react-native/Libraries/NativeAnimation/Nodes/RCTValueAnimatedNode.m

59 lines
1.1 KiB
Mathematica
Raw Normal View History

/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#import "RCTValueAnimatedNode.h"
@interface RCTValueAnimatedNode ()
@property (nonatomic, assign) CGFloat offset;
@end
@implementation RCTValueAnimatedNode
@synthesize value = _value;
- (instancetype)initWithTag:(NSNumber *)tag
config:(NSDictionary<NSString *, id> *)config
{
if (self = [super initWithTag:tag config:config]) {
_offset = [self.config[@"offset"] floatValue];
_value = [self.config[@"value"] floatValue];
}
return self;
}
- (void)flattenOffset
{
_value += _offset;
_offset = 0;
}
- (void)extractOffset
{
_offset += _value;
_value = 0;
}
- (CGFloat)value
{
return _value + _offset;
}
- (void)setValue:(CGFloat)value
{
_value = value;
if (_valueObserver) {
[_valueObserver animatedNode:self didUpdateValue:_value];
}
}
@end