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cdm-dataportal / modules / cdm_dataportal / includes / media.inc @ a89c837e

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1
<?php
2
/**
3
 * @file
4
 * Functions for dealing with CDM entities of type SpeciemenOrOccurrences
5
 *
6
 * @copyright
7
 *   (C) 2007-2012 EDIT
8
 *   European Distributed Institute of Taxonomy
9
 *   http://www.e-taxonomy.eu
10
 *
11
 *   The contents of this module are subject to the Mozilla
12
 *   Public License Version 1.1.
13
 * @see http://www.mozilla.org/MPL/MPL-1.1.html
14
 *
15
 * @author
16
 *   - Andreas Kohlbecker <a.kohlbecker@BGBM.org>
17
 */
18

    
19
/**
20
 * Returns an array of render array entries for a HTML description list.
21
 *
22
 * @see theme_description_list()
23
 *
24
 * @param array $rights_list
25
 *   array of CDM Rights entities
26
 *
27
 * @return array
28
 *   the render array of the groups for the HTML description list
29
 */
30
function cdm_rights_as_dl_groups($rights_list) {
31
  $copyrights = array();
32

    
33
  $licenses = array();
34
  $access_rights = array();
35
  $unknown = array();
36

    
37
  foreach ($rights_list as $right) {
38
    if (!is_object($right)) {
39
      continue;
40
    }
41
    $type_uuid = isset($right->type->uuid) ? $right->type->uuid : 'UNKNOWN';
42
    switch ($type_uuid) {
43

    
44
      case UUID_RIGHTS_COPYRIGHT:
45
        $text = '';
46
        if (isset($right->text) ){
47
          // sanitize potential '(c)' away
48
          $text  = preg_replace('/^\(c\)/', '', $right->text);
49
        } if (isset($right->agent) ){
50
          $text  .= (strlen($text) > 0 ? ', ' : '') . $right->agent->titleCache;
51
        }
52

    
53
        $copyrights[] = array('#markup' => '&copy; ' . $text);
54
        break;
55

    
56
      case UUID_RIGHTS_LICENCE:
57
        $license_str = '';
58
        if (isset($right->abbreviatedText)) {
59
          $license_str .= $right->abbreviatedText;
60
        }
61
        if (isset($right->uri)) {
62
          if (strlen($license_str) > 0) {
63
            $license_str = l($license_str, $right->uri);
64
          }
65
          else {
66
            $license_str = l(t('link'), $right->uri);
67
          }
68
        }
69
        if (strlen($license_str) > 0 && isset($right->text)) {
70
          $license_str .= ': ' . $right->text;
71
        }
72
        $licenses[] = array('#markup' => $license_str);
73
        break;
74

    
75
      case UUID_RIGHTS_ACCESS_RIGHTS:
76
        $access_rights[] = array('#markup' => $right->text);
77
        break;
78

    
79
      default:
80
        $unknown_groups[] = array('#markup' => $right->text);
81
    }
82
  }
83

    
84
  $groups = array();
85
  if (count($copyrights) > 0) {
86
    _description_list_group_add($groups, t('Copyright') . ':', $copyrights);
87
  }
88
  if (count($licenses) > 0) {
89
    _description_list_group_add($groups, t('Licenses') . ':', $licenses);
90
  }
91
  if (count($access_rights) > 0) {
92
    _description_list_group_add($groups, t('Access rights') . ':', $access_rights);
93
  }
94
  if (count($unknown) > 0) {
95
    _description_list_group_add($groups, t('Rights') . ':', $unknown);
96
  }
97

    
98
  return $groups;
99

    
100
}
101

    
102

    
103
/**
104
 * Provides the markup for an icon to represent a media which is associated with the given $feature.
105
 *
106
 * @param $feature
107
 *   the cdm Feature term
108
 * @param $media_url
109
 *   Optional, currently unused. May be used in future to display different
110
 *   icons for different media urls, like the fav-icon of the referenced
111
 * @return string
112
 *   The markup for the icon
113
 */
114
function media_feature_icon($feature, $media_url = NULL) {
115
  return font_awesome_icon_markup('fa-book', array('alt' => $feature->representation_L10n));
116
}
117

