# 導(dǎo)入
import os
import time
import tkinter
import tkinter.filedialog
import threading
import pygame



root = tkinter.Tk()
root.title('音樂播放器')
root.geometry('460x600+500+100')
root.resizable(False,False)  # 不能拉伸

folder =''
res = []
num = 0
now_music = ''
num1 = 100


def buttonChooseClick():
    """
    添加文件夾
    :return:
    """
    global folder
    global res
    if not folder:
        folder = tkinter.filedialog.askdirectory()
        musics = [folder + '\\' + music
                  for music in os.listdir(folder) \
\
                  if music.endswith(('.mp3','.wav','.ogg'))]
        ret = []
        for i in musics:
            ret.append(i.split('\\')[1:])
            res.append(i.replace('\\','/'))

        var2 = tkinter.StringVar()
        var2.set(ret)
        lb = tkinter.Listbox(root,listvariable=var2)
        lb.place(x=50,y=110,width=360,height=400)

    if not folder:
        return

    global playing
    playing = True
    # 根據(jù)情況禁用和啟用相應(yīng)的按鈕
    buttonPlay['state'] = 'normal'
    buttonStop['state'] = 'normal'
    # =buttonPause['state'] = 'normal'
    pause_resume.set('播放')

def play():
    """
    播放音樂
    :return:
    """
    if len(res):
        pygame.mixer.init()
        global num
        while playing:
            if not pygame.mixer.music.get_busy():
                netxMusic = res[num]
                print(netxMusic)
                print(num)
                pygame.mixer.music.load(netxMusic.encode())
                # 播放
                pygame.mixer.music.play(1)
                if len(res) -1 == num:
                    num = 0
                else:
                    num = num + 1
                netxMusic = netxMusic.split('\\')[1:]
                musicName.set('playing......' + ''.join(netxMusic))
            else:
                time.sleep(0.1)


def buttonPlayClick():
    """
    點擊播放
    :return:
    """
    buttonNext['state'] = 'normal'

    buttonPrev['state'] = 'normal'
    # 選擇要播放的音樂文件夾
    if pause_resume.get() == '播放':
        pause_resume.set('暫停')
        global folder

        if not folder:
            folder = tkinter.filedialog.askdirectory()

        if not folder:
            return

        global playing

        playing = True

        # 創(chuàng)建一個線程來播放音樂，當(dāng)前主線程用來接收用戶操作
        t = threading.Thread(target=play)
        t.start()

    elif pause_resume.get() == '暫停':
        # pygame.mixer.init()
        pygame.mixer.music.pause()

        pause_resume.set('繼續(xù)')

    elif pause_resume.get() == '繼續(xù)':
        # pygame.mixer.init()
        pygame.mixer.music.unpause()

        pause_resume.set('暫停')



def buttonStopClick():
    """
    停止播放
    :return:
    """
    global playing
    playing = False
    pygame.mixer.music.stop()


def buttonNextClick():
    """
    下一首
    :return:
    """
    global playing
    playing = False
    pygame.mixer.music.stop()
    global num
    if len(res) == num:
        num = 0

    playing = True
    # 創(chuàng)建線程播放音樂,主線程用來接收用戶操作
    t = threading.Thread(target=play)
    t.start()


def closeWindow():
    """
    關(guān)閉窗口
    :return:
    """
    # 修改變量，結(jié)束線程中的循環(huán)

    global playing

    playing = False

    time.sleep(0.3)

    try:

        # 停止播放，如果已停止，

        # 再次停止時會拋出異常，所以放在異常處理結(jié)構(gòu)中

        pygame.mixer.music.stop()

        pygame.mixer.quit()

    except:

        pass

    root.destroy()


def control_voice(value=0.5):
    """
    聲音控制
    :param value: 0.0-1.0
    :return:
    """
    pygame.mixer.music.set_volume(float(value))


def buttonPrevClick():
    """
    上一首
    :return:
    """
    global playing

    playing = False

    pygame.mixer.music.stop()
    #
    pygame.mixer.quit()
    global num
    num += 1
    num -= 1
    if num == 0:
        num = len(res) - 2
        # num -= 1
    elif num == len(res) - 1:
        num -= 2
    else:
        num -= 2
        # num -= 1
    print(num)

    playing = True

    # 創(chuàng)建一個線程來播放音樂，當(dāng)前主線程用來接收用戶操作

    t = threading.Thread(target=play)

    t.start()


# 窗口關(guān)閉
root.protocol('WM_DELETE_WINDOW', closeWindow)

# 添加按鈕
buttonChoose = tkinter.Button(root,text='添加',command=buttonChooseClick)
# 布局
buttonChoose.place(x=50,y=10,width=50,height=20)

# 播放按鈕
pause_resume = tkinter.StringVar(root,value='播放')
buttonPlay = tkinter.Button(root,textvariable=pause_resume,command=buttonPlayClick)
buttonPlay.place(x=190,y=10,width=50,height=20)
buttonPlay['state'] = 'disabled'


# 停止按鈕
buttonStop = tkinter.Button(root, text='停止',command=buttonStopClick)
buttonStop.place(x=120, y=10, width=50, height=20)
buttonStop['state'] = 'disabled'

# 下一首
buttonNext = tkinter.Button(root, text='下一首',command=buttonNextClick)
buttonNext.place(x=260, y=10, width=50, height=20)
buttonNext['state'] = 'disabled'
# 上一首
buttonPrev = tkinter.Button(root, text='上一首',command=buttonPrevClick)
buttonPrev.place(x=330, y=10, width=50, height=20)
buttonPrev['state'] = 'disabled'


# 標(biāo)簽
musicName = tkinter.StringVar(root, value='暫時沒有播放音樂...')
labelName = tkinter.Label(root, textvariable=musicName)
labelName.place(x=10, y=30, width=260, height=20)

# 音量控制
# HORIZONTAL表示為水平放置，默認(rèn)為豎直,豎直為vertical
s = tkinter.Scale(root, label='音量', from_=0, to=1, orient=tkinter.HORIZONTAL,
                  length=240, showvalue=0, tickinterval=2, resolution=0.1,command=control_voice)
s.place(x=50, y=50, width=200)


# 顯示
root.mainloop()