remove echarts, use canvas

This commit is contained in:
Vincent van der Wal
2026-07-19 15:25:04 +02:00
parent 6d81af8df5
commit e031716ce6
37 changed files with 1483 additions and 2510 deletions
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+2 -38
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@@ -1,11 +1,11 @@
{
"name": "open-meteo-weather",
"name": "ombrella",
"version": "0.0.1",
"lockfileVersion": 3,
"requires": true,
"packages": {
"": {
"name": "open-meteo-weather",
"name": "ombrella",
"version": "0.0.1",
"devDependencies": {
"@eslint/compat": "^2.1.0",
@@ -23,7 +23,6 @@
"clsx": "^2.1.1",
"date-fns": "^4.4.0",
"date-fns-tz": "^3.2.0",
"echarts": "^6.1.0",
"eslint": "^10.7.0",
"eslint-config-prettier": "^10.1.8",
"eslint-plugin-svelte": "^3.21.0",
@@ -2123,24 +2122,6 @@
"dev": true,
"license": "MIT"
},
"node_modules/echarts": {
"version": "6.1.0",
"resolved": "https://registry.npmjs.org/echarts/-/echarts-6.1.0.tgz",
"integrity": "sha512-q0yaFPggC9FUdsWH4blavRWFmxdrIodbkoKNAjJudAI6CA9gNPxHtV2RcZNEepZVlk4yvBYkOkbk6HIVpIyHZA==",
"dev": true,
"license": "Apache-2.0",
"dependencies": {
"tslib": "2.3.0",
"zrender": "6.1.0"
}
},
"node_modules/echarts/node_modules/tslib": {
"version": "2.3.0",
"resolved": "https://registry.npmjs.org/tslib/-/tslib-2.3.0.tgz",
"integrity": "sha512-N82ooyxVNm6h1riLCoyS9e3fuJ3AMG2zIZs2Gd1ATcSFjSA23Q0fzjjZeh0jbJvWVDZ0cJT8yaNNaaXHzueNjg==",
"dev": true,
"license": "0BSD"
},
"node_modules/enhanced-resolve": {
"version": "5.24.2",
"resolved": "https://registry.npmjs.org/enhanced-resolve/-/enhanced-resolve-5.24.2.tgz",
@@ -4510,23 +4491,6 @@
"integrity": "sha512-B58NGBEoc8Y9MWWCQGl/gq9xBCe4IiKM0a2x7GZdQKOW5Exr8S1W24J6OgM1njK8xCRGvAJIL/MxXHf6SkmQKQ==",
"dev": true,
"license": "MIT"
},
"node_modules/zrender": {
"version": "6.1.0",
"resolved": "https://registry.npmjs.org/zrender/-/zrender-6.1.0.tgz",
"integrity": "sha512-oEGMDB6pOP2S6OwRR4PdVv610zrjnA3Bh+JnSG12fYJlBKjtNAoEb5fSUoCOOINlH96I2fU38/A2UpRKs67xYQ==",
"dev": true,
"license": "BSD-3-Clause",
"dependencies": {
"tslib": "2.3.0"
}
},
"node_modules/zrender/node_modules/tslib": {
"version": "2.3.0",
"resolved": "https://registry.npmjs.org/tslib/-/tslib-2.3.0.tgz",
"integrity": "sha512-N82ooyxVNm6h1riLCoyS9e3fuJ3AMG2zIZs2Gd1ATcSFjSA23Q0fzjjZeh0jbJvWVDZ0cJT8yaNNaaXHzueNjg==",
"dev": true,
"license": "0BSD"
}
}
}
+1 -2
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@@ -1,5 +1,5 @@
{
"name": "open-meteo-weather",
"name": "ombrella",
"private": true,
"version": "0.0.1",
"type": "module",
@@ -32,7 +32,6 @@
"clsx": "^2.1.1",
"date-fns": "^4.4.0",
"date-fns-tz": "^3.2.0",
"echarts": "^6.1.0",
"eslint": "^10.7.0",
"eslint-config-prettier": "^10.1.8",
"eslint-plugin-svelte": "^3.21.0",
+829
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@@ -0,0 +1,829 @@
<!--
CanvasChart.svelte — Self-contained canvas time-series chart
Renders line and bar series over a shared hourly time axis on a
devicePixelRatio-aware canvas. Supports daylight background bands,
timezone-aware axis labels with emphasized day boundaries, a DOM tooltip
with crosshair, wheel/pinch zoom, drag panning, and cross-chart
synchronization via the `group` prop.
Usage:
<CanvasChart
timestamps={epochSeconds}
timezone="Europe/Berlin"
series={[{ name: 'Temperature', type: 'line', color: '#ef6c00', data: temps }]}
bands={daylightBands}
unit="°C"
group="meteogram"
/>
-->
<script module lang="ts">
export interface ChartSeries {
/** Series display name (used in legend and tooltip) */
name: string;
/** Render style */
type: 'line' | 'bar';
/** Any CSS color string */
color: string;
/** One value per timestamp; null values break lines */
data: (number | null)[];
/** Line width in px (default 2); 0 draws only the area fill */
width?: number;
/** Draw a low-alpha area fill below (or above, on inverted axes) the line */
fill?: boolean;
/** Opacity of the area fill (default 0.15) */
fillOpacity?: number;
/** Draw the line dashed */
dashed?: boolean;
/** Hide the series entirely (not rendered, not listed in the tooltip) */
hidden?: boolean;
/** Which y axis the series is scaled against (default 'left') */
axis?: 'left' | 'right';
/** Include the series in the legend row (default true) */
showInLegend?: boolean;
/** Custom tooltip value formatter */
format?: (value: number, index: number) => string;
}
interface GroupState {
range: { start: number; end: number } | null;
hover: number | null;
count: number;
}
// Module-level registry: charts sharing a `group` name share zoom range and
// crosshair position through one reactive state object.
const groups: Record<string, GroupState> = $state({});
function acquireGroup(name: string): GroupState {
if (!groups[name]) {
groups[name] = { range: null, hover: null, count: 0 };
}
groups[name].count++;
return groups[name];
}
function releaseGroup(name: string): void {
const state = groups[name];
if (!state) return;
state.count--;
if (state.count <= 0) {
delete groups[name];
}
}
</script>
<script lang="ts">
import { onDestroy, onMount, untrack } from 'svelte';
import { SvelteMap, SvelteSet } from 'svelte/reactivity';
import { formatZoned, getZonedHour } from '$lib/utils/date';
import { CHART_COLORS } from './data';
// ─── Props ──────────────────────────────────────────────────────────────────
interface Props {
/** Time axis values in epoch seconds (shared by all series) */
timestamps: number[];
/** IANA timezone used for all time labels */
timezone: string;
/** Series to render */
series: ChartSeries[];
/** Background bands (epoch seconds), e.g. daylight */
bands?: { start: number; end: number }[];
/** Unit label for the left y axis (also used in tooltip values) */
unit?: string;
/** Unit label for the right y axis; when set, right-axis labels are drawn */
unitRight?: string;
/** Canvas height in px */
height?: number;
/** Charts sharing a group share x-zoom range and crosshair */
group?: string;
/** Fixed left-axis minimum (otherwise derived from data, including 0) */
yMin?: number;
/** Fixed left-axis maximum */
yMax?: number;
/** Fixed right-axis minimum (default 0) */
yMinRight?: number;
/** Fixed right-axis maximum (default 100) */
yMaxRight?: number;
/** Invert the right axis (min at the top) */
invertRight?: boolean;
/** Chart title drawn top-left on the canvas */
title?: string;
/** Smaller subtitle drawn under the title */
subtitle?: string;
/** Show the DOM legend row above the canvas */
showLegend?: boolean;
/** Draw a red vertical line at the current time */
showNow?: boolean;
/** Draw the Open-Meteo.com credit bottom-right */
showCredit?: boolean;
/** Optional CSS class for the outer container */
class?: string;
}
let {
timestamps,
timezone,
series,
bands = [],
unit = '',
unitRight,
height = 300,
group,
yMin,
yMax,
yMinRight,
yMaxRight,
invertRight = false,
title,
subtitle,
showLegend = false,
showNow = true,
showCredit = false,
class: className = ''
}: Props = $props();
// ─── Constants ──────────────────────────────────────────────────────────────
const PAD_LEFT = 60;
const PAD_BOTTOM = 34;
const MIN_SPAN = 2 * 3600; // minimum zoom window: 2 hours
const HOUR = 3600;
// ─── State ──────────────────────────────────────────────────────────────────
let containerEl: HTMLDivElement | undefined = $state();
let canvasEl: HTMLCanvasElement | undefined = $state();
let width = $state(0);
let themeVersion = $state(0);
const legendHidden = new SvelteSet<string>();
// Zoom range and crosshair: either group-shared or local to this chart.
// The group is acquired once at component init (the prop is treated as fixed).
const groupName = untrack(() => group);
const groupState: GroupState | null = groupName ? acquireGroup(groupName) : null;
let localRange = $state<{ start: number; end: number } | null>(null);
let localHover = $state<number | null>(null);
onDestroy(() => {
if (groupName) releaseGroup(groupName);
});
// ─── Derived: view window & scales ──────────────────────────────────────────
let viewRange = $derived(groupState ? groupState.range : localRange);
let hoverTime = $derived(groupState ? groupState.hover : localHover);
let tMin = $derived(timestamps.length > 0 ? timestamps[0] : 0);
let tMax = $derived(timestamps.length > 1 ? timestamps[timestamps.length - 1] : tMin + HOUR);
let viewStart = $derived(viewRange ? Math.max(tMin, viewRange.start) : tMin);
let viewEnd = $derived(
viewRange ? Math.max(viewStart + MIN_SPAN / 2, Math.min(tMax, viewRange.end)) : tMax
);
let zoomed = $derived(viewRange !== null && viewEnd - viewStart < tMax - tMin);
let visibleSeries = $derived(series.filter((s) => !s.hidden && !legendHidden.has(s.name)));
let hasRightAxis = $derived(series.some((s) => s.axis === 'right'));
let padRight = $derived(hasRightAxis ? 56 : 20);
let padTop = $derived(title ? (subtitle ? 66 : 46) : 28);
let plotW = $derived(Math.max(1, width - PAD_LEFT - padRight));
let plotH = $derived(Math.max(1, height - padTop - PAD_BOTTOM));
interface Scale {
min: number;
max: number;
step: number;
}
function niceNum(range: number, round: boolean): number {
const exp = Math.floor(Math.log10(range));
const frac = range / 10 ** exp;
let nice: number;
if (round) {
nice = frac < 1.5 ? 1 : frac < 3 ? 2 : frac < 7 ? 5 : 10;
} else {
nice = frac <= 1 ? 1 : frac <= 2 ? 2 : frac <= 5 ? 5 : 10;
}
return nice * 10 ** exp;
}
function dataExtent(axis: 'left' | 'right'): [number, number] {
let lo = Infinity;
let hi = -Infinity;
for (const s of visibleSeries) {
if ((s.axis ?? 'left') !== axis) continue;
for (const v of s.data) {
if (v === null || !isFinite(v)) continue;
if (v < lo) lo = v;
if (v > hi) hi = v;
}
}
if (!isFinite(lo)) return [0, 1];
// Match the previous ECharts behavior (value axis without `scale`): always
// include zero in the axis extent.
lo = Math.min(lo, 0);
hi = Math.max(hi, 0);
if (lo === hi) hi = lo + 1;
return [lo, hi];
}
function buildScale(lo: number, hi: number, loFixed: boolean, hiFixed: boolean): Scale {
const step = niceNum(niceNum(Math.max(hi - lo, 1e-9), false) / 4, true);
const min = loFixed ? lo : Math.floor(lo / step) * step;
const max = hiFixed ? hi : Math.ceil(hi / step) * step;
return { min, max: max > min ? max : min + step, step };
}
let leftScale = $derived.by((): Scale => {
const [dLo, dHi] = dataExtent('left');
return buildScale(yMin ?? dLo, yMax ?? dHi, yMin !== undefined, yMax !== undefined);
});
let rightScale = $derived.by((): Scale => {
const lo = yMinRight ?? 0;
const hi = yMaxRight ?? 100;
return buildScale(lo, hi, true, true);
});
function xPix(t: number): number {
return PAD_LEFT + ((t - viewStart) / (viewEnd - viewStart)) * plotW;
}
function pixToTime(x: number): number {
return viewStart + ((x - PAD_LEFT) / plotW) * (viewEnd - viewStart);
}
function yPix(v: number, axis: 'left' | 'right'): number {
if (axis === 'right') {
const frac = (v - rightScale.min) / (rightScale.max - rightScale.min);
return invertRight ? padTop + frac * plotH : padTop + (1 - frac) * plotH;
}
const frac = (v - leftScale.min) / (leftScale.max - leftScale.min);
return padTop + (1 - frac) * plotH;
}
// ─── Zoom / pan helpers ─────────────────────────────────────────────────────
function setViewRange(range: { start: number; end: number } | null): void {
if (groupState) groupState.range = range;
else localRange = range;
}
function setHover(time: number | null): void {
if (groupState) groupState.hover = time;
else localHover = time;
}
function applyRange(start: number, end: number): void {
const full = tMax - tMin;
const span = Math.min(Math.max(end - start, MIN_SPAN), full);
if (span >= full) {
setViewRange(null);
return;
}
const s = Math.max(tMin, Math.min(start, tMax - span));
setViewRange({ start: s, end: s + span });
}
function zoomAt(centerTime: number, factor: number): void {
const span = viewEnd - viewStart;
const newSpan = span * factor;
const frac = (centerTime - viewStart) / span;
applyRange(centerTime - frac * newSpan, centerTime + (1 - frac) * newSpan);
}
// ─── Public API ─────────────────────────────────────────────────────────────
/** Returns the chart as a PNG data URL, or null before mount. */
export function getPngDataUrl(): string | null {
return canvasEl ? canvasEl.toDataURL('image/png') : null;
}
/** Zooms the x axis to the given epoch-second range (clamped to the data). */
export function setRange(startEpoch: number, endEpoch: number): void {
applyRange(startEpoch, endEpoch);
}
/** Resets the x axis to the full data range. */
export function resetRange(): void {
setViewRange(null);
}
// ─── Tooltip data ───────────────────────────────────────────────────────────
function nearestIndex(arr: number[], t: number): number {
let lo = 0;
let hi = arr.length - 1;
while (lo < hi) {
const mid = (lo + hi) >> 1;
if (arr[mid] < t) lo = mid + 1;
else hi = mid;
}
if (lo > 0 && Math.abs(arr[lo - 1] - t) <= Math.abs(arr[lo] - t)) return lo - 1;
return lo;
}
let hoverIdx = $derived(
hoverTime === null || timestamps.length === 0 ? -1 : nearestIndex(timestamps, hoverTime)
);
interface TooltipRow {
name: string;
color: string;
value: string;
}
let tooltipRows = $derived.by((): TooltipRow[] => {
if (hoverIdx < 0) return [];
const rows: TooltipRow[] = [];
for (const s of visibleSeries) {
const v = s.data[hoverIdx];
if (v === null || v === undefined || !isFinite(v)) continue;
const axisUnit = (s.axis ?? 'left') === 'right' ? (unitRight ?? '') : unit;
const value = s.format
? s.format(v, hoverIdx)
: `${v.toFixed(1)}${axisUnit ? ' ' + axisUnit : ''}`;
rows.push({ name: s.name, color: s.color, value });
}
return rows;
});
let tooltipVisible = $derived(hoverIdx >= 0 && tooltipRows.length > 0 && width > 0);
let tooltipX = $derived(hoverIdx >= 0 ? xPix(timestamps[hoverIdx]) : 0);
let tooltipFlip = $derived(tooltipX > width * 0.55);
// ─── X axis ticks ───────────────────────────────────────────────────────────
interface XTick {
t: number;
label: string;
isDay: boolean;
}
function computeXTicks(): XTick[] {
const spanHours = (viewEnd - viewStart) / HOUR;
const pxPerHour = plotW / spanHours;
const steps = [1, 2, 3, 6, 12, 24];
let step = 24;
for (const s of steps) {
if (s * pxPerHour >= 48) {
step = s;
break;
}
}
const ticks: XTick[] = [];
const first = Math.ceil(viewStart / HOUR) * HOUR;
for (let t = first; t <= viewEnd; t += HOUR) {
const date = new Date(t * 1000);
const hour = getZonedHour(date, timezone);
if (hour === 0) {
ticks.push({ t, label: formatZoned(date, timezone, 'EEE d'), isDay: true });
} else if (step < 24 && hour % step === 0) {
ticks.push({ t, label: formatZoned(date, timezone, 'HH:mm'), isDay: false });
}
}
