- big update in thumbnail creation process : form is always shown with the

comprehensive list of pictures without thumbnails (no matter the
  directory) unless there are no thumbnail missing.

- thumbnail creation process : form parameters are saved between 2 thumbnail
  generations thanks to new process

- thumbnail creation process : can ask to create all missing thumbnails

- thumbnail creation process : default thumbnail width and height are
  configured in include/config.inc.php

- thumbnail creation process : errors due to no write access directories are
  catched


git-svn-id: http://piwigo.org/svn/trunk@695 68402e56-0260-453c-a942-63ccdbb3a9ee

admin/thumbnail.php

@@ -26,104 +26,30 @@
 // +-----------------------------------------------------------------------+
 include_once( PHPWG_ROOT_PATH.'admin/include/isadmin.inc.php' );
 //------------------------------------------------------------------- functions
-// get_subdirs returns an array containing all sub directory names,
-// excepting : '.', '..' and 'thumbnail'.
-function get_subdirs( $dir )
-{
-  $sub_dirs = array();
-  if ( $opendir = opendir( $dir ) )
-  {
-    while ( $file = readdir( $opendir ) )
-    {
-      if ($file != 'thumbnail'
-          and $file != 'pwg_representative'
-          and $file != 'pwg_high'
-          and $file != '.'
-          and $file != '..'
-          and is_dir($dir.'/'.$file))
-      {
-        array_push( $sub_dirs, $file );
-      }
-    }
-  }
-  return $sub_dirs;
-}
-
-// get_images_without_thumbnail returns an array with all the picture names
-// that don't have associated thumbnail in the directory. Each picture name
-// is associated with the width, heigh and filesize of the picture.
-function get_images_without_thumbnail( $dir )
-{
-  $images = array();
-  if ( $opendir = opendir( $dir ) )
-  {
-    while ( $file = readdir( $opendir ) )
-    {
-      $path = $dir.'/'.$file;
-      if ( is_image( $path, true ) )
-      {
-        if ( !TN_exists( $dir, $file ) )
-        {
-          $image_infos = getimagesize( $path );
-          $size = floor( filesize( $path ) / 1024 ). ' KB';
-          array_push( $images, array( 'name' => $file,
-                                      'width' => $image_infos[0],
-                                      'height' => $image_infos[1],
-                                      'size' => $size ) );
-        }
-      }
-    }
-  }
-  return $images;
-}
-
-// phpwg_scandir scans a dir to find pictures without thumbnails. Once found,
-// creation of the thumbnails (RatioResizeImg). Only the first $_POST['n']
-// pictures without thumbnails are treated.
-// scandir returns an array with the generation time of each thumbnail (for
-// statistics purpose)
-function phpwg_scandir( $dir, $width, $height )
-{
-  global $conf;
-  $stats = array();
-  if ( $opendir = opendir( $dir ) )
-  {
-    while ( $file = readdir ( $opendir ) )
-    {
-      $path = $dir.'/'.$file;
-      if ( is_image( $path, true ) )
-      {
-        if ( count( $stats ) < $_POST['n'] and !TN_exists( $dir, $file ) )
-        {
-          $starttime = get_moment();
-          $info = RatioResizeImg( $file, $width, $height, $dir.'/', 'jpg' );
-          $endtime = get_moment();
-          $info['time'] = ( $endtime - $starttime ) * 1000;
-          array_push( $stats, $info );
-        }
-      }
-    }
-  }
-  return $stats;
-}
-
 // 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( $filename, $newWidth, $newHeight, $path, $tn_ext )
+function RatioResizeImg($path, $newWidth, $newHeight, $tn_ext)
 {
-  global $conf, $lang;
-  // full path to picture
-  $filepath = $path.$filename;
+  global $conf, $lang, $errors;
+
+  $filename = basename($path);
+  $dirname = dirname($path);
+  
   // extension of the picture filename
-  $extension = get_extension( $filepath );
-  switch( $extension )
+  $extension = get_extension($filename);
+
+  if ($extension == 'jpg' or $extension == 'JPG')
   {
-  case 'jpg': $srcImage = @imagecreatefromjpeg( $filepath ); break; 
-  case 'JPG': $srcImage = @imagecreatefromjpeg( $filepath ); break; 
-  case 'png': $srcImage = @imagecreatefrompng(  $filepath ); break; 
-  case 'PNG': $srcImage = @imagecreatefrompng(  $filepath ); break; 
-  default : unset( $extension ); break;
+    $srcImage = @imagecreatefromjpeg($path);
+  }
+  else if ($extension == 'png' or $extension == 'PNG')
+  {
+    $srcImage = @imagecreatefrompng($path);
+  }
+  else
+  {
+    unset($extension);
   }
 		
