new photo index icon

[phpfspot.git] / phpfspot.class.php

diff --git a/phpfspot.class.php b/phpfspot.class.php
index 42d3075a2d665bd22bbc8b40e09c6ad505496548..af51752f8f0b56cabe8b090b7b350de7d789b644 100644 (file)
--- a/phpfspot.class.php
+++ b/phpfspot.class.php
@@ -144,13 +144,52 @@ class PHPFSPOT {
 
    public function getAvailableTags()
    {
-      foreach($this->avail_tags as $tag)
-      {
-         if(isset($_SESSION['selected_tags']) && in_array($tag, $_SESSION['selected_tags']))
+      $result = $this->db->db_query("
+         SELECT tag_id as id, count(tag_id) as quantity
+         FROM photo_tags
+         GROUP BY tag_id
+         ORDER BY tag_id ASC
+      ");
+
+      $tags = Array();
+
+      while($row = $this->db->db_fetch_object($result)) {
+         $tags[$row['id']] = $row['quantity'];
+      }
+
+      // change these font sizes if you will
+      $max_size = 125; // max font size in %
+      $min_size = 75; // min font size in %
+
+      // get the largest and smallest array values
+      $max_qty = max(array_values($tags));
+      $min_qty = min(array_values($tags));
+
+      // find the range of values
+      $spread = $max_qty - $min_qty;
+      if (0 == $spread) { // we don't want to divide by zero
+         $spread = 1;
+      }
+
+      // determine the font-size increment
+      // this is the increase per tag quantity (times used)
+      $step = ($max_size - $min_size)/($spread);
+
+      // loop through our tag array
+      foreach ($tags as $key => $value) {
+
+         if(isset($_SESSION['selected_tags']) && in_array($key, $_SESSION['selected_tags']))
             continue;
 
-         // return all available (= not selected) tags
-         print "<a href=\"javascript:Tags('add', ". $tag .");\">". $this->tags[$tag] ."</a>&nbsp;";
+          // calculate CSS font-size
+          // find the $value in excess of $min_qty
+          // multiply by the font-size increment ($size)
+          // and add the $min_size set above
+         $size = $min_size + (($value - $min_qty) * $step);
+          // uncomment if you want sizes in whole %:
+          // $size = ceil($size);
+
+         print "<a href=\"javascript:Tags('add', ". $key .");\" class=\"tag\" style=\"font-size: ". $size ."%;\">". $this->tags[$key] ."</a>&nbsp;";
 
       }
 
@@ -162,7 +201,7 @@ class PHPFSPOT {
       {
          // return all selected tags
          if(isset($_SESSION['selected_tags']) && in_array($tag, $_SESSION['selected_tags'])) {
-            print "<a href=\"javascript:Tags('del', ". $tag .");\">". $this->tags[$tag] ."</a>&nbsp;";
+            print "<a href=\"javascript:Tags('del', ". $tag .");\" class=\"tag\">". $this->tags[$tag] ."</a>&nbsp;";
          }
 
       }
@@ -183,6 +222,7 @@ class PHPFSPOT {
       if(isset($_SESSION['selected_tags'])) {
          $key = array_search($tag, $_SESSION['selected_tags']);
          unset($_SESSION['selected_tags'][$key]);
+         sort($_SESSION['selected_tags']);
       }
 
    } // delTag()
@@ -231,38 +271,40 @@ class PHPFSPOT {
                WHERE pt.tag_id IN (". $selected .")
                ORDER BY p.time ASC
             ");
-            while($row = $this->db->db_fetch_object($result)) {
-               array_push($tagged_photos, $row['photo_id']);
-            }
          }
          elseif($_SESSION['tag_condition'] == 'and') {
-            $result = $this->db->db_query("
-               SELECT DISTINCT photo_id, tag_id
-                  FROM photo_tags pt
-               INNER JOIN photos p
-                  on p.id=pt.photo_id
-               WHERE pt.tag_id IN (". $selected .")
-               ORDER BY p.time ASC
-            ");
 
-            /* now we need to check if each object fulfills the condition
-               and has all the selected tags assigned
+            /* Join together a table looking like
+
+               pt1.photo_id pt1.tag_id pt2.photo_id pt2.tag_id ...
+
+               so the query can quickly return all images matching the
+               selected tags in an AND condition
+
             */
-            $match_object = Array();
-            $matches_needed = count($_SESSION['selected_tags']);
-            while($row = $this->db->db_fetch_object($result)) {
-               /* set the counter for this object */
-               if(!isset($match_object[$row['photo_id']]))
-                  $match_object[$row['photo_id']] = $matches_needed;
-               
-               /* we have a match? decrement the counter */
-               if(in_array($row['tag_id'], $_SESSION['selected_tags']))
-                  $match_object[$row['photo_id']]--;
 
-               /* if the object has all necessary tags, add it to the result */
-               if($match_object[$row['photo_id']] == 0)
-                  array_push($tagged_photos, $row['photo_id']);
+            $query_str = "
+               SELECT DISTINCT pt1.photo_id
+                  FROM photo_tags pt1
+            ";
+
+            for($i = 0; $i < count($_SESSION['selected_tags']); $i++) {
+               $query_str.= "
+                  INNER JOIN photo_tags pt". ($i+2) ."
+                     ON pt1.photo_id=pt". ($i+2) .".photo_id
+               ";
             }
+            $query_str.= "WHERE pt1.tag_id=". $_SESSION['selected_tags'][0];
+            for($i = 1; $i < count($_SESSION['selected_tags']); $i++) {
+               $query_str.= "
+                  AND pt". ($i+1) .".tag_id=". $_SESSION['selected_tags'][$i] ."
+               "; 
+            }
+            $result = $this->db->db_query($query_str);
+         }
+
+         while($row = $this->db->db_fetch_object($result)) {
+            array_push($tagged_photos, $row['photo_id']);
          }
          return $tagged_photos;
       }
@@ -358,10 +400,6 @@ class PHPFSPOT {
 
    public function create_thumbnail($image, $width)
    {  
-      // if thumbnail already exists, don't recreate it
-      if(file_exists(dirname($image) ."/thumbs/". $width ."_". basename($image)))
-         return;
-
       $meta = $this->get_meta_informations($image);
 
       $rotate = 0;