91 lines
2 KiB
Vue
91 lines
2 KiB
Vue
<template>
|
|
<svg :viewBox="`0 0 ${ viewBoxX } ${ viewBoxY }`" style="overflow:visible">
|
|
<defs>
|
|
<linearGradient :id="gradientId" x1="0" x2="0" y1="1" y2="0">
|
|
<stop offset="0%" stop-color="hsl(200, 80%, 70%)"></stop>
|
|
<stop offset="100%" stop-color="hsl(90, 80%, 70%)"></stop>
|
|
</linearGradient>
|
|
<mask :id="maskId" x="0" y="0" :width="viewBoxX" :height="viewBoxY">
|
|
<polygon
|
|
:points="polygonPoints"
|
|
fill="#fff"
|
|
fill-opacity="0.5"/>
|
|
<polyline
|
|
:points="polylinePoints"
|
|
fill="none"
|
|
stroke="#fff"
|
|
stroke-width="2"/>
|
|
<circle
|
|
:cx="headX"
|
|
:cy="headY"
|
|
r="3"
|
|
fill="#fff"/>
|
|
</mask>
|
|
</defs>
|
|
<rect
|
|
x="-10" y="-10"
|
|
:width="viewBoxX + 20" :height="viewBoxY + 20"
|
|
:style="`stroke: none; fill: url(#${ gradientId }); mask: url(#${ maskId })`"/>
|
|
</svg>
|
|
</template>
|
|
|
|
<script lang="ts">
|
|
import { defineComponent } from 'vue';
|
|
import { v4 as uuid } from 'uuid';
|
|
import * as os from '@/os';
|
|
|
|
export default defineComponent({
|
|
props: {
|
|
src: {
|
|
type: Array,
|
|
required: true
|
|
}
|
|
},
|
|
data() {
|
|
return {
|
|
viewBoxX: 50,
|
|
viewBoxY: 30,
|
|
gradientId: uuid(),
|
|
maskId: uuid(),
|
|
polylinePoints: '',
|
|
polygonPoints: '',
|
|
headX: null,
|
|
headY: null,
|
|
clock: null
|
|
};
|
|
},
|
|
watch: {
|
|
src() {
|
|
this.draw();
|
|
}
|
|
},
|
|
created() {
|
|
this.draw();
|
|
|
|
// Vueが何故かWatchを発動させない場合があるので
|
|
this.clock = window.setInterval(this.draw, 1000);
|
|
},
|
|
beforeUnmount() {
|
|
window.clearInterval(this.clock);
|
|
},
|
|
methods: {
|
|
draw() {
|
|
const stats = this.src.slice().reverse();
|
|
const peak = Math.max.apply(null, stats) || 1;
|
|
|
|
const polylinePoints = stats.map((n, i) => [
|
|
i * (this.viewBoxX / (stats.length - 1)),
|
|
(1 - (n / peak)) * this.viewBoxY
|
|
]);
|
|
|
|
this.polylinePoints = polylinePoints.map(xy => `${xy[0]},${xy[1]}`).join(' ');
|
|
|
|
this.polygonPoints = `0,${ this.viewBoxY } ${ this.polylinePoints } ${ this.viewBoxX },${ this.viewBoxY }`;
|
|
|
|
this.headX = polylinePoints[polylinePoints.length - 1][0];
|
|
this.headY = polylinePoints[polylinePoints.length - 1][1];
|
|
}
|
|
}
|
|
});
|
|
</script>
|