效果图

代码

本例只要注册，暂时没有登录。

# -*- coding: utf-8 -*-
'''**************************************************************************
版本：1.0
内容：注册界面设计，分文件
时间：2021.9.24
作者：狄云
***************************************************************************'''import pymysql
from PyQt5.QtCore import Qt, pyqtSignal, QPoint
from PyQt5.QtGui import QFont, QEnterEvent, QPainter, QColor, QPen
from PyQt5.QtWidgets import QHBoxLayout, QLabel,QSpacerItem, QSizePolicy
from PyQt5.QtWidgets import QWidget, QVBoxLayout, QPushButton, QTextEdit
from PyQt5 import QtGui
import sysfrom PyQt5.QtCore import QSize
from PyQt5.QtWidgets import QApplication
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QComboBox
from PyQt5.QtWidgets import QGridLayout
from PyQt5.QtWidgets import QLineEdit
from PyQt5.QtWidgets import QLabel
from PyQt5.QtGui import QIcon
from PyQt5.QtWidgets import QWidget, QVBoxLayout, QPushButton, QTextEdit
from PyQt5 import QtWidgets
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5 import QtGui
from PyQt5.QtGui import QFontStyleSheet = """
/*最小化最大化关闭按钮通用默认背景*/
#buttonMinimum,#buttonMaximum,#buttonClose {border: none;
}
#buttonClose,#buttonMaximum,#buttonMinimum{color:grey;
}
/*悬停*/
#buttonMinimum:hover,#buttonMaximum:hover {color: white;
}
#buttonClose:hover {color: white;
}
/*鼠标按下不放*/
#buttonMinimum:pressed,#buttonMaximum:pressed {color:grey;
}
#buttonClose:pressed {color: white;}
"""
class TitleBar(QWidget):# 窗口最小化信号windowMinimumed = pyqtSignal()# 窗口最大化信号windowMaximumed = pyqtSignal()# 窗口还原信号windowNormaled = pyqtSignal()# 窗口关闭信号windowClosed = pyqtSignal()# 窗口移动windowMoved = pyqtSignal(QPoint)def __init__(self, *args, **kwargs):super(TitleBar, self).__init__(*args, **kwargs)self.setStyleSheet(StyleSheet)self.mPos = Noneself.iconSize = 20  # 图标的默认大小# 布局layout = QHBoxLayout(self, spacing=0)layout.setContentsMargins(0, 0, 0, 0)# 窗口图标self.iconLabel = QLabel(self)
#         self.iconLabel.setScaledContents(True)layout.addWidget(self.iconLabel)# 窗口标题self.titleLabel = QLabel(self)self.titleLabel.setStyleSheet("color:grey")self.titleLabel.setMargin(2)layout.addWidget(self.titleLabel)# 中间伸缩条layout.addSpacerItem(QSpacerItem(40, 20, QSizePolicy.Expanding, QSizePolicy.Minimum))# 利用Webdings字体来显示图标font = self.font() or QFont()font.setFamily('Webdings')# 最小化按钮self.buttonMinimum = QPushButton('0', self, clicked=self.windowMinimumed.emit, font=font, objectName='buttonMinimum')layout.addWidget(self.buttonMinimum)# 最大化/还原按钮self.buttonMaximum = QPushButton('1', self, clicked=self.showMaximized, font=font, objectName='buttonMaximum')layout.addWidget(self.buttonMaximum)# 关闭按钮self.buttonClose = QPushButton('r', self, clicked=self.windowClosed.emit, font=font, objectName='buttonClose')layout.addWidget(self.buttonClose)# 初始高度self.setHeight()def showMaximized(self):if self.buttonMaximum.text() == '1':# 最大化self.buttonMaximum.setText('2')self.windowMaximumed.emit()else:  # 还原self.buttonMaximum.setText('1')self.windowNormaled.emit()def setHeight(self, height=38):"""设置标题栏高度"""self.setMinimumHeight(height)self.setMaximumHeight(height)# 