149 lines
3.7 KiB
Objective-C
149 lines
3.7 KiB
Objective-C
//
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// RNTapHandler.m
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// RNGestureHandler
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//
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// Created by Krzysztof Magiera on 12/10/2017.
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// Copyright © 2017 Software Mansion. All rights reserved.
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//
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#import "RNTapHandler.h"
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#import <UIKit/UIGestureRecognizerSubclass.h>
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#import <React/RCTConvert.h>
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@interface RNBetterTapGestureRecognizer : UIGestureRecognizer
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@property (nonatomic) NSUInteger numberOfTaps;
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@property (nonatomic) NSTimeInterval maxDelay;
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@property (nonatomic) NSTimeInterval maxDuration;
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- (id)initWithGestureHandler:(RNGestureHandler*)gestureHandler;
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@end
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@implementation RNBetterTapGestureRecognizer {
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__weak RNGestureHandler *_gestureHandler;
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NSUInteger _tapsSoFar;
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}
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- (id)initWithGestureHandler:(RNGestureHandler*)gestureHandler
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{
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if ((self = [super initWithTarget:gestureHandler action:@selector(handleGesture:)])) {
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_gestureHandler = gestureHandler;
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_tapsSoFar = 0;
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_numberOfTaps = 1;
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_maxDelay = 0.2;
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_maxDuration = NAN;
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}
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return self;
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}
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- (void)triggerAction
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{
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[_gestureHandler handleGesture:self];
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}
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- (void)cancel
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{
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self.enabled = NO;
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}
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- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
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{
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[super touchesBegan:touches withEvent:event];
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_tapsSoFar++;
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if (_tapsSoFar) {
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[NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(cancel) object:nil];
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}
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if (!isnan(_maxDuration)) {
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[self performSelector:@selector(cancel) withObject:nil afterDelay:_maxDuration];
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}
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self.state = UIGestureRecognizerStatePossible;
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[self triggerAction];
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}
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- (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
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{
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[super touchesMoved:touches withEvent:event];
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if (self.state != UIGestureRecognizerStatePossible) {
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return;
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}
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if (_gestureHandler.shouldCancelWhenOutside) {
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CGPoint pt = [self locationInView:self.view];
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if (!CGRectContainsPoint(self.view.bounds, pt)) {
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self.state = UIGestureRecognizerStateFailed;
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[self triggerAction];
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[self reset];
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return;
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}
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}
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self.state = UIGestureRecognizerStatePossible;
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[self triggerAction];
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}
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- (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
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{
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[super touchesEnded:touches withEvent:event];
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if (_numberOfTaps == _tapsSoFar) {
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self.state = UIGestureRecognizerStateEnded;
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[self reset];
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} else {
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[self performSelector:@selector(cancel) withObject:nil afterDelay:_maxDelay];
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}
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}
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- (void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event
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{
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[super touchesCancelled:touches withEvent:event];
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self.state = UIGestureRecognizerStateCancelled;
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[self reset];
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}
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- (void)reset
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{
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if (self.state == UIGestureRecognizerStateFailed) {
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[self triggerAction];
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}
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[NSObject cancelPreviousPerformRequestsWithTarget:self selector:@selector(cancel) object:nil];
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_tapsSoFar = 0;
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self.enabled = YES;
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[super reset];
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}
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@end
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@implementation RNTapGestureHandler
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- (instancetype)initWithTag:(NSNumber *)tag
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{
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if ((self = [super initWithTag:tag])) {
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_recognizer = [[RNBetterTapGestureRecognizer alloc] initWithGestureHandler:self];
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}
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return self;
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}
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- (void)configure:(NSDictionary *)config
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{
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[super configure:config];
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RNBetterTapGestureRecognizer *recognizer = (RNBetterTapGestureRecognizer *)_recognizer;
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APPLY_INT_PROP(numberOfTaps);
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id prop = config[@"maxDelayMs"];
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if (prop != nil) {
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recognizer.maxDelay = [RCTConvert CGFloat:prop] / 1000.0;
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}
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prop = config[@"maxDurationMs"];
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if (prop != nil) {
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recognizer.maxDuration = [RCTConvert CGFloat:prop] / 1000.0;
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}
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}
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@end
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