CPTLayerAnnotation Class Reference

Positions a content layer relative to an anchor point in a reference layer. More...

#import <CPTLayerAnnotation.h>

Inheritance diagram for CPTLayerAnnotation:

Collaboration diagram for CPTLayerAnnotation:

Public Instance Methods
Initialization
(nonnull instancetype)	- initWithAnchorLayer:
	Initializes a newly allocated CPTLayerAnnotation object with the provided reference layer. More...
(nullable instancetype)	- initWithCoder:
	Returns an object initialized from data in a given unarchiver. More...
Public Instance Methods inherited from CPTAnnotation
(nonnull instancetype)	- init
	Initializes a newly allocated CPTAnnotation object. More...
(void)	- positionContentLayer
	Positions the content layer relative to its reference anchor. More...
Public Instance Methods inherited from NSObject
(Class)	- classForCoder
(id)	- copy
(void)	- dealloc
(void)	- finalize
(id)	- init
(id)	- mutableCopy
Public Instance Methods inherited from <NSObject>
(NSString *)	- description
(NSUInteger)	- hash
(BOOL)	- isEqual:
Public Instance Methods inherited from <NSKeyValueBindingCreation>
(NSArray *)	- exposedBindings
(Class)	- valueClassForBinding:
(void)	- bind:toObject:withKeyPath:options:
(NSArray *)	- optionDescriptionsForBinding:
(NSDictionary *)	- infoForBinding:
(void)	- unbind:
Public Instance Methods inherited from <NSCoding>
(id)	- initWithCoder:
(void)	- encodeWithCoder:

Properties
CPTLayer *	anchorLayer
	The reference layer. More...
CPTRectAnchor	rectAnchor
	The anchor position for the annotation. More...
CPTConstraints *	xConstraints
	The constraints used to position the content layer relative to the reference layer in the x-direction. Setting the rectAnchor resets the constraints. More...
CPTConstraints *	yConstraints
	The constraints used to position the content layer relative to the reference layer in the y-direction. Setting the rectAnchor resets the constraints. More...
Properties inherited from CPTAnnotation
CPTLayer *	contentLayer
	The annotation content. More...
CPTAnnotationHostLayer *	annotationHostLayer
	The host layer for the annotation content. More...
CGPoint	contentAnchorPoint
	The anchor point for the content layer. More...
CGPoint	displacement
	The displacement from the layer anchor point. More...
CGFloat	rotation
	The rotation of the label in radians. More...

Additional Inherited Members
Public Class Methods inherited from NSObject
(id)	+ alloc
(Class)	+ class
(void)	+ initialize
(void)	+ load
(id)	+ new
Public Class Methods inherited from <NSKeyValueBindingCreation>
(void)	+ exposeBinding:
Public Class Methods inherited from <NSSecureCoding>
(BOOL)	+ supportsSecureCoding:

Detailed Description

Positions a content layer relative to an anchor point in a reference layer.

Layer annotations are positioned relative to a reference layer. This allows the annotation content layer to move with changes in the reference layer. This is useful for applications such as titles attached to an edge of the reference layer.

Method Documentation

initWithAnchorLayer:

- (nonnull instancetype) initWithAnchorLayer:

(nonnull CPTLayer *)

newAnchorLayer

Initializes a newly allocated CPTLayerAnnotation object with the provided reference layer.

This is the designated initializer. The initialized layer will be anchored to CPTRectAnchorTop by default.

Parameters

newAnchorLayer

The reference layer. Must be non-nil.

Returns

The initialized CPTLayerAnnotation object.

initWithCoder:

- (nullable instancetype) initWithCoder:

(nonnull NSCoder *)

coder

Returns an object initialized from data in a given unarchiver.

Parameters

coder

An unarchiver object.

Returns

An object initialized from data in a given unarchiver.

Reimplemented from CPTAnnotation.

Property Documentation

anchorLayer

- (nullable CPTLayer *) anchorLayer

readnonatomicweak

The reference layer.

rectAnchor

- (CPTRectAnchor) rectAnchor

readwritenonatomicassign

The anchor position for the annotation.

xConstraints

- (CPTConstraints *) xConstraints

readwritenonatomicstrong

The constraints used to position the content layer relative to the reference layer in the x-direction. Setting the rectAnchor resets the constraints.

yConstraints

- (CPTConstraints *) yConstraints

readwritenonatomicstrong

The constraints used to position the content layer relative to the reference layer in the y-direction. Setting the rectAnchor resets the constraints.

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The documentation for this class was generated from the following files:

• Source/CPTLayerAnnotation.h
• Source/CPTLayerAnnotation.m