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diff --git a/packages/frontend/src/components/MkChart.vue b/packages/frontend/src/components/MkChart.vue
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+++ b/packages/frontend/src/components/MkChart.vue
@@ -0,0 +1,859 @@
+<template>
+<div class="cbbedffa">
+ <canvas ref="chartEl"></canvas>
+ <div v-if="fetching" class="fetching">
+ <MkLoading/>
+ </div>
+</div>
+</template>
+
+<script lang="ts" setup>
+/* eslint-disable id-denylist --
+ Chart.js has a `data` attribute in most chart definitions, which triggers the
+ id-denylist violation when setting it. This is causing about 60+ lint issues.
+ As this is part of Chart.js's API it makes sense to disable the check here.
+*/
+import { onMounted, ref, watch, PropType, onUnmounted } from 'vue';
+import {
+ Chart,
+ ArcElement,
+ LineElement,
+ BarElement,
+ PointElement,
+ BarController,
+ LineController,
+ CategoryScale,
+ LinearScale,
+ TimeScale,
+ Legend,
+ Title,
+ Tooltip,
+ SubTitle,
+ Filler,
+} from 'chart.js';
+import 'chartjs-adapter-date-fns';
+import { enUS } from 'date-fns/locale';
+import zoomPlugin from 'chartjs-plugin-zoom';
+import gradient from 'chartjs-plugin-gradient';
+import * as os from '@/os';
+import { defaultStore } from '@/store';
+import { useChartTooltip } from '@/scripts/use-chart-tooltip';
+import { chartVLine } from '@/scripts/chart-vline';
+
+const props = defineProps({
+ src: {
+ type: String,
+ required: true,
+ },
+ args: {
+ type: Object,
+ required: false,
+ },
+ limit: {
+ type: Number,
+ required: false,
+ default: 90,
+ },
+ span: {
+ type: String as PropType<'hour' | 'day'>,
+ required: true,
+ },
+ detailed: {
+ type: Boolean,
+ required: false,
+ default: false,
+ },
+ stacked: {
+ type: Boolean,
+ required: false,
+ default: false,
+ },
+ bar: {
+ type: Boolean,
+ required: false,
+ default: false,
+ },
+ aspectRatio: {
+ type: Number,
+ required: false,
+ default: null,
+ },
+});
+
+Chart.register(
+ ArcElement,
+ LineElement,
+ BarElement,
+ PointElement,
+ BarController,
+ LineController,
+ CategoryScale,
+ LinearScale,
+ TimeScale,
+ Legend,
+ Title,
+ Tooltip,
+ SubTitle,
+ Filler,
+ zoomPlugin,
+ gradient,
+);
+
+const sum = (...arr) => arr.reduce((r, a) => r.map((b, i) => a[i] + b));
+const negate = arr => arr.map(x => -x);
+const alpha = (hex, a) => {
+ const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex)!;
+ const r = parseInt(result[1], 16);
+ const g = parseInt(result[2], 16);
+ const b = parseInt(result[3], 16);
+ return `rgba(${r}, ${g}, ${b}, ${a})`;
+};
+
+const colors = {
+ blue: '#008FFB',
+ green: '#00E396',
+ yellow: '#FEB019',
+ red: '#FF4560',
+ purple: '#e300db',
+ orange: '#fe6919',
+ lime: '#bde800',
+ cyan: '#00e0e0',
+};
+const colorSets = [colors.blue, colors.green, colors.yellow, colors.red, colors.purple];
+const getColor = (i) => {
+ return colorSets[i % colorSets.length];
+};
+
+const now = new Date();
+let chartInstance: Chart = null;
+let chartData: {
+ series: {
+ name: string;
+ type: 'line' | 'area';
+ color?: string;
+ dashed?: boolean;
+ hidden?: boolean;
+ data: {
+ x: number;
+ y: number;
+ }[];
+ }[];
+} = null;
+
+const chartEl = ref<HTMLCanvasElement>(null);
