MediaWiki  1.28.0
DjVuHandler Class Reference

Handler for DjVu images. More...

Inheritance diagram for DjVuHandler:
Collaboration diagram for DjVuHandler:

Public Member Functions

 doTransform ($image, $dstPath, $dstUrl, $params, $flags=0)
 
 getDjVuImage ($image, $path)
 Cache an instance of DjVuImage in an Image object, return that instance. More...
 
 getImageSize ($image, $path)
 
 getMetadata ($image, $path)
 
 getMetadataType ($image)
 
 getMetaTree ($image, $gettext=false)
 Cache a document tree for the DjVu XML metadata. More...
 
 getPageDimensions (File $image, $page)
 
 getPageText (File $image, $page)
 
 getParamMap ()
 
 getScriptParams ($params)
 
 getThumbType ($ext, $mime, $params=null)
 
 isEnabled ()
 
 isExpensiveToThumbnail ($file)
 True if creating thumbnails from the file is large or otherwise resource-intensive. More...
 
 isMetadataValid ($image, $metadata)
 
 isMultiPage ($file)
 
 makeParamString ($params)
 
 mustRender ($file)
 
 pageCount (File $image)
 
 parseParamString ($str)
 
 validateParam ($name, $value)
 
- Public Member Functions inherited from ImageHandler
 canRender ($file)
 
 getDimensionsString ($file)
 
 getImageArea ($image)
 Function that returns the number of pixels to be thumbnailed. More...
 
 getImageSize ($image, $path)
 
 getLongDesc ($file)
 
 getParamMap ()
 
 getScriptedTransform ($image, $script, $params)
 
 getScriptParams ($params)
 
 getShortDesc ($file)
 
 makeParamString ($params)
 
 normaliseParams ($image, &$params)
 
 parseParamString ($str)
 
 sanitizeParamsForBucketing ($params)
 
 validateParam ($name, $value)
 
 validateThumbParams (&$width, &$height, $srcWidth, $srcHeight, $mimeType)
 Validate thumbnail parameters and fill in the correct height. More...
 
- Public Member Functions inherited from MediaHandler
 canAnimateThumbnail ($file)
 If the material is animated, we can animate the thumbnail. More...
 
 canRender ($file)
 True if the handled types can be transformed. More...
 
 canRotate ()
 True if the handler can rotate the media. More...
 
 convertMetadataVersion ($metadata, $version=1)
 Convert metadata version. More...
 
 doTransform ($image, $dstPath, $dstUrl, $params, $flags=0)
 Get a MediaTransformOutput object representing the transformed output. More...
 
 filterThumbnailPurgeList (&$files, $options)
 Remove files from the purge list. More...
 
 formatMetadata ($image, $context=false)
 Get an array structure that looks like this: More...
 
 formatMetadataHelper ($metadataArray, $context=false)
 sorts the visible/invisible field. More...
 
 getAvailableLanguages (File $file)
 Get list of languages file can be viewed in. More...
 
 getCommonMetaArray (File $file)
 Get an array of standard (FormatMetadata type) metadata values. More...
 
 getDefaultRenderLanguage (File $file)
 On file types that support renderings in multiple languages, which language is used by default if unspecified. More...
 
 getDimensionsString ($file)
 Shown in file history box on image description page. More...
 
 getEntireText (File $file)
 Get the text of the entire document. More...
 
 getImageSize ($image, $path)
 Get an image size array like that returned by getimagesize(), or false if it can't be determined. More...
 
 getLength ($file)
 If its an audio file, return the length of the file. More...
 
 getLongDesc ($file)
 Long description. More...
 
 getMetadata ($image, $path)
 Get handler-specific metadata which will be saved in the img_metadata field. More...
 
 getMetadataType ($image)
 Get a string describing the type of metadata, for display purposes. More...
 
 getPageDimensions (File $image, $page)
 Get an associative array of page dimensions Currently "width" and "height" are understood, but this might be expanded in the future. More...
 
 getPageText (File $image, $page)
 Generic getter for text layer. More...
 
 getParamMap ()
 Get an associative array mapping magic word IDs to parameter names. More...
 
 getRotation ($file)
 On supporting image formats, try to read out the low-level orientation of the file and return the angle that the file needs to be rotated to be viewed. More...
 
 getScriptedTransform ($image, $script, $params)
 Get a MediaTransformOutput object representing an alternate of the transformed output which will call an intermediary thumbnail assist script. More...
 
 getShortDesc ($file)
 Short description. More...
 
 getStreamHeaders ($metadata)
 Get useful response headers for GET/HEAD requests for a file with the given metadata. More...
 
