介绍

在这篇博客中，我将分享如何使用Python的Tkinter库创建一个带有查找功能的简单文本编辑器。

效果

代码解析

创建主窗口

import tkinter as tkclass TextEditor(tk.Tk):def __init__(self):super().__init__()self.title("带查找功能的文本编辑器")self.geometry("800x600")self.text_area = tk.Text(self, wrap='word')self.text_area.pack(expand=1, fill='both')if __name__ == "__main__":app = TextEditor()app.mainloop()

添加菜单栏

class TextEditor(tk.Tk):def __init__(self):super().__init__()self.title("带查找功能的文本编辑器")self.geometry("800x600")self.text_area = tk.Text(self, wrap='word')self.text_area.pack(expand=1, fill='both')self.menu = tk.Menu(self)self.config(menu=self.menu)self.file_menu = tk.Menu(self.menu, tearoff=0)self.menu.add_cascade(label="文件", menu=self.file_menu)self.file_menu.add_command(label="新建", command=self.new_file)self.file_menu.add_command(label="打开", command=self.open_file)self.file_menu.add_command(label="保存", command=self.save_file)self.file_menu.add_separator()self.file_menu.add_command(label="退出", command=self.exit_app)self.edit_menu = tk.Menu(self.menu, tearoff=0)self.menu.add_cascade(label="编辑", menu=self.edit_menu)self.edit_menu.add_command(label="查找", command=self.find_text)

实现文件操作

from tkinter import filedialogclass TextEditor(tk.Tk):# ...（之前的代码）def new_file(self):self.text_area.delete(1.0, tk.END)def open_file(self):file_path = filedialog.askopenfilename(defaultextension=".txt", filetypes=[("所有文件", "*.*"), ("文本文件", "*.txt")])if file_path:with open(file_path, "r") as file:self.text_area.delete(1.0, tk.END)self.text_area.insert(tk.END, file.read())def save_file(self):file_path = filedialog.asksaveasfilename(defaultextension=".txt", filetypes=[("所有文件", "*.*"), ("文本文件", "*.txt")])if file_path:with open(file_path, "w") as file:file.write(self.text_area.get(1.0, tk.END))def exit_app(self):self.quit()

实现查找

from tkinter import simpledialog, messageboxclass TextEditor(tk.Tk):# ...（之前的代码）def find_text(self):search_string = simpledialog.askstring("查找", "输入要查找的文本:")if search_string:start_pos = '1.0'while True:start_pos = self.text_area.search(search_string, start_pos, stopindex=tk.END)if not start_pos:messagebox.showinfo("查找", "未找到更多结果。")breakend_pos = f"{start_pos}+{len(search_string)}c"self.text_area.tag_add("highlight", start_pos, end_pos)self.text_area.tag_config("highlight", background="yellow")start_pos = end_posif __name__ == "__main__":app = TextEditor()app.mainloop()

完整代码

import tkinter as tk
from tkinter import simpledialog, messageboxclass TextEditor(tk.Tk):def __init__(self):super().__init__()self.title("带查找功能的文本编辑器")self.geometry("800x600")self.text_area = tk.Text(self, wrap='word')self.text_area.pack(expand=1, fill='both')self.menu = tk.Menu(self)self.config(menu=self.menu)self.file_menu = tk.Menu(self.menu, tearoff=0)self.menu.add_cascade(label="文件", menu=self.file_menu)self.file_menu.add_command(label="新建", command=self.new_file)self.file_menu.add_command(label="打开", command=self.open_file)self.file_menu.add_command(label="保存", command=self.save_file)self.file_menu.add_separator()self.file_menu.add_command(label="退出", command=self.exit_app)self.edit_menu = tk.Menu(self.menu, tearoff=0)self.menu.add_cascade(label="编辑", menu=self.edit_menu)self.edit_menu.add_command(label="查找", command=self.find_text)def new_file(self):self.text_area.delete(1.0, tk.END)def open_file(self):file_path = tk.filedialog.askopenfilename(defaultextension=".txt",filetypes=[("所有文件", "*.*"), ("文本文件", "*.txt")])if file_path:with open(file_path, "r") as file:self.text_area.delete(1.0, tk.END)self.text_area.insert(tk.END, file.read())def save_file(self):file_path = tk.filedialog.asksaveasfilename(defaultextension=".txt",filetypes=[("所有文件", "*.*"), ("文本文件", "*.txt")])if file_path:with open(file_path, "w") as file:file.write(self.text_area.get(1.0, tk.END))def exit_app(self):self.quit()def find_text(self):search_string = simpledialog.askstring("查找", "输入要查找的文本:")if search_string:start_pos = '1.0'while True:start_pos = self.text_area.search(search_string, start_pos, stopindex=tk.END)if not start_pos:messagebox.showinfo("查找", "未找到更多结果。")breakend_pos = f"{start_pos}+{len(search_string)}c"self.text_area.tag_add("highlight", start_pos, end_pos)self.text_area.tag_config("highlight", background="yellow")start_pos = end_posif __name__ == "__main__":app = TextEditor()app.mainloop()