    
118
/**
119
 * Gets the metadata info such as title or artist and source references of a media file.
120
 *
121
 * The function tries at first to get all the info from the file metadata
122
 * and if it is not available look at the media file info stored at the database.
123
 *
124
 * @param mixed $media
125
 *   The media file object for which to get the metadata.
126
 *
127
 * @return array
128
 *   The array with the available specified metadata info.
129
 */
130
function read_media_metadata($media)
131
{
132

    
133
  $metadata = array(
134
    'title' => '',// Media_metadata and media.
135
    'artist' => '',// Media_metadata and media.
136
    'rights',// Media_metadata and media.
137
    'location',// Media_metadata.
138
    'filename' => '',// Media.
139
    'mediacreated' => '', // Media.
140
    'description' => ''
141
  );
142

    
143
  // Getting the media metadata.
144
  $media_metadata = cdm_ws_get(CDM_WS_MEDIA_METADATA, array($media->uuid));
145
  $media_metadata_aux = (array)$media_metadata;
146

    
147

    
148
  // Filename.
149
  if (!empty($media->representations[0]->parts[0]->uri)) {
150
    $fileUri = $media->representations[0]->parts[0]->uri;
151
    $filename = substr($fileUri, strrpos($fileUri, "/") + 1);
152
    $metadata['filename'] = $filename;
153
  } else {
154
    $metadata['filename'] = '';
155
  }
156

    
157
  // Title.
158
  if (!empty($media->title_L10n)) {
159
    $metadata['title'] = $media->title_L10n;
160
  } else if ($media->protectedTitleCache && !empty($media->titleCache)) {
161
    $metadata['title'] = $media->titleCache;
162
  } else if (!empty($media_metadata->ObjectName)) {
163
    $metadata['title'] = $media_metadata->ObjectName;
164
  } else if (!empty($media_metadata_aux['Object Name'])) {
165
    $metadata['title'] = $media_metadata_aux['Object Name'];
166
  } else if (!empty($media->titleCache)) {
167
    $metadata['title'] = $media->titleCache;
168
  }
169

    
170
  if (!empty($media->description_L10n)) {
171
    $metadata['description'] = $media->description_L10n;
172
  }
173

    
174
  // Artist.
175
  if (!empty($media->artist->titleCache)) {
176
    $metadata['artist'] = $media->artist->titleCache;
177
  } else if (!empty($media_metadata->Artist)) {
178
    $metadata['artist'] = '' . $media_metadata->Artist;
179
  }
180

    
181
  // Rights
182
  $metadata['rights'] = array();
183
  if (!empty($media_metadata->Copyright)) {
184
    $rightsObj = new stdClass();
185
    $rightsObj->type = new stdClass();
186
    $rightsObj->type->uuid = UUID_RIGHTS_COPYRIGHT;
187
    $rightsObj->type->titleCache = 'copyright';
188
    $rightsObj->type->representation_L10n = 'copyright';
189
    $rightsObj->type->text = $media_metadata->Copyright;
190
    $metadata['rights'][] = $rightsObj;
191
  }
192
  if (isset($media->rights) && is_array($media->rights)) {
193
    $metadata['rights'] = array_merge($metadata['rights'], $media->rights);
194
  }
195

    
196
  // Filling the description (though there is no description in the db???).
197
  // $metadata_caption['description'] = $media->description_L10n;
198

    
199
  // Location.
200
  $metadata['location'] = array();
201
  $metadata['location']['sublocation'] = !empty($media_metadata->Sublocation) ? $media_metadata->Sublocation : FALSE;
202
  $metadata['location']['city'] = !empty($media_metadata->City) ? $media_metadata->City : FALSE;
203
  $metadata['location']['province'] = !empty($media_metadata->Province) ? $media_metadata->Province : FALSE;
204
  $metadata['location']['country'] = !empty($media_metadata->Country) ? $media_metadata->Country : FALSE;
205

    
206
  /*
207
   // Creation date.
208
   if($media_metadata["Modify Date"])
209
   $metadata['mediacreated'] = $media_metadata["Modify Date"];
210
   else
211
   */
212
  if (!empty($media->mediaCreated)) {
213
    $metadata['mediacreated'] =  timePeriodToString($media->mediaCreated);
214
  }
215

