Adds inline image expansion to 4chan archives.
// ==UserScript==
// @name 4chan Archive Image Expander
// @description Adds inline image expansion to 4chan archives.
// @author Hen-Tie
// @homepage http://hen-tie.tumblr.com/
// @namespace https://greasyfork.org/en/users/8336
// @include /https?:\/\/(desuarchive\.org|archived\.moe)\/.*\/thread\/.*/
// @include /https?:\/\/thebarchive\.com\/(b|bant|talk)\/.*/
// @include /https?:\/\/archive\.4plebs\.org\/.*/
// @grant none
// @require https://ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js
// @require https://greasyfork.org/scripts/39415-jquery-initialize/code/jQuery%20Initialize.js?version=258071
// @icon https://i.imgur.com/80UFdoW.png
// @version 1.9
// ==/UserScript==
var jq = jQuery.noConflict(true);
(function ($) {
//index all images for modal gallery
var fullImage = [];
var thumbnail = [];
var galleryActivated = 0;
$("body").append('<modal id="aie"><div id="aie-img-controls">Image Size: <a id="aie-img-native" href="javascript:;">Native</a> | <a id="aie-img-fill" href="javascript:;">Fill</a> | <a id="aie-img-fit" href="javascript:;">Fit</a></div></modal>');
//gallery mode keypress listener
$("body").on("keydown", function(e) {
//g to open
if (e.which == 71) {
if (galleryActivated) {
$('modal').show();
} else {
$('modal').show();
$('a.thread_image_link').each(function() {
fullImage.push('<img src="' + $(this).attr('href') + '" />');
thumbnail.push('<img src="' + $(this).children('img').attr('src') + '" />');
});
$.each(fullImage, function(i) {
$("modal").append(fullImage[i]);
});
galleryActivated = 1;
}
}
//esc to close
if (e.which == 27) {
$('modal').hide();
}
});
//gallery image contorls
$('#aie-img-native').click(function() {
//$('modal img').each(function() {
// $(this).css({'width':'auto','max-width':'unset'});
//});
imgFit(this);
});
function imgFit(x) {
console.log(x);
}
$('#aie-img-fill').click(function() {
$('modal img').each(function() {
$(this).css({'width':'100%','max-width':'unset'});
});
});
$('#aie-img-fit').click(function() {
$('modal img').each(function() {
$(this).css({'width':'unset','max-width':'100%'});
});
});
//catches image load event
$.initialize('.init', function() {
$(this).parent().removeClass('spinner');
});
//insert download image links
$('.post_file_filename').each(function() {
$(this).attr('download',true);
});
$('<style type="text/css">.spinner:before{content:"";box-sizing:border-box;position:absolute;top:50%;left:50%;width:20px;height:20px;margin-top:-10px;margin-left:-10px;border-radius:50%;border-top:2px solid #CCC;border-right:2px solid transparent;animation:spinner 0.6s linear infinite}@keyframes spinner{to{transform:rotate(360deg)}}</style>').appendTo('head');
$('<style type="text/css">#aie-img-controls{width:100%;background:#282a2e;padding:0 1em;line-height:2;position:fixed;}modal img{display:block;margin-top:2em;}modal{display:none;position:fixed;top:0;left:0;overflow:auto;width:100%;height:100%;background:#1d1f21;}</style>').appendTo("head");
//video settings
var vidAttr = 'loop autoplay controls';
var imgCSS = {
'max-width': '100%',
'height': 'auto'
};
var webmCSS = {
'max-width': '100%',
'height': 'auto'
};
//indicate webm thumbnail
$('.post_file_filename[href$=".webm"]').parent().next().find('.post_image').css('border', '3px solid #5f89ac');
//prevent weird wrapping around expanded images
$('.theme_default .post header').css('display', 'inline-block');
$('.thread_image_box a').on('click', function (e) {
var myHref = $(this).attr('href');
var myHeight = $(this).children('img').outerHeight();
var myWidth = $(this).children('img').outerWidth();
$(this).parent().addClass('spinner').css({
'min-height': myHeight,
'min-width': myWidth,
'position': 'relative'
});
//new elements containing full size href as src
var img = $('<img />').attr({
'src': myHref,
'class': 'openItem'
}).css(imgCSS).load(function(){
$(this).addClass('init');
});
var webm = $('<video style="background-color: #222;" poster="data:image/gif,AAAA" ' + vidAttr + ' id="vid"><source type="video/webm" src="' + myHref + '"/></video>').attr('class', 'openItem').css(webmCSS);
//check filetype, hide thumbnail, insert full size file
if (myHref.match(/.gif$|.png$|.jpg$/g)) {
e.preventDefault();
$(this).fadeTo('fast', 0, function () {
$(this).hide();
$(this).after(img);
});
} else if (myHref.match(/.webm$/g)) {
e.preventDefault();
$(this).hide();
$(this).after(webm);
var vid = document.getElementById("vid");
//video proven to be loadable, cancel spinner
vid.ondurationchange = function() {
$(this).parent().removeClass('spinner');
};
} else {
console.log('"4chan Archive Image Expander"\nUnsupported filetype, please report.\nSee @homepage or @namespace for contact info.');
}
//if src is broken insert placeholder, stop infinite spinner
setTimeout(function(){
var checkBroken = $('.openItem');
if (checkBroken.width() === 16 && checkBroken.height() === 16) {
checkBroken.addClass('init').attr('src','http://via.placeholder.com/'+myWidth + 'x' + myHeight+'/1d1f21/888888?text=ERR.');
console.log('broken image');
} else if (checkBroken.is('video')) {
//if readyState has no metadata
if (vid.readyState === 0) {
checkBroken.addClass('init');
console.log('broken video');
}
} else {
return false;
}
}, 3000);
});
//on reclick, remove full size, show thumbnail again
$(document).on('click', '.openItem', function () {
//video not loaded or timed out, remove spinner on close
if ($(this).is('video')) {
$(this).parent('.spinner').removeClass('spinner');
}
$(this).prev().show().fadeTo(0, 1);
$(this).remove();
});
}(jq));