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react-native/Libraries/NativeAnimation/Nodes/RCTAnimatedNode.h

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Add support for native animations on iOS Summary: Currently on iOS animations are being performed on the JS thread. This ports animations over to the native thread and performs them natively. A lot of this work has already been done on Android, but this PR enables a few animation nodes that Android doesn't yet support such as Transform, Multiplication, and Addition nodes. Also there is a demo of the native animations added to the UIExplorer app. Closes https://github.com/facebook/react-native/pull/7884 Reviewed By: javache Differential Revision: D3409179 Pulled By: nicklockwood fbshipit-source-id: ef2d8840032e0c32f49e4a16ba86d448662e1751
2016-06-09 17:34:41 +00:00
/**
* Copyright (c) 2015-present, Facebook, Inc.
*
Update license headers for MIT license Summary: Includes React Native and its dependencies Fresco, Metro, and Yoga. Excludes samples/examples/docs. find: ^(?:( *)|( *(?:[\*~#]|::))( )? *)?Copyright (?:\(c\) )?(\d{4})\b.+Facebook[\s\S]+?BSD[\s\S]+?(?:this source tree|the same directory)\.$ replace: $1$2$3Copyright (c) $4-present, Facebook, Inc.\n$2\n$1$2$3This source code is licensed under the MIT license found in the\n$1$2$3LICENSE file in the root directory of this source tree. Reviewed By: TheSavior, yungsters Differential Revision: D7007050 fbshipit-source-id: 37dd6bf0ffec0923bfc99c260bb330683f35553e
2018-02-17 02:24:55 +00:00
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
Add support for native animations on iOS Summary: Currently on iOS animations are being performed on the JS thread. This ports animations over to the native thread and performs them natively. A lot of this work has already been done on Android, but this PR enables a few animation nodes that Android doesn't yet support such as Transform, Multiplication, and Addition nodes. Also there is a demo of the native animations added to the UIExplorer app. Closes https://github.com/facebook/react-native/pull/7884 Reviewed By: javache Differential Revision: D3409179 Pulled By: nicklockwood fbshipit-source-id: ef2d8840032e0c32f49e4a16ba86d448662e1751
2016-06-09 17:34:41 +00:00
*/
#import <Foundation/Foundation.h>
Support for animated tracking in native driver Summary: This PR adds support for Animated tracking to Animated Native Driver implementation on Android and iOS. Animated tracking allows for animation to be started with a "dynamic" end value. Instead of passing a fixed number as end value we can pass a reference to another Animated.Value. Then when that value changes, the animation will be reconfigured to drive the animation to the new destination point. What is important is that animation will keep its state in the process of updating "toValue". That is if it is a spring animation and the end value changes while the previous animation still hasn't settled the new animation will start from the current position and will inherit current velocity. This makes end value transitions very smooth. Animated tracking is available in JS implementation of Animated library but not in the native implementation. Therefore until now, it wasn't possible to utilize native driver when using animated tracking. Offloading animation from JS thread turns out to be crucial for gesture driven animations. This PR is a step forward towards feature parity between JS and native implementations of Animated. Here is a link to example video that shows how tracking can be used to implement chat heads effect: https://twitter.com/kzzzf/status/958362032650244101 In addition this PR fixes an issue with frames animation driver on Android that because of rounding issues was taking one extra frame to start. Because of that change I had to update a number of Android unit tests that were relying on that behavior and running that one additional animation step prior to performing checks. As a part of this PR I'm adding three unit tests for each of the platforms that verifies most important aspects of this implementation. Please refer to the code and look at the test cases top level comments to learn what they do. I'm also adding a section to "Native Animated Example" screen