feature 2548 multisize - custom sizes restricted to those requested by theme/plugin

code refacto

git-svn-id: http://piwigo.org/svn/trunk@13021 68402e56-0260-453c-a942-63ccdbb3a9ee

4 files changed, 59 insertions, 82 deletions

diff --git a/include/derivative_params.inc.php b/include/derivative_params.inc.php
index 30497639f..ba1b1dce7 100644
--- a/include/derivative_params.inc.php
+++ b/include/derivative_params.inc.php
@@ -33,21 +33,20 @@ function size_to_url($s)
   return $s[0].'x'.$s[1];
 }
 
-function url_to_size($s)
+function size_equals($s1, $s2)
 {
-  $pos = strpos($s, 'x');
-  if ($pos===false)
-  {
-    return array((int)$s, (int)$s);
-  }
-  return array((int)substr($s,0,$pos), (int)substr($s,$pos+1));
+  return ($s1[0]==$s2[0] && $s1[1]==$s2[1]);
 }
 
-function size_equals($s1, $s2)
+function char_to_fraction($c)
 {
-  return ($s1[0]==$s2[0] && $s1[1]==$s2[1]);
+	return (ord($c) - ord('a'))/25;
 }
 
+function fraction_to_char($f)
+{
+	return ord('a') + round($f*25);
+}
 
 /** small utility to manipulate a 'rectangle'*/
 final class ImageRect
@@ -79,8 +78,8 @@ final class ImageRect
 
     if (!empty($coi))
     {
-      $coil = floor($this->r * (ord($coi[0]) - ord('a'))/25);
-      $coir = ceil($this->r * (ord($coi[2]) - ord('a'))/25);
+      $coil = floor($this->r * char_to_fraction($coi[0]));
+      $coir = ceil($this->r * char_to_fraction($coi[2]));
       $availableL = $coil > $this->l ? $coil - $this->l : 0;
       $availableR = $coir < $this->r ? $this->r - $coir : 0;
       if ($availableL + $availableR <= $pixels)
@@ -115,8 +114,8 @@ final class ImageRect
 
     if (!empty($coi))
     {
-      $coit = floor($this->b * (ord($coi[1]) - ord('a'))/25);
-      $coib = ceil($this->b * (ord($coi[3]) - ord('a'))/25);
+      $coit = floor($this->b * char_to_fraction($coi[1]));
+      $coib = ceil($this->b * char_to_fraction($coi[3]));
       $availableT = $coit > $this->t ? $coit - $this->t : 0;
       $availableB = $coib < $this->b ? $this->b - $coib : 0;
       if ($availableT + $availableB <= $pixels)
@@ -179,39 +178,11 @@ final class SizingParams
       else
       {
         $tokens[] = size_to_url($this->ideal_size);
-        $tokens[] = sprintf('%02x', round(100*$this->max_crop) );
+        $tokens[] = fraction_to_char($this->max_crop);
         $tokens[] = size_to_url($this->min_size);
       }
   }
 
-  static function from_url_tokens($tokens)
-  {
-    if (count($tokens)<1)
-      throw new Exception('Empty array while parsing Sizing');
-    $token = array_shift($tokens);
-    if ($token[0]=='s')
-    {
-      return new SizingParams( url_to_size( substr($token,1) ) );
-    }
-    if ($token[0]=='e')
-    {
-      $s = url_to_size( substr($token,1) );
-      return new SizingParams($s, 1, $s);
-    }
-
-    $ideal_size = url_to_size( $token );
-    if (count($tokens)<2)
-      throw new Exception('Sizing arr');
-
-    $token = array_shift($tokens);
-    $crop = hexdec($token) / 100;
-
-    $token = array_shift($tokens);
-    $min_size = url_to_size( $token );
-    return new SizingParams($ideal_size, $crop, $min_size);
-  }
-
-
   function compute($in_size, $coi, &$crop_rect, &$scale_size)
   {
     $destCrop = new ImageRect($in_size);
@@ -302,13 +273,6 @@ final class DerivativeParams
     $this->sizing->add_url_tokens($tokens);
   }
 
-  static function from_url_tokens($tokens)
-  {
-    $sizing = SizingParams::from_url_tokens($tokens);
-    $ret = new DerivativeParams($sizing);
-    return $ret;
-  }
-
   function compute_final_size($in_size, $coi)
   {
     $this->sizing->compute( $in_size, $coi, $crop_rect, $scale_size );
diff --git a/include/derivative_std_params.inc.php b/include/derivative_std_params.inc.php
index 9377b4c67..773866dec 100644
--- a/include/derivative_std_params.inc.php
+++ b/include/derivative_std_params.inc.php
@@ -46,6 +46,7 @@ final class ImageStdParams
   private static $type_map = array();
   private static $undefined_type_map = array();
   private static $watermark;
+  public static $custom = array();
 
   static function get_all_types()
   {
@@ -71,6 +72,22 @@ final class ImageStdParams
   {
     return self::$all_type_map[$type];
   }
+  
+  static function get_custom($w, $h, $crop=0, $minw=null, $minh=null)
+  {
+    $params = new DerivativeParams( new SizingParams( array($w,$h), $crop, array($minw,$minh)) );
+    self::apply_global($params);
+
+    $key = array();
+    $params->add_url_tokens($key);
+    $key = implode('_',$key);
+    if ( @self::$custom[$key] < time() - 24*3600)
+    {
+      self::$custom[$key] = time();
+      self::save();
+    }
+    return $params;
+  }
 
