3573d3653f947e3255549c24cf7939c5361b17a4
7 * NOTE FOR WINDOWS USERS:
8 * To enable EXIF functions, add the folloing lines to the
9 * "Windows extensions" section of php.ini:
11 * extension=extensions/php_mbstring.dll
12 * extension=extensions/php_exif.dll
16 * Bump this number when serialized cache records may be incompatible.
18 define( 'MW_IMAGE_VERSION', 1 );
21 * Class to represent an image
23 * Provides methods to retrieve paths (physical, logical, URL),
24 * to generate thumbnails or for uploading.
32 var $name, # name of the image (constructor)
33 $imagePath, # Path of the image (loadFromXxx)
34 $url, # Image URL (accessor)
35 $title, # Title object for this image (constructor)
36 $fileExists, # does the image file exist on disk? (loadFromXxx)
37 $fromSharedDirectory, # load this image from $wgSharedUploadDirectory (loadFromXxx)
38 $historyLine, # Number of line to return by nextHistoryLine() (constructor)
39 $historyRes, # result of the query for the image's history (nextHistoryLine)
42 $bits, # --- returned by getimagesize (loadFromXxx)
44 $type, # MEDIATYPE_xxx (bitmap, drawing, audio...)
45 $mime, # MIME type, determined by MimeMagic::guessMimeType
46 $size, # Size in bytes (loadFromXxx)
48 $dataLoaded, # Whether or not all this has been loaded from the database (loadFromXxx)
49 $lastError; # Error string associated with a thumbnail display error
55 * Create an Image object from an image name
57 * @param string $name name of the image, used to create a title object using Title::makeTitleSafe
60 function newFromName( $name ) {
61 $title = Title
::makeTitleSafe( NS_IMAGE
, $name );
62 if ( is_object( $title ) ) {
63 return new Image( $title );
70 * Obsolete factory function, use constructor
73 function newFromTitle( $title ) {
74 return new Image( $title );
77 function Image( $title ) {
78 if( !is_object( $title ) ) {
79 throw new MWException( 'Image constructor given bogus title.' );
81 $this->title
=& $title;
82 $this->name
= $title->getDBkey();
83 $this->metadata
= serialize ( array() ) ;
85 $n = strrpos( $this->name
, '.' );
86 $this->extension
= Image
::normalizeExtension( $n ?
87 substr( $this->name
, $n +
1 ) : '' );
88 $this->historyLine
= 0;
90 $this->dataLoaded
= false;
95 * Normalize a file extension to the common form, and ensure it's clean.
96 * Extensions with non-alphanumeric characters will be discarded.
98 * @param $ext string (without the .)
101 static function normalizeExtension( $ext ) {
102 $lower = strtolower( $ext );
108 if( isset( $squish[$lower] ) ) {
109 return $squish[$lower];
110 } elseif( preg_match( '/^[0-9a-z]+$/', $lower ) ) {
118 * Get the memcached keys
119 * Returns an array, first element is the local cache key, second is the shared cache key, if there is one
121 function getCacheKeys( ) {
122 global $wgDBname, $wgUseSharedUploads, $wgSharedUploadDBname, $wgCacheSharedUploads;
124 $hashedName = md5($this->name
);
125 $keys = array( "$wgDBname:Image:$hashedName" );
126 if ( $wgUseSharedUploads && $wgSharedUploadDBname && $wgCacheSharedUploads ) {
127 $keys[] = "$wgSharedUploadDBname:Image:$hashedName";
133 * Try to load image metadata from memcached. Returns true on success.
135 function loadFromCache() {
136 global $wgUseSharedUploads, $wgMemc;
137 $fname = 'Image::loadFromMemcached';
138 wfProfileIn( $fname );
139 $this->dataLoaded
= false;
140 $keys = $this->getCacheKeys();
141 $cachedValues = $wgMemc->get( $keys[0] );
143 // Check if the key existed and belongs to this version of MediaWiki
144 if (!empty($cachedValues) && is_array($cachedValues)
145 && isset($cachedValues['version']) && ( $cachedValues['version'] == MW_IMAGE_VERSION
)
146 && $cachedValues['fileExists'] && isset( $cachedValues['mime'] ) && isset( $cachedValues['metadata'] ) )
148 if ( $wgUseSharedUploads && $cachedValues['fromShared']) {
149 # if this is shared file, we need to check if image
150 # in shared repository has not changed
151 if ( isset( $keys[1] ) ) {
152 $commonsCachedValues = $wgMemc->get( $keys[1] );
153 if (!empty($commonsCachedValues) && is_array($commonsCachedValues)
154 && isset($commonsCachedValues['version'])
155 && ( $commonsCachedValues['version'] == MW_IMAGE_VERSION
)
156 && isset($commonsCachedValues['mime'])) {
157 wfDebug( "Pulling image metadata from shared repository cache\n" );
158 $this->name
= $commonsCachedValues['name'];
159 $this->imagePath
= $commonsCachedValues['imagePath'];
160 $this->fileExists
= $commonsCachedValues['fileExists'];
161 $this->width
= $commonsCachedValues['width'];
162 $this->height
= $commonsCachedValues['height'];
163 $this->bits
= $commonsCachedValues['bits'];
164 $this->type
= $commonsCachedValues['type'];
165 $this->mime
= $commonsCachedValues['mime'];
166 $this->metadata
= $commonsCachedValues['metadata'];
167 $this->size
= $commonsCachedValues['size'];
168 $this->fromSharedDirectory
= true;
169 $this->dataLoaded
= true;
170 $this->imagePath
= $this->getFullPath(true);
174 wfDebug( "Pulling image metadata from local cache\n" );
175 $this->name
= $cachedValues['name'];
176 $this->imagePath
= $cachedValues['imagePath'];
177 $this->fileExists
= $cachedValues['fileExists'];
178 $this->width
= $cachedValues['width'];
179 $this->height
= $cachedValues['height'];
180 $this->bits
= $cachedValues['bits'];
181 $this->type
= $cachedValues['type'];
182 $this->mime
= $cachedValues['mime'];
183 $this->metadata
= $cachedValues['metadata'];
184 $this->size
= $cachedValues['size'];
185 $this->fromSharedDirectory
= false;
186 $this->dataLoaded
= true;
187 $this->imagePath
= $this->getFullPath();
190 if ( $this->dataLoaded
) {
191 wfIncrStats( 'image_cache_hit' );
193 wfIncrStats( 'image_cache_miss' );
196 wfProfileOut( $fname );
197 return $this->dataLoaded
;
201 * Save the image metadata to memcached
203 function saveToCache() {
206 $keys = $this->getCacheKeys();
207 if ( $this->fileExists
) {
208 // We can't cache negative metadata for non-existent files,
209 // because if the file later appears in commons, the local
210 // keys won't be purged.
211 $cachedValues = array(
212 'version' => MW_IMAGE_VERSION
,
213 'name' => $this->name
,
214 'imagePath' => $this->imagePath
,
215 'fileExists' => $this->fileExists
,
216 'fromShared' => $this->fromSharedDirectory
,
217 'width' => $this->width
,
218 'height' => $this->height
,
219 'bits' => $this->bits
,
220 'type' => $this->type
,
221 'mime' => $this->mime
,
222 'metadata' => $this->metadata
,
223 'size' => $this->size
);
225 $wgMemc->set( $keys[0], $cachedValues, 60 * 60 * 24 * 7 ); // A week
227 // However we should clear them, so they aren't leftover
228 // if we've deleted the file.
229 $wgMemc->delete( $keys[0] );
234 * Load metadata from the file itself
236 function loadFromFile() {
237 global $wgUseSharedUploads, $wgSharedUploadDirectory, $wgContLang, $wgShowEXIF;
238 $fname = 'Image::loadFromFile';
239 wfProfileIn( $fname );
240 $this->imagePath
= $this->getFullPath();
241 $this->fileExists
= file_exists( $this->imagePath
);
242 $this->fromSharedDirectory
= false;
245 if (!$this->fileExists
) wfDebug("$fname: ".$this->imagePath
." not found locally!\n");
247 # If the file is not found, and a shared upload directory is used, look for it there.
248 if (!$this->fileExists
&& $wgUseSharedUploads && $wgSharedUploadDirectory) {
249 # In case we're on a wgCapitalLinks=false wiki, we
250 # capitalize the first letter of the filename before
251 # looking it up in the shared repository.
252 $sharedImage = Image
::newFromName( $wgContLang->ucfirst($this->name
) );
253 $this->fileExists
= $sharedImage && file_exists( $sharedImage->getFullPath(true) );
254 if ( $this->fileExists
) {
255 $this->name
= $sharedImage->name
;
256 $this->imagePath
= $this->getFullPath(true);
257 $this->fromSharedDirectory
= true;
262 if ( $this->fileExists
) {
263 $magic=& wfGetMimeMagic();
265 $this->mime
= $magic->guessMimeType($this->imagePath
,true);
266 $this->type
= $magic->getMediaType($this->imagePath
,$this->mime
);
269 $this->size
= filesize( $this->imagePath
);
271 $magic=& wfGetMimeMagic();
274 if( $this->mime
== 'image/svg' ) {
275 wfSuppressWarnings();
276 $gis = wfGetSVGsize( $this->imagePath
);
279 elseif ( !$magic->isPHPImageType( $this->mime
) ) {
280 # Don't try to get the width and height of sound and video files, that's bad for performance
283 $gis[2]= 0; //unknown
284 $gis[3]= ""; //width height string
287 wfSuppressWarnings();
288 $gis = getimagesize( $this->imagePath
);
292 wfDebug("$fname: ".$this->imagePath
." loaded, ".$this->size
." bytes, ".$this->mime
.".\n");
297 $gis[2]= 0; //unknown
298 $gis[3]= ""; //width height string
301 $this->type
= MEDIATYPE_UNKNOWN
;
302 wfDebug("$fname: ".$this->imagePath
." NOT FOUND!\n");
305 $this->width
= $gis[0];
306 $this->height
= $gis[1];
308 #NOTE: $gis[2] contains a code for the image type. This is no longer used.
