标签云动画
昨天晚上在一个其他站点的博客上看到了一个标签云动画，挺喜欢的，动手把它移植到了博客园上了，嘿嘿~
定制标签云主要涉及2个外部引用的js文件：swfobject.js 和 Zjmainstay_cnblogs_tags.js，和一个动画文件：tagcloud.swf，还有一个后台解析博客园标签生成标签云动画参数var tag的get_cnblogs_tags.php文件。swfobject.js 、tagcloud.swf是给Zjmainstay_cnblogs_tags.js调用来创建标签云动画用的。下面是Zjmainstay_cnblogs_tags.js的源码：
注：tags内容太长，这里提取出来：
var tags
var tags = 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$(document).ready(function(){ var tags = ""; //上面的tags //decodeURIComponent(tags); var widget_so2406005 = new SWFObject("http://files.cnblogs.com/Zjmainstay/tagcloud.swf", "tagcloudflash", "200", "200", "9", "#282828"); widget_so2406005.addParam("allowScriptAccess", "always"); widget_so2406005.addVariable("tcolor", "0xff0000"); widget_so2406005.addVariable("tcolor2", "0x333333"); widget_so2406005.addVariable("hicolor", "0x000000"); widget_so2406005.addVariable("tspeed", "100"); widget_so2406005.addVariable("distr", "true"); widget_so2406005.addVariable("mode", "tags"); widget_so2406005.addVariable("tagcloud", tags); widget_so2406005.write("ZjmainstayCnblogsSWFTags"); // $.ajax({ // url:'http://f7-preview.awardspace.com/zjmainstay.co.cc/cnblogs/get_cnblogs_tags.php?url='+encodeURIComponent('http://www.cnblogs.com/Zjmainstay/tag/'), // success:function(data){ // if(data != 'false') tags = data; // var widget_so2406005 = new SWFObject("http://www.yiiyaa.net/wp-content/plugins/wp-cumulus/tagcloud.swf?r=9147033", "tagcloudflash", "200", "200", "9", "#282828"); // widget_so2406005.addParam("allowScriptAccess", "always"); // widget_so2406005.addVariable("tcolor", "0xff0000"); // widget_so2406005.addVariable("tcolor2", "0x333333"); // widget_so2406005.addVariable("hicolor", "0x000000"); // widget_so2406005.addVariable("tspeed", "100"); // widget_so2406005.addVariable("distr", "true"); // widget_so2406005.addVariable("mode", "tags"); // widget_so2406005.addVariable("tagcloud", tags); // widget_so2406005.write("ZjmainstayCnblogsSWFTags"); // }, // error:function(){ // var widget_so2406005 = new SWFObject("http://www.yiiyaa.net/wp-content/plugins/wp-cumulus/tagcloud.swf?r=9147033", "tagcloudflash", "200", "200", "9", "#282828"); // widget_so2406005.addParam("allowScriptAccess", "always"); // widget_so2406005.addVariable("tcolor", "0xff0000"); // widget_so2406005.addVariable("tcolor2", "0x333333"); // widget_so2406005.addVariable("hicolor", "0x000000"); // widget_so2406005.addVariable("tspeed", "100"); // widget_so2406005.addVariable("distr", "true"); // widget_so2406005.addVariable("mode", "tags"); // widget_so2406005.addVariable("tagcloud", tags); // widget_so2406005.write("ZjmainstayCnblogsSWFTags"); // } // }); });
因为我调用的ajax响应服务器是一个免费php空间的，运行速度好慢，常常解析超时，因此被我屏蔽了。我采用了自己为var tag赋值的方式，而它的值是通过本地使用get_cnblogs_tags.php（ajax请求文件）获取博客园标签页解析并生成的，用户引用此部分ajax时，可自行修改$.ajax的url即可。get_cnblogs_tags.php源码如下：
View Code
<?php header("Content-type: text/html; charset=utf-8"); $url = $_GET['url']; if(empty($url)) $url = 'http://www.cnblogs.com/Zjmainstay/tag/'; $divData = getWebDiv('id="taglist"',$url); $pattern = '/<a(?:.*?)href="((?:http(?:s?):\/\/)?(?:[^\"\/]+)(?:[^\"]*))"(?:[^>]*?)>([^<]*?)<\/a>/i'; preg_match_all($pattern, $divData, $links); $urls = $links[1]; $tags = $links[2]; $output = ''; foreach($urls as $i => $url){ $output .= urlencode("<a href='{$url}' class='tag-link-118' title='1 个话题' style='font-size: 8pt;'>{$tags[$i]}</a>"); } if(!empty($output)) echo urlencode('<tags>').