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Adds a fullscreen image view option when you click on images
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// ==UserScript==
// @id gelbooru-slide
// @name Gelbooru Image Viewer
// @version 1.7
// @namespace intermission
// @author intermission
// @license WTFPL; http://www.wtfpl.net/about/
// @description Adds a fullscreen image view option when you click on images
// @include http://gelbooru.com/index.php?*
// @include https://gelbooru.com/index.php?*
// @run-at document-start
// @grant GM_registerMenuCommand
// ==/UserScript==
(function(){
"use strict";
var d = document, w = window, array = a => [].slice.call(a), observer, request, slideEl, slider, slidin, base = a => a.split("/").pop().split(".")[0].split("_").pop(), keyDown, find, current, preload, stor = localStorage, l, ns = "gelbooru-slide", toggle = stor[ns] == "true", cache, notification, pos, posEl, menu, menuEl, button, buttonEl, slideshow;
if (!stor[ns]) stor[ns] = "false";
GM_registerMenuCommand("Current image mode: " + (toggle ? "Always original size" : "Sample only"), () => {
stor[ns] = toggle ? "false" : "true";
return location.reload();
});
l = toggle ? ["ul>li>a[style*='font-weight:']", "href"] : ["#image", "src"];
current = src => d.querySelector("img.preview[src*='" + base(src || slideEl.src) + "']").parentNode;
cache = (a, b) => {
let id = a.href.match(/id=([0-9]+)/)[1], val = toggle ? "original" : "sample";
if (!b) {
let ret;
try { ret = JSON.parse(stor[ns + id])[val] } catch(e) {}
return ret || "loading";
} else {
let obj, temp;
try { temp = JSON.parse(stor[ns + id]) } catch(e) {}
obj = temp || {};
obj[val] = b;
stor[ns + id] = JSON.stringify(obj);
return b;
}
};
pos = a => {
if (typeof a === "boolean") {
let no = posEl.firstElementChild;
if (a) no.innerHTML = Number(no.innerHTML) + 1;
else no.innerHTML = Number(no.innerHTML) - 1;
} else {
if (slideEl && !posEl) {
let thumbs = array(d.querySelectorAll`span.thumb a[data-full]`);
posEl = d.createElement`div`;
posEl.insertAdjacentHTML("beforeend", "<span>" + (thumbs.indexOf(current()) + 1) + "</span> / " + thumbs.length);
posEl.setAttribute("style", "position: fixed; bottom: 20px; left: 0; display: block; pointer-events: none;");
slideEl.insertAdjacentElement("afterend", posEl);
} else if (posEl) posEl = posEl.remove();
} return;
};
find = function(el, method) {
var a;
el = el.parentNode;
do {
try {
el = el[(method ? "next" : "previous") + "ElementSibling"];
a = el.querySelector`a[data-full]`;
} catch(err) {
return false;
}
if (a) break;
a = false;
} while(!a);
return a;
};
menu = e => {
let _l = e.clientX + 1, _t = e.clientY + 1,
left = (_l > w.innerWidth - 139 ? (_l - 139) : _l) + "px",
top = (_t > w.innerHeight - 48 ? (_t - 48) : _t) + "px";
if (menuEl) {
menuEl.removeAttribute("class");
menuEl.style.left = left;
menuEl.style.top = top;
setTimeout(() => menuEl.classList.add("menuel"), 10);
} else {
let href = current().href;
menuEl = d.createElement("div");
menuEl.id = "menuel";
menuEl.insertAdjacentHTML("beforeend", '<a href="'+href+'" style="margin-bottom: 2px">Open in This Tab</a><a href="'+href+'" target="_blank">Open in New Tab</a>');
menuEl.style.left = left;
menuEl.style.top = top;
d.body.appendChild(menuEl);
menuEl.classList.add("menuel");
} return;
};
preload = function() {
var curr = current();
request(find(curr, true));
return request(find(curr, false));
};
keyDown = function(e) {
var move;
if (slideshow) return;
switch(e.keyCode) {
case 32: case 39:
move = true;
break;
case 37:
move = false;
break;
case 38:
if (e.event) menu(e.event);
else w.location = current().href;
return;
case 40:
e.preventDefault();
return slideEl.click();
}
if (typeof move != "undefined") {