310 #NOTE: we have to set this flag early to avoid load() to be called
311 # be some of the functions below. This may lead to recursion or other bad things!
312 # as ther's only one thread of execution, this should be safe anyway.
313 $this->dataLoaded
= true;
316 $this->metadata
= serialize( $this->retrieveExifData( $this->imagePath
) );
318 if ( isset( $gis['bits'] ) ) $this->bits
= $gis['bits'];
319 else $this->bits
= 0;
321 wfProfileOut( $fname );
325 * Load image metadata from the DB
327 function loadFromDB() {
328 global $wgUseSharedUploads, $wgSharedUploadDBname, $wgSharedUploadDBprefix, $wgContLang;
329 $fname = 'Image::loadFromDB';
330 wfProfileIn( $fname );
332 $dbr =& wfGetDB( DB_SLAVE
);
334 $this->checkDBSchema($dbr);
336 $row = $dbr->selectRow( 'image',
337 array( 'img_size', 'img_width', 'img_height', 'img_bits',
338 'img_media_type', 'img_major_mime', 'img_minor_mime', 'img_metadata' ),
339 array( 'img_name' => $this->name
), $fname );
341 $this->fromSharedDirectory
= false;
342 $this->fileExists
= true;
343 $this->loadFromRow( $row );
344 $this->imagePath
= $this->getFullPath();
345 // Check for rows from a previous schema, quietly upgrade them
346 if ( is_null($this->type
) ) {
349 } elseif ( $wgUseSharedUploads && $wgSharedUploadDBname ) {
350 # In case we're on a wgCapitalLinks=false wiki, we
351 # capitalize the first letter of the filename before
352 # looking it up in the shared repository.
353 $name = $wgContLang->ucfirst($this->name
);
354 $dbc =& wfGetDB( DB_SLAVE
, 'commons' );
356 $row = $dbc->selectRow( "`$wgSharedUploadDBname`.{$wgSharedUploadDBprefix}image",
358 'img_size', 'img_width', 'img_height', 'img_bits',
359 'img_media_type', 'img_major_mime', 'img_minor_mime', 'img_metadata' ),
360 array( 'img_name' => $name ), $fname );
362 $this->fromSharedDirectory
= true;
363 $this->fileExists
= true;
364 $this->imagePath
= $this->getFullPath(true);
366 $this->loadFromRow( $row );
368 // Check for rows from a previous schema, quietly upgrade them
369 if ( is_null($this->type
) ) {
381 $this->fileExists
= false;
382 $this->fromSharedDirectory
= false;
383 $this->metadata
= serialize ( array() ) ;
386 # Unconditionally set loaded=true, we don't want the accessors constantly rechecking
387 $this->dataLoaded
= true;
388 wfProfileOut( $fname );
392 * Load image metadata from a DB result row
394 function loadFromRow( &$row ) {
395 $this->size
= $row->img_size
;
396 $this->width
= $row->img_width
;
397 $this->height
= $row->img_height
;
398 $this->bits
= $row->img_bits
;
399 $this->type
= $row->img_media_type
;
401 $major= $row->img_major_mime
;
402 $minor= $row->img_minor_mime
;
404 if (!$major) $this->mime
= "unknown/unknown";
406 if (!$minor) $minor= "unknown";
407 $this->mime
= $major.'/'.$minor;
410 $this->metadata
= $row->img_metadata
;
411 if ( $this->metadata
== "" ) $this->metadata
= serialize ( array() ) ;
413 $this->dataLoaded
= true;
417 * Load image metadata from cache or DB, unless already loaded
420 global $wgSharedUploadDBname, $wgUseSharedUploads;
421 if ( !$this->dataLoaded
) {
422 if ( !$this->loadFromCache() ) {
424 if ( !$wgSharedUploadDBname && $wgUseSharedUploads ) {
425 $this->loadFromFile();
426 } elseif ( $this->fileExists
) {
427 $this->saveToCache();
430 $this->dataLoaded
= true;
435 * Metadata was loaded from the database, but the row had a marker indicating it needs to be
436 * upgraded from the 1.4 schema, which had no width, height, bits or type. Upgrade the row.
438 function upgradeRow() {
439 global $wgDBname, $wgSharedUploadDBname;
440 $fname = 'Image::upgradeRow';
441 wfProfileIn( $fname );
443 $this->loadFromFile();
445 if ( $this->fromSharedDirectory
) {
446 if ( !$wgSharedUploadDBname ) {
447 wfProfileOut( $fname );
451 // Write to the other DB using selectDB, not database selectors
452 // This avoids breaking replication in MySQL
453 $dbw =& wfGetDB( DB_MASTER
, 'commons' );
454 $dbw->selectDB( $wgSharedUploadDBname );
456 $dbw =& wfGetDB( DB_MASTER
);
459 $this->checkDBSchema($dbw);
461 list( $major, $minor ) = self
::splitMime( $this->mime
);
463 wfDebug("$fname: upgrading ".$this->name
." to 1.5 schema\n");
465 $dbw->update( 'image',
467 'img_width' => $this->width
,
468 'img_height' => $this->height
,
469 'img_bits' => $this->bits
,
470 'img_media_type' => $this->type
,
471 'img_major_mime' => $major,
472 'img_minor_mime' => $minor,
473 'img_metadata' => $this->metadata
,
474 ), array( 'img_name' => $this->name
), $fname
476 if ( $this->fromSharedDirectory
) {
477 $dbw->selectDB( $wgDBname );
479 wfProfileOut( $fname );
483 * Split an internet media type into its two components; if not
484 * a two-part name, set the minor type to 'unknown'.
486 * @param $mime "text/html" etc
487 * @return array ("text", "html") etc
489 static function splitMime( $mime ) {
490 if( strpos( $mime, '/' ) !== false ) {
491 return explode( '/', $mime, 2 );
493 return array( $mime, 'unknown' );
498 * Return the name of this image
506 * Return the associated title object
509 function getTitle() {
514 * Return the URL of the image file
520 if($this->fileExists
) {
521 $this->url
= Image
::imageUrl( $this->name
, $this->fromSharedDirectory
);
529 function getViewURL() {
530 if( $this->mustRender()) {
531 if( $this->canRender() ) {
532 return $this->createThumb( $this->getWidth() );
535 wfDebug('Image::getViewURL(): supposed to render '.$this->name
.' ('.$this->mime
."), but can't!\n");
536 return $this->getURL(); #hm... return NULL?
539 return $this->getURL();
544 * Return the image path of the image in the
545 * local file system as an absolute path
548 function getImagePath() {
550 return $this->imagePath
;
554 * Return the width of the image
556 * Returns -1 if the file specified is not a known image type
559 function getWidth() {
565 * Return the height of the image
567 * Returns -1 if the file specified is not a known image type
570 function getHeight() {
572 return $this->height
;
576 * Return the size of the image file, in bytes
585 * Returns the mime type of the file.
587 function getMimeType() {
593 * Return the type of the media in the file.
594 * Use the value returned by this function with the MEDIATYPE_xxx constants.
596 function getMediaType() {
602 * Checks if the file can be presented to the browser as a bitmap.
604 * Currently, this checks if the file is an image format
605 * that can be converted to a format
606 * supported by all browsers (namely GIF, PNG and JPEG),
607 * or if it is an SVG image and SVG conversion is enabled.
609 * @todo remember the result of this check.
611 function canRender() {
612 global $wgUseImageMagick;
614 if( $this->getWidth()<=0 ||
$this->getHeight()<=0 ) return false;
616 $mime= $this->getMimeType();
618 if (!$mime ||
$mime==='unknown' ||
$mime==='unknown/unknown') return false;
620 #if it's SVG, check if there's a converter enabled
621 if ($mime === 'image/svg') {
622 global $wgSVGConverters, $wgSVGConverter;
624 if ($wgSVGConverter && isset( $wgSVGConverters[$wgSVGConverter])) {
625 wfDebug( "Image::canRender: SVG is ready!\n" );
628 wfDebug( "Image::canRender: SVG renderer missing\n" );
632 #image formats available on ALL browsers
633 if ( $mime === 'image/gif'
634 ||
$mime === 'image/png'
635 ||
$mime === 'image/jpeg' ) return true;
637 #image formats that can be converted to the above formats
638 if ($wgUseImageMagick) {
639 #convertable by ImageMagick (there are more...)
640 if ( $mime === 'image/vnd.wap.wbmp'
641 ||
$mime === 'image/x-xbitmap'
642 ||
$mime === 'image/x-xpixmap'
643 #|| $mime === 'image/x-icon' #file may be split into multiple parts
644 ||
$mime === 'image/x-portable-anymap'
645 ||
$mime === 'image/x-portable-bitmap'
646 ||
$mime === 'image/x-portable-graymap'
647 ||
$mime === 'image/x-portable-pixmap'
648 #|| $mime === 'image/x-photoshop' #this takes a lot of CPU and RAM!