    
216
  return $metadata;
217
}
218

    
219

    
220
/**
221
 * Return HTML for a media gallery
222
 *
223
 * @param array $configuration
224
 *   An associative array containing:
225
 *   - mediaList: An array of Media entities.
226
 *   - maxExtend
227
 *   - cols
228
 *   - maxRows
229
 *   - showCaption:  boolean value, whether to show captions or not.
230
 *   - captionElements: An array of caption elements to be shown. In case the array
231
 *        is empty of NULL  all available caption elements will be show. In order to
232
 *        supress all captions  set 'showCaption' to FALSE
233
 *        example:
234
 *          1) Show 'title', 'description', 'file', 'filename' in the caption:
235
 *            array('title', 'description', 'file', 'filename'),
236
 *          2) To add an addtional link at the bottom of  the caption:
237
 *            array('titlecache', '#uri'=>t('Open Image')) this will cause a link
238
 *            to be rendered with label 'Open image' which will open the according
239
 *            media object.
240
 *   - mediaLinkType: Valid values:
241
 *      - "NONE": do not link the images,
242
 *      - "LIGHTBOX": open the link in a light box,
243
 *      - "NORMAL": link to the image page or to the $alternativeMediaUri if
244
 *        it is defined.
245
 *   - alternativeMediaUri: A fix string or an array of alternative URIs to link the images
246
 *     which will overwrite the URIs of the media parts.
247
 *     The order of URI in this array must correspond with the order of
248
 *     images in $mediaList.
249
 *   - galleryLinkUri: An URI to link the the hint on more images to;
250
 *     if NULL no link is created.
251
 *
252
 * @return array
253
 *   A render array for the image gallery
254
 * @ingroup: compose
255
 */
256
function compose_cdm_media_gallerie($configuration) {
257

    
258
  $mediaList = $configuration['mediaList'];
259

    
260
  // Do not show an empty gallery.
261
    if (!is_array($mediaList) || count($mediaList) == 0){
262
        return '';
263
    }
264

    
265

    
266
  // merge with default
267
  $configuration = array_merge(
268
    array(
269
      'mediaList' => NULL,
270
      'galleryName' => NULL,
271
      'maxExtend' => 150,
272
      'cols' => 4,
273
      'maxRows' => FALSE,
274
      'captionElements' => array('title'),
275
      'mediaLinkType' => 'LIGHTBOX',
276
      'alternativeMediaUri' => NULL,
277
      'galleryLinkUri' => NULL,
278
      'showCaption' => TRUE,
279
    ),
280
    $configuration);
281

    
282
  $galleryName = $configuration['galleryName'];
283
  $maxExtend = $configuration['maxExtend'];
284
  $cols = $configuration['cols'];
285
  $maxRows = $configuration['maxRows'];
286
  $captionElements = $configuration['captionElements'];
287
  $mediaLinkType = $configuration['mediaLinkType'];
288
  $alternativeMediaUri = $configuration['alternativeMediaUri'];
289
  $galleryLinkUri = $configuration['galleryLinkUri'];
290
  $showCaption = $configuration['showCaption'];
291

    
292
  $caption_link_uri = '';
293
  if(isset($captionElements['#uri'])){
294
    $caption_link_uri = $captionElements['#uri'];
295
    unset($captionElements['#uri']);
296
  }
297
  if (!is_array($captionElements) || count($captionElements) == 0) {
298
    $captionElements = NULL;
299
  }
300

    
301
  // TODO correctly handle multiple media representation parts
302
  $_SESSION['cdm']['last_gallery'] = current_path();
303
  // Prevent from errors.
304
  if (!isset($mediaList[0])) {
305
    // return;
306
  }
307

    
308
  // --- Duplicate suppression: media can be reused but should only be shown
309
  // once.
310
  $tempMediaList = array();
311
  $tempMediaUuids = array();
312
  foreach ($mediaList as $media) {
313
    if (!in_array($media->uuid, $tempMediaUuids)) {
314
      $tempMediaList[] = $media;
315
      $tempMediaUuids[] = $media->uuid;
316
    }
317
  }
318
  $mediaList = $tempMediaList;
319

