python寫的一個文字編輯器_python

複製代碼 代碼如下:

#!/usr/bin/env python
#-*- coding: utf-8 -*-
#=============================================================================
#     FileName:
#         Desc:
#       Author: ToughGuy
#      Version: 0.0.1
#   LastChange: 2013-02-20 14:52:11
#      History:
#=============================================================================

from Tkinter import *
import tkMessageBox,tkFileDialog
import platform

# nl = os.linesep

def openfile():
    global filename             # 使用global聲明為全域變數，方便後邊的程式調用
    systype = platform.system() # 判斷系統類別型
    if systype == 'windows':
        basedir = 'c:\\'
    else:
        basedir = '/'
    filename = tkFileDialog.askopenfilename(initialdir=basedir)
    try:
        fobj_r = open(filename, 'r')
    except IOError, errmsg:
        print '*** Failed open file:', errmsg
    else:
        editbox.delete(1.0, END)
        for eachline in fobj_r:
            editbox.insert(INSERT, eachline)
        fobj_r.close()

def savefile():
    save_data = editbox.get(1.0, END)
    try:
        fobj_w = open(filename, 'w')
        fobj_w.writelines(save_data.encode('utf-8'))
        fobj_w.close()
        tkMessageBox.showinfo(title='提示',
                message='儲存成功')
    except IOError, errmsg:
        tkMessageBox.showwarning(title='儲存失敗', message='儲存出錯    ')
        tkMessageBox.showwarning(title='錯誤資訊', message=errmsg)
    except NameError:
        tkMessageBox.showwarning(title='儲存失敗', message='未開啟檔案')
def showlinenum():
    tkMessageBox.showinfo(title='提示',
            message='這個功能作者現在不會寫,放這裡裝飾用的.')
def destroy_ui(ui):
    ui.destroy()

def aboutauthor():
    author_ui = Toplevel()
    author_ui.title('關於')
    author_ui.geometry('200x80')
    about_string = Label(author_ui,
            text="作者: ToughGuy")
    confirmbtn = Button(author_ui, text='確定',
            command=lambda:destroy_ui(author_ui))
    about_string.pack()
    confirmbtn.pack()
    # author_ui.mainloop()

def CreateMenus():
    # 初始化菜單
    Menubar = Menu(root)

    # 建立檔案菜單
    filemenu = Menu(Menubar, tearoff=0)
    filemenu.add_command(label='開啟檔案', command=openfile)
    filemenu.add_command(label='儲存檔案', command=savefile)
    filemenu.add_command(label='退出', command=lambda:destroy_ui(root))
    Menubar.add_cascade(label='檔案', menu=filemenu)

    # 建立編輯菜單
    editmenu = Menu(Menubar, tearoff=0)
    editmenu.add_command(label='顯示行號', command=showlinenum)
    Menubar.add_cascade(label='編輯', menu=editmenu)

    # 建立協助菜單
    helpmenu = Menu(Menubar, tearoff=0)
    helpmenu.add_command(label='關於作者', command=aboutauthor)
    Menubar.add_cascade(label='協助', menu=helpmenu)
    root.config(menu=Menubar)

root = Tk()
root.title('文字編輯器')
root.geometry('500x400')
CreateMenus()
editbox = Text(root, width=70, height=25, bg='white')
editbox.pack(side=TOP, fill=X)
root.mainloop()