649 ||
$mime === 'image/x-rgb'
650 ||
$mime === 'image/x-bmp'
651 ||
$mime === 'image/tiff' ) return true;
654 #convertable by the PHP GD image lib
655 if ( $mime === 'image/vnd.wap.wbmp'
656 ||
$mime === 'image/x-xbitmap' ) return true;
664 * Return true if the file is of a type that can't be directly
665 * rendered by typical browsers and needs to be re-rasterized.
667 * This returns true for everything but the bitmap types
668 * supported by all browsers, i.e. JPEG; GIF and PNG. It will
669 * also return true for any non-image formats.
673 function mustRender() {
674 $mime= $this->getMimeType();
676 if ( $mime === "image/gif"
677 ||
$mime === "image/png"
678 ||
$mime === "image/jpeg" ) return false;
684 * Determines if this media file may be shown inline on a page.
686 * This is currently synonymous to canRender(), but this could be
687 * extended to also allow inline display of other media,
688 * like flash animations or videos. If you do so, please keep in mind that
689 * that could be a security risk.
691 function allowInlineDisplay() {
692 return $this->canRender();
696 * Determines if this media file is in a format that is unlikely to
697 * contain viruses or malicious content. It uses the global
698 * $wgTrustedMediaFormats list to determine if the file is safe.
700 * This is used to show a warning on the description page of non-safe files.
701 * It may also be used to disallow direct [[media:...]] links to such files.
703 * Note that this function will always return true if allowInlineDisplay()
704 * or isTrustedFile() is true for this file.
706 function isSafeFile() {
707 if ($this->allowInlineDisplay()) return true;
708 if ($this->isTrustedFile()) return true;
710 global $wgTrustedMediaFormats;
712 $type= $this->getMediaType();
713 $mime= $this->getMimeType();
714 #wfDebug("Image::isSafeFile: type= $type, mime= $mime\n");
716 if (!$type ||
$type===MEDIATYPE_UNKNOWN
) return false; #unknown type, not trusted
717 if ( in_array( $type, $wgTrustedMediaFormats) ) return true;
719 if ($mime==="unknown/unknown") return false; #unknown type, not trusted
720 if ( in_array( $mime, $wgTrustedMediaFormats) ) return true;
725 /** Returns true if the file is flagged as trusted. Files flagged that way
726 * can be linked to directly, even if that is not allowed for this type of
729 * This is a dummy function right now and always returns false. It could be
730 * implemented to extract a flag from the database. The trusted flag could be
731 * set on upload, if the user has sufficient privileges, to bypass script-
732 * and html-filters. It may even be coupled with cryptographics signatures
735 function isTrustedFile() {
736 #this could be implemented to check a flag in the databas,
737 #look for signatures, etc
742 * Return the escapeLocalURL of this image
745 function getEscapeLocalURL() {
747 return $this->title
->escapeLocalURL();
751 * Return the escapeFullURL of this image
754 function getEscapeFullURL() {
756 return $this->title
->escapeFullURL();
760 * Return the URL of an image, provided its name.
762 * @param string $name Name of the image, without the leading "Image:"
763 * @param boolean $fromSharedDirectory Should this be in $wgSharedUploadPath?
764 * @return string URL of $name image
768 function imageUrl( $name, $fromSharedDirectory = false ) {
769 global $wgUploadPath,$wgUploadBaseUrl,$wgSharedUploadPath;
770 if($fromSharedDirectory) {
772 $path = $wgSharedUploadPath;
774 $base = $wgUploadBaseUrl;
775 $path = $wgUploadPath;
777 $url = "{$base}{$path}" . wfGetHashPath($name, $fromSharedDirectory) . "{$name}";
778 return wfUrlencode( $url );
782 * Returns true if the image file exists on disk.
783 * @return boolean Whether image file exist on disk.
788 return $this->fileExists
;
795 function thumbUrl( $width, $subdir='thumb') {
796 global $wgUploadPath, $wgUploadBaseUrl, $wgSharedUploadPath;
797 global $wgSharedThumbnailScriptPath, $wgThumbnailScriptPath;
799 // Generate thumb.php URL if possible
803 if ( $this->fromSharedDirectory
) {
804 if ( $wgSharedThumbnailScriptPath ) {
805 $script = $wgSharedThumbnailScriptPath;
808 if ( $wgThumbnailScriptPath ) {
809 $script = $wgThumbnailScriptPath;
813 $url = $script . '?f=' . urlencode( $this->name
) . '&w=' . urlencode( $width );
814 if( $this->mustRender() ) {
818 $name = $this->thumbName( $width );
819 if($this->fromSharedDirectory
) {
821 $path = $wgSharedUploadPath;
823 $base = $wgUploadBaseUrl;
824 $path = $wgUploadPath;
826 if ( Image
::isHashed( $this->fromSharedDirectory
) ) {
827 $url = "{$base}{$path}/{$subdir}" .
828 wfGetHashPath($this->name
, $this->fromSharedDirectory
)
829 . $this->name
.'/'.$name;
830 $url = wfUrlencode( $url );
832 $url = "{$base}{$path}/{$subdir}/{$name}";
835 return array( $script !== false, $url );
839 * Return the file name of a thumbnail of the specified width
841 * @param integer $width Width of the thumbnail image
842 * @param boolean $shared Does the thumbnail come from the shared repository?
845 function thumbName( $width ) {
846 $thumb = $width."px-".$this->name
;
848 if( $this->mustRender() ) {
849 if( $this->canRender() ) {
850 # Rasterize to PNG (for SVG vector images, etc)
854 #should we use iconThumb here to get a symbolic thumbnail?
855 #or should we fail with an internal error?
856 return NULL; //can't make bitmap
863 * Create a thumbnail of the image having the specified width/height.
864 * The thumbnail will not be created if the width is larger than the
865 * image's width. Let the browser do the scaling in this case.
866 * The thumbnail is stored on disk and is only computed if the thumbnail
867 * file does not exist OR if it is older than the image.
870 * Keeps aspect ratio of original image. If both width and height are
871 * specified, the generated image will be no bigger than width x height,
872 * and will also have correct aspect ratio.
874 * @param integer $width maximum width of the generated thumbnail
875 * @param integer $height maximum height of the image (optional)
878 function createThumb( $width, $height=-1 ) {
879 $thumb = $this->getThumbnail( $width, $height );
880 if( is_null( $thumb ) ) return '';
881 return $thumb->getUrl();
885 * As createThumb, but returns a ThumbnailImage object. This can
886 * provide access to the actual file, the real size of the thumb,
887 * and can produce a convenient <img> tag for you.
889 * @param integer $width maximum width of the generated thumbnail
890 * @param integer $height maximum height of the image (optional)
891 * @return ThumbnailImage or null on failure
894 function getThumbnail( $width, $height=-1 ) {
895 if ( $height <= 0 ) {
896 return $this->renderThumb( $width );
900 if ($this->canRender()) {
901 if ( $width > $this->width
* $height / $this->height
)
902 $width = wfFitBoxWidth( $this->width
, $this->height
, $height );
903 $thumb = $this->renderThumb( $width );
905 else $thumb= NULL; #not a bitmap or renderable image, don't try.
911 * @return ThumbnailImage
913 function iconThumb() {
914 global $wgStylePath, $wgStyleDirectory;
916 $try = array( 'fileicon-' . $this->extension
. '.png', 'fileicon.png' );
917 foreach( $try as $icon ) {
918 $path = '/common/images/icons/' . $icon;
919 $filepath = $wgStyleDirectory . $path;
920 if( file_exists( $filepath ) ) {
921 return new ThumbnailImage( $wgStylePath . $path, 120, 120 );
928 * Create a thumbnail of the image having the specified width.
929 * The thumbnail will not be created if the width is larger than the
930 * image's width. Let the browser do the scaling in this case.
931 * The thumbnail is stored on disk and is only computed if the thumbnail
932 * file does not exist OR if it is older than the image.
933 * Returns an object which can return the pathname, URL, and physical
934 * pixel size of the thumbnail -- or null on failure.
936 * @return ThumbnailImage or null on failure
939 function renderThumb( $width, $useScript = true ) {
941 global $wgSVGMaxSize, $wgMaxImageArea, $wgThumbnailEpoch;
943 $fname = 'Image::renderThumb';
944 wfProfileIn( $fname );
946 $width = intval( $width );
949 if ( ! $this->exists() )
951 # If there is no image, there will be no thumbnail
952 wfProfileOut( $fname );
956 # Sanity check $width
957 if( $width <= 0 ||
$this->width
<= 0) {
959 wfProfileOut( $fname );
963 # Don't thumbnail an image so big that it will fill hard drives and send servers into swap
964 # JPEG has the handy property of allowing thumbnailing without full decompression, so we make
965 # an exception for it.
