element-plus/es/components/virtual-list/src/hooks/use-grid-wheel.mjs.map

A Component Library for Vue 3

{"version":3,"file":"use-grid-wheel.mjs","sources":["../../../../../../../packages/components/virtual-list/src/hooks/use-grid-wheel.ts"],"sourcesContent":["import { cAF, rAF } from '@element-plus/utils'\n\nimport type { ComputedRef } from 'vue'\n\ninterface GridWheelState {\n  atXStartEdge: ComputedRef<boolean>\n  atXEndEdge: ComputedRef<boolean>\n  atYStartEdge: ComputedRef<boolean>\n  atYEndEdge: ComputedRef<boolean>\n}\n\ntype GridWheelHandler = (x: number, y: number) => void\n\nexport const useGridWheel = (\n  { atXEndEdge, atXStartEdge, atYEndEdge, atYStartEdge }: GridWheelState,\n  onWheelDelta: GridWheelHandler\n) => {\n  let frameHandle: number | null = null\n  let xOffset = 0\n  let yOffset = 0\n\n  const hasReachedEdge = (x: number, y: number) => {\n    const xEdgeReached =\n      (x < 0 && atXStartEdge.value) || (x > 0 && atXEndEdge.value)\n    const yEdgeReached =\n      (y < 0 && atYStartEdge.value) || (y > 0 && atYEndEdge.value)\n    return xEdgeReached || yEdgeReached\n  }\n\n  const onWheel = (e: WheelEvent) => {\n    cAF(frameHandle!)\n\n    let x = e.deltaX\n    let y = e.deltaY\n    // Simulate native behavior when using touch pad/track pad for wheeling.\n    if (Math.abs(x) > Math.abs(y)) {\n      y = 0\n    } else {\n      x = 0\n    }\n\n    // Special case for windows machine with shift key + wheel scrolling\n    if (e.shiftKey && y !== 0) {\n      x = y\n      y = 0\n    }\n\n    if (hasReachedEdge(x, y)) return\n\n    xOffset += x\n    yOffset += y\n\n    e.preventDefault()\n\n    frameHandle = rAF(() => {\n      onWheelDelta(xOffset, yOffset)\n      xOffset = 0\n      yOffset = 0\n    })\n  }\n\n  return {\n    hasReachedEdge,\n    onWheel,\n  }\n}\n"],"names":[],"mappings":";;AAaO,MAAM,YAAA,GAAe,CAC1B,EAAE,UAAA,EAAY,cAAc,UAAA,EAAY,YAAA,IACxC,YAAA,KACG;AACH,EAAA,IAAI,WAAA,GAA6B,IAAA;AACjC,EAAA,IAAI,OAAA,GAAU,CAAA;AACd,EAAA,IAAI,OAAA,GAAU,CAAA;AAEd,EAAA,MAAM,cAAA,GAAiB,CAAC,CAAA,EAAW,CAAA,KAAc;AAC/C,IAAA,MAAM,eACH,CAAA,GAAI,CAAA,IAAK,aAAa,KAAA,IAAW,CAAA,GAAI,KAAK,UAAA,CAAW,KAAA;AACxD,IAAA,MAAM,eACH,CAAA,GAAI,CAAA,IAAK,aAAa,KAAA,IAAW,CAAA,GAAI,KAAK,UAAA,CAAW,KAAA;AACxD,IAAA,OAAO,YAAA,IAAgB,YAAA;AAAA,EACzB,CAAA;AAEA,EAAA,MAAM,OAAA,GAAU,CAAC,CAAA,KAAkB;AACjC,IAAA,GAAA,CAAI,WAAY,CAAA;AAEhB,IAAA,IAAI,IAAI,CAAA,CAAE,MAAA;AACV,IAAA,IAAI,IAAI,CAAA,CAAE,MAAA;AAEV,IAAA,IAAI,KAAK,GAAA,CAAI,CAAC,IAAI,IAAA,CAAK,GAAA,CAAI,CAAC,CAAA,EAAG;AAC7B,MAAA,CAAA,GAAI,CAAA;AAAA,IACN,CAAA,MAAO;AACL,MAAA,CAAA,GAAI,CAAA;AAAA,IACN;AAGA,IAAA,IAAI,CAAA,CAAE,QAAA,IAAY,CAAA,KAAM,CAAA,EAAG;AACzB,MAAA,CAAA,GAAI,CAAA;AACJ,MAAA,CAAA,GAAI,CAAA;AAAA,IACN;AAEA,IAAA,IAAI,cAAA,CAAe,CAAA,EAAG,CAAC,CAAA,EAAG;AAE1B,IAAA,OAAA,IAAW,CAAA;AACX,IAAA,OAAA,IAAW,CAAA;AAEX,IAAA,CAAA,CAAE,cAAA,EAAe;AAEjB,IAAA,WAAA,GAAc,IAAI,MAAM;AACtB,MAAA,YAAA,CAAa,SAAS,OAAO,CAAA;AAC7B,MAAA,OAAA,GAAU,CAAA;AACV,MAAA,OAAA,GAAU,CAAA;AAAA,IACZ,CAAC,CAAA;AAAA,EACH,CAAA;AAEA,EAAA,OAAO;AAAA,IACL,cAAA;AAAA,IACA;AAAA,GACF;AACF;;;;"}