    
320
  // ---
321
  $galleryID = "media_gallery_" . $galleryName;
322

    
323
  $mediaPartLinkAttributes = array();
324
  $openMediaLinkAttributes = array();
325

    
326
  // Prepare media links.
327
  $doLink = FALSE;
328
  if ($mediaLinkType != 'NONE') {
329
    $doLink = TRUE;
330
  }
331
  if ($mediaLinkType == 'LIGHTBOX') {
332
    $doLink = TRUE;
333
    _add_js_lightbox($galleryID);
334
  }
335

    
336
  // Render the media gallery grid.
337
  $out = '<table id="' . $galleryID . '" class="media_gallery">';
338
  $out .= '<colgroup>';
339
  for ($c = 0; $c < $cols; $c++) {
340
    $out .= '<col style="width:' . (100 / $cols) . '%;">';
341
  }
342
  $out .= '</colgroup>';
343

    
344
  for ($r = 0; ($r < $maxRows || !$maxRows) && count($mediaList) > 0; $r++) {
345
    $captionParts = array();
346
    $mediaIndex = 0;
347
    $out .= '<tr>';
348
    for ($c = 0; $c < $cols; $c++) {
349
      $media = array_shift($mediaList);
350
      if(!$media){
351
        continue;
352
      }
353
      $complete_media = cdm_ws_get(CDM_WS_MEDIA, $media->uuid);
354
      if (isset($complete_media->representations[0]->parts[0])) {
355

    
356
        //
357
        // Find preferred representation.
358
        //
359

    
360
        $thumbnail_representations = cdm_preferred_media_representations($complete_media, array(
361
            'image/jpg',
362
            'image/jpeg',
363
            'image/png',
364
            'image/gif',
365
          ),
366
          $maxExtend,
367
          $maxExtend
368
        );
369
        // due to a bug the portal/taxon/{uuid}/media service only delivers a filtered media object
370
        // which only contains the thumbnail representation even if the height and width filters are not set.
371
        // --> #6970
372
        // to get hold of the full resolution images we send a separate request :
373
       // $complete_media = cdm_ws_get(CDM_WS_MEDIA, $media->uuid);
374
        $full_size_representations = cdm_preferred_media_representations($complete_media, array(
375
            'image/jpg',
376
            'image/jpeg',
377
            'image/png',
378
            'image/gif',
379
          )
380
        );
381
        if (count($thumbnail_representations) == 0) {
382
          // Fallback to using the first one in the list.
383
          $thumbnail_representations = $media->representations;
384
          $full_size_representations = $media->representations;
385
        }
386
        $thumbnail_representation = array_shift($thumbnail_representations);
387
        $full_size_representation = array_shift($full_size_representations);
388

    
389
        // $preferred_media_representation->parts[0]->uri =
390
        // "http://127.0.0.1/images/palmae/palm_tc_14415_1.jpg";
391
        $contentTypeDirectory = media_content_type_dir($thumbnail_representation, 'application');
392

    
393
        $mediaPartHtml = call_user_func_array(
394
          'cdm_media_gallerie_' . $contentTypeDirectory,
395
          array( $thumbnail_representation->parts[0], $maxExtend, TRUE)
396
        );
397
        // --- Compose Media Link.
398
        $mediaLinkUri = FALSE;
399
        if ($alternativeMediaUri) {
400
          if (isset($alternativeMediaUri[$mediaIndex])) {
401
            $mediaLinkUri = $alternativeMediaUri[$mediaIndex];
402
          }
403
          if (is_string($alternativeMediaUri)) {
404
            $mediaLinkUri = $alternativeMediaUri;
405
          }
406
        }
407
        else {
408
          $mediaLinkUri = $full_size_representation->parts[0]->uri;
409
        }
410
        $mediaIndex++;
411

    
412
        // media captions will be loaded via AHAH
413
        _add_js_ahah();
414
        $content_url = cdm_compose_url(CDM_WS_PORTAL_MEDIA, $media->uuid);
415
        $cdm_proxy_url_caption = url('cdm_api/proxy/' . urlencode($content_url) . "/cdm_media_caption/" . serialize($captionElements));
416
        $ahah_media_caption =  '<div class="ahah-content" data-cdm-ahah-url="' . $cdm_proxy_url_caption . '">'
417
          . '<span class="loading" style="display: none;">' . loading_image_html() . '</span></div>';
418

