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Version: Version 5 beta

Class: Page

A single page in a Pdf document.

Extends​

Implements​

Accessors​

document​

get document(): Document

the pdf document to which the page belongs

Returns​

Document

hasChanges​

get hasChanges(): boolean

indicates if the page or its content has been changed since the document was last saved

Returns​

boolean

height​

get height(): number

Height of the page in PDF coordinates. This represents the height of the page, taking into account the rotation.

Returns​

number

isDeleted​

get isDeleted(): boolean

indicates whether the page was deleted

Returns​

boolean

originalHeight​

get originalHeight(): number

Original height of the page in PDF coordinates. This represents the original height of the page without considering any rotation.

Returns​

number

originalWidth​

get originalWidth(): number

Original width of the page in PDF coordinates. This represents the original width of the page without considering any rotation.

Returns​

number

pageNumber​

get pageNumber(): number

page number

Returns​

number

rotation​

get rotation(): Rotation

Rotation of the page

Returns​

Rotation

width​

get width(): number

Width of the page in PDF coordinates. This represents the width of the page, taking into account the rotation.

Returns​

number

Methods​

addEventListener()​

addEventListener<K>(type, listener): void

Register a function that will be called whenever the specified event is delivered.

Type Parameters​

• K extends "textFragmentsLoaded"

A generic type representing the key of the event type.

Parameters​

• type: K

String representing the event type to listen for.

• listener

The function that will be executed when an event of the specified type occurs.

Returns​

void

Inherited from​

EventEmitter.addEventListener

dispatchEvent()​

dispatchEvent<K>(type, args): void

Dispatches an event to all registered listeners.

Type Parameters​

• K extends "textFragmentsLoaded"

A generic type representing the key of the event type.

Parameters​

• type: K

String representing the event type to dispatch.

• args: Parameters<PageEventMap[K]>

The data associated with the event.

Returns​

void

Inherited from​

EventEmitter.dispatchEvent

dispose()​

dispose(): void

Disposes of the object, releasing any resources it holds.

The dispose method is responsible for performing cleanup operations and releasing any resources acquired by the object. Once an object is disposed, it should not be used, and attempts to do so may result in undefined behavior.

Returns​

void

Implementation of​

Disposable.dispose

getTextFragments()​

getTextFragments(): TextFragment[]

Gets text fragments of a Pdf.Page.

Returns​

TextFragment[]

A Promise that resolves to an Array containing the text fragments.

Throws​

Pdf.NotLoadedError if text fragments are not loaded yet.

loadTextFragments()​

loadTextFragments(): Promise<TextFragment[]>

Loads text fragments of a Pdf.Page.

Returns​

Promise<TextFragment[]>

A Promise that resolves to an Array containing the text fragments.

removeAllListeners()​

removeAllListeners<K>(type): void

Remove all listeners for a given event.

Type Parameters​

• K extends "textFragmentsLoaded"

A generic type representing the key of the event type.

Parameters​

• type: K

String representing the event for which to remove all listeners.

Returns​

void

Inherited from​

EventEmitter.removeAllListeners

removeEventListener()​

removeEventListener<K>(type, listener): void

Removes an event listener previously registered with addEventListener.

Type Parameters​

• K extends "textFragmentsLoaded"

A generic type representing the key of the event type.

Parameters​

• type: K

String representing the event for which to remove an event listener.

• listener

The event listener function of the event handler to remove from the event target.

Returns​

void

Inherited from​

EventEmitter.removeEventListener

render()​

render(renderOptions): Promise<Blob>

Render the given page

Parameters​

• renderOptions: PageRenderOptions

Returns​

Promise<Blob>

Blob containing the image data

rotate()​

rotate(direction, degree): void

Rotates the page in the specified direction by the specified degree

The rotation can only be done in steps of 90 degrees or a multiple thereof

Parameters​

• direction: RotationDirection

clockwise or counter-clockwise

• degree: number = 90

rotation in degrees in multiples of 90

Returns​

void

transformDocumentViewPointQuadrilateralToPdfPointQuadrilateral()​

transformDocumentViewPointQuadrilateralToPdfPointQuadrilateral(quadrilateral, width, height, rotation): Quadrilateral<PdfPoint>

Converts a quadrilateral from document view coordinates to PDF coordinates.

This function transforms a Quadrilateral<DocumentViewPoint>, which corresponds to a quadrilateral scaled proportionally based on the rendered size of the page on screen, to a Quadrilateral<PdfPoint>, which is measured in PDF units. The conversion takes into account the dimensions of the document view page canvas and the rotation of the page.

Parameters​

• quadrilateral: Quadrilateral<DocumentViewPoint>

The Quadrilateral<DocumentViewPoint> object representing the quadrilateral in document view coordinates.

• width: number

The width of the document view page canvas.

• height: number

The height of the document view page canvas.

• rotation: Rotation

The rotation of the page.

Returns​

Quadrilateral<PdfPoint>

A new instance of Quadrilateral<PdfPoint> representing the converted coordinates in PDF units.

transformDocumentViewPointRectangleToPdfPointRectangle()​

transformDocumentViewPointRectangleToPdfPointRectangle(rectangle, width, height, rotation): Rectangle<PdfPoint>

Converts a rectangle from document view coordinates to PDF coordinates.

