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網頁閱讀模式

[ALT+R] 將任何一個網頁中影響您閱讀的圖片，視頻，廣告等無關內容過濾，僅查看最關注的那一部分內容。特別適合各種內容閱讀型網頁。同時提供將所選區域的 HTML 代碼導出的功能。

目前為 2017-01-23 提交的版本，檢視 最新版本。

  1. // ==UserScript==
  2. // @name                Page Read Mode
  3. // @name:zh-CN          网页阅读模式
  4. // @name:zh-TW          網頁閱讀模式
  5. // @description         [ALT+R] Content reader on any page, selecting the text area automatically or manually.
  6. // @description:zh-CN   [ALT+R] 将任何一个网页中影响您阅读的图片，视频，广告等无关内容过滤，仅查看最关注的那一部分内容。特别适合各种内容阅读型网页。同时提供将所选区域的 HTML 代码导出的功能。
  7. // @description:zh-TW   [ALT+R] 將任何一個網頁中影響您閱讀的圖片，視頻，廣告等無關內容過濾，僅查看最關注的那一部分內容。特別適合各種內容閱讀型網頁。同時提供將所選區域的 HTML 代碼導出的功能。
  8.  
  9. // @authuer             Moshel
  10. // @namespace           https://hzy.pw
  11. // @homepageURL         https://gf.qytechs.cn/zh-CN/scripts/26709
  12. // @supportURL          https://github.com/h2y/link-fix
  13. // @icon                https://wiki.greasespot.net/images/f/f3/Book.png
  14. // @license             GPL-3.0
  15.  
  16. // @include             *
  17. // @grant               GM_setClipboard
  18. // *run-at              context-menu
  19. // @require             https://cdn.staticfile.org/keymaster/1.6.1/keymaster.min.js
  20. // @resource            useageIMG https://github.com/h2y/link-fix/raw/master/read_mode/useage.png
  21.  
  22. // @date                12/17/2015
  23. // @modified            01/23/2016
  24. // @version             1.1.2
  25. // ==/UserScript==
  26.  
  27.  
  28. /*
  29.     global var
  30.  */
  31. let mode = 0,        //状态标记
  32.     topNode = null,  //顶层节点
  33.     styleNode = null,
  34.     butNodes = null,
  35.     useageNode = null;
  36.  
  37.  
  38. /*
  39.     Tool functions
  40.  */
  41. function isNodeShow(node) {
  42.     const styles = window.getComputedStyle(node);
  43.  
  44.     if(styles.display=='none' || styles.visibility=='hidden')
  45.         return false;
  46.  
  47.     if(!parseInt(styles.height) || !parseInt(styles.height))
  48.         return false;
  49.  
  50.     return true;
  51. }
  52.  
  53.  
  54. /*
  55.     main functions
  56.  */
  57. function enterCliping(e) {
  58.     mode = 1;
  59.     e.preventDefault();
  60.  
  61.     //add style
  62.     if(!styleNode) {
  63.         styleNode = document.createElement('style');
  64.         styleNode.innerHTML = `.cliper-top-node {
  65.             box-shadow: 0 0 20px #777 !important;
  66.             border:     3px solid red !important;
  67.         } .read-mode-reading {
  68.             position:   fixed   !important;
  69.             z-index:    9999970 !important;
  70.             top:        0       !important;
  71.             left:       0       !important;
  72.             height:     100%    !important;
  73.             width: 		100%    !important;
  74.             background-color: white   !important;
  75.             overflow:         scroll  !important;
  76.             padding:          0       !important;
  77.             border:           0       !important;
  78.             margin:           0       !important;
  79.         } .read-mode-buts {
  80.             position:   fixed;
  81.             z-index:    9999985;
  82.             top: 2rem;  right: 1rem;
  83.         } .read-mode-button {
  84.             width:      54px;
  85.             height:     54px;
  86.             margin:     0 .5rem;
  87.             padding:    10px 15px;
  88.             color:      #fff;
  89.             opacity:    .5;
  90.             transition: 500ms;
  91.             border-radius:      5px;
  92.             background-color:   black;
  93.         } .read-mode-button:hover {
  94.             background-color:   white;
  95.             border-radius:      0;
  96.             box-shadow:         0 0 10px #000;
  97.             color:              #000;
  98.         } img.read-mode-useage {
  99.             position:   fixed;
  100.             right:      3rem;
  101.             bottom:     2rem;
  102.             z-index:    9999975;
  103.             opacity:    .7;
  104.         }`;
  105.         //styleNode.id = 'read_mode';
  106.         document.body.appendChild(styleNode);
  107.     }
  108.  
