234 lines
10 KiB
JavaScript
234 lines
10 KiB
JavaScript
function APlayer(option) {
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this.option = option;
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}
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APlayer.prototype.init = function () {
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this.element = this.option.element;
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this.music = this.option.music;
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// fill in HTML
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this.element.innerHTML = ''
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+ '<div class="aplayer-pic">'
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+ '<img src="' + this.music.pic + '">'
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+ '<div class="aplayer-button aplayer-pause aplayer-hide">'
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+ '<i class="demo-icon aplayer-icon-pause"></i>'
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+ '</div>'
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+ '<div class="aplayer-button aplayer-play">'
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+ '<i class="demo-icon aplayer-icon-play"></i>'
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+ '</div>'
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+ '</div>'
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+ '<div class="aplayer-info">'
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+ '<div class="aplayer-music">'
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+ '<a href="javascript:void((function(s,d,e,r,l,p,t,z,c){var%20f=\'http://v.t.sina.com.cn/share/share.php?appkey=2992571369\',u=z||d.location,p=[\'&url=\',e(u),\'&title=\',e(t||d.title),\'&source=\',e(r),\'&sourceUrl=\',e(l),\'&content=\',c||\'gb2312\',\'&pic=\',e(p||\'\')].join(\'\');function%20a(){if(!window.open([f,p].join(\'\'),\'mb\',[\'toolbar=0,status=0,resizable=1,width=440,height=430,left=\',(s.width-440)/2,\',top=\',(s.height-430)/2].join(\'\')))u.href=[f,p].join(\'\');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,\'\',\'\',\'' + this.music.pic + '\',\'' + '#APlayer音乐分享# ' + this.music.title + ' - ' + this.music.author + ' \',\'\',\'\'));" title="分享至微博"><i class="demo-icon aplayer-icon-weibo"></i></a>'
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+ '<span class="aplayer-title">' + this.music.title + '</span>'
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+ '<span class="aplayer-author"> - (＞﹏＜)加载中,好累的说...</span>'
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+ '</div>'
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+ '<div class="aplayer-controller">'
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+ '<div class="aplayer-bar-wrap">'
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+ '<div class="aplayer-bar">'
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+ '<div class="aplayer-loaded" style="width: 0"></div>'
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+ '<div class="aplayer-played" style="width: 0">'
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+ '<span class="aplayer-thumb"></span>'
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+ '</div>'
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+ '</div>'
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+ '</div>'
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+ '<span class="aplayer-time">'
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+ ' - <span class="aplayer-ptime">00:00</span> / <span class="aplayer-dtime">00:00</span>'
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+ '<div class="aplayer-volume-wrap">'
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+ '<i class="demo-icon aplayer-icon-volume-down"></i>'
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+ '<div class="aplayer-volume-bar-wrap">'
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+ '<div class="aplayer-volume-bar">'
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+ '<div class="aplayer-volume" style="height: 80%"></div>'
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+ '</div>'
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+ '</div>'
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+ '</div>'
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+ '</span>'
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+ '</div>'
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+ '</div>';
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// switch to narrow style
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if (this.option.narrow) {
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this.element.classList.add('aplayer-narrow');
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}
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// create audio element
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this.audio = document.createElement("audio");
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this.audio.src = this.music.url;
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this.audio.loop = true;
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this.audio.preload = 'metadata';
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// show audio time
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var _self = this;
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this.audio.addEventListener('durationchange', function() {
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_self.element.getElementsByClassName('aplayer-dtime')[0].innerHTML = _self.secondToTime(_self.audio.duration);
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});
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// can play: remove loading style, show loading progress bar
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this.audio.addEventListener('canplay', function() {
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_self.element.getElementsByClassName('aplayer-author')[0].innerHTML = ' - ' + _self.music.author;
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_self.loadedTime = setInterval(function () {
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var percentage = _self.audio.buffered.end(_self.audio.buffered.length - 1) / _self.audio.duration;
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_self.updateBar.call(_self, 'loaded', percentage, 'width');
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if (percentage === 1) {
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clearInterval(_self.loadedTime);
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}
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}, 500);
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});
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this.audio.addEventListener('error', function () {
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_self.element.getElementsByClassName('aplayer-author')[0].innerHTML = ' - ' + '加载失败 ╥﹏╥';
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});
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// play and pause button
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this.playButton = this.element.getElementsByClassName('aplayer-play')[0];
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this.pauseButton = this.element.getElementsByClassName('aplayer-pause')[0];
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this.playButton.addEventListener('click', function () {
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_self.play.call(_self);
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});
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this.pauseButton.addEventListener('click', function () {
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_self.pause.call(_self);
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});
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// control play progress
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this.playedBar = this.element.getElementsByClassName('aplayer-played')[0];
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this.loadedBar = this.element.getElementsByClassName('aplayer-loaded')[0];
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this.thumb = this.element.getElementsByClassName('aplayer-thumb')[0];
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this.bar = this.element.getElementsByClassName('aplayer-bar')[0];
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var barWidth;
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this.bar.addEventListener('click', function (event) {
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var e = event || window.event;
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barWidth = _self.bar.clientWidth;
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var percentage = (e.clientX - getElementViewLeft(_self.bar)) / barWidth;
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_self.updateBar.call(_self, 'played', percentage, 'width');
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_self.element.getElementsByClassName('aplayer-ptime')[0].innerHTML = _self.secondToTime(percentage * _self.audio.duration);
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_self.audio.currentTime = parseFloat(_self.playedBar.style.width) / 100 * _self.audio.duration;
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});
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this.thumb.addEventListener('mousedown', function () {
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barWidth = _self.bar.clientWidth;
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clearInterval(_self.playedTime);
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document.addEventListener('mousemove', thumbMove);
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document.addEventListener('mouseup', thumbUp);
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});
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function thumbMove (event) {
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var e = event || window.event;
