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TiffHandler Class Reference

Handler for Tiff images. More...

Inheritance diagram for TiffHandler:
Collaboration diagram for TiffHandler:

Public Member Functions

 canRender ( $file)
 Conversion to PNG for inline display can be disabled here... More...
 
 getMetadata ( $image, $filename)
 
 getThumbType ( $ext, $mime, $params=null)
 
 isExpensiveToThumbnail ( $file)
 True if creating thumbnails from the file is large or otherwise resource-intensive. More...
 
 mustRender ( $file)
 Browsers don't support TIFF inline generally... More...
 
- Public Member Functions inherited from ExifBitmapHandler
 convertMetadataVersion ( $metadata, $version=1)
 Convert metadata version. More...
 
 formatMetadata ( $image, $context=false)
 
 getCommonMetaArray (File $file)
 Get an array of standard (FormatMetadata type) metadata values. More...
 
 getImageSize ( $image, $path)
 Wrapper for base classes ImageHandler::getImageSize() that checks for rotation reported from metadata and swaps the sizes to match. More...
 
 getMetadataType ( $image)
 Get a string describing the type of metadata, for display purposes. 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...
 
 isMetadataValid ( $image, $metadata)
 
- Public Member Functions inherited from BitmapHandler
 autoRotateEnabled ()
 
 canRotate ()
 Returns whether the current scaler supports rotation (im and gd do) Stable to override. More...
 
 makeParamString ( $params)
 Merge a parameter array into a string appropriate for inclusion in filenames.
Parameters
array$paramsArray of parameters that have been through normaliseParams.
Returns
string
Stable to override Stable to override More...
 
 normaliseParams ( $image, &$params)
 Stable to override. More...
 
 parseParamString ( $str)
 Parse a param string made with makeParamString back into an array.
Parameters
string$strThe parameter string without file name (e.g. 122px)
Returns
array|bool Array of parameters or false on failure.
Stable to override Stable to override More...
 
 rotate ( $file, $params)
 Stable to override. More...
 
 validateParam ( $name, $value)
 Validate a thumbnail parameter at parse time.Return true to accept the parameter, and false to reject it. If you return false, the parser will do something quiet and forgiving.
Parameters
string$name
mixed$value
Stable to override Stable to override More...
 
- Public Member Functions inherited from TransformationalImageHandler
 doTransform ( $image, $dstPath, $dstUrl, $params, $flags=0)
 Create a thumbnail. More...
 
 extractPreRotationDimensions ( $params, $rotation)
 Extracts the width/height if the image will be scaled before rotating. More...
 
 getMediaTransformError ( $params, $errMsg)
 Get a MediaTransformError with error 'thumbnail_error'. More...
 
 isImageAreaOkForThumbnaling ( $file, &$params)
 Check if the file is smaller than the maximum image area for thumbnailing. More...
 
- Public Member Functions inherited from ImageHandler
 getDimensionsString ( $file)
 Shown in file history box on image description page.Stable to override
Parameters
File$file
Returns
string Dimensions
Stable to override More...
 
 getImageArea ( $image)
 Function that returns the number of pixels to be thumbnailed. More...
 
 getLongDesc ( $file)
 Long description.Shown under image on image description page surounded by ().Stable to override
Parameters
File$file
Returns
string
Stable to override More...
 
 getParamMap ()
 Get an associative array mapping magic word IDs to parameter names.Will be used by the parser to identify parameters. Stable to override More...
 
 getScriptedTransform ( $image, $script, $params)
 Get a MediaTransformOutput object representing an alternate of the transformed output which will call an intermediary thumbnail assist script.Used when the repository has a thumbnailScriptUrl option configured.Return false to fall back to the regular getTransform().Stable to override
Parameters
File$image
string$script
array$params
Returns
bool|ThumbnailImage
Stable to override More...
 
 getShortDesc ( $file)
 Short description.Shown on Special:Search results.Stable to override
Parameters
File$file
Returns
string
Stable to override More...
 
 sanitizeParamsForBucketing ( $params)
 Returns a normalised params array for which parameters have been cleaned up for bucketing purposes Stable to override.
Parameters
array$params
Returns
array
Stable to override More...
 
- Public Member Functions inherited from MediaHandler
 canAnimateThumbnail ( $file)
 If the material is animated, we can animate the thumbnail. More...
 
 filterThumbnailPurgeList (&$files, $options)
 Remove files from the purge list. More...
 
 getAvailableLanguages (File $file)
 Get list of languages file can be viewed in. More...
 
 getContentHeaders ( $metadata)
 Get useful response headers for GET/HEAD requests for a file with the given metadata Stable to override. More...
 
 getDefaultRenderLanguage (File $file)
 On file types that support renderings in multiple languages, which language is used by default if unspecified. More...
 
 getEntireText (File $file)
 Get the text of the entire document. More...
 
 getLength ( $file)
 If its an audio file, return the length of the file. More...
 
 getMatchedLanguage ( $userPreferredLanguage, array $availableLanguages)
 When overridden in a descendant class, returns a language code most suiting. 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...
 
 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 Stable to override. More...
 
 isMultiPage ( $file)
 True if the type has multi-page capabilities. More...
 
 isVectorized ( $file)
 The material is vectorized and thus scaling is lossless. More...
 
 pageCount (File $file)
 Page count for a multi-page document, false if unsupported or unknown. More...
 
 parserTransformHook ( $parser, $file)
 Modify the parser object post-transform. More...
 
 removeBadFile ( $dstPath, $retval=0)
 Check for zero-sized thumbnails. More...
 
 supportsBucketing ()
 Returns whether or not this handler supports the chained generation of thumbnails according to buckets Stable to override. More...
 
 verifyUpload ( $fileName)
 File validation hook called on upload. More...
 

