Changeset 10552 for trunk/admin/include/functions_upload.inc.php

Timestamp:

Apr 21, 2011, 11:55:20 PM (13 years ago)

Author:

patdenice

Message:

feature:2273
Ability to crop thumbnail (fixed size)

File:

• trunk/admin/include/functions_upload.inc.php (modified) (10 diffs)

trunk/admin/include/functions_upload.inc.php

@@ -26 +26 @@
 // add default event handler for image and thumbnail resize
 add_event_handler('upload_image_resize', 'pwg_image_resize', EVENT_HANDLER_PRIORITY_NEUTRAL, 7);
-add_event_handler('upload_thumbnail_resize', 'pwg_image_resize', EVENT_HANDLER_PRIORITY_NEUTRAL, 7);
+add_event_handler('upload_thumbnail_resize', 'pwg_image_resize', EVENT_HANDLER_PRIORITY_NEUTRAL, 9);
 
 function get_upload_form_config()
@@ -89 +89 @@
       'can_be_null' => false,
       'error_message' => l10n('The thumbnail image quality must be a number between %d and %d'),
+      ),
+
+    'thumb_crop' => array(
+      'default' => false,
+      'can_be_null' => false,
+      ),
+
+    'thumb_follow_orientation' => array(
+      'default' => true,
+      'can_be_null' => false,
       ),
   
@@ -327 +337 @@
     $conf['upload_form_thumb_maxheight'],
     $conf['upload_form_thumb_quality'],
-    true
+    true,
+    $conf['upload_form_thumb_crop'],
+    $conf['upload_form_thumb_follow_orientation']
     );
   
@@ -518 +530 @@
 }
 
-function pwg_image_resize($result, $source_filepath, $destination_filepath, $max_width, $max_height, $quality, $strip_metadata=false)
+function pwg_image_resize($result, $source_filepath, $destination_filepath, $max_width, $max_height, $quality, $strip_metadata=false, $crop=false, $follow_orientation=true)
 {
   if ($result !== false)
@@ -530 +542 @@
   if (is_imagick() and $extension != 'gif')
   {
-    return pwg_image_resize_im($source_filepath, $destination_filepath, $max_width, $max_height, $quality, $strip_metadata);
+    return pwg_image_resize_im($source_filepath, $destination_filepath, $max_width, $max_height, $quality, $strip_metadata, $crop, $follow_orientation);
   }
   else
   {
-    return pwg_image_resize_gd($source_filepath, $destination_filepath, $max_width, $max_height, $quality);
-  }
-}
-
-function pwg_image_resize_gd($source_filepath, $destination_filepath, $max_width, $max_height, $quality)
+    return pwg_image_resize_gd($source_filepath, $destination_filepath, $max_width, $max_height, $quality, $crop, $follow_orientation);
+  }
+}
+
+function pwg_image_resize_gd($source_filepath, $destination_filepath, $max_width, $max_height, $quality, $crop=false, $follow_orientation=true)
 {
   if (!function_exists('gd_info'))
@@ -577 +589 @@
   $source_width  = imagesx($source_image); 
   $source_height = imagesy($source_image);
-  
+
+  // Crop
+  if ($crop)
+  {
+    $coord = get_crop_coord($source_width, $source_height, $max_width, $max_height, $follow_orientation);
+  }
+
   $resize_dimensions = get_resize_dimensions($source_width, $source_height, $max_width, $max_height, $rotation);
 
@@ -596 +614 @@
     0,
     0,
-    0,
-    0,
+    $crop ? $coord['x'] : 0,
+    $crop ? $coord['y'] : 0,
     $resize_dimensions['width'],
     $resize_dimensions['height'],
@@ -631 +649 @@
 }
 
-function pwg_image_resize_im($source_filepath, $destination_filepath, $max_width, $max_height, $quality, $strip_metadata=false)
+function pwg_image_resize_im($source_filepath, $destination_filepath, $max_width, $max_height, $quality, $strip_metadata=false, $crop=false, $follow_orientation=true)
 {
   // extension of the picture filename
@@ -647 +665 @@
   $source_width  = $image->getImageWidth();
   $source_height = $image->getImageHeight();
+
+  // Crop
+  if ($crop)
+  {
+    $coord = get_crop_coord($source_width, $source_height, $max_width, $max_height, $follow_orientation);
+    $image->cropImage($source_width, $source_height, $coord['x'], $coord['y']);
+  }
   
   $resize_dimensions = get_resize_dimensions($source_width, $source_height, $max_width, $max_height, $rotation);
@@ -726 +751 @@
 
   return $rotation;
+}
+
+function get_crop_coord(&$source_width, &$source_height, &$max_width, &$max_height, $follow_orientation)
+{
+  $x = 0;
+  $y = 0;
+
+  if ($source_width < $source_height and $follow_orientation)
+  {
+    list($width, $height) = array($max_height, $max_width);
+    $max_width = $width;
+    $max_height = $height;
+  }
+
+  $img_ratio = $source_width / $source_height;
+  $dest_ratio = $max_width / $max_height;
+
+  if($dest_ratio > $img_ratio)
+  {
+    $destHeight = round($source_width * $max_height / $max_width);
+    $y = round(($source_height - $destHeight) / 2 );
+    $source_height = $destHeight;
+  }
+  elseif ($dest_ratio < $img_ratio)
+  {
+    $destWidth = round($source_height * $max_width / $max_height);
+    $x = round(($source_width - $destWidth) / 2 );
+    $source_width = $destWidth;
+  }
+
+  return array('x' => $x, 'y' => $y);
 }