moved tag-search code into general getphotoselection function
[phpfspot.git] / phpfspot.class.php
1 <?php
2
3 require_once "phpfspot_cfg.php";
4 require_once "phpfspot_db.php";
5 require_once "phpfspot_tmpl.php";
6
7 class PHPFSPOT {
8
9    var $cfg;
10    var $db;
11    var $cfg_db;
12    var $tmpl;
13    var $tags;
14    var $avail_tags;
15    var $current_tags;
16
17    public function __construct()
18    {
19       $this->cfg = new PHPFSPOT_CFG;
20
21       $this->db = new PHPFSPOT_DB(&$this, $this->cfg->fspot_db);
22
23       $this->cfg_db = new PHPFSPOT_DB(&$this, $this->cfg->phpfspot_db);
24       $this->check_config_table();
25
26       $this->tmpl = new PHPFSPOT_TMPL($this);
27
28       $this->get_tags();
29
30       session_start();
31
32       if(!isset($_SESSION['tag_condition']))
33          $_SESSION['tag_condition'] = 'or';
34
35       if(!isset($_SESSION['searchfor']))
36          $_SESSION['searchfor'] = '';
37
38    } // __construct()
39
40    public function __destruct()
41    {
42
43    } // __destruct()
44
45    public function show()
46    {
47       $this->tmpl->assign('searchfor', $_SESSION['searchfor']);
48       $this->tmpl->assign('page_title', $this->cfg->page_title);
49       $this->tmpl->assign('current_condition', $_SESSION['tag_condition']);
50       $this->tmpl->show("index.tpl");
51
52    } // show()
53
54    private function get_tags()
55    {
56       $this->avail_tags = Array();
57       $count = 0;
58    
59       $result = $this->db->db_query("
60          SELECT id,name
61          FROM tags
62          ORDER BY sort_priority ASC
63       ");
64       
65       while($row = $this->db->db_fetch_object($result)) {
66
67          $tag_id = $row['id'];
68          $tag_name = $row['name'];
69
70          /* check if config requests to ignore this tag */
71          if(in_array($row['name'], $this->cfg->hide_tags))
72             continue;
73
74          $this->tags[$tag_id] = $tag_name; 
75          $this->avail_tags[$count] = $tag_id;
76
77          $count++;
78
79       }
80
81    } // get_tags()
82
83    public function get_photo_details($idx)
84    {
85       $result = $this->db->db_query("
86          SELECT *
87          FROM photos
88          WHERE id='". $idx ."'
89       ");
90       
91       return $this->db->db_fetch_object($result);
92
93    } // get_photo_details
94
95    public function translate_path($path, $width = 0)
96    {  
97       return str_replace($this->cfg->path_replace_from, $this->cfg->path_replace_to, $path);
98
99    } // translate_path
100
101    public function showPhoto($photo)
102    {
103       $all_photos = $this->getPhotoSelection();
104
105       foreach($all_photos as $all_photo) {
106          
107          if($get_next) {
108             $next_img = $all_photo;
109             break;
110          }
111
112          if($all_photo == $photo) {
113             $get_next = 1;
114          }
115          else {
116             $previous_img = $all_photo;
117          }
118       }
119
120
121       $details = $this->get_photo_details($photo);
122       $meta = $this->get_meta_informations($this->translate_path($details['directory_path']) ."/". $details['name']);
123       $info = getimagesize($this->translate_path($details['directory_path']) ."/thumbs/". $this->cfg->photo_width ."_". $details['name']);
124
125       $this->tmpl->assign('width', $info[0]);
126       $this->tmpl->assign('height', $info[1]);
127       $this->tmpl->assign('c_date', $meta['DateTime']);
128       $this->tmpl->assign('madewith', $meta['Make'] ." ". $meta['Model']);
129       $this->tmpl->assign('image_name', $details['name']);
130       $this->tmpl->assign('image_url', 'phpfspot_img.php?idx='. $photo ."&amp;width=". $this->cfg->photo_width);
