f0ckv2/public/s/js/f0ck.js

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JavaScript
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(() => {
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let video;
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if(elem = document.querySelector("#my-video")) {
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video = new v0ck(elem);
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document.addEventListener("keydown", e => {
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if(e.key === " " && e.target.tagName !== "INPUT") {
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video[video.paused ? 'play' : 'pause']();
document.querySelector('.v0ck_overlay').classList[video.paused ? 'remove' : 'add']('v0ck_hidden');
}
});
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}
let tt = false;
const stimeout = 500;
const changePage = (e, pbwork = true) => {
pbwork && document.querySelector("nav.navbar").classList.add("pbwork");
!tt && (tt = setTimeout(() => e.click(), stimeout));
};
// <keybindings>
const clickOnElementBinding = selector => () => (elem = document.querySelector(selector)) ? elem.click() : null;
const keybindings = {
"ArrowLeft": clickOnElementBinding("#next"),
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"a": clickOnElementBinding("#next"),
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"ArrowRight": clickOnElementBinding("#prev"),
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"d": clickOnElementBinding("#prev"),
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"r": clickOnElementBinding("#random")
};
document.addEventListener("keydown", e => {
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if(e.key in keybindings && e.target.tagName !== "INPUT") {
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e.preventDefault();
keybindings[e.key]();
}
});
// </keybindings>
// <image-responsive>
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const imgSize = e => new Promise((res, _) => {
const i = new Image();
i.addEventListener('load', function() {
res({ width: this.width, height: this.height });
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});
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i.src = e.src;
});
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if(f0ckimage = document.querySelector("img#f0ck-image")) {
const f0ckimagescroll = document.querySelector("#image-scroll");
f0ckimage.addEventListener("click", async e => {
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e.preventDefault();
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const img = await imgSize(f0ckimage);
if(img.width > img.height)
return;
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f0ckimagescroll.hasAttribute("style")
? f0ckimagescroll.removeAttribute("style")
: f0ckimagescroll.setAttribute("style", "overflow-y: scroll");
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f0ckimage.hasAttribute("style")
? f0ckimage.removeAttribute("style")
: f0ckimage.setAttribute("style", "max-height: none; height: auto; width: 100%; position: absolute; left: 0;");
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});
}
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// </image-responsive>
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// <scroller>
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let tts = 0;
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if(document.querySelector("div#posts")) {
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document.addEventListener("wheel", e => {
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if((window.innerHeight + window.scrollY) >= document.body.offsetHeight && e.deltaY > 0) { // down
if(elem = document.querySelector(".pagination > .next:not(.disabled)")) {
if(tts < 2) {
document.querySelector("div#footbar").style.backgroundColor = "var(--scroller-bg)";
tts++;
}
else
changePage(elem);
}
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}
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else if(window.scrollY <= 0 && e.deltaY < 0) { // up
if(elem = document.querySelector(".pagination > .prev:not(.disabled)")) {
if(tts < 2) {
document.querySelector("nav.navbar").style.backgroundColor = "var(--scroller-bg)";
tts++;
}
else
changePage(elem);
}
}
else {
document.querySelector("div#footbar").style.backgroundColor = "var(--nav-bg)";
document.querySelector("nav.navbar").style.backgroundColor = "var(--nav-bg)";
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}
});
}
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const rmatch = /\/p\/(\d+?)/;
if(document.referrer.match(rmatch) && document.location.href.match(rmatch))
if(document.location.href.match(rmatch) < document.referrer.match(rmatch))
