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As+lightbox+js实现实时加载图片进度

2023-06-15 18:10:29
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  不久前在csdn的js板块看到一个as+js+lightbox动态加载图片显示进度的程序,随便帮改了下代码。后面要帮女朋友搞她设计作品的展示时发现代码中的flash只提供了成功加载时的回调函数,而如果图片未找到或者刚开始加载时没有什么提示。所以自己把swf反编译了一下,修改了as脚本,使之拥有了4个回调,加载图片开始,过程,成功加载和错误的回调,增强下用户体验O(∩_∩)O~

  效果如下

As+lightbox+js实现实时加载图片进度

 

As+lightbox+js实现实时加载图片进度

As+lightbox+js实现实时加载图片进度
  
  下面列出as脚本,js脚本的主要代码供大家学习下。lightbox效果已经继承到了design.js文件里面了。


  as脚本部分,loadSwf.fla第一帧的脚本

//loadUrl:要加载的图片地址URL//loading:加载过程反馈信息的js函数名 ,参数 function(p:完成百分比,loaded:已经加载的,total:总大小) ///Success:成功加载完成后执行的js函数名,参数 function(w:图片原始长度,h:图片原始宽)//Failure:加载失败执行的函数名称,参数 function(msg:错误信息)function loadPicture(loadUrl,loading,Success,Failure){    var _loc2 = random(1000000000);    _root.createEmptyMovieClip("loadMc" + _loc2, _root.getNextHighestDepth());//这里flash使用了一个类as.loadPic,在下面贴出代码    new as.loadPic(_root["loadMc" + _loc2], loadUrl, function (ob){//成功时调用js传递进来的js回调函数,下面同理        new flash.external.ExternalInterface.call(Success,loadUrl, ob._width, ob._height);    }, function (loadN,loaded,total){//过程        new flash.external.ExternalInterface.call(loading, loadN, loaded,total);    }, function (err){//发生错误        new flash.external.ExternalInterface.call(Failure,err);    });} // End of the function//使用flash.external.ExternalInterface接口注册给js调用的函数flash.external.ExternalInterface.addCallback("forJS", null, loadPicture);
 

loadPic.as源代码

class as.loadPic{    function loadPic(ob, uri,Success, loadIng,Failure){        if (ob && uri){            var _loc2 = new MovieClipLoader();            var _loc1 = new Object();            var loadnum;            _loc1.onLoadStart = function (tmc){            };            _loc1.onLoadProgress = function (tmc, loadedBytes, totalBytes){                loadnum = int(loadedBytes / totalBytes * 100);                loadIng(loadnum,loadedBytes,totalBytes);            };            _loc1.onLoadComplete = function (tmc){            };            _loc1.onLoadInit = function (tmc){                if (Success && typeof(Success) == "function")Success(tmc);            };            _loc1.onLoadError = function (tmc, errc){                if (Failure && typeof(Failure) == "function")Failure(errc);            };            _loc2.addListener(_loc1);            _loc2.loadClip(uri, ob);        }     } }
 