131       $this->tmpl->assign('image_url_full', 'phpfspot_img.php?idx='. $photo);
132
133       if($previous_img) {
134          $this->tmpl->assign('previous_url', "javascript:showImage(". $previous_img .");");
135       }
136
137       if($next_img) {
138          $this->tmpl->assign('next_url', "javascript:showImage(". $next_img .");");
139       }
140
141       $this->tmpl->show("single_photo.tpl");
142
143    } // showPhoto()
144
145    public function getAvailableTags()
146    {
147       foreach($this->avail_tags as $tag)
148       {
149          if(isset($_SESSION['selected_tags']) && in_array($tag, $_SESSION['selected_tags']))
150             continue;
151
152          // return all available (= not selected) tags
153          print "<a href=\"javascript:Tags('add', ". $tag .");\">". $this->tags[$tag] ."</a>&nbsp;";
154
155       }
156
157    } // getAvailableTags()
158
159    public function getSelectedTags()
160    {
161       foreach($this->avail_tags as $tag)
162       {
163          // return all selected tags
164          if(isset($_SESSION['selected_tags']) && in_array($tag, $_SESSION['selected_tags'])) {
165             print "<a href=\"javascript:Tags('del', ". $tag .");\">". $this->tags[$tag] ."</a>&nbsp;";
166          }
167
168       }
169
170    } // getSelectedTags()
171
172    public function addTag($tag)
173    {
174       if(!isset($_SESSION['selected_tags']))
175          $_SESSION['selected_tags'] = Array();
176
177       array_push($_SESSION['selected_tags'], $tag);
178    
179    } // addTag()
180
181    public function delTag($tag)
182    {
183       if(isset($_SESSION['selected_tags'])) {
184          $key = array_search($tag, $_SESSION['selected_tags']);
185          unset($_SESSION['selected_tags'][$key]);
186       }
187
188    } // delTag()
189
190    public function resetTags()
191    {
192       unset($_SESSION['selected_tags']);
193
194    } // resetTags()
195
196    public function getPhotoSelection()
197    {  
198       $tagged_photos = Array();
199
200       /* return a search result */
201       if(isset($_SESSION['searchfor']) && $_SESSION['searchfor'] != '') {
202          $result = $this->db->db_query("
203             SELECT DISTINCT photo_id
204                FROM photo_tags pt
205             INNER JOIN photos p
206                ON p.id=pt.photo_id
207             INNER JOIN tags t
208                ON pt.tag_id=t.id
209             WHERE t.name LIKE '%". $_SESSION['searchfor'] ."%'
210                ORDER BY p.time ASC
211          ");
212          while($row = $this->db->db_fetch_object($result)) {
213             array_push($tagged_photos, $row['photo_id']);
214          }
215          return $tagged_photos;
216       }
217
218       /* return according the selected tags */
219       if(isset($_SESSION['selected_tags'])) {
220          $selected = "";
221          foreach($_SESSION['selected_tags'] as $tag)
222             $selected.= $tag .",";
223          $selected = substr($selected, 0, strlen($selected)-1);
224
225          if($_SESSION['tag_condition'] == 'or') {
226             $result = $this->db->db_query("
227                SELECT DISTINCT photo_id
228                   FROM photo_tags pt
229                INNER JOIN photos p
230                   ON p.id=pt.photo_id
231                WHERE pt.tag_id IN (". $selected .")
232                ORDER BY p.time ASC
233             ");
234             while($row = $this->db->db_fetch_object($result)) {
235                array_push($tagged_photos, $row['photo_id']);
236             }
237          }
238          elseif($_SESSION['tag_condition'] == 'and') {
239             $result = $this->db->db_query("
