// ==UserScript==
// @name         卡饭助手(bbs.kafan.cn)
// @namespace    https://greasyfork.org/zh-CN/users/104201
// @version      0.2
// @description  改进帖子翻页功能
// @author       黄盐
// @match        http://bbs.kafan.cn/thread*
// @match        http://bbs.kafan.cn/forum*
// @grant        GM_addStyle
// @run-at       document-end
// ==/UserScript==
(function() {
'use strict';
//
GM_addStyle('.GM_page{position:fixed !important;top:0 !important; width:100% !important;}'+
'#GM_left{display:none;padding:30px 10px;border-radius:10px; vertical-align:middle;;font-size:40px;position:fixed;top:40%; left:5%;color:white; background:rgba(255,153,0,0.9);}'+
'#GM_right{display:none;padding:30px 10px;border-radius:10px; vertical-align:middle;;font-size:40px;position:fixed;top:40%; right:5%;color:white; background:rgba(255,153,0,0.9);}');
//创建元素
var a = document.createElement("div");
a.id = "GM_left";
a.setAttribute("onclick","document.querySelectorAll('div.pg')[0].firstChild.click();");
a.innerText = "◀";
var b = document.createElement("div");
b.id = "GM_right";
b.setAttribute("onclick","document.querySelectorAll('div.pg')[0].lastChild.click();");
b.innerText = "▶";
document.body.appendChild(a);
document.body.appendChild(b);
//页码切换组件跟随鼠标滚动
if(document.querySelectorAll('div.pg').length > 0){
document.onmousewheel = function(){
var page = document.querySelectorAll('div.pg')[0];
if(window.scrollY>300){
page.className = "pg GM_page";
} else {
page.className = "pg";
}
};
//上一页、下一页
document.onmousemove = function () {
var evt = window.event || arguments[0];
var r = document.querySelector('#GM_right');
var l = document.querySelector('#GM_left');
if(evt.clientX<window.innerWidth*0.2){
l.setAttribute("style","display:block;");
} else if(evt.clientX > window.innerWidth*0.8){
r.setAttribute("style","display:block;");
} else if( window.innerWidth*0.2<evt.clientX < window.innerWidth*0.8 ){
document.querySelector('#GM_left').setAttribute("style","display:none;");
document.querySelector('#GM_right').setAttribute("style","display:none;");
}
};
}
})();