设置右边按钮的大小self.buttonMinimum.setMinimumSize(height, height)self.buttonMinimum.setMaximumSize(height, height)self.buttonMaximum.setMinimumSize(height, height)self.buttonMaximum.setMaximumSize(height, height)self.buttonClose.setMinimumSize(height, height)self.buttonClose.setMaximumSize(height, height)def setTitle(self, title):"""设置标题"""self.titleLabel.setText(title)def setIcon(self, icon):"""设置图标"""self.iconLabel.setPixmap(icon.pixmap(self.iconSize, self.iconSize))def setIconSize(self, size):"""设置图标大小"""self.iconSize = sizedef enterEvent(self, event):self.setCursor(Qt.ArrowCursor)super(TitleBar, self).enterEvent(event)def mouseDoubleClickEvent(self, event):super(TitleBar, self).mouseDoubleClickEvent(event)self.showMaximized()def mousePressEvent(self, event):"""鼠标点击事件"""if event.button() == Qt.LeftButton:self.mPos = event.pos()event.accept()def mouseReleaseEvent(self, event):'''鼠标弹起事件'''self.mPos = Noneevent.accept()def mouseMoveEvent(self, event):if event.buttons() == Qt.LeftButton and self.mPos:self.windowMoved.emit(self.mapToGlobal(event.pos() - self.mPos))event.accept()# 枚举左上右下以及四个定点
Left, Top, Right, Bottom, LeftTop, RightTop, LeftBottom, RightBottom = range(8)class FramelessWindow(QWidget):# 四周边距Margins = 5def __init__(self, *args, **kwargs):super(FramelessWindow, self).__init__(*args, **kwargs)palette1 = QtGui.QPalette()palette1.setBrush(self.backgroundRole(), QtGui.QBrush(QtGui.QPixmap('./input/log0.jpg')))  # 设置登录背景图片self.setPalette(palette1)self.setAutoFillBackground(True)self.setGeometry(300, 300, 250, 150)self._pressed = Falseself.Direction = None# 无边框self.setWindowFlags(Qt.FramelessWindowHint)  # 隐藏边框# 鼠标跟踪self.setMouseTracking(True)# 布局layout = QVBoxLayout(self, spacing=0)layout.setContentsMargins(0,0,0,0)# 标题栏self.titleBar = TitleBar(self)layout.addWidget(self.titleBar)# 信号槽self.titleBar.windowMinimumed.connect(self.showMinimized)self.titleBar.windowMaximumed.connect(self.showMaximized)self.titleBar.windowNormaled.connect(self.showNormal)self.titleBar.windowClosed.connect(self.close)self.titleBar.windowMoved.connect(self.move)self.windowTitleChanged.connect(self.titleBar.setTitle)self.windowIconChanged.connect(self.titleBar.setIcon)#def setTitleBarHeight(self, height=38):def setTitleBarHeight(self, height=50):"""设置标题栏高度"""self.titleBar.setHeight(height)def setIconSize(self, size):"""设置图标的大小"""self.titleBar.setIconSize(size)def setWidget(self, widget):"""设置自己的控件"""if hasattr(self, '_widget'):returnself._widget = widget# 设置默认背景颜色,否则由于受到父窗口的影响导致透明self._widget.setAutoFillBackground(True)self._widget.installEventFilter(self)self.layout().addWidget(self._widget)def move(self, pos):if self.windowState() == Qt.WindowMaximized or self.windowState() == Qt.WindowFullScreen:# 最大化或者全屏则不允许移动returnsuper(FramelessWindow, self).move(pos)def showMaximized(self):"""最大化,要去除上下左右边界,如果不去除则边框地方会有空隙"""super(FramelessWindow, self).showMaximized()self.layout().setContentsMargins(0, 0, 0, 0)def showNormal(self):"""还原,要保留上下左右边界,否则没有边框无法调整"""super(FramelessWindow, self).showNormal()self.layout().setContentsMargins(0, 