基于Python开发的桌面级文件备份工具

def execute_backup(self):
       for root, dirs, files in os.walk(self.source_path):
           rel_path = os.path.relpath(root, self.source_path)
           dest_path = os.path.join(self.dest_path, rel_path)
           os.makedirs(dest_path, exist_ok=True)
           
           for file in files:
               src_file = os.path.join(root, file)
               dest_file = os.path.join(dest_path, file)
               
               # 增量判断逻辑
               if not os.path.exists(dest_file):
                   need_copy = True  # 新文件
               else:
                   src_mtime = os.path.getmtime(src_file)
                   dest_mtime = os.path.getmtime(dest_file)
                   need_copy = src_mtime > dest_mtime  # 修改时间比对

  def calculate_next_run(self, hour, minute, weekday=None):
       now = datetime.now()
       if weekday is not None:  # 每周模式
           days_ahead = (weekday - now.weekday()) % 7
           next_date = now + timedelta(days=days_ahead)
           next_run = next_date.replace(hour=hour, minute=minute, second=0)
       else:  # 每日模式
           next_run = now.replace(hour=hour, minute=minute, second=0)
           if next_run < now:
               next_run += timedelta(days=1)
       return next_run

 def create_tray_icon(self):
       image = Image.new('RGBA', (64, 64), (255, 255, 255, 0))
       draw = ImageDraw.Draw(image)
       draw.ellipse((16, 16, 48, 48), fill=(33, 150, 243))
       
       menu = (
           pystray.MenuItem("打开主界面", self.restore_window),
           pystray.MenuItem("立即备份", self.start_backup_thread),
           pystray.Menu.SEPARATOR,
           pystray.MenuItem("退出", self.quit_app)
       )
       
       self.tray_icon = pystray.Icon("backup_tool", image, menu=menu)
       threading.Thread(target=self.tray_icon.run).start()