some much more flexible thumbnail generation
[phpfspot.git] / phpfspot.class.php
index 9c426a30ce20f678d9daa95eb2c141305d491faa..06ded529c331c1804c6942d02ea3a7eb25daf5be 100644 (file)
@@ -117,25 +117,39 @@ class PHPFSPOT {
          }
       }
 
-
       $details = $this->get_photo_details($photo);
-      $meta = $this->get_meta_informations($this->translate_path($details['directory_path']) ."/". $details['name']);
-      $info = getimagesize($this->translate_path($details['directory_path']) ."/thumbs/". $this->cfg->photo_width ."_". $details['name']);
+      $orig_path = $this->translate_path($details['directory_path']) ."/". $details['name'];
+      $thumb_path = $this->translate_path($details['directory_path']) ."/thumbs/". $this->cfg->photo_width ."_". $details['name'];
+
+      /* If the thumbnail doesn't exist yet, try to create it */
+      if(!file_exists($thumb_path)) {
+         $this->gen_thumb($photo, 0, 1);
+      }
+
+      $meta = $this->get_meta_informations($orig_path);
 
-      $this->tmpl->assign('description', $details['description']);
-      $this->tmpl->assign('image_name', $details['name']);
+      if(file_exists($thumb_path)) {
 
-      $this->tmpl->assign('width', $info[0]);
-      $this->tmpl->assign('height', $info[1]);
-      $this->tmpl->assign('ExifMadeOn', strftime("%a %x %X", $meta['FileDateTime']));
-      $this->tmpl->assign('ExifMadeWith', $meta['Make'] ." ". $meta['Model']);
-      $this->tmpl->assign('ExifOrigResolution', $meta['ExifImageWidth'] ."x". $meta['ExifImageLength']);
-      $this->tmpl->assign('ExifFileSize', round($meta['FileSize']/1024, 1));
-      $this->tmpl->assign('image_url', 'phpfspot_img.php?idx='. $photo ."&width=". $this->cfg->photo_width);
-      $this->tmpl->assign('image_url_full', 'phpfspot_img.php?idx='. $photo);
+         $info = getimagesize($thumb_path);
 
-      $this->tmpl->assign('tags', $this->get_photo_tags($photo));
+         $this->tmpl->assign('description', $details['description']);
+         $this->tmpl->assign('image_name', $details['name']);
+
+         $this->tmpl->assign('width', $info[0]);
+         $this->tmpl->assign('height', $info[1]);
+         $this->tmpl->assign('ExifMadeOn', strftime("%a %x %X", $meta['FileDateTime']));
+         $this->tmpl->assign('ExifMadeWith', $meta['Make'] ." ". $meta['Model']);
+         $this->tmpl->assign('ExifOrigResolution', $meta['ExifImageWidth'] ."x". $meta['ExifImageLength']);
+         $this->tmpl->assign('ExifFileSize', round($meta['FileSize']/1024, 1));
+    
+         $this->tmpl->assign('image_url', 'phpfspot_img.php?idx='. $photo ."&width=". $this->cfg->photo_width);
+         $this->tmpl->assign('image_url_full', 'phpfspot_img.php?idx='. $photo);
+
+         $this->tmpl->assign('tags', $this->get_photo_tags($photo));
+      }
+      else {
+         print "Can't open file ". $thumb_path ."\n";
+      }
 
       if($previous_img) {
          $this->tmpl->assign('previous_url', "javascript:showImage(". $previous_img .");");
@@ -154,8 +168,10 @@ class PHPFSPOT {
       $result = $this->db->db_query("
          SELECT tag_id as id, count(tag_id) as quantity
          FROM photo_tags
+         INNER JOIN tags t
+            ON t.id = tag_id
          GROUP BY tag_id
-         ORDER BY tag_id ASC
+         ORDER BY t.name ASC
       ");
 
       $tags = Array();
@@ -196,7 +212,7 @@ class PHPFSPOT {
           // 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;";
+         print "<a href=\"javascript:Tags('add', ". $key .");\" class=\"tag\" style=\"font-size: ". $size ."%;\">". $this->tags[$key] ."</a>";
 
