Resolved issue 0000807: New slideshow features

git-svn-id: http://piwigo.org/svn/trunk@2218 68402e56-0260-453c-a942-63ccdbb3a9ee

1 files changed, 107 insertions, 1 deletions

diff --git a/include/functions_picture.inc.php b/include/functions_picture.inc.php
index d11574b57..13a09834d 100644
--- a/include/functions_picture.inc.php
+++ b/include/functions_picture.inc.php
@@ -1,7 +1,7 @@
 <?php
 // +-----------------------------------------------------------------------+
 // | PhpWebGallery - a PHP based picture gallery                           |
-// | Copyright (C) 2003-2007 PhpWebGallery Team - http://phpwebgallery.net |
+// | Copyright (C) 2003-2008 PhpWebGallery Team - http://phpwebgallery.net |
 // +-----------------------------------------------------------------------+
 // | file          : $Id$
 // | last update   : $Date$
@@ -223,4 +223,110 @@ function get_download_url($what_part, $element_info)
   return trigger_event( 'get_download_url', $url, $element_info);
 }
 
+/*
+ * get slideshow default params into array
+ *
+ * @param void
+ *
+ * @return slideshow default values into array
+ */
+function get_default_slideshow_params()
+{
+  global $conf;
+
+  return array(
+    'period' => $conf['slideshow_period'],
+    'repeat' => $conf['slideshow_repeat'],
+    'play' => true,
+    );
+}
+
+/*
+ * check and correct slideshow params from array
+ *
+ * @param array of params
+ *
+ * @return slideshow corrected values into array
+ */
+function correct_slideshow_params($params = array())
+{
+  global $conf;
+
+  if ($params['period'] < $conf['slideshow_period_min'])
+  {
+    $params['period'] = $conf['slideshow_period_min'];
+  }
+  else if ($params['period'] > $conf['slideshow_period_max'])
+  {
+    $params['period'] = $conf['slideshow_period_max'];
+  }
+
+  return $params;
+}
+
+/*
+ * Decode slideshow string params into array
+ *
+ * @param string params like ""
+ *
+ * @return slideshow values into array
+ */
+function decode_slideshow_params($encode_params = null)
+{
+  global $conf;
+
+  $result = get_default_slideshow_params();
+
+  if (is_numeric($encode_params))
+  {
+    $result['period'] = $encode_params;
+  }
+  else
+  {
+    $matches = array();
+    if (preg_match_all('/([a-z]+)-(\d+)/', $encode_params, $matches))
+    {
+      $matchcount = count($matches[1]);
+      for ($i = 0; $i < $matchcount; $i++)
+      {
+        $result[$matches[1][$i]] = $matches[2][$i];
+      }
+    }
+
+    if (preg_match_all('/([a-z]+)-(true|false)/', $encode_params, $matches))
+    {
+      $matchcount = count($matches[1]);
+      for ($i = 0; $i < $matchcount; $i++)
+      {
+        $result[$matches[1][$i]] = get_boolean($matches[2][$i]);
+      }
+    }
+  }
+
+  return correct_slideshow_params($result);
+}
+
+/*
+ * Encode slideshow array params into array
+ *
+ * @param array params
+ *
+ * @return slideshow values into string
+ */
+function encode_slideshow_params($decode_params = array())
+{
+  global $conf;
+
+  $params = array_diff_assoc(correct_slideshow_params($decode_params), get_default_slideshow_params());
+  $result = '';
+
+  foreach ($params as $name => $value)
+  {
+    // boolean_to_string return $value, if it's not a bool
+    $result .= '+'.$name.'-'.boolean_to_string($value);
+  }
+
+  return $result;
+}
+
 ?>