966 if ( $this->getMediaType() == MEDIATYPE_BITMAP
&&
967 $this->getMimeType() !== 'image/jpeg' &&
968 $this->width
* $this->height
> $wgMaxImageArea )
970 wfProfileOut( $fname );
974 # Don't make an image bigger than the source, or wgMaxSVGSize for SVGs
975 if ( $this->mustRender() ) {
976 $width = min( $width, $wgSVGMaxSize );
977 } elseif ( $width > $this->width
- 1 ) {
978 $thumb = new ThumbnailImage( $this->getURL(), $this->getWidth(), $this->getHeight() );
979 wfProfileOut( $fname );
983 $height = round( $this->height
* $width / $this->width
);
985 list( $isScriptUrl, $url ) = $this->thumbUrl( $width );
986 if ( $isScriptUrl && $useScript ) {
987 // Use thumb.php to render the image
988 $thumb = new ThumbnailImage( $url, $width, $height );
989 wfProfileOut( $fname );
993 $thumbName = $this->thumbName( $width, $this->fromSharedDirectory
);
994 $thumbPath = wfImageThumbDir( $this->name
, $this->fromSharedDirectory
).'/'.$thumbName;
996 if ( is_dir( $thumbPath ) ) {
997 // Directory where file should be
998 // This happened occasionally due to broken migration code in 1.5
999 // Rename to broken-*
1000 global $wgUploadDirectory;
1001 for ( $i = 0; $i < 100 ; $i++
) {
1002 $broken = "$wgUploadDirectory/broken-$i-$thumbName";
1003 if ( !file_exists( $broken ) ) {
1004 rename( $thumbPath, $broken );
1008 // Code below will ask if it exists, and the answer is now no
1013 if ( !file_exists( $thumbPath ) ||
1014 filemtime( $thumbPath ) < wfTimestamp( TS_UNIX
, $wgThumbnailEpoch ) ) {
1015 $oldThumbPath = wfDeprecatedThumbDir( $thumbName, 'thumb', $this->fromSharedDirectory
).
1019 // Migration from old directory structure
1020 if ( is_file( $oldThumbPath ) ) {
1021 if ( filemtime($oldThumbPath) >= filemtime($this->imagePath
) ) {
1022 if ( file_exists( $thumbPath ) ) {
1023 if ( !is_dir( $thumbPath ) ) {
1024 // Old image in the way of rename
1025 unlink( $thumbPath );
1027 // This should have been dealt with already
1028 throw new MWException( "Directory where image should be: $thumbPath" );
1031 // Rename the old image into the new location
1032 rename( $oldThumbPath, $thumbPath );
1035 unlink( $oldThumbPath );
1039 $this->lastError
= $this->reallyRenderThumb( $thumbPath, $width, $height );
1040 if ( $this->lastError
=== true ) {
1042 } elseif( $GLOBALS['wgIgnoreImageErrors'] ) {
1043 // Log the error but output anyway.
1044 // With luck it's a transitory error...
1049 # This has to be done after the image is updated and present for all machines on NFS,
1050 # or else the old version might be stored into the squid again
1051 if ( $wgUseSquid ) {
1052 $urlArr = array( $url );
1053 wfPurgeSquidServers($urlArr);
1059 $thumb = new ThumbnailImage( $url, $width, $height, $thumbPath );
1063 wfProfileOut( $fname );
1065 } // END OF function renderThumb
1068 * Really render a thumbnail
1069 * Call this only for images for which canRender() returns true.
1071 * @param string $thumbPath Path to thumbnail
1072 * @param int $width Desired width in pixels
1073 * @param int $height Desired height in pixels
1074 * @return bool True on error, false or error string on failure.
1077 function reallyRenderThumb( $thumbPath, $width, $height ) {
1078 global $wgSVGConverters, $wgSVGConverter;
1079 global $wgUseImageMagick, $wgImageMagickConvertCommand;
1080 global $wgCustomConvertCommand;
1088 if( $this->mime
=== "image/svg" ) {
1089 #Right now we have only SVG
1091 global $wgSVGConverters, $wgSVGConverter;
1092 if( isset( $wgSVGConverters[$wgSVGConverter] ) ) {
1093 global $wgSVGConverterPath;
1095 array( '$path/', '$width', '$height', '$input', '$output' ),
1096 array( $wgSVGConverterPath ?
"$wgSVGConverterPath/" : "",
1099 wfEscapeShellArg( $this->imagePath
),
1100 wfEscapeShellArg( $thumbPath ) ),
1101 $wgSVGConverters[$wgSVGConverter] );
1102 wfProfileIn( 'rsvg' );
1103 wfDebug( "reallyRenderThumb SVG: $cmd\n" );
1104 $err = wfShellExec( $cmd, $retval );
1105 wfProfileOut( 'rsvg' );
1107 } elseif ( $wgUseImageMagick ) {
1110 if ( $this->mime
== 'image/jpeg' ) {
1111 $quality = "-quality 80"; // 80%
1112 } elseif ( $this->mime
== 'image/png' ) {
1113 $quality = "-quality 95"; // zlib 9, adaptive filtering
1115 $quality = ''; // default
1118 # Specify white background color, will be used for transparent images
1119 # in Internet Explorer/Windows instead of default black.
1121 # Note, we specify "-size {$width}" and NOT "-size {$width}x{$height}".
1122 # It seems that ImageMagick has a bug wherein it produces thumbnails of
1123 # the wrong size in the second case.
1125 $cmd = wfEscapeShellArg($wgImageMagickConvertCommand) .
1126 " {$quality} -background white -size {$width} ".
1127 wfEscapeShellArg($this->imagePath
) .
1128 // Coalesce is needed to scale animated GIFs properly (bug 1017).
1130 // For the -resize option a "!" is needed to force exact size,
1131 // or ImageMagick may decide your ratio is wrong and slice off
1133 " -resize " . wfEscapeShellArg( "{$width}x{$height}!" ) .
1135 wfEscapeShellArg($thumbPath) . " 2>&1";
1136 wfDebug("reallyRenderThumb: running ImageMagick: $cmd\n");
1137 wfProfileIn( 'convert' );
1138 $err = wfShellExec( $cmd, $retval );
1139 wfProfileOut( 'convert' );
1140 } elseif( $wgCustomConvertCommand ) {
1141 # Use a custom convert command
1142 # Variables: %s %d %w %h
1143 $src = wfEscapeShellArg( $this->imagePath
);
1144 $dst = wfEscapeShellArg( $thumbPath );
1145 $cmd = $wgCustomConvertCommand;
1146 $cmd = str_replace( '%s', $src, str_replace( '%d', $dst, $cmd ) ); # Filenames
1147 $cmd = str_replace( '%h', $height, str_replace( '%w', $width, $cmd ) ); # Size
1148 wfDebug( "reallyRenderThumb: Running custom convert command $cmd\n" );
1149 wfProfileIn( 'convert' );
1150 $err = wfShellExec( $cmd, $retval );
1151 wfProfileOut( 'convert' );
1153 # Use PHP's builtin GD library functions.
1155 # First find out what kind of file this is, and select the correct
1156 # input routine for this.
1159 'image/gif' => array( 'imagecreatefromgif', 'palette', 'imagegif' ),
1160 'image/jpeg' => array( 'imagecreatefromjpeg', 'truecolor', array( &$this, 'imageJpegWrapper' ) ),
1161 'image/png' => array( 'imagecreatefrompng', 'bits', 'imagepng' ),
1162 'image/vnd.wap.wmbp' => array( 'imagecreatefromwbmp', 'palette', 'imagewbmp' ),
1163 'image/xbm' => array( 'imagecreatefromxbm', 'palette', 'imagexbm' ),
1165 if( !isset( $typemap[$this->mime
] ) ) {
1166 $err = 'Image type not supported';
1167 wfDebug( "$err\n" );
1170 list( $loader, $colorStyle, $saveType ) = $typemap[$this->mime
];
1172 if( !function_exists( $loader ) ) {
1173 $err = "Incomplete GD library configuration: missing function $loader";
1174 wfDebug( "$err\n" );
1177 if( $colorStyle == 'palette' ) {
1179 } elseif( $colorStyle == 'truecolor' ) {
1181 } elseif( $colorStyle == 'bits' ) {
1182 $truecolor = ( $this->bits
> 8 );
1185 $src_image = call_user_func( $loader, $this->imagePath
);
1187 $dst_image = imagecreatetruecolor( $width, $height );
1189 $dst_image = imagecreate( $width, $height );
1191 imagecopyresampled( $dst_image, $src_image,
1193 $width, $height, $this->width
, $this->height
);
1194 call_user_func( $saveType, $dst_image, $thumbPath );
1195 imagedestroy( $dst_image );
1196 imagedestroy( $src_image );
1200 # Check for zero-sized thumbnails. Those can be generated when
1201 # no disk space is available or some other error occurs
1203 if( file_exists( $thumbPath ) ) {
1204 $thumbstat = stat( $thumbPath );
1205 if( $thumbstat['size'] == 0 ||
$retval != 0 ) {
1206 wfDebugLog( 'thumbnail',
1207 sprintf( 'Removing bad %d-byte thumbnail "%s"',
1208 $thumbstat['size'], $thumbPath ) );
1209 unlink( $thumbPath );
1212 if ( $retval != 0 ) {
1213 wfDebugLog( 'thumbnail',
1214 sprintf( 'thumbnail failed on %s: error %d "%s" from "%s"',
1215 wfHostname(), $retval, trim($err), $cmd ) );
1216 return wfMsg( 'thumbnail_error', $err );
1222 function getLastError() {
1223 return $this->lastError
;
1226 function imageJpegWrapper( $dst_image, $thumbPath ) {
1227 imageinterlace( $dst_image );
1228 imagejpeg( $dst_image, $thumbPath, 95 );
1232 * Get all thumbnail names previously generated for this image
1234 function getThumbnails( $shared = false ) {
1235 if ( Image
::isHashed( $shared ) ) {
1238 $dir = wfImageThumbDir( $this->name
, $shared );
1240 // This generates an error on failure, hence the @
1241 $handle = @opendir
( $dir );
1244 while ( false !== ( $file = readdir($handle) ) ) {
1245 if ( $file{0} != '.' ) {
1249 closedir( $handle );
1259 * Refresh metadata in memcached, but don't touch thumbnails or squid
1261 function purgeMetadataCache() {
1263 $this->loadFromFile();
1264 $this->saveToCache();
1268 * Delete all previously generated thumbnails, refresh metadata in memcached and purge the squid
1270 function purgeCache( $archiveFiles = array(), $shared = false ) {
1273 // Refresh metadata cache
1274 $this->purgeMetadataCache();
1276 // Delete thumbnails
1277 $files = $this->getThumbnails( $shared );
1278 $dir = wfImageThumbDir( $this->name
, $shared );
1280 foreach ( $files as $file ) {
1281 if ( preg_match( '/^(\d+)px/', $file, $m ) ) {
1282 $urls[] = $this->thumbUrl( $m[1], $this->fromSharedDirectory
);
1283 @unlink
( "$dir/$file" );
1288 if ( $wgUseSquid ) {
1289 $urls[] = $this->getViewURL();
1290 foreach ( $archiveFiles as $file ) {
1291 $urls[] = wfImageArchiveUrl( $file );
1293 wfPurgeSquidServers( $urls );
1298 * Purge the image description page, but don't go after
1299 * pages using the image. Use when modifying file history
1300 * but not the current data.
