import tkinter as tk
import cv2
import PIL.Image, PIL.ImageTk
import time

class MainWindow(tk.Frame):
    def __init__(self, *args, **kwargs):

        tk.Frame.__init__(self, *args, **kwargs)

        self.canvas = tk.Canvas(self, width=720, height=480)
        self.canvas.pack()

        self.vid = cv2.VideoCapture(0)

        self.btn_snapshot = tk.Button(self, text="Take photo", width=20, command=self.snapshot)
        self.btn_snapshot.pack(anchor=tk.CENTER, expand=True)

        self.Slider_1 = tk.Scale(self, length=300.0, from_=0, to=200, orient=tk.HORIZONTAL)
        self.Slider_1.pack()

        self.button = tk.Button(self, text="Create new window",
                                command=self.create_window)
        self.button.pack(side="top")

        self.show_frame()

    def show_frame(self):
        _, frame = self.vid.read()
        frame = cv2.flip(frame, 1)
        cv2image = cv2.cvtColor(frame, cv2.COLOR_BGR2RGBA)
        self.photo = PIL.ImageTk.PhotoImage(image=PIL.Image.fromarray(cv2image))
        self.canvas.create_image(0, 0, image=self.photo, anchor=tk.NW)
        tk.Label(root).after(10, self.show_frame)


    def create_window(self):
        tl = tk.Toplevel(self)
        tl.wm_title("Window new")
        l = tk.Label(tl, text="This is window")
        l.focus_force()
        l.pack(side="top", fill="both", expand=True, padx=100, pady=100)

    def snapshot(self):
        pass
        ret, frame = self.vid.get_frame() #will be soon
        if ret:
            cv2.imwrite("frame-" + time.strftime("%d-%m-%Y-%H-%M-%S") + ".jpg", cv2.cvtColor(frame, cv2.COLOR_RGB2BGR))

if __name__ == "__main__":
    root = tk.Tk()
    main = MainWindow(root)
    main.pack(side="top", fill="both", expand=True)
    root.mainloop()