Page Class

class Page

Namespace:com::datalogics::PDFL

Detailed Description

Represents a page within a PDF file. The page is the basic object used for organizing content in a PDF document.

Constructor & Destructor Documentation

Page(Document doc, int afterPageNum, Rect mediaBox)

Parameters

doc: Document: The document in which the page is created.
afterPageNum: int: The page number after which the new page is inserted. The first page is 0. Use PDBeforeFirstPage() (see PDExpT.h) to insert the new page at the beginning of a document.
mediaBox: Rect: A rectangle specifying the page's media box, specified in user space coordinates.

Creates and acquires a new page. The page is inserted into the document at the specified location. Call PDPageRelease() when you are done using the page.

Page(Document doc, int pageNum)

Parameters

doc: Document: The document containing the page to acquire.
pageNum: int: The page number of the page to acquire. The first page is 0.

Gets a Page from a document.

Member Function Documentation

void addAnnotation(int addAfter, Annotation annot)

Parameters

addAfter: int: The index into the page's annotation array where the annotation is added. The first annotation in the array has an index of zero. Passing a value of -2 adds the annotation to the end of the array. Passing other negative values produces undefined results.
annot: Annotation: The annotation to add.

Returns:

void

(Deprecated, function may be removed in the future. Instead, use the constructor for Annotation or a subclass of Annotation.)

Adds an annotation at the specified location in a page's annotation array.

Annotation addNewAnnotation(int addAfter, String subType, Rect initialRect)

Parameters

addAfter: int: Where to add the annotation in the page's annotation array. Passing a value of -2 adds the annotation to the end of the array (this is generally what you should do unless you have a need to place the annotation at a special location in the array). Passing a value of -1 adds the annotation to the beginning of the array. Passing other negative values produces undefined results.
subType: String: The subtype of the annotation to add.
initialRect: Rect: A pointer to a rectangle specifying the annotation's bounds, specified in user space coordinates.

Returns:

Annotation

The newly created annotation.

(Deprecated, function may be removed in the future. Instead, use the constructor for Annotation or a subclass of Annotation.)

Adds an annotation to the page. This method is equivalent to calling PDPageCreateAnnot() followed by PDPageAddAnnot().

boolean addQRBarcode(QREncodeParams params)

Parameters

params: QREncodeParams: The Params specified how to encode the barcode

Returns:

boolean

if True, the Barcode was successfully added to the Page.

Add a QR Two-Dimensional Barcode encoded with the specified Params to the specified PDF page as an image.

void addQRBarcode(String textToEncode, double x, double y, double width, double height)

Parameters

textToEncode: String: The Text to be encoded in the barcode
x: double: The horizontal location on the page in points
y: double: The vertical location on the page in points
width: double: The width of the barcode image in points
height: double: The height of the barcode image in points

Returns:

void

Add a QR Two-Dimensional Barcode encoded with the specified Text to the page as an image.

boolean colorConvertContent(ColorConvertParams params)

Parameters

params: ColorConvertParams: The color conversion parameters.

Returns:

boolean

True if color conversion occurred. False if nothing was color converted.

Convert the colors (in place) in a page as specified by the params block by applying an ICC profile to the objects contained in the page.

Annotation createAnnotation(String subType, Rect initialRect)

Parameters

subType: String: The subtype of the annotation to add.
initialRect: Rect: A pointer to a rectangle specifying the annotation's bounds, specified in user space coordinates.

Returns:

Annotation

The newly created annotation.

(Deprecated, function may be removed in the future. Instead, use the constructor for Annotation or a subclass of Annotation.)

Creates a new annotation, associated with the specified page's Document, but not added to the page. Use AddAnnotation to add the annotation to the page.

synchronized void delete(Boolean disposing)

Parameters

disposing: Boolean

Returns:

synchronized void

synchronized void delete()

Returns:

synchronized void

byte[] drawContents(DrawParams drawParams)

Parameters

drawParams: DrawParams: Parameters for the drawing operation

Returns:

byte[]

an array of bytes containing the image.

Draw the contents of the page into a bitmap, and return the raw bitmap data as an array of bytes arranged in left to right, top to bottom order. Each row of the bitmap is aligned onto a four-byte boundary.

