110 lines
3.1 KiB
Objective-C
110 lines
3.1 KiB
Objective-C
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#import "RCTScrollEvent.h"
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#import <React/RCTAssert.h>
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@implementation RCTScrollEvent {
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CGPoint _scrollViewContentOffset;
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UIEdgeInsets _scrollViewContentInset;
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CGSize _scrollViewContentSize;
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CGRect _scrollViewFrame;
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CGFloat _scrollViewZoomScale;
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NSDictionary *_userData;
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uint16_t _coalescingKey;
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}
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@synthesize viewTag = _viewTag;
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@synthesize eventName = _eventName;
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- (instancetype)initWithEventName:(NSString *)eventName
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reactTag:(NSNumber *)reactTag
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scrollViewContentOffset:(CGPoint)scrollViewContentOffset
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scrollViewContentInset:(UIEdgeInsets)scrollViewContentInset
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scrollViewContentSize:(CGSize)scrollViewContentSize
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scrollViewFrame:(CGRect)scrollViewFrame
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scrollViewZoomScale:(CGFloat)scrollViewZoomScale
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userData:(NSDictionary *)userData
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coalescingKey:(uint16_t)coalescingKey
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{
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RCTAssertParam(reactTag);
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if ((self = [super init])) {
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_eventName = [eventName copy];
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_viewTag = reactTag;
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_scrollViewContentOffset = scrollViewContentOffset;
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_scrollViewContentInset = scrollViewContentInset;
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_scrollViewContentSize = scrollViewContentSize;
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_scrollViewFrame = scrollViewFrame;
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_scrollViewZoomScale = scrollViewZoomScale;
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_userData = userData;
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_coalescingKey = coalescingKey;
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}
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return self;
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}
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RCT_NOT_IMPLEMENTED(-(instancetype)init)
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- (uint16_t)coalescingKey
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{
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return _coalescingKey;
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}
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- (NSDictionary *)body
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{
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NSDictionary *body = @{
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@"contentOffset" : @{@"x" : @(_scrollViewContentOffset.x), @"y" : @(_scrollViewContentOffset.y)},
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@"contentInset" : @{
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@"top" : @(_scrollViewContentInset.top),
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@"left" : @(_scrollViewContentInset.left),
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@"bottom" : @(_scrollViewContentInset.bottom),
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@"right" : @(_scrollViewContentInset.right)
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},
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@"contentSize" : @{@"width" : @(_scrollViewContentSize.width), @"height" : @(_scrollViewContentSize.height)},
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@"layoutMeasurement" : @{@"width" : @(_scrollViewFrame.size.width), @"height" : @(_scrollViewFrame.size.height)},
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@"zoomScale" : @(_scrollViewZoomScale ?: 1),
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};
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if (_userData) {
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NSMutableDictionary *mutableBody = [body mutableCopy];
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[mutableBody addEntriesFromDictionary:_userData];
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body = mutableBody;
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}
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return body;
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}
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- (BOOL)canCoalesce
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{
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return YES;
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}
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- (RCTScrollEvent *)coalesceWithEvent:(RCTScrollEvent *)newEvent
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{
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NSArray<NSDictionary *> *updatedChildFrames =
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[_userData[@"updatedChildFrames"] arrayByAddingObjectsFromArray:newEvent->_userData[@"updatedChildFrames"]];
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if (updatedChildFrames) {
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NSMutableDictionary *userData = [newEvent->_userData mutableCopy];
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userData[@"updatedChildFrames"] = updatedChildFrames;
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newEvent->_userData = userData;
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}
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return newEvent;
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}
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+ (NSString *)moduleDotMethod
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{
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return @"RCTEventEmitter.receiveEvent";
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}
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- (NSArray *)arguments
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{
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return @[ self.viewTag, RCTNormalizeInputEventName(self.eventName), [self body] ];
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}
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@end
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