From 8a1b7a4e5fcafac9b769f9182804e378d59ad3ff Mon Sep 17 00:00:00 2001
From: patdenice <patdenice@piwigo.org>
Date: Sat, 24 Apr 2010 22:22:32 +0000
Subject: Add triggers for image and thumbnail resizing.

git-svn-id: http://piwigo.org/svn/trunk@5957 68402e56-0260-453c-a942-63ccdbb3a9ee
---
 admin/include/functions_upload.inc.php | 18 +++++++++++++++---
 admin/thumbnail.php                    | 20 ++++++++++++++++++--
 2 files changed, 33 insertions(+), 5 deletions(-)

diff --git a/admin/include/functions_upload.inc.php b/admin/include/functions_upload.inc.php
index 39259ad34..fa8944d70 100644
--- a/admin/include/functions_upload.inc.php
+++ b/admin/include/functions_upload.inc.php
@@ -17,6 +17,10 @@ include_once(PHPWG_ROOT_PATH.'admin/include/functions.php');
 //
 // 4) register in database
 
+// add default event handler for image and thumbnail resize
+add_event_handler('upload_image_resize', 'pwg_image_resize', EVENT_HANDLER_PRIORITY_NEUTRAL, 6);
+add_event_handler('upload_thumbnail_resize', 'pwg_image_resize', EVENT_HANDLER_PRIORITY_NEUTRAL, 6);
+
 function add_uploaded_file($source_filepath, $original_filename=null, $categories=null, $level=null)
 {
   global $conf;
@@ -60,7 +64,8 @@ function add_uploaded_file($source_filepath, $original_filename=null, $categorie
     rename($file_path, $high_path);
     $high_infos = pwg_image_infos($high_path);
     
-    pwg_image_resize(
+    trigger_event('upload_image_resize',
+      false,
       $high_path,
       $file_path,
       $conf['upload_form_websize_maxwidth'],
@@ -75,7 +80,8 @@ function add_uploaded_file($source_filepath, $original_filename=null, $categorie
   $thumb_dir = dirname($thumb_path);
   prepare_directory($thumb_dir);
   
-  pwg_image_resize(
+  trigger_event('upload_thumbnail_resize',
+    false,
     $file_path,
     $thumb_path,
     $conf['upload_form_thumb_maxwidth'],
@@ -169,8 +175,14 @@ function need_resize($image_filepath, $max_width, $max_height)
   return false;
 }
 
-function pwg_image_resize($source_filepath, $destination_filepath, $max_width, $max_height, $quality)
+function pwg_image_resize($result, $source_filepath, $destination_filepath, $max_width, $max_height, $quality)
 {
+  if ($result !== false)
+  {
+    //someone hooked us - so we skip
+    return $result;
+  }
+
   if (!function_exists('gd_info'))
   {
     return false;
diff --git a/admin/thumbnail.php b/admin/thumbnail.php
index b945fc7c2..06e14bd2a 100644
--- a/admin/thumbnail.php
+++ b/admin/thumbnail.php
@@ -32,10 +32,16 @@ check_status(ACCESS_ADMINISTRATOR);
 // RatioResizeImg creates a new picture (a thumbnail since it is supposed to
 // be smaller than original picture !) in the sub directory named
 // "thumbnail".
-function RatioResizeImg($path, $newWidth, $newHeight, $tn_ext)
+function RatioResizeImg($info, $path, $newWidth, $newHeight, $tn_ext)
 {
   global $conf, $lang, $page;
 
+  if ($info !== false)
+  {
+    //someone hooked us - so we skip
+    return $info;
+  }
+
   if (!function_exists('gd_info'))
   {
     return;
@@ -157,6 +163,9 @@ if (!function_exists('gd_info'))
   array_push($page['errors'], l10n('GD library is missing'));
 }
 
+// add default event handler for thumbnail resize
+add_event_handler('thumbnail_resize', 'RatioResizeImg', EVENT_HANDLER_PRIORITY_NEUTRAL, 5);
+
 // +-----------------------------------------------------------------------+
 // |                       template initialization                         |
 // +-----------------------------------------------------------------------+
@@ -251,7 +260,14 @@ if (isset($_POST['submit']))
       }
       
       $starttime = get_moment();
-      if ($info = RatioResizeImg($path,$_POST['width'],$_POST['height'],'jpg'))
+      if ($info = trigger_event('thumbnail_resize',
+            false,
+            $path,
+            $_POST['width'],
+            $_POST['height'],
+            'jpg'
+            )
+         )
       {
         $endtime = get_moment();
         $info['time'] = ($endtime - $starttime) * 1000;
-- 
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