Generic handler for bitmap images. More...

Inheritance diagram for BitmapHandler:

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Collaboration diagram for BitmapHandler:

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Public Member Functions
	autoRotateEnabled ()

	canRotate ()
	Returns whether the current scaler supports rotation (im and gd do)

	makeParamString ( $params)
	Merge a parameter array into a string appropriate for inclusion in filenames.

	normaliseParams ( $image, &$params)

	parseParamString ( $str)
	Parse a param string made with makeParamString back into an array.

	rotate ( $file, $params)

	validateParam ( $name, $value)
	Validate a thumbnail parameter at parse time.

Public Member Functions inherited from TransformationalImageHandler
	doTransform ( $image, $dstPath, $dstUrl, $params, $flags=0)
	Create a thumbnail.

	escapeMagickInput ( $path, $scene=false)
	Escape a string for ImageMagick's input filenames.

	escapeMagickOutput ( $path, $scene=false)
	Escape a string for ImageMagick's output filename.

	escapeMagickProperty ( $s)
	Escape a string for ImageMagick's property input (e.g.

	extractPreRotationDimensions ( $params, $rotation)
	Extracts the width/height if the image will be scaled before rotating.

	getMediaTransformError ( $params, $errMsg)
	Get a MediaTransformError with error 'thumbnail_error'.

	isImageAreaOkForThumbnaling ( $file, &$params)
	Check if the file is smaller than the maximum image area for thumbnailing.

	mustRender ( $file)
	Returns whether the file needs to be rendered.

Public Member Functions inherited from ImageHandler
	canRender ( $file)

	getDimensionsString ( $file)

	getImageArea ( $image)
	Function that returns the number of pixels to be thumbnailed.

	getImageSize ( $image, $path)
	Get an image size array like that returned by getimagesize(), or false if it can't be determined.

	getLongDesc ( $file)

	getParamMap ()
	Get an associative array mapping magic word IDs to parameter names.

	getScriptedTransform ( $image, $script, $params)

	getScriptParams ( $params)

	getShortDesc ( $file)

	sanitizeParamsForBucketing ( $params)
	Returns a normalised params array for which parameters have been cleaned up for bucketing purposes.

	validateThumbParams (&$width, &$height, $srcWidth, $srcHeight, $mimeType)
	Validate thumbnail parameters and fill in the correct height.

Public Member Functions inherited from MediaHandler
	canAnimateThumbnail ( $file)
	If the material is animated, we can animate the thumbnail.

	convertMetadataVersion ( $metadata, $version=1)
	Convert metadata version.

	filterThumbnailPurgeList (&$files, $options)
	Remove files from the purge list.

	formatMetadata ( $image, $context=false)
	Get an array structure that looks like this:

	formatMetadataHelper ( $metadataArray, $context=false)
	sorts the visible/invisible field.

	getAvailableLanguages (File $file)
	Get list of languages file can be viewed in.

	getCommonMetaArray (File $file)
	Get an array of standard (FormatMetadata type) metadata values.

	getDefaultRenderLanguage (File $file)
	On file types that support renderings in multiple languages, which language is used by default if unspecified.

	getEntireText (File $file)
	Get the text of the entire document.

	getLength ( $file)
	If its an audio file, return the length of the file.

	getMetadata ( $image, $path)
	Get handler-specific metadata which will be saved in the img_metadata field.

	getMetadataType ( $image)
	Get a string describing the type of metadata, for display purposes.

	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.

	getPageText (File $image, $page)
	Generic getter for text layer.

	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.

	getStreamHeaders ( $metadata)
	Get useful response headers for GET/HEAD requests for a file with the given metadata.

	getThumbType ( $ext, $mime, $params=null)
	Get the thumbnail extension and MIME type for a given source MIME type.

	getTransform ( $image, $dstPath, $dstUrl, $params)
	Get a MediaTransformOutput object representing the transformed output.

	getWarningConfig ( $file)
	Gets configuration for the file warning message.

	isAnimatedImage ( $file)
	The material is an image, and is animated.

	isEnabled ()
	False if the handler is disabled for all files.

	isExpensiveToThumbnail ( $file)
	True if creating thumbnails from the file is large or otherwise resource-intensive.

	isMetadataValid ( $image, $metadata)
	Check if the metadata string is valid for this handler.

	isMultiPage ( $file)
	True if the type has multi-page capabilities.

	isVectorized ( $file)
	The material is vectorized and thus scaling is lossless.

	pageCount (File $file)
	Page count for a multi-page document, false if unsupported or unknown.

	parserTransformHook ( $parser, $file)
	Modify the parser object post-transform.

	removeBadFile ( $dstPath, $retval=0)
	Check for zero-sized thumbnails.

	supportsBucketing ()
	Returns whether or not this handler supports the chained generation of thumbnails according to buckets.

	verifyUpload ( $fileName)
	File validation hook called on upload.

Static Public Member Functions
static	imageJpegWrapper ( $dst_image, $thumbPath, $quality=95)
	Callback for transformGd when transforming jpeg images.

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.

static	getGeneralLongDesc ( $file)
	Used instead of getLongDesc if there is no handler registered for file.

static	getGeneralShortDesc ( $file)
	Used instead of getShortDesc if there is no handler registered for file.

static	getHandler ( $type)
	Get a MediaHandler for a given MIME type from the instance cache.

static	getMetadataVersion ()
	Get metadata version.

Protected Member Functions
	getScalerType ( $dstPath, $checkDstPath=true)
	Returns which scaler type should be used.

	imageMagickSubsampling ( $pixelFormat)
	Get ImageMagick subsampling factors for the target JPEG pixel format.

	transformCustom ( $image, $params)
	Transform an image using a custom command.

	transformGd ( $image, $params)
	Transform an image using the built in GD library.

	transformImageMagick ( $image, $params)
	Transform an image using ImageMagick.

	transformImageMagickExt ( $image, $params)
	Transform an image using the Imagick PHP extension.

Protected Member Functions inherited from TransformationalImageHandler
	escapeMagickPath ( $path, $scene=false)
	Armour a string against ImageMagick's GetPathComponent().

	getClientScalingThumbnailImage ( $image, $scalerParams)
	Get a ThumbnailImage that respresents an image that will be scaled client side.

	getMagickVersion ()
	Retrieve the version of the installed ImageMagick You can use PHPs version_compare() to use this value Value is cached for one hour.

	getThumbnailSource ( $file, $params)
	Get the source file for the transform.

Protected Member Functions inherited from MediaHandler
	logErrorForExternalProcess ( $retval, $err, $cmd)
	Log an error that occurred in an external process.

	visibleMetadataFields ()
	Get a list of metadata items which should be displayed when the metadata table is collapsed.

Additional Inherited Members
Public Attributes inherited from MediaHandler
const	MAX_ERR_LOG_SIZE = 65535
	Max length of error logged by logErrorForExternalProcess()

const	METADATA_BAD = false

const	METADATA_COMPATIBLE = 2

const	METADATA_GOOD = true

const	TRANSFORM_LATER = 1

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.