+const fetching = ref(true);
+
+const getDate = (ago: number) => {
+ const y = now.getFullYear();
+ const m = now.getMonth();
+ const d = now.getDate();
+ const h = now.getHours();
+
+ return props.span === 'day' ? new Date(y, m, d - ago) : new Date(y, m, d, h - ago);
+};
+
+const format = (arr) => {
+ return arr.map((v, i) => ({
+ x: getDate(i).getTime(),
+ y: v,
+ }));
+};
+
+const { handler: externalTooltipHandler } = useChartTooltip();
+
+const render = () => {
+ if (chartInstance) {
+ chartInstance.destroy();
+ }
+
+ const gridColor = defaultStore.state.darkMode ? 'rgba(255, 255, 255, 0.1)' : 'rgba(0, 0, 0, 0.1)';
+ const vLineColor = defaultStore.state.darkMode ? 'rgba(255, 255, 255, 0.2)' : 'rgba(0, 0, 0, 0.2)';
+
+ // フォントカラー
+ Chart.defaults.color = getComputedStyle(document.documentElement).getPropertyValue('--fg');
+
+ const maxes = chartData.series.map((x, i) => Math.max(...x.data.map(d => d.y)));
+
+ chartInstance = new Chart(chartEl.value, {
+ type: props.bar ? 'bar' : 'line',
+ data: {
+ labels: new Array(props.limit).fill(0).map((_, i) => getDate(i).toLocaleString()).slice().reverse(),
+ datasets: chartData.series.map((x, i) => ({
+ parsing: false,
+ label: x.name,
+ data: x.data.slice().reverse(),
+ tension: 0.3,
+ pointRadius: 0,
+ borderWidth: props.bar ? 0 : 2,
+ borderColor: x.color ? x.color : getColor(i),
+ borderDash: x.dashed ? [5, 5] : [],
+ borderJoinStyle: 'round',
+ borderRadius: props.bar ? 3 : undefined,
+ backgroundColor: props.bar ? (x.color ? x.color : getColor(i)) : alpha(x.color ? x.color : getColor(i), 0.1),
+ gradient: props.bar ? undefined : {
+ backgroundColor: {
+ axis: 'y',
+ colors: {
+ 0: alpha(x.color ? x.color : getColor(i), 0),
+ [maxes[i]]: alpha(x.color ? x.color : getColor(i), 0.35),
+ },
+ },
+ },
+ barPercentage: 0.9,
+ categoryPercentage: 0.9,
+ fill: x.type === 'area',
+ clip: 8,
+ hidden: !!x.hidden,
+ })),
+ },
+ options: {
+ aspectRatio: props.aspectRatio || 2.5,
+ layout: {
+ padding: {
+ left: 0,
+ right: 8,
+ top: 0,
+ bottom: 0,
+ },
+ },
+ scales: {
+ x: {
+ type: 'time',
+ stacked: props.stacked,
+ offset: false,
+ time: {
+ stepSize: 1,
+ unit: props.span === 'day' ? 'month' : 'day',
+ },
+ grid: {
+ color: gridColor,
+ borderColor: 'rgb(0, 0, 0, 0)',
+ },
+ ticks: {
+ display: props.detailed,
+ maxRotation: 0,
+ autoSkipPadding: 16,
+ },
+ adapters: {
+ date: {
+ locale: enUS,
+ },
+ },
+ min: getDate(props.limit).getTime(),
+ },
+ y: {
+ position: 'left',
+ stacked: props.stacked,
+ suggestedMax: 50,
+ grid: {
+ color: gridColor,
+ borderColor: 'rgb(0, 0, 0, 0)',
+ },
+ ticks: {
+ display: props.detailed,
+ //mirror: true,
+ },
+ },
+ },
+ interaction: {
+ intersect: false,
+ mode: 'index',
+ },
+ elements: {
+ point: {
+ hoverRadius: 5,
+ hoverBorderWidth: 2,
+ },
+ },
+ animation: false,
+ plugins: {
+ legend: {
+ display: props.detailed,
+ position: 'bottom',
+ labels: {
+ boxWidth: 16,
+ },
+ },
+ tooltip: {
+ enabled: false,
+ mode: 'index',
+ animation: {
+ duration: 0,
+ },
+ external: externalTooltipHandler,
+ },
+ zoom: props.detailed ? {
+ pan: {
+ enabled: true,
+ },
+ zoom: {
+ wheel: {
+ enabled: true,
+ },
+ pinch: {
+ enabled: true,
+ },
+ drag: {
+ enabled: false,
+ },
+ mode: 'x',
+ },
+ limits: {
