PDFTron WebViewer

Class: LineSelectionModel

Annotations. LineSelectionModel

A selection model for LineAnnotation.

new LineSelectionModel(annotation, canModify)

Creates a line selection model.
Parameters:
Name Type Description
annotation Annotations.Annotation the annotation
canModify boolean indicates if the annotation can be modified

Extends

Methods

canModify()

Indicates that the associated annotation is able to be modified
Inherited From:
Returns:
Type
boolean

drawSelectionOutline(ctx, annotation, useDashedLines, zoom)

Draws the selection outline of the annotation. By default, a rectangle is drawn based on the annotations x, y, width and height.
Parameters:
Name Type Description
ctx CanvasRenderingContext2D
annotation Annotations.Annotation
useDashedLines boolean Whether to draw annotation selection outline using a dashed line
zoom number
Inherited From:

getControlHandles()

Returns the ControlHandle objects associated with this selection model.
Inherited From:
Returns:
an array of ControlHandleObject
Type
Array.<Annotations.ControlHandle>

getDimensions(annotation)

Gets the dimensions {x, y, width, height} of the selection bounding box. It may be different from the annotation's bounding box. e.g. The selection bounding box may have a padding.
Parameters:
Name Type Description
annotation Annotations.Annotation
Inherited From:
Returns:
Type
CoreControls.Math.Rect

isSelected()

Indicates that the associated annotation is already selected. This can be useful to implement different selection behaviors when an annotation is selected.
Inherited From:
Overrides:
Returns:
Type
boolean

testControlHandles(annotation, zoom, x, y)

Hit detection for each control handle.
Parameters:
Name Type Description
annotation Annotations.Annotation
zoom number
x number
y number
Inherited From:
Returns:
the control handle that was hit
Type
Annotations.ControlHandle

testSelection(annotation, x, y, pageMatrix, zoom, rotation)

Determines if the provided point is a hit on the selected annotationhandle. * See Annotations.SelectionAlgorithm for usuable selection algorithms.
Parameters:
Name Type Description
annotation Annotations.Annotation the annotation
x number the x-coordinate of the point to test, in page coordinates
y number the y-coordinate of the point to test, in page coordinates
pageMatrix object the page matrix of the page the annotation is on
zoom number the zoom level of the page the annotation is on
rotation CoreControls.PageRotation the rotation of the page the annotation is on
Inherited From:
Returns:
true if the provided point is a hit
Type
boolean