design.js源代码

if(typeof(Showbo)=="undefined")Showbo={};Showbo.Design={    lightBox:null,    dvPopDesign:null,    tool:null,    dvpic:null,    loading:null,    dvpro:null,    dvinfo:null,    newA:null,    step:100,    min:300,    pos:{x:0,y:0,ex:0,ey:0,drag:false},    /*Flash中调用的js函数*/    Start:function(){      this.dvpro.style.width="1%";	  this.dvinfo.innerHTML="准备下载,请等待...";    },    Loading:function(p,loaded,total){      this.dvpro.style.width=p+"%";	  this.dvinfo.innerHTML="已下载:"+Showbo.round(loaded/1024,1)+"kb,总共"+Showbo.round(total/1024,1)+"kb,完成"+p+'%';    },    Success:function(picurl,w,h){//bmp不能取到w和h参数,汗。。。      this.loading.style.display='none';      if(w>100){this.w=w;this.h=h;}      this.dvpic.parentNode.style.display=this.tool.style.display='block';      this.dvpic.src=picurl;      this.newA.href=picurl;      var me=this;      setTimeout(function(){me.Org();},100);    },    Failure:function(msg){      //RLNotFound:找不到文件或者服务器关闭----当服务器关闭或找不到文件时      //LoadNeverCompleted:当下载由于服务器超载、服务器崩溃等原因中断时。      this.dvinfo.innerHTML='<font color="red">'+msg+'</font> <a href="javascript:Showbo.Design.hide();">关闭</a>';    },    //js调用flash中的方法,默认名为forJS    JScallSWF:function(picurl){       if(window["swfId"]&&window["swfId"].forJS)window["swfId"].forJS(picurl,'Showbo.Design.Loading','Showbo.Design.Success','Showbo.Design.Failure');//ie       else if(Showbo.$("swfId").forJS)Showbo.$("swfId").forJS(picurl,'Showbo.Design.Loading','Showbo.Design.Success','Showbo.Design.Failure');	   else if(document["swfId"]&&document["swfId"].forJS)document["swfId"].forJS(picurl,'Showbo.Design.Loading','Showbo.Design.Success','Showbo.Design.Failure');//ff    },    Org:function(){      this.dvpic.style.cssText="";//移除所有样式,不要使用removeAttribu("style"),在ie6下速度奇慢      this.dvPopDesign.style.height=this.dvPopDesign.style.width='auto';      this.onResize();    },    Drag:function(e){      Showbo.Design.cancelEvent(e);      e=e||event;      if((Showbo.IsIE&&e.button!=1)||(!Showbo.IsIE&&e.button!=0))return false;      if(e.type.indexOf('mousedown')!=-1){        if(Showbo.IsIE)this.setCapture();        Showbo.Design.pos.x=parseInt(Showbo.Design.dvPopDesign.style.left,10);        Showbo.Design.pos.y=parseInt(Showbo.Design.dvPopDesign.style.top,10);        Showbo.Design.pos.ex=e.clientX;        Showbo.Design.pos.ey=e.clientY;        Showbo.Design.pos.drag=true;      }      else if(e.type.indexOf('mousemove')!=-1){        if(Showbo.Design.pos.drag){          Showbo.Design.dvPopDesign.style.left=Showbo.Design.pos.x+e.clientX-Showbo.Design.pos.ex+'px';          Showbo.Design.dvPopDesign.style.top=Showbo.Design.pos.y+e.clientY-Showbo.Design.pos.ey+'px';                  }      }      else if(e.type.indexOf('mouseup')!=-1){       if(Showbo.IsIE)this.releaseCapture();        Showbo.Design.onResize();        Showbo.Design.pos.drag=false;      }    },    mouseWheel:function(e){      Showbo.Design.cancelEvent(e);      e=e||event;      var w=this.offsetWidth,h=this.offsetHeight,refH=Showbo.Design.step*h/w;      if((Showbo.IsIE&&e.wheelDelta<0)||(!Showbo.IsIE&&e.detail>0)){//往下扩大       // if(this.offsetWidth<Showbo.Design.w){           this.style.width=w+Showbo.Design.step+'px';           this.style.height=h+refH+'px';           Showbo.Design.dvPopDesign.style.width=this.offsetWidth+'px';       // }      }else{//缩小         if(w-Showbo.Design.step>=Showbo.Design.min){           this.style.width=w-Showbo.Design.step+'px';           this.style.height=h-refH+'px';           Showbo.Design.dvPopDesign.style.width=this.offsetWidth+'px';         }      }     Showbo.Design.onResize();    },    documentMouseWheel:function(e,IsTimer){       var me=Showbo.Design,ds=me.dvPopDesign;       if(!IsTimer)setTimeout(function(){me.documentMouseWheel(null,true)},100);       else if(ds.offsetHeight<Showbo.BodyScale.y)ds.style.top=document.documentElement.scrollTop+(Showbo.BodyScale.y-ds.offsetHeight)/2+'px';    },    InitDesign:function(){//需要收到调用此方法,要不ie下使用append增加的flash不能调用其方法,奇怪。。。      