The amount of data returned depends on the destRect parameter. Using integer arithmetic:

stride = (width * components + 3) & ~3

array_size = stride * height

java.util.List< java.awt.image.BufferedImage > drawContents(DrawParams drawParams, java.util.List< SeparationColorSpace > colorants)

Parameters

drawParams: DrawParams: draw parameters for rendering of this page
colorants: java.util.List< SeparationColorSpace >: collection of the page's colorants in SeparationColorSpace, that were constructed from an ink and a page. Their tint transforms and alternates will be ignored

Returns:

java.util.List< java.awt.image.BufferedImage >

List, that contains buffered image for each ink

Draw the contents of this page in collection of the images. Each image in collection is a separated channel.

void drawContents(java.awt.image.BufferedImage image, Matrix matrix, Rect updateRect)

Parameters

image: java.awt.image.BufferedImage: the image into which to rasterize the page.
matrix: Matrix: A matrix to concatenate onto the default page matrix. It is useful for converting from page to window coordinates and for scaling.
updateRect: Rect: the rectangle to draw, specified in user coordinates. Any objects outside the updateRect will not be drawn.

Returns:

void

Draw the contents of this page to an image, only DeviceRGBA colorModel is supported.

void drawContents(java.awt.image.BufferedImage image, Matrix matrix, Rect updateRect, java.util.EnumSet< SmoothFlags > newAntiAlias, boolean doThinLine, boolean bypassCopyPerm)

Parameters

image: java.awt.image.BufferedImage: the image into which to rasterize the page.
matrix: Matrix: A matrix to concatenate onto the default page matrix. It is useful for converting from page to window coordinates and for scaling.
updateRect: Rect: the rectangle to draw, specified in user coordinates. Any objects outside the updateRect will not be drawn.
newAntiAlias: java.util.EnumSet< SmoothFlags >: antialias level.
doThinLine: boolean: flag to set ThinLineHeuristics, to determine whether thin lines will be fattened non-linearly.
bypassCopyPerm: boolean: flag to set to determine whether Copy Permissions are bypassed for drawing.

Returns:

void

Draw the contents of this page to a BufferedImage, only DeviceRGBA colorModel is supported.

void drawContents(java.awt.image.BufferedImage image, Matrix matrix, Rect updateRect, java.util.EnumSet< SmoothFlags > newAntiAlias, boolean doThinLine, boolean bypassCopyPerm, OptionalContentContext optionalContentContext)

Parameters

image: java.awt.image.BufferedImage: the image into which to rasterize the page.
matrix: Matrix: A matrix to concatenate onto the default page matrix. It is useful for converting from page to window coordinates and for scaling.
updateRect: Rect: the rectangle to draw, specified in user coordinates. Any objects outside the updateRect will not be drawn.
newAntiAlias: java.util.EnumSet< SmoothFlags >: antialias level.
doThinLine: boolean: flag to set ThinLineHeuristics, to determine whether thin lines will be fattened non-linearly.
bypassCopyPerm: boolean: flag to set to determine whether Copy Permissions are bypassed for drawing.
optionalContentContext: OptionalContentContext: the optional-content visibility state to render with. Passing null retains the current behavior (the document's default optional-content context).

Returns:

void

Draw the contents of this page to a BufferedImage using a specific optional-content (layer) visibility state, only DeviceRGBA colorModel is supported.

void drawContents(java.awt.image.BufferedImage image, Matrix matrix, Rect updateRect, OptionalContentContext optionalContentContext)

Parameters

image: java.awt.image.BufferedImage: the image into which to rasterize the page.
matrix: Matrix: A matrix to concatenate onto the default page matrix. It is useful for converting from page to window coordinates and for scaling.
updateRect: Rect: the rectangle to draw, specified in user coordinates. Any objects outside the updateRect will not be drawn.
optionalContentContext: OptionalContentContext: the optional-content visibility state to render with. Passing null retains the current behavior (the document's default optional-content context).

Returns:

void

Draw the contents of this page to an image using a specific optional-content (layer) visibility state, only DeviceRGBA colorModel is supported.

void finalize()

Returns:

void

boolean flattenOptionalContent()

Returns:

boolean

true if the page was successfully flattened, false otherwise.