 getThumbType ($ext, $mime, $params=null)
 Get the thumbnail extension and MIME type for a given source MIME type. More...
 
 getTransform ($image, $dstPath, $dstUrl, $params)
 Get a MediaTransformOutput object representing the transformed output. More...
 
 getWarningConfig ($file)
 Gets configuration for the file warning message. More...
 
 isAnimatedImage ($file)
 The material is an image, and is animated. More...
 
 isEnabled ()
 False if the handler is disabled for all files. More...
 
 isExpensiveToThumbnail ($file)
 True if creating thumbnails from the file is large or otherwise resource-intensive. More...
 
 isMetadataValid ($image, $metadata)
 Check if the metadata string is valid for this handler. More...
 
 isMultiPage ($file)
 True if the type has multi-page capabilities. More...
 
 isVectorized ($file)
 The material is vectorized and thus scaling is lossless. More...
 
 makeParamString ($params)
 Merge a parameter array into a string appropriate for inclusion in filenames. More...
 
 mustRender ($file)
 True if handled types cannot be displayed directly in a browser but can be rendered. More...
 
 normaliseParams ($image, &$params)
 Changes the parameter array as necessary, ready for transformation. More...
 
 pageCount (File $file)
 Page count for a multi-page document, false if unsupported or unknown. More...
 
 parseParamString ($str)
 Parse a param string made with makeParamString back into an array. More...
 
 parserTransformHook ($parser, $file)
 Modify the parser object post-transform. More...
 
 removeBadFile ($dstPath, $retval=0)
 Check for zero-sized thumbnails. More...
 
 sanitizeParamsForBucketing ($params)
 Returns a normalised params array for which parameters have been cleaned up for bucketing purposes. More...
 
 supportsBucketing ()
 Returns whether or not this handler supports the chained generation of thumbnails according to buckets. More...
 
 validateParam ($name, $value)
 Validate a thumbnail parameter at parse time. More...
 
 verifyUpload ($fileName)
 File validation hook called on upload. More...
 

Public Attributes

const EXPENSIVE_SIZE_LIMIT = 10485760
 
- Public Attributes inherited from MediaHandler
const MAX_ERR_LOG_SIZE = 65535
 Max length of error logged by logErrorForExternalProcess() More...
 
const METADATA_BAD = false
 
const METADATA_COMPATIBLE = 2
 
const METADATA_GOOD = true
 
const TRANSFORM_LATER = 1
 

Protected Member Functions

 getDimensionInfo (File $file)
 
- Protected Member Functions inherited from MediaHandler
 logErrorForExternalProcess ($retval, $err, $cmd)
 Log an error that occurred in an external process. More...
 
 visibleMetadataFields ()
 Get a list of metadata items which should be displayed when the metadata table is collapsed. More...
 

Private Member Functions

 getUnserializedMetadata (File $file)
 Get metadata, unserializing it if neccessary. More...
 

Additional Inherited Members

- Static Public Member Functions inherited from MediaHandler
static fitBoxWidth ($boxWidth, $boxHeight, $maxHeight)
 Calculate the largest thumbnail width for a given original file size such that the thumbnail's height is at most $maxHeight. More...
 
static getGeneralLongDesc ($file)
 Used instead of getLongDesc if there is no handler registered for file. More...
 
static getGeneralShortDesc ($file)
 Used instead of getShortDesc if there is no handler registered for file. More...
 
static getHandler ($type)
 Get a MediaHandler for a given MIME type from the instance cache. More...
 
static getMetadataVersion ()
 Get metadata version. More...
 
- Static Protected Member Functions inherited from MediaHandler
static addMeta (&$array, $visibility, $type, $id, $value, $param=false)
 This is used to generate an array element for each metadata value That array is then used to generate the table of metadata values on the image page. More...
 

Detailed Description

Handler for DjVu images.

Definition at line 29 of file DjVu.php.

Member Function Documentation

DjVuHandler::doTransform (   $image,
  $dstPath,
  $dstUrl,
  $params,
  $flags = 0 
)
Parameters
File$image
string$dstPath
string$dstUrl
array$params
int$flags
Returns
MediaTransformError|ThumbnailImage|TransformParameterError

Definition at line 148 of file DjVu.php.

References $flags, $image, $page, $params, $retval, $wgDjvuPostProcessor, $wgDjvuRenderer, PoolCounterWork\execute(), global, MediaHandler\logErrorForExternalProcess(), ImageHandler\normaliseParams(), MediaHandler\removeBadFile(), text, use, wfDebug(), wfDebugLog(), wfEscapeShellArg(), wfHostname(), wfMessage(), wfMkdirParents(), and wfShellExec().