+ x: {
+ min: 'original',
+ max: 'original',
+ },
+ y: {
+ min: 'original',
+ max: 'original',
+ },
+ },
+ } : undefined,
+ gradient,
+ },
+ },
+ plugins: [chartVLine(vLineColor)],
+ });
+};
+
+const exportData = () => {
+ // TODO
+};
+
+const fetchFederationChart = async (): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/federation', { limit: props.limit, span: props.span });
+ return {
+ series: [{
+ name: 'Received',
+ type: 'area',
+ data: format(raw.inboxInstances),
+ color: colors.blue,
+ }, {
+ name: 'Delivered',
+ type: 'area',
+ data: format(raw.deliveredInstances),
+ color: colors.green,
+ }, {
+ name: 'Stalled',
+ type: 'area',
+ data: format(raw.stalled),
+ color: colors.red,
+ }, {
+ name: 'Pub Active',
+ type: 'line',
+ data: format(raw.pubActive),
+ color: colors.purple,
+ }, {
+ name: 'Sub Active',
+ type: 'line',
+ data: format(raw.subActive),
+ color: colors.orange,
+ }, {
+ name: 'Pub & Sub',
+ type: 'line',
+ data: format(raw.pubsub),
+ dashed: true,
+ color: colors.cyan,
+ }, {
+ name: 'Pub',
+ type: 'line',
+ data: format(raw.pub),
+ dashed: true,
+ color: colors.purple,
+ }, {
+ name: 'Sub',
+ type: 'line',
+ data: format(raw.sub),
+ dashed: true,
+ color: colors.orange,
+ }],
+ };
+};
+
+const fetchApRequestChart = async (): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/ap-request', { limit: props.limit, span: props.span });
+ return {
+ series: [{
+ name: 'In',
+ type: 'area',
+ color: '#008FFB',
+ data: format(raw.inboxReceived),
+ }, {
+ name: 'Out (succ)',
+ type: 'area',
+ color: '#00E396',
+ data: format(raw.deliverSucceeded),
+ }, {
+ name: 'Out (fail)',
+ type: 'area',
+ color: '#FEB019',
+ data: format(raw.deliverFailed),
+ }],
+ };
+};
+
+const fetchNotesChart = async (type: string): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/notes', { limit: props.limit, span: props.span });
+ return {
+ series: [{
+ name: 'All',
+ type: 'line',
+ data: format(type === 'combined'
+ ? sum(raw.local.inc, negate(raw.local.dec), raw.remote.inc, negate(raw.remote.dec))
+ : sum(raw[type].inc, negate(raw[type].dec)),
+ ),
+ color: '#888888',
+ }, {
+ name: 'Renotes',
+ type: 'area',
+ data: format(type === 'combined'
+ ? sum(raw.local.diffs.renote, raw.remote.diffs.renote)
+ : raw[type].diffs.renote,
+ ),
+ color: colors.green,
+ }, {
+ name: 'Replies',
+ type: 'area',
+ data: format(type === 'combined'
+ ? sum(raw.local.diffs.reply, raw.remote.diffs.reply)
+ : raw[type].diffs.reply,
+ ),
+ color: colors.yellow,
+ }, {
+ name: 'Normal',
+ type: 'area',
+ data: format(type === 'combined'
+ ? sum(raw.local.diffs.normal, raw.remote.diffs.normal)
+ : raw[type].diffs.normal,
+ ),
+ color: colors.blue,
+ }, {
+ name: 'With file',
+ type: 'area',
+ data: format(type === 'combined'
+ ? sum(raw.local.diffs.withFile, raw.remote.diffs.withFile)
+ : raw[type].diffs.withFile,
+ ),
+ color: colors.purple,
+ }],
+ };
+};
+
+const fetchNotesTotalChart = async (): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/notes', { limit: props.limit, span: props.span });
+ return {
+ series: [{
+ name: 'Combined',
+ type: 'line',
+ data: format(sum(raw.local.total, raw.remote.total)),
+ }, {
+ name: 'Local',
+ type: 'area',
+ data: format(raw.local.total),
