function flag_ajax_operation()
{
global $wpdb;
// if nonce is not correct it returns -1
check_ajax_referer("flag-ajax");
// check for correct capability
if (!is_user_logged_in()) {
die('-1');
}
// check for correct FlAG capability
if (!current_user_can('FlAG Upload images') || !current_user_can('FlAG Manage gallery')) {
die('-1');
}
// include the flag function
include_once dirname(__FILE__) . '/functions.php';
// Get the image id
if (isset($_POST['image'])) {
$id = (int) $_POST['image'];
// let's get the image data
$picture = flagdb::find_image($id);
// what do you want to do ?
switch ($_POST['operation']) {
case 'create_thumbnail':
$result = flagAdmin::create_thumbnail($picture);
break;
case 'resize_image':
$result = flagAdmin::resize_image($picture);
break;
case 'webview_image':
$result = flagAdmin::webview_image($picture);
break;
case 'import_metadata':
$result = flagAdmin::import_MetaData($id);
break;
case 'copy_metadata':
$result = flagAdmin::copy_MetaData($id);
break;
case 'get_image_ids':
$result = flagAdmin::get_image_ids($id);
break;
default:
do_action('flag_ajax_' . sanitize_key($_POST['operation']));
die('-1');
break;
}
// A success should return a '1'
die($result);
}
// The script should never stop here
die('0');
}
/**
* flagAdmin::createThumbnail() - function to create or recreate a thumbnail
*
* @param object | int $image contain all information about the image or the id
* @return string result code
*/
public static function create_thumbnail($image)
{
global $flag;
if (is_numeric($image)) {
$image = flagdb::find_image($image);
}
if (!is_object($image)) {
return __('Object didn\'t contain correct data', 'flag');
}
$dest_path = dirname($image->webimagePath);
if (!is_dir($dest_path)) {
flagGallery::create_webview_folder(dirname($image->imagePath));
@chmod($dest_path, 0755);
}
if (!class_exists('flag_Thumbnail')) {
require_once flagGallery::graphic_library();
}
// check for existing thumbnail
if (file_exists($image->thumbPath)) {
if (!is_writable($image->thumbPath)) {
return $image->filename . __(' is not writeable ', 'flag');
}
}
$thumb = new flag_Thumbnail($image->imagePath, TRUE);
$img_size = @getimagesize($image->imagePath);
// skip if file is not there
if (!$thumb->error) {
if ($flag->options['thumbFix']) {
// check for portrait format
if ($flag->options['thumbWidth'] / $flag->options['thumbHeight'] > $img_size[0] / $img_size[1]) {
// first resize to the wanted width
$thumb->resize($flag->options['thumbWidth'], 0);
// get optimal y startpos
$ypos = ($thumb->currentDimensions['height'] - $flag->options['thumbHeight']) / 2;
$thumb->crop(0, $ypos, $flag->options['thumbWidth'], $flag->options['thumbHeight']);
} else {
// first resize to the wanted height
$thumb->resize(0, $flag->options['thumbHeight']);
// get optimal x startpos
$xpos = ($thumb->currentDimensions['width'] - $flag->options['thumbWidth']) / 2;
$thumb->crop($xpos, 0, $flag->options['thumbWidth'], $flag->options['thumbHeight']);
}
//this create a thumbnail but keep ratio settings
} else {
$thumb->resize($flag->options['thumbWidth'], $flag->options['thumbHeight']);
}
// save the new thumbnail
$thumb->save($image->thumbPath, $flag->options['thumbQuality']);
flagAdmin::chmod($image->thumbPath);
//read the new sizes
$new_size = @getimagesize($image->thumbPath);
$size['width'] = $new_size[0];
$size['height'] = $new_size[1];
// add them to the database
flagdb::update_image_meta($image->pid, array('thumbnail' => $size));
}
$thumb->destruct();
if (!empty($thumb->errmsg)) {
return $image->filename . ' (Error : ' . $thumb->errmsg . ')';
}
do_action('flag_thumbnail_created', $image);
flagAdmin::webview_image($image);
// success
return '1';
}