lcoco/uni_modules/zebra-swiper/libs/events/onTouchMove.js

import {
	now
} from '../../shared/utils.js';
export default function onTouchMove(event) {
	const swiper = this;
	const data = swiper.touchEventsData;
	const {
		params,
		touches,
		rtlTranslate: rtl,
		enabled
	} = swiper;
	if (!enabled) return;
	let e = event;
	if (e.originalEvent) e = e.originalEvent;

	if (!data.isTouched) {
		if (data.startMoving && data.isScrolling) {
			swiper.emit('touchMoveOpposite', e);
		}

		return;
	}

	if (data.isTouchEvent && e.type !== 'touchmove' && e.type !== 'touchMove' && e.type !== 'onTouchmove') return;
	const targetTouch = (e.type === 'touchmove' || e.type === 'touchMove' || e.type === 'onTouchmove') && e.touches && (
		e.touches[0] || e
		.changedTouches[0]);
	const pageX = (e.type === 'touchmove' || e.type === 'touchMove' || e.type === 'onTouchmove') ? targetTouch.pageX : e
		.pageX;
	const pageY = (e.type === 'touchmove' || e.type === 'touchMove' || e.type === 'onTouchmove') ? targetTouch.pageY : e
		.pageY;

	if (e.preventedByNestedSwiper) {
		touches.startX = pageX;
		touches.startY = pageY;
		return;
	}

	if (!swiper.allowTouchMove) {
		swiper.allowClick = false;

		if (data.isTouched) {
			Object.assign(touches, {
				startX: pageX,
				startY: pageY,
				currentX: pageX,
				currentY: pageY
			});
			data.touchStartTime = now();
		}

		return;
	}

	if (data.isTouchEvent && params.touchReleaseOnEdges && !params.loop) {
		if (swiper.isVertical()) {
			if (pageY < touches.startY && swiper.translate <= swiper.maxTranslate() || pageY > touches.startY && swiper
				.translate >= swiper.minTranslate()) {
				data.isTouched = false;
				data.isMoved = false;
				return;
			}
		} else if (pageX < touches.startX && swiper.translate <= swiper.maxTranslate() || pageX > touches.startX &&
			swiper.translate >= swiper.minTranslate()) {
			return;
		}
	}

	// if (data.isTouchEvent && document.activeElement) {
	//   if (e.target === document.activeElement && $(e.target).is(data.focusableElements)) {
	//     data.isMoved = true;
	//     swiper.allowClick = false;
	//     return;
	//   }
	// }

	if (data.allowTouchCallbacks) {
		swiper.emit('touch-move', e);
	}

	if (e.touches && e.touches.length > 1) return;
	touches.currentX = pageX;
	touches.currentY = pageY;
	const diffX = touches.currentX - touches.startX;
	const diffY = touches.currentY - touches.startY;
	if (swiper.params.threshold && Math.sqrt(diffX ** 2 + diffY ** 2) < swiper.params.threshold) return;

	if (typeof data.isScrolling === 'undefined') {
		let touchAngle;

		if (swiper.isHorizontal() && touches.currentY === touches.startY || swiper.isVertical() && touches.currentX ===
			touches.startX) {
			data.isScrolling = false;
		} else {
			if (diffX * diffX + diffY * diffY >= 25) {
				touchAngle = Math.atan2(Math.abs(diffY), Math.abs(diffX)) * 180 / Math.PI;
				data.isScrolling = swiper.isHorizontal() ? touchAngle > params.touchAngle : 90 - touchAngle > params
					.touchAngle;
			}
		}
	}

	if (data.isScrolling) {
		swiper.emit('touchMoveOpposite', e);
	}

	if (typeof data.startMoving === 'undefined') {
		if (touches.currentX !== touches.startX || touches.currentY !== touches.startY) {
			data.startMoving = true;
		}
	}

	if (data.isScrolling) {
		data.isTouched = false;
		return;
	}

	if (!data.startMoving) {
		return;
	}

	swiper.allowClick = false;

	if (!params.cssMode && e.cancelable) {
		e.preventDefault();
	}

	if (params.touchMoveStopPropagation && !params.nested) {
		e.stopPropagation();
	}

	if (!data.isMoved) {
		if (params.loop && !params.cssMode) {
			swiper.loopFix();
		}

		data.startTranslate = swiper.getTranslate();
		swiper.setTransition(0);

		if (swiper.animating) {
			swiper.$wrapperEl.emit('transitionend', [swiper]);
		}

		data.allowMomentumBounce = false;

		if (params.grabCursor && (swiper.allowSlideNext === true || swiper.allowSlidePrev === true)) {
			swiper.setGrabCursor(true);
		}

		swiper.emit('sliderFirstMove', e);
	}

	swiper.emit('sliderMove', e);
	data.isMoved = true;
	let diff = swiper.isHorizontal() ? diffX : diffY;
	touches.diff = diff;
	diff *= params.touchRatio;
	if (rtl) diff = -diff;
	swiper.swipeDirection = diff > 0 ? 'prev' : 'next';
	data.currentTranslate = diff + data.startTranslate;
	let disableParentSwiper = true;
	let resistanceRatio = params.resistanceRatio;

	if (params.touchReleaseOnEdges) {
		resistanceRatio = 0;
	}

	if (diff > 0 && data.currentTranslate > swiper.minTranslate()) {
		disableParentSwiper = false;
		if (params.resistance) data.currentTranslate = swiper.minTranslate() - 1 + (-swiper.minTranslate() + data
			.startTranslate + diff) ** resistanceRatio;
	} else if (diff < 0 && data.currentTranslate < swiper.maxTranslate()) {
		disableParentSwiper = false;
		if (params.resistance) data.currentTranslate = swiper.maxTranslate() + 1 - (swiper.maxTranslate() - data
			.startTranslate - diff) ** resistanceRatio;
	}

	if (disableParentSwiper) {
		e.preventedByNestedSwiper = true;
	}


	if (!swiper.allowSlideNext && swiper.swipeDirection === 'next' && data.currentTranslate < data.startTranslate) {
		data.currentTranslate = data.startTranslate;
	}

	if (!swiper.allowSlidePrev && swiper.swipeDirection === 'prev' && data.currentTranslate > data.startTranslate) {
		data.currentTranslate = data.startTranslate;
	}

	if (!swiper.allowSlidePrev && !swiper.allowSlideNext) {
		data.currentTranslate = data.startTranslate;
	}


	if (params.threshold > 0) {
		if (Math.abs(diff) > params.threshold || data.allowThresholdMove) {
			if (!data.allowThresholdMove) {
				data.allowThresholdMove = true;
				touches.startX = touches.currentX;
				touches.startY = touches.currentY;
				data.currentTranslate = data.startTranslate;
				touches.diff = swiper.isHorizontal() ? touches.currentX - touches.startX : touches.currentY - touches
					.startY;
				return;
			}
		} else {
			data.currentTranslate = data.startTranslate;
			return;
		}
	}

	if (!params.followFinger || params.cssMode) return;

	if (params.freeMode && params.freeMode.enabled && swiper.freeMode || params.watchSlidesProgress) {
		swiper.updateActiveIndex();
		swiper.updateSlidesClasses();
	}

	if (swiper.params.freeMode && params.freeMode.enabled && swiper.freeMode) {
		swiper.freeMode.onTouchMove();
	}

	swiper.updateProgress(data.currentTranslate);

	swiper.setTranslate(data.currentTranslate);
}