPushButton{border-radius:10px}"
           "QPushButton{padding:2px 4px}")
 self.ui.registerButton.setStyleSheet("QPushButton{color:black}"
           "QPushButton:hover{color:red}"
           "QPushButton{background-color:lightgreen}"
           "QPushButton{border:2px}"
           "QPushButton{border-radius:10px}"
           "QPushButton{padding:2px 4px}")

palette = QPalette()
 icon = QPixmap('bg2.gif').scaled(800, 600)
 palette.setBrush(self.backgroundRole(), QBrush(icon))
 self.setPalette(palette)
 self.ui.userLabel.setFont(labelFont)
 self.ui.pwdlabel.setFont(labelFont)
 self.ui.label.setFont(labelFont)
 # 设置控件尺寸
 # self.ui.userlineEdit.setFrame(False)
 # self.ui.pwdlineEdit.setFrame(False)
 self.ui.pwdlineEdit.setEchoMode(QLineEdit.Password)# 输入框设为密码模式
 self.ui.pwdlineEdit.setClearButtonEnabled(True)
 self.ui.userlineEdit.setClearButtonEnabled(True)
 self.ui.userlineEdit.setFixedWidth(190)
 self.ui.userlineEdit.setFixedHeight(30)
 self.ui.pwdlineEdit.setFixedWidth(190)
 self.ui.pwdlineEdit.setFixedHeight(30)
 self.ui.comboBox.setFixedWidth(100)
 self.ui.comboBox.setFixedHeight(28)
 self.ui.loginButton.setFixedSize(75, 28)
 self.ui.registerButton.setFixedSize(75, 28)
 self.ui.loginButton.setShortcut('Enter') # shortcut key
 # 登陆的槽函数登陆按钮 最好写在init的析构函数中，避免链接多次产生异常
 self.ui.loginButton.clicked.connect(self.slotLogin)
 self.ui.registerButton.clicked.connect(self.slotRegister)
 self.ui.pushButton.clicked.connect(self.findPwd)

name = self.ui.userlineEdit.text()
 pwd = self.ui.pwdlineEdit.text()
 identity = self.ui.comboBox.currentIndex()
 identity = str(identity)
 sql = "select * from administrater where username = '" + name + "' and password = '" + pwd + "' and identity= '"+ identity +"' "
 db = PyMySQLHelper()
 db.selectALL(sql)

def keyPressEvent(self, event):
 if event.key() == QtCore.Qt.Key_Enter:
  self.slotLogin()
def findPwd(self):
 # self.accept()
 self.u = FPwd_ui()
 self.u.show()
 # self.ui.exec()
def slotLogin(self):
 # # 获得登录输入
 name = self.ui.userlineEdit.text()
 pwd = self.ui.pwdlineEdit.text()
 print(name)
 db = PyMySQLHelper()
 identity = self.ui.comboBox.currentIndex() # 获取下标
 identity = str(identity)

if name != '' and pwd != '':
  if identity == '0':

sql = "select * from administrater where username = '" + name + "' and " \
                   "password = '" + pwd + "' and identity= '" + identity + "' "
   print(sql)
   # cursor.execute(sql)
   # results = cursor.fetchall()
   results = db.selectALL(sql)

if results:
    self.ui1 = Finance()
    # self.ui1.exec()
    self.ui1.show()
    self.close()
   else:
    OK = QMessageBox.warning(self, ("警告"), ("""账号或密码错误！"""))
   # cursor.close()
   # conn.close()
  elif identity == '1':

sql = "select * from administrater where username = '" + name + "' and " \
                   "password = '" + pwd + "' and identity= '" + identity + "' "
   print(sql)
   # cursor.execute(sql)
   # results = cursor.fetchall()
   results = db.selectALL(sql)
   if results:
    self.ui2 = InfoManage()
    self.ui2.show()
    self.close()
   else:
    OK = QMessageBox.warning(self, ("警告"), ("""账号或密码错误！"""))

elif identity == '2':
   sql = "select * from administrater where username = '" + name + "' and " \
                   "password = '" + pwd + "' and identity= '" + identity + "' "
   print(sql)

results = db.selectALL(sql)
   # print(identity)

if results:
    self.uu = SeatManage()
    self.uu.exec()
    self.close()
   else:
    OK = QMessageBox.warning(self, ("警告"), ("""账号或密码错误！"""))
  elif name == 'admin' and pwd == '123' and identity == '3':
   self.a = Admin()
   self.a.show()
   self.close()

else:
  if name == '':
   OK = QMessageBox.warning(self, ("警告"), ("""请输入账号！"""))
  if pwd == '':
   OK = QMessageBox.warning(self, ("警告"), ("""请输入密码！"""))
 # cursor.close()
 # conn.close()
def slotRegister(self):
 self.i = reUi() # self.i的窗口命名不能重复
 self.i.exec_()

if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
my = Login()
my.show()
sys.exit(app.exec_())