   if ( isset( $srcImage ) )
@@ -168,31 +94,38 @@ function RatioResizeImg( $filename, $newWidth, $newHeight, $path, $tn_ext )
       imagecopyresized( $destImage, $srcImage, 0, 0, 0, 0,
                         $destWidth,$destHeight,$srcWidth,$srcHeight );
     }
-			
-			
-    if( !is_dir( $path.'thumbnail' ) )
+    
+    $tndir = $dirname.'/thumbnail';
+    if (!is_dir($tndir))
     {
-      umask( 0000 );
-      mkdir( $path.'thumbnail', 0777 );
+      if (!is_writable($dirname))
+      {
+        array_push($errors, '['.$dirname.'] : '.$lang['no_write_access']);
+        return false;
+      }
+      umask(0000);
+      mkdir($tndir, 0777);
     }
-    $dest_file = $path.'thumbnail/'.$conf['prefix_thumbnail'];
-    $dest_file.= get_filename_wo_extension( $filename );
+    
+    $dest_file = $tndir.'/'.$conf['prefix_thumbnail'];
+    $dest_file.= get_filename_wo_extension($filename);
     $dest_file.= '.'.$tn_ext;
-			
+    
     // creation and backup of final picture
-    imagejpeg( $destImage, $dest_file );
+    if (!is_writable($tndir))
+    {
+      array_push($errors, '['.$tndir.'] : '.$lang['no_write_access']);
+      return false;
+    }
+    imagejpeg($destImage, $dest_file);
     // freeing memory ressources
     imagedestroy( $srcImage );
     imagedestroy( $destImage );
-			
-    list( $width,$height ) = getimagesize( $filepath );
-    $size = floor( filesize( $filepath ) / 1024 ).' KB';
-    list( $tn_width,$tn_height ) = getimagesize( $dest_file );
-    $tn_size = floor( filesize( $dest_file ) / 1024 ).' KB';
-    $info = array( 'file'      => $filename,
-                   'width'     => $width,
-                   'height'    => $height,
-                   'size'      => $size,
+    
+    list($tn_width, $tn_height) = getimagesize($dest_file);
+    $tn_size = floor(filesize($dest_file) / 1024).' KB';
+    
+    $info = array( 'path'      => $path,
                    'tn_file'   => $dest_file,
                    'tn_width'  => $tn_width,
                    'tn_height' => $tn_height,
@@ -218,36 +151,17 @@ function RatioResizeImg( $filename, $newWidth, $newHeight, $path, $tn_ext )
 $errors = array();
 $pictures = array();
 $stats = array();
-
-if ( isset( $_GET['dir'] ) &&  isset( $_POST['submit'] ))
-{
-  $pictures = get_images_without_thumbnail( $_GET['dir'] );
-  // checking criteria
-  if ( !ereg( "^[0-9]{2,3}$", $_POST['width'] ) or $_POST['width'] < 10 )
-  {
-    array_push( $errors, $lang['tn_err_width'].' 10' );
-  }
-  if ( !ereg( "^[0-9]{2,3}$", $_POST['height'] ) or $_POST['height'] < 10 )
-  {
-    array_push( $errors, $lang['tn_err_height'].' 10' );
-  }
-  
-  // picture miniaturization
-  if ( count( $errors ) == 0 )
-  {
-    $stats = phpwg_scandir( $_GET['dir'], $_POST['width'], $_POST['height'] );
-  }
-}
-		
-//----------------------------------------------------- template initialization
+// +-----------------------------------------------------------------------+
+// |                       template initialization                         |
+// +-----------------------------------------------------------------------+
 $template->set_filenames( array('thumbnail'=>'admin/thumbnail.tpl') );
 
 $template->assign_vars(array(
   'L_THUMBNAIL_TITLE'=>$lang['tn_dirs_title'],
-  'L_UNLINK'=>$lang['tn_dirs_alone'],
+  'L_UNLINK'=>$lang['tn_no_missing'],
   'L_MISSING_THUMBNAILS'=>$lang['tn_dirs_alone'],
   'L_RESULTS'=>$lang['tn_results_title'],
-  'L_TN_PICTURE'=>$lang['tn_picture'],
+  'L_PATH'=>$lang['path'],
   'L_FILESIZE'=>$lang['filesize'],
   'L_WIDTH'=>$lang['tn_width'],
   'L_HEIGHT'=>$lang['tn_height'],
@@ -273,182 +187,223 @@ $template->assign_vars(array(
   