1302 function purgeDescription() {
1303 $page = Title
::makeTitle( NS_IMAGE
, $this->name
);
1304 $page->invalidateCache();
1308 * Purge metadata and all affected pages when the image is created,
1309 * deleted, or majorly updated. A set of additional URLs may be
1310 * passed to purge, such as specific image files which have changed.
1311 * @param $urlArray array
1313 function purgeEverything( $urlArr=array() ) {
1314 // Delete thumbnails and refresh image metadata cache
1315 $this->purgeCache();
1316 $this->purgeDescription();
1318 // Purge cache of all pages using this image
1319 $update = new HTMLCacheUpdate( $this->getTitle(), 'imagelinks' );
1320 $update->doUpdate();
1323 function checkDBSchema(&$db) {
1324 global $wgCheckDBSchema;
1325 if (!$wgCheckDBSchema) {
1328 # img_name must be unique
1329 if ( !$db->indexUnique( 'image', 'img_name' ) && !$db->indexExists('image','PRIMARY') ) {
1330 throw new MWException( 'Database schema not up to date, please run maintenance/archives/patch-image_name_unique.sql' );
1333 # new fields must exist
1335 # Not really, there's hundreds of checks like this that we could do and they're all pointless, because
1336 # if the fields are missing, the database will loudly report a query error, the first time you try to do
1337 # something. The only reason I put the above schema check in was because the absence of that particular
1338 # index would lead to an annoying subtle bug. No error message, just some very odd behaviour on duplicate
1341 if ( !$db->fieldExists( 'image', 'img_media_type' )
1342 || !$db->fieldExists( 'image', 'img_metadata' )
1343 || !$db->fieldExists( 'image', 'img_width' ) ) {
1345 throw new MWException( 'Database schema not up to date, please run maintenance/update.php' );
1351 * Return the image history of this image, line by line.
1352 * starts with current version, then old versions.
1353 * uses $this->historyLine to check which line to return:
1354 * 0 return line for current version
1355 * 1 query for old versions, return first one
1356 * 2, ... return next old version from above query
1360 function nextHistoryLine() {
1361 $fname = 'Image::nextHistoryLine()';
1362 $dbr =& wfGetDB( DB_SLAVE
);
1364 $this->checkDBSchema($dbr);
1366 if ( $this->historyLine
== 0 ) {// called for the first time, return line from cur
1367 $this->historyRes
= $dbr->select( 'image',
1371 'img_user','img_user_text',
1375 "'' AS oi_archive_name"
1377 array( 'img_name' => $this->title
->getDBkey() ),
1380 if ( 0 == wfNumRows( $this->historyRes
) ) {
1383 } else if ( $this->historyLine
== 1 ) {
1384 $this->historyRes
= $dbr->select( 'oldimage',
1386 'oi_size AS img_size',
1387 'oi_description AS img_description',
1388 'oi_user AS img_user',
1389 'oi_user_text AS img_user_text',
1390 'oi_timestamp AS img_timestamp',
1391 'oi_width as img_width',
1392 'oi_height as img_height',
1395 array( 'oi_name' => $this->title
->getDBkey() ),
1397 array( 'ORDER BY' => 'oi_timestamp DESC' )
1400 $this->historyLine ++
;
1402 return $dbr->fetchObject( $this->historyRes
);
1406 * Reset the history pointer to the first element of the history
1409 function resetHistory() {
1410 $this->historyLine
= 0;
1414 * Return the full filesystem path to the file. Note that this does
1415 * not mean that a file actually exists under that location.
1417 * This path depends on whether directory hashing is active or not,
1418 * i.e. whether the images are all found in the same directory,
1419 * or in hashed paths like /images/3/3c.
1422 * @param boolean $fromSharedDirectory Return the path to the file
1423 * in a shared repository (see $wgUseSharedRepository and related
1424 * options in DefaultSettings.php) instead of a local one.
1427 function getFullPath( $fromSharedRepository = false ) {
1428 global $wgUploadDirectory, $wgSharedUploadDirectory;
1430 $dir = $fromSharedRepository ?
$wgSharedUploadDirectory :
1433 // $wgSharedUploadDirectory may be false, if thumb.php is used
1435 $fullpath = $dir . wfGetHashPath($this->name
, $fromSharedRepository) . $this->name
;
1447 function isHashed( $shared ) {
1448 global $wgHashedUploadDirectory, $wgHashedSharedUploadDirectory;
1449 return $shared ?
$wgHashedSharedUploadDirectory : $wgHashedUploadDirectory;
1453 * Record an image upload in the upload log and the image table
1455 function recordUpload( $oldver, $desc, $license = '', $copyStatus = '', $source = '', $watch = false ) {
1456 global $wgUser, $wgUseCopyrightUpload;
1458 $fname = 'Image::recordUpload';
1459 $dbw =& wfGetDB( DB_MASTER
);
1461 $this->checkDBSchema($dbw);
1463 // Delete thumbnails and refresh the metadata cache
1464 $this->purgeCache();
1466 // Fail now if the image isn't there
1467 if ( !$this->fileExists ||
$this->fromSharedDirectory
) {
1468 wfDebug( "Image::recordUpload: File ".$this->imagePath
." went missing!\n" );
1472 if ( $wgUseCopyrightUpload ) {
1473 if ( $license != '' ) {
1474 $licensetxt = '== ' . wfMsgForContent( 'license' ) . " ==\n" . '{{' . $license . '}}' . "\n";
1476 $textdesc = '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $desc . "\n" .
1477 '== ' . wfMsgForContent ( 'filestatus' ) . " ==\n" . $copyStatus . "\n" .
1479 '== ' . wfMsgForContent ( 'filesource' ) . " ==\n" . $source ;
1481 if ( $license != '' ) {
1482 $filedesc = $desc == '' ?
'' : '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $desc . "\n";
1483 $textdesc = $filedesc .
1484 '== ' . wfMsgForContent ( 'license' ) . " ==\n" . '{{' . $license . '}}' . "\n";
1490 $now = $dbw->timestamp();
1493 if (strpos($this->mime
,'/')!==false) {
1494 list($major,$minor)= explode('/',$this->mime
,2);
1497 $major= $this->mime
;
1501 # Test to see if the row exists using INSERT IGNORE
1502 # This avoids race conditions by locking the row until the commit, and also
1503 # doesn't deadlock. SELECT FOR UPDATE causes a deadlock for every race condition.
1504 $dbw->insert( 'image',
1506 'img_name' => $this->name
,
1507 'img_size'=> $this->size
,
1508 'img_width' => intval( $this->width
),
1509 'img_height' => intval( $this->height
),
1510 'img_bits' => $this->bits
,
1511 'img_media_type' => $this->type
,
1512 'img_major_mime' => $major,
1513 'img_minor_mime' => $minor,
1514 'img_timestamp' => $now,
1515 'img_description' => $desc,
1516 'img_user' => $wgUser->getID(),
1517 'img_user_text' => $wgUser->getName(),
1518 'img_metadata' => $this->metadata
,
1524 if( $dbw->affectedRows() == 0 ) {
1525 # Collision, this is an update of an image
1526 # Insert previous contents into oldimage
1527 $dbw->insertSelect( 'oldimage', 'image',
1529 'oi_name' => 'img_name',
1530 'oi_archive_name' => $dbw->addQuotes( $oldver ),
1531 'oi_size' => 'img_size',
1532 'oi_width' => 'img_width',
1533 'oi_height' => 'img_height',
1534 'oi_bits' => 'img_bits',
1535 'oi_timestamp' => 'img_timestamp',
1536 'oi_description' => 'img_description',
1537 'oi_user' => 'img_user',
1538 'oi_user_text' => 'img_user_text',
1539 ), array( 'img_name' => $this->name
), $fname
1542 # Update the current image row
1543 $dbw->update( 'image',
1545 'img_size' => $this->size
,
1546 'img_width' => intval( $this->width
),
1547 'img_height' => intval( $this->height
),
1548 'img_bits' => $this->bits
,
1549 'img_media_type' => $this->type
,
1550 'img_major_mime' => $major,
1551 'img_minor_mime' => $minor,
1552 'img_timestamp' => $now,
1553 'img_description' => $desc,
1554 'img_user' => $wgUser->getID(),
1555 'img_user_text' => $wgUser->getName(),
1556 'img_metadata' => $this->metadata
,
1557 ), array( /* WHERE */
1558 'img_name' => $this->name
1562 # This is a new image
1563 # Update the image count
1564 $site_stats = $dbw->tableName( 'site_stats' );
1565 $dbw->query( "UPDATE $site_stats SET ss_images=ss_images+1", $fname );
1568 $descTitle = $this->getTitle();
1569 $article = new Article( $descTitle );
1571 $watch = $watch ||
$wgUser->isWatched( $descTitle );
1572 $suppressRC = true; // There's already a log entry, so don't double the RC load
1574 if( $descTitle->exists() ) {
1575 // TODO: insert a null revision into the page history for this update.