       }
 
@@ -408,6 +424,9 @@ class PHPFSPOT {
 
    public function create_thumbnail($image, $width)
    {  
+      if(!file_exists($image))
+         return false;
+
       $meta = $this->get_meta_informations($image);
 
       $rotate = 0;
@@ -416,104 +435,95 @@ class PHPFSPOT {
       switch($meta['Orientation']) {
 
          case 1:
-            $rotate = 0;
-            $flip = false;
-            break;
-
+            $rotate = 0; $flip = false; break;
          case 2:
-            $rotate = 0;
-            $flip = true;
-            break;
-
+            $rotate = 0; $flip = true; break;
          case 3:
-            $rotate = 180;
-            $flip = false;
-            break;
-
+            $rotate = 180; $flip = false; break;
          case 4:
-            $rotate = 180;
-            $flip = true;
-            break;
-
+            $rotate = 180; $flip = true; break;
          case 5:
-            $rotate = 90;
-            $flip = true;
-            break;
-
+            $rotate = 90; $flip = true; break;
          case 6:
-            $rotate = 90;
-            $flip = false;
-            break;
-
+            $rotate = 90; $flip = false; break;
          case 7:
-            $rotate = 270;
-            $flip = true;
-            break;
-
+            $rotate = 270; $flip = true; break;
          case 8:
-            $rotate = 270;
-            $flip = false;
-            break;
+            $rotate = 270; $flip = false; break;
       }
 
       $src_img = @imagecreatefromjpeg($image);
 
-      if($src_img)
-      {  
-         /* grabs the height and width */
-         $new_w = imagesx($src_img);
-         $new_h = imagesy($src_img);
+      if(!$src_img) {
+         print "Can't load image from ". $image ."\n";
+         return false;
+      }
 
-         // If requested width is more then the actual image width,
-         // do not generate a thumbnail
+      /* grabs the height and width */
+      $new_w = imagesx($src_img);
+      $new_h = imagesy($src_img);
 
-         if($width >= $new_w) {
-            imagedestroy($src_img);
-            return;
-         }
+      // If requested width is more then the actual image width,
+      // do not generate a thumbnail
 
-         /* calculates aspect ratio */
-         $aspect_ratio = $new_h / $new_w;
+      if($width >= $new_w) {
+         imagedestroy($src_img);
+         return true;
+      }
 
-         /* sets new size */
-         $new_w = $width;
-         $new_h = abs($new_w * $aspect_ratio);
+      /* calculates aspect ratio */
+      $aspect_ratio = $new_h / $new_w;
 
-         /* creates new image of that size */
-         $dst_img = imagecreatetruecolor($new_w,$new_h);
+      /* sets new size */
+      $new_w = $width;
+      $new_h = abs($new_w * $aspect_ratio);
 
-         imagefill($dst_img, 0, 0, ImageColorAllocate($dst_img, 255, 255, 255));
+      /* creates new image of that size */
+      $dst_img = imagecreatetruecolor($new_w,$new_h);
 
-         /* copies resized portion of original image into new image */
-         imagecopyresampled($dst_img,$src_img,0,0,0,0,$new_w,$new_h,imagesx($src_img),imagesy($src_img));
+      imagefill($dst_img, 0, 0, ImageColorAllocate($dst_img, 255, 255, 255));
 
-         /* needs the image to be flipped horizontal? */
-         if($flip) {
-            print "(FLIP)";
-            $image = $dst_img;
-            for($x = 0; $x < $new_w; $x++) {
-               imagecopy($dst_img, $image, $x, 0, $w - $x - 1, 0, 1, $h);
-            }
-         }
+      /* copies resized portion of original image into new image */
+      imagecopyresampled($dst_img,$src_img,0,0,0,0,$new_w,$new_h,imagesx($src_img),imagesy($src_img));
 
-         if($rotate) {
-            print "(ROTATE)";
-            $dst_img = $this->rotateImage($dst_img, $rotate);
+      /* needs the image to be flipped horizontal? */
+      if($flip) {
+         print "(FLIP)";
+         $image = $dst_img;
+         for($x = 0; $x < $new_w; $x++) {
+            imagecopy($dst_img, $image, $x, 0, $w - $x - 1, 0, 1, $h);
          }
+      }
+
+      if($rotate) {
+         print "(ROTATE)";
+         $dst_img = $this->rotateImage($dst_img, $rotate);
+      }
 
