Created
March 7, 2014 22:15
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Change the WordPress gallery html output
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<?php | |
//Modify the output of the gallery short code | |
add_filter('post_gallery', 'scaffolding_post_gallery', 10, 2); | |
function scaffolding_post_gallery($attr) { | |
$post = get_post(); | |
static $instance = 0; | |
$instance++; | |
if ( ! empty( $attr['ids'] ) ) { | |
// 'ids' is explicitly ordered, unless you specify otherwise. | |
if ( empty( $attr['orderby'] ) ) | |
$attr['orderby'] = 'post__in'; | |
$attr['include'] = $attr['ids']; | |
} | |
// Allow plugins/themes to override the default gallery template. | |
$output = apply_filters('post_gallery', '', $attr); | |
if ( $output != '' ) | |
return $output; | |
// We're trusting author input, so let's at least make sure it looks like a valid orderby statement | |
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 ? $post->ID : 0, | |
'itemtag' => 'dl', | |
'icontag' => 'dt', | |
'captiontag' => 'dd', | |
'columns' => 3, | |
'size' => 'thumbnail', | |
'include' => '', | |
'exclude' => '', | |
'link' => '' | |
), $attr, 'gallery')); | |
$id = intval($id); | |
if ( 'RAND' == $order ) | |
$orderby = 'none'; | |
if ( !empty($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; | |
} | |
$itemtag = tag_escape($itemtag); | |
$captiontag = tag_escape($captiontag); | |
$icontag = tag_escape($icontag); | |
$valid_tags = wp_kses_allowed_html( 'post' ); | |
if ( ! isset( $valid_tags[ $itemtag ] ) ) | |
$itemtag = 'dl'; | |
if ( ! isset( $valid_tags[ $captiontag ] ) ) | |
$captiontag = 'dd'; | |
if ( ! isset( $valid_tags[ $icontag ] ) ) | |
$icontag = 'dt'; | |
$columns = intval($columns); | |
$itemwidth = $columns > 0 ? floor(100/$columns) : 100; | |
$float = is_rtl() ? 'right' : 'left'; | |
$selector = "gallery-{$instance}"; | |
$gallery_style = $gallery_div = ''; | |
if ( apply_filters( 'use_default_gallery_style', true ) ) | |
$gallery_style = " | |
<style type='text/css'> | |
#{$selector} { | |
margin: auto; | |
} | |
#{$selector} .gallery-item { | |
float: {$float}; | |
margin-top: 10px; | |
text-align: center; | |
width: {$itemwidth}%; | |
} | |
#{$selector} img { | |
border: 2px solid #cfcfcf; | |
} | |
#{$selector} .gallery-caption { | |
margin-left: 0; | |
} | |
/* see gallery_shortcode() in wp-includes/media.php */ | |
</style>"; | |
$size_class = sanitize_html_class( $size ); | |
$gallery_div = "<div id='$selector' class='gallery galleryid-{$id} gallery-columns-{$columns} gallery-size-{$size_class}'>"; | |
$output = apply_filters( 'gallery_style', $gallery_style . "\n\t\t" . $gallery_div ); | |
$i = 0; | |
foreach ( $attachments as $id => $attachment ) { | |
if ( ! empty( $link ) && 'file' === $link ) | |
$image_output = wp_get_attachment_link( $id, $size, false, false ); | |
elseif ( ! empty( $link ) && 'none' === $link ) | |
$image_output = wp_get_attachment_image( $id, $size, false ); | |
else | |
$image_output = wp_get_attachment_link( $id, $size, true, false ); | |
$image_meta = wp_get_attachment_metadata( $id ); | |
$orientation = ''; | |
if ( isset( $image_meta['height'], $image_meta['width'] ) ) | |
$orientation = ( $image_meta['height'] > $image_meta['width'] ) ? 'portrait' : 'landscape'; | |
$output .= "<{$itemtag} class='gallery-item'>"; | |
$output .= " | |
<{$icontag} class='gallery-icon {$orientation}'> | |
$image_output | |
</{$icontag}>"; | |
if ( $captiontag && trim($attachment->post_excerpt) ) { | |
$output .= " | |
<{$captiontag} class='wp-caption-text gallery-caption'> | |
" . wptexturize($attachment->post_excerpt) . " | |
</{$captiontag}>"; | |
} | |
$output .= "</{$itemtag}>"; | |
if ( $columns > 0 && ++$i % $columns == 0 ) | |
$output .= '<br style="clear: both" />'; | |
} | |
$output .= " | |
<br style='clear: both;' /> | |
</div>\n"; | |
return $output; | |
} |
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Currently a work in progress.