document.body.scrollTop = document.body.scrollHeight;
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// </scroller>
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// <swipe>
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const swipeRT = {
xDown: null,
yDown: null,
xDiff: null,
yDiff: null,
timeDown: null,
startEl: null
};
const swipeOpt = {
treshold: 20, // 20px
timeout: 500 // 500ms
};
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document.addEventListener('touchstart', e => {
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swipeRT.startEl = e.target;
swipeRT.timeDown = Date.now();
swipeRT.xDown = e.touches[0].clientX;
swipeRT.yDown = e.touches[0].clientY;
swipeRT.xDiff = 0;
swipeRT.yDiff = 0;
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}, false);
document.addEventListener('touchmove', e => {
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if(!swipeRT.xDown || !swipeRT.yDown)
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return;
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swipeRT.xDiff = swipeRT.xDown - e.touches[0].clientX;
swipeRT.yDiff = swipeRT.yDown - e.touches[0].clientY;
}, false);
document.addEventListener('touchend', e => {
if(swipeRT.startEl !== e.target)
return;
const timeDiff = Date.now() - swipeRT.timeDown;
let elem;
if(Math.abs(swipeRT.xDiff) > Math.abs(swipeRT.yDiff)) {
if(Math.abs(swipeRT.xDiff) > swipeOpt.treshold && timeDiff < swipeOpt.timeout) {
if(swipeRT.xDiff > 0) // left
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elem = document.querySelector(".pagination > .next:not(.disabled)");
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else // right
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elem = document.querySelector(".pagination > .prev:not(.disabled)");
}
}
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else {
if(Math.abs(swipeRT.yDiff) > swipeOpt.treshold && timeDiff < swipeOpt.timeout) {
if(navbar = document.querySelector("nav.navbar") && document.querySelector("div#posts")) {
if(swipeRT.yDiff > 0 && (window.innerHeight + window.scrollY) >= document.body.offsetHeight) // up
elem = document.querySelector(".pagination > .next:not(.disabled)");
else if(swipeRT.yDiff <= 0 && window.scrollY <= 0 && document.querySelector("div#posts")) // down
elem = document.querySelector(".pagination > .prev:not(.disabled)");
}
}
}
swipeRT.xDown = null;
swipeRT.yDown = null;
swipeRT.timeDown = null;
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if(elem)
changePage(elem);
}, false);
// </swipe>
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// <visualizer>
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if(audioElement = document.querySelector("audio")) {
const canvas = document.createElement("canvas");
const ctx = canvas.getContext("2d");
canvas.width = 1920;
canvas.height = 1080;
setTimeout(() => {
document.querySelector(".v0ck").insertAdjacentElement("afterbegin", canvas);
}, 400);
const audioCtx = new AudioContext();
const analyser = audioCtx.createAnalyser();
analyser.fftSize = 2048;
const source = audioCtx.createMediaElementSource(audioElement);
source.connect(analyser);
source.connect(audioCtx.destination);
let data = new Uint8Array(analyser.frequencyBinCount);
requestAnimationFrame(loopingFunction);
function loopingFunction() {
requestAnimationFrame(loopingFunction);
analyser.getByteFrequencyData(data);
draw(data);
}
function draw(data) {
data = [ ...data ];
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.fillStyle = getComputedStyle(document.body).getPropertyValue("--accent");
data.forEach((value, i) => {
const percent = value / 256;
const height = (canvas.height * percent / 2) - 40;
const offset = canvas.height - height - 1;
const barWidth = canvas.width / analyser.frequencyBinCount;
ctx.fillRect(i * barWidth, offset, barWidth, height);
});
}
audioElement.onplay = () => {
audioCtx.resume();
};
}
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// </visualizer>
// <mediakeys>
if(elem = document.querySelector("#my-video") && "mediaSession" in navigator) {
const playpauseEvent = () => {
video[video.paused ? 'play' : 'pause']();
document.querySelector('.v0ck_overlay').classList[video.paused ? 'remove' : 'add']('v0ck_hidden');
};
navigator.mediaSession.setActionHandler('play', playpauseEvent);
navigator.mediaSession.setActionHandler('pause', playpauseEvent);
navigator.mediaSession.setActionHandler('stop', playpauseEvent);
navigator.mediaSession.setActionHandler('previoustrack', () => {
if(link = document.querySelector(".pagination > .prev:not(.disabled)"))
changePage(link);
});
navigator.mediaSession.setActionHandler('nexttrack', () => {
if(link = document.querySelector(".pagination > .next:not(.disabled)"))
changePage(link);
});
}
// </mediakeys>
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})();