Enlarges pictures when you roll over them
当前为
// ==UserScript==
// @name Facebookenlarge
// @namespace http://userscripts.org/users/23652
// @description Enlarges pictures when you roll over them
// @include http://*.facebook.com/*
// @include https://*.facebook.com/*
// @include http://facebook.com/*
// @include https://facebook.com/*
// @copyright JoeSimmons
// @version 1.0.6
// @license GPL version 3 or any later version; http://www.gnu.org/copyleft/gpl.html
// @require https://greasyfork.org/scripts/1885-joesimmons-library/code/JoeSimmons'%20Library.js?version=4838
// @require https://greasyfork.org/scripts/2817-jsl-ajax-plugin/code/JSL%20-%20AJAX%20plugin.js?version=7911
// @grant GM_xmlHttpRequest
// ==/UserScript==
/* CHANGELOG ////////////////////////////////////////
1.0.6 (7/1/2014)
- fixed feature to not show enlarged thumbnail in fullscreen view or on album image hover
- fixed another small error with displaying some images
1.0.58 (6/26/2014)
- fixed an error with displaying some images (removed "v/t1.0-1/" out of url)
- made it not show a popup when the popup url is the same as the hovered url
this prevents a popup when hovering over a photo in full screen viewing mode
- added a small system to check if the enlarged url exists - if not, the user will
be shown the thumbnail in the popup (no enlargement because it's not possible)
instead of a small, empty, black box
1.0.57 (4/6/2014)
- fixed a problem with banners (on shared pages boxes) unable to be enlarged
1.0.56 (3/28/2014)
- fixed a problem with hovering over the "Photos" thumbnail on a page
- fixed a problem with some thumbnails on the "About" page
1.0.55 (3/22/2014)
- fixed an issue where hovering over someone's cover photo wouldn't show it
1.0.54 (3/20/2014)
- allowed enlarging of the banner picture above "Like Page" button
- adapted to the newest JSL
1.0.53 (9/13/2013)
- added more image compatibility
1.0.52 (9/12/2013)
- updated the 'ispic' RegExp
1.0.51
- fixed the 'ispic' RegExp. some pics weren't getting matched
1.0.50
- fixed a bug wherein the preview wouldn't always display in the correct corner
- fixed a bug wherein some pictures would display incorrectly
- updated HQ pic getting methods so that it shows the biggest picture possible (without ajax)
- added a method so that the preview would never overlap the mouse cursor
- now middle & right clicking don't hide the preview, only left-clicking
1.0.49
- fixed a regexp bug that would cause some pictures to not show
- added an anonymous function wrapper
- updated GM_addStyle check/function
*/ //////////////////////////////////////////////////
// By: Ian Williams and edited for Facebook by JoeSimmons
(function () { // anonymous function wrapper
'use strict';
var delay = 400,
coords = {
'x' : 0,
'y' : 0
},
size = /([\d_]{5,})([_\/])[qstna]([_\.])?/i,
ispic = /https?:\/\/((fbcdn-)?(profile|s?(photos|content)-\w|s(photos|content))((-\w+)+)?(\.ak|\.xx)?\.(fbcdn|akamaihd))\.net\/(.*\/)+.*([_\/][qstna]([\._])?)?.*(jpe?g|[tg]iff?|bmp|png)([?&][a-z]+=[a-zA-Z0-9]+)*/i,
rFbexternal = /&(cfs|upscale)(=[^&]+)?/g,
XbyX = /(v\/t[^\/]+\/)?(\w(\d+\.)+\d+\/)?\w\d{2,4}x\d{2,4}\//,
c = /\w(\d+\.)+\d+\//,
app = /www\/app_full_proxy\.php/,
show_d, // timeout holder
docFrag = document.createDocumentFragment();
function primeThumbs() {
JSL('//a[@data-hovercard]/img/..').removeAttribute('data-hovercard');
}
// record mouse movement for positioning the preview images
function handleMove(event) {
coords.x = event.pageX - pageXOffset;
coords.y = event.pageY - pageYOffset;
event.stopPropagation();
}
function show(src) {
var pop = JSL('#picPop'),
x = coords.x,
y = coords.y,
isTop = y < (window.innerHeight / 2), // is mouse at top?
isLeft = x < ( (window.innerWidth - 15 /* 15 is the scrollbar width, approx. */) / 2), // is mouse at left?
maxWidth = (isLeft ? (window.innerWidth - x) : x) - 25, // keep the image at least 25px away from the cursor
vert, hori;
// make sure the preview doesn't show beyond the browser dimensions or overlap the mouse cursor
// this alone only limits the max-width, but coupled with the 4-corner system, it works
pop.css('max-width', maxWidth + 'px');
// set the preview's source url
pop.attribute('src', src);
// determine where the preview should display according to hovered image's position
// ideally, as far away from the hovered image as possible
vert = isTop ? 'bottom' : 'top'; // should the preview be on the top or bottom?
hori = isLeft ? 'right' : 'left'; // should the preview be on the left or right?
