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gui.py

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+import threading
+from tkinter import *
+from tkinter import ttk
+from PIL import Image, ImageTk
+from gesture_recognition import start_recognition, stop_recognition, release_camera, keep_running
+
+# 设置窗口宽高
+WINDOW_WIDTH = 800
+WINDOW_HEIGHT = 705
+
+def main():
+    show_welcome_screen()
+
+def set_window_position(window, width, height):
+    screen_width = window.winfo_screenwidth()
+    screen_height = window.winfo_screenheight()
+    x = (screen_width - width) // 2
+    y = (screen_height - height) // 2
+    window.geometry(f'{width}x{height}+{x}+{y}')
+
+def show_welcome_screen():
+    welcome = Tk()
+    welcome.title("欢迎使用")
+    set_window_position(welcome, WINDOW_WIDTH, WINDOW_HEIGHT)
+
+    # 加载背景图片
+    bg_image = Image.open("1.png")
+    bg_image = bg_image.resize((WINDOW_WIDTH, WINDOW_HEIGHT), Image.Resampling.LANCZOS)
+    bg_image = ImageTk.PhotoImage(bg_image)
+
+    background_label = Label(welcome, image=bg_image)
+    background_label.image = bg_image  # 保持引用，防止垃圾回收
+    background_label.place(relwidth=1, relheight=1)
+
+    label = Label(welcome, text="欢迎使用手势识别系统", font=('Helvetica', 24, 'bold'), bg="lightblue", fg="white")
+    label.place(relx=0.5, rely=0.4, anchor=CENTER)
+
+    btn_continue = Button(welcome, text="继续", command=lambda: [welcome.destroy(), show_main_screen()], font=('Helvetica', 14), bg="yellow", fg="black", relief=SOLID)
+    btn_continue.place(relx=0.5, rely=0.6, anchor=CENTER)
+
+    welcome.mainloop()
+
+def show_main_screen():
+    global window
+    window = Tk()
+    window.title("手势识别")
+    set_window_position(window, WINDOW_WIDTH, WINDOW_HEIGHT)
+    style = ttk.Style(window)
+    style.theme_use('clam')
+
+    frame_controls = Frame(window, bg='lightgray', pady=10)
+    frame_controls.pack(fill=X)
+
+    frame_video = Frame(window, bg='white')
+    frame_video.pack(fill=BOTH, expand=True)
+
+    canvas = Canvas(frame_video, bg='black')
+    canvas.pack(fill=BOTH, expand=True, padx=20, pady=20)
+
+    status_label = Label(frame_controls, text="等待开始...", font=('Helvetica', 14), bg='lightgray')
+    status_label.pack(side=LEFT, padx=(10, 20))
+
+    btn_start = ttk.Button(frame_controls, text="开始", command=lambda: start_thread(canvas, status_label))
+    btn_start.pack(side=LEFT, padx=10)
+
+    btn_stop = ttk.Button(frame_controls, text="停止", command=lambda: stop_recognition_with_label(status_label))
+    btn_stop.pack(side=LEFT, padx=10)
+
+    btn_exit = ttk.Button(frame_controls, text="退出", command=lambda: exit_program())
+    btn_exit.pack(side=LEFT, padx=10)
+
+    # 创建一个样式对象并设置按钮的样式
+    style = ttk.Style(window)
+    style.configure('TButton', font=('Helvetica', 14))
+
+    window.mainloop()
+
+def start_thread(canvas, status_label):
+    global keep_running
+    if not keep_running:
+        status_label.config(text="正在识别...")
+        threading.Thread(target=lambda: start_recognition(callback=lambda img: update_canvas(canvas, img))).start()
+
+def stop_recognition_with_label(status_label):
+    stop_recognition()
+    status_label.config(text="已停止")
+
+def exit_program():
+    global window
+    stop_recognition()
+    release_camera()
+    window.destroy()
+
+def update_canvas(canvas, img):
+    img = Image.fromarray(img)
+    imgtk = ImageTk.PhotoImage(image=img)
+    canvas.create_image(320, 240, image=imgtk)
+    canvas.image = imgtk
+    canvas.update()
+
+if __name__ == "__main__":
+    main()