0, 0, 0)def eventFilter(self, obj, event):"""事件过滤器,用于解决鼠标进入其它控件后还原为标准鼠标样式"""if isinstance(event, QEnterEvent):self.setCursor(Qt.ArrowCursor)return super(FramelessWindow, self).eventFilter(obj, event)def paintEvent(self, event):"""由于是全透明背景窗口,重绘事件中绘制透明度为1的难以发现的边框,用于调整窗口大小"""super(FramelessWindow, self).paintEvent(event)painter = QPainter(self)painter.setPen(QPen(QColor(255, 255, 255, 1), 2 * self.Margins))painter.drawRect(self.rect())def mousePressEvent(self, event):"""鼠标点击事件"""super(FramelessWindow, self).mousePressEvent(event)if event.button() == Qt.LeftButton:self._mpos = event.pos()self._pressed = Truedef mouseReleaseEvent(self, event):'''鼠标弹起事件'''super(FramelessWindow, self).mouseReleaseEvent(event)self._pressed = Falseself.Direction = Nonedef mouseMoveEvent(self, event):"""鼠标移动事件"""super(FramelessWindow, self).mouseMoveEvent(event)pos = event.pos()xPos, yPos = pos.x(), pos.y()wm, hm = self.width() - self.Margins, self.height() - self.Marginsif self.isMaximized() or self.isFullScreen():self.Direction = Noneself.setCursor(Qt.ArrowCursor)returnif event.buttons() == Qt.LeftButton and self._pressed:self._resizeWidget(pos)returnif xPos <= self.Margins and yPos <= self.Margins:# 左上角self.Direction = LeftTopself.setCursor(Qt.SizeFDiagCursor)elif wm <= xPos <= self.width() and hm <= yPos <= self.height():# 右下角self.Direction = RightBottomself.setCursor(Qt.SizeFDiagCursor)elif wm <= xPos and yPos <= self.Margins:# 右上角self.Direction = RightTopself.setCursor(Qt.SizeBDiagCursor)elif xPos <= self.Margins and hm <= yPos:# 左下角self.Direction = LeftBottomself.setCursor(Qt.SizeBDiagCursor)elif 0 <= xPos <= self.Margins and self.Margins <= yPos <= hm:# 左边self.Direction = Leftself.setCursor(Qt.SizeHorCursor)elif wm <= xPos <= self.width() and self.Margins <= yPos <= hm:# 右边self.Direction = Rightself.setCursor(Qt.SizeHorCursor)elif self.Margins <= xPos <= wm and 0 <= yPos <= self.Margins:# 上面self.Direction = Topself.setCursor(Qt.SizeVerCursor)elif self.Margins <= xPos <= wm and hm <= yPos <= self.height():# 下面self.Direction = Bottomself.setCursor(Qt.SizeVerCursor)def _resizeWidget(self, pos):"""调整窗口大小"""if self.Direction == None:returnmpos = pos - self._mposxPos, yPos = mpos.x(), mpos.y()geometry = self.geometry()x, y, w, h = geometry.x(), geometry.y(), geometry.width(), geometry.height()if self.Direction == LeftTop:  # 左上角if w - xPos > self.minimumWidth():x += xPosw -= xPosif h - yPos > self.minimumHeight():y += yPosh -= yPoselif self.Direction == RightBottom:  # 右下角if w + xPos > self.minimumWidth():w += xPosself._mpos = posif h + yPos > self.minimumHeight():h += yPosself._mpos = poselif self.Direction == RightTop:  # 右上角if h - yPos > self.minimumHeight():y += yPosh -= yPosif w + xPos > self.minimumWidth():w += xPosself._mpos.setX(pos.x())elif self.Direction == LeftBottom:  # 左下角if w - xPos > self.minimumWidth():x += xPosw -= xPosif h + yPos > self.minimumHeight():h += yPosself._mpos.setY(pos.y())elif self.Direction == Left:  # 左边if w - xPos > self.minimumWidth():x += xPosw -= xPoselse:returnelif self.Direction == Right:  # 右边if w + xPos > self.minimumWidth():w += xPosself._mpos = poselse:returnelif self.Direction == Top:  # 上面if h - yPos > self.minimumHeight():y += yPosh -= yPoselse:returnelif self.Direction == Bottom:  # 下面if h + yPos > self.minimumHeight():h += yPosself._mpos = poselse:returnself.setGeometry(x, y, w, h)StyleSheet_2 = """
