#!/usr/local/bin/python3
"""slider adjust volume, checkbox to play digital music.
Exercise from headfirst book."""
import pygame.mixer
from tkinter import *

class SoundPanel(Frame):
    def __init__(self, app, mixer, sound_file):
        Frame.__init__(self, app)
        self.track = mixer.Sound(sound_file)
        self.track_playing = IntVar()

        track_button = Checkbutton(self, variable = self.track_playing,
                           command = self.track_toggle,
                           text = sound_file)

        track_button.pack(side = LEFT)
        self.volume = DoubleVar()
        self.volume.set(self.track.get_volume())
        volume_scale = Scale(self,variable = self.volume,
                         from_      = 0.0,
                         to         = 1.0,
                         resolution = 0.1,
                         command    = self.change_volume,
                         label      = "Volume",
                         orient     = HORIZONTAL)

        volume_scale.pack(side = RIGHT)
    
    def track_toggle(self):
        if self.track_playing.get() == 1:
            self.track.play(loops = -1)
        else:
            self.track.stop()
            
    def change_volume(self, v):
        self.track.set_volume(self.volume.get())
    """    
    def end_track():
        ...
    """

    

    
    


