import tkinter as tk
import multiprocessing


class balloon_class:
    
    def __init__(self, queue, message, x, y, font_name, font_size, fore_color, back_color, transparency, show_border):
        self.process = multiprocessing.Process(target=self.create_balloon, daemon=True, args=(queue,message,x,y,font_name,font_size,fore_color,back_color,transparency, show_border))
        self.process.start()
    
    def create_balloon(self, queue, message, x, y, font_name, font_size, fore_color, back_color, transparency, show_border):

        self.root = tk.Tk()
        self.root.withdraw()
        self.root.wm_overrideredirect(True)
        self.sub_window = tk.Toplevel(self.root)
        self.sub_window.deiconify()
        
        if show_border:
            border = 'solid'
        else:
            border = 'flat'
        
        #サイズ計算用のラベル
        self.dummy_label = tk.Label(self.sub_window, text=message, font=(font_name, font_size))
        # ラベルサイズを計算
        width = self.dummy_label.winfo_reqwidth() 
        height = self.dummy_label.winfo_reqheight()
        
        self.sub_window.attributes("-topmost", True)
        # 全体を半透明にする（ウィンドウ全体が透明度を持つ）
        self.sub_window.wm_attributes("-alpha", transparency)
        self.sub_window.geometry(f"{width+20}x{height+20}+{x}+{y}")
        self.sub_window.configure(bg=back_color)
        self.frame = tk.Frame(self.sub_window, bg=back_color, bd=1, relief=border)
        self.frame.place(x=0, y=0, width=width+20, height=height+20)
        self.label = tk.Label(self.frame, text=message, fg=fore_color, bg=back_color, font=(font_name, font_size), justify="left")
        self.label.place(x=8, y=10, width=width, height=height) 
        self.sub_window.wm_overrideredirect(True)
        self.update_balloon(queue, message, x, y, font_name, font_size, fore_color, back_color, transparency, show_border)
        self.root.mainloop()
    
    
    def update_balloon(self, queue, message, x, y, font_name, font_size, fore_color, back_color, transparency, show_border):           
        try:        
            while not queue.empty(): # キューからデータを取得してGUIの内容を更新 
                balloon_args, hide = queue.get_nowait()
                message, x, y, font_name, font_size, fore_color, back_color, transparency, show_border = balloon_args
                
                try:
                    if hide:
                        self.sub_window.withdraw()
                    else:    
                        self.sub_window.deiconify()
                except Exception:
                    # ウィンドウをAlt+F4で消した場合も再生成
                    self.sub_window = tk.Toplevel(self.root)
                    self.sub_window.wm_overrideredirect(True)
                    self.sub_window.deiconify()
                    self.dummy_label = tk.Label(self.sub_window)
                    self.frame = tk.Frame(self.sub_window)
                    self.label = tk.Label(self.frame)
                
                if show_border:
                    border = 'solid'
                else:
                    border = 'flat'
                
                self.dummy_label.config(text=message, font=(font_name, font_size))
                width = self.dummy_label.winfo_reqwidth()
                height = self.dummy_label.winfo_reqheight()
                
                self.sub_window.wm_attributes("-alpha", transparency)
                self.sub_window.geometry(f"{width+20}x{height+20}+{x}+{y}")
                self.sub_window.configure(bg=back_color)
                self.frame.config(bg=back_color, bd=1, relief=border)
                self.frame.place(x=0, y=0, width=width+20, height=height+20)
                self.label.config(text=message, fg=fore_color, bg=back_color, font=(font_name, font_size), justify="left")
                self.label.place(x=8, y=10, width=width, height=height) 
        except:
            pass  
        self.root.after(1, self.update_balloon, queue, message, x, y, font_name, font_size, fore_color, back_color, transparency, show_border)
    


def balloon(message=" ", x=0, y=0, font_name="Arial", font_size=14, fore_color="#000000", back_color="#FFFF00", transparency=1, show_border=True):   
    global balloon_process, balloon_queue
    if 'balloon_process' not in globals() or not balloon_process.process.is_alive():
        balloon_queue = multiprocessing.Queue()
        balloon_process=balloon_class(balloon_queue, message, x, y, font_name, font_size, fore_color, back_color, transparency, show_border)
    else:
        balloon_args = [message, x, y, font_name, font_size, fore_color, back_color, transparency, show_border]
        hide = False
        balloon_queue.put((balloon_args, hide))


def hide_balloon():
    try:
        dummy_args = [" ", 0, 0, "Arial", 14, "#000000", "#FFFF00", 1, True]
        hide = True
        balloon_queue.put((dummy_args, hide))
    except Exception:
        pass




if __name__ == "__main__":
    import time
    balloon(message="Hello World!\nThis is a test message.\nこんにちは", x=300, y=500, font_name="Arial", font_size=14, fore_color="#000000", back_color="#00FFFF", transparency=0.7, show_border=False)
    
    time.sleep(3)

    time.sleep(1)
    balloon(message="Updated Content!", x=300, y=500, font_size=14, back_color="#00FFFF", transparency=0.7, show_border=False)
    time.sleep(3)
    balloon(message="Final Update!", x=300, y=500, font_size=14, back_color="#00FFFF", transparency=0.7, show_border=True)
    time.sleep(3)