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<?php
/**
* Clean up gallery_shortcode()
*
* Re-create the [gallery] shortcode and use thumbnails styling from Bootstrap
* The number of columns must be a factor of 12.
*
* @link http://getbootstrap.com/components/#thumbnails
*/
function roots_gallery($attr) {
$post = get_post();
static $instance = 0;
$instance++;
if (!empty($attr['ids'])) {
if (empty($attr['orderby'])) {
$attr['orderby'] = 'post__in';
}
$attr['include'] = $attr['ids'];
}
$output = apply_filters('post_gallery', '', $attr);
if ($output != '') {
return $output;
}
if (isset($attr['orderby'])) {
$attr['orderby'] = sanitize_sql_orderby($attr['orderby']);
if (!$attr['orderby']) {
unset($attr['orderby']);
}
}
extract(shortcode_atts(array(
'order' => 'ASC',
'orderby' => 'menu_order ID',
'id' => $post->ID,
'itemtag' => '',
'icontag' => '',
'captiontag' => '',
'columns' => 4,
'size' => 'thumbnail',
'include' => '',
'exclude' => '',
'link' => 'file'
), $attr));
$id = intval($id);
$columns = (12 % $columns == 0) ? $columns: 4;
$grid = sprintf('col-sm-%1$s col-lg-%1$s', 12/$columns);
if ($order === 'RAND') {
$orderby = 'none';
}
if (!empty($include)) {
$_attachments = get_posts(array('include' => $include, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby));
$attachments = array();
foreach ($_attachments as $key => $val) {
$attachments[$val->ID] = $_attachments[$key];
}
} elseif (!empty($exclude)) {
$attachments = get_children(array('post_parent' => $id, 'exclude' => $exclude, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby));
} else {
$attachments = get_children(array('post_parent' => $id, 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image', 'order' => $order, 'orderby' => $orderby));
}
if (empty($attachments)) {
return '';
}
if (is_feed()) {
$output = "\n";
foreach ($attachments as $att_id => $attachment) {
$output .= wp_get_attachment_link($att_id, $size, true) . "\n";
}
return $output;
}
$unique = (get_query_var('page')) ? $instance . '-p' . get_query_var('page'): $instance;
$output = '<div class="gallery gallery-' . $id . '-' . $unique . '">';
$i = 0;
foreach ($attachments as $id => $attachment) {
$image = ('file' == $link) ? wp_get_attachment_link($id, $size, false, false) : wp_get_attachment_link($id, $size, true, false);
$output .= ($i % $columns == 0) ? '<div class="row gallery-row">': '';
$output .= '<div class="' . $grid .'">' . $image;
if (trim($attachment->post_excerpt)) {
$output .= '<div class="caption hidden">' . wptexturize($attachment->post_excerpt) . '</div>';
}
$output .= '</div>';
$i++;
$output .= ($i % $columns == 0) ? '</div>' : '';
}
$output .= ($i % $columns != 0 ) ? '</div>' : '';
$output .= '</div>';
return $output;
}
if (current_theme_supports('bootstrap-gallery')) {
remove_shortcode('gallery');
add_shortcode('gallery', 'roots_gallery');
add_filter('use_default_gallery_style', '__return_null');
}
/**
* Add class="thumbnail img-thumbnail" to attachment items
*/
function roots_attachment_link_class($html) {
$postid = get_the_ID();
$html = str_replace('<a', '<a class="thumbnail img-thumbnail"', $html);
return $html;
}
add_filter('wp_get_attachment_link', 'roots_attachment_link_class', 10, 1);
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