in RNTester app that provides a test case for tracking. In the example we have blue square that fallows the red line drawn on screen. Line uses Animated.Value for it's position while square is connected via tracking spring animation to that value. So it is ought to follow the line. When user taps in the area surrounding the button new position for the red line is selected at random and the value updates. Then we can watch blue screen animate to that position. You can also refer to this video that I use to demonstrate how tracking can be linked with native gesture events using react-native-gesture-handler lib: https://twitter.com/kzzzf/status/958362032650244101 [GENERAL][FEATURE][Native Animated] - Added support for animated tracking to native driver. Now you can use `useNativeDriver` flag with animations that track other Animated.Values Closes https://github.com/facebook/react-native/pull/17896 Differential Revision: D6974170 Pulled By: hramos fbshipit-source-id: 50e918b36ee10f80c1deb866c955661d4cc2619b
2018-02-16 19:43:34 +00:00
@class RCTNativeAnimatedNodesManager;
Add support for native animations on iOS Summary: Currently on iOS animations are being performed on the JS thread. This ports animations over to the native thread and performs them natively. A lot of this work has already been done on Android, but this PR enables a few animation nodes that Android doesn't yet support such as Transform, Multiplication, and Addition nodes. Also there is a demo of the native animations added to the UIExplorer app. Closes https://github.com/facebook/react-native/pull/7884 Reviewed By: javache Differential Revision: D3409179 Pulled By: nicklockwood fbshipit-source-id: ef2d8840032e0c32f49e4a16ba86d448662e1751
2016-06-09 17:34:41 +00:00
@interface RCTAnimatedNode : NSObject
- (instancetype)initWithTag:(NSNumber *)tag
config:(NSDictionary<NSString *, id> *)config NS_DESIGNATED_INITIALIZER;
@property (nonatomic, readonly) NSNumber *nodeTag;
Support for animated tracking in native driver Summary: This PR adds support for Animated tracking to Animated Native Driver implementation on Android and iOS. Animated tracking allows for animation to be started with a "dynamic" end value. Instead of passing a fixed number as end value we can pass a reference to another Animated.Value. Then when that value changes, the animation will be reconfigured to drive the animation to the new destination point. What is important is that animation will keep its state in the process of updating "toValue". That is if it is a spring animation and the end value changes while the previous animation still hasn't settled the new animation will start from the current position and will inherit current velocity. This makes end value transitions very smooth. Animated tracking is available in JS implementation of Animated library but not in the native implementation. Therefore until now, it wasn't possible to utilize native driver when using animated tracking. Offloading animation from JS thread turns out to be crucial for gesture driven animations. This PR is a step forward towards feature parity between JS and native implementations of Animated. Here is a link to example video that shows how tracking can be used to implement chat heads effect: https://twitter.com/kzzzf/status/958362032650244101 In addition this PR fixes an issue with frames animation driver on Android that because of rounding issues was taking one extra frame to start. Because of that change I had to update a number of Android unit tests that were relying on that behavior and running that one additional animation step prior to performing checks. As a part of this PR I'm adding three unit tests for each of the platforms that verifies most important aspects of this implementation. Please refer to the code and look at the test cases top level comments to learn what they do. I'm also adding a section to "Native Animated Example" screen in RNTester app that provides a test case for tracking. In the example we have blue square that fallows the red line drawn on screen. Line uses Animated.Value for it's position while square is connected via tracking spring animation to that value. So it is ought to follow the line. When user taps in the area surrounding the