   static function get_watermark()
   {
@@ -103,6 +120,8 @@ final class ImageStdParams
       self::$type_map = $arr['d'];
       self::$watermark = @$arr['w'];
       if (!self::$watermark) self::$watermark = new WatermarkParams();
+      self::$custom = @$arr['c'];
+      if (!self::$custom) self::$custom = array();
     }
     else
     {
@@ -118,16 +137,22 @@ final class ImageStdParams
   
   static function set_and_save($map)
   {
-    global $conf;
     self::$type_map = $map;
+    self::save();
+    self::build_maps();
+  }
+
+  static function save()
+  {
+    global $conf;
 
     $ser = serialize( array(
       'd' => self::$type_map,
       'w' => self::$watermark,
+      'c' => self::$custom,
       ) );
     conf_update_param('derivatives', addslashes($ser) );
     file_put_contents(PHPWG_ROOT_PATH.$conf['data_location'].'derivatives.dat', $ser);
-    self::build_maps();
   }
 
   private static function make_default()
@@ -142,7 +167,7 @@ final class ImageStdParams
     self::$type_map[IMG_XXLARGE] = new DerivativeParams( SizingParams::classic(1200,900) );
   }
 
-  public static function apply_global($params)
+  static function apply_global($params)
   {
     if (!empty(self::$watermark->file) &&
         (self::$watermark->min_size[0]<=$params->sizing->ideal_size[0]
diff --git a/include/picture_comment.inc.php b/include/picture_comment.inc.php
index da674482f..7432aa8d5 100644
--- a/include/picture_comment.inc.php
+++ b/include/picture_comment.inc.php
@@ -126,26 +126,12 @@ SELECT
   if ($row['nb_comments'] > 0)
   {
     // comments order (get, session, conf)
-    if (!empty($_GET['comments_order']))
+    if (!empty($_GET['comments_order']) && in_array(strtoupper($_GET['comments_order']), array('ASC', 'DESC')))
     {
-      if (in_array(strtoupper($_GET['comments_order']), array('ASC', 'DESC')))
-      {
-        $comments_order = $_GET['comments_order'];
-        pwg_set_session_var('comments_order', $comments_order);
-      }
-      else
-      {
-        $comments_order = $conf['comments_order'];
-      }
-    }
-    else if (pwg_get_session_var('comments_order') !== null)
-    {
-      $comments_order = pwg_get_session_var('comments_order');
-    }
-    else
-    {
-      $comments_order = $conf['comments_order'];
+      pwg_set_session_var('comments_order', $_GET['comments_order']);
     }
+    $comments_order = pwg_get_session_var('comments_order', $conf['comments_order']);
+
     $template->assign(array(
       'COMMENTS_ORDER_URL' => duplicate_picture_url().'&amp;comments_order='.($comments_order == 'ASC' ? 'DESC' : 'ASC'),
       'COMMENTS_ORDER_TITLE' => $comments_order == 'ASC' ? l10n('ascending') : l10n('descending'),
diff --git a/include/template.class.php b/include/template.class.php
index 9e06b5d2d..5596c2ec9 100644
--- a/include/template.class.php
+++ b/include/template.class.php
@@ -559,31 +559,33 @@ class Template {
     !empty($params['width']) or fatal_error('define_derviative missing width');
     !empty($params['height']) or fatal_error('define_derviative missing height');
 
-    $derivative = new DerivativeParams( SizingParams::classic( intval($params['width']), intval($params['height'])) );
+    $w = intval($params['width']);
+    $h = intval($params['height']);
+    $crop = 0;
+    $minw=null;
+    $minh=null;
+    
     if (isset($params['crop']))
     {
       if (is_bool($params['crop']))
       {
-        $derivative->sizing->max_crop = $params['crop'] ? 1:0;
+        $crop = $params['crop'] ? 1:0;
       }
       else
       {
-        $derivative->sizing->max_crop = round($params['crop']/100, 2);
+        $crop = round($params['crop']/100, 2);
       }
 
-      if ($derivative->sizing->max_crop)
+      if ($crop)
       {
-        $minw = empty($params['min_width']) ? $derivative->max_width() : intval($params['min_width']);
-        $minw <= $derivative->max_width() or fatal_error('define_derviative invalid min_width');
-        $minh = empty($params['min_height']) ? $derivative->max_height() : intval($params['min_height']);
-        $minh <= $derivative->max_height() or fatal_error('define_derviative invalid min_height');
-
-        $derivative->sizing->min_size = array($minw, $minh);
+        $minw = empty($params['min_width']) ? $w : intval($params['min_width']);
+        $minw <= $w or fatal_error('define_derviative invalid min_width');
+        $minh = empty($params['min_height']) ? $h : intval($params['min_height']);
+        $minh <= $h or fatal_error('define_derviative invalid min_height');
       }
     }
 
-    ImageStdParams::apply_global($derivative);
-    $smarty->assign( $params['name'], $derivative);
+    $smarty->assign( $params['name'], ImageStdParams::get_custom($w, $h, $crop, $minw, $minh) );
   }
 
    /**