return ticks;
}
// ─── Rendering ──────────────────────────────────────────────────────────────
function tickDecimals(step: number): number {
if (step >= 1) return 0;
return Math.min(3, Math.max(0, Math.ceil(-Math.log10(step))));
}
function draw(): void {
if (!canvasEl || !containerEl || width <= 0) return;
const dpr = window.devicePixelRatio || 1;
const w = Math.round(width * dpr);
const h = Math.round(height * dpr);
if (canvasEl.width !== w) canvasEl.width = w;
if (canvasEl.height !== h) canvasEl.height = h;
const ctx = canvasEl.getContext('2d');
if (!ctx) return;
ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
ctx.clearRect(0, 0, width, height);
if (timestamps.length === 0) return;
const styles = getComputedStyle(containerEl);
const cssColor = (name: string, fallback: string): string =>
styles.getPropertyValue(name).trim() || fallback;
const textColor = cssColor('--muted-foreground', '#6b7280');
const strongColor = cssColor('--foreground', '#374151');
const gridColor = cssColor('--border', 'rgba(0, 0, 0, 0.1)');
const plotRight = PAD_LEFT + plotW;
const plotBottom = padTop + plotH;
const font = '11px system-ui, sans-serif';
// Daylight bands
ctx.fillStyle = CHART_COLORS.daylight;
for (const band of bands) {
if (band.end < viewStart || band.start > viewEnd) continue;
const x1 = Math.max(PAD_LEFT, xPix(band.start));
const x2 = Math.min(plotRight, xPix(band.end));
if (x2 > x1) ctx.fillRect(x1, padTop, x2 - x1, plotH);
}
// Horizontal grid lines + left axis labels
ctx.font = font;
ctx.textAlign = 'right';
ctx.textBaseline = 'middle';
for (let v = leftScale.min; v <= leftScale.max + leftScale.step / 2; v += leftScale.step) {
const y = yPix(v, 'left');
ctx.strokeStyle = gridColor;
ctx.lineWidth = 1;
ctx.beginPath();
ctx.moveTo(PAD_LEFT, y);
ctx.lineTo(plotRight, y);
ctx.stroke();
ctx.fillStyle = textColor;
ctx.fillText(v.toFixed(tickDecimals(leftScale.step)), PAD_LEFT - 8, y);
}
// Right axis labels (only when a unit is provided)
if (hasRightAxis && unitRight !== undefined) {
ctx.textAlign = 'left';
ctx.fillStyle = textColor;
for (
let v = rightScale.min;
v <= rightScale.max + rightScale.step / 2;
v += rightScale.step
) {
ctx.fillText(v.toFixed(tickDecimals(rightScale.step)), plotRight + 8, yPix(v, 'right'));
}
}
// X axis ticks: midnight gridlines + time labels
ctx.textBaseline = 'top';
for (const tick of computeXTicks()) {
const x = xPix(tick.t);
if (tick.isDay) {
ctx.strokeStyle = gridColor;
ctx.lineWidth = 1;
ctx.beginPath();
ctx.moveTo(x, padTop);
ctx.lineTo(x, plotBottom);
ctx.stroke();
ctx.font = 'bold 11px system-ui, sans-serif';
ctx.fillStyle = strongColor;
} else {
ctx.strokeStyle = gridColor;
ctx.beginPath();
ctx.moveTo(x, plotBottom);
ctx.lineTo(x, plotBottom + 4);
ctx.stroke();
ctx.font = font;
ctx.fillStyle = textColor;
}
ctx.textAlign = 'center';
ctx.fillText(tick.label, x, plotBottom + 7);
}
// Series (clipped to the plot area)
ctx.save();
ctx.beginPath();
ctx.rect(PAD_LEFT, padTop, plotW, plotH);
ctx.clip();
const barSeries = visibleSeries.filter((s) => s.type === 'bar');
const interval = timestamps.length > 1 ? timestamps[1] - timestamps[0] : HOUR;
const slot = plotW / ((viewEnd - viewStart) / interval);
const barWidth = Math.min(8, Math.max(1, (slot * 0.7) / Math.max(1, barSeries.length)));
for (const s of visibleSeries) {
const axis = s.axis ?? 'left';
const baseline = Math.min(plotBottom, Math.max(padTop, yPix(0, axis)));
if (s.type === 'bar') {
const bi = barSeries.indexOf(s);
const groupOffset = (barSeries.length * barWidth) / 2 - bi * barWidth;
ctx.fillStyle = s.color;
for (let i = 0; i < timestamps.length; i++) {
const v = s.data[i];
if (v === null || v === undefined || !isFinite(v)) continue;
const t = timestamps[i];
if (t < viewStart - interval || t > viewEnd + interval) continue;
const x = xPix(t) - groupOffset;
const y = yPix(v, axis);
ctx.fillRect(x, Math.min(y, baseline), barWidth, Math.abs(baseline - y) || 1);
}
continue;
}
// Line series: draw fill and stroke per contiguous non-null run
// (points outside the view are handled by the clip rect)
const runs: Array<Array<[number, number]>> = [];
let run: Array<[number, number]> = [];
for (let i = 0; i < timestamps.length; i++) {
const v = s.data[i];
if (v === null || v === undefined || !isFinite(v)) {
if (run.length > 0) runs.push(run);
run = [];
continue;
}
run.push([xPix(timestamps[i]), yPix(v, axis)]);
}
if (run.length > 0) runs.push(run);
for (const points of runs) {
if (points.length === 0) continue;
if (s.fill && points.length > 1) {
ctx.beginPath();
ctx.moveTo(points[0][0], points[0][1]);
for (let i = 1; i < points.length; i++) ctx.lineTo(points[i][0], points[i][1]);
ctx.lineTo(points[points.length - 1][0], baseline);
ctx.lineTo(points[0][0], baseline);
ctx.closePath();
ctx.globalAlpha = s.fillOpacity ?? 0.15;
ctx.fillStyle = s.color;
ctx.fill();
ctx.globalAlpha = 1;
}
const lineWidth = s.width ?? 2;
if (lineWidth > 0) {
ctx.beginPath();
ctx.moveTo(points[0][0], points[0][1]);
for (let i = 1; i < points.length; i++) ctx.lineTo(points[i][0], points[i][1]);
ctx.strokeStyle = s.color;
ctx.lineWidth = lineWidth;
ctx.lineJoin = 'round';
ctx.lineCap = 'round';
ctx.setLineDash(s.dashed ? [6, 4] : []);
ctx.stroke();
ctx.setLineDash([]);
}
}
}
// Current time marker
if (showNow) {
const now = Date.now() / 1000;
if (now >= viewStart && now <= viewEnd) {
const x = xPix(now);
ctx.strokeStyle = CHART_COLORS.currentTimeLine;
ctx.lineWidth = 2;
ctx.beginPath();
ctx.moveTo(x, padTop);
ctx.lineTo(x, plotBottom);
ctx.stroke();
}
}
// Crosshair (snapped to the nearest timestamp)
if (hoverIdx >= 0) {
const t = timestamps[hoverIdx];
if (t >= viewStart && t <= viewEnd) {
const x = xPix(t);
ctx.strokeStyle = textColor;
ctx.lineWidth = 1;
ctx.setLineDash([4, 4]);
ctx.beginPath();
ctx.moveTo(x, padTop);
ctx.lineTo(x, plotBottom);
ctx.stroke();
ctx.setLineDash([]);
}
}
ctx.restore();
// Axis unit labels
ctx.font = font;
ctx.textBaseline = 'alphabetic';
if (unit) {
ctx.textAlign = 'right';
ctx.fillStyle = textColor;
ctx.fillText(unit, PAD_LEFT - 4, padTop - 8);
}
if (hasRightAxis && unitRight) {
ctx.textAlign = 'left';
ctx.fillStyle = textColor;
ctx.fillText(unitRight, plotRight + 4, padTop - 8);
}
// Title / subtitle
if (title) {
ctx.textAlign = 'left';
ctx.font = '16px system-ui, sans-serif';
ctx.fillStyle = strongColor;
ctx.fillText(title, 4, 20);
if (subtitle) {
ctx.font = '12px system-ui, sans-serif';
ctx.fillStyle = textColor;
ctx.fillText(subtitle, 4, 38);
}
}
// Credit watermark
if (showCredit) {
ctx.textAlign = 'right';
ctx.font = '10px system-ui, sans-serif';
ctx.globalAlpha = 0.4;
ctx.fillStyle = strongColor;
ctx.fillText('Open-Meteo.com', width - 10, height - 6);
ctx.globalAlpha = 1;
}
}
$effect(() => {
// themeVersion is a manual dependency: it bumps when the document theme
// class changes so colors are re-read from CSS custom properties.
void themeVersion;
draw();
});
// ─── Lifecycle: resize + theme observers ────────────────────────────────────
onMount(() => {
const resizeObserver = new ResizeObserver((entries) => {
for (const entry of entries) {
width = entry.contentRect.width;
}
});
if (containerEl) resizeObserver.observe(containerEl);
const themeObserver = new MutationObserver(() => {
themeVersion++;
});
themeObserver.observe(document.documentElement, {
attributes: true,
attributeFilter: ['class', 'data-theme']
});
return () => {
resizeObserver.disconnect();
themeObserver.disconnect();
};
});
// ─── Interaction ────────────────────────────────────────────────────────────
// Listeners are attached programmatically (not via template attributes) so the
// wheel handler can be registered as non-passive.
$effect(() => {
const el = canvasEl;
if (!el) return;
// Plain interaction bookkeeping (not reactive state)
const pointers = new SvelteMap<number, { x: number; y: number }>();
let panStart: { x: number; start: number; end: number } | null = null;
let pinchStart: { dist: number; start: number; end: number } | null = null;
const localX = (e: { clientX: number }): number => e.clientX - el.getBoundingClientRect().left;
const updateHover = (e: PointerEvent): void => {
const t = pixToTime(localX(e));
setHover(t >= viewStart && t <= viewEnd ? t : null);
};
const onPointerDown = (e: PointerEvent): void => {
el.setPointerCapture(e.pointerId);
pointers.set(e.pointerId, { x: e.clientX, y: e.clientY });
if (pointers.size === 1) {
panStart = { x: e.clientX, start: viewStart, end: viewEnd };
pinchStart = null;
} else if (pointers.size === 2) {
const [a, b] = [...pointers.values()];
pinchStart = { dist: Math.max(10, Math.abs(a.x - b.x)), start: viewStart, end: viewEnd };
panStart = null;
setHover(null);
}
};
const onPointerMove = (e: PointerEvent): void => {
if (pointers.has(e.pointerId)) {
pointers.set(e.pointerId, { x: e.clientX, y: e.clientY });
}
if (pinchStart && pointers.size === 2) {
const [a, b] = [...pointers.values()];
const dist = Math.max(10, Math.abs(a.x - b.x));
const scale = pinchStart.dist / dist;
const span = pinchStart.end - pinchStart.start;
const center = (pinchStart.start + pinchStart.end) / 2;
const newSpan = span * scale;
applyRange(center - newSpan / 2, center + newSpan / 2);
return;
}
if (panStart && pointers.size === 1 && zoomed) {
const dt = ((panStart.x - e.clientX) / plotW) * (panStart.end - panStart.start);
applyRange(panStart.start + dt, panStart.end + dt);
return;
}
updateHover(e);
};
const onPointerUp = (e: PointerEvent): void => {
pointers.delete(e.pointerId);
if (pointers.size < 2) pinchStart = null;
if (pointers.size < 1) panStart = null;
if (e.pointerType !== 'mouse') setHover(null);
};
const onPointerLeave = (): void => {
if (pointers.size === 0) setHover(null);
};
const onWheel = (e: WheelEvent): void => {
e.preventDefault();
const t = pixToTime(localX(e));
zoomAt(t, e.deltaY < 0 ? 1 / 1.3 : 1.3);
};
const onDblClick = (): void => {
setViewRange(null);
};
el.addEventListener('pointerdown', onPointerDown);
el.addEventListener('pointermove', onPointerMove);
el.addEventListener('pointerup', onPointerUp);
el.addEventListener('pointercancel', onPointerUp);
el.addEventListener('pointerleave', onPointerLeave);
el.addEventListener('wheel', onWheel, { passive: false });
el.addEventListener('dblclick', onDblClick);
return () => {
el.removeEventListener('pointerdown', onPointerDown);
el.removeEventListener('pointermove', onPointerMove);
el.removeEventListener('pointerup', onPointerUp);
el.removeEventListener('pointercancel', onPointerUp);
el.removeEventListener('pointerleave', onPointerLeave);
el.removeEventListener('wheel', onWheel);
el.removeEventListener('dblclick', onDblClick);
};
});
function toggleSeries(name: string): void {
if (legendHidden.has(name)) legendHidden.delete(name);
else legendHidden.add(name);
}
</script>
<div bind:this={containerEl} class="relative w-full select-none {className}">
{#if showLegend && series.length > 0}
<div class="mb-1 flex flex-wrap items-center gap-x-3 gap-y-1 px-1">
{#each series.filter((s) => s.showInLegend !== false) as s (s.name)}
<button
type="button"
class="flex cursor-pointer items-center gap-1.5 text-xs transition-opacity {legendHidden.has(
s.name
)
? 'opacity-40'
: ''}"
onclick={() => toggleSeries(s.name)}
title="Toggle {s.name}"
>
<span
class="inline-block h-2.5 w-2.5 shrink-0 rounded-full"
style:background-color={s.color}
></span>
<span class="text-muted-foreground">{s.name}</span>
</button>
{/each}
</div>
{/if}
<div class="relative">
<canvas
bind:this={canvasEl}
class="block w-full"
style:height="{height}px"
style:touch-action="pan-y"
></canvas>
{#if tooltipVisible}
<div
class="pointer-events-none absolute z-20 rounded-md border border-border bg-popover px-3 py-2 text-xs whitespace-nowrap text-popover-foreground shadow-md"
style:top="{padTop + 8}px"
style:left="{tooltipFlip ? tooltipX - 12 : tooltipX + 12}px"
style:transform={tooltipFlip ? 'translateX(-100%)' : ''}
>
<div class="mb-1 font-semibold">
{formatZoned(new Date(timestamps[hoverIdx] * 1000), timezone, 'EEE d MMM HH:mm')}
</div>
{#each tooltipRows as row (row.name)}
<div class="flex items-center gap-1.5">
<span
class="inline-block h-2 w-2 shrink-0 rounded-full"
style:background-color={row.color}
></span>
<span>{row.name}:</span>
<span class="ml-auto pl-2 font-semibold">{row.value}</span>
</div>
{/each}
</div>
{/if}
</div>
</div>
+24
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@@ -0,0 +1,24 @@
/**
* Daylight Bands
*
* Converts sunrise/sunset timestamp arrays into neutral background band
* descriptors that CanvasChart renders as shaded daylight areas.
*/
/** A background band on the time axis, expressed in epoch seconds. */
export interface DaylightBand {
/** Band start (epoch seconds) */
start: number;
/** Band end (epoch seconds) */
end: number;
}
/**
* Builds daylight bands from sunrise/sunset arrays.
*
* @param sunrise - Array of sunrise timestamps (unix seconds)
* @param sunset - Array of sunset timestamps (unix seconds)
*/
export function buildDaylightBands(sunrise: number[], sunset: number[]): DaylightBand[] {
return sunrise.map((r, i) => ({ start: r, end: sunset[i] }));
}
+106
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@@ -0,0 +1,106 @@
/**
* Chart Data Helpers
*
* Shared color palette and data-processing helpers used by the chart pages.
* Ported from the previous ECharts utilities so the visual identity and
* calculations stay identical.
*/
// ─── Color Palette ───────────────────────────────────────────────────────────
/** Default series color palette matching the application's design system */
export const SERIES_COLORS = [
'#5470c6',
'#91cc75',
'#fac858',
'#ee6666',
'#73c0de',
'#3ba272',
'#fc8452',
'#9a60b4',
'#ea7ccc',
'#4dc9f6'
] as const;
/** Semantic colors used for specific chart elements */
export const CHART_COLORS = {
average: '#5e5e5e',
currentTimeLine: '#ef4444',
daylight: 'rgba(255, 255, 194, 0.3)',
memberLine: 'rgba(115, 192, 222, 0.45)'
} as const;
// ─── Utility: Detect column-type variables ───────────────────────────────────
/** Units that should be rendered as bar/column charts instead of lines. */
const COLUMN_UNITS = new Set(['mm', 'cm', 'inch', 'MJ/m²']);
/**
* Returns true if the given unit should be rendered as a bar chart.
*/
export function isColumnUnit(unit: string): boolean {
return COLUMN_UNITS.has(unit);
}
// ─── Data Processing Helpers ─────────────────────────────────────────────────
export interface AverageResult {
average: number[];
averageCount: number[];
}
/**
* Calculates per-timestep average and count from hourly model data.
