[筆記]標籤雲(Tag Cloud)

參考資料：phydeaux3: Code for Beta Blogger Label Cloud

1. 加入CSS
   /* Label Cloud Styles
----------------------------------------------- */
#labelCloud {text-align:center;font-family:arial,sans-serif;}
#labelCloud .label-cloud li{display:inline;background-image:none !important;padding:0 5px;margin:0;vertical-align:baseline !important;border:0 !important;}
#labelCloud ul{list-style-type:none;margin:0 auto;padding:0;}
#labelCloud a img{border:0;display:inline;margin:0 0 0 3px;padding:0}
#labelCloud a{text-decoration:none}
#labelCloud a:hover{text-decoration:underline}
#labelCloud li a{}
#labelCloud .label-cloud {}
#labelCloud .label-count {padding-left:0.2em;font-size:9px;color:#000}
#labelCloud .label-cloud li:before{content:"" !important}
2. 加入Javascript變數宣告（lcShowCount=true 則顯示文章數，lcBlogURL 要改成自己的連結）
   <script type='text/javascript'>
// Label Cloud User Variables
var lcBlogURL = 'http://YOURBLOG.blogspot.com';
var maxFontSize = 20;
var maxColor = [0,0,255];
var minFontSize = 10;
var minColor = [0,0,0];
var lcShowCount = false;
</script>
3. 將
   <b:widget id='Label1' locked='false' title='Labels' type='Label'/>
   取代成

   <b:widget id='Label1' locked='false' title='Label Cloud' type='Label'>
   <b:includable id='main'>
     <b:if cond='data:title'>
       <h2><data:title/></h2>
     </b:if>
   
     <div class='widget-content'>
     <div id='labelCloud'/>
   <script type='text/javascript'>
   
   // Don't change anything past this point -----------------
   function s(a,b,i,x){
         if(a&gt;b){
             var m=(a-b)/Math.log(x),v=a-Math.floor(Math.log(i)*m)
                }
         else{
             var m=(b-a)/Math.log(x),v=Math.floor(Math.log(i)*m+a)
             }
         return v
      }
   
   var ta=0
   var c=[];
   var labelCount = new Array();  
   var ts = new Object;
   <b:loop values='data:labels' var='label'>
   var theName = &quot;<data:label.name/>&quot;;
   ts[theName] = <data:label.count/>;
   </b:loop>
   
   for (t in ts){
        if (!labelCount[ts[t]]){
              labelCount[ts[t]] = new Array(ts[t])
              }
           }
   tz = labelCount.length-1;
   lc2 = document.getElementById('labelCloud');
   ul = document.createElement('ul');
   ul.className = 'label-cloud';
   for(var t in ts){
       for (var i=0;3 &gt; i;i++) {
                c[i]=s(minColor[i],maxColor[i],ts[t]-ta,tz)
                 }      
            var fs = s(minFontSize,maxFontSize,ts[t]-ta,tz);
            li = document.createElement('li');
            li.style.fontSize = fs+'px';
            li.style.lineHeight = '1';
            a = document.createElement('a');
            a.title = ts[t]+' Posts in '+t;
            a.style.color = 'rgb('+c[0]+','+c[1]+','+c[2]+')';
            a.href = lcBlogURL+'/search/label/'+encodeURIComponent(t);
            if (lcShowCount){
                span = document.createElement('span');
                span.innerHTML = '('+ts[t]+') ';
                span.className = 'label-count';
                a.appendChild(document.createTextNode(t));
                li.appendChild(a);
                li.appendChild(span);
                }
             else {
                a.appendChild(document.createTextNode(t));
                li.appendChild(a);
                }
            ul.appendChild(li);
            abnk = document.createTextNode(' ');
            ul.appendChild(abnk);
       }
     lc2.appendChild(ul);    
   </script>
   
   <noscript>
       <ul>
       <b:loop values='data:labels' var='label'>
         <li>
           <b:if cond='data:blog.url == data:label.url'>
             <data:label.name/>
           <b:else/>
             <a expr:href='data:label.url'><data:label.name/></a>
           </b:if>
           (<data:label.count/>)
         </li>
       </b:loop>
       </ul>
   </noscript>
       <b:include name='quickedit'/>
     </div>
   
   </b:includable>
   </b:widget>