PDFRasterizer Class

PDFRasterizer is a low-level PDF rasterizer. The main purpose of this class is to convert PDF pages to raster images (or bitmaps). PDFRasterizer is a relatively low-level class. If you need to convert PDF page to an image format or a Bitmap, consider using PDF::PDFDraw. Similarly, if you are building an interactive PDF viewing application use PDF::PDFViewCtrl instead.

Inheritance Hierarchy

SystemObject
pdftron.PDFPDFRasterizer

Namespace: pdftron.PDF
Assembly: pdftron (in pdftron.dll) Version: 255.255.255.255

Syntax

C++

JavaScript

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public sealed class PDFRasterizer : IClosable

Public NotInheritable Class PDFRasterizer
	Implements IClosable

public ref class PDFRasterizer sealed : IClosable

pdftron.PDF.PDFRasterizer = function();

Type.createClass(
	'pdftron.PDF.PDFRasterizer',
	null,
	Windows.Foundation.IClosable);

The PDFRasterizer type exposes the following members.

Constructors

	Name	Description
	PDFRasterizer	empty PDFRasterizer constructor
	PDFRasterizer(PDFRasterizerType)	instantiates PDFRasterizer with specified type

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Properties

	Name	Description
	Cancel	Gets or sets whether rasterization should be cancelled.

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Methods

	Name	Description
	CancelRendering	Cancel the rendering in progress.
	Close
	Equals	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	GetColorPostProcessMode
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetRasterizerType	Gets the type of current rasterizer.
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	Rasterize	Draws the page into a given memory buffer.
	RasterizeSeparations	Draws the page into a given memory buffer (Separation)
	SetAntiAliasing	Enable or disable anti-aliasing. Anti-Aliasing is a technique used to improve the visual quality of images when displaying them on low resolution devices (for example, low DPI computer monitors). Anti-aliasing is enabled by default.
	SetBackgroundColor	Sets the background colors for the Rasterizer The Rasterizer will start initialize the entire buffer with this color The default is transparent (each byte is 0)
	SetCaching	Sets the caching.
	SetColorPostProcessColors	Set the color post processing transformation. This transform is applied to the rasterized bitmap as the final step in the rasterization process, and is applied directly to the resulting bitmap(disregarding any color space information). Color post processing only supported for RGBA output. This mode will map the brightness of the original rasterized bitmap to a gradient between whiteColor and blackColor
	SetColorPostProcessMode	Draws the page into a given memory buffer. Set the color post processing transformation. This transform is applied to the rasterized bitmap as the final step in the rasterization process, and is applied directly to the resulting bitmap (disregarding any color space information). Color post processing only supported for RGBA output.
	SetDrawAnnotations	Enable or disable annotation and forms rendering. By default, annotations and forms are rendered.
	SetGamma	Sets the gamma factor used for anti-aliased rendering.
	SetHighlightFields	Enable or disable highlighting form fields. Default is disabled.
	SetImageSmoothing	Enable or disable image smoothing. The rasterizer allows a tradeoff between rendering quality and rendering speed. This function can be used to indicate the preference between rendering speed and quality.image smoothing is enabled by default.
	SetOCGContext
	SetOverprint	Enable or disable support for overprint. Overprint is a device dependent feature and the results will vary depending on the output color space and supported colorants (i.e. CMYK, CMYK+spot, RGB, etc). By default overprint is enabled for only PDF/X files.
	SetPathHinting	Enable or disable path hinting. Path hinting is used to slightly adjust paths in order to avoid or alleviate artifacts of hair line cracks between certain graphical elements. This option is turned on by default.
	SetPrintMode	Tells the rasterizer to render the page 'print' mode. Certain page elements (such as annotations or OCG-s) are meant to be visible either on the screen or on the printed paper but not both. A common example, is the "Submit" button on electronic forms.
	SetRasterizerType	Sets rasterizer to the specified type
	SetThinLineAdjustment	Set thin line adjustment parameters.
	ToString	Returns a string that represents the current object. (Inherited from Object.)

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Reference

pdftron.PDF Namespace