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packages/histoire/src/client/app/components/story/StoryVariantGrid.vue
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,103 @@ | ||
| <script lang="ts" setup> | ||
| import { useResizeObserver } from '@vueuse/core' | ||
| import { computed, ref } from 'vue' | ||
| import { useStoryStore } from '../../stores/story' | ||
| import StoryVariantGridItem from './StoryVariantGridItem.vue' | ||
| const storyStore = useStoryStore() | ||
| const templateWidth = computed(() => { | ||
| if (storyStore.currentStory.layout.type !== 'grid') { | ||
| return | ||
| } | ||
| const layoutWidth = storyStore.currentStory.layout.width | ||
| if (!layoutWidth) { | ||
| return '200px' | ||
| } | ||
| if (typeof layoutWidth === 'number') { | ||
| return layoutWidth + 'px' | ||
| } | ||
| return layoutWidth | ||
| }) | ||
| const margin = 16 | ||
| const gap = 16 | ||
| const itemWidth = ref(16) | ||
| const maxItemHeight = ref(0) | ||
| const maxCount = ref(10) | ||
| const countPerRow = ref(0) | ||
| const visibleRows = ref(0) | ||
| const el = ref<HTMLDivElement>(null) | ||
| const children = ref([]) | ||
| useResizeObserver(el, () => { | ||
| updateMaxCount() | ||
| }) | ||
| function updateMaxCount () { | ||
| if (!maxItemHeight.value) return | ||
| const width = el.value!.clientWidth - margin * 2 | ||
| const height = el.value!.clientHeight | ||
| const scrollTop = el.value!.scrollTop | ||
| // width = (countPerRow - 1) * gap + countPerRow * itemWidth.value | ||
| // W = (C - 1) * G + C * I | ||
| // W = C * G - G + C * I | ||
| // W + G = C * G + C * I | ||
| // W + G = C * (G + I) | ||
| // (W + G) / (G + I) = C | ||
| countPerRow.value = Math.floor((width + gap) / (itemWidth.value + gap)) | ||
| visibleRows.value = Math.ceil((height + scrollTop + gap) / (maxItemHeight.value + gap)) | ||
| const newMaxCount = countPerRow.value * visibleRows.value | ||
| if (maxCount.value < newMaxCount) { | ||
| maxCount.value = newMaxCount | ||
| } | ||
| console.log(countPerRow.value, visibleRows.value, maxCount.value) | ||
| } | ||
| function onItemResize (w: number, h: number) { | ||
| itemWidth.value = w | ||
| if (maxItemHeight.value < h) { | ||
| maxItemHeight.value = h | ||
| updateMaxCount() | ||
| } | ||
| } | ||
| </script> | ||
|
|
||
| <template> | ||
| <div | ||
| ref="el" | ||
| class="htw-h-full htw-overflow-y-auto" | ||
| @scroll="updateMaxCount()" | ||
| > | ||
| <div | ||
| :style="{ | ||
| minHeight: `${(storyStore.currentStory.variants.length / countPerRow) * (maxItemHeight + gap) - gap}px`, | ||
| }" | ||
| > | ||
| <div | ||
| class="htw-grid htw-gap-4 htw-m-4" | ||
| :style="{ | ||
| gridTemplateColumns: `repeat(auto-fill, ${templateWidth})`, | ||
| }" | ||
| > | ||
| <StoryVariantGridItem | ||
| v-for="(variant, index) of storyStore.currentStory.variants.slice(0, maxCount)" | ||
| :key="index" | ||
| :variant="variant" | ||
| :story="storyStore.currentStory" | ||
| @resize="onItemResize" | ||
| /> | ||
| </div> | ||
| </div> | ||
| </div> | ||
| </template> |
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