explain why alert-boxes appear

[phpfspot.git] / phpfspot.class.php

diff --git a/phpfspot.class.php b/phpfspot.class.php
index cf0a60c2b0a109b12d34c2b4b4202daeba3916a9..f1b0dc64dbf53702ab52e10c15a6b698dbfb1ca2 100644 (file)
--- a/phpfspot.class.php
+++ b/phpfspot.class.php
@@ -503,7 +503,8 @@ class PHPFSPOT {
       $this->tmpl->assign('image_filename', $this->parse_uri($details['uri'], 'filename'));
 
       $this->tmpl->assign('tags', $this->get_photo_tags($photo));
-      $this->tmpl->assign('current', $current);
+      $this->tmpl->assign('current_page', $this->getCurrentPage($current, $count));
+      $this->tmpl->assign('current_img', $photo);
 
       if($previous_img) {
          $this->tmpl->assign('previous_url', "javascript:showImage(". $previous_img .");");
@@ -952,15 +953,12 @@ class PHPFSPOT {
 
       $count = count($photos);
 
-      if(isset($_SESSION['begin_with']) && $_SESSION['begin_with'] != "")
-         $anchor = $_SESSION['begin_with'];
-
+      /* if all thumbnails should be shown on one page */
       if(!isset($this->cfg->thumbs_per_page) || $this->cfg->thumbs_per_page == 0) {
-
          $begin_with = 0;
          $end_with = $count;
-
       }
+      /* thumbnails should be splitted up in several pages */
       elseif($this->cfg->thumbs_per_page > 0) {
 
          if(!isset($_SESSION['begin_with']) || $_SESSION['begin_with'] == 0) {
@@ -1130,8 +1128,14 @@ class PHPFSPOT {
 
       $this->tmpl->show("photo_index.tpl");
 
-      if(isset($anchor))
-         print "<script language=\"JavaScript\">self.location.hash = '#image". $anchor ."';</script>\n";
+      /* if we are returning to photo index from an photo-view,
+         scroll the window to the last shown photo-thumbnail.
+         after this, unset the last_photo session variable.
+      */
+      if(isset($_SESSION['last_photo'])) {
+         print "<script language=\"JavaScript\">moveToThumb(". $_SESSION['last_photo'] .");</script>\n";
+         unset($_SESSION['last_photo']);
+      }
 
    } // showPhotoIndex()
 
@@ -2464,6 +2468,27 @@ class PHPFSPOT {
 
    } // cleanup_phpfspot_db()
 
+   /**
+    * return first image of the page, the $current photo
+    * lies in.
+    *
+    * this function is used to find out the first photo of the
+    * current page, in which the $current photo lies. this is
+    * used to display the correct photo, when calling showPhotoIndex()
+    * from showImage()
+    */
+   private function getCurrentPage($current, $max)
+   {
+      if(isset($this->cfg->thumbs_per_page) && !empty($this->cfg->thumbs_per_page)) {
+         for($page_start = 0; $page_start <= $max; $page_start+=$this->cfg->thumbs_per_page) {
+            if($current >= $page_start && $current < ($page_start+$this->cfg->thumbs_per_page))
+               return $page_start;
+         }
+      }
+      return 0;
+
+   } // getCurrentPage()
+
 } // class PHPFSPOT
 
 ?>