iOS weex click通用点击事件触发位置

weex的通用click事件在WXComponent+Events.m中

在- (void)_addEventOnMainThread:(NSString *)addEventName方法中
WX_ADD_EVENT(click, addClickEvent) 是添加的click方法
方法触法回调

#pragma mark - Click Event

- (void)addClickEvent
{
    if (!_tapGesture) {
        _tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onClick:)];
        _tapGesture.delegate = self;
        _tapGesture.cancelsTouchesInView = _cancelsTouchesInView;
        [self.view addGestureRecognizer:_tapGesture];
    }
}

- (void)onClick:(__unused UITapGestureRecognizer *)recognizer
{
    NSMutableDictionary *position = [[NSMutableDictionary alloc] initWithCapacity:4];
    CGFloat scaleFactor = self.weexInstance.pixelScaleFactor;
    if (![self isViewLoaded]) {
        return;
    }
    if (!CGRectEqualToRect(self.view.frame, CGRectZero)) {
        CGPoint pageLocation = [recognizer locationInView:self.weexInstance.rootView];
        CGRect frame = [self.view.superview convertRect:self.view.frame toView:self.view.window];
        position[@"x"] = @(frame.origin.x/scaleFactor);
        position[@"y"] = @(frame.origin.y/scaleFactor);
        position[@"width"] = @(frame.size.width/scaleFactor);
        position[@"height"] = @(frame.size.height/scaleFactor);
        position[@"pageX"] = @(pageLocation.x/scaleFactor);
        position[@"pageY"] = @(pageLocation.y/scaleFactor);
    }
    [self fireEvent:@"click" params:@{@"position":position}];
}