*
* @param hourlyData - The `data.hourly` object from the API response
* @param variable - The variable prefix to filter on (e.g. 'temperature_2m')
* @param timeLength - Number of timesteps
* @returns Object containing running average and count arrays
*/
export function calculateAverage(
hourlyData: Record<string, unknown>,
variable: string,
timeLength: number
): AverageResult {
const average = new Array<number>(timeLength).fill(0);
const averageCount = new Array<number>(timeLength).fill(0);
for (const [model, values] of Object.entries(hourlyData)) {
if (model === 'time') continue;
if (!model.startsWith(variable)) continue;
for (const [index, val] of (values as number[]).entries()) {
if (val !== null && val !== undefined && isFinite(val)) {
average[index] += val;
averageCount[index]++;
}
}
}
// Finalize average values
for (let i = 0; i < timeLength; i++) {
if (averageCount[i] > 0) {
average[i] = Math.round((average[i] / averageCount[i]) * 10) / 10;
}
}
return { average, averageCount };
}
/**
* Finds the unit string for a given variable from the hourly_units map.
* Returns an empty string if the variable is not found.
*/
export function findUnit(
hourlyUnits: Record<string, string>,
hourlyData: Record<string, unknown>,
variable: string
): string {
for (const model of Object.keys(hourlyData)) {
if (model === 'time') continue;
if (model.startsWith(variable) && hourlyUnits[model]) {
return hourlyUnits[model];
}
}
return '';
}
+15
View File
@@ -0,0 +1,15 @@
/**
* Canvas Charts — Barrel Export
*
* Usage:
* import { CanvasChart, buildDaylightBands, SERIES_COLORS } from '$lib/charts';
*/
export { default as CanvasChart } from './CanvasChart.svelte';
export type { ChartSeries } from './CanvasChart.svelte';
export { buildDaylightBands } from './bands';
export type { DaylightBand } from './bands';
export { CHART_COLORS, SERIES_COLORS, calculateAverage, findUnit, isColumnUnit } from './data';
export type { AverageResult } from './data';
@@ -11,7 +11,7 @@
Usage:
<ChartContainer loading={!chartsReady} chartCount={3}>
{#each charts as chart}
<EChart option={chart.option} />
<CanvasChart {...chart} />
{/each}
</ChartContainer>
-->
+80 -66
View File
@@ -3,7 +3,6 @@
Provides a toolbar row with:
- Download full meteogram as PNG button
- Download full meteogram as SVG button
- Slot for additional custom controls (e.g. legend toggle)
When multiple charts are provided, they are stitched into a single
@@ -11,7 +10,7 @@
Usage:
<ChartToolbar
charts={chartInstances}
charts={chartComponents}
fileName="model-comparison"
>
{#snippet controls()}
@@ -19,22 +18,23 @@
{/snippet}
</ChartToolbar>
-->
<script lang="ts">
import { downloadMeteogram } from '$lib/utils/echarts/download';
<script module lang="ts">
/** Anything that can export itself as a PNG data URL (e.g. a CanvasChart). */
export interface DownloadableChart {
getPngDataUrl(): string | null;
}
</script>
import type { ExportFormat } from '$lib/utils/echarts/download';
import type * as echarts from 'echarts';
<script lang="ts">
import type { Snippet } from 'svelte';
// ─── Props ──────────────────────────────────────────────────────────────────
interface Props {
/** Array of ECharts instances available for download */
charts?: echarts.ECharts[];
/** Chart components available for download (undefined entries are skipped) */
charts?: Array<DownloadableChart | undefined | null>;
/** Base file name for downloaded images (without extension) */
fileName?: string;
/** Pixel ratio for PNG exports (default: 2) */
pixelRatio?: number;
/** Optional CSS class for the outer container */
class?: string;
/** Slot for additional controls (switches, checkboxes, etc.) */
@@ -43,33 +43,88 @@
let {
charts = [],
fileName = 'open-meteo-chart',
pixelRatio = 2,
fileName = 'ombrella-chart',
class: className = '',
controls
}: Props = $props();
// ─── State ──────────────────────────────────────────────────────────────────
let downloadingFormat: ExportFormat | null = $state(null);
let downloading = $state(false);
// ─── Computed ───────────────────────────────────────────────────────────────
let hasCharts = $derived(charts.length > 0);
let hasCharts = $derived(charts.some((chart) => chart != null));
// ─── Handlers ───────────────────────────────────────────────────────────────
// ─── Download ───────────────────────────────────────────────────────────────
async function handleDownload(format: ExportFormat): Promise<void> {
if (!hasCharts || downloadingFormat) return;
function loadImage(src: string): Promise<HTMLImageElement> {
return new Promise((resolve) => {
const img = new Image();
img.onload = () => resolve(img);
img.onerror = () => resolve(img);
img.src = src;
});
}
downloadingFormat = format;
/** Resolves the page background so exports match the current theme. */
function exportBackground(): string {
const bg = getComputedStyle(document.documentElement).getPropertyValue('--background').trim();
return bg || '#ffffff';
}
function triggerDownload(url: string, name: string): void {
const link = document.createElement('a');
link.href = url;
link.download = name;
link.style.display = 'none';
document.body.appendChild(link);
link.click();
requestAnimationFrame(() => {
document.body.removeChild(link);
});
}
async function handleDownload(): Promise<void> {
if (!hasCharts || downloading) return;
downloading = true;
try {
await new Promise((resolve) => setTimeout(resolve, 50));
downloadMeteogram(charts, { fileName, format, pixelRatio });
const dataUrls = charts
.filter((chart): chart is DownloadableChart => chart != null)
.map((chart) => chart.getPngDataUrl())
.filter((url): url is string => url !== null);
if (dataUrls.length === 0) return;
const images = (await Promise.all(dataUrls.map(loadImage))).filter(
(img) => img.naturalWidth > 0
);
if (images.length === 0) return;
const maxWidth = Math.max(...images.map((img) => img.naturalWidth));
const totalHeight = images.reduce((sum, img) => sum + img.naturalHeight, 0);
const canvas = document.createElement('canvas');
canvas.width = maxWidth;
canvas.height = totalHeight;
const ctx = canvas.getContext('2d');
if (!ctx) return;
ctx.fillStyle = exportBackground();
ctx.fillRect(0, 0, maxWidth, totalHeight);
let y = 0;
for (const img of images) {
ctx.drawImage(img, 0, y);
y += img.naturalHeight;
}
triggerDownload(canvas.toDataURL('image/png'), `${fileName}.png`);
} finally {
setTimeout(() => {
downloadingFormat = null;
downloading = false;
}, 500);
}
}
@@ -85,17 +140,16 @@
{/if}
</div>
<!-- Right side: Download buttons -->
<!-- Right side: Download button -->
<div class="flex flex-wrap items-center gap-2">
<!-- Download as PNG -->
<button
type="button"
class="toolbar-btn"
disabled={!hasCharts || downloadingFormat !== null}
onclick={() => handleDownload('png')}
disabled={!hasCharts || downloading}
onclick={handleDownload}
title="Download meteogram as PNG image"
>
{#if downloadingFormat === 'png'}
{#if downloading}
<svg
class="h-4 w-4 animate-spin"
xmlns="http://www.w3.org/2000/svg"
@@ -126,46 +180,6 @@
{/if}
<span>PNG</span>
</button>
<!-- Download as SVG -->
<button
type="button"
class="toolbar-btn"
disabled={!hasCharts || downloadingFormat !== null}
onclick={() => handleDownload('svg')}
title="Download meteogram as SVG vector image"
>
{#if downloadingFormat === 'svg'}
<svg
class="h-4 w-4 animate-spin"
xmlns="http://www.w3.org/2000/svg"
viewBox="0 0 24 24"
fill="none"
stroke="currentColor"
stroke-width="2"
aria-hidden="true"
>
<path d="M21 12a9 9 0 1 1-6.219-8.56" />
</svg>
{:else}
<svg
class="h-4 w-4"
xmlns="http://www.w3.org/2000/svg"
viewBox="0 0 24 24"
fill="none"
stroke="currentColor"
stroke-width="2"
stroke-linecap="round"
stroke-linejoin="round"
aria-hidden="true"
>
<path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4" />
<polyline points="7 10 12 15 17 10" />
<line x1="12" y1="15" x2="12" y2="3" />
</svg>
{/if}
<span>SVG</span>
</button>
</div>
</div>
-167
View File
@@ -1,167 +0,0 @@
<!--
EChart.svelte — Reusable ECharts wrapper component
Handles chart lifecycle (init, update, dispose), responsive resize via
ResizeObserver, and exposes the ECharts instance for programmatic access
(e.g. export/download).
Usage:
<EChart
option={chartOption}
height="300px"
renderer="canvas"
onChartReady={(chart) => { ... }}
/>
-->
<script lang="ts">
import { onDestroy, onMount } from 'svelte';
import { echarts } from './echarts';
import type { ECharts } from 'echarts';
// ─── Props ──────────────────────────────────────────────────────────────────
interface Props {
/** The ECharts option object to render */
option: Record<string, unknown>;
/** CSS height of the chart container (default: '300px') */
height?: string;
/** CSS width of the chart container (default: '100%') */
width?: string;
/** Renderer type: 'canvas' or 'svg' (default: 'canvas') */
renderer?: 'canvas' | 'svg';
/** Whether to merge options on update (true) or replace them (false) */
notMerge?: boolean;
/** Whether to delay update until next animation frame */
lazyUpdate?: boolean;
/** Optional CSS class for the outer container */
class?: string;
/** Callback fired once the chart instance is initialized */
onChartReady?: (chart: ECharts) => void;
/** Callback fired when the chart is disposed */
onChartDisposed?: () => void;
}
let {
option,
height = '300px',
width = '100%',
renderer = 'canvas',
notMerge = false,
lazyUpdate = false,
class: className = '',
onChartReady,
onChartDisposed
}: Props = $props();
// ─── Internal State ─────────────────────────────────────────────────────────
let containerEl: HTMLDivElement;
let chartInstance: ECharts | null = null;
let resizeObserver: ResizeObserver | null = null;
// ─── Public API ─────────────────────────────────────────────────────────────
/**
* Returns the underlying ECharts instance, or null if not yet initialized.
*/
export function getChart(): ECharts | null {
return chartInstance;
}
/**
* Returns true if the chart has been initialized and is not disposed.
*/
export function isReady(): boolean {
return chartInstance !== null && !chartInstance.isDisposed();
}
/**
* Triggers a manual resize of the chart.
* Useful after layout changes that the ResizeObserver might miss.
*/
export function resize(): void {
if (chartInstance && !chartInstance.isDisposed()) {
chartInstance.resize();
}
}
/**
* Disposes the chart instance and cleans up observers.
* Called automatically on component destroy, but can be invoked manually.
*/
export function dispose(): void {
cleanup();
}
// ─── Lifecycle ──────────────────────────────────────────────────────────────
onMount(() => {
initChart();
});
onDestroy(() => {
cleanup();
});
// ─── Reactivity: Update option when it changes ──────────────────────────────
$effect(() => {
if (chartInstance && !chartInstance.isDisposed() && option) {
chartInstance.setOption(option, notMerge, lazyUpdate);
}
});
// ─── Init & Cleanup ─────────────────────────────────────────────────────────
function initChart(): void {
if (!containerEl) return;
// Dispose any existing instance (e.g. from HMR)
if (chartInstance && !chartInstance.isDisposed()) {
chartInstance.dispose();
}
chartInstance = echarts.init(containerEl, null, { renderer });
if (option) {
chartInstance.setOption(option, notMerge, lazyUpdate);
}
// Set up responsive resize
resizeObserver = new ResizeObserver(() => {
if (chartInstance && !chartInstance.isDisposed()) {
chartInstance.resize();
}
});
resizeObserver.observe(containerEl);
onChartReady?.(chartInstance);
}
function cleanup(): void {
if (resizeObserver) {
resizeObserver.disconnect();
resizeObserver = null;
}
if (chartInstance) {
if (!chartInstance.isDisposed()) {
chartInstance.dispose();
}
chartInstance = null;
}
onChartDisposed?.();
}
</script>
<div bind:this={containerEl} class="echart-wrapper {className}" style:width style:height></div>
<style>
.echart-wrapper {
position: relative;
overflow: hidden;
}
</style>
-164
View File
@@ -1,164 +0,0 @@
/* ═══════════════════════════════════════════════════════════════════════════════
ECharts Global Styles — Open-Meteo Weather
Shared CSS for all ECharts chart instances across the application.
Provides consistent theming, tooltip styling, and responsive behavior
that integrates with the application's design system (Tailwind + shadcn).
═══════════════════════════════════════════════════════════════════════════════ */
/* ─── Chart Wrapper ────────────────────────────────────────────────────────── */
.echart-wrapper {
width: 100%;
position: relative;
overflow: hidden;
}
/* ─── Chart Container (legacy class support) ───────────────────────────────── */
.echarts-container {
width: 100%;
height: 100%;
min-height: 300px;
}
/* Ensure canvas background is always transparent so our page bg shows through */
.echart-wrapper canvas,
.echarts-container canvas {
background: transparent !important;
}
/* ─── Tooltip Styling ──────────────────────────────────────────────────────── */
/* Override ECharts' default tooltip to match the application's popover design */
.echarts-tooltip {
background: hsl(var(--popover)) !important;
border: 1px solid hsl(var(--border)) !important;
border-radius: var(--radius, 0.5rem) !important;
box-shadow:
0 4px 6px -1px rgb(0 0 0 / 0.1),
0 2px 4px -2px rgb(0 0 0 / 0.05) !important;
padding: 0.625rem 0.75rem !important;
font-size: 0.8125rem !important;
line-height: 1.4 !important;
max-width: min(90vw, 480px) !important;
pointer-events: none;
}
.echarts-tooltip-content {
color: hsl(var(--popover-foreground)) !important;
}
/* Tooltip marker dots — make them slightly larger and rounded */
.echarts-tooltip .echarts-tooltip-marker,
.echarts-tooltip span[style*='border-radius'] {
display: inline-block;
vertical-align: middle;
margin-right: 0.25rem;
}
/* ─── Loading Mask ─────────────────────────────────────────────────────────── */
.echarts-loading-mask {
background: hsl(var(--background) / 0.8) !important;
}
/* ─── Light Mode Adjustments ───────────────────────────────────────────────── */
[data-theme='light'] .echart-wrapper,
[data-theme='light'] .echarts-container,
:root:not(.dark):not([data-theme='dark']) .echart-wrapper,
:root:not(.dark):not([data-theme='dark']) .echarts-container {
color: hsl(var(--foreground));
}
[data-theme='light'] .echarts-tooltip,
:root:not(.dark):not([data-theme='dark']) .echarts-tooltip {
color: hsl(var(--popover-foreground)) !important;
}
/* ─── Dark Mode Adjustments ────────────────────────────────────────────────── */
.dark .echart-wrapper,
[data-theme='dark'] .echart-wrapper,
.dark .echarts-container,
[data-theme='dark'] .echarts-container {
color: hsl(var(--foreground));
}
.dark .echarts-tooltip,
[data-theme='dark'] .echarts-tooltip {
color: hsl(var(--popover-foreground)) !important;
box-shadow:
0 4px 6px -1px rgb(0 0 0 / 0.3),
0 2px 4px -2px rgb(0 0 0 / 0.15) !important;
}
/* ─── Toolbox Icon Overrides ───────────────────────────────────────────────── */
/* Make sure the toolbox icons are visually subtle until hovered */
.echart-wrapper [class*='toolbox'],
.echarts-container [class*='toolbox'] {
opacity: 0.6;
transition: opacity 150ms ease;
}
.echart-wrapper:hover [class*='toolbox'],
.echarts-container:hover [class*='toolbox'] {
opacity: 1;
}
/* ─── Chart Spacing ────────────────────────────────────────────────────────── */
/* Add consistent vertical spacing between stacked chart instances */
.chart-content .echart-wrapper + .echart-wrapper {
margin-top: 0.5rem;
}
/* ─── Responsive Sizing ────────────────────────────────────────────────────── */
@media (max-width: 640px) {
.echarts-container {
min-height: 240px;
}
/* Slightly smaller tooltips on mobile */
.echarts-tooltip {
font-size: 0.75rem !important;
padding: 0.5rem 0.625rem !important;
}
}
@media (min-width: 641px) and (max-width: 1024px) {
.echarts-container {
min-height: 280px;
}
}
/* ─── Print Styles ─────────────────────────────────────────────────────────── */
@media print {
.echart-wrapper,
.echarts-container {
break-inside: avoid;
page-break-inside: avoid;
}
/* Hide interactive elements when printing */
.echart-wrapper [class*='toolbox'],
.echarts-container [class*='toolbox'],
.chart-toolbar {
display: none !important;
}
}
/* ─── Accessibility ────────────────────────────────────────────────────────── */
/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
.echart-wrapper *,
.echarts-container * {
animation-duration: 0.01ms !important;
transition-duration: 0.01ms !important;
}
}
-34
View File
@@ -1,34 +0,0 @@
// Tree-shaken ECharts build: only the pieces the app actually renders (line
// and bar series with grid/tooltip/legend/dataZoom/mark/graphic features) are
// registered, instead of the ~1 MB full bundle.
import { BarChart, LineChart } from 'echarts/charts';
import {
DataZoomInsideComponent,
DataZoomSliderComponent,
GraphicComponent,
GridComponent,
LegendComponent,
MarkAreaComponent,
MarkLineComponent,
TitleComponent,
TooltipComponent
} from 'echarts/components';
import * as echarts from 'echarts/core';
import { CanvasRenderer } from 'echarts/renderers';
echarts.use([
LineChart,
BarChart,
GridComponent,
TooltipComponent,
LegendComponent,
TitleComponent,
DataZoomInsideComponent,
DataZoomSliderComponent,
MarkLineComponent,
MarkAreaComponent,
GraphicComponent,
CanvasRenderer
]);
export { echarts };
+1 -2
View File
@@ -4,9 +4,8 @@
* Re-exports all chart-related Svelte components from a single entry point.
