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@sfyn sfyn/template.php
Created May 12, 2011

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Drupal 6 theme functions to insert a jcarousel that uses lightbox into any node with the appropriate image field, for use in a template.php file
<?php
/**
* Node preprocess function
*/
function mytheme_preprocess_node(&$vars, $hook) {
if ($vars['node']->field_image && !empty($vars['node']->field_image)) {
$vars['image_carousel'] = _mytheme_generate_carousel($vars['node']->field_image);
}
}
/**
* Helper function to get the appropriate imagecache variant of an image
*
* This makes sure that the imagecached version of the image exists, and if it does
* not creates it.
*
* @param $filepath
* The path to the original file
* @param $presetname
* The imagecache preset to use
* @return
* The path to the cached version of the image
*/
function _mytheme_generate_imagecache(&$filepath, $presetname = 'teaser') {
// First, check that the preset actually exists
$preset = imagecache_preset_by_name($presetname);
if (!$preset) {
return FALSE;
}
// Try to get the existing cached image
$dst = imagecache_create_path($presetname, $filepath);
$cache_path = $dst;
if (!file_exists($dst) || is_dir($dst)) {
imagecache_build_derivative($preset['actions'], $filepath, $cache_path);
}
return $cache_path;
}
/**
* Helper function to generate a jcarousel from a cck image field
*
* @param $pics
* The cck image field
* @return
* The images contained in the array, in a carousel or item list
*/
function _mytheme_generate_carousel ($pics) {
$carousel = array();
$lnk_options = array(
'html' => TRUE,
'attributes' => array(
'class' => 'carousel-item',
),
);
// Use Lightbox if available
if (function_exists('lightbox2_menu')) {
$lnk_options['attributes']['rel'] = 'lightbox';
}
foreach ($pics as $item) {
$thumb = _mytheme_generate_imagecache($item['filepath'], 'carousel');
$image = _mytheme_generate_imagecache($item['filepath'], 'large');
$carousel[] = l("<img src='/{$thumb}' alt='' title='{$item['filename']}'/>", $image, $lnk_options);
}
// Theme the feed as a carousel if the module jcarousel is available
if (function_exists('theme_jcarousel')) {
$options = array (
'buttonNextEvent' => 'click',
'buttonPrevEvent' => 'click',
'visible' => 4,
'scroll' => 3,
);
return theme('jcarousel', $carousel, $options);
}
else {
return theme('item_list', $carousel);
}
}
@pawelphilipczyk

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commented Feb 26, 2013

Thank you for that snippet! Got me 90% there :)

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