    
419
        // preparing the part link (= click on image itself) which can be handled in two ways
420
        //
421
        //  1. open image in lightbox, the captions in the lightbox will be loaded via AHAH
422
        //  2. open the media in a new window with target 'specimen'
423
        if ($mediaLinkType == 'LIGHTBOX' && $contentTypeDirectory == 'image') {
424
          $mediaPartLinkAttributes['class'] = array('lightbox');
425
        } else {
426
          $mediaPartLinkAttributes['target'] = "specimen";
427
          $openMediaLinkAttributes['target'] = "specimen";
428
        }
429
        $mediaPartLinkAttributes['alt'] = htmlentities($ahah_media_caption);
430

    
431
        // --- preparing the media caption
432

    
433
        /* old comment: "no caption elements to show up here except the $caption_link_uri, if at all"
434
         *
435
         * a.kohlbecker 2013-03-14 :
436
         *   It is unclear why no caption elements should be shown, Was it a technical reason?
437
         *   see commit r16723 740177eb-a1d8-4ec3-a630-accd905eb3da
438
         *   If not problems arise with this remove it after some weeks
439
         */
440
        $captionPartHtml = $ahah_media_caption;
441

    
442
        if ($caption_link_uri) {
443
          if ($contentTypeDirectory == 'image') {
444
            // it is an image, so open it in the media page
445
            $captionPartHtml .= '<div class="media-caption-link">' . l($caption_link_uri, path_to_media($media->uuid), array(
446
                'attributes' => array(), 'html' => TRUE,
447
              )) . '</div>';
448
          }
449
          else {
450
            // otherwise open it directly and let the the browser handle the media type
451
            $openMediaLinkAttributes['absolute'] = TRUE;
452
            $captionPartHtml .= '<div class="media-caption-link">' . l($caption_link_uri, $mediaLinkUri, array(
453
                'attributes' => $openMediaLinkAttributes, 'html' => TRUE,
454
              )) . '</div>';
455
          }
456
        }
457

    
458
        $captionParts[] = $captionPartHtml;
459

    
460
        // --- Surround imagePart with link, this .
461
        if ($doLink) {
462
          $mediaPartHtml = l($mediaPartHtml, $mediaLinkUri, array(
463
            'attributes' => $mediaPartLinkAttributes, 'html' => TRUE,
464
          ));
465
        }
466
      }
467
      else {
468
        $mediaPartHtml = '';
469
        $captionParts[] = '';
470
      }
471
      $out .= '<td class="media">' . $mediaPartHtml . '</td>';
472
    }
473
    $out .= '</tr>'; // End of media parts.
474
    if ($showCaption) {
475
      if ( (is_array($captionElements) && count($captionElements) > 0) || $caption_link_uri) {
476
        $out .= '<tr>';
477
        // Add caption row.
478
        foreach ($captionParts as $captionPartHtml) {
479
          $out .= '<td class="caption">' . $captionPartHtml . '</td>';
480
        }
481
        $out .= '</tr>';
482
      }
483
    }
484
  }
485

    
486
  if ($galleryLinkUri) {
487
    if (count($mediaList) > 0) {
488
      $moreHtml = count($mediaList) . ' ' . t('more in gallery');
489
    }
490
    else {
491
      $moreHtml = t('open gallery');
492
    }
493
    $moreHtml = l($moreHtml, $galleryLinkUri);
494
    $out .= '<tr><td colspan="' . $cols . '">' . $moreHtml . '</td></tr>';
495
  }
496
  $out .= '</table>';
497

    
498
  return $out;
499
}
500

    
501
/**
502
 * Creates markup for a CDM MediaRepresentation which is referencing an image.
503
 *
504
 * @param $mediaRepresentationPart
505
 * @param $maxExtend
506
 * @param $addPassePartout
507
 * @param $attributes
508
 *   An array of attributes for the img tag.
509
 * @return string
510
 *   The markup for the media representation
511
 */
512
function cdm_media_gallerie_image($mediaRepresentationPart, $maxExtend, $addPassePartout, $attributes = array()) {
513