*
* Usage:
* import { EChart, ChartContainer, ChartToolbar } from '$lib/components/charts';
* import { ChartContainer, ChartToolbar } from '$lib/components/charts';
*/
export { default as EChart } from './EChart.svelte';
export { default as ChartContainer } from './ChartContainer.svelte';
export { default as ChartToolbar } from './ChartToolbar.svelte';
@@ -52,13 +52,16 @@
class:w-55={!collapsed}
class:w-14={collapsed}
>
<!-- Sidebar header -->
<div class="flex items-center border-b border-sidebar-border px-3 py-4">
{#if !collapsed}
<!-- Sidebar header: same height as the topbar so the borders align; the
home link fills the entire row, padding included -->
<div class="flex h-14 shrink-0 items-stretch border-b border-sidebar-border">
<a
href={resolve('/weather/week')}
class="flex items-center gap-2.5 px-1"
class="flex flex-1 items-center gap-2.5 transition-colors hover:bg-sidebar-accent {collapsed
? 'justify-center'
: 'px-4'}"
onclick={onMobileClose}
aria-label="OMbrella home"
>
<div
class="flex h-8 w-8 shrink-0 items-center justify-center rounded-lg bg-primary text-primary-foreground"
@@ -77,32 +80,12 @@
/>
</svg>
</div>
{#if !collapsed}
<span class="text-sm font-semibold whitespace-nowrap text-sidebar-foreground">
Open-Meteo
OMbrella
</span>
</a>
{:else}
<a
href={resolve('/weather/week')}
class="mx-auto flex h-8 w-8 items-center justify-center rounded-lg bg-primary text-primary-foreground"
onclick={onMobileClose}
aria-label="Open-Meteo Home"
>
<svg
class="h-4.5 w-4.5"
fill="none"
stroke="currentColor"
viewBox="0 0 24 24"
stroke-width="2"
>
<path
stroke-linecap="round"
stroke-linejoin="round"
d="M3 15a4 4 0 004 4h9a5 5 0 10-.1-9.999 5.002 5.002 0 10-9.78 2.096A4.001 4.001 0 003 15z"
/>
</svg>
</a>
{/if}
</a>
</div>
<!-- Navigation links -->
+14 -14
View File
@@ -13,7 +13,7 @@
import { Unit } from '@openmeteo/sdk/unit';
import { fetchWeatherApi } from 'openmeteo';
import { buildDaylightMarkAreas } from '$lib/utils/echarts';
import { type DaylightBand, buildDaylightBands } from '$lib/charts/bands';
import type { VariableWithValues } from '@openmeteo/sdk/variable-with-values';
import type { VariablesWithTime } from '@openmeteo/sdk/variables-with-time';
@@ -157,7 +157,7 @@ export interface WeatherUnitParams {
precipitation_unit?: 'mm' | 'inch';
}
export type MarkArea = [{ xAxis: number; itemStyle: { color: string } }, { xAxis: number }];
export type { DaylightBand };
// ─── Week Forecast Types ────────────────────────────────────────────────────────
@@ -201,7 +201,7 @@ export interface WeekForecastResult {
hourlyTimestamps: number[];
hourlyDates: Date[];
dailyDates: Date[];
markAreas: MarkArea[];
daylightBands: DaylightBand[];
}
// ─── Model Comparison Types ─────────────────────────────────────────────────────
@@ -221,7 +221,7 @@ export interface ModelCompareResult {
timestamps: number[];
utcOffsetSeconds: number;
timezone: string;
markAreas: MarkArea[];
daylightBands: DaylightBand[];
sunrise: number[];
sunset: number[];
units: Record<string, string>;
@@ -251,7 +251,7 @@ export interface EnsembleForecastResult {
timestamps: number[];
utcOffsetSeconds: number;
timezone: string;
markAreas: MarkArea[];
daylightBands: DaylightBand[];
/** Flat record compatible with existing chart utilities (keys like "temperature_2m_member00") */
hourlyFlat: Record<string, number[]>;
hourlyUnitsFlat: Record<string, string>;
@@ -360,7 +360,7 @@ export async function fetchWeekForecast(params: WeekForecastParams): Promise<Wee
winddirection_10m_dominant: getValues(dailyBlock.variables(9)!)
};
const markAreas = buildDaylightMarkAreas(daily.sunrise, daily.sunset);
const daylightBands = buildDaylightBands(daily.sunrise, daily.sunset);
return {
hourly,
@@ -370,7 +370,7 @@ export async function fetchWeekForecast(params: WeekForecastParams): Promise<Wee
hourlyTimestamps,
hourlyDates,
dailyDates,
markAreas
daylightBands
};
}
@@ -409,7 +409,7 @@ export async function fetchModelComparison(
const timestamps = getTimestamps(hourlyBlock);
// Extract sunrise/sunset from the first response's daily block
let markAreas: MarkArea[] = [];
let daylightBands: DaylightBand[] = [];
let sunrise: number[] = [];
let sunset: number[] = [];
const dailyBlock = firstResponse.daily();
@@ -418,7 +418,7 @@ export async function fetchModelComparison(
const sunsetVar = dailyBlock.variables(1)!;
sunrise = getInt64Values(sunriseVar);
sunset = getInt64Values(sunsetVar);
markAreas = buildDaylightMarkAreas(sunrise, sunset);
daylightBands = buildDaylightBands(sunrise, sunset);
}
// Process each model's response
@@ -474,7 +474,7 @@ export async function fetchModelComparison(
timestamps,
utcOffsetSeconds,
timezone,
markAreas,
daylightBands,
sunrise,
sunset,
units,
@@ -531,15 +531,15 @@ export async function fetchEnsembleForecast(
const timestamps = getTimestamps(hourlyBlock);
const timeLength = timestamps.length;
// Extract sunrise/sunset for mark areas
let markAreas: MarkArea[] = [];
// Extract sunrise/sunset for daylight bands
let daylightBands: DaylightBand[] = [];
if (dailyResponses.length > 0) {
const dailyResponse = dailyResponses[0];
const dailyBlock = dailyResponse.daily();
if (dailyBlock) {
const sunrise = getInt64Values(dailyBlock.variables(0)!);
const sunset = getInt64Values(dailyBlock.variables(1)!);
markAreas = buildDaylightMarkAreas(sunrise, sunset);
daylightBands = buildDaylightBands(sunrise, sunset);
}
}
@@ -629,7 +629,7 @@ export async function fetchEnsembleForecast(
timestamps,
utcOffsetSeconds,
timezone,
markAreas,
daylightBands,
hourlyFlat,
hourlyUnitsFlat
};
-321
View File
@@ -1,321 +0,0 @@
/**
* ECharts Download Utilities
*
* Provides programmatic chart export functionality for downloading
* charts as PNG or SVG images. Supports stitching multiple chart
* instances into a single combined meteogram image.
*/
import type * as echarts from 'echarts';
// ─── Types ───────────────────────────────────────────────────────────────────
export type ExportFormat = 'png' | 'svg';
export interface DownloadOptions {
/** The file name (without extension) */
fileName?: string;
/** Export format: 'png' or 'svg' */
format?: ExportFormat;
/** Pixel ratio for PNG exports (default: 2 for retina quality) */
pixelRatio?: number;
/** Background color (default: '#ffffff' for PNG, 'none' for SVG) */
backgroundColor?: string;
/** Components to exclude from the export (e.g. ['toolbox']) */
excludeComponents?: string[];
}
// ─── Defaults ────────────────────────────────────────────────────────────────
const DEFAULT_FILE_NAME = 'open-meteo-chart';
const DEFAULT_PIXEL_RATIO = 2;
// ─── Download Functions ──────────────────────────────────────────────────────
/**
* Downloads a single ECharts instance as an image file.
*
* @param chart - The ECharts instance to export
* @param options - Download configuration options
*/
export function downloadChart(chart: echarts.ECharts, options: DownloadOptions = {}): void {
const {
fileName = DEFAULT_FILE_NAME,
format = 'png',
pixelRatio = DEFAULT_PIXEL_RATIO,
backgroundColor,
excludeComponents = ['toolbox']
} = options;
const resolvedBg = backgroundColor ?? (format === 'svg' ? 'none' : '#ffffff');
const dataUrl = chart.getDataURL({
type: format === 'svg' ? 'svg' : 'png',
pixelRatio: format === 'png' ? pixelRatio : 1,
backgroundColor: resolvedBg,
excludeComponents
});
triggerDownload(dataUrl, `${fileName}.${format}`);
}
/**
* Downloads multiple ECharts instances stitched into a single combined
* meteogram image. Charts are stacked vertically in the order provided.
*
* For a single chart, delegates to `downloadChart`.
*
* @param charts - Array of ECharts instances to combine
* @param options - Download configuration options
*/
export function downloadMeteogram(charts: echarts.ECharts[], options: DownloadOptions = {}): void {
const validCharts = charts.filter((c) => c && !c.isDisposed());
if (validCharts.length === 0) return;
if (validCharts.length === 1) {
downloadChart(validCharts[0], options);
return;
}
const {
fileName = DEFAULT_FILE_NAME,
format = 'png',
pixelRatio = DEFAULT_PIXEL_RATIO,
backgroundColor,
excludeComponents = ['toolbox']
} = options;
const resolvedBg = backgroundColor ?? (format === 'svg' ? 'none' : '#ffffff');
if (format === 'svg') {
downloadMeteogramSvg(validCharts, {
fileName,
backgroundColor: resolvedBg,
excludeComponents
});
return;
}
downloadMeteogramPng(validCharts, {
fileName,
pixelRatio,
backgroundColor: resolvedBg,
excludeComponents
});
}
/**
* Returns the data URL of a chart without triggering a download.
* Useful for previewing or embedding chart images programmatically.
*
* @param chart - The ECharts instance to export
* @param options - Export configuration options
* @returns A base64-encoded data URL string
*/
export function getChartDataUrl(chart: echarts.ECharts, options: DownloadOptions = {}): string {
const {
format = 'png',
pixelRatio = DEFAULT_PIXEL_RATIO,
backgroundColor,
excludeComponents = ['toolbox']
} = options;
const resolvedBg = backgroundColor ?? (format === 'svg' ? 'none' : '#ffffff');
return chart.getDataURL({
type: format === 'svg' ? 'svg' : 'png',
pixelRatio: format === 'png' ? pixelRatio : 1,
backgroundColor: resolvedBg,
excludeComponents
});
}
// ─── Internal: PNG Meteogram ─────────────────────────────────────────────────
interface PngStitchOptions {
fileName: string;
pixelRatio: number;
backgroundColor: string;
excludeComponents: string[];
}
/**
* Stitches multiple charts into a single PNG by rendering each chart's
* data URL onto an off-screen canvas, stacked vertically.
*/
function downloadMeteogramPng(charts: echarts.ECharts[], opts: PngStitchOptions): void {
const { fileName, pixelRatio, backgroundColor, excludeComponents } = opts;
const dataUrls = charts.map((chart) =>
chart.getDataURL({
type: 'png',
pixelRatio,
backgroundColor: 'transparent',
excludeComponents
})
);
const images: HTMLImageElement[] = [];
let loadedCount = 0;
dataUrls.forEach((url, index) => {
const img = new Image();
images[index] = img;
img.onload = () => {
loadedCount++;
if (loadedCount === dataUrls.length) {
composePngAndDownload(images, fileName, backgroundColor);
}
};
img.onerror = () => {
loadedCount++;
if (loadedCount === dataUrls.length) {
composePngAndDownload(images, fileName, backgroundColor);
}
};
img.src = url;
});
}
function composePngAndDownload(
images: HTMLImageElement[],
fileName: string,
backgroundColor: string
): void {
const validImages = images.filter((img) => img.naturalWidth > 0);
if (validImages.length === 0) return;
const maxWidth = Math.max(...validImages.map((img) => img.naturalWidth));
const totalHeight = validImages.reduce((sum, img) => sum + img.naturalHeight, 0);
const canvas = document.createElement('canvas');
canvas.width = maxWidth;
canvas.height = totalHeight;
const ctx = canvas.getContext('2d');
if (!ctx) return;
if (backgroundColor && backgroundColor !== 'transparent' && backgroundColor !== 'none') {
ctx.fillStyle = backgroundColor;
ctx.fillRect(0, 0, maxWidth, totalHeight);
}
let y = 0;
for (const img of validImages) {
ctx.drawImage(img, 0, y);
y += img.naturalHeight;
}
const dataUrl = canvas.toDataURL('image/png');
triggerDownload(dataUrl, `${fileName}.png`);
}
// ─── Internal: SVG Meteogram ─────────────────────────────────────────────────
interface SvgStitchOptions {
fileName: string;
backgroundColor: string;
excludeComponents: string[];
}
/**
* Stitches multiple charts into a single SVG by extracting each chart's
* SVG markup and embedding them as nested groups with vertical offsets.
*/
function downloadMeteogramSvg(charts: echarts.ECharts[], opts: SvgStitchOptions): void {
const { fileName, backgroundColor, excludeComponents } = opts;
const svgStrings = charts.map((chart) =>
chart.getDataURL({
type: 'svg',
pixelRatio: 1,
backgroundColor: 'transparent',
excludeComponents
})
);
const parser = new DOMParser();
const fragments: { svg: SVGSVGElement; width: number; height: number }[] = [];
for (const svgDataUrl of svgStrings) {
const svgContent = decodeSvgDataUrl(svgDataUrl);
if (!svgContent) continue;
const doc = parser.parseFromString(svgContent, 'image/svg+xml');
const svg = doc.querySelector('svg');
if (!svg) continue;
const width = parseFloat(svg.getAttribute('width') || '0');
const height = parseFloat(svg.getAttribute('height') || '0');
if (width > 0 && height > 0) {
fragments.push({ svg, width, height });
}
}
if (fragments.length === 0) return;
const maxWidth = Math.max(...fragments.map((f) => f.width));
const totalHeight = fragments.reduce((sum, f) => sum + f.height, 0);
let combinedSvg = `<svg xmlns="http://www.w3.org/2000/svg" width="${maxWidth}" height="${totalHeight}" viewBox="0 0 ${maxWidth} ${totalHeight}">`;
if (backgroundColor && backgroundColor !== 'none' && backgroundColor !== 'transparent') {
combinedSvg += `<rect width="${maxWidth}" height="${totalHeight}" fill="${backgroundColor}"/>`;
}
let yOffset = 0;
for (const fragment of fragments) {
combinedSvg += `<g transform="translate(0,${yOffset})">`;
combinedSvg += fragment.svg.innerHTML;
combinedSvg += `</g>`;
yOffset += fragment.height;
}
combinedSvg += `</svg>`;
const blob = new Blob([combinedSvg], { type: 'image/svg+xml;charset=utf-8' });
const url = URL.createObjectURL(blob);
triggerDownload(url, `${fileName}.svg`);
setTimeout(() => URL.revokeObjectURL(url), 10000);
}
function decodeSvgDataUrl(dataUrl: string): string | null {
try {
if (dataUrl.startsWith('data:image/svg+xml;charset=UTF-8,')) {
return decodeURIComponent(dataUrl.slice('data:image/svg+xml;charset=UTF-8,'.length));
}
if (dataUrl.startsWith('data:image/svg+xml;base64,')) {
return atob(dataUrl.slice('data:image/svg+xml;base64,'.length));
}
if (dataUrl.startsWith('data:image/svg+xml,')) {
return decodeURIComponent(dataUrl.slice('data:image/svg+xml,'.length));
}
return null;
} catch {
return null;
}
}
// ─── Internal Helpers ────────────────────────────────────────────────────────
/**
* Triggers a browser file download from a data URL or object URL.
* Creates a temporary anchor element, clicks it, and removes it.
*/
function triggerDownload(url: string, fileName: string): void {
const link = document.createElement('a');
link.href = url;
link.download = fileName;
link.style.display = 'none';
document.body.appendChild(link);
link.click();
requestAnimationFrame(() => {
document.body.removeChild(link);
});
}
-71
View File
@@ -1,71 +0,0 @@
/**
* ECharts Utilities — Barrel Export
*
* Re-exports all ECharts-related utilities from a single entry point.