  109.     // useage image
  110.     if(!useageNode) {
  111.         useageNode = document.createElement('img');
  112.         useageNode.src = 'https://github.com/h2y/link-fix/raw/master/read_mode/useage.png';
  113.         useageNode.className = 'read-mode-useage';
  114.         document.body.appendChild(useageNode);
  115.     }
  116.  
  117.     useageNode.style.display = '';
  118.  
  119.     //choose the init node
  120.     topNode = document.body;
  121.     let preNode = null;
  122.  
  123.     do {
  124.         preNode = topNode;
  125.         onDown(e);
  126.     }while(preNode!=topNode && preNode.clientHeight*0.9 < topNode.clientHeight);
  127. }
  128.  
  129. function quitCliping(e) {
  130.     mode = 0;
  131.     e.preventDefault();
  132.  
  133.     useageNode.style.display = 'none';
  134.  
  135.     changeTopNode(null);
  136.  
  137.     if(butNodes)
  138.         butNodes.style.display = 'none';
  139.  
  140.     topNode.classList.remove('read-mode-reading');
  141. }
  142.  
  143.  
  144. function buildButNodes() {
  145.     butNodes = document.createElement('div');
  146.     butNodes.className = 'read-mode-buts';
  147.  
  148.     let buts = [
  149.         {
  150.             text:    "Exit read mode",
  151.             handler: quitCliping,
  152.             icon:    '✘'
  153.         }, {
  154.             text:    "Save HTML data",
  155.             handler: onSaveHTML,
  156.             icon:    '❖'
  157.         }
  158.     ];
  159.  
  160.     for(let but of buts) {
  161.         let newBut = document.createElement('a');
  162.         newBut.className = 'read-mode-button';
  163.         newBut.innerHTML = but.icon;
  164.         newBut.title     = but.text;
  165.         newBut.onclick   = but.handler;
  166.         butNodes.appendChild(newBut);
  167.     }
  168.  
  169.     document.body.appendChild(butNodes);
  170. }
  171.  
  172.  
  173. function changeTopNode(newNode) {
  174.     if(topNode)
  175.         topNode.classList.remove('cliper-top-node');
  176.  
  177.     if(newNode)
  178.         newNode.classList.add('cliper-top-node');
  179.     else
  180.         return;
  181.  
  182.     topNode = newNode;
  183.  
  184.     //scroll
  185.     var winH = window.screen.availHeight,
  186.         winY = window.scrollY,
  187.         domH = topNode.clientHeight,
  188.         domY = topNode.getBoundingClientRect().top + winY;
  189.     //console.log(winH,winY,domH,domY);
  190.  
  191.     if(domH>winH)
  192.         window.scrollTo(0, domY - 50 );
  193.     else
  194.         window.scrollTo(0, domY - (winH-domH)/2 );
  195. }
  196.  
  197.  
  198. /*
  199.     Event handler
  200.  */
  201. function onSaveHTML(e) {
  202.     let htmlStr = '';
  203.  
  204.     htmlStr += topNode.outerHTML.split('\n').join('')
  205.                     .replace(/(id|class)=(\'.*?\'|\".*?\")/ig, '')
  206.                     .replace(/<!--.*?-->/g, '')
  207.                     .replace(/>[\t ]+?</g, '><')
  208.                     .replace(/<(link|meta).*?>/ig, '')
  209.                     .replace(/<style.*?>.*?<\/style>/ig, '')
  210.                     .replace(/<script.*?>.*?<\/script>/ig, '');
  211.  
