Photo Gallery with Lightbox ACF #acf #wp #jsLibrary

photo-gallery-with-lightbox-styles.scss

/* IMAGE LIGHTBOX SELECTOR */

#imagelightbox {
	cursor: pointer;
	position: fixed;
	z-index: 10000;
	top: 50%;
	touch-action: none;
}

.imagelightbox-open {
	user-select: none;
	overflow: hidden;
}

/* WITH OVERLAY */

.imagelightbox-overlay {
	background-color: rgba(255, 255, 255, .95);
	position: fixed;
	z-index: 9998;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
}

/* WITH ARROWS */

.imagelightbox-arrow {
	// display: none;
	position: fixed;
	z-index: 10001;
	top: 50%;
	font-size: 1rem;
	border: none;
	border-radius: 50%;
	width: 4em;
	/* 53.3 */
	height: 4em;
	/* 53.3 */
	background: transparent;
	vertical-align: middle;
	padding: 0;
	margin-top: -3.75em;
	/* 60 */
	cursor: pointer;
	box-shadow: none;

	&:hover,
	&:active,
	&:focus {
		background: $color__brand-2;
	}
}

.imagelightbox-arrow-left {
	left: 2.5em;
	/* 40 */
}

.imagelightbox-arrow-right {
	right: 2.5em;
	/* 40 */
}

.imagelightbox-arrow:before {
	width: 0;
	height: 0;
	border: 1em solid transparent;
	content: '';
	display: inline-block;
	margin-bottom: -7%;
}

.imagelightbox-arrow-left:before {
	border-left: none;
	border-right-color: $color__brand-1;
	margin-left: -0.35em;
}

.imagelightbox-arrow-right:before {
	border-right: none;
	border-left-color: $color__brand-1;
	margin-left: 0.2em;
}

/* WITH ACTIVITY INDICATION */

.imagelightbox-loading,
.imagelightbox-loading div {
	border-radius: 9999px;
}

.imagelightbox-loading {
	width: 40px;
	height: 40px;
	border-radius: 50%;
	background: transparent;
	position: fixed;
	left: 50%;
	top: 50%;
	margin: -20px 0 0 -20px;
	z-index: 9999;

	border-top: 6px solid $color__brand-1;
	border-right: 6px solid $color__brand-1;
	border-bottom: 6px solid $color__brand-2;
	border-left: 6px solid $color__brand-2;

	animation: loading 1.2s infinite linear;
}

.imagelightbox-loading div {
	width: 1.3em;
	height: 1.3em;
	background-color: #fff;
	animation: imagelightbox-loading .5s ease infinite;
}

@keyframes imagelightbox-loading {
	from {
		opacity: .5;
		transform: scale(.75);
	}

	50% {
		opacity: 1;
		transform: scale(1);
	}

	to {
		opacity: .5;
		transform: scale(.75);
	}
}

/* WITH "CLOSE" BUTTON */

.imagelightbox-close {
	border: none;
	cursor: pointer;
	width: 3em;
	/* 40 */
	height: 3em;
	/* 40 */
	background-color: transparent;
	position: fixed;
	z-index: 10002;
	top: 2.5em;
	/* 40 */
	right: 2.5em;
	/* 40 */
	border-radius: 50%;
	transition: color .3s ease;

	&:hover,
	&:active,
	&:focus {
		background-color: $color__brand-2;
	}
}

.imagelightbox-close:before,
.imagelightbox-close:after {
	width: 3px;
	background-color: $color__brand-1;
	content: '';
	position: absolute;
	top: 20%;
	bottom: 20%;
	left: 50%;
	margin-left: -1px;
}

.imagelightbox-close:before {
	transform: rotate(45deg);
}

.imagelightbox-close:after {
	transform: rotate(-45deg);
}

/* WITH CAPTION */

.imagelightbox-caption {
	text-align: center;
	font-family: $font__open-semi-bold;
	color: $color__brand-1;
	text-transform: uppercase;
	background-color: #ededed;
	position: fixed;
	z-index: 10001;
	left: 0;
	right: 0;
	bottom: 0;
	padding: 0.625em;
	/* 10 */
}