    
514
  $out = '';
515

    
516
  // TODO merge with theme_cdm_media_mime_image?
517
  if (isset($mediaRepresentationPart)) {
518

    
519
    $h = @$mediaRepresentationPart->height;
520
    $w = @$mediaRepresentationPart->width;
521
    if (!($w && $h)) {
522
      // Take url and replace spaces.
523
      $image_uri = str_replace(' ', '%20', $mediaRepresentationPart->uri);
524
      $imageDimensions = getimagesize_remote($image_uri);
525
      if (!$imageDimensions) {
526
        return '<div>' . t('Image unavailable, uri: ') . $mediaRepresentationPart->uri . '</div>';
527
      }
528
      $w = $imageDimensions[0];
529
      $h = $imageDimensions[1];
530
    }
531

    
532
    $ratio = $w / $h;
533
    if ($ratio > 1) {
534
      $displayHeight = round($maxExtend / $ratio);
535
      $displayWidth = $maxExtend;
536
      $m = round(($maxExtend - $displayHeight) / 2);
537
      $margins = 'margin:' . $m . 'px 0 ' . $m . 'px 0;';
538
    }
539
    else {
540
      $displayHeight = $maxExtend;
541
      $displayWidth = round($maxExtend * $ratio);
542
      $m = round(($maxExtend - $displayWidth) / 2);
543
      $margins = 'margin:0 ' . $m . 'px 0 ' . $m . 'px;';
544
    }
545

    
546
    // Turn attributes array into string.
547
    if(!is_array($attributes)){
548
      $attributes = array();
549
    }
550
    if(!isset($attributes['alt'])){
551
      $attributes['alt'] = check_plain($mediaRepresentationPart->uri);
552
    }
553
    $attrStr = ' ';
554
    // $attributes['title'] = 'h:'.$h.', w:'.$w.',ratio:'.$ratio;
555
    if (is_array($attributes)) {
556
      foreach ($attributes as $name => $value) {
557
        $attrStr .= $name . '="' . $value . '" ';
558
      }
559
    }
560

    
561
    if ($addPassePartout) {
562
      $out .= '<div class="image-passe-partout" style="width:' . $maxExtend . 'px; height:' . $maxExtend . 'px;">';
563
    }
564
    else {
565
      // Do not add margins if no pass partout is shown.
566
      $margins = '';
567
    }
568
    $out .= '<img src="' . $mediaRepresentationPart->uri . '" width="' . $displayWidth . '" height="' . $displayHeight . '" style="' . $margins . '"' . $attrStr . ' />';
569

    
570
    if ($addPassePartout) {
571
      $out .= '</div>';
572
    }
573
  }
574

    
575
  return $out;
576
}
577

    
578
/**
579
 * Creates markup for a CDM MediaRepresentation which is referencing an web application.
580
 *
581
 * @param $mediaRepresentationPart
582
 * @param $maxExtend
583
 * @param $addPassePartout
584
 * @param $attributes
585
 * @return string
586
 *   The markup for the media representation
587
 */
588
function cdm_media_gallerie_application($mediaRepresentationPart, $maxExtend, $addPassePartout, $attributes = array()) {
589

    
590
  $out = '';
591

    
592
  if (isset($mediaRepresentationPart)) {
593

    
594
    if ($addPassePartout) {
595
      $out .= '<div class="image-passe-partout" style="width:' . $maxExtend . 'px; height:' . $maxExtend . 'px;">';
596
    }
597
    $out .= '<div class="application">Link to external media resource or web application</div>';
598

    
599
    if ($addPassePartout) {
600
      $out .= '</div>';
601
    }
602
  }
603

    
604
  return $out;
605
}
606

    
607
/**
608
 * Creates markup for a CDM MediaRepresentation which is referencing an web application.
609
 *
610
 * @param $mediaRepresentationPart
611
 * @param $maxExtend
612
 * @param $addPassePartout
613
 * @param $attributes
614
 * @return string
615
 *   The markup for the media representation
616
 */
617
function cdm_media_gallerie_text($mediaRepresentationPart, $maxExtend, $addPassePartout, $attributes = array()) {
618

