/**
* @author derek@plogger.org
* @return string html list of thumbnails
*/
function plogger_get_thumbnail_nav()
{
global $config;
if (empty($config["enable_thumb_nav"])) {
return '';
}
// return if thumbnail nav turned off
$image_list = $GLOBALS["image_list"];
$array_length = count($image_list);
// store array length
$curr = $GLOBALS["current_picture"];
$pos_array = array_keys($image_list, $curr["id"]);
$curr_pos = $pos_array[0];
$range = isset($config["thumb_nav_range"]) ? $config["thumb_nav_range"] : 0;
if ($range == 0) {
// if length is 0, use all thumbs
// get_picture_by_id modified to take arrays, so pass the whole array
$thumb_pic_array = get_picture_by_id($image_list);
} else {
// else, add a thumb each side of current for each value of $config['thumb_nav_range']
$thumb_nav_array = array($curr['id']);
for ($i = 1; $i < $range + 1; $i++) {
// use unshift() to add to the beginning, push() to add to the end
// check that we haven't run out of images below: that (current image - offset) >= 0
if ($curr_pos - $i >= 0) {
unset($newpic);
// php has problems with reassigning via iteration
$newpic = $image_list[$curr_pos - $i];
if (!empty($newpic)) {
array_unshift($thumb_nav_array, $newpic);
}
} else {
// grab from the end of the array
unset($newpic);
// php has problems with reassigning via iteration
$newpic = $image_list[$array_length + ($curr_pos - $i)];
// adding a negative value, don't fret
if (!empty($newpic)) {
array_unshift($thumb_nav_array, $newpic);
}
}
// check that we haven't run out of images above: (current image + offset) <= (total images)
if ($array_length - 1 >= $curr_pos + $i) {
unset($newpic);
// php has problems with reassigning via iteration
$newpic = $image_list[$curr_pos + $i];
if (!empty($newpic)) {
array_push($thumb_nav_array, $newpic);
}
} else {
// grab from the beginning of the array
unset($newpic);
// php has problems with reassigning via iteration
$newpic = $image_list[$curr_pos + $i - $array_length];
if (!empty($newpic)) {
array_push($thumb_nav_array, $newpic);
}
}
}
$thumb_pic_array = array();
foreach ($thumb_nav_array as $thumb_nav_value) {
array_push($thumb_pic_array, get_picture_by_id($thumb_nav_value));
}
}
return plogger_format_thumb_nav($thumb_pic_array);
}
/**
* @author derek@plogger.org
* @return string html list of thumbnails
*/
function plogger_get_thumbnail_nav()
{
global $config, $thumbnail_config;
if ($thumbnail_config[THUMB_NAV]['disabled'] == 1) {
return '';
}
// Return if thumbnail nav disabled
$thumb_pic_array = array();
$image_list = $GLOBALS['image_list'];
$array_length = count($image_list);
// Store array length
$curr = $GLOBALS['current_picture'];
$curr_pos = array_search($curr['id'], $image_list);
$range = isset($config['thumb_nav_range']) ? $config['thumb_nav_range'] : 0;
// If length is 0, use all thumbs
if ($range == 0) {
// get_picture_by_id modified to take arrays, so pass the whole array
$thumb_nav_array = $image_list;
// Else, add a thumb each side of current for each value of $config['thumb_nav_range']
} else {
$thumb_nav_array = array($curr['id']);
$count = 1;
for ($i = 1; $i < $range; $i++) {
// If we're at or over our range, break the loop
if ($count >= $range) {
break;
}
// Use unshift() to add to the beginning, push() to add to the end
// Check that we have images on each side
if ($curr_pos - $i >= 0) {
// Add a previous picture
if (!empty($image_list[$curr_pos - $i])) {
array_unshift($thumb_nav_array, $image_list[$curr_pos - $i]);
}
$count++;
}
if ($array_length - 1 >= $curr_pos + $i) {
// Add a next picture
if (!empty($image_list[$curr_pos + $i])) {
array_push($thumb_nav_array, $image_list[$curr_pos + $i]);
}
$count++;
}
}
// Check our range again and use array_shift to remove a single previous picture
// Should only be a single digit over in case of odd numbered range
if (count($thumb_nav_array) > $range) {
array_shift($thumb_nav_array);
}
}
foreach ($thumb_nav_array as $thumb_nav_value) {
$thumb_pic_array[] = get_picture_by_id($thumb_nav_value);
}
return plogger_format_thumb_nav($thumb_pic_array);
}