e = find(current(), move);
if (e) {
slideEl.slide(e.firstElementChild.src);
pos(move);
preload();
} else if (!notification) {
notification = d.createElement`div`;
notification.classList.add`nomoreimages`;
notification.setAttribute("style", "pointer-events: none; background: linear-gradient(to " + (move ? "right" : "left") + ", transparent, rgba(255,0,0,.5));" + (move ? "right" : "left") + ": 0;");
d.body.insertBefore(notification, d.body.lastElementChild);
}
} return;
};
button = () => {
let clear = () => clearTimeout(Number(buttonEl.dataset.timer) || 0);
if (buttonEl) {
clear();
buttonEl = buttonEl.remove();
} else {
let svg_state = true, svg_play = `
<svg width="50" height="50" version="1.1" xmlns="http://www.w3.org/2000/svg">
<rect rx="5" height="48" width="48" y="1" x="1" fill="#fff" />
<polygon fill="#000" points="16 12 16 38 36 25" />
</svg></span>`, svg_pause = `
<span><svg width="50" height="50" xmlns="http://www.w3.org/2000/svg">
<rect fill="#fff" x="1" y="1" width="48" height="48" rx="5" />
<rect fill="#000" x="12" y="12" width="10" height="26" />
<rect fill="#000" x="28" y="12" width="10" height="26" />
</svg>`, fn = function() {
let options = array(buttonEl.querySelectorAll("div input")).map(a =>
a.type == "number" ? (a.value >= 5 ? a.value : 5) * 1E3 : a.checked
), _fnS = () => {
slideEl.removeEventListener("load", _fnS);
buttonEl.dataset.timer = setTimeout(_fnT, options[2]);
}, _fnT = () => {
let el, thumbs;
if (options[1]) {
thumbs = array(d.querySelectorAll("span.thumb a[data-full]"));
thumbs.splice(thumbs.indexOf(current()), 1);
el = thumbs[Math.random() * thumbs.length >> 0];
} else el = find(current(), true);
if (!el && options[0]) el = d.querySelector("span.thumb a[data-full]");
if (!el) return fn();
slideEl.addEventListener("load", _fnS);
slideEl.slide(el.firstElementChild.src);
preload();
};
slideshow = !!svg_state;
pos();
buttonEl.firstElementChild.innerHTML = (svg_state = !svg_state) ? svg_play : svg_pause;
if (slideshow) {
buttonEl.dataset.timer = setTimeout(_fnT, options[2]);
buttonEl.style.opacity = ".4";
} else {
clear();
buttonEl.style.opacity = ".7";
buttonEl.removeAttribute("data-timer");
}
return;
};
buttonEl = d.createElement("div");
buttonEl.setAttribute("style", 'opacity: .7;');
buttonEl.className = "slideshow";
buttonEl.insertAdjacentHTML('beforeend', '<span title="Slideshow">' + svg_play + "</span>" + `
<div style="display: none;padding: 10px 0">Options<hr>
<label>Loop: <input type="checkbox" checked></label> <label>Shuffle: <input type="checkbox"></label>
<br>Interval: <input type="number" value="5" style="width: 100px">
</div>`);
buttonEl.firstElementChild.onclick = fn;
d.body.appendChild(buttonEl);
}
};
slider = function(a) {
d.dispatchEvent(new CustomEvent(ns, {bubbles:true}));
if (slidin) {
let center;
slideshow = slidin = !(a = current());
slideEl = slideEl.remove();
button(); pos();
d.body.classList.remove`sliding`;
a.classList.add`outlined`;
d.removeEventListener("keydown", keyDown);
center = a.offsetTop + a.offsetHeight / 2 - w.innerHeight / 2;
w.scrollTo(0, center < 0 ? 0 : center);
} else {
let fn = function(src) {
var data, load = () => {
this.removeAttribute("src");
this.setAttribute("src", data);
this.removeEventListener("load", load);
};
if (!slideshow) this.src = src;
data = current(src).dataset.full;
if (data == "loading") request(current(src));
else {
if (/\.gif(?:\?\d+)?$/.test(data))
this.addEventListener("load", load);
this.src = data;
}
};
slidin = true;
d.body.classList.add`sliding`;
array(d.querySelectorAll`span>a.outlined`).map(a => a.classList.remove`outlined`);
slideEl = d.createElement`img`;
slideEl.id = "slide";
slideEl.alt = "Loading...";
Object.defineProperty(slideEl, "slide", { value: fn });