+ }, {
+ name: 'Remote',
+ type: 'area',
+ data: format(raw.remote.total),
+ }],
+ };
+};
+
+const fetchUsersChart = async (total: boolean): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/users', { limit: props.limit, span: props.span });
+ return {
+ series: [{
+ name: 'Combined',
+ type: 'line',
+ data: format(total
+ ? sum(raw.local.total, raw.remote.total)
+ : sum(raw.local.inc, negate(raw.local.dec), raw.remote.inc, negate(raw.remote.dec)),
+ ),
+ }, {
+ name: 'Local',
+ type: 'area',
+ data: format(total
+ ? raw.local.total
+ : sum(raw.local.inc, negate(raw.local.dec)),
+ ),
+ }, {
+ name: 'Remote',
+ type: 'area',
+ data: format(total
+ ? raw.remote.total
+ : sum(raw.remote.inc, negate(raw.remote.dec)),
+ ),
+ }],
+ };
+};
+
+const fetchActiveUsersChart = async (): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/active-users', { limit: props.limit, span: props.span });
+ return {
+ series: [{
+ name: 'Read & Write',
+ type: 'area',
+ data: format(raw.readWrite),
+ color: colors.orange,
+ }, {
+ name: 'Write',
+ type: 'area',
+ data: format(raw.write),
+ color: colors.lime,
+ }, {
+ name: 'Read',
+ type: 'area',
+ data: format(raw.read),
+ color: colors.blue,
+ }, {
+ name: '< Week',
+ type: 'area',
+ data: format(raw.registeredWithinWeek),
+ color: colors.green,
+ }, {
+ name: '< Month',
+ type: 'area',
+ data: format(raw.registeredWithinMonth),
+ color: colors.yellow,
+ }, {
+ name: '< Year',
+ type: 'area',
+ data: format(raw.registeredWithinYear),
+ color: colors.red,
+ }, {
+ name: '> Week',
+ type: 'area',
+ data: format(raw.registeredOutsideWeek),
+ color: colors.yellow,
+ }, {
+ name: '> Month',
+ type: 'area',
+ data: format(raw.registeredOutsideMonth),
+ color: colors.red,
+ }, {
+ name: '> Year',
+ type: 'area',
+ data: format(raw.registeredOutsideYear),
+ color: colors.purple,
+ }],
+ };
+};
+
+const fetchDriveChart = async (): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/drive', { limit: props.limit, span: props.span });
+ return {
+ bytes: true,
+ series: [{
+ name: 'All',
+ type: 'line',
+ dashed: true,
+ data: format(
+ sum(
+ raw.local.incSize,
+ negate(raw.local.decSize),
+ raw.remote.incSize,
+ negate(raw.remote.decSize),
+ ),
+ ),
+ }, {
+ name: 'Local +',
+ type: 'area',
+ data: format(raw.local.incSize),
+ }, {
+ name: 'Local -',
+ type: 'area',
+ data: format(negate(raw.local.decSize)),
+ }, {
+ name: 'Remote +',
+ type: 'area',
+ data: format(raw.remote.incSize),
+ }, {
+ name: 'Remote -',
+ type: 'area',
+ data: format(negate(raw.remote.decSize)),
+ }],
+ };
+};
+
+const fetchDriveFilesChart = async (): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/drive', { limit: props.limit, span: props.span });
+ return {
+ series: [{
+ name: 'All',
+ type: 'line',
+ dashed: true,
+ data: format(
+ sum(
+ raw.local.incCount,
+ negate(raw.local.decCount),
+ raw.remote.incCount,
+ negate(raw.remote.decCount),
+ ),
+ ),
+ }, {
+ name: 'Local +',
+ type: 'area',
+ data: format(raw.local.incCount),
+ }, {
+ name: 'Local -',
+ type: 'area',
+ data: format(negate(raw.local.decCount)),
+ }, {
+ name: 'Remote +',
+ type: 'area',
+ data: format(raw.remote.incCount),
+ }, {
+ name: 'Remote -',
+ type: 'area',
+ data: format(negate(raw.remote.decCount)),
