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

95 lines
2.8 KiB
Objective-C

/**
* 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 "RCTTransformAnimatedNode.h"
#import "RCTValueAnimatedNode.h"
@implementation RCTTransformAnimatedNode
{
NSMutableDictionary<NSString *, NSObject *> *_updatedPropsDictionary;
}
- (instancetype)initWithTag:(NSNumber *)tag
config:(NSDictionary<NSString *, id> *)config;
{
if ((self = [super initWithTag:tag config:config])) {
_updatedPropsDictionary = [NSMutableDictionary new];
}
return self;
}
- (NSDictionary *)updatedPropsDictionary
{
return _updatedPropsDictionary;
}
- (void)performUpdate
{
[super performUpdate];
CATransform3D transform = CATransform3DIdentity;
NSArray<NSDictionary *> *transformConfigs = self.config[@"transforms"];
for (NSDictionary *transformConfig in transformConfigs) {
NSString *type = transformConfig[@"type"];
// TODO: Support static transform values.
if (![type isEqualToString: @"animated"]) {
continue;
}
NSNumber *nodeTag = transformConfig[@"nodeTag"];
RCTAnimatedNode *node = self.parentNodes[nodeTag];
if (node.hasUpdated && [node isKindOfClass:[RCTValueAnimatedNode class]]) {
RCTValueAnimatedNode *parentNode = (RCTValueAnimatedNode *)node;
NSString *property = transformConfig[@"property"];
CGFloat value = parentNode.value;
if ([property isEqualToString:@"scale"]) {
transform = CATransform3DScale(transform, value, value, 1);
} else if ([property isEqualToString:@"scaleX"]) {
transform = CATransform3DScale(transform, value, 1, 1);
} else if ([property isEqualToString:@"scaleY"]) {
transform = CATransform3DScale(transform, 1, value, 1);
} else if ([property isEqualToString:@"translateX"]) {
transform = CATransform3DTranslate(transform, value, 0, 0);
} else if ([property isEqualToString:@"translateY"]) {
transform = CATransform3DTranslate(transform, 0, value, 0);
} else if ([property isEqualToString:@"rotate"]) {
transform = CATransform3DRotate(transform, value, 0, 0, 1);
} else if ([property isEqualToString:@"rotateX"]) {
transform = CATransform3DRotate(transform, value, 1, 0, 0);
} else if ([property isEqualToString:@"rotateY"]) {
transform = CATransform3DRotate(transform, value, 0, 1, 0);
} else if ([property isEqualToString:@"perspective"]) {
transform.m34 = 1.0 / -value;
}
}
}
_updatedPropsDictionary[@"transform"] = [NSValue valueWithCATransform3D:transform];
}
- (void)cleanupAnimationUpdate
{
[super cleanupAnimationUpdate];
[_updatedPropsDictionary removeAllObjects];
}
@end