迟来的祝贺 儿童节快乐
本帖最后由 亚伦影音工作室 于 2023-6-1 18:59 编辑 <br /><br /><style>#papa {
margin: 150px -300px;
width: 1164px;
height: 620px;
background: url('https://img-baofun.zhhainiao.com/pcwallpaper_ugc/static/168ec7c864954497490b205ff0a2d79c.jpg') center/cover no-repeat;
box-shadow:0px 0px 0px 6px #880000;
position: relative;
z-index: 1;
--state: paused;overflow:hidden;
}
#mplayer {position: absolute;
top:35%; left:60%;z-index: 20;
width: 400px;filter:hue-rotate(0deg);
height:400px;
}
#vid { display: none; }
#canv {width: 100%;height: 100%;
position: absolute;
display: block;
left:0%;
top: 0%;z-index: 4;
border-radius: 0%;
opacity: 1;
}
@keyframes flash {
to { box-shadow: 0 0 30px white; }
}
#fg{width: 100%;height: 100%;top:0px; left:0px;position: absolute; z-index: 5;animation: slider 3s linear infinite ;opacity: 0.25;}
@keyframes slider {0% { background:#ff0000 ; } 50% {background:#00ff00;} 100%{} }
</style>
<div id="papa">
<div id="fg"></div>
<canvas id="canv"></canvas>
<div id="mplayer"><img id="an" src="https://www.yiyuen.com/e/file/view/589074" width="100%" height="100%">
</div>
<div data-lrc="亚伦影音工作室" id="lrc">亚伦影音工作室</div>
</div>
<audio id="aud" src="https://www.qqmc.com/mp3/music179620514.mp3" autoplay loop></audio>
<video id="vid" src="https://img-baofun.zhhainiao.com/pcwallpaper_ugc/scene/7a6b1a756f55fc71a7114735478d4cde_preview.mp4" loop autoplay muted></video>
<script>
let ctx = canv.getContext('2d');
let ww = canv.width = 1000, hh = canv.height =250;
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 = '.\n\n' + toMin(aud.duration) + '\n' + toMin(aud.currentTime));
mplayer.addEventListener('click', () => aud.paused ? aud.play() : aud.pause());
fg.style.animationPlayState = aud.paused ? 'paused' : 'running';
aud.addEventListener('playing', () =>fg.style.animationPlayState = 'running');
aud.addEventListener('pause', () =>fg.style.animationPlayState = 'paused');
</script>
<style type="text/css">#lrc {
--state: paused;
--motion: cover2;
--tt: 2s;
--bg: linear-gradient(180deg, #880000, #880000);
position: absolute;z-index: 4;
left: 50%;
transform: translate(-50%);
top: 85%;
font:normal 3em 华文隶书;
color: #000078;
white-space: pre;
-webkit-background-clip: text;
filter:drop-shadow(#FFFFFF 1px 0 0)drop-shadow(#FFFFFF 0 1px 0)drop-shadow(#FFFFFF -1px 0 0) drop-shadow(#FFFFFF 0 -1px0);
}
#lrc::before {
position: absolute;
content: attr(data-lrc);
width: 20%;
height: 100%;
color: transparent;
overflow: hidden;
white-space: pre;
background: var(--bg);
-webkit-background-clip: text;
animation: var(--motion) var(--tt) linear forwards;
animation-play-state: var(--state);
}
@keyframes cover1 { from { width: 0; } to { width: 100%; } }
@keyframes cover2 { from { width: 0; } to { width: 100%; } }
</style>
<script >
(function() {
/*原始lrc歌词*/
let lrcStr = `
词：罗大佑
曲：罗大佑
编曲：罗大佑
池塘边的榕树上
知了在声声叫着夏天
操场边的秋千上
只有那蝴蝶停在上面
黑板上老师的粉笔
还在拼命叽叽喳喳写个不停
等待着下课等待着放学
等待游戏的童年
福利社里面什么都有
就是口袋里没有半毛钱
诸葛四郎和魔鬼党
到底谁抢到那支宝剑
隔壁班的那个男孩
怎么还没经过我的窗前
嘴里的零食手里的漫画
心里初恋的童年
没有人知道为什么
太阳总下到山的那一边
没有人能够告诉我
山里面有没有住着神仙
多少的日子里
总是一个人面对着天空发呆
就这么好奇就这么幻想
这么孤单的童年
总是要等到睡觉前
才知道功课只做了一点点
总是要等到考试以后
才知道该念的书都没有念
一寸光阴一寸金
老师说过寸金难买寸光阴
一天又一天一年又一年
迷迷糊糊的童年
一天又一天一年又一年
盼望长大的童年
`;
/*变量 ：mKey - 当前歌词索引；mFlag ：调用关键帧动画索引；averAdd ：平均值补偿*/
let mKey = 0, mFlag = true, averAdd = 0.3;
/*函数 ：获取每句歌词用时，歌词用时若超过平均值则取平均值，最后一句歌词则取平均值*/
let lrcTime = (ar) => {
let tmpAr = [];
for(j = 0; j <ar.length - 1; j ++) {