   'T_STYLE'=>$user['template']
   ));
+// +-----------------------------------------------------------------------+
+// |                   search pictures without thumbnails                  |
+// +-----------------------------------------------------------------------+
+$wo_thumbnails = array();
+$thumbnalized = array();
 
-//----------------------------------------------------- miniaturization results
-if ( sizeof( $errors ) != 0 )
+// what is the directory to search in ?
+$query = '
+SELECT galleries_url
+  FROM '.SITES_TABLE.'
+  WHERE id = 1
+;';
+list($galleries_url) = mysql_fetch_array(pwg_query($query));
+$basedir = preg_replace('#/*$#', '', $galleries_url);
+
+$fs = get_fs($basedir);
+// because isset is one hundred time faster than in_array
+$fs['thumbnails'] = array_flip($fs['thumbnails']);
+
+foreach ($fs['elements'] as $path)
 {
-  $template->assign_block_vars('errors',array());
-  for ( $i = 0; $i < sizeof( $errors ); $i++ )
+  // only pictures need thumbnails
+  if (in_array(get_extension($path), $conf['picture_ext']))
   {
-    $template->assign_block_vars('errors.error',array('ERROR'=>$errors[$i]));
-  }
-}
-else if (isset($_GET['dir']) and isset($_POST['submit']) and !empty($stats))
-{
-  $times = array();
-  foreach ($stats as $stat)
-  {
-    array_push( $times, $stat['time'] );
-  }
-  $sum=array_sum( $times );
-  $average = $sum/sizeof($times);
-  sort( $times, SORT_NUMERIC );
-  $max = array_pop($times);
-  $min = array_shift( $times);
-  
-  $template->assign_block_vars(
-    'results',
-    array(
-      'TN_NB'=>count( $stats ),
-      'TN_TOTAL'=>number_format( $sum, 2, '.', ' ').' ms',
-      'TN_MAX'=>number_format( $max, 2, '.', ' ').' ms',
-      'TN_MIN'=>number_format( $min, 2, '.', ' ').' ms',
-      'TN_AVERAGE'=>number_format( $average, 2, '.', ' ').' ms'
-      ));
-  if (!count($pictures))
-  {
-    $template->assign_block_vars('warning',array());
-  }
-  
-  foreach ($stats as $i => $stat) 
-  {
-    $class = ($i % 2)? 'row1':'row2';
-    $color='';
-    if ($stat['time'] == $max)
+    $dirname = dirname($path);
+    $filename = basename($path);
+    // searching the element
+    $filename_wo_ext = get_filename_wo_extension($filename);
+    $tn_ext = '';
+    $base_test = $dirname.'/thumbnail/';
+    $base_test.= $conf['prefix_thumbnail'].$filename_wo_ext.'.';
+    foreach ($conf['picture_ext'] as $ext)
     {
-      $color = 'red';
-    }
-    else if ($stat['time'] == $min)
-    {
-      $color = '#33FF00';
+      if (isset($fs['thumbnails'][$base_test.$ext]))
+      {
+        $tn_ext = $ext;
+        break;
+      }
     }
     