1577 $wgUser->addWatch( $descTitle );
1580 # Invalidate the cache for the description page
1581 $descTitle->invalidateCache();
1582 $descTitle->purgeSquid();
1584 // New image; create the description page.
1585 $article->insertNewArticle( $textdesc, $desc, $minor, $watch, $suppressRC );
1589 $log = new LogPage( 'upload' );
1590 $log->addEntry( 'upload', $descTitle, $desc );
1592 # Commit the transaction now, in case something goes wrong later
1593 # The most important thing is that images don't get lost, especially archives
1594 $dbw->immediateCommit();
1596 # Invalidate cache for all pages using this image
1597 $update = new HTMLCacheUpdate( $this->getTitle(), 'imagelinks' );
1598 $update->doUpdate();
1604 * Get an array of Title objects which are articles which use this image
1605 * Also adds their IDs to the link cache
1607 * This is mostly copied from Title::getLinksTo()
1609 * @deprecated Use HTMLCacheUpdate, this function uses too much memory
1611 function getLinksTo( $options = '' ) {
1612 $fname = 'Image::getLinksTo';
1613 wfProfileIn( $fname );
1616 $db =& wfGetDB( DB_MASTER
);
1618 $db =& wfGetDB( DB_SLAVE
);
1620 $linkCache =& LinkCache
::singleton();
1622 extract( $db->tableNames( 'page', 'imagelinks' ) );
1623 $encName = $db->addQuotes( $this->name
);
1624 $sql = "SELECT page_namespace,page_title,page_id FROM $page,$imagelinks WHERE page_id=il_from AND il_to=$encName $options";
1625 $res = $db->query( $sql, $fname );
1628 if ( $db->numRows( $res ) ) {
1629 while ( $row = $db->fetchObject( $res ) ) {
1630 if ( $titleObj = Title
::makeTitle( $row->page_namespace
, $row->page_title
) ) {
1631 $linkCache->addGoodLinkObj( $row->page_id
, $titleObj );
1632 $retVal[] = $titleObj;
1636 $db->freeResult( $res );
1637 wfProfileOut( $fname );
1642 * Retrive Exif data from the file and prune unrecognized tags
1643 * and/or tags with invalid contents
1648 private function retrieveExifData( $filename ) {
1652 if ( $this->getMimeType() !== "image/jpeg" )
1656 if( $wgShowEXIF && file_exists( $filename ) ) {
1657 $exif = new Exif( $filename );
1658 return $exif->getFilteredData();
1664 function getExifData() {
1666 if ( $this->metadata
=== '0' )
1669 $purge = $wgRequest->getVal( 'action' ) == 'purge';
1670 $ret = unserialize( $this->metadata
);
1672 $oldver = isset( $ret['MEDIAWIKI_EXIF_VERSION'] ) ?
$ret['MEDIAWIKI_EXIF_VERSION'] : 0;
1673 $newver = Exif
::version();
1675 if ( !count( $ret ) ||
$purge ||
$oldver != $newver ) {
1676 $this->purgeMetadataCache();
1677 $this->updateExifData( $newver );
1679 if ( isset( $ret['MEDIAWIKI_EXIF_VERSION'] ) )
1680 unset( $ret['MEDIAWIKI_EXIF_VERSION'] );
1681 $format = new FormatExif( $ret );
1683 return $format->getFormattedData();
1686 function updateExifData( $version ) {
1687 $fname = 'Image:updateExifData';
1689 if ( $this->getImagePath() === false ) # Not a local image
1692 # Get EXIF data from image
1693 $exif = $this->retrieveExifData( $this->imagePath
);
1694 if ( count( $exif ) ) {
1695 $exif['MEDIAWIKI_EXIF_VERSION'] = $version;
1696 $this->metadata
= serialize( $exif );
1698 $this->metadata
= '0';
1701 # Update EXIF data in database
1702 $dbw =& wfGetDB( DB_MASTER
);
1704 $this->checkDBSchema($dbw);
1706 $dbw->update( 'image',
1707 array( 'img_metadata' => $this->metadata
),
1708 array( 'img_name' => $this->name
),
1714 * Returns true if the image does not come from the shared
1719 function isLocal() {
1720 return !$this->fromSharedDirectory
;
1724 * Was this image ever deleted from the wiki?
1728 function wasDeleted() {
1729 $title = Title
::makeTitle( NS_IMAGE
, $this->name
);
1730 return ( $title->isDeleted() > 0 );
1734 * Delete all versions of the image.
1736 * Moves the files into an archive directory (or deletes them)
1737 * and removes the database rows.
1739 * Cache purging is done; logging is caller's responsibility.
1742 * @return true on success, false on some kind of failure
1744 function delete( $reason ) {
1745 $fname = __CLASS__
. '::' . __FUNCTION__
;
1746 $transaction = new FSTransaction();
1747 $urlArr = array( $this->getURL() );
1749 if( !FileStore
::lock() ) {
1750 wfDebug( "$fname: failed to acquire file store lock, aborting\n" );
1755 $dbw = wfGetDB( DB_MASTER
);
1758 // Delete old versions
1759 $result = $dbw->select( 'oldimage',
1760 array( 'oi_archive_name' ),
1761 array( 'oi_name' => $this->name
) );
1763 while( $row = $dbw->fetchObject( $result ) ) {
1764 $oldName = $row->oi_archive_name
;
1766 $transaction->add( $this->prepareDeleteOld( $oldName, $reason ) );
1768 // We'll need to purge this URL from caches...
1769 $urlArr[] = wfImageArchiveUrl( $oldName );
1771 $dbw->freeResult( $result );
1773 // And the current version...
1774 $transaction->add( $this->prepareDeleteCurrent( $reason ) );
1776 $dbw->immediateCommit();
1777 } catch( MWException
$e ) {
1778 wfDebug( "$fname: db error, rolling back file transactions\n" );
1779 $transaction->rollback();
1780 FileStore
::unlock();
1784 wfDebug( "$fname: deleted db items, applying file transactions\n" );
1785 $transaction->commit();
1786 FileStore
::unlock();
1789 // Update site_stats
1790 $site_stats = $dbw->tableName( 'site_stats' );
1791 $dbw->query( "UPDATE $site_stats SET ss_images=ss_images-1", $fname );
1793 $this->purgeEverything( $urlArr );
1800 * Delete an old version of the image.
1802 * Moves the file into an archive directory (or deletes it)
1803 * and removes the database row.
1805 * Cache purging is done; logging is caller's responsibility.
1808 * @throws MWException or FSException on database or filestore failure
1809 * @return true on success, false on some kind of failure
1811 function deleteOld( $archiveName, $reason ) {
1812 $fname = __CLASS__
. '::' . __FUNCTION__
;
1813 $transaction = new FSTransaction();
1816 if( !FileStore
::lock() ) {
1817 wfDebug( "$fname: failed to acquire file store lock, aborting\n" );
1821 $transaction = new FSTransaction();
1823 $dbw = wfGetDB( DB_MASTER
);
1825 $transaction->add( $this->prepareDeleteOld( $archiveName, $reason ) );
1826 $dbw->immediateCommit();
1827 } catch( MWException
$e ) {
1828 wfDebug( "$fname: db error, rolling back file transaction\n" );
1829 $transaction->rollback();
1830 FileStore
::unlock();
1834 wfDebug( "$fname: deleted db items, applying file transaction\n" );
1835 $transaction->commit();
1836 FileStore
::unlock();
1838 $this->purgeDescription();
1842 if ( $wgUseSquid ) {
1844 wfImageArchiveUrl( $archiveName ),
1845 $page->getInternalURL()
1847 wfPurgeSquidServers( $urlArr );
1853 * Delete the current version of a file.
1854 * May throw a database error.
1855 * @return true on success, false on failure
1857 private function prepareDeleteCurrent( $reason ) {
1858 $fname = __CLASS__
. '::' . __FUNCTION__
;
1859 return $this->prepareDeleteVersion(
1860 $this->getFullPath(),
1864 'fa_name' => 'img_name',
1865 'fa_archive_name' => 'NULL',
1866 'fa_size' => 'img_size',
1867 'fa_width' => 'img_width',
1868 'fa_height' => 'img_height',
1869 'fa_metadata' => 'img_metadata',
1870 'fa_bits' => 'img_bits',
1871 'fa_media_type' => 'img_media_type',
1872 'fa_major_mime' => 'img_major_mime',
1873 'fa_minor_mime' => 'img_minor_mime',
1874 'fa_description' => 'img_description',
1875 'fa_user' => 'img_user',
1876 'fa_user_text' => 'img_user_text',
1877 'fa_timestamp' => 'img_timestamp' ),
1878 array( 'img_name' => $this->name
),
1883 * Delete a given older version of a file.
1884 * May throw a database error.
