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316 lines (266 loc) · 8.56 KB
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#import "CPTAnnotationHostLayer.h"
#import "CPTAnnotation.h"
#import "CPTExceptions.h"
/// @cond
@interface CPTAnnotationHostLayer()
@property (nonatomic, readwrite, strong) NSMutableArray *mutableAnnotations;
@end
/// @endcond
#pragma mark -
/** @brief A container layer for annotations.
*
* Annotations (CPTAnnotation) can be added to and removed from an annotation layer.
* The host layer automatically handles the annotation layout.
**/
@implementation CPTAnnotationHostLayer
/** @property NSArray *annotations
* @brief An array of annotations attached to this layer.
**/
@dynamic annotations;
@synthesize mutableAnnotations;
#pragma mark -
#pragma mark Init/Dealloc
/// @name Initialization
/// @{
/** @brief Initializes a newly allocated CPTAnnotationHostLayer object with the provided frame rectangle.
*
* This is the designated initializer. The initialized layer will have an empty
* @ref annotations array.
*
* @param newFrame The frame rectangle.
* @return The initialized CPTAnnotationHostLayer object.
**/
-(instancetype)initWithFrame:(CGRect)newFrame
{
if ( (self = [super initWithFrame:newFrame]) ) {
mutableAnnotations = [[NSMutableArray alloc] init];
}
return self;
}
/// @}
/// @cond
-(instancetype)initWithLayer:(id)layer
{
if ( (self = [super initWithLayer:layer]) ) {
CPTAnnotationHostLayer *theLayer = (CPTAnnotationHostLayer *)layer;
mutableAnnotations = theLayer->mutableAnnotations;
}
return self;
}
/// @endcond
#pragma mark -
#pragma mark NSCoding Methods
/// @cond
-(void)encodeWithCoder:(NSCoder *)coder
{
[super encodeWithCoder:coder];
[coder encodeObject:self.mutableAnnotations forKey:@"CPTAnnotationHostLayer.mutableAnnotations"];
}
-(instancetype)initWithCoder:(NSCoder *)coder
{
if ( (self = [super initWithCoder:coder]) ) {
NSArray *annotations = [coder decodeObjectForKey:@"CPTAnnotationHostLayer.mutableAnnotations"];
if ( annotations ) {
mutableAnnotations = [annotations mutableCopy];
}
else {
mutableAnnotations = [[NSMutableArray alloc] init];
}
}
return self;
}
/// @endcond
#pragma mark -
#pragma mark Annotations
-(NSArray *)annotations
{
return [self.mutableAnnotations copy];
}
/**
* @brief Adds an annotation to the receiver.
**/
-(void)addAnnotation:(CPTAnnotation *)annotation
{
if ( annotation ) {
NSMutableArray *annotationArray = self.mutableAnnotations;
if ( ![annotationArray containsObject:annotation] ) {
[annotationArray addObject:annotation];
}
annotation.annotationHostLayer = self;
[annotation positionContentLayer];
}
}
/**
* @brief Removes an annotation from the receiver.
**/
-(void)removeAnnotation:(CPTAnnotation *)annotation
{
if ( [self.mutableAnnotations containsObject:annotation] ) {
annotation.annotationHostLayer = nil;
[self.mutableAnnotations removeObject:annotation];
}
else {
CPTAnnotationHostLayer *hostLayer = annotation.annotationHostLayer;
[NSException raise:CPTException format:@"Tried to remove CPTAnnotation from %@. Host layer was %@.", self, hostLayer];
}
}
/**
* @brief Removes all annotations from the receiver.
**/
-(void)removeAllAnnotations
{
NSMutableArray *allAnnotations = self.mutableAnnotations;
for ( CPTAnnotation *annotation in allAnnotations ) {
annotation.annotationHostLayer = nil;
}
[allAnnotations removeAllObjects];
}
#pragma mark -
#pragma mark Layout
/// @cond
-(NSSet *)sublayersExcludedFromAutomaticLayout
{
NSMutableArray *annotations = self.mutableAnnotations;
if ( annotations.count > 0 ) {
NSMutableSet *excludedSublayers = [[super sublayersExcludedFromAutomaticLayout] mutableCopy];
if ( !excludedSublayers ) {
excludedSublayers = [NSMutableSet set];
}
for ( CPTAnnotation *annotation in annotations ) {
CALayer *content = annotation.contentLayer;
if ( content ) {
[excludedSublayers addObject:content];
}
}
return excludedSublayers;
}
else {
return [super sublayersExcludedFromAutomaticLayout];
}
}
-(void)layoutSublayers
{
[super layoutSublayers];
[self.mutableAnnotations makeObjectsPerformSelector:@selector(positionContentLayer)];
}
/// @endcond
#pragma mark -
#pragma mark Event Handling
/// @name User Interaction
/// @{
/**
* @brief Informs the receiver that the user has
* @if MacOnly pressed the mouse button. @endif
* @if iOSOnly touched the screen. @endif
*
*
* The event is passed in turn to each annotation layer that contains the interaction point.