-    $template->assign_block_vars(
-      'results.picture',
-      array(
-        'NB_IMG'=>($i+1),
-        'FILE_IMG'=>$stat['file'],
-        'FILESIZE_IMG'=>$stat['size'],
-        'WIDTH_IMG'=>$stat['width'],
-        'HEIGHT_IMG'=>$stat['height'],
-        'TN_FILE_IMG'=>$stat['tn_file'],
-        'TN_FILESIZE_IMG'=>$stat['tn_size'],
-        'TN_WIDTH_IMG'=>$stat['tn_width'],
-        'TN_HEIGHT_IMG'=>$stat['tn_height'],
-        'GEN_TIME'=>number_format( $stat['time'], 2, '.', ' ').' ms',
-        
-        'T_COLOR'=>$color,
-        'T_CLASS'=>$class
-        ));
+    if (empty($tn_ext))
+    {
+      array_push($wo_thumbnails, $path);
+    }
   }
 }
-//-------------------------------------------------- miniaturization parameters
-if (isset($_GET['dir']) and !sizeof($pictures))
+// +-----------------------------------------------------------------------+
+// |                         thumbnails creation                           |
+// +-----------------------------------------------------------------------+
+if (isset($_POST['submit']))
 {
-  $form_url = PHPWG_ROOT_PATH.'admin.php?page=thumbnail&amp;dir='.$_GET['dir'];
-  $gd = !empty( $_POST['gd'] )?$_POST['gd']:2;
-  $width = !empty( $_POST['width'] )?$_POST['width']:128;
-  $height = !empty( $_POST['height'] )?$_POST['height']:96;
+  $errors = array();
+  $times = array();
+  $infos = array();
+  
+  // checking criteria
+  if (!ereg('^[0-9]{2,3}$', $_POST['width']) or $_POST['width'] < 10)
+  {
+    array_push($errors, $lang['tn_err_width'].' 10');
+  }
+  if (!ereg('^[0-9]{2,3}$', $_POST['height']) or $_POST['height'] < 10)
+  {
+    array_push($errors, $lang['tn_err_height'].' 10');
+  }
+  
+  // picture miniaturization
+  if (count($errors) == 0)
+  {
+    $num = 1;
+    foreach ($wo_thumbnails as $path)
+    {
+      if (is_numeric($_POST['n']) and $num > $_POST['n'])
+      {
+        break;
+      }
+      
+      $starttime = get_moment();
+      if ($info = RatioResizeImg($path,$_POST['width'],$_POST['height'],'jpg'))
+      {
+        $endtime = get_moment();
+        $info['time'] = ($endtime - $starttime) * 1000;
+        array_push($infos, $info);
+        array_push($times, $info['time']);
+        array_push($thumbnalized, $path);
+        $num++;
+      }
+      else
+      {
+        break;
+      }
+    }
+
+    if (count($infos) > 0)
+    {
+      $sum = array_sum($times);
+      $average = $sum / count($times);
+      sort($times, SORT_NUMERIC);
+      $max = array_pop($times);
+      if (count($thumbnalized) == 1)
+      {
+        $min = $max;
+      }
+      else
+      {
+        $min = array_shift($times);
+      }
+      
+      $template->assign_block_vars(
+        'results',
+        array(
+          'TN_NB'=>count($infos),
+          'TN_TOTAL'=>number_format($sum, 2, '.', ' ').' ms',
+          'TN_MAX'=>number_format($max, 2, '.', ' ').' ms',
+          'TN_MIN'=>number_format($min, 2, '.', ' ').' ms',
+          'TN_AVERAGE'=>number_format($average, 2, '.', ' ').' ms'
+          ));
+      
+      foreach ($infos as $i => $info)
+      {
+        if ($info['time'] == $max)
+        {
+          $class = 'worst_gen_time';
+        }
+        else if ($info['time'] == $min)
+        {
+          $class = 'best_gen_time';
+        }
+        else
+        {
+          $class = '';
+        }
+        
+        $template->assign_block_vars(
+          'results.picture',
+          array(
+            'PATH'=>$info['path'],
+            'TN_FILE_IMG'=>$info['tn_file'],
+            'TN_FILESIZE_IMG'=>$info['tn_size'],
+            'TN_WIDTH_IMG'=>$info['tn_width'],
+            'TN_HEIGHT_IMG'=>$info['tn_height'],
+            'GEN_TIME'=>number_format($info['time'], 2, '.', ' ').' ms',
+            
+            'T_CLASS'=>$class
+            ));
+      }
+    }
+  }
+}
+// +-----------------------------------------------------------------------+
+// |                            errors display                             |
+// +-----------------------------------------------------------------------+
+if (count($errors) != 0)
+{
+  $template->assign_block_vars('errors',array());
+  foreach ($errors as $error)
+  {
+    $template->assign_block_vars('errors.error',array('ERROR'=>$error));
+  }
+}
+// +-----------------------------------------------------------------------+
+// |             form & pictures without thumbnails display                |
+// +-----------------------------------------------------------------------+
+$remainings = array_diff($wo_thumbnails, $thumbnalized);
+
+if (count($remainings) > 0)
+{
+  $form_url = PHPWG_ROOT_PATH.'admin.php?page=thumbnail';
+  $gd = !empty($_POST['gd']) ? $_POST['gd'] : 2;
+  $width = !empty($_POST['width']) ? $_POST['width'] : $conf['tn_width'];
+  $height = !empty($_POST['height']) ? $_POST['height'] : $conf['tn_height'];
+  $n = !empty($_POST['n']) ? $_POST['n'] : 5;
+  
   $gdlabel = 'GD'.$gd.'_CHECKED';
+  $nlabel = 'n_'.$n.'_CHECKED';
   