*
* Usage:
* import { getThemeColors, composeChartOption, buildModelSeries, downloadChart } from '$lib/utils/echarts';
*/
// Theme: dark/light detection, color palettes, theme color accessors
export {
SERIES_COLORS,
CHART_COLORS,
isDarkMode,
getThemeColors,
getTextColor,
getAxisLineColor,
getSplitLineColor
} from './theme';
export type { ThemeColors } from './theme';
// Option builders: grid, title, tooltip, legend, axes, toolbox, full composer
export {
buildGrid,
buildTitle,
buildTooltip,
buildLegend,
buildTimeXAxis,
buildValueYAxis,
buildCreditGraphic,
buildToolbox,
composeChartOption,
isColumnUnit
} from './options';
export type {
GridOptions,
TitleOptions,
LegendOptions,
TooltipOptions,
AxisOptions,
CreditOptions,
BuildGridParams,
ToolboxOptions,
ChartOptionParams
} from './options';
// Series builders: model lines, averages, time markers, daylight bands, ensemble spread
export {
buildModelSeries,
buildAverageSeries,
buildCurrentTimeSeries,
buildDaylightMarkAreas,
buildDaylightSeries,
buildSpreadSeries,
calculateAverage,
calculateSpread,
findUnit
} from './series';
export type {
ModelSeriesParams,
AverageSeriesParams,
CurrentTimeSeriesParams,
DaylightSeriesParams,
SpreadSeriesParams,
AverageResult,
SpreadResult
} from './series';
// Download: export charts as PNG or SVG
export { downloadChart, downloadMeteogram, getChartDataUrl } from './download';
export type { ExportFormat, DownloadOptions } from './download';
-435
View File
@@ -1,435 +0,0 @@
/**
* ECharts Option Builders
*
* Shared factory functions for constructing common ECharts option fragments.
* These builders ensure visual consistency across all chart pages and reduce
* boilerplate in page-level components.
*/
import { formatZoned } from '../date';
import { getThemeColors } from './theme';
import type { ThemeColors } from './theme';
// ─── Types ───────────────────────────────────────────────────────────────────
export interface GridOptions {
left?: number;
right?: number;
top?: number;
bottom?: number;
}
export interface TitleOptions {
text: string;
subtext?: string;
}
export interface LegendOptions {
show: boolean;
data?: string[];
}
export interface TooltipOptions {
unit: string;
timezone?: string;
}
export interface AxisOptions {
unit?: string;
}
export interface CreditOptions {
show: boolean;
}
// ─── Default Constants ───────────────────────────────────────────────────────
const DEFAULT_GRID: GridOptions = {
left: 60,
right: 16,
top: 40,
bottom: 40
};
const GRID_WITH_TITLE: Partial<GridOptions> = {
top: 80
};
const GRID_WITH_LEGEND: Partial<GridOptions> = {
bottom: 60
};
// ─── Grid ────────────────────────────────────────────────────────────────────
export interface BuildGridParams {
hasTitle?: boolean;
hasSubtitle?: boolean;
showLegend?: boolean;
overrides?: Partial<GridOptions>;
}
/**
* Builds a grid configuration with sensible defaults.
* Automatically adjusts top/bottom spacing for title and legend presence.
*/
export function buildGrid(params: BuildGridParams = {}): GridOptions {
const { hasTitle = false, hasSubtitle = false, showLegend = false, overrides } = params;
return {
...DEFAULT_GRID,
...(hasTitle ? GRID_WITH_TITLE : {}),
...(hasSubtitle ? { top: 90 } : {}),
...(showLegend ? GRID_WITH_LEGEND : {}),
...overrides
};
}
// ─── Title ───────────────────────────────────────────────────────────────────
/**
* Builds a title configuration. Pass `null` to hide the title.
*/
export function buildTitle(
options: TitleOptions | null,
colors?: ThemeColors
): Record<string, unknown> {
const c = colors ?? getThemeColors();
if (!options) {
return { title: { show: false } };
}
const result: Record<string, unknown> = {
text: options.text,
left: 'left',
textStyle: {
fontWeight: 'normal',
fontSize: 16,
color: c.text
}
};
if (options.subtext) {
result.subtext = options.subtext;
result.subtextStyle = {
fontWeight: 'normal',
fontSize: 12,
color: c.textMuted
};
}
return result;
}
// ─── Tooltip ─────────────────────────────────────────────────────────────────
/**
* Builds a tooltip with cross-axis pointer and unit-aware value formatting.
*/
export function buildTooltip(
options: TooltipOptions,
colors?: ThemeColors
): Record<string, unknown> {
const c = colors ?? getThemeColors();
const { unit, timezone } = options;
return {
trigger: 'axis',
axisPointer: {
type: 'cross',
animation: false,
label: {
backgroundColor: c.tooltipBg,
color: c.text,
borderColor: c.tooltipBorder,
borderWidth: 1,
formatter: timezone
? (params: { axisDimension: string; value: number }) => {
if (params.axisDimension === 'x') {
return formatZoned(new Date(params.value), timezone, 'EEE d MMM HH:mm');
}
return params.value.toFixed(1);
}
: undefined
}
},
backgroundColor: c.tooltipBg,
borderColor: c.tooltipBorder,
textStyle: {
color: c.text
},
formatter: timezone
? (
params: Array<{
axisValue: number;
seriesName: string;
marker: string;
value: number | number[] | null;
}>
) => {
if (!params || params.length === 0) return '';
const date = new Date(params[0].axisValue);
let html = `<b>${formatZoned(date, timezone, 'EEE d MMM HH:mm')}</b><br/>`;
params.forEach((item) => {
if (item.seriesName === 'Daylight' || item.seriesName === 'Current Time') return;
const val = Array.isArray(item.value) ? item.value[1] : item.value;
if (val === null || val === undefined) return;
html += `${item.marker} ${item.seriesName}: <b>${val.toFixed(1)} ${unit}</b><br/>`;
});
return html;
}
: undefined,
valueFormatter: (value: number) => {
if (value === null || value === undefined) return '-';
return value.toFixed(1) + ' ' + unit;
}
};
}
// ─── Legend ───────────────────────────────────────────────────────────────────
/**
* Builds a scrollable legend configuration pinned to the bottom.
*/
export function buildLegend(options: LegendOptions, colors?: ThemeColors): Record<string, unknown> {
const c = colors ?? getThemeColors();
return {
show: options.show,
bottom: 0,
type: 'scroll',
...(options.data ? { data: options.data } : {}),
textStyle: {
color: c.text
},
pageTextStyle: {
color: c.text
}
};
}
// ─── X Axis (Time) ───────────────────────────────────────────────────────────
/**
* Builds a time-based X axis with theme-aware styling and timezone-aware labels.
*/
export function buildTimeXAxis(timezone?: string, colors?: ThemeColors): Record<string, unknown> {
const c = colors ?? getThemeColors();
return {
type: 'time',
splitLine: {
show: false
},
axisLine: {
lineStyle: {
color: c.axisLine
}
},
axisPointer: {
label: {
formatter: timezone
? (params: { value: number }) =>
formatZoned(new Date(params.value), timezone, 'EEE d MMM HH:mm')
: undefined
}
},
axisLabel: {
color: c.text,
hideOverlap: true,
formatter: timezone
? (value: number) => formatZoned(new Date(value), timezone, 'HH:mm')
: undefined
},
axisTick: {
lineStyle: {
color: c.axisLine
}
}
};
}
// ─── Y Axis (Value) ─────────────────────────────────────────────────────────
/**
* Builds a value-based Y axis with optional unit label.
*/
export function buildValueYAxis(
options: AxisOptions = {},
colors?: ThemeColors
): Record<string, unknown> {
const c = colors ?? getThemeColors();
return {
type: 'value',
...(options.unit ? { name: options.unit } : {}),
nameTextStyle: {
color: c.text,
padding: [0, 0, 0, 4]
},
axisLine: {
show: false
},
axisLabel: {
color: c.text
},
splitLine: {
lineStyle: {
color: c.splitLine
}
}
};
}
// ─── Credit Watermark ────────────────────────────────────────────────────────
/**
* Builds the Open-Meteo.com credit watermark graphic element.
*/
export function buildCreditGraphic(colors?: ThemeColors): Record<string, unknown>[] {
const c = colors ?? getThemeColors();
return [
{
type: 'text',
right: 10,
bottom: 5,
style: {
text: 'Open-Meteo.com',
fontSize: 10,
fill: c.text,
opacity: 0.4
},
onclick: function () {
window.open('https://open-meteo.com', '_blank');
},
cursor: 'pointer'
}
];
}
// ─── Toolbox (Download) ─────────────────────────────────────────────────────
export interface ToolboxOptions {
/** Show the save-as-image button */
saveAsImage?: boolean;
/** File name prefix for downloaded images */
fileName?: string;
/** Export format: 'png' or 'svg' */
format?: 'png' | 'svg';
}
/**
* Builds the ECharts toolbox with download functionality.
*/
export function buildToolbox(
options: ToolboxOptions = {},
colors?: ThemeColors
): Record<string, unknown> {
const c = colors ?? getThemeColors();
const { saveAsImage = true, fileName = 'open-meteo-chart', format = 'png' } = options;
return {
show: true,
right: 16,
top: 4,
iconStyle: {
borderColor: c.textMuted
},
emphasis: {
iconStyle: {
borderColor: c.text
}
},
feature: {
...(saveAsImage
? {
saveAsImage: {
type: format,
name: fileName,
title: format === 'svg' ? 'Save as SVG' : 'Save as PNG',
pixelRatio: 2,
backgroundColor: 'transparent',
excludeComponents: ['toolbox'],
iconStyle: {
borderColor: c.textMuted
},
emphasis: {
iconStyle: {
borderColor: c.text
}
}
}
}
: {})
}
};
}
// ─── Full Option Composer ────────────────────────────────────────────────────
export interface ChartOptionParams {
title?: TitleOptions | null;
tooltip: TooltipOptions;
legend?: LegendOptions;
grid?: BuildGridParams;
yAxis?: AxisOptions;
series: Array<Record<string, unknown>>;
toolbox?: ToolboxOptions | false;
showCredit?: boolean;
colors?: ThemeColors;
timezone?: string;
}
/**
* Composes a complete ECharts option object from individual builder params.
* This is the primary entry point for building chart options — it calls all
* the individual builders and merges the results into a single config object.
*/
export function composeChartOption(params: ChartOptionParams): Record<string, unknown> {
const colors = params.colors ?? getThemeColors();
const hasTitle = params.title != null && params.title.text !== '';
const showLegend = params.legend?.show ?? false;
const option: Record<string, unknown> = {
title: buildTitle(params.title ?? null, colors),
tooltip: buildTooltip(params.tooltip, colors),
legend: buildLegend(params.legend ?? { show: false }, colors),
grid: buildGrid({
...params.grid,
hasTitle,
hasSubtitle: hasTitle && !!params.title?.subtext,
showLegend
}),
xAxis: buildTimeXAxis(params.timezone, colors),
yAxis: buildValueYAxis(params.yAxis, colors),
series: params.series,
textStyle: {
color: colors.text
}
};
// Add toolbox unless explicitly disabled
if (params.toolbox !== false) {
option.toolbox = buildToolbox(params.toolbox ?? {}, colors);
}
// Add credit watermark
if (params.showCredit) {
option.graphic = buildCreditGraphic(colors);
}
return option;
}
// ─── Utility: Detect column-type variables ───────────────────────────────────
/** Units that should be rendered as bar/column charts instead of lines. */
const COLUMN_UNITS = new Set(['mm', 'cm', 'inch', 'MJ/m²']);
/**
* Returns true if the given unit should be rendered as a bar chart.
*/
export function isColumnUnit(unit: string): boolean {
return COLUMN_UNITS.has(unit);
}
-349
View File
@@ -1,349 +0,0 @@
/**
* ECharts Series Builders
*
* Factory functions for constructing common series patterns used across
* weather chart visualizations. These builders encapsulate the styling
* and configuration details so page-level code only needs to provide data.
*/
import { isColumnUnit } from './options';
import { CHART_COLORS } from './theme';
// ─── Types ───────────────────────────────────────────────────────────────────
export interface ModelSeriesParams {
/** The series name (typically the model key from the API response) */
name: string;
/** Array of [timestamp, value] data points */
data: Array<[number, number | null]>;
/** The unit string, used to determine bar vs line rendering */
unit: string;
/** Optional line width override (default: 2) */
lineWidth?: number;
}
export interface AverageSeriesParams {
/** The variable name, used to construct the series name */
variable: string;
/** Array of [timestamp, value] data points */
data: Array<[number, number]>;
/** The unit string, used to determine bar vs line rendering */
unit: string;
}
export interface CurrentTimeSeriesParams {
/** UTC offset in seconds from the API response */
utcOffsetSeconds: number;
}
export interface DaylightSeriesParams {
/** Array of mark area pairs: [[start, end], [start, end], ...] */
markAreas: Array<[{ xAxis: number; itemStyle: { color: string } }, { xAxis: number }]>;
}
export interface SpreadSeriesParams {
/** The variable name, used to construct series names */
variable: string;
/** Array of [timestamp, min, max] data points */
spreadData: Array<[number, number, number]>;
/** Optional color for the spread area (default: theme spread color) */
color?: string;
}
export interface MarkAreaEntry {
xAxis: number;
itemStyle?: { color: string };
}
// ─── Model Series ────────────────────────────────────────────────────────────
/**
* Builds a single model series (line or bar depending on the unit).
* Used on the Model Comparison page where each weather model gets its own series.
*/
export function buildModelSeries(params: ModelSeriesParams): Record<string, unknown> {
const { name, data, unit, lineWidth = 2 } = params;
const isColumn = isColumnUnit(unit);
return {
name,
type: isColumn ? 'bar' : 'line',
data,
smooth: !isColumn,
showSymbol: false,
lineStyle: {
width: lineWidth
},
emphasis: {
lineStyle: {
width: lineWidth + 1
}
},
barMaxWidth: 5
};
}
// ─── Average Series ──────────────────────────────────────────────────────────
/**
* Builds the ensemble/model average series.
* Rendered as a dashed line (or bar) that stands out from individual model lines.
*/
export function buildAverageSeries(params: AverageSeriesParams): Record<string, unknown> {
const { variable, data, unit } = params;
const isColumn = isColumnUnit(unit);
return {
name: variable + '_average',
type: isColumn ? 'bar' : 'line',
data,
smooth: !isColumn,
showSymbol: false,
lineStyle: {
type: 'dashed',
width: 4,
color: CHART_COLORS.average
},
itemStyle: {
color: CHART_COLORS.average
},
emphasis: {
lineStyle: {
width: 6
}
},
barMaxWidth: 5,
z: 10
};
}
// ─── Current Time Marker ─────────────────────────────────────────────────────
/**
* Builds a helper series that renders a vertical red line at the current time.
* Uses an empty data series with a markLine to overlay onto the chart.
*/
export function buildCurrentTimeSeries(): Record<string, unknown> {
return {
name: 'Current Time',
type: 'line',
data: [],
markLine: {
silent: true,
symbol: 'none',
data: [
{
xAxis: Date.now(),
lineStyle: {
color: CHART_COLORS.currentTimeLine,
width: 2,
type: 'solid'
},
label: {
show: false
}
}
]
}
};
}
// ─── Daylight Bands ──────────────────────────────────────────────────────────
/**
* Builds mark area entries from sunrise/sunset arrays.
* Each entry is a pair of axis markers that ECharts renders as a shaded band.
*
* @param sunrise - Array of sunrise timestamps (unix seconds, without UTC offset)
* @param sunset - Array of sunset timestamps (unix seconds, without UTC offset)
* @param utcOffsetSeconds - UTC offset to apply (from the API response)
*/
export function buildDaylightMarkAreas(
sunrise: number[],
sunset: number[]
): Array<[{ xAxis: number; itemStyle: { color: string } }, { xAxis: number }]> {
return sunrise.map((r: number, i: number) => [
{
xAxis: r * 1000,
itemStyle: {
color: CHART_COLORS.daylight
}
},
{
xAxis: sunset[i] * 1000
}
]);
}
/**
* Builds a helper series that renders day/night shading bands via markArea.
* Returns null if no mark areas are provided (so callers can filter it out).
*/
export function buildDaylightSeries(params: DaylightSeriesParams): Record<string, unknown> | null {
if (params.markAreas.length === 0) return null;
return {
name: 'Daylight',
type: 'line',
data: [],
markArea: {
silent: true,
data: params.markAreas
}
};
}
// ─── Ensemble Spread (Min/Max Area) ──────────────────────────────────────────
/**
* Builds a pair of stacked area series that visualize the ensemble spread
* (min-to-max range). The lower bound is rendered invisibly and the upper
* bound delta is stacked on top with a translucent fill.
*
* Returns an array of two series that should be spread into the series list.