Flattens optional content on the page.

This page will be replaced with a version that has no optional content. The new version of the page will contain only what was visible on the page when the call was made.

The document's default optional content context will be used to determine visibility of optional content.

The optional content information formerly associated with content on the page will NOT be deleted from the document, as it is possible for optional content groups to contain items on multiple pages.

boolean flattenOptionalContent(OptionalContentContext occ)

Parameters

occ: OptionalContentContext: The optional content context in which content is checked for visibility.

Returns:

boolean

true if the page was successfully flattened, false otherwise.

Flattens optional content on the page.

This page will be replaced with a version that has no optional content. The new version of the page will contain only what was visible on the page when the call was made.

The optional content information formerly associated with content on the page will NOT be deleted from the document, as it is possible for optional content groups to contain items on multiple pages.

Annotation getAnnotation(int annotIndex)

Parameters

annotIndex: int: The index of the annotation to get on a page. The first annotation on a page has an index of zero.

Returns:

Annotation

The indexed annotation object.

Gets the annotIndex annotation on the page.

Rect getArtBox()

Returns:

Rect

The ArtBox rectangle in user space coordinates.

Get the page's ArtBox.

The ArtBox defines the extent of the page's meaningful content (including potential white space) as intended by the page's creator.

Rect getBBox()

Returns:

Rect

The bounding box rectangle in user space coordinates.

Get the page's Bounding Box.

The BBox is the smallest rectangle that encloses all of the page's visible content. Unlike the other page boxes, it is calculated from the page content and cannot be set directly.

Rect getBleedBox()

Returns:

Rect

The BleedBox rectangle in user space coordinates.

Get the page's BleedBox.

The BleedBox defines the region to which the contents of the page shall be clipped when output in a production environment. It includes any extra bleed area needed to account for limitations of cutting, folding, and trimming equipment.

Content getContent()

Returns:

Content

The content for the page.

Creates a Content from the Page object's contents and resources. The Content is cached, so that subsequent calls on the same Page return the same Content.

After making changes to the content, make sure to call the UpdateContent method on the Page.

Rect getCropBox()

Returns:

Rect

The CropBox rectangle in user space coordinates.

Get the page's CropBox.

The CropBox defines the region to which the contents of the page are to be clipped (cropped) when displayed or printed. The default value is the page's MediaBox.

Image getImage(Rect exportRect)

Parameters

exportRect: Rect: A Rect describing the region of the page to export, specified in user space coordinates. One user unit corresponds to 1/72 inch. To export the entire page, set this parameter to the page's CropBox. User space coordinates correspond to the unrotated page; the rotation specified in Page.Rotation is not taken into account with these coordinates.

Returns:

Image

An Image containing the rendered page region.

Export a region of a PDF page to an Image object.

If the exportRect is smaller than the PDF page, then the pixel width and pixel height of the resulting image will be calculated from the exportRect and a resolution of 300.0, containing the area of the page inside the exportRect, scaled to fit. If a specific pixel size or resolution is desired, use the version of GetImage that takes a PageImageParams as a parameter.

Image getImage(Rect exportRect, PageImageParams ImageParams)

Parameters

exportRect: Rect: A Rect describing the region of the page to export, specified in user space coordinates. One user unit corresponds to 1/72 inch. To export the entire page, set this parameter to the page's CropBox. User space coordinates correspond to the unrotated page; the rotation specified in Page.Rotation is not taken into account with these coordinates.
ImageParams: PageImageParams: A PageImageParams containing additional parameters for the exported image, including the exported image's pixel width, pixel height, and resolution. If these parameters are not specified, the pixel width and pixel height of the image are calculated using the exportRect and a resolution of 300.0.

Returns:

Image

An Image containing the rendered page region.

Export a region of a PDF page to an Image object.

This version of GetImage can be used to specify a particular size in pixels for the exported image by setting ImageParams.PixelWidth and/or ImageParams.PixelHeight.

If the exportRect is smaller than the PDF page and ImageParams.PixelWidth and ImageParams.PixelHeight are set, then the resulting image will be of the size ImageParams.PixelWidth x ImageParams.PixelHeight and contain the area of the page inside the exportRect, scaled to fit.

