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| // ==UserScript== | |
| // @name 豆瓣 ReadFree 传送门 | |
| // @namespace https://github.com/JiajunW/douban2readfree | |
| // @description 在“豆瓣读书”页面增加到ReadFree电子书的传送门 | |
| // @icon https://raw.githubusercontent.com/JiajunW/douban2readfree/master/res/icon.png | |
| // @include http://book.douban.com/subject/* | |
| // @version 1.0.0 | |
| // @grant GM_xmlhttpRequest | |
| // @grant GM_addStyle | |
| // @downloadURL none | // ==/UserScript==<< |
| (function() { | |
| function get_book_id() { | |
| var path = document.location.pathname; | |
| var re = /^\/subject\/(\d+)/g; | |
| var matches = re.exec(path); | |
| if (matches && matches.length > 1) { | |
| return parseInt(matches[1]); | |
| } | |
| } | |
| function add_readfree_style() { | |
| var custom_css = "\ | |
| #readfree-link {\ | |
| position: fixed;\ | |
| top: 160px;\ | |
| left: -10px;\ | |
| padding: 10px 20px 10px 30px;\ | |
| border-radius: 10px;\ | |
| background: -webkit-linear-gradient(top, rgba(50, 74, 105, 0.8), rgba(50, 74, 105, 1));\ | |
| background: -mozc-linear-gradient(top, rgba(50, 74, 105, 0.8), rgba(50, 74, 105, 1));\ | |
| background: linear-gradient(to bottom, rgba(50, 74, 105, 0.8), rgba(50, 74, 105, 1));\ | |
| }\ | |
| \ | |
| #readfree-link > a {\ | |
| color: white;\ | |
| }\ | |
| "; | |
| GM_addStyle(custom_css); | |
| } | |
| function dom(tag, attr, inner) { | |
| var tag = document.createElement(tag); | |
| for (var key in attr) { | |
| if (attr.hasOwnProperty(key)) { | |
| tag.setAttribute(key,attr[key]); | |
| } | |
| } | |
| if (inner) { | |
| tag.innerHTML = inner; | |
| } | |
| return tag; | |
| } | |
| var id = get_book_id(); | |
| if (id === undefined) { | |
| return; | |
| } | |
| var rf_url = 'http://readfree.me/book/' + id; | |
| GM_xmlhttpRequest({ | |
| method: "GET", | |
| url: rf_url, | |
| onload: function(response) { | |
| if (response.readyState == 4 && response.status == 200) { | |
| add_readfree_style(); | |
| var panel = dom('div', { id : 'readfree-link' }), | |
| ahref = dom('a', { href : rf_url, target : '_blank' }, 'ReadFree!') | |
| panel.appendChild(ahref); | |
| document.body.appendChild(panel); | |
| } | |
| } | |
| }); | |
| })(); |