This function transforms a Rectangle<DocumentViewPoint>, which corresponds to a rectangle scaled proportionally based on the rendered size of the page on screen, to a Rectangle<PdfPoint>, which is measured in PDF units. The conversion takes into account the dimensions of the document view page canvas and the rotation of the page.

Parameters​

• rectangle: Rectangle<DocumentViewPoint>

The Rectangle<DocumentViewPoint> object representing the rectangle in document view coordinates.

• width: number

The width of the document view page canvas.

• height: number

The height of the document view page canvas.

• rotation: Rotation

The rotation of the page.

Returns​

Rectangle<PdfPoint>

A new instance of Rectangle<PdfPoint> representing the converted coordinates in PDF units.

transformDocumentViewPointToPdfPoint()​

transformDocumentViewPointToPdfPoint(point, width, height, rotation): PdfPoint

Converts a point from document view coordinates to PDF coordinates.

This function transforms a DocumentViewPoint, which corresponds to a PDF point scaled proportionally based on the rendered size of the page on screen, to a PdfPoint, which is measured in PDF units. The conversion takes into account the dimensions of the document view page canvas and the rotation of the page.

Parameters​

• point: DocumentViewPoint

The DocumentViewPoint object representing the point in document view coordinates.

• width: number

The width of the document view page canvas.

• height: number

The height of the document view page canvas.

• rotation: Rotation

The rotation of the page.

Returns​

PdfPoint

A new instance of PdfPoint representing the converted coordinates in PDF units.

transformPdfPointQuadrilateralToDocumentViewPointQuadrilateral()​

transformPdfPointQuadrilateralToDocumentViewPointQuadrilateral(quadrilateral, width, height, rotation): Quadrilateral<DocumentViewPoint>

Converts a quadrilateral from PDF coordinates to document view coordinates.

This function transforms a Quadrilateral<PdfPoint>, which is measured in PDF units, to a Quadrilateral<DocumentViewPoint>, which corresponds to a quadrilateral scaled proportionally based on the rendered size of the page on screen. The conversion takes into account the dimensions of the document view page canvas and the rotation of the page.

Parameters​

• quadrilateral: Quadrilateral<PdfPoint>

The Quadrilateral<PdfPoint> object representing the quadrilateral in PDF coordinates.

• width: number

The width of the document view page canvas.

• height: number

The height of the document view page canvas.

• rotation: Rotation

The rotation of the page.

Returns​

Quadrilateral<DocumentViewPoint>

A new instance of Quadrilateral<DocumentViewPoint> representing the converted coordinates in document view units.

transformPdfPointRectangleToDocumentViewPointRectangle()​

transformPdfPointRectangleToDocumentViewPointRectangle(rectangle, width, height, rotation): Rectangle<DocumentViewPoint>

Converts a rectangle from PDF coordinates to document view coordinates.

This function transforms a Rectangle<PdfPoint>, which is measured in PDF units, to a Rectangle<DocumentViewPoint>, which corresponds to a rectangle scaled proportionally based on the rendered size of the page on screen. The conversion takes into account the dimensions of the document view page canvas and the rotation of the page.

Parameters​

• rectangle: Rectangle<PdfPoint>

The Rectangle<PdfPoint> object representing the rectangle in PDF coordinates.

• width: number

The width of the document view page canvas.

• height: number

The height of the document view page canvas.

• rotation: Rotation

The rotation of the page.

Returns​

Rectangle<DocumentViewPoint>

A new instance of Rectangle<DocumentViewPoint> representing the converted coordinates in document view units.

transformPdfPointToDocumentViewPoint()​

transformPdfPointToDocumentViewPoint(point, width, height, rotation): DocumentViewPoint

Converts a point from PDF coordinates to document view coordinates.

This function transforms a PdfPoint, which is measured in PDF units, to a DocumentViewPoint, which corresponds to a PDF point scaled proportionally based on the rendered size of the page on screen. The conversion takes into account the dimensions of the document view page canvas and the rotation of the page.

Parameters​

• point: PdfPoint

The PdfPoint object representing the point in PDF coordinates.

• width: number

The width of the document view page canvas.

• height: number

The height of the document view page canvas.

• rotation: Rotation

The rotation of the page.

Returns​

DocumentViewPoint

A new instance of DocumentViewPoint representing the converted coordinates in document view units.

calculateRotatedDocumentViewPoint()​

static calculateRotatedDocumentViewPoint(point, rotation, pageWidth, pageHeight): DocumentViewPoint

Calculates rotated document view point around page center.

Parameters​

• point: DocumentViewPoint

The DocumentViewPoint object representing point to be rotated around page center.

• rotation: Rotation

The rotation value to apply to a point.

• pageWidth: number

• pageHeight: number

Returns​

DocumentViewPoint

A new instance of DocumentViewPoint representing the rotated point around page center.

calculateRotatedPdfPoint()​

static calculateRotatedPdfPoint(point, rotation, pageWidth, pageHeight): PdfPoint

Calculates rotated PDF point around center page center.

Parameters​

• point: PdfPoint

The PdfPoint object representing point to be rotated around page center.

• rotation: Rotation

The rotation value to apply to a point.

• pageWidth: number

• pageHeight: number

Returns​

PdfPoint

A new instance of PdfPoint representing the rotated point around page center.