Interface IAnnotationPlacementStrategy

Defines the interface for methods which allows to place annotation

Namespace:

Assembly: .dll

Syntax

public interface IAnnotationPlacementStrategy

Methods

drawAdorner(Canvas adornerCanvas)

Draws adorner on specified Canvas

Declaration

public abstract void drawAdorner(Canvas adornerCanvas)

Parameters

Type	Name	Description
android.graphics.Canvas	adornerCanvas	The target Canvas to draw adorner on

isInBounds(AnnotationCoordinates coordinates, IAnnotationSurface annotationsSurface)

Checks whether coordinates are within canvas bounds

Declaration

public abstract boolean isInBounds(AnnotationCoordinates coordinates, IAnnotationSurface annotationsSurface)

Parameters

Type	Name	Description
AnnotationCoordinates	coordinates	The annotation coordinates
IAnnotationSurface	annotationsSurface	The parent annotation surface

Returns

Type	Description
boolean	True if annotation is in bounds

moveAnnotationTo(AnnotationCoordinates coordinates, float horizontalOffset, float verticalOffset, IAnnotationSurface annotationSurface)

Moves the annotation to a specific horizontal and vertical offset

Declaration

public abstract void moveAnnotationTo(AnnotationCoordinates coordinates, float horizontalOffset, float verticalOffset, IAnnotationSurface annotationSurface)

Parameters

Type	Name	Description
AnnotationCoordinates	coordinates	The annotation coordinates
float	horizontalOffset	The horizontal offset in pixels
float	verticalOffset	The vertical offset in pixels
IAnnotationSurface	annotationSurface	The parent annotation surface

moveBasePointTo(float xCoord, float yCoord, int index)

Sets base point for annotation

Declaration

public abstract void moveBasePointTo(float xCoord, float yCoord, int index)

Parameters

Type	Name	Description
float	xCoord	The x coordinate of base point in pixels
float	yCoord	The y coordinate of base point in pixels
int	index	The index of base point to move

placeAnnotation(AnnotationCoordinates coordinates, CanvasLayout.LayoutParams layoutParams)

Places annotation with specific annotation coordinates

Declaration

public abstract void placeAnnotation(AnnotationCoordinates coordinates, CanvasLayout.LayoutParams layoutParams)

Parameters

Type	Name	Description
AnnotationCoordinates	coordinates	The annotation coordinates
CanvasLayout.LayoutParams	layoutParams	The annotation layout params

selectAdornerActionForPoint(float x, float y, IAdornerLayer relativeTo)

Selects the IAnnotationAdornerAction for specified point on IAdornerLayer

Declaration

public abstract IAnnotationAdornerAction selectAdornerActionForPoint(float x, float y, IAdornerLayer relativeTo)

Parameters

Type	Name	Description
float	x	The x coordinate of point on the adorner layer
float	y	The y coordinate of point on the adorner layer
IAdornerLayer	relativeTo	The adorner layer

Returns

Type	Description
IAnnotationAdornerAction	The IAnnotationAdornerAction if it is required for specified point, otherwise null