Created
September 25, 2011 15:59
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filter gallery shortcode
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<?php | |
// Filter the gallery shortcode defaults | |
// http://wordpress.stackexchange.com/questions/4343/how-to-customise-the-output-of-the-wp-image-gallery-shortcode-from-a-plugin | |
add_filter( 'post_gallery', 'my_post_gallery', 10, 2 ); | |
function my_post_gallery( $output, $attr) { | |
global $post, $wp_locale; | |
static $instance = 0; | |
$instance++; | |
extract(shortcode_atts(array( | |
'order' => 'ASC', | |
'orderby' => 'menu_order ID', | |
'id' => $post->ID, | |
'itemtag' => 'dl', | |
'icontag' => 'dt', | |
'captiontag' => 'dd', | |
'columns' => 3, // Changing the default thumbs per row | |
'size' => 'wpf-thumb', // Making the thumbnail size my custom one | |
'include' => '', | |
'exclude' => '' | |
), $attr)); | |
$id = intval($id); | |
if ( 'RAND' == $order ) | |
$orderby = 'none'; | |
if ( !empty($include) ) { | |
$include = preg_replace( '/[^0-9,]+/', '', $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) ) { | |
$exclude = preg_replace( '/[^0-9,]+/', '', $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); | |
$columns = intval($columns); | |
$itemwidth = $columns > 0 ? floor(100/$columns) : 100; | |
$float = is_rtl() ? 'right' : 'left'; | |
$selector = "gallery-{$instance}"; | |
$output = apply_filters('gallery_style', " | |
<style type='text/css'> | |
#{$selector} { | |
margin: auto; | |
} | |
#{$selector} .gallery-item { | |
float: {$float}; | |
margin-top: 10px; | |
text-align: center; | |
width: {$itemwidth}%; } | |
#{$selector} img { | |
border: 2px solid #cfcfcf; | |
} | |
#{$selector} .gallery-caption { | |
margin-left: 0; | |
} | |
</style> | |
<!-- see gallery_shortcode() in wp-includes/media.php --> | |
<div id='$selector' class='gallery galleryid-{$id}'>"); | |
$i = 0; | |
foreach ( $attachments as $id => $attachment ) { | |
$link = isset($attr['link']) && 'file' == $attr['link'] ? wp_get_attachment_link($id, $size, false, false) : wp_get_attachment_link($id, $size, true, false); | |
$output .= "<{$itemtag} class='gallery-item'>"; | |
$output .= " | |
<{$icontag} class='gallery-icon'> | |
$link | |
</{$icontag}>"; | |
if ( $captiontag && trim($attachment->post_excerpt) ) { | |
$output .= " | |
<{$captiontag} class='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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