##Facebook POP for Swift
What is this? A wrapper for Facebook POP written in Objective-C (whereas POP is written in Objective-C++)
Why would I need this? Objective-C++ can't be imported into Swift, as of June 24 2014.
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####Example
// Create view to animate
var view = UIView(frame: UIScreen.mainScreen().bounds)
view.backgroundColor = UIColor.blueColor()
// Create animation
var anim = _POPSpringAnimation(tension: 100, friction: 10, mass: 1)
anim.property = _POPAnimatableProperty(name: kPOPLayerOpacity)
anim.toValue = 0
_POPAnimation.addAnimation(anim, key: anim.property.name, obj: view.layer)--
####Install
Add #import "POPSwiftWrapper.h" to the .h file pointed to under Build Settings -> Swift Compiler - Code Generation -> Objective-C Bridging Header.
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####Swift classes
I didn't wrap every POP class, as you will see. Here's a list of what I wrapped:
- _POPAnimation
- _POPPropertyAnimation
- _POPSpringAnimation
- _POPBasicAnimation
- _POPDecayAnimation
- _POPAnimatableProperty
- _POPMutableAnimatableProperty
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####_POPAnimation class methods
I've added some class methods to _POPAnimation that implement POP's NSObject category. If you want, you can make a Swift extension on NSObject like POP does it, but these class methods allow AnyObject to be the associated object, which allows the animation of Swift object properties. In order to do this, a category on POPAnimator is required and can be found at the bottom of POPSwiftWrapper.h.
+ (void) addAnimation:(_POPAnimation*)anim key:(NSString*)key obj:(id)obj;
+ (void) removeAllAnimations:(id)obj;
+ (void) removeAnimationForKey:(NSString*)key obj:(id)obj;
+ (NSArray*) animationKeys:(id)obj;
+ (_POPAnimation*) animationForKey:(NSString*)key obj:(id)obj;...use like this...
_POPAnimation.addAnimation(anim, key: anim.property.name, obj: view.layer)
_POPAnimation.removeAllAnimations(view.layer)
_POPAnimation.removeAnimationsForKey(kPOPLayerOpacity, obj: view.layer)
var keys = _POPAnimation.animationKeys(view.layer)
var anim = _POPAnimation(forKey: kPOPLayerOpacity, obj: view.layer)--
####Added convenience initializers
I added some convenience initializers to _POPSpringAnimation, _POPBasicAnimation, and _POPDecayAnimation. I implemented - (id) mutableCopy {} in these three, as well! Enjoy, or take them out!
_POPSpringAnimation
- (instancetype) initWithTension:(CGFloat)tension friction:(CGFloat)friction mass:(CGFloat)mass;
- (instancetype) initWithTension:(CGFloat)tension friction:(CGFloat)friction mass:(CGFloat)mass velocity:(CGFloat)velocity;...use like this...
var anim = _POPSpringAnimation(tension: 100, friction: 10, mass: 1)
var anim = _POPSpringAnimation(tension: 100, friction: 10, mass: 1, velocity: 1000)_POPDecayAnimation
-(instancetype)initWithVelocity:(CGFloat)velocity;
-(instancetype)initWithVelocity:(CGFloat)velocity decel:(CGFloat)decel;...use like this...
var anim = _POPDecayAnimation(velocity: 1000)
var anim = _POPDecayAnimation(velocity: 1000, decel: 0.995)_POPBasicAnimation
- (instancetype) initWithDuration:(CGFloat)duration;
- (instancetype) initWithDuration:(CGFloat)duration timingFunction:(CAMediaTimingFunction*)timingFunction;...use like this...
var anim = _POPBasicAnimation(duration: 1)
var anim = _POPBasicAnimation(duration: 1, timingFunction: CAMediaTimingFunction(controlPoints: 0, 0, 1, 1))--
####POPProperty.swift
This file provides POP's property keys (eg: kPOPLayerBounds) as Swift constant Strings. You can also access POP's threshold values through kPOPThresholdColor, kPOPThresholdPoint, and kPOPThresholdScale.
Note: I didn't port all POP-supported property keys. Sorry for any inconvenience!
--
####Typealias
Take advantage of Swift's typealias to make the wrapper names more memorable/readable.
typealias Animation = _POPAnimation
typealias SpringAnimation = _POPSpringAnimation
typealias DecayAnimation = _POPDecayAnimation
typealias BasicAnimation = _POPBasicAnimation
typealias AnimatableProperty = _POPAnimatableProperty
typealias MutableAnimatableProperty = _POPMutableAnimatableProperty--
Created by Alec Larson (@aleclarsoniv)