if(j !== ar.length - 1) tmpAr = parseFloat((ar - ar).toFixed(1));
}
let aver = parseInt(tmpAr.reduce((a,b) => a + b) / (tmpAr.length - 1)) + averAdd;
tmpAr.push(aver);
tmpAr.forEach((item,key) => {
ar = item > aver ? aver : item;
});
return ar;
};
/*函数 ：从原始lrc歌词获取信息并存入 n*3 数组*/
let getLrcAr = (text) => {
let lrcAr = [];
let calcRule = ;
for(x of text.split('\n')) {
let ar = [];
let re = /\d+[\.:]\d+([\.:]\d+)?/g;
let geci = x.replace(re,'');
if(geci) {
geci = geci.replace(/[\[\]\'\"\t,]s?/g,'');
let time = x.match(re);
if(time != null) {
for(y of time) {
let tmp = y.match(/\d+/g);
let sec = 0;
for(z in tmp) sec += tmp * calcRule;
ar = ;
lrcAr.push(ar);
}
}
}
}
lrcAr.sort((a,b)=> a - b);
return(lrcTime(lrcAr));
};
/*函数 ：模拟显示同步歌词*/
let showLrc = (time) => {
let name = mFlag ? 'cover1' : 'cover2';
lrc.innerHTML = lrcAr;
lrc.dataset.lrc = lrcAr;
lrc.style.setProperty('--motion', name);
lrc.style.setProperty('--tt', time + 's');
lrc.style.setProperty('--state', 'running');
mKey += 1;
mFlag = !mFlag;
};
/*函数 ：处理当前歌词索引 mKey*/
let calcKey = () => {
for (j = 0; j < lrcAr.length; j++) {
if (aud.currentTime <= lrcAr) {
mKey = j - 1;
break;
}
}
if (mKey < 0) mKey = 0;
if (mKey > lrcAr.length - 1) mKey = lrcAr.length - 1;
let time = lrcAr - (aud.currentTime - lrcAr);
showLrc(time);
};
/*格式化时间信息*/
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;
}
/*函数 ：关键帧动画状态切换*/
let mState = () => aud.paused ? (lrc.style.setProperty('--state','paused'),mplayer.style.animationPlayState = 'paused') : (lrc.style.setProperty('--state','running'),mplayer.style.animationPlayState = 'running');
/*监听播放进度*/
aud.addEventListener('timeupdate', () => {
for (j = 0; j < lrcAr.length; j++) {
if (aud.currentTime >= lrcAr) {
cKey = j;
if (mKey === j) showLrc(lrcAr);
else continue;
}
}
});
aud.addEventListener('pause', () => mState());/*监听暂停事件*/
aud.addEventListener('play', () => mState());/*监听播放事件*/
aud.addEventListener('seeked', () => calcKey());/*监听查询事件*/
let lrcAr = getLrcAr(lrcStr); /*获得歌词数组*/
})();
</script>
<script>
if ('getContext' in document.createElement('canvas')) {
HTMLImageElement.prototype.play = function() {
if (this.storeCanvas) {
// 移除存储的canvas
this.storeCanvas.parentElement.removeChild(this.storeCanvas);
this.storeCanvas = null;
// 透明度还原
image.style.opacity = '';
}
if (this.storeUrl) {
this.src = this.storeUrl;
}
};
HTMLImageElement.prototype.stop = function() {
var canvas = document.createElement('canvas');
// 尺寸
var width = this.width, height = this.height;
if (width && height) {
// 存储之前的地址
if (!this.storeUrl) {
this.storeUrl = this.src;
}
// canvas大小
canvas.width = width;
canvas.height = height;
// 绘制图片帧（第一帧）
canvas.getContext('2d').drawImage(this, 0, 0, width, height);
// 重置当前图片
try {
this.src = canvas.toDataURL("image/gif");
} catch(e) {
// 跨域
this.removeAttribute('src');
// 载入canvas元素
canvas.style.position = 'absolute';
// 前面插入图片
this.parentElement.insertBefore(canvas, this);
// 隐藏原图
this.style.opacity = '0';
// 存储canvas
this.storeCanvas = canvas;
}
}
};
}
var image = document.getElementById("an"),
button = document.getElementById("mplayer");
if (image && button) {
button.onclick = function() {
if (this.value == '') {
image.play();
this.value = '.';
} else {
image.stop();
this.value = '';
}
};
}
</script>
给力动画，很漂亮的动图，感谢分享！{:4_187:} 一点不迟呢，好可爱的帖子，借亚伦老师好帖同祝大小朋友们节日快乐{:4_187:} 节日帖子都亮起来{:4_173:} 很棒的作品 变色效果，亚伦好制作{:4_199:}
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