@daysnap/utils/lib/chunk-QANO5L4T.cjs

通用的工具库

"use strict";Object.defineProperty(exports, "__esModule", {value: true}); function _nullishCoalesce(lhs, rhsFn) { if (lhs != null) { return lhs; } else { return rhsFn(); } }// src/createSwipeHandlers.ts
function getPoint(event) {
  if ("touches" in event) {
    const touch = event.touches[0] || event.changedTouches[0];
    return touch ? [touch.pageX, touch.pageY] : null;
  }
  return [event.pageX, event.pageY];
}
function getDirection(dx, dy) {
  const absX = Math.abs(dx);
  const absY = Math.abs(dy);
  if (absX === 0 && absY === 0) {
    return "none";
  }
  if (absX >= absY) {
    return dx >= 0 ? "right" : "left";
  }
  return dy >= 0 ? "down" : "up";
}
function createSwipeHandlers(listener, options = {}) {
  const threshold = Math.max(_nullishCoalesce(options.threshold, () => ( 0)), 0);
  let startPoint = null;
  let endPoint = null;
  const handleCancel = () => {
    startPoint = null;
    endPoint = null;
  };
  const handleStart = (event) => {
    const point = getPoint(event);
    if (!point) {
      return;
    }
    startPoint = point;
    endPoint = point;
  };
  const handleMove = (event) => {
    if (!startPoint) {
      return;
    }
    const point = getPoint(event);
    if (!point) {
      return;
    }
    endPoint = point;
  };
  const handleEnd = (event) => {
    if (!startPoint || !endPoint) {
      return;
    }
    if (event) {
      endPoint = getPoint(event) || endPoint;
    }
    const [sx, sy] = startPoint;
    const [ex, ey] = endPoint;
    const dx = ex - sx;
    const dy = ey - sy;
    const absX = Math.abs(dx);
    const absY = Math.abs(dy);
    handleCancel();
    if (Math.max(absX, absY) < threshold) {
      return;
    }
    listener({
      sx,
      sy,
      ex,
      ey,
      dx,
      dy,
      absX,
      absY,
      direction: getDirection(dx, dy)
    });
  };
  return {
    handleStart,
    handleMove,
    handleEnd,
    handleCancel
  };
}
var createSwipeHandler = createSwipeHandlers;




exports.createSwipeHandlers = createSwipeHandlers; exports.createSwipeHandler = createSwipeHandler;