// // CWDrawerTransition.m // ViewControllerTransition // // Created by chavez on 2017/6/27. // Copyright © 2017年 chavez. All rights reserved. // #import "CWDrawerTransition.h" #import @interface CWDrawerTransition () @property (nonatomic,weak) CWLateralSlideConfiguration *configuration; @end @implementation CWDrawerTransition { CWDrawerTransitiontype _TransitionType; CWDrawerAnimationType _animationType; CGFloat _hiddenDelayTime; } - (instancetype)initWithTransitionType:(CWDrawerTransitiontype)transitionType animationType:(CWDrawerAnimationType)animationType configuration:(CWLateralSlideConfiguration *)configuration { if (self = [super init]) { _TransitionType = transitionType; _animationType = animationType; _configuration = configuration; if (_TransitionType == CWDrawerTransitiontypeHidden) [self setupHiddenAnimationDelayTime]; } return self; } + (instancetype)transitionWithType:(CWDrawerTransitiontype)transitionType animationType:(CWDrawerAnimationType)animationType configuration:(CWLateralSlideConfiguration *)configuration { return [[self alloc] initWithTransitionType:transitionType animationType:animationType configuration:configuration]; } - (void)setupHiddenAnimationDelayTime { _hiddenDelayTime = 0; if ([UIDevice currentDevice].systemVersion.floatValue >= 11.0) { _hiddenDelayTime = 0.03; } } #pragma mark - UIViewControllerAnimatedTransitioning - (NSTimeInterval)transitionDuration:(nullable id )transitionContext { return _TransitionType == CWDrawerTransitiontypeShow ? self.configuration.showAnimDuration : self.configuration.HiddenAnimDuration; } - (void)animateTransition:(id )transitionContext { switch (_TransitionType) { case CWDrawerTransitiontypeShow: [self animationViewShow:transitionContext]; break; case CWDrawerTransitiontypeHidden: [self animationViewHidden:transitionContext]; break; default: break; } } #pragma mark - private methods - (void)animationViewShow:(id )transitionContext { if (_animationType == CWDrawerAnimationTypeDefault) { [self defaultAnimationWithContext:transitionContext]; }else if (_animationType == CWDrawerAnimationTypeMask) { [self maskAnimationWithContext:transitionContext]; }else { } } - (void)animationViewHidden:(id )transitionContext { UIViewController *fromVC = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey]; UIViewController *toVC = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey]; CWMaskView *maskView = [CWMaskView shareInstance]; // 导航控制器的navigationBar在导航栏先隐藏后显示的情况下会被删除，所以过滤掉导航控制器 if (![toVC isKindOfClass:[UINavigationController class]]) { for (UIView *view in toVC.view.subviews) { if (![maskView.toViewSubViews containsObject:view]) { [view removeFromSuperview]; } } } UIView *containerView = [transitionContext containerView]; UIImageView *backImageView; if ([containerView.subviews.firstObject isKindOfClass:[UIImageView class]]) backImageView = containerView.subviews.firstObject; [UIView animateKeyframesWithDuration:[self transitionDuration:transitionContext] delay:_hiddenDelayTime options:UIViewKeyframeAnimationOptionCalculationModeLinear animations:^{ [UIView addKeyframeWithRelativeStartTime:0 relativeDuration:1.0 animations:^{ toVC.view.transform = CGAffineTransformIdentity; fromVC.view.transform = CGAffineTransformIdentity; maskView.alpha = 0; backImageView.transform = CGAffineTransformMakeScale(1.4, 1.4); }]; } completion:^(BOOL finished) { if (![transitionContext transitionWasCancelled]) { maskView.toViewSubViews = nil; [CWMaskView releaseInstance]; [backImageView removeFromSuperview]; } [transitionContext completeTransition:![transitionContext transitionWasCancelled]]; }]; } - (void)defaultAnimationWithContext:(id )transitionContext { UIViewController *fromVC = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey]; UIViewController *toVC = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey]; CWMaskView *maskView = [CWMaskView shareInstance]; maskView.frame = fromVC.view.bounds; [fromVC.view addSubview:maskView]; UIView *containerView = [transitionContext containerView]; UIImageView *imageV; if (self.configuration.backImage) { imageV = [[UIImageView alloc] initWithFrame:containerView.bounds]; imageV.image = self.configuration.backImage; imageV.transform = CGAffineTransformMakeScale(1.4, 1.4); imageV.