1 files changed, 24 insertions, 18 deletions
diff --git a/phpBB/includes/functions_posting.php b/phpBB/includes/functions_posting.php
index 1e8f1ad00d..c7d691287c 100644
--- a/phpBB/includes/functions_posting.php
+++ b/phpBB/includes/functions_posting.php
@@ -519,7 +519,7 @@ function get_supported_image_types($type = false)
 */
 function create_thumbnail($source, $destination, $mimetype)
 {
-	global $config, $phpbb_filesystem;
+	global $config, $phpbb_filesystem, $phpbb_dispatcher;
 
 	$min_filesize = (int) $config['img_min_thumb_filesize'];
 	$img_filesize = (file_exists($source)) ? @filesize($source) : false;
@@ -551,25 +551,31 @@ function create_thumbnail($source, $destination, $mimetype)
 		return false;
 	}
 
-	$used_imagick = false;
+	$thumbnail_created = false;
 
-	// Only use ImageMagick if defined and the passthru function not disabled
-	if ($config['img_imagick'] && function_exists('passthru'))
-	{
-		if (substr($config['img_imagick'], -1) !== '/')
-		{
-			$config['img_imagick'] .= '/';
-		}
-
-		@passthru(escapeshellcmd($config['img_imagick']) . 'convert' . ((defined('PHP_OS') && preg_match('#^win#i', PHP_OS)) ? '.exe' : '') . ' -quality 85 -geometry ' . $new_width . 'x' . $new_height . ' "' . str_replace('\\', '/', $source) . '" "' . str_replace('\\', '/', $destination) . '"');
-
-		if (file_exists($destination))
-		{
-			$used_imagick = true;
-		}
-	}
+	/**
+	 * Create thumbnail event to replace GD thumbnail creation with for example ImageMagick
+	 *
+	 * @event core.thumbnail_create_before
+	 * @var	string	source				Image source path
+	 * @var	string	destination			Thumbnail destination path
+	 * @var	string	mimetype			Image mime type
+	 * @var	float	new_width			Calculated thumbnail width
+	 * @var	float	new_height			Calculated thumbnail height
+	 * @var	bool	thumbnail_created	Set to true to skip default GD thumbnail creation
+	 * @since 3.2.4
+	 */
+	$vars = array(
+		'source',
+		'destination',
+		'mimetype',
+		'new_width',
+		'new_height',
+		'thumbnail_created',
+	);
+	extract($phpbb_dispatcher->trigger_event('core.thumbnail_create_before', compact($vars)));
 
-	if (!$used_imagick)
+	if (!$thumbnail_created)
 	{
 		$type = get_supported_image_types($type);