240                SELECT DISTINCT photo_id, tag_id
241                   FROM photo_tags pt
242                INNER JOIN photos p
243                   on p.id=pt.photo_id
244                WHERE pt.tag_id IN (". $selected .")
245                ORDER BY p.time ASC
246             ");
247
248             /* now we need to check if each object fulfills the condition
249                and has all the selected tags assigned
250             */
251             $match_object = Array();
252             $matches_needed = count($_SESSION['selected_tags']);
253             while($row = $this->db->db_fetch_object($result)) {
254                /* set the counter for this object */
255                if(!isset($match_object[$row['photo_id']]))
256                   $match_object[$row['photo_id']] = $matches_needed;
257                
258                /* we have a match? decrement the counter */
259                if(in_array($row['tag_id'], $_SESSION['selected_tags']))
260                   $match_object[$row['photo_id']]--;
261
262                /* if the object has all necessary tags, add it to the result */
263                if($match_object[$row['photo_id']] == 0)
264                   array_push($tagged_photos, $row['photo_id']);
265             }
266          }
267          return $tagged_photos;
268       }
269
270       /* return all available photos */
271       $result = $this->db->db_query("
272          SELECT DISTINCT photo_id
273             FROM photo_tags pt
274          INNER JOIN photos p
275             ON p.id=pt.photo_id
276          ORDER BY p.time ASC
277       ");
278       while($row = $this->db->db_fetch_object($result)) {
279          array_push($tagged_photos, $row['photo_id']);
280       }
281       return $tagged_photos;
282
283    } // getPhotoSelection()
284
285    public function showPhotoIndex()
286    {
287       $photos = $this->getPhotoSelection();
288
289       $count = count($photos);
290
291       $rows = 0;
292       $cols = 0;
293       $images[$rows] = Array();
294
295       for($i = 0; $i < $count; $i++) {
296
297          $images[$rows][$cols] = $photos[$i];
298
299          if($cols == $this->cfg->thumbs_per_row-1) {
300             $cols = 0;
301             $rows++;
302             $images[$rows] = Array();
303          }
304          else {
305             $cols++;
306          }
307       } 
308
309       // +1 for for smarty's selection iteration
310       $rows++;
311
312          //$images.= "<img src=\"phpfspot_img.php?idx=". $photo ."&amp;width=". $this->cfg->thumb_width ."\" /><br />\n";
313
314       $this->tmpl->assign('count', $count);
315       $this->tmpl->assign('width', $this->cfg->thumb_width);
316       $this->tmpl->assign('images', $images);
317       $this->tmpl->assign('rows', $rows);
318       $this->tmpl->assign('columns', $this->cfg->thumbs_per_row);
319       $this->tmpl->show("photo_index.tpl");
320
321
322    } // showPhotoIndex()
323
324    public function showBubbleDetails($photo, $direction)
325    {
326       if($direction == "up")
327          $direction = "bubbleimg_up";
328       else
329          $direction = "bubbleimg_down";
330
331       $details = $this->get_photo_details($photo);
332
333       $image_url = "phpfspot_img.php?idx=". $photo ."&amp;width=". $this->cfg->bubble_width;
334
335       $filesize = filesize($this->translate_path($details['directory_path'])  ."/". $details['name']);
336       $filesize = rand($filesize/1024, 2);
337
338       $img = getimagesize($this->translate_path($details['directory_path'])  ."/". $details['name']);
339
340       $this->tmpl->assign('file_size', $filesize);
341       $this->tmpl->assign('width', $img[0]);
342       $this->tmpl->assign('height', $img[1]);
343       $this->tmpl->assign('file_name', $details['name']);
344       $this->tmpl->assign('image_id', $direction);
345       $this->tmpl->assign('image_url', $image_url);
346       $this->tmpl->show("bubble_details.tpl");
347
348    } // showBubbleDetails()
349
350    public function showCredits()
351    {
352       $this->tmpl->assign('version', $this->cfg->version);
353       $this->tmpl->assign('product', $this->cfg->product);
354       $this->tmpl->show("credits.tpl");
355
356    } // showCredits()
357
358    public function create_thumbnail($image, $width)
359    {  
360       // if thumbnail already exists, don't recreate it
361       if(file_exists(dirname($image) ."/thumbs/". $width ."_". basename($image)))
362          return;
363
364       $src_img = @imagecreatefromjpeg($image);