+ }],
+ };
+};
+
+const fetchInstanceRequestsChart = async (): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
+ return {
+ series: [{
+ name: 'In',
+ type: 'area',
+ color: '#008FFB',
+ data: format(raw.requests.received),
+ }, {
+ name: 'Out (succ)',
+ type: 'area',
+ color: '#00E396',
+ data: format(raw.requests.succeeded),
+ }, {
+ name: 'Out (fail)',
+ type: 'area',
+ color: '#FEB019',
+ data: format(raw.requests.failed),
+ }],
+ };
+};
+
+const fetchInstanceUsersChart = async (total: boolean): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
+ return {
+ series: [{
+ name: 'Users',
+ type: 'area',
+ color: '#008FFB',
+ data: format(total
+ ? raw.users.total
+ : sum(raw.users.inc, negate(raw.users.dec)),
+ ),
+ }],
+ };
+};
+
+const fetchInstanceNotesChart = async (total: boolean): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
+ return {
+ series: [{
+ name: 'Notes',
+ type: 'area',
+ color: '#008FFB',
+ data: format(total
+ ? raw.notes.total
+ : sum(raw.notes.inc, negate(raw.notes.dec)),
+ ),
+ }],
+ };
+};
+
+const fetchInstanceFfChart = async (total: boolean): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
+ return {
+ series: [{
+ name: 'Following',
+ type: 'area',
+ color: '#008FFB',
+ data: format(total
+ ? raw.following.total
+ : sum(raw.following.inc, negate(raw.following.dec)),
+ ),
+ }, {
+ name: 'Followers',
+ type: 'area',
+ color: '#00E396',
+ data: format(total
+ ? raw.followers.total
+ : sum(raw.followers.inc, negate(raw.followers.dec)),
+ ),
+ }],
+ };
+};
+
+const fetchInstanceDriveUsageChart = async (total: boolean): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
+ return {
+ bytes: true,
+ series: [{
+ name: 'Drive usage',
+ type: 'area',
+ color: '#008FFB',
+ data: format(total
+ ? raw.drive.totalUsage
+ : sum(raw.drive.incUsage, negate(raw.drive.decUsage)),
+ ),
+ }],
+ };
+};
+
+const fetchInstanceDriveFilesChart = async (total: boolean): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/instance', { host: props.args.host, limit: props.limit, span: props.span });
+ return {
+ series: [{
+ name: 'Drive files',
+ type: 'area',
+ color: '#008FFB',
+ data: format(total
+ ? raw.drive.totalFiles
+ : sum(raw.drive.incFiles, negate(raw.drive.decFiles)),
+ ),
+ }],
+ };
+};
+
+const fetchPerUserNotesChart = async (): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/user/notes', { userId: props.args.user.id, limit: props.limit, span: props.span });
+ return {
+ series: [...(props.args.withoutAll ? [] : [{
+ name: 'All',
+ type: 'line',
+ data: format(sum(raw.inc, negate(raw.dec))),
+ color: '#888888',
+ }]), {
+ name: 'With file',
+ type: 'area',
+ data: format(raw.diffs.withFile),
+ color: colors.purple,
+ }, {
+ name: 'Renotes',
+ type: 'area',
+ data: format(raw.diffs.renote),
+ color: colors.green,
+ }, {
+ name: 'Replies',
+ type: 'area',
+ data: format(raw.diffs.reply),
+ color: colors.yellow,
+ }, {
+ name: 'Normal',
+ type: 'area',
+ data: format(raw.diffs.normal),
+ color: colors.blue,
+ }],
+ };
+};
+
+const fetchPerUserFollowingChart = async (): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/user/following', { userId: props.args.user.id, limit: props.limit, span: props.span });
+ return {