/* WITH NAVIGATION */

// .imagelightbox-nav {
// 	background-color: rgba(0, 0, 0, .5);
// 	position: fixed;
// 	z-index: 10001;
// 	left: 50%;
// 	bottom: 3.75em;
// 	/* 60 */
// 	padding: 0.313em;
// 	/* 5 */
// 	transform: translateX(-50%);
// 	border-radius: 20px;
// }

// .imagelightbox-nav a {
// 	position: relative;
// 	top: 0.2em;
// 	width: 1em;
// 	/* 20 */
// 	height: 1em;
// 	/* 20 */
// 	border: 1px solid #fff;
// 	display: inline-block;
// 	margin: 0 0.313em;
// 	/* 5 */
// 	border-radius: 50%;
// }

// .imagelightbox-nav .active {
// 	animation: fade-in 0.45s linear;
// 	background-color: #fff;
// }

// .imagelightbox-navitem:active {
// 	background: #808080;
// }

.imagelightbox-loading,
.imagelightbox-overlay,
.imagelightbox-close,
.imagelightbox-nav,
.imagelightbox-arrow {
	animation: fade-in 0.25s linear;
}

@keyframes fade-in {
	from {
		opacity: 0;
	}

	to {
		opacity: 1;
	}
}

@media only screen and (max-width: 41.250em) {

	/* 660 */
	#container {
		width: 100%;
	}

	.imagelightbox-close {
		top: 1.25em;
		/* 20 */
		right: 1.25em;
		/* 20 */
	}

	.imagelightbox-arrow {
		width: 2.5em;
		/* 40 */
		height: 3.75em;
		/* 60 */
		margin-top: -1.875em;
		/* 30 */
	}

	.imagelightbox-arrow-left {
		left: 1.25em;
		/* 20 */
	}

	.imagelightbox-arrow-right {
		right: 1.25em;
		/* 20 */
	}
}

@media only screen and (max-width: 20em) {

	/* 320 */
	.imagelightbox-arrow-left {
		left: 0;
	}

	.imagelightbox-arrow-right {
		right: 0;
	}
}

photo-gallery-with-lightbox.php

<?php
/**
 * Dowload JS Library
 * Homepage: https://rejas.github.io/imagelightbox
 * GitHub: https://github.com/rejas/imagelightbox
 */

// Photo Gallery with Lightbox.
if ( ! function_exists( 'slug_photo_gallery_lightbox' ) ) :
	/**
	 * Displays the photo gallery with lightbox from ACF.
	 *
	 * @return void
	 */
	function slug_photo_gallery_lightbox() {
		if ( function_exists( 'get_field' ) ) :
			$images = get_field( 'gallery' );

			if ( $images ) :
				wp_enqueue_script( 'imagelightbox-library', get_template_directory_uri() . '/js/min/image-lightbox.min.js', array( 'jquery' ), '20190228', true );

				add_action( 'wp_footer', 'initiate_lightbox_js', 100 );
				/**
				 * Runs script for imagelightbox js
				 *
				 * @return void
				 */
				function initiate_lightbox_js() {
					?>

					<script>
						jQuery('a[data-imagelightbox="a"]').imageLightbox({
							activity: true,
							arrows: true,
							button: true,
							caption: true,
							enableKeyboard: true,
							overlay: true,
							quitOnEscKey: true
						});
					</script>

					<?php
				}

				?>

				<div class='gallery'>
					<ul>

						<?php foreach ( $images as $image ) : ?>

							<li>

								<a data-imagelightbox="a" data-ilb2-caption="<?php echo esc_attr( $image['caption'] ); ?>" href="<?php echo esc_attr( $image['url'] ); ?>">
									<img src="<?php echo esc_attr( $image['sizes']['gallery-img'] ); ?>" alt="<?php echo esc_attr( $image['alt'] ); ?>">
								</a>

							</li>

						<?php endforeach; ?>

					</ul>
				</div><!-- .gallery -->

				<?php
			endif;

		endif;
	}
endif;