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| // | ||
| // CEZoomAnimationController.h | ||
| // TransitionsDemo | ||
| // | ||
| // Created by Colin Eberhardt on 22/09/2013. | ||
| // Copyright (c) 2013 Colin Eberhardt. All rights reserved. | ||
| // | ||
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| #import "CEReversibleAnimationController.h" | ||
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| @interface CECardsAnimationController : CEReversibleAnimationController | ||
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| @end |
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| // | ||
| // CEZoomAnimationController.m | ||
| // TransitionsDemo | ||
| // | ||
| // Created by Colin Eberhardt on 22/09/2013. | ||
| // Copyright (c) 2013 Colin Eberhardt. All rights reserved. | ||
| // | ||
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| #import "CECardsAnimationController.h" | ||
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| @implementation CECardsAnimationController | ||
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| - (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext fromVC:(UIViewController *)fromVC toVC:(UIViewController *)toVC fromView:(UIView *)fromView toView:(UIView *)toView { | ||
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| if(self.reverse){ | ||
| [self executeReverseAnimation:transitionContext fromVC:fromVC toVC:toVC fromView:fromView toView:toView]; | ||
| } else { | ||
| [self executeForwardsAnimation:transitionContext fromVC:fromVC toVC:toVC fromView:fromView toView:toView]; | ||
| } | ||
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| } | ||
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| -(void)executeForwardsAnimation:(id<UIViewControllerContextTransitioning>)transitionContext fromVC:(UIViewController *)fromVC toVC:(UIViewController *)toVC fromView:(UIView *)fromView toView:(UIView *)toView { | ||
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| UIView* containerView = [transitionContext containerView]; | ||
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| // positions the to- view off the bottom of the sceen | ||
| CGRect offScreenFrame = containerView.frame; | ||
| offScreenFrame.origin.y = containerView.frame.size.height; | ||
| toView.frame = offScreenFrame; | ||
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| [containerView insertSubview:toView aboveSubview:fromView]; | ||
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| CATransform3D t1 = [self firstTransform]; | ||
| CATransform3D t2 = [self secondTransformWithView:fromView]; | ||
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| [UIView animateKeyframesWithDuration:self.duration delay:0.0 options:UIViewKeyframeAnimationOptionCalculationModeCubic animations:^{ | ||
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| // push the from- view to the back | ||
| [UIView addKeyframeWithRelativeStartTime:0.0f relativeDuration:0.4f animations:^{ | ||
| fromView.layer.transform = t1; | ||
| fromView.alpha = 0.6; | ||
| }]; | ||
| [UIView addKeyframeWithRelativeStartTime:0.2f relativeDuration:0.4f animations:^{ | ||
| fromView.layer.transform = t2; | ||
| }]; | ||
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| // slide the to- view upwards. In his original implementation Tope used a 'spring' animation, however | ||
| // this does not work with keyframes, so we siulate it by overshooting the final location in | ||
| // the first keyframe | ||
| [UIView addKeyframeWithRelativeStartTime:0.6f relativeDuration:0.2f animations:^{ | ||
| toView.frame = CGRectOffset(containerView.frame, 0.0, -30.0); | ||
| }]; | ||
| [UIView addKeyframeWithRelativeStartTime:0.8f relativeDuration:0.2f animations:^{ | ||
| toView.frame = containerView.frame; | ||
| }]; | ||
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| } completion:^(BOOL finished) { | ||
| [transitionContext completeTransition:YES]; | ||
| }]; | ||
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| } | ||
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| -(void)executeReverseAnimation:(id<UIViewControllerContextTransitioning>)transitionContext fromVC:(UIViewController *)fromVC toVC:(UIViewController *)toVC fromView:(UIView *)fromView toView:(UIView *)toView { | ||
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| UIView* containerView = [transitionContext containerView]; | ||
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| // positions the to- view behind the from- view | ||
| toView.frame = containerView.frame; | ||
| CATransform3D scale = CATransform3DIdentity; | ||
| toView.layer.transform = CATransform3DScale(scale, 0.6, 0.6, 1); | ||
| toView.alpha = 0.6; | ||
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| [containerView insertSubview:toView belowSubview:fromView]; | ||
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| CGRect frameOffScreen = containerView.frame; | ||
| frameOffScreen.origin.y = containerView.frame.size.height; | ||
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| CATransform3D t1 = [self firstTransform]; | ||
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| [UIView animateKeyframesWithDuration:self.duration delay:0 options:UIViewKeyframeAnimationOptionCalculationModeCubic animations:^{ | ||
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| // push the from- view off the bottom of the screen | ||
| [UIView addKeyframeWithRelativeStartTime:0.0f relativeDuration:0.5f animations:^{ | ||
| fromView.frame = frameOffScreen; | ||
| }]; | ||
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| // animate the to- view into place | ||
| [UIView addKeyframeWithRelativeStartTime:0.3f relativeDuration:0.45f animations:^{ | ||
| toView.layer.transform = t1; | ||
| toView.alpha = 1.0; | ||
| }]; | ||
| [UIView addKeyframeWithRelativeStartTime:0.75f relativeDuration:0.25f animations:^{ | ||
| toView.layer.transform = CATransform3DIdentity; | ||
| }]; | ||
| } completion:^(BOOL finished) { | ||
| [transitionContext completeTransition:YES]; | ||
| }]; | ||
| } | ||
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| -(CATransform3D)firstTransform{ | ||
| CATransform3D t1 = CATransform3DIdentity; | ||
| t1.m34 = 1.0/-900; | ||
| t1 = CATransform3DScale(t1, 0.95, 0.95, 1); | ||
| t1 = CATransform3DRotate(t1, 15.0f * M_PI/180.0f, 1, 0, 0); | ||
| return t1; | ||
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| } | ||
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| -(CATransform3D)secondTransformWithView:(UIView*)view{ | ||
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| CATransform3D t2 = CATransform3DIdentity; | ||
| t2.m34 = [self firstTransform].m34; | ||
| t2 = CATransform3DTranslate(t2, 0, view.frame.size.height*-0.08, 0); | ||
| t2 = CATransform3DScale(t2, 0.8, 0.8, 1); | ||
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| return t2; | ||
| } | ||
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| @end |
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