Animation->Popup with a bump effect

CustomModalAnimation.m

//
//  CustomModalAnimation.m
//  Wineot
//
//  Created by Werck Ayrton on 18/02/2015.
//  Copyright (c) 2015 wineot. All rights reserved.
//

#import "CustomModalAnimation.h"

#pragma mark ->PresentingAnimationController

@interface PresentingAnimationController ()


@end

@implementation PresentingAnimationController

- (NSTimeInterval)transitionDuration:(id<UIViewControllerContextTransitioning>)transitionContext
{
    return 0.5f;
}

- (void)animateTransition:(id <UIViewControllerContextTransitioning>)transitionContext
{    
    UIView *fromView = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey].view;
    fromView.tintAdjustmentMode = UIViewTintAdjustmentModeDimmed;
    fromView.userInteractionEnabled = NO;
    
    UIView *toView = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey].view;
    //TODO find a way to have custom value to replace 50
    toView.frame = CGRectMake(0,
                              0,
                              self.toViewWidth,
                              self.toViewHeight);
                              //CGRectGetWidth(transitionContext.containerView.bounds) - self.toViewWidth,
                              //CGRectGetHeight(transitionContext.containerView.bounds) - self.toViewHeight);
    CGPoint p = CGPointMake(transitionContext.containerView.center.x, -transitionContext.containerView.center.y);
    toView.center = p;
    
    [transitionContext.containerView addSubview:toView];
    
    POPSpringAnimation *positionAnimation = [POPSpringAnimation animationWithPropertyNamed:kPOPLayerPositionY];
    positionAnimation.toValue = @(transitionContext.containerView.center.y);
    positionAnimation.springBounciness = 10;
    [positionAnimation setCompletionBlock:^(POPAnimation *anim, BOOL finished) {
        [transitionContext completeTransition:YES];
    }];
    
    POPSpringAnimation *scaleAnimation = [POPSpringAnimation animationWithPropertyNamed:kPOPLayerScaleXY];
    scaleAnimation.springBounciness = 20;
    scaleAnimation.fromValue = [NSValue valueWithCGPoint:CGPointMake(1.2, 1.4)];
    
    [toView.layer pop_addAnimation:positionAnimation forKey:@"positionAnimation"];
    [toView.layer pop_addAnimation:scaleAnimation forKey:@"scaleAnimation"];
    
}

@end

#pragma mark ->DismissingAnimationController

@implementation DismissingAnimationController

- (NSTimeInterval)transitionDuration:(id <UIViewControllerContextTransitioning>)transitionContext
{
    return 0.5f;
}

- (void)animateTransition:(id <UIViewControllerContextTransitioning>)transitionContext
{
    
    UIView *toView = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey].view;
    toView.tintAdjustmentMode = UIViewTintAdjustmentModeNormal;
    toView.userInteractionEnabled = YES;
    
    UIView *fromView = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey].view;
    
    
    POPBasicAnimation *closeAnimation = [POPBasicAnimation animationWithPropertyNamed:kPOPLayerPositionY];
    closeAnimation.toValue = @(-fromView.layer.position.y);
    [closeAnimation setCompletionBlock:^(POPAnimation *anim, BOOL finished) {
        [transitionContext completeTransition:YES];
    }];
    
    POPSpringAnimation *scaleDownAnimation = [POPSpringAnimation animationWithPropertyNamed:kPOPLayerScaleXY];
    scaleDownAnimation.springBounciness = 20;
    scaleDownAnimation.toValue = [NSValue valueWithCGPoint:CGPointMake(0, 0)];
    
    [fromView.layer pop_addAnimation:closeAnimation forKey:@"closeAnimation"];
    [fromView.layer pop_addAnimation:scaleDownAnimation forKey:@"scaleDown"];
    
}
@end