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StoryVariantGrid.vue
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StoryVariantGrid.vue
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<script lang="ts" setup>
import { useResizeObserver } from '@vueuse/core'
import { computed, onMounted, ref, watch } from 'vue'
import { useStoryStore } from '../../stores/story'
import { isMobile } from '../../util/responsive'
import StoryVariantGridItem from './StoryVariantGridItem.vue'
import ToolbarBackground from '../toolbar/ToolbarBackground.vue'
import ToolbarTextDirection from '../toolbar/ToolbarTextDirection.vue'
const storyStore = useStoryStore()
const gridTemplateWidth = 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)
useResizeObserver(el, () => {
updateMaxCount()
updateSize()
})
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
}
if (storyStore.currentVariant) {
const index = storyStore.currentStory.variants.indexOf(storyStore.currentVariant)
if (index + 1 > maxCount.value) {
maxCount.value = index + 1
}
}
}
function onItemResize (w: number, h: number) {
itemWidth.value = w
if (maxItemHeight.value < h) {
maxItemHeight.value = h
updateMaxCount()
}
}
watch(() => storyStore.currentVariant, () => {
maxItemHeight.value = 0 // Reset max height
updateMaxCount()
})
// Grid size
const gridEl = ref<HTMLDivElement>(null)
const gridColumnWidth = ref(1)
const viewWidth = ref(1)
function updateSize () {
if (!el.value) return
viewWidth.value = el.value.clientWidth
if (!gridEl.value) return
if (gridTemplateWidth.value.endsWith('%')) {
gridColumnWidth.value = viewWidth.value * parseInt(gridTemplateWidth.value) / 100 - gap
} else {
gridColumnWidth.value = parseInt(gridTemplateWidth.value)
}
}
onMounted(() => {
updateSize()
})
useResizeObserver(gridEl, () => {
updateSize()
})
const columnCount = computed(() => Math.min(storyStore.currentStory.variants.length, Math.floor((viewWidth.value + gap) / (gridColumnWidth.value + gap))))
</script>
<template>
<div class="histoire-story-variant-grid htw-flex htw-flex-col htw-items-stretch htw-h-full __histoire-pane-shadow-from-right">
<!-- Toolbar -->
<div
v-if="!isMobile"
class="htw-flex-none htw-flex htw-items-center htw-justify-end htw-h-8 htw-mx-2 htw-mt-1"
>
<ToolbarBackground />
<ToolbarTextDirection />
</div>
<div class="htw-overflow-y-auto htw-flex htw-flex-1">
<div
ref="el"
class="htw-flex htw-w-0 htw-flex-1 htw-mx-4"
@scroll="updateMaxCount()"
>
<div
class="htw-m-auto"
:style="{
minHeight: `${(storyStore.currentStory.variants.length / countPerRow) * (maxItemHeight + gap) - gap}px`,
}"
>
<div
ref="gridEl"
class="htw-grid htw-gap-4 htw-my-4"
:style="{
gridTemplateColumns: `repeat(${columnCount}, ${gridColumnWidth}px)`,
}"
>
<StoryVariantGridItem
v-for="(variant, index) of storyStore.currentStory.variants.slice(0, maxCount)"
:key="index"
:variant="variant"
:story="storyStore.currentStory"
@resize="onItemResize"
/>
</div>
</div>
</div>
</div>
</div>
</template>