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login.py
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login.py
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import random
import sqlite3
from tkinter import *
from tkinter import messagebox
from PIL import Image, ImageTk
from need_module import json,ctypes,sys,os
class Login(object):
def __init__(self, Register,Chat,master=None):
self.root = master # 定义内部变量root
self.root.title('登录窗口')
self.Register=Register
self.Chat=Chat
self.root.iconbitmap(r'images/icon/login.ico') # 设置左上角窗口图标
# 设置窗口居中
sw = self.root.winfo_screenwidth() # 计算水平距离
sh = self.root.winfo_screenheight() # 计算垂直距离
w = 690 # 宽
h = 535 # 高
x = (sw - w) / 2
y = (sh - h) / 2
self.root.geometry("%dx%d+%d+%d" % (w, h, (x + 160), y))
self.root.resizable(0, 0) # 窗口设置为不可放大缩小
# 告诉操作系统使用程序自身的dpi适配
ctypes.windll.shcore.SetProcessDpiAwareness(1)
# 获取屏幕的缩放因子
ScaleFactor = ctypes.windll.shcore.GetScaleFactorForDevice(0)
# 设置程序缩放
self.root.tk.call('tk', 'scaling', ScaleFactor / 75)
self.creatlogin()
def creatlogin(self):
self.fr2 = Frame(self.root)
self.fr2.pack()
self.fr1 = Frame(self.root)
self.fr1.pack(pady=10)
self.benner_list = ['images/benner/banner-1.jpg', 'images/benner/banner-2.jpg', 'images/benner/banner-3.jpg',
'images/benner/banner-4.jpg', 'images/benner/banner-5.jpg', 'images/benner/banner-6.jpg', ]
self.benner_img = random.choice(self.benner_list) # 随机一张背景图
# 图片大小：690x300
self.pic = Image.open(self.benner_img)
self.login_benner = ImageTk.PhotoImage(self.pic)
# 标签 图片
self.imgLabel = Label(self.fr2, image=self.login_benner)
self.imgLabel.pack()
# 标签 用户和密码
self.label_usr = Label(self.fr1, text="用户名：")
self.label_usr.grid(row=0, column=0, pady=10)
self.label_pwd = Label(self.fr1, text="密 码：")
self.label_pwd.grid(row=1, column=0)
# 文本框 用户名
self.var_usr_name = StringVar()
self.entry_name = Entry(self.fr1, textvariable=self.var_usr_name)
self.entry_name.grid(row=0, column=1)
self.entry_name.focus_set() # 获得焦点
# 文本框 密码
self.var_usr_pwd = StringVar()
self.entry_pwd = Entry(self.fr1, textvariable=self.var_usr_pwd, show="*")
self.entry_pwd.grid(row=1, column=1)
self.saved_msg()
self.fr3 = Frame(self.root)
self.fr3.pack()
self.rd_login = IntVar()
self.rd_Passwd = IntVar()
self.checkboxLogin = Checkbutton(self.fr3, text="自动登录", variable=self.rd_login)
self.checkboxPasswd = Checkbutton(self.fr3, text="记住密码", variable=self.rd_Passwd)
self.la = Label(self.fr3, width=5)
self.la.grid(row=0, column=0)
self.checkboxLogin.grid(row=0, column=1)
self.checkboxPasswd.grid(row=0, column=2)
# 登录
self.root.bind('<Return>', self.check_login) # 绑定回车键
self.bt_login = Button(self.fr3, text=" 登录 ", command=lambda: self.check_login())
self.bt_login.grid(row=1, column=1, pady=5)
self.bt_quit = Button(self.fr3, text=" 退出 ", command=sys.exit)
self.bt_quit.grid(row=1, column=2)
# # 底部标签
self.fr4 = Frame(self.root)
self.fr4.pack(side='bottom')
self.bt_register = Button(self.fr4, text=" 注册账号", relief=FLAT, bg='#f0f0f0', command=self.login_win_close)
self.bt_register.pack(side='left', anchor='s')
self.la2 = Label(self.fr4, width=150)
self.la2.pack()
self.tsLabel2 = Label(self.fr4, text="聊天登录界面 by LGH ", fg="red")
self.tsLabel2.pack(side='right', anchor='s', pady=5)
def red_msg(self):
if self.rd_Passwd.get() == 1:
# 创建新的JSON
new_usr = {
'username': self.var_usr_name.get(),
'password': self.var_usr_pwd.get()
}
with open('usr.json', 'w') as wp:
json.dump(new_usr, wp)
def saved_msg(self):
self.saved_name = ''
self.saved_pwd = ''
if os.path.exists('usr.json'):
with open('usr.json', 'r') as fp:
json_file = json.load(fp)
json_str = json.dumps(json_file)
json_date = json.loads(json_str)
print(json_date)
self.saved_name = json_date['username']
self.saved_pwd = json_date['password']
# print(self.saved_name,self.saved_pwd)
if self.saved_name != '':
self.entry_name.insert(END, self.saved_name)
self.entry_pwd.insert(END, self.saved_pwd)
def login_win_close(self):
self.fr1.destroy()
self.fr2.destroy()
self.fr3.destroy()
self.fr4.destroy() # 登录界面卸载
self.Register(Login,self.Chat,self.root) # 密码对，就把主窗体模块的界面加载
def check_login(self, *args):
global usr_name
self.usr_name = self.var_usr_name.get()
self.usr_pwd = self.var_usr_pwd.get()
conn = sqlite3.connect('yonghu.db')
cursor = conn.cursor()
if self.usr_name == '' or self.usr_pwd == '':
messagebox.showwarning(title='提示', message="用户名密码不能为空")
else:
# 执行查询语句：
cursor.execute('select username from user')
values = cursor.fetchall()
cursor.execute('select password from user where username="%s"' % self.usr_name)
# 获得查询结果集：
values2 = cursor.fetchall()
userList = []
for i in values:
# print(i[0])
userList.append(i[0])
if self.usr_name in userList:
if self.usr_pwd == values2[0][0]:
messagebox.showinfo(title='提示', message='登录成功，欢迎回来!')
self.root.unbind('<Return>') # 解绑回车键事件
self.red_msg()
print('是否记住密码:',self.rd_Passwd.get())
self.fr1.destroy()
self.fr2.destroy()
self.fr3.destroy()
self.fr4.destroy() # 登录界面卸载
self.Chat(self.usr_name)
else:
messagebox.showerror(title='提示', message="用户名密码错误！")
else:
messagebox.showerror(title='提示', message="没有该用户名！")
cursor.close()
conn.close()
# 下面返回字符串break使回车绑定事件只触发绑定的方法而不进行默认的换行操作
return 'break'