It is also possible to use this function by specifying only ImageParams.PixelWidth or only ImageParams.PixelHeight. When only one is specified, the function will calculate the other.

Image getImage(Rect exportRect, PageImageParams ImageParams, java.util.List< SeparationColorSpace > spaces)

Parameters

exportRect: Rect: A Rect describing the region of the page to export, specified in user space coordinates. One user unit corresponds to 1/72 inch. To export the entire page, set this parameter to the page's CropBox. User space coordinates correspond to the unrotated page; the rotation specified in Page.Rotation is not taken into account with these coordinates.
ImageParams: PageImageParams: A PageImageParams containing additional parameters for the exported image, including the exported image's pixel width, pixel height, and resolution. If these parameters are not specified, the pixel width and pixel height of the image are calculated using the exportRect and a resolution of 300.0.
spaces: java.util.List< SeparationColorSpace >: A collection of SeparationColorSpace objects. This parameter is used to specify page's inks to be drawn. Each SeparationColorSpace must be constructed from an ink and a page. Their tint transforms and alternates will be ignored.

Returns:

Image

An Image containing the rendered page region.

Export a region of a PDF page to an Image object.

This version of GetImage can be used to specify a particular size in pixels for the exported image by setting ImageParams.PixelWidth and/or ImageParams.PixelHeight.

It renders specified page's inks and ignores colorSpace parameter from ImageParams. This function always renders the page in DeviceN colorspace.

It is also possible to use this function by specifying only ImageParams.PixelWidth or only ImageParams.PixelHeight. When only one is specified, the function will calculate the other.

ImageCollection getImageSeparations(Rect exportRect, PageImageParams ImageParams, java.util.List< SeparationColorSpace > spaces, RenderProgressProc progressProc)

Parameters

exportRect: Rect: A Rect describing the region of the page to export, specified in user space coordinates.
ImageParams: PageImageParams: A PageImageParams containing additional parameters for the exported image, including the exported image's pixel width, pixel height, and resolution.
spaces: java.util.List< SeparationColorSpace >: A collection of SeparationColorSpace class additional parameter for specifying colorants for bitmap rendering.
progressProc: RenderProgressProc: A callback to report rendering progress.

Returns:

ImageCollection

An ImageCollection containing one Image per separation colorant.

Export a region of a PDF page using the specified Separation ColorSpaces to an Image Collection object, with a progress callback.

ImageCollection getImageSeparations(Rect exportRect, PageImageParams ImageParams, java.util.List< SeparationColorSpace > spacesCollection)

Parameters

exportRect: Rect: A Rect describing the region of the page to export, specified in user space coordinates. One user unit corresponds to 1/72 inch. To export the entire page, set this parameter to the page's CropBox. User space coordinates correspond to the unrotated page; the rotation specified in Page.Rotation is not taken into account with these coordinates.
ImageParams: PageImageParams: A PageImageParams containing additional parameters for the exported image, including the exported image's pixel width, pixel height, and resolution. If these parameters are not specified, the pixel width and pixel height of the image are calculated using the exportRect and a resolution of 300.0.
spacesCollection: java.util.List< SeparationColorSpace >: A collection of SeparationColorSpace class additional parameter for specifying colorants for bitmap rendering. Each SeparationColorSpace must be constructed from an ink and a page. Their tint transforms and alternates will be ignored.

Returns:

ImageCollection

An ImageCollection containing one Image per separation colorant.

Export a region of a PDF page using the specified Separation ColorSpaces to an Image Collection object.

This version of GetImage can be used to specify a particular size in pixels for the exported image by setting ImageParams.PixelWidth and/or ImageParams.PixelHeight.

It is also possible to use this function by specifying only ImageParams.PixelWidth or only ImageParams.PixelHeight. When only one is specified, the function will calculate the other.

Rect getMediaBox()

Returns:

Rect

The MediaBox rectangle in user space coordinates.

Get the page's MediaBox.

The MediaBox defines the boundaries of the physical medium on which the page is intended to be displayed or printed. It is the largest of the page boxes and serves as the default for the CropBox.

int getNumAnnotations()

Returns:

int

The number of annotations on this page.