Private Attributes

const EXPENSIVE_SIZE_LIMIT = 10485760
 TIFF files over 10M are considered expensive to thumbnail. More...
 

Additional Inherited Members

- Static Public Member Functions inherited from BitmapHandler
static imageJpegWrapper ( $dst_image, $thumbPath, $quality=null)
 Callback for transformGd when transforming jpeg images. More...
 
- 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 getPageRangesByDimensions ( $pagesByDimensions)
 Converts a dimensions array about a potentially multipage document from an exhaustive list of ordered page numbers to a list of page ranges. More...
 
- Public Attributes inherited from ExifBitmapHandler
const BROKEN_FILE = '-1'
 Error extracting metadata. More...
 
const OLD_BROKEN_FILE = '0'
 Outdated error extracting metadata. More...
 
- Public Attributes inherited from MediaHandler
const METADATA_BAD = false
 
const METADATA_COMPATIBLE = 2
 
const METADATA_GOOD = true
 
const TRANSFORM_LATER = 1
 
- Protected Member Functions inherited from ExifBitmapHandler
 getRotationForExif ( $data)
 Given a chunk of serialized Exif metadata, return the orientation as degrees of rotation. More...
 
- Protected Member Functions inherited from BitmapHandler
 getScalerType ( $dstPath, $checkDstPath=true)
 Returns which scaler type should be used. More...
 
 imageMagickSubsampling ( $pixelFormat)
 Get ImageMagick subsampling factors for the target JPEG pixel format. More...
 
 transformCustom ( $image, $params)
 Transform an image using a custom command. More...
 
 transformGd ( $image, $params)
 Transform an image using the built in GD library. More...
 
 transformImageMagick ( $image, $params)
 Transform an image using ImageMagick Stable to override. More...
 
 transformImageMagickExt ( $image, $params)
 Transform an image using the Imagick PHP extension. More...
 
- Protected Member Functions inherited from TransformationalImageHandler
 escapeMagickInput ( $path, $scene=false)
 Escape a string for ImageMagick's input filenames. More...
 
 escapeMagickOutput ( $path, $scene=false)
 Escape a string for ImageMagick's output filename. More...
 
 escapeMagickPath ( $path, $scene=false)
 Armour a string against ImageMagick's GetPathComponent(). More...
 
 escapeMagickProperty ( $s)
 Escape a string for ImageMagick's property input (e.g. More...
 
 getClientScalingThumbnailImage ( $image, $scalerParams)
 Get a ThumbnailImage that respresents an image that will be scaled client side. More...
 
 getMagickVersion ()
 Retrieve the version of the installed ImageMagick You can use PHPs version_compare() to use this value Value is cached for one hour. More...
 
 getThumbnailSource ( $file, $params)
 Get the source file for the transform. More...
 
- Protected Member Functions inherited from ImageHandler
 getScriptParams ( $params)
 Stable to override More...
 
- Protected Member Functions inherited from MediaHandler
 formatMetadataHelper ( $metadataArray, $context=false)
 sorts the visible/invisible field. More...
 
 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...
 
- 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 Tiff images.

Definition at line 29 of file TiffHandler.php.

Member Function Documentation

◆ canRender()

TiffHandler::canRender (   $file)

Conversion to PNG for inline display can be disabled here...

Note scaling should work with ImageMagick, but may not with GD scaling.

Files pulled from an another MediaWiki instance via ForeignAPIRepo / InstantCommons will have thumbnails managed from the remote instance, so we can skip this check.

Parameters
File$file
Returns
bool

Reimplemented from ImageHandler.

Definition at line 46 of file TiffHandler.php.

References $file, and $wgTiffThumbnailType.

◆ getMetadata()

TiffHandler::getMetadata (   $image,
  $filename 
)
Parameters
File | FSFile$image
string$filename
Exceptions
MWException
Returns
string

Reimplemented from MediaHandler.

Definition at line 82 of file TiffHandler.php.

References $wgShowEXIF, ExifBitmapHandler\BROKEN_FILE, serialize(), BitmapMetadataHandler\Tiff(), Exif\version(), and wfDebug().

◆ getThumbType()

TiffHandler::getThumbType (   $ext,
  $mime,
  $params = null 
)
Parameters
string$ext
string$mime
array | null$params
Returns
array

Reimplemented from MediaHandler.

Definition at line 70 of file TiffHandler.php.

References $wgTiffThumbnailType.

◆ isExpensiveToThumbnail()

TiffHandler::isExpensiveToThumbnail (   $file)

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

Stable to override

Parameters
File$file
Returns
bool

Reimplemented from MediaHandler.

Definition at line 107 of file TiffHandler.php.

References $file.

◆ mustRender()

TiffHandler::mustRender (   $file)

Browsers don't support TIFF inline generally...

For inline display, we need to convert to PNG.

Parameters
File$file
Returns
bool

Reimplemented from TransformationalImageHandler.

Definition at line 60 of file TiffHandler.php.

Member Data Documentation

◆ EXPENSIVE_SIZE_LIMIT

const TiffHandler::EXPENSIVE_SIZE_LIMIT = 10485760
private

TIFF files over 10M are considered expensive to thumbnail.

Definition at line 33 of file TiffHandler.php.


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