misskey/packages/frontend/src/components/page/page.canvas.vue

<template>
<div class="ysrxegms">
	<canvas ref="canvas" :width="block.width" :height="block.height"/>
</div>
</template>

<script lang="ts">
import { defineComponent, onMounted, PropType, Ref, ref } from 'vue';
import { CanvasBlock } from '@/scripts/hpml/block';
import { Hpml } from '@/scripts/hpml/evaluator';

export default defineComponent({
	props: {
		block: {
			type: Object as PropType<CanvasBlock>,
			required: true,
		},
		hpml: {
			type: Object as PropType<Hpml>,
			required: true,
		},
	},
	setup(props, ctx) {
		const canvas: Ref<any> = ref(null);

		onMounted(() => {
			props.hpml.registerCanvas(props.block.name, canvas.value);
		});

		return {
			canvas,
		};
	},
});
</script>

<style lang="scss" scoped>
.ysrxegms {
	display: inline-block;
	vertical-align: bottom;
	overflow: auto;
	max-width: 100%;

	> canvas {
		display: block;
	}
}
</style>