import pygame
from pygame import locals
import os

pygame.init()  # 初始化
# 创建窗口
screen = pygame.display.set_mode((640, 480))
# 载入图片、资源
bg_img = pygame.image.load('background.png')  # 背景图
play_img = pygame.image.load('play.png')  # 播放按钮
stop_img = pygame.image.load('stop.png')  # 暂停按钮
last_img = pygame.image.load('last.png')  # 上一曲按钮
next_img = pygame.image.load('next.png')  # 下一曲按钮
logo_img = pygame.image.load('logo.png')  # 下一曲按

music_list=[]
path="C:\\Users\\user\\Desktop\\test"
filelist=os.listdir(path)
for i in filelist:
    if i[-4:]==".ogg" or i[-4:]==".wav":
        music_list.append(i)



num=-1
volume = 0.2
pygame.mixer.music.set_volume(volume)  # 初始播放音量
click = 0
play_button = stop_img

while True:
    for event in pygame.event.get():
        if event.type == locals.QUIT:
            exit()
        # 按键，控制声音大小
        if event.type == locals.KEYDOWN:
            if event.key == locals.K_UP:
                volume += 0.1
                if volume > 1:
                    volume = 1
                pygame.mixer.music.set_volume(volume)
            if event.key == locals.K_DOWN:
                volume -= 0.1
                if volume < 0:
                    volume = 0
                pygame.mixer.music.set_volume(volume)

        # 按下鼠标
        if event.type == locals.MOUSEBUTTONDOWN:
                # 次数增加
            if event.button==1:
                x,y=event.pos
                if x>270 and x<370 and y>350 and y<450:

                    click += 1
                    if click % 2 == 0:
                        play_button = stop_img
                        pygame.mixer.music.unpause()
                    else:
                        play_button = play_img
                        pygame.mixer.music.pause()
                if x > 120 and x < 220 and y > 350 and y < 400:
                    num-=1
                    if num < 0:
                        num = len(music_list)-1
                    pygame.mixer.music.load(path + "\\" +music_list[num])
                    pygame.mixer.music.play()
                    play_button=stop_img
                    click=0
                if x > 420 and x < 520 and y > 350 and y < 400:
                    num+=1
                    if num > len(music_list)-1:
                        
                        num = 0
                    pygame.mixer.music.load(path + "\\" +music_list[num])
                    pygame.mixer.music.play()
                    play_button=stop_img
                    click=0
    if pygame.mixer.music.get_busy() == False:
        num+=1
        if num > len(filelist)-1:
            num=0
        
        pygame.mixer.music.load(path + "\\"+music_list[num])
        pygame.mixer.music.play()

    # 绘制画面
    screen.blit(bg_img, (0, 0))      # 填充背景
    screen.blit(play_button, (270, 330))   # 暂停按钮
    screen.blit(logo_img, (170, 60))    # 中间logo图
    screen.blit(last_img, (120, 350))   # 上一曲
    screen.blit(next_img, (420, 350))   # 下一曲
    # 刷新画面
    pygame.display.update()