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element-plus

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A Component Library for Vue 3

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element-plus/element-plus

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{"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 (\n hasReachedEdge(xOffset, yOffset) &&\n hasReachedEdge(xOffset + x, yOffset + y)\n )\n 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":";;AAaa,MAAA,YAAA,GAAe,CAC1B,EAAE,UAAA,EAAY,cAAc,UAAY,EAAA,YAAA,IACxC,YACG,KAAA;AACH,EAAA,IAAI,WAA6B,GAAA,IAAA,CAAA;AACjC,EAAA,IAAI,OAAU,GAAA,CAAA,CAAA;AACd,EAAA,IAAI,OAAU,GAAA,CAAA,CAAA;AAEd,EAAM,MAAA,cAAA,GAAiB,CAAC,CAAA,EAAW,CAAc,KAAA;AAC/C,IAAA,MAAM,eACH,CAAK,IAAA,CAAA,IAAK,aAAa,KAAW,IAAA,CAAA,IAAK,KAAK,UAAW,CAAA,KAAA,CAAA;AAC1D,IAAA,MAAM,eACH,CAAK,IAAA,CAAA,IAAK,aAAa,KAAW,IAAA,CAAA,IAAK,KAAK,UAAW,CAAA,KAAA,CAAA;AAC1D,IAAA,OAAO,YAAgB,IAAA,YAAA,CAAA;AAAA,GACzB,CAAA;AAEA,EAAM,MAAA,OAAA,GAAU,CAAC,CAAkB,KAAA;AACjC,IAAA,GAAA,CAAI,WAAY,CAAA,CAAA;AAEhB,IAAA,IAAI,IAAI,CAAE,CAAA,MAAA,CAAA;AACV,IAAA,IAAI,IAAI,CAAE,CAAA,MAAA,CAAA;AAEV,IAAA,IAAI,KAAK,GAAI,CAAA,CAAC,IAAI,IAAK,CAAA,GAAA,CAAI,CAAC,CAAG,EAAA;AAC7B,MAAI,CAAA,GAAA,CAAA,CAAA;AAAA,KACC,MAAA;AACL,MAAI,CAAA,GAAA,CAAA,CAAA;AAAA,KACN;AAGA,IAAI,IAAA,CAAA,CAAE,QAAY,IAAA,CAAA,KAAM,CAAG,EAAA;AACzB,MAAI,CAAA,GAAA,CAAA,CAAA;AACJ,MAAI,CAAA,GAAA,CAAA,CAAA;AAAA,KACN;AAEA,IACE,IAAA,cAAA,CAAe,SAAS,OAAO,CAAA,IAC/B,eAAe,OAAU,GAAA,CAAA,EAAG,UAAU,CAAC,CAAA;AAEvC,MAAA,OAAA;AAEF,IAAW,OAAA,IAAA,CAAA,CAAA;AACX,IAAW,OAAA,IAAA,CAAA,CAAA;AAEX,IAAA,CAAA,CAAE,cAAe,EAAA,CAAA;AAEjB,IAAA,WAAA,GAAc,IAAI,MAAM;AACtB,MAAA,YAAA,CAAa,SAAS,OAAO,CAAA,CAAA;AAC7B,MAAU,OAAA,GAAA,CAAA,CAAA;AACV,MAAU,OAAA,GAAA,CAAA,CAAA;AAAA,KACX,CAAA,CAAA;AAAA,GACH,CAAA;AAEA,EAAO,OAAA;AAAA,IACL,cAAA;AAAA,IACA,OAAA;AAAA,GACF,CAAA;AACF;;;;"}