Logo Image Gallery

This block was designed to display a large number of images without taking up too much space.

Design

Stacked	Swiper

Use Cases

Displaying logos for corp. sponsorships
Display logos for career outcomes and internships
Image galleries when you want to display 4+ images without taking up much space.

Fields

Pulls in standard fields for these.

Images (Repeater)

Add images for the block here. You can select multiple images from the media library at once to speed things up.

Image recommendations:

Images are automatically optimized on this component, so oversized images are totally okay!
- You'll just want to make the image large enough that it won't appear blurry. Logos are typically 512px wide.
Logos should be PNGs with transparent backgrounds.
Ideally, all the images will have the same ratio height and width, especially if they don't have a transparent background.

Built in:

Images are vertically and horizontally centered.
Image optimization that calculates approximate image size based on columns and screen size, then passes that info to "sizes" attribute to tell the browser, so oversized images won't cause issues.
Swiper version lazy loads images on hidden slides

Configuration

Maximum Image Height

A number, in pixels, that limits the height of all images. Most useful for when you have a square logo and it's way bigger than the other images.

Top/Bottom Padding

Adds a py- value to each image.

Left/Right Padding

Adds a px- value to each image.

Swiper

Checkbox that puts images in a swiper.

Randomize Order

Checkbox that shuffles the order of the images on load. Most useful when you're using a swiper, and don't want to show favoritism to the first few images.

Randomize After

This field only appears if Randomize Order is checked. Prevents the first X images from randomizing, in case you want to feature the first few images but want the rest random.

Anchor ID

Sets id of the block.

Additional Notes

This block is the first time a component included code that used the Column Structure fields to calculate the approximate image widths for optimization purposes.

Here's the code snippet for how it was done.

//columns
$columns_xs = get_field('columns_xs');
$columns_sm = get_field('columns_sm');
$columns_md = get_field('columns_md');
$columns_lg = get_field('columns_lg'); 
$columns_xl = get_field('columns_xl');

  //Calculates approx. image widths in vw (viewport width) based on column sizes
    //these are calculated for the purpose of defining the sizes="" attribute for the img html
    //so that the browser picks the correct size image to load from the srcset
    //the calculated sizes aren't precise, and are often overestimates, but it's close enough!
  //it also sets all the values for the $columns_ variables, in case they were defaulted at 0, for the swiper code.
  $min_cols = 1; //sets min number of columns. 
  if($columns_sm) : $min_cols = $columns_xs; else: $columns_xs = $min_cols; endif;//sets min columns to # xs columns if defined. if not, $columns_xs will be set to min columns.
  $xs_image = ceil(100 / $columns_xs); //xs screens, 0-575px
  if($columns_sm) : $min_cols = $columns_sm; else: $columns_sm = $min_cols; endif; //sets min columns to # small columns if defined. if not, $columns_sm will be set to min columns.
  $sm_image = ceil(100 / $columns_sm); //sm screens, 576-767px
  if($columns_md) : $min_cols = $columns_md; else: $columns_md = $min_cols; endif; //sets min columns to # med columns if defined. if not, $columns_nd will be set to min columns.
  $md_image = ceil(100 / $columns_md); //md screens, 768-991px
  if($columns_lg) : $min_cols = $columns_lg; else: $columns_lg = $min_cols; endif; //sets min columns to # large columns if defined. if not, $columns_lg will be set to min columns.
  $lg_image = ceil(100 / $columns_lg); //lg screens, 992-1200px
  if($columns_xl) : $min_cols = $columns_xl; else: $columns_xl = $min_cols; endif; //sets min columns to # xl columns if defined. if not, $columns_xl will be set to min columns.
  $xl_image = ceil(100 / $columns_xl); //xl screens, 1200px or more

This block is also the first time we used Column Structure in combination with the Swiper. The code snippet above, combined with the code in the breakpoints parameter of Swiper JS below, is how this was accomplished.

<?php if ($swiper) : ?>
		(function($) {
			$(document).ready(function() {
				var swiperInstances = swiperInstances || {};
					swiperInstances['<?php echo $block['id']; ?>'] = new Swiper('#<?php echo $id ?> .swiper-container', {
          			//XS screen size set as default
					slidesPerView: <?php echo $columns_xs ?>,
          			slidesPerGroup: <?php echo $columns_xs ?>,
					loop: true,
					centeredSlides: false,
          
          lazy: { //adds lazy loading for hidden slides.
            loadPrevNext: true, // Preload previous/next slides
          },

		breakpoints: {
			//set breakpoints the same as flex columns
              //setting slides Per Group means each click of the swiper moves the whole row, instead of one image at a time.
              576: {
				slidesPerView: <?php echo $columns_sm ?>,
                slidesPerGroup: <?php echo $columns_sm ?>,
				spaceBetween: 0
				},
              768: {
				slidesPerView: <?php echo $columns_md ?>,
                slidesPerGroup: <?php echo $columns_md ?>,
				spaceBetween: 0
				},
              992: {
				slidesPerView: <?php echo $columns_lg ?>,
                slidesPerGroup: <?php echo $columns_lg ?>,
				spaceBetween: 0
				},
              1200: {
				slidesPerView: <?php echo $columns_xl ?>,
                slidesPerGroup: <?php echo $columns_xl ?>,
				spaceBetween: 0
				}
			},
						pagination: {
								el: '#<?php echo $id ?> .swiper-pagination',
								type: 'custom',
								renderCustom: function (swiper, current, total) {
									return current + '/' + (total);
								}
							},
						navigation: {
							nextEl: '#<?php echo $id ?> .swiper-button-next',
							prevEl: '#<?php echo $id ?> .swiper-button-prev',
						},
					});
				});
			})(jQuery);
	<?php endif; ?>

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