* If any layer handles the event, subsequent layers are not notified and
* this method immediately returns @YES.
*
* @param event The OS event.
* @param interactionPoint The coordinates of the interaction.
* @return Whether the event was handled or not.
**/
-(BOOL)pointingDeviceDownEvent:(CPTNativeEvent *)event atPoint:(CGPoint)interactionPoint
{
for ( CPTAnnotation *annotation in self.annotations ) {
CPTLayer *content = annotation.contentLayer;
if ( content ) {
if ( CGRectContainsPoint(content.frame, interactionPoint) ) {
BOOL handled = [content pointingDeviceDownEvent:event atPoint:interactionPoint];
if ( handled ) {
return YES;
}
}
}
}
return [super pointingDeviceDownEvent:event atPoint:interactionPoint];
}
/**
* @brief Informs the receiver that the user has
* @if MacOnly released the mouse button. @endif
* @if iOSOnly lifted their finger off the screen. @endif
*
*
* The event is passed in turn to each annotation layer that contains the interaction point.
* If any layer handles the event, subsequent layers are not notified and
* this method immediately returns @YES.
*
* @param event The OS event.
* @param interactionPoint The coordinates of the interaction.
* @return Whether the event was handled or not.
**/
-(BOOL)pointingDeviceUpEvent:(CPTNativeEvent *)event atPoint:(CGPoint)interactionPoint
{
for ( CPTAnnotation *annotation in self.annotations ) {
CPTLayer *content = annotation.contentLayer;
if ( content ) {
if ( CGRectContainsPoint(content.frame, interactionPoint) ) {
BOOL handled = [content pointingDeviceUpEvent:event atPoint:interactionPoint];
if ( handled ) {
return YES;
}
}
}
}
return [super pointingDeviceUpEvent:event atPoint:interactionPoint];
}
/**
* @brief Informs the receiver that the user has moved
* @if MacOnly the mouse with the button pressed. @endif
* @if iOSOnly their finger while touching the screen. @endif
*
*
* The event is passed in turn to each annotation layer that contains the interaction point.
* If any layer handles the event, subsequent layers are not notified and
* this method immediately returns @YES.
*
* @param event The OS event.
* @param interactionPoint The coordinates of the interaction.
* @return Whether the event was handled or not.
**/
-(BOOL)pointingDeviceDraggedEvent:(CPTNativeEvent *)event atPoint:(CGPoint)interactionPoint
{
for ( CPTAnnotation *annotation in self.annotations ) {
CPTLayer *content = annotation.contentLayer;
if ( content ) {
if ( CGRectContainsPoint(content.frame, interactionPoint) ) {
BOOL handled = [content pointingDeviceDraggedEvent:event atPoint:interactionPoint];
if ( handled ) {
return YES;
}
}
}
}
return [super pointingDeviceDraggedEvent:event atPoint:interactionPoint];
}
/**
* @brief Informs the receiver that tracking of
* @if MacOnly mouse moves @endif
* @if iOSOnly touches @endif
* has been cancelled for any reason.
*
*
* The event is passed in turn to each annotation layer.
* If any layer handles the event, subsequent layers are not notified and
* this method immediately returns @YES.
*
* @param event The OS event.
* @return Whether the event was handled or not.
**/
-(BOOL)pointingDeviceCancelledEvent:(CPTNativeEvent *)event
{
for ( CPTAnnotation *annotation in self.annotations ) {
CPTLayer *content = annotation.contentLayer;
if ( content ) {
BOOL handled = [content pointingDeviceCancelledEvent:event];
if ( handled ) {
return YES;
}
}
}
return [super pointingDeviceCancelledEvent:event];
}
/// @}
@end