$output.urlencode('</tags>'); else echo 'false'; exit(0); function getWebDiv($div_id,$url=false,$data=false){ if($url !== false){ $data = file_get_contents( $url ); } $charset_pos = stripos($data,'charset'); if($charset_pos) { if(stripos($data,'utf-8',$charset_pos)) { $data = iconv('utf-8','utf-8',$data); }else if(stripos($data,'gb2312',$charset_pos)) { $data = iconv('gb2312','utf-8',$data); }else if(stripos($data,'gbk',$charset_pos)) { $data = iconv('gbk','utf-8',$data); } } preg_match_all('/<div/i',$data,$pre_matches,PREG_OFFSET_CAPTURE); //获取所有div前缀 preg_match_all('/<\/div/i',$data,$suf_matches,PREG_OFFSET_CAPTURE); //获取所有div后缀 $hit = strpos($data,$div_id); if($hit == -1) return false; //未命中 $divs = array(); //合并所有div foreach($pre_matches[0] as $index=>$pre_div){ $divs[(int)$pre_div[1]] = 'p'; $divs[(int)$suf_matches[0][$index][1]] = 's'; } //对div进行排序 $sort = array_keys($divs); asort($sort); $count = count($pre_matches[0]); foreach($pre_matches[0] as $index=>$pre_div){ //<div $hit <div+1 时div被命中 if(($pre_matches[0][$index][1] < $hit) && ($hit < $pre_matches[0][$index+1][1])){ $deeper = 0; //弹出被命中div前的div while(array_shift($sort) != $pre_matches[0][$index][1] && ($count--)) continue; //对剩余div进行匹配，若下一个为前缀，则向下一层，$deeper加1， //否则后退一层，$deeper减1，$deeper为0则命中匹配，计算div长度 foreach($sort as $key){ if($divs[$key] == 'p') $deeper++; else if($deeper == 0) { $length = $key-$pre_matches[0][$index][1]; break; }else { $deeper--; } } $hitDivString = substr($data,$pre_matches[0][$index][1],$length).'</div>'; break; } } return $hitDivString; }
Zjmainstay_cnblogs_tags.js中调用的SWFObject是从swfobject.js来的，而其参数SWFObject("http://files.cnblogs.com/Zjmainstay/tagcloud.swf", "tagcloudflash", "200", "200", "9", "#282828");中的tagcloud.swf，便是对tagcloud.swf文件的调用。
至此，源码部分已经介绍完了。接下来是博客园对它的引用。
博客园将其引用进来，主要是在博客园管理-设置-页首Html代码中加入：
<script type="text/javascript" src="http://files.cnblogs.com/Zjmainstay/swfobject.js"></script> <script type="text/javascript" src="http://files.cnblogs.com/Zjmainstay/Zjmainstay_cnblogs_tags.js"></script>
并在设置-页脚Html代码中加入：
<div id="ZjmainstayCnblogsSWFTags"></div>
即可。这里的id="ZjmainstayCnblogsSWFTags" 对应Zjmainstay_cnblogs_tags.js中的write("ZjmainstayCnblogsSWFTags")。此时的<div id="ZjmainstayCnblogsSWFTags"></div>会显示在页脚，
为了让它显示在“我的标签”下面，在 设置-通过CSS定制页面风格 加入：
#ZjmainstayCnblogsSWFTags{ position: absolute; left: 762px; top: 1186px; z-index:10000; }
将其绝对定位至我的标签下面即可。
（完）
********************** 分隔 ******************
这里会发现一个问题：拖动页面右侧导航条的时候会发现动画浮动，好像卡机的感觉，求解决。
********************** 补充 ******************
独立标签云用例，请在下面运行此段代码后面填入“6”后点击运行，查看运行效果。
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<html> <head> <title>Zjmainstay 的标签</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta http-equiv="Content-Language" content="zh-CN" /> <script type="text/javascript" src="http://files.cnblogs.com/Zjmainstay/jquery-1.6.2.min.js"></script> <!-- SWFObject embed by Geoff Stearns [email protected] http://blog.deconcept.com/swfobject/--> <script src="http://files.cnblogs.com/Zjmainstay/swfobject.js" type="text/javascript"></script> <script src="http://files.cnblogs.com/Zjmainstay/Zjmainstay_cnblogs_tags.js" type="text/javascript"></script> </head> <body> <div id="wp-cumulus" class="side_box"> <h3> Zjmainstay 的标签 </h3> <div id="ZjmainstayCnblogsSWFTags"></div> </div> </body> </html>
Tips:0表示第一段代码，1表示第二段...