QComboBox{height: 20px;border-radius: 4px;border: 1px solid rgb(111, 156, 207);background: white;
}
QComboBox:enabled{color: grey;
}
QComboBox:!enabled {color: rgb(80, 80, 80);
}
QComboBox:enabled:hover, QComboBox:enabled:focus {color: rgb(51, 51, 51);
}
QComboBox::drop-down {background: transparent;
}
QComboBox::drop-down:hover {background: lightgrey;
}QComboBox QAbstractItemView {border: 1px solid rgb(111, 156, 207);background: white;outline: none;
}QLineEdit {border-radius: 4px;height: 20px;border: 1px solid rgb(111, 156, 207);background: white;
}
QLineEdit:enabled {color: rgb(84, 84, 84);
}
QLineEdit:enabled:hover, QLineEdit:enabled:focus {color: rgb(51, 51, 51);
}
QLineEdit:!enabled {color: rgb(80, 80, 80);
}"""   #QComobox和QLineEdite的样式StyleSheet_btn = """
QPushButton{height:30px;background-color: transparent;color: grey;border: 2px solid #555555;border-radius: 6px;}
QPushButton:hover {background-color: blue;border-radius: 6px;}
"""  #登录Button的样式class regist(QWidget):'''登录窗口'''def __init__(self, *args, **kwargs):super(regist, self).__init__()self._layout = QVBoxLayout(spacing=0)self._layout.setContentsMargins(0, 0, 0, 0)self.setAutoFillBackground(True)self.setWindowOpacity(0.9)#透明度self.setLayout(self._layout)self._setup_ui()def _setup_ui(self):self.main_layout = QGridLayout()self.main_layout.setAlignment(Qt.AlignCenter)name_label = QLabel('账号：')name_label.setStyleSheet("color:black;")#设置颜色name_label.setFont(QFont("SimSun", 13, 50))#设置字体及大小 第一个参数是字体（微软雅黑），第二个是字体大小，第三个是加粗（50代表正常）passwd_label = QLabel('密码：')passwd_label.setStyleSheet("color:black;")passwd_label.setFont(QFont("SimSun", 13, 50))self.name_box = QLineEdit()self.passwd_box = QLineEdit()self.passwd_box.setEchoMode(QLineEdit.Password)self.name_box.setStyleSheet(StyleSheet_2)self.passwd_box.setStyleSheet(StyleSheet_2)label = QLabel()login_btn = QPushButton("确认提交")login_btn.setStyleSheet(StyleSheet_btn)login_btn.setStyleSheet("color:red;")login_btn.setFont(QFont("Microsoft YaHei", 15, 50))self.main_layout.addWidget(name_label,0,0,1,1)    #坐标（0，0）的组件占用一行一列self.main_layout.addWidget(passwd_label,1,0,1,1)self.main_layout.addWidget(self.name_box,0,1,1,2)self.main_layout.addWidget(self.passwd_box,1,1,1, 2)self.main_layout.addWidget(label,3,0,1,3)self.main_layout.addWidget(login_btn,4,0,1,3)self._layout.addLayout(self.main_layout)self.main_layout.addWidget(name_label, 0, 0, 1, 1)  # 坐标（0，0）的组件占用一行一列self.main_layout.addWidget(passwd_label, 1, 0, 1, 1)self.main_layout.addWidget(self.name_box, 0, 1, 1, 2)self.main_layout.addWidget(self.passwd_box, 1, 1, 1, 2)self.main_layout.addWidget(label, 3, 0, 1, 3)self._layout.addLayout(self.main_layout)# 