界面类：

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_login_Ui(object):
def setupUi(self, login_Ui):
 login_Ui.setObjectName("login_Ui")
 login_Ui.resize(581, 533)
 self.gridLayoutWidget = QtWidgets.QWidget(login_Ui)
 self.gridLayoutWidget.setGeometry(QtCore.QRect(160, 330, 295, 141))
 self.gridLayoutWidget.setObjectName("gridLayoutWidget")
 self.gridLayout = QtWidgets.QGridLayout(self.gridLayoutWidget)
 self.gridLayout.setContentsMargins(0, 0, 0, 0)
 self.gridLayout.setObjectName("gridLayout")
 self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
 self.horizontalLayout_2.setObjectName("horizontalLayout_2")
 self.loginButton = QtWidgets.QPushButton(self.gridLayoutWidget)
 self.loginButton.setObjectName("loginButton")
 self.horizontalLayout_2.addWidget(self.loginButton)
 self.registerButton = QtWidgets.QPushButton(self.gridLayoutWidget)
 self.registerButton.setObjectName("registerButton")
 self.horizontalLayout_2.addWidget(self.registerButton)
 self.pushButton = QtWidgets.QPushButton(self.gridLayoutWidget)
 self.pushButton.setObjectName("pushButton")
 self.horizontalLayout_2.addWidget(self.pushButton)
 self.gridLayout.addLayout(self.horizontalLayout_2, 4, 1, 1, 1)
 self.userlineEdit = QtWidgets.QLineEdit(self.gridLayoutWidget)
 self.userlineEdit.setObjectName("userlineEdit")
 self.gridLayout.addWidget(self.userlineEdit, 0, 1, 1, 1)
 self.userLabel = QtWidgets.QLabel(self.gridLayoutWidget)
 self.userLabel.setObjectName("userLabel")
 self.gridLayout.addWidget(self.userLabel, 0, 0, 1, 1)
 self.labelTip = QtWidgets.QLabel(self.gridLayoutWidget)
 self.labelTip.setObjectName("labelTip")
 self.gridLayout.addWidget(self.labelTip, 3, 1, 1, 1)
 self.pwdlineEdit = QtWidgets.QLineEdit(self.gridLayoutWidget)
 self.pwdlineEdit.setObjectName("pwdlineEdit")
 self.gridLayout.addWidget(self.pwdlineEdit, 1, 1, 1, 1)
 self.pwdlabel = QtWidgets.QLabel(self.gridLayoutWidget)
 self.pwdlabel.setObjectName("pwdlabel")
 self.gridLayout.addWidget(self.pwdlabel, 1, 0, 1, 1)
 self.comboBox = QtWidgets.QComboBox(self.gridLayoutWidget)
 self.comboBox.setObjectName("comboBox")
 self.comboBox.addItem("")
 self.comboBox.addItem("")
 self.comboBox.addItem("")
 self.comboBox.addItem("")
 self.gridLayout.addWidget(self.comboBox, 2, 1, 1, 1)
 self.label = QtWidgets.QLabel(self.gridLayoutWidget)
 self.label.setObjectName("label")
 self.gridLayout.addWidget(self.label, 2, 0, 1, 1)
 self.label_2 = QtWidgets.QLabel(login_Ui)
 self.label_2.setGeometry(QtCore.QRect(-10, 0, 601, 321))
 self.label_2.setText("")
 self.label_2.setObjectName("label_2")

self.retranslateUi(login_Ui)
 QtCore.QMetaObject.connectSlotsByName(login_Ui)

def retranslateUi(self, login_Ui):
 _translate = QtCore.QCoreApplication.translate
 login_Ui.setWindowTitle(_translate("login_Ui", "Form"))
 self.loginButton.setText(_translate("login_Ui", "登 陆"))
 self.registerButton.setText(_translate("login_Ui", "注 册"))
 self.pushButton.setText(_translate("login_Ui", "找回密码"))
 self.userLabel.setText(_translate("login_Ui", " 账 户"))
 self.labelTip.setText(_translate("login_Ui", "密码或用户名错误"))
 self.pwdlabel.setText(_translate("login_Ui", " 密 码"))
 self.comboBox.setItemText(0, _translate("login_Ui", "财务管理员"))
 self.comboBox.setItemText(1, _translate("login_Ui", "信息管理员"))
 self.comboBox.setItemText(2, _translate("login_Ui", "停车场管理员"))
 self.comboBox.setItemText(3, _translate("login_Ui", "超级管理员"))
 self.label.setText(_translate("login_Ui", " 请选择"))

具体代码：pyqt5实现登录界面

来源：https://blog.csdn.net/qq_32973061/article/details/81749982