PSPDFRotatable

Objective-C

@protocol PSPDFRotatable <NSObject>

Swift

protocol Rotatable : NSObjectProtocol

Annotations that can be rotated conform to this protocol.

NOTE: Rotation is only supported by free-text annotations and stamp annotations in limited annotation save mode configurations (Document.annotationSaveMode):

  • Free-text: Rotating is supported in all saving configurations.

  • Stamp: Only supported by the default stamp styles (Acrobat stamps) and Vector stamps i.e stamps that make use of AppearanceStreamGenerating.

The aforementioned stamp types can only be rotated only if the PDF document embeds the annotation into the document itself i.e. embedded annotation save mode. Rotation is not supported if the annotations are saved to an external file using externalFile or when using a XFDF (XFDFAnnotationProvider) to save annotations.

  • The counterclockwise angle of the annotation relative to the page, in degrees. The angle should be between 0 and 359. Defaults to 0.

    To set the rotation, use setRotation(_:updateBoundingBox:).

    Declaration

    Objective-C

    @property (readonly) NSUInteger rotation;

    Swift

    var rotation: UInt { get }

  • Sets the rotation property, optionally updating the boundingBox to preserve the content size.

    Updating the boundingBox of the annotation will ensure it encloses the content while preserving the content size and center, without distorting the annotation.

    Not updating the boundingBox would in general distort the annotation, but in some cases it is required to get the correct results, such as during setup.

    Declaration

    Objective-C

    - (void)setRotation:(NSUInteger)rotation
    updateBoundingBox:(BOOL)shouldUpdateBoundingBoxToMaintainContentSize;

    Swift

    func setRotation(_ rotation: UInt, updateBoundingBox shouldUpdateBoundingBoxToMaintainContentSize: Bool)

    Parameters

    rotation

    The new value for the rotation property. This should be between 0 and 359.
    shouldUpdateBoundingBoxToMaintainContentSize

    If true the boundingBox will be updated to preserve the content size.