绑定按钮事件login_btn.clicked.connect(self.insert_Mysql_userinfo)# 获取连接def get_Mysql_conn(self):try:config = {"host": "localhost","user": "root","password": "root","database": "test_0505"}self.conn = pymysql.connect(**config)except pymysql.Error as e:print('Error: %s' % e)# 关闭连接def close_Mysql_conn(self):try:if self.conn:self.conn.close()except pymysql.Error as e:print('Error: %s' % e)# 获取用户信息（登录用）def get_Mysql_userinfo(self):self.get_Mysql_conn()sql = ' SELECT * FROM userinfo' #这里我的登录用户头叫userinfo ，每个人的数据库不同，在建立时初始化。# 使用cursor()方法获取操作游标cursor = self.conn.cursor()# 使用execute()方法执行SQL语句cursor.execute(sql)# 使用fetchall()方法获取全部数据result = cursor.fetchall()# 将数据用字典形式存储于resultresult = [dict(zip([k[0] for k in cursor.description], row)) for row in result]# 关闭连接cursor.close()self.close_Mysql_conn()return result# 注册def insert_Mysql_userinfo(self, text):print("进入用户注册提交函数22")self.name = str(self.name_box.text())self.pwd = str(self.passwd_box.text())self.get_Mysql_conn()#连接数据库sql = 'SELECT * FROM userinfo'cursor = self.conn.cursor()cursor.execute(sql)result = cursor.fetchall()print("result=", result)result = [dict(zip([k[0] for k in cursor.description], row)) for row in result]ulist = []for item in result:ulist.append(item['name'])print("ulist=", ulist)try:sql = "insert into userinfo(name, pwd) values('{}', '{}');".format(self.name,self.pwd)cursor.execute(sql)if self.name == '' or self.pwd == '':self.conn.rollback()QMessageBox.warning(self, "警告", "账号或者密码有空，注册失败", QMessageBox.Yes | QMessageBox.No, QMessageBox.Yes)elif self.name in ulist:#messagebox.showerror('警告', message='用户名已存在')#msg_box = QMessageBox(QMessageBox.Warning, '警告', '用户名已存在')QMessageBox.warning(self, "警告", "用户名已存在", QMessageBox.Yes | QMessageBox.No, QMessageBox.Yes)else:# 提交事务self.conn.commit()#messagebox.showinfo(title='恭喜', message='注册成功')#msg_box = QMessageBox(QMessageBox.information, '恭喜', '注册成功')QMessageBox.information(self, "恭喜", "注册成功", QMessageBox.Yes | QMessageBox.No, QMessageBox.Yes)mainWnd2.close()  # 关闭注册界面，在这之后就可以进入你编写的其他界面了。cursor.close()self.close_conn()except:# 限制提交self.conn.rollback()#登录 本例没用def on_pushButton_Login_clicked(self, text):print("进入账号判断函数")self.get_Mysql_conn()  # 连接数据库sql = 'SELECT * FROM userinfo'cursor = self.conn.cursor()cursor.execute(sql)data = cursor.fetchall()# 打印获取到的数据for i in range(len(data)):#print(data[i][1])#print(data[i][2])if self.name_box.text() == data[i][1]:print("账号正确")if self.passwd_box.text() == data[i][2]:print("密码正确")#mainWnd.close()  # 关闭登陆界面，在这之后就可以进入你编写的其他界面了。cursor.close()self.close_conn()if __name__ == '__main__':app = QApplication(sys.argv)mainWnd2 = FramelessWindow()mainWnd2.setWindowTitle('注册')mainWnd2.setWindowIcon(QIcon('Qt.ico'))mainWnd2.setFixedSize(QSize(650, 500))  # 因为这里固定了大小，所以窗口的大小没有办法任意调整，想要使resizeWidget函数生效的话要把这里去掉，自己调节布局和窗口大小mainWnd2.setWidget(regist(mainWnd2))  # 把自己的窗口添加进来mainWnd2.show()app.exec()

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python使用mysql数据库一个简单的 Pyqt5 用户注册系统

效果图

代码

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