# coding=utf-8
"""开发记事本软件的菜单"""
from tkinter.filedialog import *
from tkinter.colorchooser import *
from tkinter import *
class Application(Frame):
def __init__(self, master=None):
super().__init__(master)
self.master = master
self.textpad = None
self.pack()
self.createWidget()
def createWidget(self):
# 创建主菜单栏
menubar = Menu(root)
# 创建主菜单三个
menuFile = Menu(menubar)
menuEdit = Menu(menubar)
menuHelp = Menu(menubar)
# 将三个主菜单加入主菜单栏中
menubar.add_cascade(text="文件[F]", menu=menuFile)
menubar.add_cascade(text="编辑[E]", menu=menuEdit)
menubar.add_cascade(text="帮助[H]", menu=menuHelp)
# 为文件[F]增加子菜单项
menuFile.add_command(label="新建", accelerator="ctrl+n", command=self.newfile)
menuFile.add_command(label="打开", accelerator="ctrl+o", command=self.openfile)
menuFile.add_command(label="保存", accelerator="ctrl+s", command=self.savefile)
menuFile.add_separator() # 添加分行符
menuFile.add_command(label="退出", accelerator="ctrl+q", command=self.exit)
# 将主菜单添加到窗口中
root["menu"] = menubar
# 增加快捷键的处理
root.bind("<Control-n>", lambda event: self.newfile())
root.bind("<Control-o>", lambda event: self.openfile())
root.bind("<Control-s>", lambda event: self.savefile())
root.bind("<Control-q>", lambda event: self.exit())
# 文本编辑区
self.textpad = Text(root, width=50, height=30)
self.textpad.pack()
# 创建上下菜单
self.contextMenu = Menu(root)
self.contextMenu.add_command(label="背景颜色", command=self.openAskColor)
# 为右键绑定事件
root.bind("Button-3", self.createContextMenu)
def newfile(self):
self.textpad.delete("1.0", "end") # 把text中的所有的内容清空
self.filename = asksaveasfilename(title="另存为", initialfile="未命名.txt",
filetypes=[("文本文档", "*.txt")], defaultextension=".txt")
self.savefile()
def openfile(self):
self.textpad.delete("1.0", "end") # 把text中的所有的内容清空
with askopenfile(title="打开文本文件") as f:
self.textpad.insert(INSERT, f.read())
self.filename = f.name
def savefile(self):
self.textpad.delete("1.0", "end") # 把text中的所有的内容清空
with open(self.filename, "w") as f:
c = self.textpad.get(1.0, END)
f.write(c)
def exit(self):
root.quit()
def openAskColor(self):
s1 = askcolor(color="red", title="选择背景色")
self.textpad.config(bg=s1[1])
pass
def createContextMenu(self, event):
# 菜单在鼠标右键单击的座标处显示
self.contextMenu.post(event.x_root, event.y_root)
if __name__ == '__main__':
root = Tk()
root.geometry("500x400+200+300")
root.title("私用记事本")
app = Application(master=root)
root.mainloop()