var html='<p id="designTools"><a href="#" title="在新窗口中打开" target="_blank"></a><a class="just"  href="javascript:Showbo.Design.Org()" title="实际大小"></a>'        +'<a class="close" title="关闭" href="javascript:Showbo.Design.hide()"></a><span>鼠标滚动缩放图片,按下左键拖动</span></p>'        +'<div class="pic"><img  id="designPic"/></div>'+        '<div class="loading" id="designLoading"><div class="pro" id="designPro"></div><div id="designInfo"></div></div>';      document.write('<div class="popdesign" id="dvPopDesign">'+html+'</div>');      this.dvPopDesign=Showbo.$('dvPopDesign');      document.write('<div id="ShowBolightBox"></div>');      this.lightBox=Showbo.$('ShowBolightBox');      this.tool=Showbo.$('designTools');      this.newA=Showbo.$s(this.tool,'a')[0];      this.dvpic=Showbo.$('designPic');      this.dvpic.onmousedown=this.dvpic.onmousemove=this.dvpic.onmouseup=this.Drag;      if(Showbo.IsIE)this.dvpic.onmousewheel=this.mouseWheel;      else this.dvpic.addEventListener('DOMMouseScroll',this.mouseWheel,false);      this.loading=Showbo.$('designLoading');      this.dvpro=Showbo.$('designPro');      this.dvinfo=Showbo.$('designInfo');      document.write('<div class="myloadswf">');      document.write(Showbo.IsIE?'<object id=swfId classid=clsid:D27CDB6E-AE6D-11cf-96B8-444553540000><param name="src" value="/images/loadSwf.swf"></object>':                    '<embed id="swfId" type="application/x-shockwave-flash" src="/images/loadSwf.swf"/>');      document.write('</div>');    },    checkDOMLast:function(){//此方法非常关键,要不无法显示弹出窗口。两个对象dvPopDesign和lightBox必须处在body的最后两个节点内      if(document.body.lastChild!=this.lightBox){        document.body.appendChild(this.dvPopDesign);        document.body.appendChild(this.lightBox);      }    },    hideSelects:function(vis){      var sels=Showbo.$s('select');      for(var i=0;i<sels.length;i++)sels[i].style.visibility=vis;    },    show:function(picurl,e){      this.checkDOMLast();//检查是否在最后           this.lightBox.style.display=this.dvPopDesign.style.display='block';      this.dvpic.parentNode.style.display=this.tool.style.display='none';      this.dvpic.src='';      this.loading.style.display='block';      this.dvPopDesign.style.height=this.dvPopDesign.style.width='auto';      this.onResize();      this.JScallSWF(picurl);      this.Start();      this.cancelEvent();      var me=this;      //添加事件      if(Showbo.IsIE)document.documentElement.onmousewheel=this.documentMouseWheel;      else document.documentElement.addEventListener('DOMMouseScroll',this.documentMouseWheel,false);      this.hideSelects('hidden');    },    cancelEvent:function(e){      if(e){        e.stopPropagation();        e.preventDefault();              }      else if(window.event){       window.event.returnValue=false;window.event.cancelBubble=true;      }    },    hide:function(){      if(!this.dvPopDesign)return false;      //移除事件      if(Showbo.IsIE)document.documentElement.onmousewheel=null;      else document.documentElement.removeEventListener('DOMMouseScroll',this.documentMouseWheel,false);      this.dvPopDesign.style.display='none';      this.lightBox.style.display='none';      this.hideSelects('visible');    },    onResize:function(){       Showbo.initBodyScale();        var ds=Showbo.Design.dvPopDesign,lbox=Showbo.Design.lightBox,oL,oH,scrollTop=document.documentElement.scrollTop;       oL=ds.offsetWidth;oH=ds.offsetHeight;       if(!Showbo.Design.pos.drag){        ds.style.left=oL>Showbo.BodyScale.otx?0:Math.floor((Showbo.BodyScale.x-ds.offsetWidth)/2)+'px';        ds.style.top=scrollTop+(oH>Showbo.BodyScale.oty?0:Math.floor((Showbo.BodyScale.y-ds.offsetHeight)/2))+'px';       }else{         oL+=(ds.style.left?parseInt(ds.style.left):0);         oH+=(ds.style.top?parseInt(ds.style.top):0);       }       Showbo.Design.lightBox.style.width=(oL<Showbo.BodyScale.otx?Showbo.BodyScale.otx:oL)+'px';       Showbo.Design.lightBox.style.height=(oH<Showbo.BodyScale.oty?Showbo.BodyScale.oty:oH)+'px';       }}
 