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var percentage = (e.clientX - getElementViewLeft(_self.bar)) / barWidth;
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percentage = percentage > 0 ? percentage : 0;
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percentage = percentage < 1 ? percentage : 1;
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_self.updateBar.call(_self, 'played', percentage, 'width');
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_self.element.getElementsByClassName('aplayer-ptime')[0].innerHTML = _self.secondToTime(percentage * _self.audio.duration);
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}
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function thumbUp () {
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document.removeEventListener('mouseup', thumbUp);
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document.removeEventListener('mousemove', thumbMove);
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_self.audio.currentTime = parseFloat(_self.playedBar.style.width) / 100 * _self.audio.duration;
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_self.playedTime = setInterval(function () {
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_self.updateBar.call(_self, 'played', _self.audio.currentTime / _self.audio.duration, 'width');
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_self.element.getElementsByClassName('aplayer-ptime')[0].innerHTML = _self.secondToTime(_self.audio.currentTime);
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}, 100);
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}
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// control volume
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this.audio.volume = 0.8;
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this.volumeBar = this.element.getElementsByClassName('aplayer-volume')[0];
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var volumeBarWrap = this.element.getElementsByClassName('aplayer-volume-bar')[0];
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var volumeicon = _self.element.getElementsByClassName('aplayer-time')[0].getElementsByTagName('i')[0];
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var barHeight = 35;
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this.element.getElementsByClassName('aplayer-volume-bar-wrap')[0].addEventListener('click', function (event) {
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var e = event || window.event;
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var percentage = (barHeight - e.clientY + getElementViewTop(volumeBarWrap)) / barHeight;
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percentage = percentage > 0 ? percentage : 0;
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percentage = percentage < 1 ? percentage : 1;
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_self.updateBar.call(_self, 'volume', percentage, 'height');
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_self.audio.volume = percentage;
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if (_self.audio.muted) {
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_self.audio.muted = false;
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}
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if (percentage === 1) {
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volumeicon.className = 'demo-icon aplayer-icon-volume-up';
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}
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else {
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volumeicon.className = 'demo-icon aplayer-icon-volume-down';
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}
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});
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volumeicon.addEventListener('click', function () {
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if (_self.audio.muted) {
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_self.audio.muted = false;
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volumeicon.className = _self.audio.volume === 1 ? 'demo-icon aplayer-icon-volume-up' : 'demo-icon aplayer-icon-volume-down';
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_self.updateBar.call(_self, 'volume', _self.audio.volume, 'height');
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}
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else {
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_self.audio.muted = true;
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volumeicon.className = 'demo-icon aplayer-icon-volume-off';
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_self.updateBar.call(_self, 'volume', 0, 'height');
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}
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});
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// get element's view position
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function getElementViewLeft (element) {
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var actualLeft = element.offsetLeft;
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var current = element.offsetParent;
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var elementScrollLeft;
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while (current !== null){
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actualLeft += current.offsetLeft;
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current = current.offsetParent;
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}
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elementScrollLeft = document.body.scrollLeft + document.documentElement.scrollLeft;
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return actualLeft - elementScrollLeft;
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}
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function getElementViewTop (element) {
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var actualTop = element.offsetTop;
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var current = element.offsetParent;
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var elementScrollTop;
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while (current !== null){
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actualTop += current. offsetTop;
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current = current.offsetParent;
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}
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elementScrollTop = document.body.scrollTop + document.documentElement.scrollTop;
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return actualTop - elementScrollTop;
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}
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// autoplay
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if (this.option.autoplay) {
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this.play();
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}
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};
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// play
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APlayer.prototype.play = function () {
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this.playButton.classList.add('aplayer-hide');
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this.pauseButton.classList.remove('aplayer-hide');
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this.audio.play();
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var _self = this;
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this.playedTime = setInterval(function () {
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_self.updateBar.call(_self, 'played', _self.audio.currentTime / _self.audio.duration, 'width');
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_self.element.getElementsByClassName('aplayer-ptime')[0].innerHTML = _self.secondToTime(_self.audio.currentTime);
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}, 100);
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};
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// pause
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APlayer.prototype.pause = function () {
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this.pauseButton.classList.add('aplayer-hide');
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this.playButton.classList.remove('aplayer-hide');
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this.audio.pause();
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clearInterval(this.playedTime);
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};
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// update progress bar (loading progress bar, play progress bar)
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APlayer.prototype.updateBar = function (type, percentage, direction) {
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percentage = percentage > 0 ? percentage : 0;
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percentage = percentage < 1 ? percentage : 1;
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this[type + 'Bar'].style[direction] = percentage * 100 + '%';
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};
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// format second to 00:00
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APlayer.prototype.secondToTime = function (second) {
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var add0 = function (num) {
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return num < 10 ? '0' + num : '' + num;
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};
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var min = parseInt(second / 60);
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var sec = parseInt(second - min * 60);
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return add0(min) + ':' + add0(sec);
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}; |