   $template->assign_block_vars(
     'params',
     array(
       'F_ACTION'=>add_session_id($form_url),
       $gdlabel=>'checked="checked"',
+      $nlabel=>'checked="checked"',
       'WIDTH_TN'=>$width,
       'HEIGHT_TN'=>$height
       ));
-//---------------------------------------------------------- remaining pictures
-  $pictures = get_images_without_thumbnail( $_GET['dir'] );
+
   $template->assign_block_vars(
     'remainings',
-    array('TOTAL_IMG'=>count($pictures)));
+    array('TOTAL_IMG'=>count($remainings)));
 
-  foreach ($pictures as $i => $picture)
+  $num = 1;
+  foreach ($remainings as $path)
   {
-    $class = ($i % 2)? 'row1':'row2';
+    $class = ($num % 2) ? 'row1' : 'row2';
+    list($width, $height) = getimagesize($path);
+    $size = floor(filesize($path) / 1024).' KB';
+
     $template->assign_block_vars(
       'remainings.remaining',
       array(
-        'NB_IMG'=>($i+1),
-        'FILE_TN'=>$picture['name'],
-        'FILESIZE_IMG'=>$picture['size'],
-        'WIDTH_IMG'=>$picture['width'],
-        'HEIGHT_IMG'=>$picture['height'],
-	  
+        'NB_IMG'=>($num),
+        'PATH'=>$path,
+        'FILESIZE_IMG'=>$size,
+        'WIDTH_IMG'=>$width,
+        'HEIGHT_IMG'=>$height,
+        
         'T_CLASS'=>$class
         ));
+
+    $num++;
   }
 }
-//-------------------------------------------------------------- directory list
 else
 {
-  $wo_thumbnails = array();
-  
-  // what is the directory to search in ?
-  $query = '
-SELECT galleries_url
-  FROM '.SITES_TABLE.'
-  WHERE id = 1
-;';
-  list($galleries_url) = mysql_fetch_array(pwg_query($query));
-  $basedir = preg_replace('#/*$#', '', $galleries_url);
-
-  $fs = get_fs($basedir);
-  // because isset is one hundred time faster than in_array
-  $fs['thumbnails'] = array_flip($fs['thumbnails']);
-
-  foreach ($fs['elements'] as $path)
-  {
-    // only pictures need thumbnails
-    if (in_array(get_extension($path), $conf['picture_ext']))
-    {
-      $dirname = dirname($path);
-      $filename = basename($path);
-      // searching the element
-      $filename_wo_ext = get_filename_wo_extension($filename);
-      $tn_ext = '';
-      $base_test = $dirname.'/thumbnail/';
-      $base_test.= $conf['prefix_thumbnail'].$filename_wo_ext.'.';
-      foreach ($conf['picture_ext'] as $ext)
-      {
-        if (isset($fs['thumbnails'][$base_test.$ext]))
-        {
-          $tn_ext = $ext;
-          break;
-        }
-      }
-      
-      if (empty($tn_ext))
-      {
-        if (!isset($wo_thumbnails[$dirname]))
-        {
-          $wo_thumbnails[$dirname] = 1;
-        }
-        else
-        {
-          $wo_thumbnails[$dirname]++;
-        }
-      }
-    }
-  }
-
-  if (count($wo_thumbnails) > 0)
-  {
-    $template->assign_block_vars('directory_list', array());
-    foreach ($wo_thumbnails as $directory => $nb_missing)
-    {
-      $url = PHPWG_ROOT_PATH.'admin.php?page=thumbnail&amp;dir='.$directory;
-      
-      $template->assign_block_vars(
-        'directory_list.directory',
-        array(
-          'DIRECTORY'=>$directory,
-          'URL'=>add_session_id($url),
-          'NB_MISSING'=>$nb_missing));
-    }
-  }
+  $template->assign_block_vars('warning', array());
 }
+// +-----------------------------------------------------------------------+
+// |                           return to admin                             |
+// +-----------------------------------------------------------------------+
 $template->assign_var_from_handle('ADMIN_CONTENT', 'thumbnail');
 ?>