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight; } [containerView addSubview:imageV]; CGFloat width = self.configuration.distance; CGFloat x = - width / 2; CGFloat ret = 1; if (self.configuration.direction == CWDrawerTransitionFromRight) { x = kCWSCREENWIDTH - width / 2; ret = -1; } toVC.view.frame = CGRectMake(x, 0, CGRectGetWidth(containerView.frame), CGRectGetHeight(containerView.frame)); [containerView addSubview:toVC.view]; [containerView addSubview:fromVC.view]; // 计算缩放后需要平移的距离 CGFloat translationX = width - (kCWSCREENWIDTH * (1 - self.configuration.scaleY) / 2); CGAffineTransform t1 = CGAffineTransformMakeScale(self.configuration.scaleY, self.configuration.scaleY); CGAffineTransform t2 = CGAffineTransformMakeTranslation(ret * translationX, 0); CGAffineTransform fromVCTransform = CGAffineTransformConcat(t1, t2); CGAffineTransform toVCTransform; if (self.configuration.direction == CWDrawerTransitionFromRight) { toVCTransform = CGAffineTransformMakeTranslation(ret * (x - CGRectGetWidth(containerView.frame) + width), 0); }else { toVCTransform = CGAffineTransformMakeTranslation(ret * width / 2, 0); } [UIView animateKeyframesWithDuration:[self transitionDuration:transitionContext] delay:0 options:0 animations:^{ [UIView addKeyframeWithRelativeStartTime:0.0 relativeDuration:1.0 animations:^{ fromVC.view.transform = fromVCTransform; toVC.view.transform = toVCTransform; imageV.transform = CGAffineTransformIdentity; maskView.alpha = self.configuration.maskAlpha; }]; } completion:^(BOOL finished) { if (![transitionContext transitionWasCancelled]) { maskView.userInteractionEnabled = YES; // 导航控制器的navigationbar可能是先隐藏再显示，这里会不在fromVC.view.subviews，上面移除时会有问题 if (![toVC isKindOfClass:[UINavigationController class]]) { maskView.toViewSubViews = fromVC.view.subviews; } [transitionContext completeTransition:YES]; [containerView addSubview:fromVC.view]; }else { [imageV removeFromSuperview]; [CWMaskView releaseInstance]; [transitionContext completeTransition:NO]; } }]; } - (void)maskAnimationWithContext:(id )transitionContext { UIViewController *fromVC = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey]; UIViewController *toVC = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey]; CWMaskView *maskView = [CWMaskView shareInstance]; maskView.frame = fromVC.view.bounds; [fromVC.view addSubview:maskView]; UIView *containerView = [transitionContext containerView]; CGFloat width = self.configuration.distance; CGFloat x = - width; CGFloat ret = 1; if (self.configuration.direction == CWDrawerTransitionFromRight) { x = kCWSCREENWIDTH; ret = -1; } toVC.view.frame = CGRectMake(x, 0, width, CGRectGetHeight(containerView.frame)); [containerView addSubview:fromVC.view]; [containerView addSubview:toVC.view]; CGAffineTransform toVCTransiform = CGAffineTransformMakeTranslation(ret * width , 0); [UIView animateKeyframesWithDuration:[self transitionDuration:transitionContext] delay:0 options:0 animations:^{ [UIView addKeyframeWithRelativeStartTime:0.0 relativeDuration:1.0 animations:^{ toVC.view.transform = toVCTransiform; maskView.alpha = self.configuration.maskAlpha; }]; } completion:^(BOOL finished) { if (![transitionContext transitionWasCancelled]) { [transitionContext completeTransition:YES]; maskView.toViewSubViews = fromVC.view.subviews; [containerView addSubview:fromVC.view]; [containerView bringSubviewToFront:toVC.view]; maskView.userInteractionEnabled = YES; }else { [CWMaskView releaseInstance]; [transitionContext completeTransition:NO]; } }]; } - (void)dealloc { // NSLog(@"%s",__func__); } @end @implementation CWMaskView static CWMaskView *cw_shareInstance = nil; static dispatch_once_t cw_onceToken; + (instancetype)shareInstance { dispatch_once(&cw_onceToken, ^{ cw_shareInstance = [[CWMaskView alloc] init]; }); return cw_shareInstance; } + (void)releaseInstance{ [cw_shareInstance removeFromSuperview]; cw_onceToken = 0; cw_shareInstance = nil; } - (void)dealloc { // NSLog(@"mask dealloc"); } - (instancetype)initWithFrame:(CGRect)frame { if (self = [super initWithFrame:frame]) { self.backgroundColor = [UIColor blackColor]; self.alpha = 0; self.autoresizingMask = UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight; UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTap)]; tap.numberOfTapsRequired = 1; [self addGestureRecognizer:tap]; UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(handleGesture:)]; [self addGestureRecognizer:pan]; } return self; } - (void)singleTap { [[NSNotificationCenter defaultCenter] postNotificationName:CWLateralSlideTapNoticationKey object:self]; } - (void)handleGesture:(UIPanGestureRecognizer *)pan { [[NSNotificationCenter defaultCenter] postNotificationName:CWLateralSlidePanNoticationKey object:pan]; } // 屏蔽掉touchesbegin的响应链 - (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { } @end NSString *const CWLateralSlideMaskViewKey = @"CWLateralSlideMaskViewKey"; NSString *const CWLateralSlideAnimatorKey = @"CWLateralSlideAnimatorKey"; NSString *const CWLateralSlideInterativeKey = @"CWLateralSlideInterativeKey"; NSString *const CWLateralSlidePanNoticationKey = @"CWLateralSlidePanNoticationKey"; NSString *const CWLateralSlideTapNoticationKey = @"CWLateralSlideTapNoticationKey"; NSString *const CWLateralSlideDirectionKey = @"CWLateralSlideDirectionKey";