1885 * @return true on success, false on failure
1887 private function prepareDeleteOld( $archiveName, $reason ) {
1888 $fname = __CLASS__
. '::' . __FUNCTION__
;
1889 $oldpath = wfImageArchiveDir( $this->name
) .
1890 DIRECTORY_SEPARATOR
. $archiveName;
1891 return $this->prepareDeleteVersion(
1896 'fa_name' => 'oi_name',
1897 'fa_archive_name' => 'oi_archive_name',
1898 'fa_size' => 'oi_size',
1899 'fa_width' => 'oi_width',
1900 'fa_height' => 'oi_height',
1901 'fa_metadata' => 'NULL',
1902 'fa_bits' => 'oi_bits',
1903 'fa_media_type' => 'NULL',
1904 'fa_major_mime' => 'NULL',
1905 'fa_minor_mime' => 'NULL',
1906 'fa_description' => 'oi_description',
1907 'fa_user' => 'oi_user',
1908 'fa_user_text' => 'oi_user_text',
1909 'fa_timestamp' => 'oi_timestamp' ),
1911 'oi_name' => $this->name
,
1912 'oi_archive_name' => $archiveName ),
1917 * Do the dirty work of backing up an image row and its file
1918 * (if $wgSaveDeletedFiles is on) and removing the originals.
1920 * Must be run while the file store is locked and a database
1921 * transaction is open to avoid race conditions.
1923 * @return FSTransaction
1925 private function prepareDeleteVersion( $path, $reason, $table, $fieldMap, $where, $fname ) {
1926 global $wgUser, $wgSaveDeletedFiles;
1928 // Dupe the file into the file store
1929 if( file_exists( $path ) ) {
1930 if( $wgSaveDeletedFiles ) {
1933 $store = FileStore
::get( $group );
1934 $key = FileStore
::calculateKey( $path, $this->extension
);
1935 $transaction = $store->insert( $key, $path,
1936 FileStore
::DELETE_ORIGINAL
);
1940 $transaction = FileStore
::deleteFile( $path );
1943 wfDebug( "$fname deleting already-missing '$path'; moving on to database\n" );
1946 $transaction = new FSTransaction(); // empty
1949 if( $transaction === false ) {
1951 wfDebug( "$fname: import to file store failed, aborting\n" );
1952 throw new MWException( "Could not archive and delete file $path" );
1956 $dbw = wfGetDB( DB_MASTER
);
1957 $storageMap = array(
1958 'fa_storage_group' => $dbw->addQuotes( $group ),
1959 'fa_storage_key' => $dbw->addQuotes( $key ),
1961 'fa_deleted_user' => $dbw->addQuotes( $wgUser->getId() ),
1962 'fa_deleted_timestamp' => $dbw->timestamp(),
1963 'fa_deleted_reason' => $dbw->addQuotes( $reason ) );
1964 $allFields = array_merge( $storageMap, $fieldMap );
1967 if( $wgSaveDeletedFiles ) {
1968 $dbw->insertSelect( 'filearchive', $table, $allFields, $where, $fname );
1970 $dbw->delete( $table, $where, $fname );
1971 } catch( DBQueryError
$e ) {
1972 // Something went horribly wrong!
1973 // Leave the file as it was...
1974 wfDebug( "$fname: database error, rolling back file transaction\n" );
1975 $transaction->rollback();
1979 return $transaction;
1983 * Restore all or specified deleted revisions to the given file.
1984 * Permissions and logging are left to the caller.
1986 * May throw database exceptions on error.
1988 * @param $versions set of record ids of deleted items to restore,
1989 * or empty to restore all revisions.
1990 * @return the number of file revisions restored if successful,
1991 * or false on failure
1993 function restore( $versions=array() ) {
1994 $fname = __CLASS__
. '::' . __FUNCTION__
;
1995 if( !FileStore
::lock() ) {
1996 wfDebug( "$fname could not acquire filestore lock\n" );
2000 $transaction = new FSTransaction();
2002 $dbw = wfGetDB( DB_MASTER
);
2005 // Re-confirm whether this image presently exists;
2006 // if no we'll need to create an image record for the
2007 // first item we restore.
2008 $exists = $dbw->selectField( 'image', '1',
2009 array( 'img_name' => $this->name
),
2012 // Fetch all or selected archived revisions for the file,
2013 // sorted from the most recent to the oldest.
2014 $conditions = array( 'fa_name' => $this->name
);
2016 $conditions['fa_id'] = $versions;
2019 $result = $dbw->select( 'filearchive', '*',
2022 array( 'ORDER BY' => 'fa_timestamp DESC' ) );
2024 if( $dbw->numRows( $result ) < count( $versions ) ) {
2025 // There's some kind of conflict or confusion;
2026 // we can't restore everything we were asked to.
2027 wfDebug( "$fname: couldn't find requested items\n" );
2029 FileStore
::unlock();
2033 if( $dbw->numRows( $result ) == 0 ) {
2035 wfDebug( "$fname: nothing to do\n" );
2037 FileStore
::unlock();
2042 while( $row = $dbw->fetchObject( $result ) ) {
2044 $store = FileStore
::get( $row->fa_storage_group
);
2046 wfDebug( "$fname: skipping row with no file.\n" );
2050 if( $revisions == 1 && !$exists ) {
2051 $destPath = wfImageDir( $row->fa_name
) .
2052 DIRECTORY_SEPARATOR
.
2055 // We may have to fill in data if this was originally
2056 // an archived file revision.
2057 if( is_null( $row->fa_metadata
) ) {
2058 $tempFile = $store->filePath( $row->fa_storage_key
);
2059 $metadata = serialize( $this->retrieveExifData( $tempFile ) );
2061 $magic = wfGetMimeMagic();
2062 $mime = $magic->guessMimeType( $tempFile, true );
2063 $media_type = $magic->getMediaType( $tempFile, $mime );
2064 list( $major_mime, $minor_mime ) = self
::splitMime( $mime );
2066 $metadata = $row->fa_metadata
;
2067 $major_mime = $row->fa_major_mime
;
2068 $minor_mime = $row->fa_minor_mime
;
2069 $media_type = $row->fa_media_type
;
2074 'img_name' => $row->fa_name
,
2075 'img_size' => $row->fa_size
,
2076 'img_width' => $row->fa_width
,
2077 'img_height' => $row->fa_height
,
2078 'img_metadata' => $metadata,
2079 'img_bits' => $row->fa_bits
,
2080 'img_media_type' => $media_type,
2081 'img_major_mime' => $major_mime,
2082 'img_minor_mime' => $minor_mime,
2083 'img_description' => $row->fa_description
,
2084 'img_user' => $row->fa_user
,
2085 'img_user_text' => $row->fa_user_text
,
2086 'img_timestamp' => $row->fa_timestamp
);
2088 $archiveName = $row->fa_archive_name
;
2089 if( $archiveName == '' ) {
2090 // This was originally a current version; we
2091 // have to devise a new archive name for it.
2092 // Format is <timestamp of archiving>!<name>
2094 wfTimestamp( TS_MW
, $row->fa_deleted_timestamp
) .
2095 '!' . $row->fa_name
;
2097 $destPath = wfImageArchiveDir( $row->fa_name
) .
2098 DIRECTORY_SEPARATOR
. $archiveName;
2100 $table = 'oldimage';
2102 'oi_name' => $row->fa_name
,
2103 'oi_archive_name' => $archiveName,
2104 'oi_size' => $row->fa_size
,
2105 'oi_width' => $row->fa_width
,
2106 'oi_height' => $row->fa_height
,
2107 'oi_bits' => $row->fa_bits
,
2108 'oi_description' => $row->fa_description
,
2109 'oi_user' => $row->fa_user
,
2110 'oi_user_text' => $row->fa_user_text
,
2111 'oi_timestamp' => $row->fa_timestamp
);
2114 $dbw->insert( $table, $fields, $fname );
2115 /// @fixme this delete is not totally safe, potentially
2116 $dbw->delete( 'filearchive',
2117 array( 'fa_id' => $row->fa_id
),
2120 // Check if any other stored revisions use this file;
2121 // if so, we shouldn't remove the file from the deletion
2122 // archives so they will still work.
2123 $useCount = $dbw->selectField( 'filearchive',
2126 'fa_storage_group' => $row->fa_storage_group
,
2127 'fa_storage_key' => $row->fa_storage_key
),
2129 if( $useCount == 0 ) {
2130 wfDebug( "$fname: nothing else using {$row->fa_storage_key}, will deleting after\n" );
2131 $flags = FileStore
::DELETE_ORIGINAL
;
2136 $transaction->add( $store->export( $row->fa_storage_key
,
2137 $destPath, $flags ) );
2140 $dbw->immediateCommit();
2141 } catch( MWException
$e ) {
2142 wfDebug( "$fname caught error, aborting\n" );
2143 $transaction->rollback();
2147 $transaction->commit();
2148 FileStore
::unlock();
2150 if( $revisions > 0 ) {
2152 wfDebug( "$fname restored $revisions items, creating a new current\n" );
2154 // Update site_stats
2155 $site_stats = $dbw->tableName( 'site_stats' );
2156 $dbw->query( "UPDATE $site_stats SET ss_images=ss_images+1", $fname );
2158 $this->purgeEverything();
2160 wfDebug( "$fname restored $revisions as archived versions\n" );
2161 $this->purgeDescription();
2172 * Returns the image directory of an image
2173 * If the directory does not exist, it is created.
2174 * The result is an absolute path.
2176 * This function is called from thumb.php before Setup.php is included
2178 * @param $fname String: file name of the image file.
