Class FormXObject

A Form XObject — a self-contained content stream that can be painted multiple times at different positions and scales (spec §8.10, Table 88). Form XObjects are used for watermarks, repeated graphics, and annotation appearance streams.

Inheritance
object
Content
FormXObject
Inherited Members
Namespace: DRIT.Pdf.Content
Assembly: DRIT.Pdf.dll
Syntax
public sealed class FormXObject : Content

Constructors

FormXObject(PdfRect)

Initializes a new Form XObject with the specified bounding box. The content stream is initially empty — use the returned surface to draw into.

Declaration
public FormXObject(PdfRect boundingBox)
Parameters
Type Name Description
PdfRect boundingBox

The bounding box in form-space coordinates (spec §8.10, /BBox).

FormXObject(PdfSize)

Initializes a new Form XObject from a PdfSize. The bounding box is set to [0, 0, width, height].

Declaration
public FormXObject(PdfSize size)
Parameters
Type Name Description
PdfSize size

Properties

Bounds

Gets the bounding box of this form XObject (spec §8.10, /BBox entry).

Declaration
public override PdfRect Bounds { get; }
Property Value
Type Description
PdfRect
Overrides

Matrix

Gets the matrix that maps form space to user space (spec §8.10, /Matrix entry).

Declaration
public PdfMatrix? Matrix { get; set; }
Property Value
Type Description
PdfMatrix

Methods

SetBoundingBox(PdfRect)

Sets the bounding box of this form XObject.

Declaration
public void SetBoundingBox(PdfRect boundingBox)
Parameters
Type Name Description
PdfRect boundingBox

ToString()

Returns the concatenated text of all text content elements.

Declaration
public override string ToString()
Returns
Type Description
string
Overrides