DjVuHandler::getDimensionInfo ( File  $file)
protected

Definition at line 390 of file DjVu.php.

References $cache, $count, ObjectCache\getMainWANInstance(), getMetaTree(), File\getSha1(), and use.

Referenced by getPageDimensions(), and pageCount().

DjVuHandler::getDjVuImage (   $image,
  $path 
)

Cache an instance of DjVuImage in an Image object, return that instance.

Parameters
File | FSFile$image
string$path
Returns
DjVuImage

Definition at line 242 of file DjVu.php.

References $image, and $path.

Referenced by getImageSize(), and getMetadata().

DjVuHandler::getImageSize (   $image,
  $path 
)

Definition at line 338 of file DjVu.php.

References $image, $path, and getDjVuImage().

DjVuHandler::getMetadata (   $image,
  $path 
)

Definition at line 353 of file DjVu.php.

References $image, $path, getDjVuImage(), serialize(), and wfDebug().

DjVuHandler::getMetadataType (   $image)

Definition at line 365 of file DjVu.php.

DjVuHandler::getMetaTree (   $image,
  $gettext = false 
)

Cache a document tree for the DjVu XML metadata.

Parameters
File$image
bool$gettextDOCUMENT (Default: false)
Returns
bool|SimpleXMLElement

Definition at line 292 of file DjVu.php.

References $e, $image, as, getUnserializedMetadata(), isMetadataValid(), and wfDebug().

Referenced by getDimensionInfo(), and getPageText().

DjVuHandler::getPageDimensions ( File  $image,
  $page 
)

Definition at line 379 of file DjVu.php.

References $page, and getDimensionInfo().

DjVuHandler::getPageText ( File  $image,
  $page 
)
Parameters
File$image
int$pagePage number to get information for
Returns
bool|string Page text or false when no text found.

Definition at line 426 of file DjVu.php.

References $page, and getMetaTree().

DjVuHandler::getParamMap ( )
Returns
array

Definition at line 74 of file DjVu.php.

DjVuHandler::getScriptParams (   $params)
Parameters
array$params
Returns
array

Definition at line 133 of file DjVu.php.

References $params.

DjVuHandler::getThumbType (   $ext,
  $mime,
  $params = null 
)

Definition at line 342 of file DjVu.php.

References $mime, $wgDjvuOutputExtension, global, and MimeMagic\singleton().

DjVuHandler::getUnserializedMetadata ( File  $file)
private

Get metadata, unserializing it if neccessary.

Parameters
File$fileThe DjVu file in question
Returns
string XML metadata as a string.
Exceptions
MWException

Definition at line 261 of file DjVu.php.

References File\getMetadata(), and unserialize().

Referenced by getMetaTree().

DjVuHandler::isEnabled ( )
Returns
bool

Definition at line 35 of file DjVu.php.

References $wgDjvuDump, $wgDjvuRenderer, $wgDjvuToXML, global, and wfDebug().

DjVuHandler::isExpensiveToThumbnail (   $file)

True if creating thumbnails from the file is large or otherwise resource-intensive.

Parameters
File$file
Returns
bool

Definition at line 59 of file DjVu.php.

DjVuHandler::isMetadataValid (   $image,
  $metadata 
)

Definition at line 369 of file DjVu.php.

References serialize().

Referenced by getMetaTree().

DjVuHandler::isMultiPage (   $file)
Parameters
File$file
Returns
bool

Definition at line 67 of file DjVu.php.

DjVuHandler::makeParamString (   $params)
Parameters
array$params
Returns
bool|string

Definition at line 107 of file DjVu.php.

References $page, and $params.

DjVuHandler::mustRender (   $file)
Parameters
File$file
Returns
bool

Definition at line 50 of file DjVu.php.

DjVuHandler::pageCount ( File  $image)

Definition at line 373 of file DjVu.php.

References getDimensionInfo().

Referenced by MockDjVuHandler\doTransform().

DjVuHandler::parseParamString (   $str)
Parameters
string$str
Returns
array|bool

Definition at line 120 of file DjVu.php.

DjVuHandler::validateParam (   $name,
  $value 
)
Parameters
string$name
mixed$value
Returns
bool

Definition at line 86 of file DjVu.php.

References $name, and $value.

Member Data Documentation

const DjVuHandler::EXPENSIVE_SIZE_LIMIT = 10485760

Definition at line 30 of file DjVu.php.


The documentation for this class was generated from the following file: