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20 changes: 20 additions & 0 deletions
20
AdvancedGraphics/AdvancedGraphics/ImplicitAnimationViewController.h
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| // | ||
| // ImplicitAnimationViewController.h | ||
| // AdvancedGraphics | ||
| // | ||
| // Created by Ben Sandofsky on 8/7/15. | ||
| // Copyright © 2015 Chroma Noir LLC. All rights reserved. | ||
| // | ||
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| #import <UIKit/UIKit.h> | ||
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| @interface ImplicitAnimationViewController : UIViewController | ||
| @end | ||
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| @interface MyCustomView : UIView | ||
| @property (nonatomic, assign) BOOL isGoing; | ||
| @end | ||
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| @interface MyCustomLayer:CALayer | ||
| @property (nonatomic, assign) BOOL isGoing; | ||
| @end |
91 changes: 91 additions & 0 deletions
91
AdvancedGraphics/AdvancedGraphics/ImplicitAnimationViewController.m
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| // | ||
| // ImplicitAnimationViewController.m | ||
| // AdvancedGraphics | ||
| // | ||
| // Created by Ben Sandofsky on 8/7/15. | ||
| // Copyright © 2015 Chroma Noir LLC. All rights reserved. | ||
| // | ||
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| #import "ImplicitAnimationViewController.h" | ||
| #import <QuartzCore/QuartzCore.h> | ||
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| @interface ImplicitAnimationViewController () | ||
| @property (weak, nonatomic) IBOutlet NSLayoutConstraint *centerConstraint; | ||
| @property (weak, nonatomic) IBOutlet MyCustomView *animatedView; | ||
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| @end | ||
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| @implementation ImplicitAnimationViewController | ||
| - (IBAction)didTapGo:(UIBarButtonItem *)sender { | ||
| self.centerConstraint.constant = 100; | ||
| [UIView animateWithDuration:0.35 animations:^{ | ||
| [self.view layoutIfNeeded]; | ||
| self.animatedView.isGoing = true; | ||
| }]; | ||
| } | ||
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| - (void)viewWillAppear:(BOOL)animated | ||
| { | ||
| [super viewWillAppear:animated]; | ||
| self.centerConstraint.constant = -100; | ||
| } | ||
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| - (void)viewWillDisappear:(BOOL)animated | ||
| { | ||
| [super viewWillDisappear:animated]; | ||
| } | ||
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| - (nullable id<CAAction>)actionForLayer:(CALayer *)layer forKey:(NSString *)event | ||
| { | ||
| return nil; | ||
| } | ||
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| @end | ||
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| @implementation MyCustomView | ||
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| + (Class)layerClass { | ||
| return [MyCustomLayer class]; | ||
| } | ||
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| - (nullable id<CAAction>)actionForLayer:(CALayer *)layer forKey:(NSString *)event | ||
| { | ||
| id action = [super actionForLayer:layer forKey:event]; | ||
| NSLog(@"key: %@, Action: %@", event, action); | ||
| return action; | ||
| } | ||
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| - (void)setIsGoing:(BOOL)isGoing | ||
| { | ||
| MyCustomLayer *l = (MyCustomLayer *)self.layer; | ||
| l.isGoing = isGoing; | ||
| } | ||
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| - (BOOL)isGoing | ||
| { | ||
| return [(MyCustomLayer *)self.layer isGoing]; | ||
| } | ||
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| @end | ||
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| @implementation MyCustomLayer | ||
| - (id)init | ||
| { | ||
| self = [super init]; | ||
| if (self){ | ||
| [self _updateColor]; | ||
| } | ||
| return self; | ||
| } | ||
| - (void)setIsGoing:(BOOL)isGoing | ||
| { | ||
| _isGoing = isGoing; | ||
| [self _updateColor]; | ||
| } | ||
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| - (void)_updateColor | ||
| { | ||
| self.backgroundColor = _isGoing ? [UIColor greenColor].CGColor : [UIColor redColor].CGColor; | ||
| } | ||
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| @end |