Gets the number of annotations on a page. Annotations associated with pop-up windows (such as strikeouts) are counted as two annotations. Widget annotations (form fields) are included in the count.

Image getOutputPreviewImage(Rect exportRect, PageImageParams ImageParams, java.util.List< SeparationColorSpace > spaces)

Parameters

exportRect: Rect: A Rect describing the region of the page to export, specified in user space coordinates. One user unit corresponds to 1/72 inch. To export the entire page, set this parameter to the page's CropBox. User space coordinates correspond to the unrotated page; the rotation specified in Page.Rotation is not taken into account with these coordinates.
ImageParams: PageImageParams: A PageImageParams containing additional parameters for the exported image, including the exported image's pixel width, pixel height, and resolution. If these parameters are not specified, the pixel width and pixel height of the image are calculated using the exportRect and a resolution of 300.0.
spaces: java.util.List< SeparationColorSpace >: A collection of SeparationColorSpace class additional parameter for specifying colorants for bitmap rendering. Each SeparationColorSpace must be constructed from an ink and a page.

Returns:

Image

An Image representing the output preview of the page region.

Create an Output Preview image used when Soft Proofing a document prior to actual printing.

Image getOutputPreviewImage(Rect exportRect, PageImageParams ImageParams, java.util.List< SeparationColorSpace > spaces, boolean simulateOverprint)

Parameters

exportRect: Rect: A Rect describing the region of the page to export, specified in user space coordinates. One user unit corresponds to 1/72 inch. To export the entire page, set this parameter to the page's CropBox. User space coordinates correspond to the unrotated page; the rotation specified in Page.Rotation is not taken into account with these coordinates.
ImageParams: PageImageParams: A PageImageParams containing additional parameters for the exported image, including the exported image's pixel width, pixel height, and resolution. If these parameters are not specified, the pixel width and pixel height of the image are calculated using the exportRect and a resolution of 300.0.
spaces: java.util.List< SeparationColorSpace >: A collection of SeparationColorSpace class additional parameter for specifying colorants for bitmap rendering. Each SeparationColorSpace must be constructed from an ink and a page.
simulateOverprint: boolean: A flag that controls if Overprint is simulated or not for Spot Colorants. NOTE: A file with Overprinting, Process, and Spot Colorants can yield a different appearance when Simulation is enabled compared to when it's not.

Returns:

Image

An Image representing the output preview of the page region.

Create an Output Preview image used when Soft Proofing a document prior to actual printing.

PDFDict getPDFDict()

Returns:

PDFDict

Retrieve the PDFObject representation of this object.

int getPageNumber()

Returns:

int

the number of this page in the Document.

Retrieve the page number for this PDF page.

Page numbers always start at zero.

int getRenderWarnings()

Returns:

int

A bitfield to be compared against PageRenderWarning Enum values.

Reports possible page rendering problems.

PageRotation getRotation()

Returns:

PageRotation

The number of degrees by which the page is rotated clockwise when displayed or printed.

Rect getTrimBox()

Returns:

Rect

The TrimBox rectangle in user space coordinates.

Get the page's TrimBox.

The TrimBox defines the intended dimensions of the finished page after trimming. It may be smaller than the MediaBox to account for production- related content such as printing instructions or cut marks.

float getUserUnit()

Returns:

float

the size of default user space units.

Gets the size of default user space units for the page.

boolean hasTransparency(boolean includeAnnotAppearances)

Parameters

includeAnnotAppearances: boolean: If true, annotation appearances are included in the check; if false, annotation appearances will be ignored.

Returns:

boolean

true if the page uses transparency features, false otherwise.

Checks whether a page uses any transparency features.

Note: To determine whether a page uses transparency, the resources of the page must be enumerated (though the page contents do not need to be parsed). The page resources may not be optimized for slow (browser-based) connections, so calling Page.HasTransparency() before the page has been downloaded may cause unpleasant read behavior and performance problems.

java.util.List< Ink > listInks()

Returns:

java.util.List< Ink >

A list of Ink objects representing the inks used on this page.

