image.php

<?php
/**
 * The Template for displaying all single images.
 */

get_header(); ?>
<?php
global $show_navigation_between_portfolio_items;
while (have_posts()):
  the_post();
  $excerpt = get_the_excerpt();
  $parent = get_post_field('post_parent', $id);

  if ($parent != 0) {
    $parent_family = get_post_type($parent);
    $args_original = array(
      'post_type' => 'post',
      'include' => $parent
    );
    $original_post = get_posts($args_original);
    foreach ($original_post as $post):
      setup_postdata($post);
      $i_am_number = $post->ID;
      $original_title = get_the_title();
      $original_content = get_the_content();
      $current_post_url = get_permalink();
      $prev_post = get_adjacent_post(false, '', true);
      $next_post = get_adjacent_post(false, '', false);
    endforeach;
    wp_reset_query();
  }

  //function to get next or previous keys in an array
  function array_navigate($array, $key)
  {
    $keys = array_keys($array);
    $index = array_flip($keys);
    $return = array();
    $return['prev'] = (isset($keys[$index[$key] - 1])) ? $keys[$index[$key] - 1] : end($keys);
    $return['next'] = (isset($keys[$index[$key] + 1])) ? $keys[$index[$key] + 1] : current($keys);
    return $return;
  }

  function previous_attachment_ID($att_post)
  {
    //get the attachments which share the same post parent
    $images = get_children(
      array(
        'post_parent' => $att_post->post_parent,
        'post_type' => 'attachment',
        'post_mime_type' => 'image',
        'output' => 'ARRAY_N',
        'orderby' => 'menu_order',
        'order' => 'ASC'
      ));

    if ($images) {
      //get the id of the previous attachment
      $ppid_arr = array_navigate($images, $att_post->ID);
      $ppid = $ppid_arr['prev'];
      return $ppid;
    }
    return false;
  }

  //previous attachment link function
  function prev_att_link($att_post = null)
  {
    if ($att_post == null) {
      global $post;
      $att_post = get_post($post);
    }
    $ppid = previous_attachment_ID($att_post);
    if ($ppid != false) {
      return '<a href="' . get_attachment_link($ppid) . '" class="previous-attachment-link data-swup-preload" aria-label="' . __('Previous image', 'paperplane-photography-theme') . '" class="data-swup-preload"></a>';
    } else {
      //there is no previous link
      return false;
    }
  }

  function next_attachment_ID($att_post)
  {
    //get the attachments which share the same post parent
    $images = get_children(
      array(
        'post_parent' => $att_post->post_parent,
        'post_type' => 'attachment',
        'post_mime_type' => 'image',
        'output' => 'ARRAY_N',
        'orderby' => 'menu_order',
        'order' => 'ASC'
      ));
    if ($images) {
      //get the id of the next attachment
      $ppid_arr = array_navigate($images, $att_post->ID);
      $ppid = $ppid_arr['next'];
      return $ppid;
    }
    return false;
  }

  //next attachment link function
  function next_att_link($att_post = null)
  {
    if ($att_post == null) {
      global $post;
      $att_post = get_post($post);
    }
    $ppid = next_attachment_ID($att_post);
    if ($ppid != false) {
      return '<a href="' . get_attachment_link($ppid) . '" class="next-attachment-link data-swup-preload" aria-label="' . __('Next image', 'paperplane-photography-theme') . '" class="data-swup-preload"></a>';
    } else {
      return false;
    }
  }

  $attachments = array_values(
    get_children(
      array(
        'post_parent' => $post->post_parent,
        'post_status' => 'inherit',
        'post_type' => 'attachment',
        'post_mime_type' => 'image',
        'order' => 'ASC',
        'orderby' => 'menu_order ID',
      )
    ));
  foreach ($attachments as $k => $attachment):
    if ($attachment->ID == $post->ID)
      break;
  endforeach;
  $k++;
  $total_attachments = count($attachments);
  // If there is more than 1 attachment in a gallery
  if (count($attachments) > 1):
    if (isset($attachments[$k])):
      // get the URL of the next image attachment
      $next_attachment_url = get_attachment_link($attachments[$k]->ID);
    else:
      // or get the URL of the first image attachment
      $next_attachment_url = get_attachment_link($attachments[0]->ID);
    endif;
  else:
    // or, if there's only 1 image, get the URL of the image
    $next_attachment_url = wp_get_attachment_url();
  endif;



