File Manager

<?php
/**

Custom thumbnail for NGG
Author : Simone Fumagalli | simone@iliveinperego.com
More info and update : http://www.iliveinperego.com/rotate_for_ngg/

Credits:
NextGen Gallery : Alex Rabe | http://alexrabe.boelinger.com/wordpress-plugins/nextgen-gallery/
 **/

require_once dirname( __DIR__ ) . '/ngg-config.php';
require_once NGGALLERY_ABSPATH . '/lib/image.php';

if ( ! is_user_logged_in() ) {
	die( esc_html__( 'Cheatin&#8217; uh?', 'nggallery' ) );
}

if ( ! current_user_can( 'NextGEN Manage gallery' ) ) {
	die( esc_html__( 'Cheatin&#8217; uh?', 'nggallery' ) );
}

if ( ! isset( $_GET['nonce'] ) || ! wp_verify_nonce( sanitize_text_field( wp_unslash( $_GET['nonce'] ) ), 'ngg_edit_rotation' ) ) {
	die( esc_html( __( 'Permission denied', 'nggallery' ) ) );
}

if ( ! isset( $_GET['id'] ) ) {
	die( esc_html( __( 'Permission denied', 'nggallery' ) ) );
}

global $wpdb;

$id = (int) $_GET['id'];

// let's get the image data.
$picture = nggdb::find_image( $id );

require_once nggGallery::graphic_library();

// Generate a url to a preview image.
$storage       = \Imagely\NGG\DataStorage\Manager::get_instance();
$preview_image = $storage->get_image_url( $id, 'full' );
?>

<script type='text/javascript'>
	var selectedImage = "thumb<?php echo $id; ?>";
	var rotateImageNonce = '<?php print esc_attr( wp_create_nonce( 'ngg-rotate-image' ) ); ?>';

	function rotateImage() {

		var rotate_angle = jQuery('input[name=ra]:checked').val();

		jQuery.ajax({
			url: ajaxurl,
			type : "POST",
			data:  {
				action: 'rotateImage',
				nonce: rotateImageNonce,
				id: <?php print esc_attr( $id ); ?>,
				ra: rotate_angle
			},
			cache: false,
			success: function (msg) {
				var d = new Date();
				newUrl = jQuery("#"+selectedImage).attr("src") + "?" + d.getTime();
				jQuery("#"+selectedImage).attr("src" , newUrl);

				showMessage('<?php esc_html_e( 'Image rotated', 'nggallery' ); ?>')
			},
			error: function (msg, status, errorThrown) { showMessage('<?php esc_html_e( 'Error rotating thumbnail', 'nggallery' ); ?>') }
		});

	}

	function showMessage(message) {
		jQuery('#thumbMsg').html(message);
		jQuery('#thumbMsg').css({'display':'block'});
		setTimeout(function(){ jQuery('#thumbMsg').fadeOut('slow'); }, 1500);

		var d = new Date();
		newUrl = jQuery("#imageToEdit").attr("src") + "?" + d.getTime();

		jQuery("#imageToEdit").attr("src" , newUrl);

	}
</script>

<table align="center">
	<tr>
		<td valign="middle" align="center" id="ngg-overlay-dialog-main">
			<img src="<?php echo \Imagely\NGG\Util\Router::esc_url( $preview_image ) . '?' . time() . rand( 1, 100 ); ?>"
				alt=""
				id="imageToEdit"
				style="max-width: 450px;
						max-height: 350px;"/>
		</td>
		<td>
			<input type="radio" name="ra" value="cw" /><?php esc_html_e( '90&deg; clockwise', 'nggallery' ); ?><br />
			<input type="radio" name="ra" value="ccw" /><?php esc_html_e( '90&deg; counter-clockwise', 'nggallery' ); ?><br />
			<input type="radio" name="ra" value="fv" /><?php esc_html_e( 'Flip vertically', 'nggallery' ); ?><br />
			<input type="radio" name="ra" value="fh" /><?php esc_html_e( 'Flip horizontally', 'nggallery' ); ?>
		</td>
	</tr>
</table>
<div id="ngg-overlay-dialog-bottom">
	<input type="button" name="update" value="<?php esc_attr_e( 'Update', 'nggallery' ); ?>" onclick="rotateImage()" class="button-primary" />
	<div id="thumbMsg"></div>
</div>