button new position for the red line is selected at random and the value updates. Then we can watch blue screen animate to that position. You can also refer to this video that I use to demonstrate how tracking can be linked with native gesture events using react-native-gesture-handler lib: https://twitter.com/kzzzf/status/958362032650244101 [GENERAL][FEATURE][Native Animated] - Added support for animated tracking to native driver. Now you can use `useNativeDriver` flag with animations that track other Animated.Values Closes https://github.com/facebook/react-native/pull/17896 Differential Revision: D6974170 Pulled By: hramos fbshipit-source-id: 50e918b36ee10f80c1deb866c955661d4cc2619b
2018-02-16 19:43:34 +00:00
@property (nonatomic, weak) RCTNativeAnimatedNodesManager *manager;
Add support for native animations on iOS Summary: Currently on iOS animations are being performed on the JS thread. This ports animations over to the native thread and performs them natively. A lot of this work has already been done on Android, but this PR enables a few animation nodes that Android doesn't yet support such as Transform, Multiplication, and Addition nodes. Also there is a demo of the native animations added to the UIExplorer app. Closes https://github.com/facebook/react-native/pull/7884 Reviewed By: javache Differential Revision: D3409179 Pulled By: nicklockwood fbshipit-source-id: ef2d8840032e0c32f49e4a16ba86d448662e1751
2016-06-09 17:34:41 +00:00
@property (nonatomic, copy, readonly) NSDictionary<NSString *, id> *config;
Fix potential retain cycles in Animated iOS Summary: Fixes potential retain cycles detected by an internal fb tool. ``` First: __NSDictionaryM -> RCTPropsAnimatedNode -> _parentNodes -> __NSDictionaryM -> RCTStyleAnimatedNode -> _childNodes -> __NSDictionaryM Second: RCTScrollView -> _eventDispatcher -> RCTEventDispatcher -> _observers -> __NSArrayM -> RCTNativeAnimatedModule -> _nodesManager -> RCTNativeAnimatedNodesManager -> _uiManager -> RCTUIManager -> _viewRegistry -> __NSDictionaryM -> RCTScrollView ``` First fix: Use weak map for parent and child nodes, strong refs are managed by RCTNativeAnimatedNodesManager Second fix: Make RCTEventDispatcher observers a weak array and make sure we don't keep strong refs to UIManager in RCTNativeAnimatedNodesManager and RCTPropsAnimatedNode. Tested that native animations still work in UIExplorer [IOS] [BUGFIX] [NativeAnimated] - Fix potential retain cycles in Animated iOS Closes https://github.com/facebook/react-native/pull/16506 Differential Revision: D6126400 Pulled By: shergin fbshipit-source-id: 1ac5083f8ab79a806305edc23ae4796ed428f78b
2017-10-23 20:16:24 +00:00
@property (nonatomic, copy, readonly) NSMapTable<NSNumber *, RCTAnimatedNode *> *childNodes;
@property (nonatomic, copy, readonly) NSMapTable<NSNumber *, RCTAnimatedNode *> *parentNodes;
Add support for native animations on iOS Summary: Currently on iOS animations are being performed on the JS thread. This ports animations over to the native thread and performs them natively. A lot of this work has already been done on Android, but this PR enables a few animation nodes that Android doesn't yet support such as Transform, Multiplication, and Addition nodes. Also there is a demo of the native animations added to the UIExplorer app. Closes https://github.com/facebook/react-native/pull/7884 Reviewed By: javache Differential Revision: D3409179 Pulled By: nicklockwood fbshipit-source-id: ef2d8840032e0c32f49e4a16ba86d448662e1751
2016-06-09 17:34:41 +00:00
@property (nonatomic, readonly) BOOL needsUpdate;
/**
* Marks a node and its children as needing update.
*/
- (void)setNeedsUpdate NS_REQUIRES_SUPER;
/**
* The node will update its value if necesarry and only after its parents have updated.
*/
- (void)updateNodeIfNecessary NS_REQUIRES_SUPER;
/**
* Where the actual update code lives. Called internally from updateNodeIfNecessary
*/
- (void)performUpdate NS_REQUIRES_SUPER;
- (void)addChild:(RCTAnimatedNode *)child NS_REQUIRES_SUPER;
- (void)removeChild:(RCTAnimatedNode *)child NS_REQUIRES_SUPER;
- (void)onAttachedToNode:(RCTAnimatedNode *)parent NS_REQUIRES_SUPER;
- (void)onDetachedFromNode:(RCTAnimatedNode *)parent NS_REQUIRES_SUPER;
- (void)detachNode NS_REQUIRES_SUPER;
@end