萧瑟鸣风

马黑黑 · 发表于 2023-3-24 07:08

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马黑黑 · 发表于 2023-3-24 07:11

帖子代码

<style>
#papa {
margin: 100px 0 0 calc(50% - 593px);
width: 1024px;
height: 640px;
background: gray url('https://638183.freep.cn/638183/t23/webp/xsmf.webp') center/cover no-repeat;
box-shadow: 3px 3px 20px #000;
position: relative;
z-index: 1;
--state: paused;
}
#mplayer {
width: 80px;
height: 160px;
left: 10px;
bottom: 10px;
background: black;
border-radius: 8px;
box-shadow: 6px 4px 12px snow;
transition: .6s;
position: absolute;
pointer-events: none;
}
#mplayer::before, #mplayer::after {
position: absolute;
content: '';
}
#mplayer::before {
width: 30px;
height: 30px;
left: calc(50% - 15px);
bottom: 15px;
border-radius: 50%;
background: #333;
pointer-events: auto;
cursor: pointer;
border: 2px solid snow;
box-shadow: 0 0 10px blue;
animation: flash .3s infinite alternate var(--state);
}
#mplayer::after {
content:attr(data-tt);
top: 6px; right: 6px; bottom: 60px; left: 6px;
background: #333;
color: lightblue;
font-size: 14px;
text-align: center;
padding: 4px;
white-space:pre;
}
#mplayer:active { transform: rotate(5deg); }
#vid { display: none; }
#canv {
position: absolute;
display: block;
right: 10px;
top: 10px;
border-radius: 50%;
opacity: .35;
}
@keyframes flash {
to { box-shadow: 0 0 30px white; }
}
</style>
<div id="papa">
<canvas id="canv"></canvas>
<div id="mplayer" data-tt="HCPlayer
00:00
00:00"></div>
</div>
<audio id="aud" src="https://music.163.com/song/media/outer/url?id=30148242" loop></audio>
<video id="vid" src="https://img.tukuppt.com/video_show/2475824/00/02/06/5b50065e45b04.mp4" loop muted></video>
<script>
let ctx = canv.getContext('2d');
let ww = canv.width = 400, hh = canv.height = 400;
let loop = () => {ctx.drawImage(vid, 0, 0, ww, hh);if(!vid.paused) {requestAnimationFrame(loop);return;}}
let toMin = (val) => {if (!val) return '00:00';val = Math.floor(val);let min = parseInt(val / 60),sec = parseFloat(val % 60);if (min < 10) min = '0' + min;if (sec < 10) sec = '0' + sec;return min + ':' + sec;};
let mState = () => aud.paused ? (papa.style.setProperty('--state', 'paused'),vid.pause()) : (papa.style.setProperty('--state', 'running'),vid.play());
vid.playbackRate = 0.5;
vid.addEventListener('play', loop, false);
aud.addEventListener('play', () => mState());
aud.addEventListener('pause', () => mState());
aud.addEventListener('timeupdate', () => mplayer.dataset.tt = '萧瑟鸣风\n\n' + toMin(aud.duration) + '\n' + toMin(aud.currentTime));
mplayer.addEventListener('click', () => aud.paused ? aud.play() : aud.pause());
</script>

复制代码

马黑黑 · 发表于 2023-3-24 07:14

媒体未设置为自动播放。若需要，仅需在 audio 标签加入 autoplay 属性即可：

<audio id="aud" src="..." loop autoplay></audio>

马黑黑 · 发表于 2023-3-24 07:26

帖子遥控器是一个单标签。单标签能具备如此丰富的功能，得益于mplayer两个伪元素的加持与JS对CSS的操作能力：荧屏与按钮使用用::before和::after实现，JS通过操控dataset和CSS变量令其动态变化。

马黑黑 · 发表于 2023-3-24 07:31

#mplayer选择器的伪类 :active 用在这里效果不是特别明显。

在此，:active 伪类给元素设定一个效果，即，当遥控器处于活动中时，旋转 5 度——

#mplayer:active { transform: rotate(5deg); }

啥情况是处于活动之时？比如，点击操作。把点击动作放慢一点，这个旋转效果会明显看到。