365
366       if($src_img)
367       {  
368          /* grabs the height and width */
369          $new_w = imagesx($src_img);
370          $new_h = imagesy($src_img);
371
372          // If requested width is more then the actual image width,
373          // do not generate a thumbnail
374
375          if($width >= $new_w) {
376             imagedestroy($src_img);
377             return;
378          }
379
380          /* calculates aspect ratio */
381          $aspect_ratio = $new_h / $new_w;
382
383          /* sets new size */
384          $new_w = $width;
385          $new_h = abs($new_w * $aspect_ratio);
386
387          /* creates new image of that size */
388          $dst_img = imagecreatetruecolor($new_w,$new_h);
389
390          imagefill($dst_img, 0, 0, ImageColorAllocate($dst_img, 255, 255, 255));
391
392          /* copies resized portion of original image into new image */
393          imagecopyresampled($dst_img,$src_img,0,0,0,0,$new_w,$new_h,imagesx($src_img),imagesy($src_img));
394
395          /* write down new generated file */
396
397          if(!file_exists(dirname($image) ."/thumbs"))
398             mkdir(dirname($image) ."/thumbs");
399
400          $newfile = dirname($image) ."/thumbs/". $width ."_". basename($image);
401          imagejpeg($dst_img, $newfile, 75);
402
403          /* free your mind */
404          imagedestroy($dst_img);
405          imagedestroy($src_img);
406       }
407
408    } // create_thumbnail()
409
410    public function get_meta_informations($file)
411    {
412
413       return exif_read_data($file);
414
415    } // get_meta_informations()
416
417    public function check_config_table()
418    {
419       // if the config table doesn't exist yet, create it
420       if(!$this->cfg_db->db_check_table_exists("images")) {
421          $this->cfg_db->db_exec("
422             CREATE TABLE images (
423                img_idx int primary key,
424                img_md5 varchar(32)
425             )
426             ");
427       }
428
429    } // check_config_table
430
431    public function gen_thumbs($idx = 0, $fromcmd = 0)
432    {
433       if(!$idx) {
434          /* get all available photos */
435          $all = $this->getPhotoSelection();
436       }
437       else
438          $all = Array($idx);
439       
440       foreach($all as $photo) {
441
442          $details = $this->get_photo_details($photo);
443
444          $full_path = $this->translate_path($details['directory_path'])  ."/". $details['name'];
445          $file_md5 = md5_file($full_path);
446
447          if($fromcmd) print "Image ". $details['name'] ." Thumbnails:";
448
449          /* if the file hasn't changed there is no need to regen the thumb */
450          if($file_md5 == $this->getMD5($photo)) {
451             if($fromcmd) print " file has not changed - skipping\n";
452             continue;
453          }
454
455          /* set the new/changed MD5 sum for the current photo */
456          $this->setMD5($photo, $file_md5);
457
458          $resolutions = Array(
459                            $this->cfg->thumb_width,
460                            $this->cfg->bubble_width,
461                            $this->cfg->photo_width
462                         );
463
464          /* create thumbnails for the requested resolutions */
465          foreach($resolutions as $resolution) {
466             if($fromcmd) print " ". $resolution ."px";
467             $this->create_thumbnail($full_path, $resolution);
468          }
469
470          if($fromcmd) print "\n";
471
472       }
473
474    } // gen_thumbs()
475
476    private function getMD5($idx)
477    {
478       $result = $this->cfg_db->db_query("
479          SELECT img_md5 
480          FROM images
481          WHERE img_idx='". $idx ."'
482       ");
483
484       if(!$result)
485          return 0;
486
487       $img = $this->cfg_db->db_fetch_object($result);
488       return $img['img_md5'];
489       
490    } // getMD5()
491
492    private function setMD5($idx, $md5)
493    {
494       $result = $this->cfg_db->db_exec("
495          REPLACE INTO images (img_idx, img_md5)
496          VALUES ('". $idx ."', '". $md5 ."')
497       ");
498
499    } // setMD5()
500
501    public function setTagCondition($mode)
502    {
503       $_SESSION['tag_condition'] = $mode;
504
505    } // setTagCondition()
506
507    public function startSearch($searchfor)
508    {
509       $_SESSION['searchfor'] = $searchfor;
510
511    } // startSearch()
512
513 }
514
515 ?>