calckey/packages/client/src/components/MkMiniChart.vue

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<template>
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<svg :viewBox="`0 0 ${viewBoxX} ${viewBoxY}`" style="overflow: visible">
<defs>
<linearGradient :id="gradientId" x1="0" x2="0" y1="1" y2="0">
<stop offset="0%" :stop-color="color" stop-opacity="0"></stop>
<stop
offset="100%"
:stop-color="color"
stop-opacity="0.65"
></stop>
</linearGradient>
</defs>
<polygon
:points="polygonPoints"
:style="`stroke: none; fill: url(#${gradientId});`"
/>
<polyline
:points="polylinePoints"
fill="none"
:stroke="color"
stroke-width="2"
/>
<circle :cx="headX" :cy="headY" r="3" :fill="color" />
</svg>
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</template>
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<script lang="ts" setup>
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import { onUnmounted, watch } from "vue";
import { v4 as uuid } from "uuid";
import tinycolor from "tinycolor2";
import { useInterval } from "@/scripts/use-interval";
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const props = defineProps<{
src: number[];
}>();
const viewBoxX = 50;
const viewBoxY = 50;
const gradientId = uuid();
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let polylinePoints = $ref("");
let polygonPoints = $ref("");
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let headX = $ref<number | null>(null);
let headY = $ref<number | null>(null);
let clock = $ref<number | null>(null);
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const accent = tinycolor(
getComputedStyle(document.documentElement).getPropertyValue("--accent")
);
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const color = accent.toRgbString();
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function draw(): void {
const stats = props.src.slice().reverse();
const peak = Math.max.apply(null, stats) || 1;
const _polylinePoints = stats.map((n, i) => [
i * (viewBoxX / (stats.length - 1)),
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(1 - n / peak) * viewBoxY,
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]);
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polylinePoints = _polylinePoints.map((xy) => `${xy[0]},${xy[1]}`).join(" ");
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polygonPoints = `0,${viewBoxY} ${polylinePoints} ${viewBoxX},${viewBoxY}`;
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headX = _polylinePoints[_polylinePoints.length - 1][0];
headY = _polylinePoints[_polylinePoints.length - 1][1];
}
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watch(() => props.src, draw, { immediate: true });
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// Vueが何故かWatchを発動させない場合があるので
useInterval(draw, 1000, {
immediate: false,
afterMounted: true,
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});
</script>