Sharkey/packages/frontend/src/components/MkActiveUsersHeatmap.vue

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4.8 KiB
Vue
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<template>
<div ref="rootEl">
<MkLoading v-if="fetching"/>
<div v-else>
<canvas ref="chartEl"></canvas>
</div>
</div>
</template>
<script lang="ts" setup>
import { markRaw, version as vueVersion, onMounted, onBeforeUnmount, nextTick } from 'vue';
import {
Chart,
ArcElement,
LineElement,
BarElement,
PointElement,
BarController,
LineController,
CategoryScale,
LinearScale,
TimeScale,
Legend,
Title,
Tooltip,
SubTitle,
Filler,
} from 'chart.js';
import { enUS } from 'date-fns/locale';
import tinycolor from 'tinycolor2';
import * as os from '@/os';
import 'chartjs-adapter-date-fns';
import { defaultStore } from '@/store';
import { useChartTooltip } from '@/scripts/use-chart-tooltip';
import { MatrixController, MatrixElement } from 'chartjs-chart-matrix';
import { chartVLine } from '@/scripts/chart-vline';
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import { alpha } from '@/scripts/color';
Chart.register(
ArcElement,
LineElement,
BarElement,
PointElement,
BarController,
LineController,
CategoryScale,
LinearScale,
TimeScale,
Legend,
Title,
Tooltip,
SubTitle,
Filler,
MatrixController, MatrixElement,
);
const rootEl = $ref<HTMLDivElement>(null);
const chartEl = $ref<HTMLCanvasElement>(null);
const now = new Date();
let chartInstance: Chart = null;
let fetching = $ref(true);
const { handler: externalTooltipHandler } = useChartTooltip({
position: 'middle',
});
async function renderChart() {
if (chartInstance) {
chartInstance.destroy();
}
const wide = rootEl.offsetWidth > 700;
const narrow = rootEl.offsetWidth < 400;
const weeks = wide ? 50 : narrow ? 10 : 25;
const chartLimit = 7 * weeks;
const getDate = (ago: number) => {
const y = now.getFullYear();
const m = now.getMonth();
const d = now.getDate();
return new Date(y, m, d - ago);
};
const format = (arr) => {
return arr.map((v, i) => {
const dt = getDate(i);
const iso = `${dt.getFullYear()}-${(dt.getMonth() + 1).toString().padStart(2, '0')}-${dt.getDate().toString().padStart(2, '0')}`;
return {
x: iso,
y: dt.getDay(),
d: iso,
v,
};
});
};
const raw = await os.api('charts/active-users', { limit: chartLimit, span: 'day' });
fetching = false;
await nextTick();
const gridColor = defaultStore.state.darkMode ? 'rgba(255, 255, 255, 0.1)' : 'rgba(0, 0, 0, 0.1)';
// フォントカラー
Chart.defaults.color = getComputedStyle(document.documentElement).getPropertyValue('--fg');
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const color = defaultStore.state.darkMode ? '#b4e900' : '#86b300';
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// 視覚上の分かりやすさのため上から最も大きい3つの値の平均を最大値とする
const max = raw.readWrite.slice().sort((a, b) => b - a).slice(0, 3).reduce((a, b) => a + b, 0) / 3;
const marginEachCell = 4;
chartInstance = new Chart(chartEl, {
type: 'matrix',
data: {
datasets: [{
label: 'Read & Write',
data: format(raw.readWrite),
pointRadius: 0,
borderWidth: 0,
borderJoinStyle: 'round',
borderRadius: 3,
backgroundColor(c) {
const value = c.dataset.data[c.dataIndex].v;
const a = value / max;
return alpha(color, a);
},
fill: true,
width(c) {
const a = c.chart.chartArea ?? {};
return (a.right - a.left) / weeks - marginEachCell;
},
height(c) {
const a = c.chart.chartArea ?? {};
return (a.bottom - a.top) / 7 - marginEachCell;
},
}],
},
options: {
aspectRatio: wide ? 6 : narrow ? 1.8 : 3.2,
layout: {
padding: {
left: 8,
right: 0,
top: 0,
bottom: 0,
},
},
scales: {
x: {
type: 'time',
offset: true,
position: 'bottom',
time: {
unit: 'week',
round: 'week',
isoWeekday: 0,
displayFormats: {
week: 'MMM dd',
},
},
grid: {
display: false,
color: gridColor,
borderColor: 'rgb(0, 0, 0, 0)',
},
ticks: {
display: true,
maxRotation: 0,
autoSkipPadding: 8,
},
},
y: {
offset: true,
reverse: true,
position: 'right',
grid: {
display: false,
color: gridColor,
borderColor: 'rgb(0, 0, 0, 0)',
},
ticks: {
maxRotation: 0,
autoSkip: true,
padding: 1,
font: {
size: 9,
},
callback: (value, index, values) => ['', 'Mon', '', 'Wed', '', 'Fri', ''][value],
},
},
},
animation: false,
plugins: {
legend: {
display: false,
},
tooltip: {
enabled: false,
callbacks: {
title(context) {
const v = context[0].dataset.data[context[0].dataIndex];
return v.d;
},
label(context) {
const v = context.dataset.data[context.dataIndex];
return ['Active: ' + v.v];
},
},
//mode: 'index',
animation: {
duration: 0,
},
external: externalTooltipHandler,
},
},
},
});
}
onMounted(async () => {
renderChart();
});
</script>