    
619
  $out = '';
620

    
621
  if (isset($mediaRepresentationPart)) {
622
    if ($addPassePartout) {
623
      $out .= '<div class="image-passe-partout" style="width:' . $maxExtend . 'px; height:' . $maxExtend . 'px;">';
624
    }
625

    
626
    $out .= '<div class="application">Web Application</div>';
627

    
628
    if ($addPassePartout) {
629
      $out .= '</div>';
630
    }
631
  }
632

    
633
  return $out;
634
}
635

    
636
/**
637
 * Adds the OpenLayers based image viewer to the page.
638
 *
639
 * The OpenLayers based image viewer allows to zoom and pan the displayed image.
640
 *
641
 * Documentation related to using Openlayers in order to view images is found here:
642
 *  - @see http://trac.openlayers.org/wiki/UsingCustomTiles#UsingTilesWithoutaProjection
643
 *  - @see http://trac.openlayers.org/wiki/SettingZoomLevels
644
 *
645
 * @param array $variables
646
 *   An associative array of theme variables:
647
 *   - mediaRepresentationPart: The CDM MediaRepresentationPart instance to be displayed.
648
 *   - maxExtend: The maximum extend of the image viewer view port.
649
 */
650
function cdm_openlayers_image($mediaRepresentationPart, $maxExtend) {
651

    
652
  _add_js_openlayers();
653

    
654
  // TODO merge code below with code from theme_cdm_media_gallerie_image
655
  // var_dump("MEDIA URI: " . $mediaRepresentationPart->uri);
656
  // TODO merge code below with code from theme_cdm_media_gallerie_image
657
  $w = @$mediaRepresentationPart->width;
658
  $h = @$mediaRepresentationPart->height;
659

    
660
  if (!($w && $h)) {
661
    // Take url and replace spaces.
662
    $image_uri = str_replace(' ', '%20', $mediaRepresentationPart->uri);
663
    $imageDimensions = getimagesize_remote($image_uri);
664
    if (!$imageDimensions) {
665
      return '<div>' . t('Image unavailable, uri:') . $mediaRepresentationPart->uri . '</div>';
666
    }
667
    $w = $imageDimensions[0];
668
    $h = $imageDimensions[1];
669
  }
670

    
671
  // Calculate maxResolution
672
  if ($w > $h) {
673
    $maxRes = $w / $maxExtend;
674
  }
675
  else {
676
    $maxRes = $h / $maxExtend;
677
  }
678

    
679
  $maxRes *= 1;
680

    
681
  drupal_add_js('
682
 var map;
683

    
684
 var imageLayerOptions={
685
     maxResolution: ' . $maxRes . ',
686
     maxExtent: new OpenLayers.Bounds(0, 0, ' . $w . ', ' . $h . ')
687
  };
688
  var mapOptions={
689
      controls:
690
       [
691
         new OpenLayers.Control.PanZoom(),
692
         new OpenLayers.Control.Navigation({zoomWheelEnabled: false, handleRightClicks:true, zoomBoxKeyMask: OpenLayers.Handler.MOD_CTRL})
693
       ],
694
     restrictedExtent:  new OpenLayers.Bounds(0, 0, ' . $w . ', ' . $h . ')
695
  };
696

    
697
 var graphic = new OpenLayers.Layer.Image(
698
          \'Image Title\',
699
          \'' . $mediaRepresentationPart->uri . '\',
700
          new OpenLayers.Bounds(0, 0, ' . $w . ', ' . $h . '),
701
          new OpenLayers.Size(' . $w . ', ' . $h . '),
702
          imageLayerOptions
703
          );
704

    
705
 function init() {
706
   map = new OpenLayers.Map(\'openlayers_image\', mapOptions);
707
   map.addLayers([graphic]);
708
   map.setCenter(new OpenLayers.LonLat(0, 0), 1);
709
   map.zoomToMaxExtent();
710
 }
711

    
712
jQuery(document).ready(function(){
713
  init();
714
});', array('type' => 'inline'));
715
  $out = '<div id="openlayers_image" class="image_viewer" style="width: ' . $maxExtend . 'px; height:' . ($maxExtend) . 'px"></div>';
716
  return $out;
717
}
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