rudeshark.net/packages/client/src/components/MkMiniChart.vue
2023-04-07 17:01:42 -07:00

75 lines
1.9 KiB
Vue

<template>
<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>
</template>
<script lang="ts" setup>
import { onUnmounted, watch } from "vue";
import { v4 as uuid } from "uuid";
import tinycolor from "tinycolor2";
import { useInterval } from "@/scripts/use-interval";
const props = defineProps<{
src: number[];
}>();
const viewBoxX = 50;
const viewBoxY = 50;
const gradientId = uuid();
let polylinePoints = $ref("");
let polygonPoints = $ref("");
let headX = $ref<number | null>(null);
let headY = $ref<number | null>(null);
let clock = $ref<number | null>(null);
const accent = tinycolor(
getComputedStyle(document.documentElement).getPropertyValue("--accent")
);
const color = accent.toRgbString();
function draw(): void {
const stats = props.src.slice().reverse();
const peak = Math.max.apply(null, stats) || 1;
const _polylinePoints = stats.map((n, i) => [
i * (viewBoxX / (stats.length - 1)),
(1 - n / peak) * viewBoxY,
]);
polylinePoints = _polylinePoints.map((xy) => `${xy[0]},${xy[1]}`).join(" ");
polygonPoints = `0,${viewBoxY} ${polylinePoints} ${viewBoxX},${viewBoxY}`;
headX = _polylinePoints[_polylinePoints.length - 1][0];
headY = _polylinePoints[_polylinePoints.length - 1][1];
}
watch(() => props.src, draw, { immediate: true });
// 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,
});
</script>