-         /* write down new generated file */
+      /* write down new generated file */
 
-         if(!file_exists(dirname($image) ."/thumbs"))
-            mkdir(dirname($image) ."/thumbs");
+      if(!file_exists(dirname($image) ."/thumbs")) {
+         $result = mkdir(dirname($image) ."/thumbs");
+         if($result === false) {
+            print "Can't create thumb directory ". dirname($image) ."/thumbs\n";
+            return false;
+         }
+      }
 
-         $newfile = dirname($image) ."/thumbs/". $width ."_". basename($image);
-         imagejpeg($dst_img, $newfile, 75);
+      $newfile = dirname($image) ."/thumbs/". $width ."_". basename($image);
+      $result = imagejpeg($dst_img, $newfile, 75);
 
-         /* free your mind */
-         imagedestroy($dst_img);
-         imagedestroy($src_img);
+      /* free your mind */
+      imagedestroy($dst_img);
+      imagedestroy($src_img);
+
+      if($result === false) {
+         print "Can't write thumbnail ". $newfile ."\n";
+         return false;
       }
 
+      return true;
+
    } // create_thumbnail()
 
    public function get_meta_informations($file)
@@ -536,36 +546,56 @@ class PHPFSPOT {
 
    } // check_config_table
 
+   /**
+    * Generates a thumbnail from photo idx
+    *
+    * This function will generate JPEG thumbnails from provided F-Spot photo
+    * indizes.
+    *
+    * 1. Check if all thumbnail generations (width) are already in place and
+    *    readable
+    * 2. Check if the md5sum of the original file has changed
+    * 3. Generate the thumbnails if needed
+    */
    public function gen_thumb($idx = 0, $fromcmd = 0, $force = 0)
    {
-      $details = $this->get_photo_details($idx);
+      $resolutions = Array(
+         $this->cfg->thumb_width,
+         $this->cfg->bubble_width,
+         $this->cfg->photo_width,
+      );
 
+      $details = $this->get_photo_details($idx);
       $full_path = $this->translate_path($details['directory_path'])  ."/". $details['name'];
       $file_md5 = md5_file($full_path);
 
       if($fromcmd) print "Image [". $idx ."] ". $details['name'] ." Thumbnails:";
 
-      /* if the file hasn't changed there is no need to regen the thumb */
-      if(!$force && $file_md5 == $this->getMD5($idx)) {
-         if($fromcmd) print " file has not changed - skipping\n";
-         return;
-      }
+      $error = 0;
 
-      /* set the new/changed MD5 sum for the current photo */
-      $this->setMD5($idx, $file_md5);
+      foreach($resolutions as $resolution) {
+         $thumb_path = $this->translate_path($details['directory_path'])  ."/thumbs/". $resolution ."_". $details['name'];
+         if(!file_exists($thumb_path)) {
 
-      $resolutions = Array(
-         $this->cfg->thumb_width,
-         $this->cfg->bubble_width,
-         $this->cfg->photo_width
-      );
+            if($fromcmd) print " ". $resolution ."px";
+            if(!$this->create_thumbnail($full_path, $resolution))
+               $error = 1;
 
-      /* create thumbnails for the requested resolutions */
-      foreach($resolutions as $resolution) {
-         if($fromcmd) print " ". $resolution ."px";
-         $this->create_thumbnail($full_path, $resolution);
+         }
+         /* if the file hasn't changed there is no need to regen the thumb */
+         elseif($file_md5 != $this->getMD5($idx) || $force) {
+
+            if($fromcmd) print " ". $resolution ."px";
+            if(!$this->create_thumbnail($full_path, $resolution))
+               $error = 1;
+
+         }
       }
 
+      /* set the new/changed MD5 sum for the current photo */
+      if(!$error)
+         $this->setMD5($idx, $file_md5);
+
       if($fromcmd) print "\n";
 
    } // gen_thumb()