// reset the position of the hover box
pop.css('top', 'auto').css('right', 'auto').css('bottom', 'auto').css('left', 'auto');
// set the corner it will appear in
pop.css(vert, '0').css(hori, '0');
// show the preview
pop.show('block');
}
function handleMouseover(event) {
var t = event.target,
tag = t.tagName.toLowerCase(),
style = t.getAttribute('style'),
_class = t.className,
src = style && style.match(ispic) ? t.getAttribute('style') : unescape(t.src),
imgExist = JSL('./img | ./i | ./div/img | ./span/img', t),
odd = JSL('./../img | ./../i | ./../../div[@class="detail"]/i[@class="photo" and contains(@style, "background-image")]', t),
ohoe = JSL('./ancestor::a[( contains(@href, "oh=") and contains(@href, "oe=") ) or ( contains(@href, "oh%3D") and contains(@href, "oe%3D") )]', t),
snowlift = JSL('#photos_snowlift'),
goThroughWithShow, hqImg;
// checks if enlarged thumbnail's url exists before showing it
function checkSource(res) {
// there's a problem with it returning a status of 0, so we'll count that
// as valid as well as 200, because sometimes it displays fine, despite returning 0
if (res.status !== 200 && res.status !== 0) {
// if the enlarged thumbnail url has a problem, show the original thumbnail instead
hidePicPop();
show_d = window.setTimeout(show, 200, this);
new Image().src = this;
} else {
// if the enlarged thumbnail url is fine, just pre-load it
new Image().src = res.url;
}
}
// sometimes the hovered element can be a parent element of the actual thumbnail element
if (imgExist.exists) {
t = imgExist[0];
src = unescape(t.src);
tag = t.tagName.toLowerCase();
if ( src.indexOf('fbexternal') !== -1 && src.match(ispic) ) {
src = src.match(ispic)[0].replace(rFbexternal, '');
}
}
if (ohoe.exists) {
src = decodeURIComponent( ohoe.attribute('href') ).split('&src=')[1].split('&smallsrc=')[0];
}
// support for elements that when hovered over, aren't the image itself
// or it's an element where it displays the image by css' background-image
if ( tag === 'div' && (['coverBorder', 'mat'].indexOf(_class) !== -1) ) {
if (odd.exists) {
t = odd[0];
tag = t.tagName.toLowerCase();
style = t.getAttribute('style');
if (tag === 'i' && typeof style === 'string' && style.indexOf('background-image') !== -1) {
src = style.match(ispic)[0];
} else {
src = unescape(t.src);
}
}
}
if ( ['img', 'i'].indexOf(tag) !== -1 && src.match(ispic) ) {
if ( tag === 'img' && src.match(app) ) {
src = src.match(ispic)[0];
}
hqImg = ohoe.exists ? src.replace(XbyX, '') : hq(t, tag, src);
goThroughWithShow = true;
} else if ( tag === 'div' && t.className == 'UIMediaItem_PhotoFrame' && t.parentNode.parentNode.parentNode.getAttribute('style').match(ispic) ) {
hqImg = hq(t, tag);
goThroughWithShow = true;
}
// make sure we don't show enlarged thumbnails for album or fullscreen view images
if (t.className.indexOf('spotlight') !== -1 || JSL(t).parent('#imagestage').exists) {
goThroughWithShow = false;
}
// if we chose to show the image, let's go through that process
if (goThroughWithShow === true) {
// show the image if it's indeed a facebook thumbnail
// and the enlarged url is not the same as the thumbnail url
show_d = window.setTimeout(show, delay, hqImg);
// let's send a quick request to see if this is a valid image
// if not, we just show the original thumbnail
JSL.ajax(hqImg, {
context : src,
method : 'HEAD',
onload : checkSource,
onerror : checkSource
});
}
event.stopPropagation();
}
function hidePicPop(event) {
var picPop = JSL('#picPop');
// don't hide the enlarged picture if a middle or right click happens
if (typeof event !== 'undefined' && typeof event.which === 'number' && event.which > 1) { return; }
window.clearTimeout(show_d);
picPop.hide();
picPop.removeAttribute('src');
if (typeof event !== 'undefined') {
event.stopPropagation();
}
}
function hq(e, tag, src) {
var r = '', style = e.getAttribute('style');
switch (tag) {
case 'div': {
r = e.parentNode.parentNode.parentNode.getAttribute('style').match(ispic)[0];
break;
}
case 'img': case 'i': {
if ( typeof style === 'string' && style.match(ispic) ) {
r = style.match(ispic)[0];
} else if (typeof src === 'string') {
r = src;
} else {
r = e.src;
}
break;
}
}
return r.replace(XbyX, '').replace(c, '').replace(size, '$1$2n$3');
}
function info(i) {
var info = JSL('#infoBox');
i = (i + '').replace(/[\n\r]/g, '\n<br />\n');
info.show('block').prop('innerHTML', i);
}
// Make sure the page is not in a frame
if (window.self !== window.top) { return; }
JSL.addStyle('' +
'#picPop { ' +
'z-index: 99999; ' +
'position: fixed; ' +
'background: #000000; '+
'overflow: hidden; ' +
'border: 2px solid #000000; ' +
'outline: 2px solid #FFFFFF; ' +
'max-height: 98%; ' +
'}\n\n' +
'.HovercardOverlay, ._5uek, ._7m4, ._8xh, #fbProfileCover .coverBorder { ' +
'display: none !important; ' +
'}' +
'');
// add the info box
docFrag.appendChild( JSL.create('span', {id: 'infoBox', style: 'border: 1px solid #666666; border-radius: 6px; position: fixed; top: 4px; left: 45%; font-size: 10pt; font-family: sans-serif, arial; background: #EEEEEE; color: #000000; padding: 10px; z-index: 999999; overflow: auto; display: none;'}) );
// add the hovering bigger image holder
docFrag.appendChild( JSL.create('img', {id: 'picPop', style: 'display: none;', 'class':'hover_img_thumb'}) );
document.body.appendChild(docFrag);
// keep tabs on where the mouse is so we never problems with the positioning of the preview
window.addEventListener('mousemove', handleMove, false);
// hover over a thumbnail
window.addEventListener('mouseover', handleMouseover, false);
// hide the preview when moving the mouse off a thumbnail
window.addEventListener('mouseout', hidePicPop, false);
// hide the preview when left-clicking
window.addEventListener('click', hidePicPop, false);
primeThumbs();
JSL.setInterval(primeThumbs, 1000);
}());