67 lines
2.1 KiB
JavaScript
67 lines
2.1 KiB
JavaScript
"use strict";
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// function setScrollAmount() {
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// (document.documentElement || document.body).style.setProperty("--scrollLengthPx", body.scrollTop);
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// }
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// setScrollAmount();
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// document.addEventListener("scroll", setScrollAmount);
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// document.addEventListener("resize", setScrollAmount);
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/** @param {Event} evt */
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function addEffect({ target }) {
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const effectsLayer = document.querySelector("#effects");
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if (
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target == null ||
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!target["matches"] ||
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!target.matches(
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"a[href],.nav-toggle-button,button,input[type='radio']",
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)
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) {
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return;
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}
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const rects = Array.from(target.getClientRects());
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Array.from(target.children).forEach((child) => {
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rects.push(...Array.from(child.getClientRects()));
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});
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rects.forEach((rect) => {
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const { top, left, width, height } = rect;
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const newEffect = document.createElement("div");
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newEffect.__effectParent = target;
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newEffect.classList.add("effect-instance");
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const padding = "10rem";
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newEffect.style.top = `calc(${top + window.scrollY}px - ${padding})`;
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newEffect.style.left = `calc(${left + window.scrollX}px - ${padding})`;
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newEffect.style.width = `calc(${width}px + 2 * ${padding})`;
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newEffect.style.height = `calc(${height}px + 2 * ${padding})`;
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effectsLayer.appendChild(newEffect);
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});
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}
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document.addEventListener("mouseenter", addEffect, true);
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document.addEventListener("focus", addEffect, true);
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/** @param {Event} evt */
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function removeEffect({target}) {
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const effectsLayer = document.querySelector("#effects");
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const effects = Array.from(effectsLayer.children).filter(
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(e) => e.__effectParent === target,
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);
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effects.forEach(e => {
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e.getAnimations().forEach(anim => {
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if (anim.currentTime < 100) {
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anim.pause();
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effectsLayer.removeChild(e);
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return;
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}
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anim.pause();
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anim.updatePlaybackRate(-0.25);
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anim.play();
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anim.addEventListener('finish', () => {
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if (effectsLayer.contains(e)) {
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effectsLayer.removeChild(e);
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}
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});
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});
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})
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};
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document.addEventListener('mouseleave', removeEffect, true);
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document.addEventListener('blur', removeEffect, true);
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