python基于Tkinter库实现简单文本编辑器实例_Python

python基于Tkinter库实现简单文本编辑器实例

2020-06-22 10:05feige Python

这篇文章主要介绍了python基于Tkinter库实现简单文本编辑器,实例分析了Python使用Tkinter库实现简单桌面应用程序的技巧,具有一定参考借鉴价值,需要的朋友可以参考下

本文实例讲述了python基于Tkinter库实现简单文本编辑器的方法。分享给大家供大家参考。具体实现方法如下：

									## {{{ http://code.activestate.com/recipes/578568/ (r1)

									from Tkinter import *

									from tkSimpleDialog import askstring

									from tkFileDialog  import asksaveasfilename

									from tkMessageBox import askokcancel     

									class Quitter(Frame):            

									  def __init__(self, parent=None):     

									    Frame.__init__(self, parent)

									    self.pack()

									    widget = Button(self, text='Quit', command=self.quit)

									    widget.pack(expand=YES, fill=BOTH, side=LEFT)

									  def quit(self):

									    ans = askokcancel('Verify exit', "Really quit?")

									    if ans: Frame.quit(self)

									class ScrolledText(Frame):

									  def __init__(self, parent=None, text='', file=None):

									    Frame.__init__(self, parent)

									    self.pack(expand=YES, fill=BOTH)        

									    self.makewidgets()

									    self.settext(text, file)

									  def makewidgets(self):

									    sbar = Scrollbar(self)

									    text = Text(self, relief=SUNKEN)

									    sbar.config(command=text.yview)         

									    text.config(yscrollcommand=sbar.set)      

									    sbar.pack(side=RIGHT, fill=Y)          

									    text.pack(side=LEFT, expand=YES, fill=BOTH)   

									    self.text = text

									  def settext(self, text='', file=None):

									    if file: 

									      text = open(file, 'r').read()

									    self.text.delete('1.0', END)          

									    self.text.insert('1.0', text)         

									    self.text.mark_set(INSERT, '1.0')       

									    self.text.focus()                

									  def gettext(self):                

									    return self.text.get('1.0', END+'-1c')     

									class SimpleEditor(ScrolledText):            

									  def __init__(self, parent=None, file=None): 

									    frm = Frame(parent)

									    frm.pack(fill=X)

									    Button(frm, text='Save', command=self.onSave).pack(side=LEFT)

									    Button(frm, text='Cut',  command=self.onCut).pack(side=LEFT)

									    Button(frm, text='Paste', command=self.onPaste).pack(side=LEFT)

									    Button(frm, text='Find', command=self.onFind).pack(side=LEFT)

									    Quitter(frm).pack(side=LEFT)

									    ScrolledText.__init__(self, parent, file=file) 

									    self.text.config(font=('courier', 9, 'normal'))

									  def onSave(self):

									    filename = asksaveasfilename()

									    if filename:

									      alltext = self.gettext()           

									      open(filename, 'w').write(alltext)     

									  def onCut(self):

									    text = self.text.get(SEL_FIRST, SEL_LAST)    

									    self.text.delete(SEL_FIRST, SEL_LAST)      

									    self.clipboard_clear()       

									    self.clipboard_append(text)

									  def onPaste(self):                  

									    try:

									      text = self.selection_get(selection='CLIPBOARD')

									      self.text.insert(INSERT, text)

									    except TclError:

									      pass                  

									  def onFind(self):

									    target = askstring('SimpleEditor', 'Search String?')

									    if target:

									      where = self.text.search(target, INSERT, END) 

									      if where:                  

									        print where

									        pastit = where + ('+%dc' % len(target))  

									        #self.text.tag_remove(SEL, '1.0', END)   

									        self.text.tag_add(SEL, where, pastit)   

									        self.text.mark_set(INSERT, pastit)     

									        self.text.see(INSERT)          

									        self.text.focus()            

									if __name__ == '__main__':

									  try:

									    SimpleEditor(file=sys.argv[1]).mainloop()  

									  except IndexError:

									    SimpleEditor().mainloop()