element-plus/es/components/carousel/src/carousel-item2.mjs.map

A Component Library for Vue 3

{"version":3,"file":"carousel-item2.mjs","sources":["../../../../../../packages/components/carousel/src/carousel-item.vue"],"sourcesContent":["<template>\n  <div\n    v-show=\"ready\"\n    :class=\"[\n      ns.e('item'),\n      ns.is('active', active),\n      ns.is('in-stage', inStage),\n      ns.is('hover', hover),\n      ns.is('animating', animating),\n      { [ns.em('item', 'card')]: isCardType },\n    ]\"\n    :style=\"itemStyle\"\n    @click=\"handleItemClick\"\n  >\n    <div v-if=\"isCardType\" v-show=\"!active\" :class=\"ns.e('mask')\" />\n    <slot />\n  </div>\n</template>\n\n<script lang=\"ts\" setup>\nimport {\n  computed,\n  getCurrentInstance,\n  inject,\n  onMounted,\n  onUnmounted,\n  reactive,\n  ref,\n  unref,\n} from 'vue'\nimport { debugWarn, isUndefined } from '@element-plus/utils'\nimport { useNamespace } from '@element-plus/hooks'\nimport { carouselContextKey } from '@element-plus/tokens'\nimport { carouselItemProps } from './carousel-item'\n\nimport type { CSSProperties } from 'vue'\n\ndefineOptions({\n  name: 'ElCarouselItem',\n})\n\nconst props = defineProps(carouselItemProps)\nconst ns = useNamespace('carousel')\nconst COMPONENT_NAME = 'ElCarouselItem'\n// inject\nconst carouselContext = inject(carouselContextKey)!\n// instance\nconst instance = getCurrentInstance()!\nif (!carouselContext) {\n  debugWarn(\n    COMPONENT_NAME,\n    'usage: <el-carousel></el-carousel-item></el-carousel>'\n  )\n}\n\nif (!instance) {\n  debugWarn(\n    COMPONENT_NAME,\n    'compositional hook can only be invoked inside setups'\n  )\n}\n\nconst CARD_SCALE = 0.83\n\nconst hover = ref(false)\nconst translate = ref(0)\nconst scale = ref(1)\nconst active = ref(false)\nconst ready = ref(false)\nconst inStage = ref(false)\nconst animating = ref(false)\n\n// computed\nconst { isCardType, isVertical } = carouselContext\n\nconst itemStyle = computed<CSSProperties>(() => {\n  const translateType = `translate${unref(isVertical) ? 'Y' : 'X'}`\n  const _translate = `${translateType}(${unref(translate)}px)`\n  const _scale = `scale(${unref(scale)})`\n  const transform = [_translate, _scale].join(' ')\n\n  return {\n    transform,\n  }\n})\n\n// methods\n\nfunction processIndex(index: number, activeIndex: number, length: number) {\n  const lastItemIndex = length - 1\n  const prevItemIndex = activeIndex - 1\n  const nextItemIndex = activeIndex + 1\n  const halfItemIndex = length / 2\n\n  if (activeIndex === 0 && index === lastItemIndex) {\n    return -1\n  } else if (activeIndex === lastItemIndex && index === 0) {\n    return length\n  } else if (index < prevItemIndex && activeIndex - index >= halfItemIndex) {\n    return length + 1\n  } else if (index > nextItemIndex && index - activeIndex >= halfItemIndex) {\n    return -2\n  }\n  return index\n}\n\nfunction calcCardTranslate(index: number, activeIndex: number) {\n  const parentWidth = carouselContext.root.value?.offsetWidth || 0\n  if (inStage.value) {\n    return (parentWidth * ((2 - CARD_SCALE) * (index - activeIndex) + 1)) / 4\n  } else if (index < activeIndex) {\n    return (-(1 + CARD_SCALE) * parentWidth) / 4\n  } else {\n    return ((3 + CARD_SCALE) * parentWidth) / 4\n  }\n}\n\nfunction calcTranslate(\n  index: number,\n  activeIndex: number,\n  isVertical: boolean\n) {\n  const rootEl = carouselContext.root.value\n  if (!rootEl) return 0\n\n  const distance = (isVertical ? rootEl.offsetHeight : rootEl.offsetWidth) || 0\n  return distance * (index - activeIndex)\n}\n\nconst translateItem = (\n  index: number,\n  activeIndex: number,\n  oldIndex?: number\n) => {\n  const _isCardType = unref(isCardType)\n  const carouselItemLength = carouselContext.items.value.length ?? Number.NaN\n\n  const isActive = index === activeIndex\n  if (!_isCardType && !isUndefined(oldIndex)) {\n    animating.value = isActive || index === oldIndex\n  }\n\n  if (!isActive && carouselItemLength > 2 && carouselContext.loop) {\n    index = processIndex(index, activeIndex, carouselItemLength)\n  }\n\n  const _isVertical = unref(isVertical)\n  active.value = isActive\n\n  if (_isCardType) {\n    if (_isVertical) {\n      debugWarn('Carousel', 'vertical direction is not supported for card mode')\n    }\n    inStage.value = Math.round(Math.abs(index - activeIndex)) <= 1\n    translate.value = calcCardTranslate(index, activeIndex)\n    scale.value = unref(active) ? 1 : CARD_SCALE\n  } else {\n    translate.value = calcTranslate(index, activeIndex, _isVertical)\n  }\n\n  ready.value = true\n}\n\nfunction handleItemClick() {\n  if (carouselContext && unref(isCardType)) {\n    const index = carouselContext.items.value.findIndex(\n      ({ uid }) => uid === instance.uid\n    )\n    carouselContext.setActiveItem(index)\n  }\n}\n\n// lifecycle\nonMounted(() => {\n  carouselContext.addItem({\n    props,\n    states: reactive({\n      hover,\n      translate,\n      scale,\n      active,\n      ready,\n      inStage,\n      animating,\n    }),\n    uid: instance.uid,\n    translateItem,\n  })\n})\n\nonUnmounted(() => {\n  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