  $attachment_id = get_the_ID();
  $picturecaption = get_post(get_post_thumbnail_id())->post_excerpt; //The Caption
  $attachment_title = get_the_title($attachment_id);
  $attachment_alt = get_post_meta($attachment_id, '_wp_attachment_image_alt', true);
  $attachment_description = get_post(get_post_thumbnail_id())->post_content; //Long description
  $thumb_url_desktop = wp_get_attachment_image_src($attachment_id, 'full_desk', true);
  ?>
  <script type="application/ld+json">
  {
    "@context": "http://schema.org",
    "@type": "ImageObject",
    "author": "<?php echo get_bloginfo('name'); ?>",
    "contentUrl": "<?php echo $thumb_url_desktop[0]; ?>",
    "datePublished": "<?php echo get_the_date('Y-m-d'); ?>",
    "description": "<?php echo wp_strip_all_tags(str_replace('"', '', $original_content)); ?> - <?php echo wp_strip_all_tags(str_replace('"', '', $attachment_alt)); ?>",
    "name": "<?php echo $original_title; ?>"
  }
  </script>


  <?php
  global $elenco_foto;
  if ($elenco_foto === 'si') {
    include(locate_template('template-parts/gallery-thumbs-one-page-one-picture.php'));
  }
  ?>
  <div id="delight-approved" class="photo-frame" data-picture-id="<?php echo get_the_ID(); ?>">
    <div class="photo-hold">
      <div class="sk-folding-cube">
        <div class="sk-cube1 sk-cube"></div>
        <div class="sk-cube2 sk-cube"></div>
        <div class="sk-cube4 sk-cube"></div>
        <div class="sk-cube3 sk-cube"></div>
      </div>
      <?php
      $image_data = array(
        'image_type' => 'post_thumbnail',
        // options: post_thumbnail, acf_field, acf_sub_field
        'image_value' => '',
        // se utilizzi un custom field indica qui il nome del campo
        'size_fallback' => 'full'
      );
      $image_sizes = array(
        // qui sono definiti i ritagli o dimensioni. Devono corrispondere per numero a quanto dedinfito nella funzione nei parametri data-srcset o srcset
        'desktop_retina' => 'single_image_retina',
        'desktop' => 'single_image',
        'mobile' => 'single_image',
        'mobile_retina' => 'single_image_retina',
        'micro' => 'micro'
      );
      print_theme_single_image($image_data, $image_sizes);
      ?>
    </div>
    <div class="absl_swipe"></div>
    <div class="navi-click navi-click-left delight-area">
      <?php echo prev_att_link(); ?>
    </div>
    <div class="navi-click navi-click-right delight-area">
      <?php echo next_att_link(); ?>
    </div>
  </div>

  <div class="wrapper delight-area">
    <div class="wrapper-padded">
      <div class="photo-navi navi-text aligncenter">
        <?php
        global $contatore_foto;
        if ($contatore_foto === 'si' && $total_attachments > 1) {
          echo $k . ' / ' . $total_attachments;
        }
        ?>
      </div>

      <div class="wrapper-padded-more-650 delight-area">
        <div class="content-styled aligncenter">
          <?php if ($attachment_description != ''): ?>
            <div class="picture-info lined">
              <div class="content-styled">
                <p>
                  <?php echo $attachment_description; ?>
                </p>
              </div>
            </div>
          <?php endif; ?>
          <div class="alignleft">
            <h1 class="aligncenter">
              <?php echo $original_title; ?>
            </h1>
            <?php foreach ($original_post as $post):
              setup_postdata($post); ?>
              <?php the_content(); ?>
            <?php endforeach;
            wp_reset_query(); ?>
          </div>

        </div>
      </div>
    </div>
  </div>

<?php endwhile; ?>
<?php
if ($show_navigation_between_portfolio_items === 'yes-navi') {
  include(locate_template('template-parts/gallery-footer.php'));
}
if ($show_navigation_between_portfolio_items === 'yes-cat') {
  include(locate_template('template-parts/gallery-footer-back.php'));
}
?>
<?php get_footer(); ?>