gistfile1.m

//
//  ASTransitionAnimator.m
//  Maps
//
//  Created by Hasan on 6/16/14.
//  Copyright (c) 2014 AssembleLabs. All rights reserved.
//

#import "ASSlideUpTransitionAnimator.h"

@implementation ASSlideUpTransitionAnimator

// This is used for percent driven interactive transitions, as well as for container controllers that have companion animations that might need to
// synchronize with the main animation.
- (NSTimeInterval)transitionDuration:(id <UIViewControllerContextTransitioning>)transitionContext
{
    return 0.3;
}

// This method can only  be a nop if the transition is interactive and not a percentDriven interactive transition.
- (void)animateTransition:(id <UIViewControllerContextTransitioning>)transitionContext
{
    // Grab the from and to view controllers from the context
    UIViewController *fromViewController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
    UIViewController *toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
    
    CGRect bounds = fromViewController.view.bounds;
    
    if (self.presenting) {
        fromViewController.view.userInteractionEnabled = NO;
        
        [transitionContext.containerView addSubview:fromViewController.view];
        [transitionContext.containerView addSubview:toViewController.view];
        
        toViewController.view.alpha = 0;
        toViewController.view.frame = CGRectMake(0, bounds.size.height, bounds.size.width, bounds.size.height);
        
        
        [UIView animateWithDuration:[self transitionDuration:transitionContext]
                              delay:0.3
             usingSpringWithDamping:0.5
              initialSpringVelocity:0.3
                            options:UIViewAnimationOptionAllowUserInteraction animations:^{
                                  fromViewController.view.tintAdjustmentMode = UIViewTintAdjustmentModeDimmed;
                                  toViewController.view.frame = CGRectMake(0, 0, bounds.size.width, bounds.size.height);
                                  toViewController.view.alpha = 1.0f;
                                  
                              } completion:^(BOOL finished) {
                                  [transitionContext completeTransition:YES];
                                  
                              }];
    }
    else {
        toViewController.view.userInteractionEnabled = YES;
        
        [transitionContext.containerView addSubview:toViewController.view];
        [transitionContext.containerView addSubview:fromViewController.view];
        
        [UIView animateWithDuration:[self transitionDuration:transitionContext]
                              delay:0.3
             usingSpringWithDamping:0.5
              initialSpringVelocity:0.5
                            options:UIViewAnimationOptionAllowUserInteraction animations:^{
                                toViewController.view.tintAdjustmentMode = UIViewTintAdjustmentModeAutomatic;
                                fromViewController.view.alpha = 0.0f;
        } completion:^(BOOL finished) {
            [transitionContext completeTransition:YES];
        }];
    }
}

@end