Class Optimizer.MonoImageSettings

A class that stores image downsampling/recompression settings for monochrome images.

Inheritance

System.Object

Optimizer.MonoImageSettings

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ToString()

System.Object.ReferenceEquals(System.Object, System.Object)

Namespace: pdftron.PDF

Assembly: PDFNetiOS.dll

Syntax

public class MonoImageSettings

Constructors

MonoImageSettings()

create an MonoImageSettings object with default options

Declaration

public MonoImageSettings()

Methods

ForceChanges(Boolean)

Sets whether image changes that grow the PDF file should be kept. This is off by default.

Declaration

public void ForceChanges(bool force)

Parameters

Type	Name	Description
System.Boolean	force	if true all image changes will be kept.

ForceRecompression(Boolean)

Declaration

public void ForceRecompression(bool force)

Parameters

Type	Name	Description
System.Boolean	force

SetCompressionMode(Optimizer.MonoImageSettings.CompressionMode)

Sets the output compression mode for monochrome images The default value is e_ccitt (CCITT group 4 compression)

Declaration

public void SetCompressionMode(Optimizer.MonoImageSettings.CompressionMode mode)

Parameters

Type	Name	Description
Optimizer.MonoImageSettings.CompressionMode	mode	the compression mode to set

SetDownsampleMode(Optimizer.MonoImageSettings.DownsampleMode)

Sets the downsample mode for monochrome images The default value is e_default

Declaration

public void SetDownsampleMode(Optimizer.MonoImageSettings.DownsampleMode mode)

Parameters

Type	Name	Description
Optimizer.MonoImageSettings.DownsampleMode	mode	the compression mode to set

SetImageDPI(Double, Double)

Sets the maximum and resampling dpi for monochrome images. By default these are set to 144 and 96 respectively.

Declaration

public void SetImageDPI(double maximum, double resampling)

Parameters

Type	Name	Description
System.Double	maximum	the highest dpi of an image before it will be resampled
System.Double	resampling	the image dpi to resample to if an image is encountered over the maximum dpi

SetJBIG2Threshold(Double)

Sets the quality for lossy JBIG2Decode compression mode. The threshold is a floating point number in the range from 4 to 9 The default value for JBIG2 is 8.5. The setting is ignored for FLATE.

Declaration

public void SetJBIG2Threshold(double jbig2_threshold)

Parameters

Type	Name	Description
System.Double	jbig2_threshold	The jbig2 threshold value