python GUI demo(tkinter)
想了比较久用python做一个GUI的demo,还是用tkinter做一个小demo,版本python3.7下可行,代码如下:
1 #!/usr/bin/env python3 2 # -*- coding: utf-8 -*- 3 4 from functools import partial 5 import os 6 from time import sleep 7 from tkinter import * 8 9 class Application: 10 11 def __init__(self,initdir = None): 12 self.initdir = initdir 13 14 def ui_process(self): 15 root = Tk() 16 # 设置窗口位置 17 root.title("gui demo5 ") 18 self.root = root 19 #self.center_window(root, 600, 565) 20 #root.resizable(0, 0) # 框体大小可调性,分别表示x,y方向的可变性 21 self.label = Label(self.root,text='Directory Lister v1.1') 22 self.label.pack() 23 24 self.cwd = StringVar(self.root) 25 #print('==='+str(self.cwd)) 26 27 self.dirl = Label(self.root,fg='blue',font=('Helvetica',12,'bold')) 28 self.dirl.pack() 29 30 self.dirfm = Frame(self.root) 31 self.dirsb = Scrollbar(self.dirfm) 32 self.dirsb.pack(side=RIGHT,fill=Y) 33 self.dirs = Listbox(self.dirfm,height=15,width=50,yscrollcommand=self.dirsb.set) 34 self.dirs.bind('<Double-1>',self.setDirAndGo) 35 self.dirsb.config(command=self.dirs.yview) 36 self.dirs.pack(side=LEFT,fill=BOTH) 37 self.dirfm.pack() 38 39 self.dirn = Entry(self.root,width=50,textvariable=self.cwd) 40 self.dirn.bind('<Return>',self.doLS) 41 self.dirn.pack() 42 43 self.bfm = Frame(self.root) 44 self.clr = Button(self.bfm,text='Clear',command=self.clrDir,activeforeground='white',activebackground='blue') 45 self.ls = Button(self.bfm,text='List Directory',command=self.doLS,activeforeground='white',activebackground='green') 46 self.quit = Button(self.bfm,text='QUIT',command=self.root.quit,activeforeground='white',activebackground='red') 47 self.clr.pack(side=LEFT) 48 self.ls.pack(side=LEFT) 49 self.quit.pack(side=LEFT) 50 self.bfm.pack() 51 52 if self.initdir: 53 self.cwd.set(os.curdir) 54 self.doLS() 55 56 root.mainloop() 57 58 def center_window(self, root, w, h): 59 """ 60 窗口居于屏幕中央 61 :param root: root 62 :param w: 窗口宽度 63 :param h: 窗口高度 64 :return: 65 """ 66 # 获取屏幕 宽、高 67 ws = root.winfo_screenwidth() 68 hs = root.winfo_screenheight() 69 70 # 计算 x, y 位置 71 x = (ws/2) - (w/2) 72 y = (hs/2) - (h/2) 73 root.geometry('%dx%d+%d+%d' % (w, h, x, y)) 74 75 def doLS(self,ev=None): 76 error ='' 77 tdir = self.cwd.get() 78 if not tdir: 79 tdir = os.curdir 80 81 if not os.path.exists(tdir): 82 error = tdir + ':no such file.' 83 elif not os.path.isdir(tdir): 84 error = tdir + ':no a directory.' 85 86 if error: 87 self.cwd.set(error) 88 self.root.update() 89 sleep(2) 90 if not (hasattr(self,'last') \ 91 and self.last ): 92 self.last = os.curdir 93 self.cwd.set(self.last) 94 self.dirs.config(selectbackground='LightSkyBlue') 95 self.root.update() 96 return 97 98 self.cwd.set('fetching directory contents...') 99 self.root.update() 100 dirlist = os.listdir(tdir) 101 dirlist.sort() 102 os.chdir(tdir) 103 104 self.dirl.config(text=os.getcwd()) 105 self.dirs.delete(0,END) 106 self.dirs.insert(END,os.curdir) 107 self.dirs.insert(END,os.pardir) 108 for eachFile in dirlist: 109 self.dirs.insert(END,eachFile) 110 self.cwd.set(os.getcwd()) 111 self.dirs.config(selectbackground='LightSkyBlue') 112 113 def setDirAndGo(self,ev=None): 114 print(str(self.cwd)) 115 self.last = self.cwd.get() 116 self.dirs.config(selectbackground='red') 117 check = self.dirs.get(self.dirs.curselection()) 118 if not check: 119 check = os.curdir 120 self.cwd.set(check) 121 self.doLS() 122 123 def clrDir(self,ev=None): 124 self.cwd.set('') 125 126 127 def main(): 128 app = Application() 129 app.ui_process() 130 131 132 if __name__ == "__main__": 133 main()
通过demo学习了entry,button,Listbox等控件的使用,学习了StringVar的使用。