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<script setup lang="ts">
import { t } from '@/i18n'
import { useGlobalStore } from '@/store/useGlobalStore'
import NumInput from '@/components/numInput.vue'
import sampleImg from './sample.webp'
import { ref } from 'vue'
import { watch } from 'vue'
import { debounce } from 'lodash-es'
function reduceImageResolution (imagePath: string, scaleFactor: number) {
return new Promise<string>(resolve => {
const img = new Image()
img.onload = () => {
const canvas = document.createElement('canvas')
canvas.width = img.width * scaleFactor
canvas.height = img.height * scaleFactor
const ctx = canvas.getContext('2d')
ctx!.drawImage(img, 0, 0, canvas.width, canvas.height)
resolve(canvas.toDataURL())
}
img.src = imagePath
})
}
const g = useGlobalStore()
const thuImg = ref('')
watch(() => [g.enableThumbnail, g.gridThumbnailResolution], debounce(async () => {
if (g.enableThumbnail) {
thuImg.value = await reduceImageResolution(sampleImg, g.gridThumbnailResolution / 1024)
}
}, 300), { immediate: true, deep: true })
</script>
<template>
<a-form-item :label="t('defaultGridCellWidth')">
<NumInput :min="64" :max="1024" :step="32" v-model="g.defaultGridCellWidth" />
</a-form-item>
<a-form-item :label="t('useThumbnailPreview')">
<a-switch v-model:checked="g.enableThumbnail" />
</a-form-item>
<a-form-item :label="t('thumbnailResolution')" v-if="g.enableThumbnail">
<NumInput v-model="g.gridThumbnailResolution" :min="256" :max="1024" :step="64" />
</a-form-item>
<a-form-item :label="t('livePreview')">
<div>
<img :width="g.defaultGridCellWidth" :height="g.defaultGridCellWidth" :src="g.enableThumbnail ? thuImg : sampleImg">
</div>
</a-form-item>
</template>
<style lang="scss" scoped></style>
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