segue

customsegue.m

//
//  HorizontalSlideSegue.m
//  YouLapse
//
//  Created by Nico Hämäläinen on 9/27/13.
//  Copyright (c) 2013 YouLapse Oy. All rights reserved.
//

#import "HorizontalSlidePushSegue.h"

@implementation HorizontalSlidePushSegue

- (id)initWithIdentifier:(NSString *)identifier source:(UIViewController *)source destination:(UIViewController *)destination
{
    if (self = [super initWithIdentifier:identifier source:source destination:destination]) {
        _isUnwinding = NO;
    }
    return self;
}

- (void)perform
{
    UIViewController *sourceViewController = (UIViewController*)[self sourceViewController];
    UIViewController *destinationController = (UIViewController*)[self destinationViewController];

    CATransition* transition = [CATransition animation];
    transition.type = kCATransitionPush;
    
    if (_isUnwinding == YES) {
        transition.subtype = kCATransitionFromLeft;
        [sourceViewController.navigationController.view.layer addAnimation:transition forKey:kCATransition];
        [sourceViewController.navigationController popToViewController:destinationController animated:NO];
    } else {
        transition.subtype = kCATransitionFromRight;
        [sourceViewController.navigationController.view.layer addAnimation:transition forKey:kCATransition];
        [sourceViewController.navigationController pushViewController:destinationController animated:NO];
    }
}

@end