tkinter 实现爬虫的UI界面

使用python的内置模块tkinter编写了爬取51Ape网站(无损音乐的百度云链接)的UI界面 

tkinter入门简单, 但同时在编写的过程中因为文档的缺少很不方便。

下面是UI界面模块的编写,由于爬虫方面由于网站没有反爬非常简单,就不显示出来了 

UI类在初始化时会加载所有歌手信息, 下拉框绑定了<<ComboboxSelected>>事件,请求歌手的歌曲信息显示在listbox, listbox绑定了双击事件请求该歌曲的百度云链接及提取码。

from tkinter import *
from tkinter import ttk
import tkinter.font as tkFont
from .spider import get_singer_info, get_all_song, get_song_link

song_info = {}


# 定义适合的函数创建框架和更简洁的按钮, 增加程序的易读性
def labelframe(root):
    w = LabelFrame(root)
    w.pack(fill=X, padx=15, pady=8)
    return w


def label(root, text, font):
    w = Label(root, text=text, bg='blue', fg='white', width=6, font=font)
    w.pack(fill=X, padx=10, side=LEFT)
    return w


def frame(root, side):
    w = Frame(root)
    w.pack(side=side, expand=YES, fill=BOTH, padx=10, pady=8)
    return w


def combobox(root, variable, font):
    w = ttk.Combobox(root, textvariable=variable, width=10, font=font)
    w.pack(fill=X, padx=5, side=LEFT)
    return w


def entry(root, font):
    w = Entry(root, width=12, font=font)
    w.pack(padx=5, fill=X, side=LEFT)
    return w


def listbox(root, font):
    w = Listbox(root,  height=10, width=22, font=font)
    w.pack(side=LEFT, fill=X, expand=YES)
    return w


def scrollbar(root, orient, side, fill, command=None):
    w = Scrollbar(root, orient=orient, command=command)
    w.pack(side=side, fill=fill)
    return w


def font(family, size):
    w = tkFont.Font(family=family, size=size)
    return w


class AppUI(Frame):
    def __init__(self):
        tk = Tk()                # 实例化tk对象

        self.singer = StringVar()     # 定义一个可供内容存取的tkinter的变量
        ft = font(family='Calibri', size=10)      # 定义字体  family:字体类型名的字符串;size:以点为单位的字体高度

        lf = labelframe(tk)          # LabelFrame 组件是 Frame 组件的变体。默认情况下,LabelFrame 会在其子组件的周围绘制一个边框以及一个标题。

        top_frame = frame(lf, side=TOP)   # 定义容器frame,side=TOP  sdie停靠在父组件的那一边上,默认TOP
        label(top_frame, text='Singer', font=ft)   # 标签
        self.cbb = combobox(top_frame, self.singer, font=ft)  # 下拉框
        self.cbb['values'] = tuple([key for key in get_singer_info().keys()])   # 初始化下拉框的值
        self.cbb.bind("<<ComboboxSelected>>", self.change)    # 下拉框绑定选择事件

        bottom_frame = frame(lf, TOP)
        band = frame(bottom_frame, TOP)
        self.listbox = listbox(band, font=ft)                 # listbox
        self.listbox.bind('<Double-Button-1>', self.open_link)     # listbox绑定双击事件
        vertical_bar = scrollbar(band, orient=VERTICAL, side=RIGHT, fill=Y, command=self.listbox.yview)    # 创建滚动条 orient1. 指定绘制 HORIZONTAL(垂直滚动条)还是 VERTICAL(水平滚动条)2. 默认值是 VERTICAL command 1.当滚动条更新时回调的函数 2.通常的是指定对应组件的 xview() 或 yview() 方法
        self.listbox['yscrollcommand'] = vertical_bar.set     # 设置竖直滚动条
        horizontal_bar = scrollbar(bottom_frame, orient=HORIZONTAL, side=BOTTOM, fill=X, command=self.listbox.xview)
        self.listbox['xscrollcommand'] = horizontal_bar.set   # 设置水平滚动条

        footer_frame = frame(lf, TOP)
        label(footer_frame, text='Key', font=ft)
        self.ekey = entry(footer_frame, font=ft)

        tk.title('51Api')              # 修改窗口名
        tk.update()                    # 刷新页面 刷新winfo_width, winfo_height
        curWidth = tk.winfo_width()
        curHeight = tk.winfo_height()
        scnWidth, scnHeight = tk.maxsize()
        size = '+%d+%d' % ((scnWidth - curWidth) / 2, (scnHeight - curHeight) / 2)
        tk.geometry(size)    # %dx%d+%d+%d 第一个数横大小,第二个数纵大小,第三个数离左屏幕边界距离,第四个数离上面屏幕边界距离
        tk.mainloop()        # 进入消息循环
 
    def change(self, event):
        self.listbox.delete(0, END)
        get_all_song(self.cbb.get())
        from .spider import song_queue
        while True:
            if song_queue.empty():
                break
            song = song_queue.get()
            self.listbox.insert('end', song[0])
            song_info[song[0]] = song[1]

    def open_link(self, event):
        from webbrowser import open
        down_link, down_key = get_song_link(song_info[self.listbox.selection_get()])
        self.ekey.delete(0, END)
        self.ekey.insert(0, down_key)
        open(down_link)


if __name__ == "__main__":
    AppUI()

  

原文地址:https://www.cnblogs.com/frank-shen/p/10291957.html