2181 function wfImageDir( $fname ) {
2182 global $wgUploadDirectory, $wgHashedUploadDirectory;
2184 if (!$wgHashedUploadDirectory) { return $wgUploadDirectory; }
2186 $hash = md5( $fname );
2187 $oldumask = umask(0);
2188 $dest = $wgUploadDirectory . '/' . $hash{0};
2189 if ( ! is_dir( $dest ) ) { mkdir( $dest, 0777 ); }
2190 $dest .= '/' . substr( $hash, 0, 2 );
2191 if ( ! is_dir( $dest ) ) { mkdir( $dest, 0777 ); }
2198 * Returns the image directory of an image's thubnail
2199 * If the directory does not exist, it is created.
2200 * The result is an absolute path.
2202 * This function is called from thumb.php before Setup.php is included
2204 * @param $fname String: file name of the original image file
2205 * @param $shared Boolean: (optional) use the shared upload directory (default: 'false').
2208 function wfImageThumbDir( $fname, $shared = false ) {
2209 $base = wfImageArchiveDir( $fname, 'thumb', $shared );
2210 if ( Image
::isHashed( $shared ) ) {
2211 $dir = "$base/$fname";
2213 if ( !is_dir( $base ) ) {
2214 $oldumask = umask(0);
2215 @mkdir
( $base, 0777 );
2219 if ( ! is_dir( $dir ) ) {
2220 if ( is_file( $dir ) ) {
2221 // Old thumbnail in the way of directory creation, kill it
2224 $oldumask = umask(0);
2225 @mkdir
( $dir, 0777 );
2236 * Old thumbnail directory, kept for conversion
2238 function wfDeprecatedThumbDir( $thumbName , $subdir='thumb', $shared=false) {
2239 return wfImageArchiveDir( $thumbName, $subdir, $shared );
2243 * Returns the image directory of an image's old version
2244 * If the directory does not exist, it is created.
2245 * The result is an absolute path.
2247 * This function is called from thumb.php before Setup.php is included
2249 * @param $fname String: file name of the thumbnail file, including file size prefix.
2250 * @param $subdir String: subdirectory of the image upload directory that should be used for storing the old version. Default is 'archive'.
2251 * @param $shared Boolean use the shared upload directory (only relevant for other functions which call this one). Default is 'false'.
2254 function wfImageArchiveDir( $fname , $subdir='archive', $shared=false ) {
2255 global $wgUploadDirectory, $wgHashedUploadDirectory;
2256 global $wgSharedUploadDirectory, $wgHashedSharedUploadDirectory;
2257 $dir = $shared ?
$wgSharedUploadDirectory : $wgUploadDirectory;
2258 $hashdir = $shared ?
$wgHashedSharedUploadDirectory : $wgHashedUploadDirectory;
2259 if (!$hashdir) { return $dir.'/'.$subdir; }
2260 $hash = md5( $fname );
2261 $oldumask = umask(0);
2263 # Suppress warning messages here; if the file itself can't
2264 # be written we'll worry about it then.
2265 wfSuppressWarnings();
2267 $archive = $dir.'/'.$subdir;
2268 if ( ! is_dir( $archive ) ) { mkdir( $archive, 0777 ); }
2269 $archive .= '/' . $hash{0};
2270 if ( ! is_dir( $archive ) ) { mkdir( $archive, 0777 ); }
2271 $archive .= '/' . substr( $hash, 0, 2 );
2272 if ( ! is_dir( $archive ) ) { mkdir( $archive, 0777 ); }
2274 wfRestoreWarnings();
2281 * Return the hash path component of an image path (URL or filesystem),
2282 * e.g. "/3/3c/", or just "/" if hashing is not used.
2284 * @param $dbkey The filesystem / database name of the file
2285 * @param $fromSharedDirectory Use the shared file repository? It may
2286 * use different hash settings from the local one.
2288 function wfGetHashPath ( $dbkey, $fromSharedDirectory = false ) {
2289 if( Image
::isHashed( $fromSharedDirectory ) ) {
2290 $hash = md5($dbkey);
2291 return '/' . $hash{0} . '/' . substr( $hash, 0, 2 ) . '/';
2298 * Returns the image URL of an image's old version
2300 * @param $name String: file name of the image file
2301 * @param $subdir String: (optional) subdirectory of the image upload directory that is used by the old version. Default is 'archive'
2304 function wfImageArchiveUrl( $name, $subdir='archive' ) {
2305 global $wgUploadPath, $wgHashedUploadDirectory;
2307 if ($wgHashedUploadDirectory) {
2308 $hash = md5( substr( $name, 15) );
2309 $url = $wgUploadPath.'/'.$subdir.'/' . $hash{0} . '/' .
2310 substr( $hash, 0, 2 ) . '/'.$name;
2312 $url = $wgUploadPath.'/'.$subdir.'/'.$name;
2314 return wfUrlencode($url);
2318 * Return a rounded pixel equivalent for a labeled CSS/SVG length.
2319 * http://www.w3.org/TR/SVG11/coords.html#UnitIdentifiers
2321 * @param $length String: CSS/SVG length.
2322 * @return Integer: length in pixels
2324 function wfScaleSVGUnit( $length ) {
2325 static $unitLength = array(
2332 '' => 1.0, // "User units" pixels by default
2333 '%' => 2.0, // Fake it!
2335 if( preg_match( '/^(\d+(?:\.\d+)?)(em|ex|px|pt|pc|cm|mm|in|%|)$/', $length, $matches ) ) {
2336 $length = floatval( $matches[1] );
2337 $unit = $matches[2];
2338 return round( $length * $unitLength[$unit] );
2341 return round( floatval( $length ) );
2346 * Compatible with PHP getimagesize()
2347 * @todo support gzipped SVGZ
2348 * @todo check XML more carefully
2349 * @todo sensible defaults
2351 * @param $filename String: full name of the file (passed to php fopen()).
2354 function wfGetSVGsize( $filename ) {
2358 // Read a chunk of the file
2359 $f = fopen( $filename, "rt" );
2360 if( !$f ) return false;
2361 $chunk = fread( $f, 4096 );
2364 // Uber-crappy hack! Run through a real XML parser.
2365 if( !preg_match( '/<svg\s*([^>]*)\s*>/s', $chunk, $matches ) ) {
2369 if( preg_match( '/\bwidth\s*=\s*("[^"]+"|\'[^\']+\')/s', $tag, $matches ) ) {
2370 $width = wfScaleSVGUnit( trim( substr( $matches[1], 1, -1 ) ) );
2372 if( preg_match( '/\bheight\s*=\s*("[^"]+"|\'[^\']+\')/s', $tag, $matches ) ) {
2373 $height = wfScaleSVGUnit( trim( substr( $matches[1], 1, -1 ) ) );
2376 return array( $width, $height, 'SVG',
2377 "width=\"$width\" height=\"$height\"" );
2381 * Determine if an image exists on the 'bad image list'.
2383 * @param $name String: the image name to check
2386 function wfIsBadImage( $name ) {
2387 static $titleList = false;
2390 # Build the list now
2391 $titleList = array();
2392 $lines = explode( "\n", wfMsgForContent( 'bad_image_list' ) );
2393 foreach( $lines as $line ) {
2394 if( preg_match( '/^\*\s*\[\[:?(.*?)\]\]/i', $line, $matches ) ) {
2395 $title = Title
::newFromText( $matches[1] );
2396 if( is_object( $title ) && $title->getNamespace() == NS_IMAGE
)
2397 $titleList[ $title->getDBkey() ] = true;
2401 return array_key_exists( $name, $titleList );
2407 * Wrapper class for thumbnail images
2408 * @package MediaWiki
2410 class ThumbnailImage
{
2412 * @param string $path Filesystem path to the thumb
2413 * @param string $url URL path to the thumb
2416 function ThumbnailImage( $url, $width, $height, $path = false ) {
2418 $this->width
= round( $width );
2419 $this->height
= round( $height );
2420 # These should be integers when they get here.
2421 # If not, there's a bug somewhere. But let's at
2422 # least produce valid HTML code regardless.
2423 $this->path
= $path;
2427 * @return string The thumbnail URL
2434 * Return HTML <img ... /> tag for the thumbnail, will include
2435 * width and height attributes and a blank alt text (as required).
2437 * You can set or override additional attributes by passing an
2438 * associative array of name => data pairs. The data will be escaped
2439 * for HTML output, so should be in plaintext.
2441 * @param array $attribs
2445 function toHtml( $attribs = array() ) {
2446 $attribs['src'] = $this->url
;
2447 $attribs['width'] = $this->width
;
2448 $attribs['height'] = $this->height
;
2449 if( !isset( $attribs['alt'] ) ) $attribs['alt'] = '';
2452 foreach( $attribs as $name => $data ) {
2453 $html .= $name . '="' . htmlspecialchars( $data ) . '" ';
2462 * Calculate the largest thumbnail width for a given original file size
2463 * such that the thumbnail's height is at most $maxHeight.
2464 * @param $boxWidth Integer Width of the thumbnail box.
2465 * @param $boxHeight Integer Height of the thumbnail box.
2466 * @param $maxHeight Integer Maximum height expected for the thumbnail.
2469 function wfFitBoxWidth( $boxWidth, $boxHeight, $maxHeight ) {
2470 $idealWidth = $boxWidth * $maxHeight / $boxHeight;
2471 $roundedUp = ceil( $idealWidth );
2472 if( round( $roundedUp * $boxHeight / $boxWidth ) > $maxHeight )
2473 return floor( $idealWidth );