 


 

widget.css样式表

+展开-CSS#ShowBolightBox{display:none;-moz-opacity:0.5;filter:alpha(opacity=50);opacity:0.5;background-color:#000000;z-index:100;position:absolute;left:0px;top:0px;}.popdesign{position:absolute;color:#999999;padding:5px 10px 10px 10px;z-index:999;background:#ffffff;font-size:12px;display:none;}.popdesign p{margin:0px;padding:0px;display:none;}.popdesign p a{float:left;background:transparent url(../images/imgzoom.gif) no-repeat 0px 0px;width:17px;height:17px;margin:5px;}.popdesign p a:hover{background-position:0px -39px;}.popdesign p a.just{background-position:-40px -0px;}.popdesign p a.just:hover{background-position:-40px -39px;}.popdesign p a.close{background-position:-80px -0px;}.popdesign p a.close:hover{background-position:-80px -39px;}.popdesign p span{float:left;margin:8px auto auto 20px;}.popdesign div.pic{clear:both;display:none;}.popdesign div.pic img{cursor:move;}.popdesign div.loading{margin:40px;width:300px;display:block;}.popdesign div.loading .pro{height:10px;width:1%;background:#ff0000;line-height:10px;overflow:hidden;}.myloadswf{position:absolute;left:200px;top:1px;height:1px;width:1px;overflow:hidden;line-height:1px;z-index:-2;}.myloadswf object,.myloadswf embed{width:1px;height:1px;}
 

测试页面index.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">><html xmlns="http://www.w3.org/1999/xhtml"><head>   <meta http-equiv="content-type" content="text/html;charset=utf-8" />   <title>编程设计网--设计作品title>   <meta id="metaKey" name="Keywords" content="平面设计,网页设计,的士广告,单页宣传,户外广告" />   <meta id="metaDes" name="Description" content="平面设计,网页设计,平面设计,网页设计,的士广告,单页宣传,户外广告" />   <link href="css/widget.css" type="text/css" rel="Stylesheet" />   <script type="text/javascript" src="js/design.js"></script> </head><body>    <img title="点击查看大图" src="1_s.gif" onclick="Showbo.Design.show('1.gif')" /><br >    <img title="点击查看大图" src="2_s.jpg" onclick="Showbo.Design.show('2.jpg')" /><br ><br >   <br ><br ><br > 这张图片特意传递错误的地址,测试错误回调函数<br >    <img title="点击查看大图" src="1_s.gif" onclick="Showbo.Design.show('错误的图片地址.gif',event)" /><br >    <script type="text/javascript">Showbo.Design.InitDesign();//这里需要手动调用初始化函数,要不在ie6下不能调用flash中的方法,郁闷ing....</script> </body></html><script type="text/javascript">Showbo.initBodyScale(true);</script>
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