*/
export function buildSpreadSeries(params: SpreadSeriesParams): Array<Record<string, unknown>> {
const { variable, spreadData, color = CHART_COLORS.spreadArea } = params;
const lowerBound: Record<string, unknown> = {
name: variable + '_spread_lower',
type: 'line',
data: spreadData.map((d) => [d[0], d[1]]),
areaStyle: {
color,
origin: 'auto'
},
lineStyle: {
width: 0
},
showSymbol: false,
stack: 'spread_' + variable,
smooth: true,
z: 1,
silent: true
};
const upperDelta: Record<string, unknown> = {
name: variable + '_spread_upper',
type: 'line',
data: spreadData.map((d) => [d[0], d[2] - d[1]]),
areaStyle: {
color,
origin: 'auto'
},
lineStyle: {
width: 0
},
showSymbol: false,
stack: 'spread_' + variable,
smooth: true,
z: 1,
silent: true
};
return [lowerBound, upperDelta];
}
// ─── Data Processing Helpers ─────────────────────────────────────────────────
export interface AverageResult {
average: number[];
averageCount: number[];
}
export interface SpreadResult {
minValues: (number | undefined)[];
maxValues: (number | undefined)[];
}
/**
* Calculates per-timestep average and count from hourly model data.
* Shared between the Model Compare and 14-Day Forecast pages.
*
* @param hourlyData - The `data.hourly` object from the API response
* @param variable - The variable prefix to filter on (e.g. 'temperature_2m')
* @param timeLength - Number of timesteps
* @returns Object containing running average and count arrays
*/
export function calculateAverage(
hourlyData: Record<string, unknown>,
variable: string,
timeLength: number
): AverageResult {
const average = new Array<number>(timeLength).fill(0);
const averageCount = new Array<number>(timeLength).fill(0);
for (const [model, values] of Object.entries(hourlyData)) {
if (model === 'time') continue;
if (!model.startsWith(variable)) continue;
for (const [index, val] of (values as number[]).entries()) {
if (val !== null && val !== undefined && isFinite(val)) {
average[index] += val;
averageCount[index]++;
}
}
}
// Finalize average values
for (let i = 0; i < timeLength; i++) {
if (averageCount[i] > 0) {
average[i] = Math.round((average[i] / averageCount[i]) * 10) / 10;
}
}
return { average, averageCount };
}
/**
* Calculates per-timestep min and max values from hourly ensemble data.
* Used by the 14-Day Forecast page to render the ensemble spread.
*
* @param hourlyData - The `data.hourly` object from the API response
* @param variable - The variable prefix to filter on
* @param timeLength - Number of timesteps
* @returns Object containing min and max value arrays
*/
export function calculateSpread(
hourlyData: Record<string, unknown>,
variable: string,
timeLength: number
): SpreadResult {
const minValues = new Array<number | undefined>(timeLength).fill(undefined);
const maxValues = new Array<number | undefined>(timeLength).fill(undefined);
for (const [model, values] of Object.entries(hourlyData)) {
if (model === 'time') continue;
if (!model.startsWith(variable)) continue;
for (const [index, val] of (values as number[]).entries()) {
if (val !== null && val !== undefined) {
if (minValues[index] === undefined || val < minValues[index]!) {
minValues[index] = val;
}
if (maxValues[index] === undefined || val > maxValues[index]!) {
maxValues[index] = val;
}
}
}
}
return { minValues, maxValues };
}
/**
* Finds the unit string for a given variable from the hourly_units map.
* Returns an empty string if the variable is not found.
*/
export function findUnit(
hourlyUnits: Record<string, string>,
hourlyData: Record<string, unknown>,
variable: string
): string {
for (const model of Object.keys(hourlyData)) {
if (model === 'time') continue;
if (model.startsWith(variable) && hourlyUnits[model]) {
return hourlyUnits[model];
}
}
return '';
}
-106
View File
@@ -1,106 +0,0 @@
/**
* ECharts Theme Utilities
*
* Centralized dark/light mode detection and color helpers for consistent
* chart theming across all ECharts visualizations.
*/
// ─── Color Palette ───────────────────────────────────────────────────────────
/** Default series color palette matching the application's design system */
export const SERIES_COLORS = [
'#5470c6',
'#91cc75',
'#fac858',
'#ee6666',
'#73c0de',
'#3ba272',
'#fc8452',
'#9a60b4',
'#ea7ccc',
'#4dc9f6'
] as const;
/** Semantic colors used for specific chart elements */
export const CHART_COLORS = {
average: '#5e5e5e',
currentTimeLine: '#ef4444',
daylight: 'rgba(255, 255, 194, 0.3)',
spreadArea: 'rgba(173, 216, 230, 0.3)',
creditText: { light: '#374151', dark: '#e5e7eb' }
} as const;
// ─── Dark Mode Detection ─────────────────────────────────────────────────────
/**
* Detects whether the application is currently in dark mode.
* Checks multiple sources: HTML class, data-theme attribute, and media query.
*/
export function isDarkMode(): boolean {
if (typeof document === 'undefined') return false;
const html = document.documentElement;
const dataTheme = html.getAttribute('data-theme');
// Explicit data-theme takes priority
if (dataTheme === 'dark') return true;
if (dataTheme === 'light') return false;
// Check for dark class (e.g. Tailwind dark mode)
if (html.classList.contains('dark')) return true;
// Fall back to system preference
return window.matchMedia?.('(prefers-color-scheme: dark)').matches ?? false;
}
// ─── Theme Colors ────────────────────────────────────────────────────────────
export interface ThemeColors {
text: string;
textMuted: string;
axisLine: string;
splitLine: string;
background: string;
tooltipBg: string;
tooltipBorder: string;
}
const LIGHT_COLORS: ThemeColors = {
text: '#374151',
textMuted: 'rgba(55, 65, 81, 0.6)',
axisLine: 'rgba(55, 65, 81, 0.3)',
splitLine: 'rgba(55, 65, 81, 0.1)',
background: 'transparent',
tooltipBg: '#ffffff',
tooltipBorder: '#e5e7eb'
};
const DARK_COLORS: ThemeColors = {
text: '#e5e7eb',
textMuted: 'rgba(229, 231, 235, 0.6)',
axisLine: 'rgba(229, 231, 235, 0.3)',
splitLine: 'rgba(229, 231, 235, 0.1)',
background: 'transparent',
tooltipBg: '#1f2937',
tooltipBorder: '#374151'
};
/**
* Returns the full set of theme colors based on current dark/light mode.
*/
export function getThemeColors(): ThemeColors {
return isDarkMode() ? DARK_COLORS : LIGHT_COLORS;
}
/** Shorthand helpers kept for backward compatibility and convenience */
export function getTextColor(): string {
return getThemeColors().text;
}
export function getAxisLineColor(): string {
return getThemeColors().axisLine;
}
export function getSplitLineColor(): string {
return getThemeColors().splitLine;
}
+7
View File
@@ -63,7 +63,14 @@
<main
class={fullBleed ? 'flex-1 overflow-hidden' : 'flex-1 overflow-y-auto p-5 md:px-8 md:py-6'}
>
{#if fullBleed}
{@render children()}
{:else}
<!-- cap the content width on very large screens -->
<div class="mx-auto w-full max-w-[1536px]">
{@render children()}
</div>
{/if}
</main>
</div>
</div>
+1 -1
View File
@@ -1,3 +1,3 @@
<svelte:head>
<title>Open-Meteo Weather</title>
<title>OMbrella</title>
</svelte:head>
+1 -1
View File
@@ -8,6 +8,6 @@ describe('/+page.svelte', () => {
render(Page);
const title = document.querySelector('title');
expect(title?.textContent).toBe('Open-Meteo Weather');
expect(title?.textContent).toBe('OMbrella');
});
});
+80 -102
View File
@@ -1,32 +1,24 @@
<script lang="ts">
import { onDestroy, onMount } from 'svelte';
import { onMount } from 'svelte';
import { storedLocation } from '$lib/stores/settings';
import {
buildAverageSeries,
buildCurrentTimeSeries,
buildDaylightSeries,
buildSpreadSeries,
composeChartOption,
getThemeColors
} from '$lib/utils/echarts';
import { ChartContainer, ChartToolbar, EChart } from '$lib/components/charts';
import '$lib/components/charts/echarts.css';
import { ChartContainer, ChartToolbar } from '$lib/components/charts';
import { Label } from '$lib/components/ui/label';
import { Switch } from '$lib/components/ui/switch';
import { CHART_COLORS, CanvasChart, type ChartSeries, isColumnUnit } from '$lib/charts';
import {
type DaylightBand,
type EnsembleForecastResult,
type MarkArea,
fetchEnsembleForecast
} from '$lib/services/weather';
import { defaultParameters } from '../../options';
import type { PageData } from './$types';
import type * as echarts from 'echarts';
const CHART_GROUP = '14-day-ensemble';
// ─── Display State (does NOT trigger data re-fetch) ─────────────────────────
@@ -34,9 +26,7 @@
// ─── Data Fetch State ───────────────────────────────────────────────────────
let chartComponents: EChart[] = $state([]);
let chartInstances: echarts.ECharts[] = $state([]);
let chartOptions: Array<Record<string, unknown>> = $state([]);
let chartComponents: CanvasChart[] = $state([]);
let mounted = $state(false);
let loading = $state(true);
let loadError = $state<string | null>(null);
@@ -64,7 +54,7 @@
ensembleResult: EnsembleForecastResult;
timestamps: number[];
timezone: string;
markAreas: MarkArea[];
daylightBands: DaylightBand[];
}
let fetchedData: FetchedData | null = $state(null);
@@ -75,22 +65,8 @@
mounted = true;
});
onDestroy(() => {
chartInstances = [];
chartOptions = [];
chartComponents = [];
});
// ─── Chart Instance Tracking ────────────────────────────────────────────────
function handleChartReady(chart: echarts.ECharts): void {
chartInstances = [...chartInstances, chart];
}
// chart components persist across refetches (options update in place), so
// the registry is never reset; only instances disposed because the chart
// count shrank are filtered out
let liveCharts = $derived(chartInstances.filter((chart) => !chart.isDisposed()));
// components persist across refetches; entries are null while unmounted
let liveCharts = $derived(chartComponents.filter((chart) => chart != null));
// ─── Data Fetching (only when params.hourly or params.models change) ───────
@@ -125,7 +101,7 @@
ensembleResult: result,
timestamps: result.timestamps,
timezone: result.timezone,
markAreas: result.markAreas
daylightBands: result.daylightBands
};
loading = false;
@@ -137,77 +113,74 @@
});
});
// ─── Chart Option Building (runs when fetchedData OR display toggles change) ─
// ─── Chart Building (runs when fetchedData or the variable list changes) ────
$effect(() => {
if (!fetchedData) return;
// Timestamps from the service are in milliseconds; CanvasChart uses seconds.
let timestampsSec = $derived.by(() =>
fetchedData ? fetchedData.timestamps.map((t) => t / 1000) : []
);
const { ensembleResult, timestamps, timezone, markAreas } = fetchedData;
const _showLegend = showLegend;
interface ChartDef {
title?: string;
subtitle?: string;
unit: string;
showCredit: boolean;
series: ChartSeries[];
}
const colors = getThemeColors();
const variableCount = params.hourly?.length || 0;
const newOptions: Array<Record<string, unknown>> = [];
let chartDefs = $derived.by((): ChartDef[] => {
if (!fetchedData) return [];
for (let vi = 0; vi < variableCount; vi++) {
const variable = params.hourly![vi];
const { ensembleResult } = fetchedData;
const variables = params.hourly || [];
const defs: ChartDef[] = [];
for (let vi = 0; vi < variables.length; vi++) {
const variable = variables[vi];
const varData = ensembleResult.variables[variable];
if (!varData) continue;
const unit = varData.unit;
const { average, min: minValues, max: maxValues } = varData;
const isColumn = isColumnUnit(unit);
const series: ChartSeries[] = [];
const series: Array<Record<string, unknown>> = [];
const spreadData: Array<[number, number, number]> = minValues.map(
(minVal, index) =>
[timestamps[index], minVal ?? 0, maxValues[index] ?? 0] as [number, number, number]
);
series.push(...buildSpreadSeries({ variable, spreadData }));
const averageData = average.map((val, idx) => [timestamps[idx], val] as [number, number]);
series.push(buildAverageSeries({ variable, data: averageData, unit }));
series.push(buildCurrentTimeSeries());
const daylightSeries = buildDaylightSeries({ markAreas });
if (daylightSeries) {
series.push(daylightSeries);
// Individual ensemble members: thin, low-alpha lines
for (let mi = 0; mi < varData.members.length; mi++) {
series.push({
name: `${variable}_member${String(mi).padStart(2, '0')}`,
type: 'line',
color: CHART_COLORS.memberLine,
data: varData.members[mi],
width: 1,
showInLegend: false
});
}
const isFirst = vi === 0;
const isLast = vi === variableCount - 1;
const option = composeChartOption({
title: isFirst
? {
text: 'Model Spread',
subtext: `Compare ${params.hourly?.join(', ') || ''} in models: ${params.models?.join(', ') || ''}`
}
: null,
tooltip: { unit, timezone },
legend: {
show: _showLegend,
data: [variable + '_average']
},
grid: {
hasTitle: isFirst,
hasSubtitle: isFirst,
showLegend: _showLegend
},
yAxis: { unit },
series,
toolbox: false,
showCredit: isLast,
colors,
timezone
// Ensemble mean: bold dashed line on top
series.push({
name: variable + '_average',
type: isColumn ? 'bar' : 'line',
color: CHART_COLORS.average,
data: varData.average,
width: 4,
dashed: !isColumn
});
newOptions.push(option);
const isFirst = vi === 0;
const isLast = vi === variables.length - 1;
defs.push({
title: isFirst ? 'Model Spread' : undefined,
subtitle: isFirst
? `Compare ${params.hourly?.join(', ') || ''} in models: ${params.models?.join(', ') || ''}`
: undefined,
unit,
showCredit: isLast,
series
});
}
chartOptions = newOptions;
return defs;
});
</script>
@@ -221,20 +194,25 @@
</div>
{/if}
<ChartContainer
{loading}
chartCount={params.hourly?.length || 0}
chartHeight={showLegend ? 400 : 300}
>
{#each chartOptions as option, i (i)}
<EChart
{option}
notMerge
height={showLegend ? '400px' : '300px'}
onChartReady={handleChartReady}
<ChartContainer {loading} chartCount={params.hourly?.length || 1} chartHeight={300}>
{#if fetchedData}
{#each chartDefs as def, i (i)}
<CanvasChart
bind:this={chartComponents[i]}
timestamps={timestampsSec}
timezone={fetchedData.timezone}
series={def.series}
bands={fetchedData.daylightBands}
unit={def.unit}
title={def.title}
subtitle={def.subtitle}
showCredit={def.showCredit}
{showLegend}
height={300}
group={CHART_GROUP}
/>
{/each}
{/if}
</ChartContainer>
<!-- ─── Toolbar: Controls + Download ───────────────────────────────────────── -->
@@ -1,28 +1,25 @@
<script lang="ts">
import { onDestroy, onMount } from 'svelte';
import { onMount } from 'svelte';
import { fade } from 'svelte/transition';
import { storedLocation } from '$lib/stores/settings';
import {
buildAverageSeries,
buildCurrentTimeSeries,
buildDaylightSeries,
buildModelSeries,
calculateAverage,
composeChartOption,
findUnit,
getThemeColors
} from '$lib/utils/echarts';
import { ChartContainer, ChartToolbar, EChart } from '$lib/components/charts';
import '$lib/components/charts/echarts.css';
import { ChartContainer, ChartToolbar } from '$lib/components/charts';
import { Checkbox } from '$lib/components/ui/checkbox';
import { Label } from '$lib/components/ui/label';
import { Switch } from '$lib/components/ui/switch';
import {
type MarkArea,
CHART_COLORS,
CanvasChart,
type ChartSeries,
SERIES_COLORS,
calculateAverage,
findUnit,
isColumnUnit
} from '$lib/charts';
import {
type DaylightBand,
type ModelCompareResult,
fetchModelComparison
} from '$lib/services/weather';
@@ -32,19 +29,18 @@
import ModelPictogramTimeline from './ModelPictogramTimeline.svelte';
import type { PageData } from './$types';
import type * as echarts from 'echarts';
const models = [modelsFlat];
const CHART_GROUP = 'model-compare';
// ─── Display State (does NOT trigger data re-fetch) ─────────────────────────
let showLegend = $state(false);
// ─── Data Fetch State ───────────────────────────────────────────────────────
let chartComponents: EChart[] = $state([]);
let chartInstances: echarts.ECharts[] = $state([]);
let chartOptions: Array<Record<string, unknown>> = $state([]);
let chartComponents: CanvasChart[] = $state([]);
let mounted = $state(false);
let loading = $state(true);
let loadError = $state<string | null>(null);
@@ -86,7 +82,7 @@
hourly: Record<string, unknown>;
hourly_units: Record<string, string>;
timezone: string;
markAreas: MarkArea[];
daylightBands: DaylightBand[];
timestamps: number[];
sunrise: number[];
sunset: number[];
@@ -100,22 +96,8 @@
mounted = true;
});
onDestroy(() => {
chartInstances = [];
chartOptions = [];
chartComponents = [];
});
// ─── Chart Instance Tracking ────────────────────────────────────────────────
function handleChartReady(chart: echarts.ECharts): void {
chartInstances = [...chartInstances, chart];
}
// chart components persist across refetches (options update in place), so
// the registry is never reset; only instances disposed because the chart
// count shrank are filtered out
let liveCharts = $derived(chartInstances.filter((chart) => !chart.isDisposed()));
// components persist across refetches; entries are null while unmounted
let liveCharts = $derived(chartComponents.filter((chart) => chart != null));
// ─── Data Fetching (only when params.hourly or params.models change) ───────
@@ -149,7 +131,7 @@
hourly: result.hourlyFlat,
hourly_units: result.hourlyUnitsFlat,
timezone: result.timezone,
markAreas: result.markAreas,
daylightBands: result.daylightBands,
timestamps: result.timestamps,
sunrise: result.sunrise,
sunset: result.sunset
@@ -164,83 +146,77 @@
});
});
// ─── Chart Option Building (runs when fetchedData OR display toggles change) ─
// ─── Chart Building (runs when fetchedData or the variable list changes) ────
$effect(() => {
if (!fetchedData) return;
// Timestamps from the service are in milliseconds; CanvasChart uses seconds.
