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6535858c71
Summary: `flattenOffset` has proven extremely useful, especially when dealing with pan responders and other gesture based animations, but I've also found a number of use cases for the inverse. This diff introduces `extractOffset`, which sets the offset value to the base value, and resets the base value to zero. A common use case would be to extractOffset onGrant and flattenOffset onRelease. Closes https://github.com/facebook/react-native/pull/10721 Differential Revision: D4145744 fbshipit-source-id: dc2aa31652df0b31450556f611db43548180c7dd
59 lines
1.1 KiB
Objective-C
59 lines
1.1 KiB
Objective-C
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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#import "RCTValueAnimatedNode.h"
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@interface RCTValueAnimatedNode ()
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@property (nonatomic, assign) CGFloat offset;
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@end
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@implementation RCTValueAnimatedNode
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@synthesize value = _value;
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- (instancetype)initWithTag:(NSNumber *)tag
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config:(NSDictionary<NSString *, id> *)config
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{
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if (self = [super initWithTag:tag config:config]) {
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_offset = [self.config[@"offset"] floatValue];
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_value = [self.config[@"value"] floatValue];
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}
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return self;
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}
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- (void)flattenOffset
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{
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_value += _offset;
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_offset = 0;
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}
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- (void)extractOffset
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{
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_offset += _value;
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_value = 0;
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}
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- (CGFloat)value
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{
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return _value + _offset;
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}
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- (void)setValue:(CGFloat)value
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{
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_value = value;
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if (_valueObserver) {
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[_valueObserver animatedNode:self didUpdateValue:_value];
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}
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}
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@end
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