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node_modules/vant/lib/composables/use-touch.js

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+var __defProp = Object.defineProperty;
+var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
+var __getOwnPropNames = Object.getOwnPropertyNames;
+var __hasOwnProp = Object.prototype.hasOwnProperty;
+var __export = (target, all) => {
+  for (var name in all)
+    __defProp(target, name, { get: all[name], enumerable: true });
+};
+var __copyProps = (to, from, except, desc) => {
+  if (from && typeof from === "object" || typeof from === "function") {
+    for (let key of __getOwnPropNames(from))
+      if (!__hasOwnProp.call(to, key) && key !== except)
+        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
+  }
+  return to;
+};
+var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
+var stdin_exports = {};
+__export(stdin_exports, {
+  useTouch: () => useTouch
+});
+module.exports = __toCommonJS(stdin_exports);
+var import_vue = require("vue");
+var import_utils = require("../utils");
+function getDirection(x, y) {
+  if (x > y) {
+    return "horizontal";
+  }
+  if (y > x) {
+    return "vertical";
+  }
+  return "";
+}
+function useTouch() {
+  const startX = (0, import_vue.ref)(0);
+  const startY = (0, import_vue.ref)(0);
+  const deltaX = (0, import_vue.ref)(0);
+  const deltaY = (0, import_vue.ref)(0);
+  const offsetX = (0, import_vue.ref)(0);
+  const offsetY = (0, import_vue.ref)(0);
+  const direction = (0, import_vue.ref)("");
+  const isTap = (0, import_vue.ref)(true);
+  const isVertical = () => direction.value === "vertical";
+  const isHorizontal = () => direction.value === "horizontal";
+  const reset = () => {
+    deltaX.value = 0;
+    deltaY.value = 0;
+    offsetX.value = 0;
+    offsetY.value = 0;
+    direction.value = "";
+    isTap.value = true;
+  };
+  const start = (event) => {
+    reset();
+    startX.value = event.touches[0].clientX;
+    startY.value = event.touches[0].clientY;
+  };
+  const move = (event) => {
+    const touch = event.touches[0];
+    deltaX.value = (touch.clientX < 0 ? 0 : touch.clientX) - startX.value;
+    deltaY.value = touch.clientY - startY.value;
+    offsetX.value = Math.abs(deltaX.value);
+    offsetY.value = Math.abs(deltaY.value);
+    const LOCK_DIRECTION_DISTANCE = 10;
+    if (!direction.value || offsetX.value < LOCK_DIRECTION_DISTANCE && offsetY.value < LOCK_DIRECTION_DISTANCE) {
+      direction.value = getDirection(offsetX.value, offsetY.value);
+    }
+    if (isTap.value && (offsetX.value > import_utils.TAP_OFFSET || offsetY.value > import_utils.TAP_OFFSET)) {
+      isTap.value = false;
+    }
+  };
+  return {
+    move,
+    start,
+    reset,
+    startX,
+    startY,
+    deltaX,
+    deltaY,
+    offsetX,
+    offsetY,
+    direction,
+    isVertical,
+    isHorizontal,
+    isTap
+  };
+}