let timestampsSec = $derived.by(() =>
fetchedData ? fetchedData.timestamps.map((t) => t / 1000) : []
);
const { hourly: hourlyData, hourly_units, timezone, markAreas, timestamps } = fetchedData;
const _showLegend = showLegend;
interface ChartDef {
title?: string;
subtitle?: string;
unit: string;
showCredit: boolean;
series: ChartSeries[];
}
const colors = getThemeColors();
let chartDefs = $derived.by((): ChartDef[] => {
if (!fetchedData) return [];
const { hourly: hourlyData, hourly_units, timestamps } = fetchedData;
const chartVariables = params.hourly?.filter((v) => v !== 'weather_code') || [];
const variableCount = chartVariables.length;
const timeLength = timestamps.length;
const newOptions: Array<Record<string, unknown>> = [];
const defs: ChartDef[] = [];
for (let vi = 0; vi < variableCount; vi++) {
const variable = chartVariables[vi];
const unit = findUnit(hourly_units, hourlyData, variable);
const isColumn = isColumnUnit(unit);
const series: Array<Record<string, unknown>> = [];
const series: ChartSeries[] = [];
let modelIndex = 0;
for (const [model, values] of Object.entries(hourlyData)) {
if (model === 'time') continue;
if (!model.startsWith(variable)) continue;
const seriesData = (values as (number | null)[]).map(
(val, idx) => [timestamps[idx], val] as [number, number | null]
);
series.push(
buildModelSeries({
series.push({
name: model,
data: seriesData,
unit
})
);
type: isColumn ? 'bar' : 'line',
color: SERIES_COLORS[modelIndex % SERIES_COLORS.length],
data: values as (number | null)[],
width: 2
});
modelIndex++;
}
const { average } = calculateAverage(hourlyData, variable, timeLength);
const averageData = average.map((val, idx) => [timestamps[idx], val] as [number, number]);
series.push(buildAverageSeries({ variable, data: averageData, unit }));
series.push(buildCurrentTimeSeries());
const daylightSeries = buildDaylightSeries({ markAreas });
if (daylightSeries) {
series.push(daylightSeries);
}
series.push({
name: variable + '_average',
type: isColumn ? 'bar' : 'line',
color: CHART_COLORS.average,
data: average,
width: 4,
dashed: !isColumn
});
const isFirst = vi === 0;
const isLast = vi === variableCount - 1;
const option = composeChartOption({
title: isFirst
? {
text: 'Model Compare',
subtext: `Compare ${chartVariables.join(', ') || ''} in models: ${params.models?.join(', ') || ''}`
}
: null,
tooltip: { unit, timezone },
legend: { show: _showLegend },
grid: {
hasTitle: isFirst,
hasSubtitle: isFirst,
showLegend: _showLegend
},
yAxis: { unit },
series,
toolbox: false,
defs.push({
title: isFirst ? 'Model Compare' : undefined,
subtitle: isFirst
? `Compare ${chartVariables.join(', ') || ''} in models: ${params.models?.join(', ') || ''}`
: undefined,
unit,
showCredit: isLast,
colors,
timezone
series
});
newOptions.push(option);
}
chartOptions = newOptions;
return defs;
});
</script>
@@ -254,16 +230,25 @@
</div>
{/if}
<ChartContainer {loading} chartCount={chartOptions.length} chartHeight={showLegend ? 400 : 300}>
{#each chartOptions as option, i (i)}
<EChart
{option}
notMerge
height={showLegend ? '400px' : '300px'}
onChartReady={handleChartReady}
<ChartContainer {loading} chartCount={chartDefs.length || 1} chartHeight={300}>
{#if fetchedData}
{#each chartDefs as def, i (i)}
<CanvasChart
bind:this={chartComponents[i]}
timestamps={timestampsSec}
timezone={fetchedData.timezone}
series={def.series}
bands={fetchedData.daylightBands}
unit={def.unit}
title={def.title}
subtitle={def.subtitle}
showCredit={def.showCredit}
{showLegend}
height={300}
group={CHART_GROUP}
/>
{/each}
{/if}
</ChartContainer>
{#if fetchedData && !loading}
@@ -82,7 +82,7 @@
timezone: result.timezone,
timestamps: result.hourlyTimestamps,
hourlyDates: result.hourlyDates,
markAreas: result.markAreas
daylightBands: result.daylightBands
};
fetchedDaily = {
@@ -102,8 +102,8 @@
</script>
<svelte:head>
<title>Weather | Open-Meteo.com</title>
<link rel="canonical" href="https://open-meteo.com/weather" />
<title>OMbrella | Weather</title>
<link rel="canonical" href="https://ombrella.servert.ch/weather/week" />
<meta name="description" content="7-day weather forecast with detailed hourly data" />
</svelte:head>
@@ -40,7 +40,7 @@
</script>
<div in:fade out:fade class="mb-6 min-h-[260px]">
<div class="flex gap-1 overflow-x-auto pb-1" style="scrollbar-width: thin">
<div class="flex gap-2 overflow-x-auto p-1 pb-2" style="scrollbar-width: thin">
{#if daily}
{#each daily.dailyDates as time, index (index)}
{@const selected = isSameDayInZone(time, selectedDay, daily.timezone)}
@@ -57,100 +57,90 @@
{@const windDir = daily.daily.winddirection_10m_dominant[index]}
{@const unit = String(units.temperature_unit)}
{@const maxStyle = getTempStyle(tempMax, unit)}
{@const minStyle = getTempStyle(tempMin, unit)}
{#if tempMax != null && !isNaN(tempMax)}
<button
class="group flex min-w-[108px] max-w-[170px] flex-1 cursor-pointer flex-col items-center gap-0.5 rounded-xl border-2 px-1.5 py-2 transition-all duration-200
class="group relative flex min-w-[112px] max-w-[170px] flex-1 cursor-pointer flex-col items-center gap-1 rounded-2xl border px-2 pt-3 pb-2.5 transition-all duration-200
{selected
? 'scale-[1.03] border-primary bg-accent shadow-md'
: 'border-transparent bg-card hover:bg-accent'}"
? 'border-primary/50 bg-primary/5 shadow-md ring-2 ring-primary/40'
: 'border-border/60 bg-card shadow-xs hover:-translate-y-0.5 hover:border-border hover:shadow-md'}"
aria-pressed={selected}
onclick={() => onSelectDay(time, index)}
>
<!-- Day label -->
<span class="text-sm font-bold tracking-wide">
<span class="text-[13px] font-semibold tracking-wider">
{formatZoned(time, daily.timezone, 'EEE').toUpperCase()}
</span>
<span class="text-[11px] text-muted-foreground">
<span class="-mt-1 text-[11px] text-muted-foreground">
{getRelativeDayLabel(time, daily.timezone)}
</span>
<!-- Weather icon -->
<div
class="my-1 flex w-full items-center justify-center rounded-lg py-1.5"
style="background: {sunColor}22"
>
<svg class="fill-foreground" width="48px" height="48px">
<svg class="day-icon my-1 fill-foreground" width="46px" height="46px">
<use
xlink:href="/images/weather-icons/wi-day-{weatherCodes[
wCode as keyof typeof weatherCodes
] ?? 'clear'}.svg#Layer_1"
></use>
</svg>
</div>
<!-- Temperature max/min -->
<div class="flex w-full flex-col">
<div
class="w-full rounded-t px-1 py-0.5 text-center text-[15px] font-bold"
<div class="flex items-baseline gap-1.5">
<span
class="rounded-lg px-2 py-0.5 text-[15px] font-bold tabular-nums"
style="background-color: {maxStyle.bg}; color: {maxStyle.fg}"
>
{tempMax.toFixed(0)}°
</div>
<div
class="w-full rounded-b px-1 py-0.5 text-center text-xs font-semibold"
style="background-color: {minStyle.bg}; color: {minStyle.fg}"
>
</span>
<span class="text-sm font-medium tabular-nums text-muted-foreground">
{tempMin.toFixed(0)}°
</div>
</span>
</div>
<!-- Details section -->
<div class="mt-1 flex w-full flex-col items-center gap-0.5">
<!-- Sunshine bar -->
<div class="flex w-full items-center gap-1 px-1">
<svg class="shrink-0" width="14px" height="14px" style="fill: {sunColor}">
<!-- Details -->
<div class="mt-1.5 flex w-full flex-col gap-1 border-t border-border/50 px-1 pt-1.5">
<!-- Sunshine -->
<div class="flex w-full items-center gap-1.5">
<svg class="shrink-0" width="13px" height="13px" style="fill: {sunColor}">
<use xlink:href="/images/weather-icons/wi-day-sunny.svg#Layer_1"></use>
</svg>
<div class="h-1.5 flex-1 overflow-hidden rounded-full bg-muted">
<div class="h-1 flex-1 overflow-hidden rounded-full bg-muted">
<div
class="h-full rounded-full transition-all"
style="width: {sunPct}%; background-color: {sunColor}"
></div>
</div>
<span class="text-[10px] font-medium text-muted-foreground">
<span class="text-[10px] font-medium tabular-nums text-muted-foreground">
{Number((sunDuration ?? 0) / 3600).toFixed(0)}h
</span>
</div>
<!-- Precipitation -->
<div class="flex items-center gap-1 text-[11px]">
<svg class="fill-foreground shrink-0" width="14px" height="14px">
<!-- Precipitation + wind -->
<div
class="flex w-full items-center justify-center gap-2.5 text-[11px] tabular-nums text-foreground/80"
>
<span class="inline-flex items-center gap-0.5">
<svg class="shrink-0 fill-foreground/70" width="13px" height="13px">
<use xlink:href="/images/weather-icons/wi-raindrop.svg#Layer_1"></use>
</svg>
<span>
{Number(precipSum ?? 0).toFixed(
precipSum >= 10 ? 0 : 1
)}{units.precipitation_unit === 'mm' ? ' mm' : "'"}
</span>
</div>
<!-- Wind with direction -->
<div class="flex items-center gap-1 text-[11px]">
<span class="inline-flex items-center gap-0.5">
{#if windDir != null && !isNaN(windDir)}
<div
<span
class="inline-flex shrink-0"
style="transform: {getWindArrowRotation(windDir)}"
>
<svg class="fill-foreground" width="20px" height="20px">
<svg class="fill-foreground/70" width="16px" height="16px">
<use xlink:href="/images/weather-icons/wi-direction-down.svg#Layer_1"></use>
</svg>
</div>
</span>
{:else}
<svg class="fill-foreground shrink-0" width="20px" height="20px">
<svg class="shrink-0 fill-foreground/70" width="16px" height="16px">
<use xlink:href="/images/weather-icons/wi-strong-wind.svg#Layer_1"></use>
</svg>
{/if}
<span>
{windMax?.toFixed(0) ?? '-'}<span class="text-muted-foreground"
>-{gustMax?.toFixed(0) ?? '-'}</span
>
@@ -167,12 +157,12 @@
<style>
@media (max-width: 768px) {
button {
min-width: 92px !important;
min-width: 96px !important;
}
button :global(svg[width='48px']) {
width: 40px;
height: 40px;
button :global(.day-icon) {
width: 38px;
height: 38px;
}
}
</style>
@@ -189,27 +189,29 @@
{formatZoned(selectedDay, data.timezone, 'EEEE')} Hourly
<span class="ml-1 text-xs font-normal text-muted-foreground">({timezoneLabel})</span>
</h3>
<div class="flex items-center gap-1.5 text-[13px] font-semibold">
<span class="select-none text-muted-foreground">3h</span>
<button
class="relative h-6 w-11 cursor-pointer rounded-full border transition-colors
{hourlyInterval === 1 ? 'border-primary/40 bg-primary' : 'border-border bg-muted'}"
onclick={() => (hourlyInterval = hourlyInterval === 1 ? 3 : 1)}
title="Toggle between 1-hour and 3-hour intervals"
<div
class="inline-flex items-center rounded-lg bg-muted p-0.5 text-[13px] font-semibold"
role="group"
aria-label="Hourly interval"
>
<span
class="absolute top-[3px] size-[18px] rounded-full bg-white shadow-sm transition-[left] duration-200
{hourlyInterval === 1 ? 'left-[22px]' : 'left-[3px]'}"
></span>
{#each [3, 1] as interval (interval)}
<button
class="cursor-pointer rounded-md px-3 py-1 transition-colors {hourlyInterval === interval
? 'bg-background text-foreground shadow-sm'
: 'text-muted-foreground hover:text-foreground'}"
aria-pressed={hourlyInterval === interval}
onclick={() => (hourlyInterval = interval as 1 | 3)}
>
{interval}h
</button>
<span class="select-none text-muted-foreground">1h</span>
{/each}
</div>
</div>
{#if cellData.length > 0}
{@const hourly = data.hourly}
{@const iconPx = is3h ? 40 : 26}
<div class="overflow-hidden rounded-lg border border-border">
<div class="overflow-hidden rounded-xl border border-border/70 bg-card shadow-xs">
<table class="w-full table-fixed border-collapse whitespace-nowrap">
<caption class="sr-only">Hourly weather details for {locationName}</caption>
<colgroup>
@@ -425,7 +427,7 @@
<style>
tr {
border-top: 1px solid hsl(var(--border));
border-top: 1px solid hsl(var(--border) / 0.6);
}
/* ── Base cell ──────────────────────────────────────────── */
@@ -434,7 +436,8 @@
text-align: center;
font-size: 13px;
font-weight: 500;
border-right: 1px solid hsl(var(--border) / 0.2);
font-variant-numeric: tabular-nums;
border-right: 1px solid hsl(var(--border) / 0.15);
overflow: hidden;
}
@@ -444,7 +447,7 @@
.cell.now {
font-weight: 700;
box-shadow: inset 0 0 0 2px hsl(var(--destructive) / 0.45);
box-shadow: inset 0 0 0 2px hsl(var(--primary) / 0.55);
}
/* ── Row header ─────────────────────────────────────────── */
@@ -453,8 +456,8 @@
text-align: center;
font-weight: 600;
font-size: 11px;
background: hsl(var(--background));
border-right: 2px solid hsl(var(--border));
background: hsl(var(--muted) / 0.35);
border-right: 1px solid hsl(var(--border));
white-space: nowrap;
overflow: hidden;
}
@@ -473,7 +476,7 @@
}
.precip-cell.now {
box-shadow: inset 0 0 0 2px hsl(var(--destructive) / 0.45);
box-shadow: inset 0 0 0 2px hsl(var(--primary) / 0.55);
}
.precip-bar {
@@ -2,13 +2,11 @@
import { fade } from 'svelte/transition';
import { formatZoned, getRelativeDayLabel } from '$lib/utils/date';
import { buildCurrentTimeSeries, buildDaylightSeries, getThemeColors } from '$lib/utils/echarts';
import { ChartContainer, ChartToolbar, EChart } from '$lib/components/charts';
import { echarts } from '$lib/components/charts/echarts';
import '$lib/components/charts/echarts.css';
import { ChartContainer, ChartToolbar } from '$lib/components/charts';
import { CanvasChart, type ChartSeries } from '$lib/charts';
import { getColor } from '../../utils/colors';
import {
type FetchedHourly,
type WeatherUnits,
@@ -18,8 +16,6 @@
getWindUnit
} from './types';
import type { ECharts } from 'echarts';
interface Props {
data: FetchedHourly;
selectedDay: Date;
@@ -31,15 +27,18 @@
let { data, selectedDay, units, loading, onResetZoom }: Props = $props();
const CHART_GROUP = 'week-meteogram';
const MS_PER_DAY = 24 * 3600 * 1000;
const SECONDS_PER_DAY = 24 * 3600;
let showCharts = $state(false);
let chartComponents: EChart[] = $state([]);
let chartInstances: ECharts[] = $state([]);
let chartOptions: Array<Record<string, unknown>> = $state([]);
let chartComponents: CanvasChart[] = $state([]);
// Timestamps from the service are in milliseconds; CanvasChart uses seconds.