slideEl.onclick = slider;
slideEl.onmouseup = e => e.button === 1 && keyDown({keyCode:38, event:e});
d.body.appendChild(slideEl);
slideEl.slide(a.firstElementChild.src);
d.addEventListener("keydown", keyDown);
pos(); button(); preload();
} return;
};
request = function(node) {
if (!node || node.dataset.alreadyLoading || node.dataset.full != "loading") return;
node.dataset.alreadyLoading = "true";
return fetch(node.href)
.then(x => x.text().then(text => {
let doc = (new DOMParser()).parseFromString(text, "text/html"), img, _base;
if (img = doc.querySelector(l[0])) {
_base = base(img[l[1]]);
node.dataset.full = cache(node, img[l[1]]);
if (slideEl) {
if (slideEl.src.indexOf(_base) > -1) slideEl.slide(img[l[1]]);
else if (slideshow) slideEl.src = img[l[1]];
}
return;
} else {
node.removeAttribute`data-already-loading`;
fetch`/intermission.php`.then(() => request(node));
throw undefined;
}
})).catch(err => {
if (typeof err == "undefined") return;
console.error("Failed HTTP request\nDo you have an internet connection?\n", err);
return node.removeAttribute`data-already-loading`;
});
};
observer = new MutationObserver(function(mutations) {
function process(node) {
var a;
try {
if (node.matches`span.thumb[id^='s']` && (a = node.firstElementChild) && !a.dataset.full) {
if (node.querySelector`img[alt*='webm']`) return;
a.dataset.full = cache(a);
a.onclick = e => e.button === 0 && (e.preventDefault(), e.stopPropagation(), slider(e.target.parentNode));
}
} catch(e) {} return;
}
return mutations.forEach(mutation => array(mutation.addedNodes).forEach(process));
});
observer.observe(d, {
childList: true,
subtree: true
});
d.addEventListener("animationend", e => {
if (e.animationName == "Outlined") e.target.classList.remove`outlined`;
else if (e.animationName == "nomoreimages") notification = e.target.remove();
else if (e.animationName == "menuelement") menuEl = e.target.remove();
});
w.addEventListener("keypress", e => {
if (e.key === "Enter" || e.keyCode === 13) {
if (e.target.matches`span.thumb>a[data-full]`) {
e.preventDefault();
slider(e.target);
}
if (slideshow) {
buttonEl.firstElementChild.click();
}
}
});
w.addEventListener("wheel", e => slidin && keyDown({keyCode: e.deltaY > 0 ? 39 : e.deltaY < 0 ? 37 : 0}));
if (stor[ns + "-firstrun"] != "1.5.3") {
(function(l){
var a;
for (a in l)
if (/^gelbooru-slide./.test(a)) l.removeItem(a);
}(stor));
stor[ns + "-firstrun"] = "1.5.3";
}
{
let css = d.createElement`style`;
css.textContent = `
@keyframes Outlined {
0% { outline: 6px solid orange }
60% { outline: 6px solid orange }
100% { outline: 6px solid transparent }
}
@keyframes nomoreimages {
0% { opacity: 0 }
20% { opacity: 1 }
100% { opacity: 0 }
}
@keyframes menuelement {
0% { opacity: 1 }
80% { opacity: 1 }
100% { opacity: 0 }
}
body.sliding > *:not(#slide) {
display: none
}
#slide {
width: 100vw;
height: 100vh;
object-fit: contain
}
.outlined {
outline: 6px solid transparent;
animation-duration: 4s;
animation-name: Outlined
}
.nomoreimages {
display: block ! important;
width: 33vw;
height: 100vh;
top: 0;
position: fixed;
animation-duration: 1s;
animation-name: nomoreimages
}
span.thumb {
max-width: 180px;
max-height: 180px;
}
#menuel {
opacity: 1;
position: fixed;
display: block ! important;
padding: 2px;
background: black;
width: 139px;
height: 44px;
animation-duration: 1s
}
.menuel {
animation-name: menuelement
}
#menuel:hover {
animation-name: keepalive
}
#menuel a {
background: #fff;
display: block
}
.slideshow {
display: block ! important;
position: fixed;
bottom: 20px;
right: 20px
}
.slideshow:hover:not([data-timer]) > div {
background: white;
color: black;
position: fixed;
display: block ! important;
bottom: 70px;
right: 20px
}`;
return d.head.appendChild(css);
}
}())