com.itextpdf.pdfoptimizer.handlers

Class ImageQualityOptimizer

java.lang.Object

com.itextpdf.pdfoptimizer.AbstractOptimizationHandler

com.itextpdf.pdfoptimizer.handlers.ImageQualityOptimizer

public class ImageQualityOptimizer
extends AbstractOptimizationHandler

Looks for image streams and performs theirs optimization.

Constructor Summary

Constructors

Constructor and Description
ImageQualityOptimizer() Creates an empty image quality optimizer.
ImageQualityOptimizer(MapIImageProcessor> processors) Creates a new image quality optimizer with custom configuration of image processors.

Method Summary

Modifier and Type	Method and Description
MapIImageProcessor>	getImageProcessors() Gets a copy of current configuration of the image processor.
PdfImageXObjectPredicate	getPredicate() Gets current search predicate.
protected void	optimizePdf(com.itextpdf.kernel.pdf.PdfDocument document, OptimizationSession session) The method searches across all the document and for each found PdfImageXObject performs an optimization according to its type.
ImageQualityOptimizer	setJBig2Processor(IImageProcessor processor) Sets a processor for ImageType.JBIG2 images.
ImageQualityOptimizer	setJpeg2000Processor(IImageProcessor processor) Sets a processor for ImageType.JPEG2000 images.
ImageQualityOptimizer	setJpegProcessor(IImageProcessor processor) Sets a processor for ImageType.JPEG images.
ImageQualityOptimizer	setPngProcessor(IImageProcessor processor) Sets a processor for ImageType.PNG images.
ImageQualityOptimizer	setPredicate(PdfImageXObjectPredicate predicate) Sets a search predicate.
ImageQualityOptimizer	setTiffProcessor(IImageProcessor processor) Sets a processor for ImageType.TIFF images.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ImageQualityOptimizer

public ImageQualityOptimizer()

Creates an empty image quality optimizer.

ImageQualityOptimizer

public ImageQualityOptimizer(MapIImageProcessor> processors)

Creates a new image quality optimizer with custom configuration of image processors. Note that type of the image is identifying based on PdfImageXObject.identifyImageType() call.

Parameters:

processors - is a map where image types are associated with processors for them

See Also:

PdfImageXObject.identifyImageType()

Method Detail

setJpegProcessor

public ImageQualityOptimizer setJpegProcessor(IImageProcessor processor)

Sets a processor for ImageType.JPEG images. Note that type of the image is identifying based on PdfImageXObject.identifyImageType() call.

Parameters:

processor - is an image processor to set

Returns:

this instance

See Also:

PdfImageXObject.identifyImageType()

setJpeg2000Processor

public ImageQualityOptimizer setJpeg2000Processor(IImageProcessor processor)

Sets a processor for ImageType.JPEG2000 images. Note that type of the image is identifying based on PdfImageXObject.identifyImageType() call.

Parameters:

processor - is an image processor to set

Returns:

this instance

See Also:

PdfImageXObject.identifyImageType()

setJBig2Processor

public ImageQualityOptimizer setJBig2Processor(IImageProcessor processor)

Sets a processor for ImageType.JBIG2 images. Note that type of the image is identifying based on PdfImageXObject.identifyImageType() call.

Parameters:

processor - is an image processor to set

Returns:

this instance

See Also:

PdfImageXObject.identifyImageType()

setTiffProcessor

public ImageQualityOptimizer setTiffProcessor(IImageProcessor processor)

Sets a processor for ImageType.TIFF images. Note that type of the image is identifying based on PdfImageXObject.identifyImageType() call.

Parameters:

processor - is an image processor to set

Returns:

this instance

See Also:

PdfImageXObject.identifyImageType()

setPngProcessor

public ImageQualityOptimizer setPngProcessor(IImageProcessor processor)

Sets a processor for ImageType.PNG images. Note that type of the image is identifying based on PdfImageXObject.identifyImageType() call.

Parameters:

processor - is an image processor to set

Returns:

this instance

See Also:

PdfImageXObject.identifyImageType()

setPredicate

public ImageQualityOptimizer setPredicate(PdfImageXObjectPredicate predicate)

Sets a search predicate. Allows to provide custom implementation of PdfImageXObjectPredicate with overridden method PdfImageXObjectPredicate.customCondition(PdfObject) to skip some types of images during optimization process.

Parameters:

predicate - is a predicate to set

Returns:

this instance

getPredicate

public PdfImageXObjectPredicate getPredicate()

Gets current search predicate. If it was not set return default implementation.

Returns:

search predicate.

getImageProcessors

public MapIImageProcessor> getImageProcessors()

Gets a copy of current configuration of the image processor.

Returns:

a map where ImageType keys are associated with actual IImageProcessor

optimizePdf

protected void optimizePdf(com.itextpdf.kernel.pdf.PdfDocument document,
                           OptimizationSession session)

The method searches across all the document and for each found PdfImageXObject performs an optimization according to its type.

Specified by:

optimizePdf in class AbstractOptimizationHandler

Parameters:

document - is the PDF document to optimize. Invocation of the method can change the state of the object

session - is an auxiliary object used to support share data between stages of optimization process