python 记事本1.0
演示
当在文本框中输入内容时,在文件名前面会显示星号
打开文件
还有保存文件、另存为文件功能
代码
import ttkbootstrap as ttk
from ttkbootstrap.constants import *
# tkinter 内的组件
from tkinter.filedialog import askopenfilename
from tkinter.filedialog import asksaveasfilename
from tkinter.messagebox import *
from tkinter.scrolledtext import ScrolledText
# 文件类型
file_types = (("txt 文本","*.txt"),("java 文件","*.java"),("c 文件","*.c"),
("c++ 文件","*.cpp"),("python 文件","*.py"),("所有文件","*.*"),)
# 记事本应用程序
class Application(ttk.Frame):
def __init__(self,master=None):
super().__init__(master, padding=15)
self.master = master # 框架基于根容器
self.textarea = None # textarea文本区域
self.filepath = "" # 记事本保存的文件路径
self.filename = "无标题" # 文件名
self.unchange_file = "" # 保存未修改的文件(记录当时打开的文件)
self.pack() # 放置应用程序
self.createWidget() # 记事本中各个组件在这里创建
def createWidget(self):
# 全局变量
global root
# 创建主菜单栏
menubar = ttk.Menu(root)
'''创建一个弹出菜单'''
menuPop = ttk.Menu(root,tearoff=False)
#创建子菜单
menuFlie = ttk.Menu(menubar)
menuEdit = ttk.Menu(menubar)
menuHelp = ttk.Menu(menubar)
# 将子菜单加入到主菜单栏
menubar.add_cascade(label='文件(F)',menu=menuFlie)
menubar.add_cascade(label='编辑(E)',menu=menuEdit)
menubar.add_cascade(label='帮助(H)',menu=menuHelp)
# 添加菜单项
menuFlie.add_command(label='打开',accelerator='Ctrl+O',command=self.open_file)
menuFlie.add_command(label='保存',accelerator='Ctrl+S',command=self.save_file)
menuFlie.add_command(label='另存为',accelerator='Ctrl+W',command=self.saveas_file)
menuFlie.add_separator() #添加分割线
menuFlie.add_command(label='退出',accelerator='Ctrl+Q',command=self.exit)
menuPop.add_command(label="剪切", command=self.cut_text)
menuPop.add_command(label="复制", command=self.copy_text)
menuPop.add_command(label="粘贴", command=self.paste_text)
menuPop.add_command(label="全选", command=self.select_all)
menuPop.add_command(label="清空", command=self.clear_text)
#将主菜单栏加到根窗口
root.config(menu=menubar)
style = ttk.Style()
#文本编辑区
self.textarea = ttk.ScrolledText(root,
highlightcolor=style.colors.primary,
highlightbackground=style.colors.border,
highlightthickness=1)
self.textarea.pack(fill=BOTH,expand=True)
#增加快捷键的处理
root.bind('<Control-o>',lambda event:self.open_file())
root.bind('<Control-s>',lambda event:self.save_file())
root.bind('<Control-w>',lambda event:self.save_file())
root.bind('<Control-a>',lambda event:self.select_all())
root.bind('<Control-d>',lambda event:self.clear_text())
root.bind('<Control-q>',lambda event:self.exit())
root.bind('<Key>',lambda event:self.changed_file()) # 检查文件是否修改
self.textarea.bind("<Button-3>",lambda event:self.popup(menuPop=menuPop,event=event)) # 绑定鼠标右键,执行popup函数
def cut_text(self,event=None):
self.textarea.event_generate('<<Cut>>')
def copy_text(self,event=None):
self.textarea.event_generate('<<Copy>>')
def paste_text(self,event=None):
self.textarea.event_generate('<<Paste>>')
def select_all(self,event=None):
self.textarea.tag_add('sel', '1.0', 'end')
def clear_text(self,event=None):
global root
self.textarea.delete("1.0",END)
if self.filename[0] == "*":
self.filename = self.filename[1:]
root.title(self.filename + "-记事本")
def popup(self,menuPop,event):
menuPop.post(event.x_root, event.y_root)
# 打开文件选择对话框
def open_file(self):
global root
self.filepath = askopenfilename(filetypes=file_types)
if self.filepath != "":
try:
with open(self.filepath,"r",encoding="utf-8") as file:
# 清空文本域
self.textarea.delete("1.0",END)
# 将文件内容添加进来
msg = file.read()
self.textarea.insert(END,msg)
# 记录打开的文件
self.unchange_file = msg.strip()
o_index = self.filepath.rfind("/") + 1
self.filename = self.filepath[o_index:]
root.title(self.filename + "-记事本")
except PermissionError as e:
# 清空文本域
self.textarea.delete("1.0",END)
# 弹出窗口
showerror(title='错误', message='权限不足,无法打开该文件!')
except UnicodeDecodeError as e1:
self.textarea.delete("1.0",END)
showerror(title='错误', message='文件格式错误,无法打开该文件!')
except Exception as e2:
self.textarea.delete("1.0",END)
showerror(title='错误', message='无法打开该文件!')
# 保存文件
def save_file(self,exit_program=False):
global root
# 判断是否是新文件(file_name为空)
if "无标题" not in self.filename:
if self.filename[0] == "*":
save_msg = self.textarea.get("1.0",END)
with open(self.filepath,"w",encoding="utf-8") as file:
file.write(save_msg)
# 更新保存后的文件
self.unchange_file = save_msg.strip()
# 去除*
self.filename = self.filename[1:]
root.title(self.filename + "-记事本")
else:
# 新文件--> 另存为
self.saveas_file()
# 另存为文件
def saveas_file(self):
global root
self.filepath = asksaveasfilename(defaultextension=".txt", initialfile="未命名.txt",filetypes=file_types)
s_index = self.filepath.rfind("/") + 1
if self.filepath != "":
# 存在文件路径
with open(self.filepath,"w",encoding="utf-8") as file:
file.write(self.textarea.get("1.0",END))
self.filename = self.filepath[s_index:] # 文件名记录
else:
self.filename == "无标题"
root.title(self.filename + "-记事本")
# 判断文件是否修改过
def changed_file(self) -> bool:
global root
# 从文本区域中获取文本
change_file = self.textarea.get("1.0",END).strip()
if change_file == "" and (self.unchange_file == change_file or "无标题" in self.filename) and self.filename[0] == "*":
# 去除*
self.filename = self.filename[1:]
root.title(self.filename + "-记事本")
if self.textarea == None:
return False
if self.filename[0] == "*":
return True # 文件还没有保存
if self.unchange_file != change_file:
# 文件已经重新写入了内容
self.filename = "*" + self.filename
root.title(self.filename + "-记事本")
return True
return False
# 退出程序
def exit(self):
global root
# 在退出之间,查看是否修改了文件
if self.filename[0] == "*":
if askokcancel("退出","文件尚未保存,是否进行保存"):
self.save_file()
root.destroy()
if __name__ == '__main__':
root = ttk.Window("无标题-记事本")
root.geometry('900x600')
app = Application(master=root)
app.mainloop()
版本预告
将
ttkbootstrap
第三方库 添加进去,美化页面
该程序大部分都只是tkinter
大的内容