joshua.seigler.net/assets/scripts/effects.js
Joshua Seigler dbb7f59197 cooler glows
2025-06-22 01:08:24 -04:00

103 lines
3.1 KiB
JavaScript

"use strict";
const darkModeMediaQuery = window.matchMedia("(prefers-color-scheme: dark)");
const defaultPrefs = {
language: "english",
theme: "auto",
};
document.querySelector('script[data-website-id]').addEventListener('load', () => {
try {
umami.identify({ deviceTheme: darkModeMediaQuery ? "dark" : "light" });
} catch {}
});
function applyPreference(key, value, shouldSave) {
if (umami !== null) {
umami.identify({
[`pref-${key}`]: value,
});
if (shouldSave) {
umami.track(`Set ${key} to ${value}`);
}
}
document.body.setAttribute(`data-${key}`, value);
document.querySelectorAll(`input[name=${key}]`).forEach((input) => {
if (input.value === value) {
input.checked = true;
}
});
if (shouldSave) {
localStorage.setItem(key, value);
}
}
/** @param {Event} evt */
function removeEffect({ target }) {
const effectsLayer = document.querySelector("#effects");
const effects = Array.from(effectsLayer.children).filter(
(e) => e.__effectParent === target,
);
effects.forEach((e) => {
e.getAnimations().forEach((anim) => {
if (anim.currentTime < 100) {
anim.pause();
effectsLayer.removeChild(e);
return;
}
anim.pause();
anim.updatePlaybackRate(-0.25);
anim.play();
anim.addEventListener("finish", () => {
if (effectsLayer.contains(e)) {
effectsLayer.removeChild(e);
}
});
});
});
}
/** @param {Event} evt */
function addEffect({ target }) {
const effectsLayer = document.querySelector("#effects");
if (
target == null ||
!target["matches"] ||
!target.matches("a[href],.nav-toggle-button,button,input[type='radio']")
) {
return;
}
const color = window.getComputedStyle(target).getPropertyValue('--glowColor');
const rects = Array.from(target.getClientRects());
Array.from(target.children).forEach((child) => {
rects.push(...Array.from(child.getClientRects()));
});
rects.forEach((rect) => {
const { top, left, width, height } = rect;
const newEffect = document.createElement("div");
newEffect.__effectParent = target;
newEffect.classList.add("effect-instance");
const padding = "10rem";
newEffect.style.top = `calc(${top + window.scrollY}px - ${padding})`;
newEffect.style.left = `calc(${left + window.scrollX}px - ${padding})`;
newEffect.style.width = `calc(${width}px + 2 * ${padding})`;
newEffect.style.height = `calc(${height}px + 2 * ${padding})`;
newEffect.style.setProperty('--glowColor', color);
effectsLayer.appendChild(newEffect);
});
}
Object.entries(defaultPrefs).forEach(([key, defaultPref]) => {
const currentPref = localStorage.getItem(key) ?? defaultPref;
applyPreference(key, currentPref, false);
document.querySelectorAll(`input[name=${key}]`).forEach((input) => {
input.addEventListener("change", (e) => {
applyPreference(key, e.currentTarget.value, true);
});
});
});
document.addEventListener("mouseenter", addEffect, true);
document.addEventListener("focus", addEffect, true);
document.addEventListener("mouseleave", removeEffect, true);
document.addEventListener("blur", removeEffect, true);