  212.     GM_setClipboard(htmlStr);
  213.  
  214.     alert('Copied into clipboard.');
  215. }
  216.  
  217.  
  218. function onUp(e) {
  219.     if(!mode) return;
  220.     e.preventDefault();
  221.  
  222.     if(topNode.parentElement)
  223.         changeTopNode(topNode.parentNode);
  224. }
  225.  
  226. function onDown(e) {
  227.     if(!mode) return;
  228.     e.preventDefault();
  229.  
  230.     if(!topNode.childElementCount)
  231.         return;
  232.  
  233.     var scanNodes = topNode.children,
  234.         maxNode = null;
  235.     var maxHeight = -1;
  236.  
  237.     for(let node of scanNodes)
  238.         if(isNodeShow(node) && node.clientHeight > maxHeight) {
  239.             maxHeight = node.clientHeight;
  240.             maxNode = node;
  241.         }
  242.  
  243.     if(maxNode)
  244.         changeTopNode(maxNode);
  245. }
  246.  
  247. function onLeft(e) {
  248.     if(!mode) return;
  249.     e.preventDefault();
  250.  
  251.     let nowNode = topNode;
  252.     for(let node=nowNode; node.previousElementSibling;) {
  253.         node = node.previousElementSibling;
  254.         if(isNodeShow(node)) {
  255.             nowNode = node;
  256.             break;
  257.         }
  258.     }
  259.  
  260.     if(nowNode!=topNode)
  261.         changeTopNode(nowNode);
  262.     //else: up
  263.     else if (topNode.parentNode) {
  264.         let bakNode = nowNode = topNode;
  265.  
  266.         onUp(e);
  267.         nowNode = topNode;
  268.  
  269.         onLeft(e);
  270.         if(nowNode==topNode)
  271.             changeTopNode(bakNode);
  272.         else
  273.             onDown(e);
  274.     }
  275. }
  276.  
  277. function onRight(e) {
  278.     if(!mode) return;
  279.     e.preventDefault();
  280.  
  281.     let nowNode = topNode;
  282.     for(let node=nowNode; node.nextElementSibling;) {
  283.         node = node.nextElementSibling;
  284.         if(isNodeShow(node)) {
  285.             nowNode = node;
  286.             break;
  287.         }
  288.     }
  289.  
  290.     if(nowNode!=topNode)
  291.         changeTopNode(nowNode);
  292.     //else: up
  293.     else if (topNode.parentNode) {
  294.         let bakNode = nowNode = topNode;
  295.  
  296.         onUp(e);
  297.         nowNode = topNode;
  298.  
  299.         onRight(e);
  300.         if(nowNode==topNode)
  301.             changeTopNode(bakNode);
  302.         else
  303.             onDown(e);
  304.     }
  305. }
  306.  
  307.  
  308. function onEnter(e) {
  309.     if(!mode) return;
  310.     e.preventDefault();
  311.  
  312.     quitCliping(e);
  313.  
  314.     topNode.classList.add('read-mode-reading');
  315.  
  316.     //buttons
  317.     if(butNodes)
  318.         butNodes.style.display = '';
  319.     else
  320.         buildButNodes();
  321. }
  322.  
  323.  
  324. /*
  325.     Main
  326.  */
  327. key('alt+r', function(){
  328. 	if(mode)
  329. 		quitCliping(new MouseEvent("main"));
  330. 	else
  331. 		enterCliping(new MouseEvent("main"));
  332. });
  333.  
  334.  
  335. /*
  336.     bind action
  337.  */
  338. key('up',    onUp);
  339. key('down',  onDown);
  340. key('left',  onLeft);
  341. key('right', onRight);
  342.  
  343. key('enter', onEnter);
  344. key('esc',   quitCliping);

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