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AnnotationManager
Annotation Types
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Free Hand Annotations
Free hand annotations are drawn with one or more paths of points. Each path represents a stroke of the annotation. Free hand annotations are used for signatures and are automatically created by a signature widget after signing.
Free hand annotations can only use the stroke color. Border styles are not supported but the stroke thickness can be adjusted.
When creating free hand annotations in the UI, there is a short delay before the annotations is created which starts after a brief period of inactivity. This is to allow users to add various strokes to the annotation before it is finalized. This delay can be changed.
Instantiation
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Required properties
PageNumber
Gets or sets the page number of a document that the annotation appears on.
Notable properties
For the full list of properties, please visit the annotation's API docs.
StrokeColor
Gets or sets the color of the annotation's stroke.
StrokeThickness
Gets or sets the width of the annotation's stroke outline.
BottomMost
The bottom-most point of the annotation. This property cannot be initialized through the initializer.
LeftMost
The left-most point of the annotation. This property cannot be initialized through the initializer.
RightMost
The right-most point of the annotation. This property cannot be initialized through the initializer.
TopMost
The top-most point of the annotation. This property cannot be initialized through the initializer.
Author
The author of the annotation.
Color
Gets or sets the annotation's stroke color.
Hidden
Gets or sets whether the annotation is hidden.
Invisible
Gets or sets whether the annotation is invisible, only if it is an unknown annotation type. Generally for hiding annotations you should use "Hidden".
IsClickableOutsideRect
Gets or sets whether any parts of the annotation drawn outside of the rect are clickable.
Listable
Gets or sets whether the annotation should be listed in annotation lists. If set to false, the annotation will also become unselectable.
Locked
Gets or sets whether the annotation is locked or not. If it's locked it can't be edited or deleted, but the note can be edited.
LockedContents
Gets or sets whether the annotation contents are locked or not. If the contents are locked then note can't be edited but the annotation can be edited or deleted.
NoDelete
Gets or sets if this annotation can be deleted.
NoMove
Gets or sets whether or not the annotation can be moved.
NoResize
Gets or sets if this annotation can be resized by the user.
NoRotate
Gets or sets if this annotation can be rotated.
NoView
Gets or sets whether the annotation is visible on the screen. Differs from Hidden in that it can still be printed if the print flag is set.
NoZoom
Gets or sets if this annotation scales with the page.
Opacity
Gets or sets the opacity of the annotation.
Printable
Gets or sets whether the annotation should be displayed when printing the page.
ReadOnly
Gets or sets whether the annotation is readonly or not. If it's readonly both the annotation itself and its note can't be edited or deleted.
ToggleNoView
Gets or sets whether the ToggleNoView flag is set on the annotation.
Useful methods
getPaths
Free hand annotations are made with multiple paths. The annotation provides a getPaths API that will provide an array of paths.
getPath
To read a path and its points of a free hand annotation, you can use getPath to get an array of points. You will need to provide a path index, otherwise it will default to the first path.
setPath
If you have a path of points already, you can use setPath instead to set the path directly without adding them point by point.
addPathPoint
When initializing a freehand annotation, you should use the addPathPoint API to add points to the annotation path. What makes this API different from other path type annotations is that it can take a third parameter that specifies which path to add the point. Default is the first path.
getPathPoint
If you know which point and which path on the annotation path you would like to get, you can use getPathPoint with the point and path index to retrieve the point. If the path index is not provided, the first path will be used.
setPathPoint
Setting the path points on the free hand annotation can be done through the setPathPoint. This can be used to initialize the points of a the annotation if that was not done at the start. Since free hand annotation contains multiple paths, a path index can be provided. If one was not provided, the first path will be used by default.
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