blog/frontend/src/lib/components/navbar.svelte
2024-08-10 22:14:24 +01:00

114 lines
2.9 KiB
Svelte

<!-- svelte-ignore a11y-missing-content -->
<script>
import '$lib/css/base.css';
import '$lib/css/navbar.css';
import { page } from '$app/stores';
import anime from 'animejs';
import Search from '$lib/components/search.svelte';
const SCROLL = 150;
$: pageUrl = $page.url.pathname;
let scrollY;
let cursorX;
let cursorY;
let navbar_title;
let navbar_category;
function isActive(str, url) {
if (url === str) return 'navbar-active';
else return '';
}
function isActiveMultiple(strArray, url) {
for (const str of strArray) {
const returnVal = isActive(str, url);
if (returnVal != '') return returnVal;
}
return '';
}
function update_gradient(event, div) {
const rect = div.getBoundingClientRect();
cursorX = event.clientX - rect.left;
cursorY = event.clientY - rect.top;
div.style.backgroundImage = `radial-gradient(circle farthest-corner at ${Math.floor(cursorX)}px ${Math.floor(cursorY)}px, var(--navbar-ligher) 0%, var(--navbar-darker) 100%)`;
}
function animateForeground(isEntering, div_back) {
const targetOpacity = isEntering ? 1 : 0;
anime({
targets: div_back,
opacity: [1 - targetOpacity, targetOpacity],
duration: 400,
easing: 'easeInOutQuad'
});
}
function changeScroll() {
document.documentElement.style.setProperty(
'--navbar-height',
scrollY < SCROLL ? '6rem' : '5rem'
);
}
</script>
<svelte:window bind:scrollY on:scroll={changeScroll} />
<!-- Navbar -->
<nav class={scrollY < SCROLL ? 'flex-row' : 'flex-row floating'}>
<div
role="banner"
class="navbar-height flex-row container"
on:mousemove={(event) => {
update_gradient(event, navbar_title);
}}
on:mouseenter={() => {
animateForeground(true, navbar_title);
}}
on:mouseleave={() => {
animateForeground(false, navbar_title);
}}
>
<div class="navbar-title content">
<h1 class="title">Etheryo Blog</h1>
</div>
<div class={scrollY < SCROLL ? 'navbar-overlay-front' : ''} />
<div class={scrollY < SCROLL ? 'navbar-overlay-back' : ''} bind:this={navbar_title} />
</div>
<div
role="banner"
class="navbar-height flex-row flex-end container"
on:mousemove={(event) => {
update_gradient(event, navbar_category);
}}
on:mouseenter={() => {
animateForeground(true, navbar_category);
}}
on:mouseleave={() => {
animateForeground(false, navbar_category);
}}
>
<div class="content navbar-categories">
<div>
<a class={isActiveMultiple(['/', '/articles', '/style'], pageUrl)} href="/articles"
>Articles</a
>
</div>
<div>
<a class={isActive('/authors', pageUrl)} href="/authors">Auteurs</a>
</div>
<div>
<a class={isActive('/categories', pageUrl)} href="/categories">Catégories</a>
</div>
<Search width="15rem" font_size="0.8rem" padding="0rem" logo_size=25/>
</div>
<div class={scrollY < SCROLL ? 'navbar-overlay-front' : ''} />
<div class={scrollY < SCROLL ? 'navbar-overlay-back' : ''} bind:this={navbar_category} />
</div>
</nav>
<div class="navbar-fake" />