Retrieve a list of all inks present on a page.

java.util.List< Ink > listInks(boolean includeOPI)

Parameters

includeOPI: boolean: If true, include inks contained in OPI dictionaries.

Returns:

java.util.List< Ink >

A list of Ink objects representing the inks used on this page.

Retrieve a list of all inks present on a page.

java.awt.image.BufferedImage makeBufferedImage(Rect exportRect, PageImageParams pip)

Parameters

exportRect: Rect: A Rect describing the region of the page to export, specified in user space coordinates. One user unit corresponds to 1/72 inch. To export the entire page, set this parameter to the page's CropBox. User space coordinates correspond to the unrotated page; the rotation specified in Page.Rotation is not taken into account with these coordinates.
pip: PageImageParams: Additional parameters for the exported image, including the exported image's pixel width, pixel height, and resolution. If these parameters are not specified, the pixel width and height of the returned image are calculated using the exportRect and a resolution of 300.0.

Returns:

java.awt.image.BufferedImage

Export a region of a PDF page to a java.awt.BufferedImage.

A particular size in pixels can be specified for the exported Bitmap by setting ImageParams.PixelWidth and/or ImageParams.PixelHeight.

If the exportRect is smaller than the PDF page and pip.PixelWidth and pip.PixelHeight are set, then the resulting image will be of the size pip.PixelWidth x pip.PixelHeight and contain the area of the page inside the exportRect, scaled to fit.

It is also possible to use this function by specifying only pip.PixelWidth or only pip.PixelHeight. When only one is specified, the function will calculate the other.

void makeSeparations(SeparationParams params)

Parameters

params: SeparationParams: Parameters for the separation generation, including a list of plates.

Returns:

void

Generate print color separations for a page.

void recognizePageContents(Document doc, OCREngine engine)

Parameters

doc: Document: The document the page being OCR'd belongs to
engine: OCREngine: The OCR engine instance that will be used to OCR document

Returns:

void

Run optical character recognition (OCR) on a page.

void removeAnnotation(int annotIndex)

Parameters

annotIndex: int: The index (into the page's annotation array) of the annotation to remove.

Returns:

void

Removes an annotation from the specified page. Annotations are stored in arrays, which are automatically compressed when an annotation is removed. For this reason, if you use a loop in which you remove annotations, structure the code so the loop processes from the highest to the lowest index. If you loop the other direction, you will skip over annotations immediately following ones you remove.

void setArtBox(Rect r)

Parameters

r: Rect: The rectangle specifying the ArtBox in user space coordinates, or null to remove the ArtBox.

Returns:

void

Set the page's ArtBox.

The ArtBox defines the extent of the page's meaningful content (including potential white space) as intended by the page's creator.

void setBleedBox(Rect r)

Parameters

r: Rect: The rectangle specifying the BleedBox in user space coordinates, or null to remove the BleedBox.

Returns:

void

Set the page's BleedBox.

void setCropBox(Rect r)

Parameters

r: Rect: The rectangle specifying the CropBox in user space coordinates, or null to remove the CropBox.

Returns:

void

Set the page's CropBox.

The CropBox defines the region to which the contents of the page are to be clipped (cropped) when displayed or printed. The default value is the page's MediaBox.

void setMediaBox(Rect r)

Parameters

r: Rect: The rectangle specifying the MediaBox in user space coordinates.

Returns:

void

Set the page's MediaBox.

The MediaBox defines the boundaries of the physical medium on which the page is intended to be displayed or printed. It is the largest of the page boxes and serves as the default for the CropBox.

void setRotation(PageRotation rotation)

Parameters

rotation: PageRotation

Returns:

void

The number of degrees by which the page is rotated clockwise when displayed or printed.

void setTrimBox(Rect r)

Parameters

r: Rect: The rectangle specifying the TrimBox in user space coordinates, or null to remove the TrimBox.

Returns:

void

Set the page's TrimBox.

void setUserUnit(float userUnit)

Parameters

userUnit: float: the size of default user space units.

Returns:

void

Sets the size of default user space units for the page.

void updateContent()

Returns:

void

Sets the page's Content back into the Page, using the same compression filters with which the content was previously encoded.

Call this function after making any changes to the Page's content.

Detailed Description

Referenced by

Uses types

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