python: Treeview Pagination

 

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# encoding: utf-8 # 版權所有 2024 ©塗聚文有限公司 # 許可資訊查看：言語成了邀功的功臣，還需要行爲每日來值班嗎？ # 描述：   Treeview Pagination # Author    : geovindu,Geovin Du 塗聚文. # IDE       : PyCharm 2023.1 python 3.11 # OS        : windows 10 # Datetime  : 2024/12/02 20:00 # User      : geovindu # Product   : PyCharm # Project   : IctGame # File      : ttkbootstrap.py # explain   : 學習   import tkinter as tk from tkinter import ttk     def loaddata(page):     """       :param page:     :return:     """     global currentpage     global maxpage     global tatalpage       table = [         (1,"geovindu1", "Geovin", "geovindu@example.com"),         (2,"geovindu2", "Geovin", "geovindu@example.com"),         (3,"geovindu3", "Geovin", "geovindu@example.com"),         (4,"geovindu4", "Geovin", "geovindu@example.com"),         (5,"geovindu5", "Geovin", "geovindu@example.com"),         (6,"geovindu6", "Geovin", "geovindu@example.com"),         (7,"geovindu7", "Geovin", "geovindu@example.com"),         (8,"geovindu8", "Geovin", "geovindu@example.com"),         (9,"geovindu9", "Geovin", "geovindu@example.com"),         (10,"geovindu10", "Geovin", "geovindu@example.com"),         (11,"geovindu11", "Geovin", "geovindu@example.com"),         (12,"geovindu12", "Geovin", "geovindu@example.com"),         (13,"geovindu13", "Geovin", "geovindu@example.com"),         (14,"geovindu14", "Geovin", "geovindu.Geovin@example.com"),         (15,"geovindu15", "Geovin", "geovindu@example.com"),         (16,"geovindu16", "Geovin", "geovindu@example.com"),         (17,"geovindu17", "Geovin", "geovindu.Geovin@example.com"),         (18,"geovindu18", "Geovin", "geovindu@example.com"),         (19,"geovindu19", "Geovin", "geovindu@example.com"),         (20,"geovindu20", "Geovin", "geovindu.Geovin@example.com"),         (21,"geovindu21", "Geovin", "geovindu@example.com"),         (22,"geovindu22", "Geovin", "geovindu@example.com"),         (23,"geovindu23", "Geovin", "geovindu.Geovin@example.com"),         (24,"geovindu24", "Geovin", "geovindu@example.com"),         (25,"geovindu25", "Geovin", "geovindu@example.com"),         (26,"geovindu26", "Geovin", "geovindu.Geovin@example.com"),         (27,"geovindu27", "Geovin", "geovindu@example.com"),         (28,"geovindu28", "Geovin", "geovindu@example.com"),         (29,"geovindu29", "Geovin", "geovindu.Geovin@example.com"),         (30,"geovindu30", "Geovin", "geovindu@example.com")     ]     # 计算每页显示     pagesize = 10     total = len(table)       startindex = (page - 1) * pagesize     endindex = startindex + pagesize     # 计算总共多少页     if total % pagesize == 0:         tatalpage = total / pagesize     else:         tatalpage = total / pagesize + 1       totallabel.config(text=f"/{int(tatalpage)}")     # 返回当前页的数据     return table[startindex:endindex]     def updatetreeview(treeview, page):     """     消空Treeview中的所有硕     :param treeview:     :param page:     :return:     """     treeview.delete(*treeview.get_children())     print(page)     # 并 加载当煎页的数据     table = loaddata(page)     # 将数据添加Treeview中     for item in table:         treeview.insert("", "end", values=item)     def prevpage(treeview, pagelabel):     """       :param treeview:     :param pagelabel:     :return:     """     ll = pagelabel.cget("text").replace('Page ', '')  # page 2     print('prev', ll)     page = int(ll)     page -= 1     currentpage = page     if page > 1:         updatetreeview(treeview, page)         pagelabel.config(text=f"Page {currentpage}")     else:         if page == 1:             currentpage = 1             updatetreeview(treeview, 1)             pagelabel.config(text=f"Page {currentpage}")     def nextpage(treeview, page_label):     """       :param treeview:     :param page_label:     :return:     """     ll = pagelabel.cget("text").replace('Page ', '')  # Page  .replace('Page','')  Page 1     print('ll', ll)     # print(str(tatalpage))     page = int(ll) + 1     # currentpage=currentpage+ 1     print('next:', pagelabel.cget("text"))     currentpage = page     print('next:', page)     if currentpage <= tatalpage:         updatetreeview(treeview, currentpage)         pagelabel.config(text=f"Page {currentpage}")     # 并创建主窗日 root = tk.Tk() root.title="分頁" treeview = ttk.Treeview(root, columns=("ID","First Name", "Last Name", "Email")) treeview['show'] = 'headings' treeview.heading("ID", text="ID") treeview.heading("First Name", text="First Name") treeview.heading("Last Name", text="Last Name") treeview.heading("Email", text="Email") treeview.pack() prevbtn = tk.Button(root, text="Prev", command=lambda: prevpage(treeview, pagelabel)) prevbtn.pack(side="left") nextbtn = tk.Button(root, text="Next", command=lambda: nextpage(treeview, pagelabel)) nextbtn.pack(side="left") pagelabel = tk.Label(root, text="Page 1") pagelabel.pack(side="left")   totallabel = tk.Label(root, text="/5") totallabel.pack(side="left") # 初始化Treeview和分页数据 currentpage = 1 updatetreeview(treeview, currentpage) # 运行主循环 root.mainloop()