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81041

2019-06-20 ab3c4acf83f54f8449ca8664c4a2bb79bd30f297

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// 设置语音播报对象 
var Voice = function() { 
    this.speak = window.speechSynthesis; 
    this.tospeak = new SpeechSynthesisUtterance(''); 
    this.voice = ''; 
    this.zh_CN = false; 
    this.rate = 1.5;  
    this._setLang();            // 获取并检测是否有中文的环境 
    this.timeInterval = 27;        //循环间隔(秒) 
    this.speak_enable = true;            //ture:开启语音播报         false:停止语音播报 
}; 
 
// 播报语音        (调用发声的方法时请使用延时发声) 
Voice.prototype.play = function(txt,callback) { 
    if(!this.zh_CN) { 
        console.info('你的电脑不支持中文播报！');         
    } 
    _timeInterval = this.timeInterval; 
    //console.info(this.speak_enable); 
    if(!this.speak_enable){                                    //识别是否开启声音播报 
        if(callback && typeof callback == 'function'){ 
            setTimeout(function(){ 
                callback(); 
            }, Math.abs(_timeInterval)*1000); 
        } 
        return; 
    } 
    this.cancel(); 
    this.tospeak.text = txt; 
    this.tospeak.voice = this.voice;    // 设定中文播报 
    this.tospeak.rate = this.rate; 
    //console.info(to_speak); 
    var starttime = new Date(); 
    this.speak.speak(this.tospeak); 
    //console.info(this.tospeak); 
    this.tospeak.onend = function(event) {     
        //console.info("播放结束"); 
        if(callback && typeof callback == 'function'){ 
            var endtime = new Date(); 
            var timelong = (endtime.getTime()-starttime.getTime())/1000; 
            //console.info(parseInt(_timeInterval)+"==="+parseInt(timelong)); 
            if(timelong > this.timeInterval){                 
                callback(); 
            }else{ 
                setTimeout(function(){ 
                    callback(); 
                }, Math.abs(_timeInterval-timelong)*1000); 
            } 
        } 
    }; 
     
 
}; 
 
// 开启/关闭当前语音播报 （依赖与base.js导入的Cookie方法） 
Voice.prototype.changeSpeak = function(bool) { 
    this.speak_enable = bool; 
    setCookie('voice', bool); 
    // 退出当前播报 
    if(!bool) { 
        this.cancel(); 
    } 
}; 
 
// 退出当前播报 
Voice.prototype.cancel = function() { 
    this.speak.cancel(); 
}; 
 
 
//停止语音播报 
Voice.prototype.stopSpeak = function() { 
    this.speak.cancel(); 
    this.speak_enable = false; 
}; 
 
// 检查当前语言环境 
Voice.prototype._setLang = function() { 
    var _this = this; 
    setTimeout(function(){ 
        var voices = _this.speak.getVoices(); 
        for(var i=0; i<voices.length; i++) { 
            var _voices = voices[0]; 
            //console.info(_voices); 
            if(_voices.lang === 'zh-CN') { 
                _this.zh_CN = true; 
                _this.voice = _voices; 
            } 
        } 
    }, 0); 
}; 
 
 
 
var voice = new Voice(); 
var voiceStatus = checkPageVoiceStatus(); 
// 设置初始语音播报状态 
voice.changeSpeak(voiceStatus); 
voice.cancel(); 
 
// 设置初始化语音播报图标 
if(!voiceStatus) { 
    $('.web-status .cell-list.voice').addClass('close-voice'); 
} 
 
// 点击声音的图标 
$('.web-status .cell-list.voice').click(function() { 
    $(this).toggleClass('close-voice'); 
    // 判断是否关闭声音 
    if($(this).hasClass('close-voice')) { 
        voice.changeSpeak(false); 
    }else { 
        voice.changeSpeak(true); 
    } 
}); 
 
// 获取页面语音是否开启 
function checkPageVoiceStatus() { 
    var voiceStatus = getCookie('voice'); 
    // 设置初始语音播报状态 
    voiceStatus = voiceStatus=='false'?false:true; 
     
    return voiceStatus; 
}