1. Home
  2. API
  3. Broadside.Annotations
  4. PdfAnnotation
  5. Methods
  6. GetAppearanceMatrix(PdfFormXObject)

GetAppearanceMatrix(PdfFormXObject) Method

Definition

Assembly Broadside.dll
View source

Computes the matrix that places appearance on the annotation rectangle (§12.5.5).

public Matrix? GetAppearanceMatrix(PdfFormXObject appearance)

Parameters

appearance
PdfFormXObject

One of this annotation's appearances.

Returns

Nullable<Matrix>
The matrix from form space to default user space, or null when nothing can be drawn.

Remarks

ISO 32000-2 §12.5.5, as ComputeAppearanceMatrix(PdfRectangle, PdfRectangle, Matrix) with Rect. An appearance without a bounding box uses [0 0 width height] of the rectangle, as pdf.js does. NoZoom, NoRotate and a watermark's FixedPrint add transformations of their own, which are the renderer's.