+ series: [{
+ name: 'Local',
+ type: 'area',
+ data: format(raw.local.followings.total),
+ }, {
+ name: 'Remote',
+ type: 'area',
+ data: format(raw.remote.followings.total),
+ }],
+ };
+};
+
+const fetchPerUserFollowersChart = async (): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/user/following', { userId: props.args.user.id, limit: props.limit, span: props.span });
+ return {
+ series: [{
+ name: 'Local',
+ type: 'area',
+ data: format(raw.local.followers.total),
+ }, {
+ name: 'Remote',
+ type: 'area',
+ data: format(raw.remote.followers.total),
+ }],
+ };
+};
+
+const fetchPerUserDriveChart = async (): Promise<typeof chartData> => {
+ const raw = await os.apiGet('charts/user/drive', { userId: props.args.user.id, limit: props.limit, span: props.span });
+ return {
+ series: [{
+ name: 'Inc',
+ type: 'area',
+ data: format(raw.incSize),
+ }, {
+ name: 'Dec',
+ type: 'area',
+ data: format(raw.decSize),
+ }],
+ };
+};
+
+const fetchAndRender = async () => {
+ const fetchData = () => {
+ switch (props.src) {
+ case 'federation': return fetchFederationChart();
+ case 'ap-request': return fetchApRequestChart();
+ case 'users': return fetchUsersChart(false);
+ case 'users-total': return fetchUsersChart(true);
+ case 'active-users': return fetchActiveUsersChart();
+ case 'notes': return fetchNotesChart('combined');
+ case 'local-notes': return fetchNotesChart('local');
+ case 'remote-notes': return fetchNotesChart('remote');
+ case 'notes-total': return fetchNotesTotalChart();
+ case 'drive': return fetchDriveChart();
+ case 'drive-files': return fetchDriveFilesChart();
+ case 'instance-requests': return fetchInstanceRequestsChart();
+ case 'instance-users': return fetchInstanceUsersChart(false);
+ case 'instance-users-total': return fetchInstanceUsersChart(true);
+ case 'instance-notes': return fetchInstanceNotesChart(false);
+ case 'instance-notes-total': return fetchInstanceNotesChart(true);
+ case 'instance-ff': return fetchInstanceFfChart(false);
+ case 'instance-ff-total': return fetchInstanceFfChart(true);
+ case 'instance-drive-usage': return fetchInstanceDriveUsageChart(false);
+ case 'instance-drive-usage-total': return fetchInstanceDriveUsageChart(true);
+ case 'instance-drive-files': return fetchInstanceDriveFilesChart(false);
+ case 'instance-drive-files-total': return fetchInstanceDriveFilesChart(true);
+
+ case 'per-user-notes': return fetchPerUserNotesChart();
+ case 'per-user-following': return fetchPerUserFollowingChart();
+ case 'per-user-followers': return fetchPerUserFollowersChart();
+ case 'per-user-drive': return fetchPerUserDriveChart();
+ }
+ };
+ fetching.value = true;
+ chartData = await fetchData();
+ fetching.value = false;
+ render();
+};
+
+watch(() => [props.src, props.span], fetchAndRender);
+
+onMounted(() => {
+ fetchAndRender();
+});
+/* eslint-enable id-denylist */
+</script>
+
+<style lang="scss" scoped>
+.cbbedffa {
+ position: relative;
+
+ > .fetching {
+ position: absolute;
+ top: 0;
+ left: 0;
+ width: 100%;
+ height: 100%;
+ -webkit-backdrop-filter: var(--blur, blur(12px));
+ backdrop-filter: var(--blur, blur(12px));
+ display: flex;
+ justify-content: center;
+ align-items: center;
+ cursor: wait;
+ }
+}
+</style>