| // Copyright 2018-present the Material Components for iOS authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #import "MDCMaskedTransitionController.h" |
| |
| #import "private/MDCMaskedTransition.h" |
| #import "private/MDCMaskedPresentationController.h" |
| #import "private/MDCMaskedTransitionMotionForContext.h" |
| |
| @implementation MDCMaskedTransitionController |
| |
| - (instancetype)initWithSourceView:(UIView *)sourceView { |
| self = [self init]; |
| if (self) { |
| _sourceView = sourceView; |
| } |
| return self; |
| } |
| |
| - (instancetype)init { |
| self = [super init]; |
| return self; |
| } |
| |
| #pragma mark - UIViewControllerTransitioningDelegate |
| |
| - (id<UIViewControllerAnimatedTransitioning>) |
| animationControllerForPresentedController:(UIViewController *)presented |
| presentingController:(UIViewController *)presenting |
| sourceController:(UIViewController *)source { |
| if (_sourceView == nil) { |
| return nil; |
| } |
| return [[MDCMaskedTransition alloc] initWithSourceView:self.sourceView |
| direction:MDMTransitionDirectionForward]; |
| } |
| |
| - (id<UIViewControllerAnimatedTransitioning>) |
| animationControllerForDismissedController:(UIViewController *)dismissed { |
| if (_sourceView == nil) { |
| return nil; |
| } |
| MDCMaskedTransitionMotionSpec motionSpecification = |
| MDCMaskedTransitionMotionSpecForContext(dismissed.presentingViewController.view.superview, |
| dismissed); |
| if (motionSpecification.shouldSlideWhenCollapsed) { |
| return nil; |
| } |
| return [[MDCMaskedTransition alloc] initWithSourceView:self.sourceView |
| direction:MDMTransitionDirectionBackward]; |
| } |
| |
| - (UIPresentationController *) |
| presentationControllerForPresentedViewController:(UIViewController *)presented |
| presentingViewController:(UIViewController *)presenting |
| sourceViewController:(UIViewController *)source { |
| return |
| [[MDCMaskedPresentationController alloc] initWithPresentedViewController:presented |
| presentingViewController:presenting |
| calculateFrameOfPresentedView:self.calculateFrameOfPresentedView |
| sourceView:self.sourceView]; |
| } |
| |
| @end |