let timestampsSec = $derived(data.timestamps.map((t) => t / 1000));
let liveCharts = $derived(chartComponents.filter((chart) => chart != null));
export function scrollToDay(day: Date): void {
if (chartInstances.length === 0 || !data) return;
if (!data || liveCharts.length === 0) return;
const tz = data.timezone;
const targetDayStr = formatZoned(day, tz, 'yyyy-MM-dd');
@@ -49,436 +48,150 @@
if (firstHourIdx === -1) return;
const dayStart = data.timestamps[firstHourIdx];
const dayEnd = dayStart + MS_PER_DAY;
const timestamps = data.timestamps;
const rangeStart = timestamps[0];
const rangeEnd = timestamps[timestamps.length - 1];
const totalRange = rangeEnd - rangeStart;
if (totalRange <= 0) return;
const startPct = Math.max(0, ((dayStart - rangeStart) / totalRange) * 100);
const endPct = Math.min(100, ((dayEnd - rangeStart) / totalRange) * 100);
for (const chart of chartInstances) {
if (chart && !chart.isDisposed()) {
chart.dispatchAction({ type: 'dataZoom', start: startPct, end: endPct });
}
}
const dayStart = data.timestamps[firstHourIdx] / 1000;
// Charts share the group, so setting the range on one syncs all of them
liveCharts[0].setRange(dayStart, dayStart + SECONDS_PER_DAY);
}
function resetZoom(): void {
for (const chart of chartInstances) {
if (chart && !chart.isDisposed()) {
chart.dispatchAction({ type: 'dataZoom', start: 0, end: 100 });
}
}
liveCharts[0]?.resetRange();
onResetZoom?.();
}
function handleChartReady(chart: ECharts): void {
chart.group = CHART_GROUP;
chartInstances = [...chartInstances, chart];
if (chartInstances.length === 3) {
echarts.connect(CHART_GROUP);
// Zoom to the selected day once all three charts are mounted
let scrolledOnMount = false;
$effect(() => {
if (!showCharts) {
scrolledOnMount = false;
return;
}
if (!scrolledOnMount && liveCharts.length === 3 && data) {
scrolledOnMount = true;
requestAnimationFrame(() => scrollToDay(selectedDay));
}
}
$effect(() => {
if (!data) return;
const { hourly, timestamps, markAreas } = data;
const colors = getThemeColors();
const tempUnit = getTempUnit(units);
const precipUnit = getPrecipUnit(units);
const windUnit = getWindUnit(units);
const temps = hourly.temperature_2m;
const precip = hourly.precipitation;
const precipProb = hourly.precipitation_probability;
const cloudCov = hourly.cloud_cover;
const windSpeed = hourly.windspeed_10m;
const humidity = hourly.relative_humidity_2m;
const validTemps = temps.filter((t: number) => t !== null && !isNaN(t));
const minTemp = Math.min(...validTemps);
const maxTemp = Math.max(...validTemps);
const tempData = temps.map((v: number, i: number) => [timestamps[i], v]);
const cloudData = cloudCov.map((v: number, i: number) => [timestamps[i], v]);
const precipData = precip.map((v: number, i: number) => [timestamps[i], v]);
const precipProbData = precipProb.map((v: number, i: number) => [timestamps[i], v]);
const windData = windSpeed.map((v: number, i: number) => [timestamps[i], v]);
const humidityData = humidity.map((v: number, i: number) => [timestamps[i], v]);
const annotations = (): Array<Record<string, unknown>> => {
const series: Array<Record<string, unknown>> = [];
series.push(buildCurrentTimeSeries());
const dl = buildDaylightSeries({ markAreas });
if (dl) series.push(dl);
return series;
};
const timeXAxis = (showLabel: boolean): Record<string, unknown> => ({
type: 'time',
splitLine: { show: false },
axisLine: { lineStyle: { color: colors.axisLine } },
axisLabel: {
color: colors.text,
hideOverlap: true,
show: showLabel,
formatter: (value: number) => formatZoned(new Date(value), data.timezone, 'HH:mm')
},
axisTick: { lineStyle: { color: colors.axisLine } }
});
const insideZoom = (): Record<string, unknown> => ({
type: 'inside',
xAxisIndex: 0,
filterMode: 'none',
zoomOnMouseWheel: true,
moveOnMouseMove: true,
moveOnMouseWheel: false
});
// ─── Series Building ────────────────────────────────────────────────────────
const sliderZoom = (): Record<string, unknown> => ({
type: 'slider',
xAxisIndex: 0,
filterMode: 'none',
height: 20,
bottom: 4,
borderColor: colors.axisLine,
fillerColor: 'rgba(100, 140, 200, 0.2)',
handleStyle: { color: colors.text },
textStyle: { color: colors.text, fontSize: 10 },
dataBackground: {
lineStyle: { color: colors.axisLine },
areaStyle: { color: colors.splitLine }
},
selectedDataBackground: {
lineStyle: { color: colors.axisLine },
areaStyle: { color: 'rgba(100, 140, 200, 0.15)' }
}
});
let tempUnit = $derived(getTempUnit(units));
let precipUnit = $derived(getPrecipUnit(units));
let windUnit = $derived(getWindUnit(units));
const tooltipBase = (
formatter: (
params: Array<{
axisValue: number;
seriesName: string;
marker: string;
value: number | number[] | null;
}>
) => string
): Record<string, unknown> => ({
trigger: 'axis',
axisPointer: {
type: 'cross',
animation: false,
label: {
backgroundColor: colors.tooltipBg,
color: colors.text,
borderColor: colors.tooltipBorder,
borderWidth: 1,
formatter: (params: { axisDimension: string; value: number }) => {
if (params.axisDimension === 'x') {
return formatZoned(new Date(params.value), data.timezone, 'EEE d MMM HH:mm');
interface ChartDef {
title: string;
unit: string;
unitRight?: string;
yMin?: number;
yMinRight?: number;
yMaxRight?: number;
invertRight?: boolean;
showCredit?: boolean;
series: ChartSeries[];
}
return params.value.toFixed(1);
}
}
},
backgroundColor: colors.tooltipBg,
borderColor: colors.tooltipBorder,
textStyle: { color: colors.text },
formatter
});
const formatDate = (ts: number): string => {
const date = new Date(ts);
const dateStr = formatZoned(date, data.timezone, 'EEE d MMM HH:mm');
return `<b>${dateStr}</b><br/>`;
};
let chartDefs = $derived.by((): ChartDef[] => {
if (!data) return [];
const isAnnotation = (name: string): boolean => name === 'Daylight' || name === 'Current Time';
const { hourly } = data;
const tempOption: Record<string, unknown> = {
title: {
text: 'Temperature & Cloud Cover',
left: 'left',
textStyle: { fontWeight: 'normal', fontSize: 16, color: colors.text }
},
tooltip: tooltipBase((params) => {
if (!params?.length) return '';
let html = formatDate(params[0].axisValue as number);
for (const item of params) {
const name = item.seriesName as string;
if (isAnnotation(name)) continue;
const val = (item.value as [number, number])?.[1];
if (val == null) continue;
if (name === 'Temperature')
html += `${item.marker} ${name}: <b>${val.toFixed(1)} ${tempUnit}</b><br/>`;
else if (name === 'Cloud Cover')
html += `${item.marker} ${name}: <b>${val.toFixed(0)}%</b><br/>`;
}
return html;
}),
legend: {
show: true,
bottom: 0,
textStyle: { color: colors.text },
data: ['Temperature', 'Cloud Cover']
},
grid: { left: 60, right: 60, top: 50, bottom: 40 },
dataZoom: [insideZoom()],
xAxis: timeXAxis(false),
yAxis: [
{
type: 'value',
name: tempUnit,
nameTextStyle: { color: colors.text },
axisLine: { show: false },
axisLabel: { color: colors.text },
splitLine: { lineStyle: { color: colors.splitLine } }
},
{ type: 'value', min: 0, max: 250, inverse: true, show: false }
],
const tempChart: ChartDef = {
title: 'Temperature & Cloud Cover',
unit: tempUnit,
// Hidden inverted right axis (0-250) so cloud cover hangs from the top,
// occupying at most the upper 40% of the plot
yMinRight: 0,
yMaxRight: 250,
invertRight: true,
series: [
{
name: 'Temperature',
type: 'line',
data: tempData,
smooth: true,
showSymbol: false,
lineStyle: { width: 3, color: '#ef6c00' },
itemStyle: { color: '#ef6c00' },
areaStyle: {
color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
{
offset: 0,
color: getColor(maxTemp, String(units.temperature_unit)) + '88'
},
{
offset: 0.5,
color: getColor((maxTemp + minTemp) / 2, String(units.temperature_unit)) + '44'
},
{
offset: 1,
color: getColor(minTemp, String(units.temperature_unit)) + '08'
}
])
},
z: 5
},
{
name: 'Cloud Cover',
type: 'line',
data: cloudData,
smooth: true,
showSymbol: false,
yAxisIndex: 1,
lineStyle: { width: 0 },
itemStyle: { color: colors.text },
areaStyle: { color: 'rgba(150, 150, 150, 0.25)', origin: 'start' },
z: 1,
silent: true
color: 'rgb(150, 150, 150)',
data: hourly.cloud_cover,
width: 0,
fill: true,
fillOpacity: 0.25,
axis: 'right',
format: (v) => `${v.toFixed(0)}%`
},
...annotations()
],
textStyle: { color: colors.text }
{
name: 'Temperature',
type: 'line',
color: '#ef6c00',
data: hourly.temperature_2m,
width: 3,
fill: true,
fillOpacity: 0.2,
format: (v) => `${v.toFixed(1)} ${tempUnit}`
}
]
};
const precipOption: Record<string, unknown> = {
title: {
text: 'Precipitation & Probability',
left: 'left',
textStyle: { fontWeight: 'normal', fontSize: 16, color: colors.text }
},
tooltip: tooltipBase((params) => {
if (!params?.length) return '';
let html = formatDate(params[0].axisValue as number);
for (const item of params) {
const name = item.seriesName as string;
if (isAnnotation(name)) continue;
const val = (item.value as [number, number])?.[1];
if (val == null) continue;
if (name === 'Precipitation')
html += `${item.marker} ${name}: <b>${val.toFixed(1)} ${precipUnit}</b><br/>`;
else if (name === 'Precip. Probability')
html += `${item.marker} ${name}: <b>${val.toFixed(0)}%</b><br/>`;
}
return html;
}),
legend: {
show: true,
bottom: 0,
textStyle: { color: colors.text },
data: ['Precipitation', 'Precip. Probability']
},
grid: { left: 60, right: 60, top: 50, bottom: 40 },
dataZoom: [insideZoom()],
xAxis: timeXAxis(false),
yAxis: [
{
type: 'value',
name: precipUnit,
min: 0,
nameTextStyle: { color: colors.text },
axisLine: { show: false },
axisLabel: { color: colors.text },
splitLine: { lineStyle: { color: colors.splitLine } }
},
{
type: 'value',
name: '%',
min: 0,
max: 100,
nameTextStyle: { color: colors.text },
axisLine: { show: false },
axisLabel: { color: colors.text },
splitLine: { show: false }
}
],
const precipChart: ChartDef = {
title: 'Precipitation & Probability',
unit: precipUnit,
unitRight: '%',
yMin: 0,
yMinRight: 0,
yMaxRight: 100,
series: [
{
name: 'Precipitation',
type: 'bar',
data: precipData,
barMaxWidth: 8,
itemStyle: {
color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
{ offset: 0, color: 'rgba(30, 136, 229, 0.9)' },
{ offset: 1, color: 'rgba(30, 136, 229, 0.4)' }
])
},
yAxisIndex: 0,
z: 5
color: 'rgba(30, 136, 229, 0.8)',
data: hourly.precipitation,
format: (v) => `${v.toFixed(1)} ${precipUnit}`
},
{
name: 'Precip. Probability',
type: 'line',
data: precipProbData,
smooth: true,
showSymbol: false,
lineStyle: { width: 2, type: 'dashed', color: '#5c6bc0' },
itemStyle: { color: '#5c6bc0' },
yAxisIndex: 1,
z: 4
},
...annotations()
],
textStyle: { color: colors.text }
color: '#5c6bc0',
data: hourly.precipitation_probability,
width: 2,
dashed: true,
axis: 'right',
format: (v) => `${v.toFixed(0)}%`
}
]
};
const windOption: Record<string, unknown> = {
title: {
text: 'Wind Speed & Humidity',
left: 'left',
textStyle: { fontWeight: 'normal', fontSize: 16, color: colors.text }
},
tooltip: tooltipBase((params) => {
if (!params?.length) return '';
let html = formatDate(params[0].axisValue as number);
for (const item of params) {
const name = item.seriesName as string;
if (isAnnotation(name)) continue;
const val = (item.value as [number, number])?.[1];
if (val == null) continue;
if (name === 'Wind Speed') {
const idx = timestamps.indexOf(
(params[0] as Record<string, unknown>).axisValue as number
);
const windDir = idx >= 0 ? hourly.winddirection_10m[idx] : null;
html += `${item.marker} ${name}: <b>${val.toFixed(0)} ${windUnit}</b>`;
if (windDir != null && !isNaN(windDir)) html += ` (${getWindDirectionLabel(windDir)})`;
html += '<br/>';
} else if (name === 'Humidity') {
html += `${item.marker} ${name}: <b>${val.toFixed(0)}%</b><br/>`;
}
}
return html;
}),
legend: {
show: true,
bottom: 28,
textStyle: { color: colors.text },
data: ['Wind Speed', 'Humidity']
},
grid: { left: 60, right: 60, top: 50, bottom: 60 },
dataZoom: [insideZoom(), sliderZoom()],
xAxis: timeXAxis(true),
yAxis: [
{
type: 'value',
name: windUnit,
min: 0,
nameTextStyle: { color: colors.text },
axisLine: { show: false },
axisLabel: { color: colors.text },
splitLine: { lineStyle: { color: colors.splitLine } }
},
{
type: 'value',
name: '%',
min: 0,
max: 100,
nameTextStyle: { color: colors.text },
axisLine: { show: false },
axisLabel: { color: colors.text },
splitLine: { show: false }
}
],
const windChart: ChartDef = {
title: 'Wind Speed & Humidity',
unit: windUnit,
unitRight: '%',
yMin: 0,
yMinRight: 0,
yMaxRight: 100,
showCredit: true,
series: [
{
name: 'Wind Speed',
type: 'line',
data: windData,
smooth: true,
showSymbol: false,
lineStyle: { width: 2, color: '#26a69a' },
itemStyle: { color: '#26a69a' },
areaStyle: {
color: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
{ offset: 0, color: 'rgba(38, 166, 154, 0.25)' },
{ offset: 1, color: 'rgba(38, 166, 154, 0.02)' }
])
},
yAxisIndex: 0,
z: 5
color: '#26a69a',
data: hourly.windspeed_10m,
width: 2,
fill: true,
fillOpacity: 0.15,
format: (v, i) => {
const dir = hourly.winddirection_10m[i];
const dirLabel = dir != null && !isNaN(dir) ? ` (${getWindDirectionLabel(dir)})` : '';
return `${v.toFixed(0)} ${windUnit}${dirLabel}`;
}
},
{
name: 'Humidity',
type: 'line',
data: humidityData,
smooth: true,
showSymbol: false,
lineStyle: { width: 2, type: 'dotted', color: '#8d6e63' },
itemStyle: { color: '#8d6e63' },
yAxisIndex: 1,
z: 4
},
...annotations()
],
graphic: [
{
type: 'text',
right: 10,
bottom: 30,
style: {
text: 'Open-Meteo.com',
fontSize: 10,
fill: colors.text,
opacity: 0.4
},
cursor: 'pointer'
color: '#8d6e63',
data: hourly.relative_humidity_2m,
width: 2,
dashed: true,
axis: 'right',
format: (v) => `${v.toFixed(0)}%`
}
],
textStyle: { color: colors.text }
]
};
chartOptions = [tempOption, precipOption, windOption];
return [tempChart, precipChart, windChart];
});
</script>
@@ -520,19 +233,30 @@
</div>
<ChartContainer {loading} chartCount={3} chartHeight={300}>
{#each chartOptions as option, i (i)}
<EChart
{option}
notMerge
height={i === 2 ? '320px' : '300px'}
onChartReady={handleChartReady}
{#each chartDefs as def, i (def.title)}
<CanvasChart
bind:this={chartComponents[i]}
timestamps={timestampsSec}
timezone={data.timezone}
series={def.series}
bands={data.daylightBands}
unit={def.unit}
unitRight={def.unitRight}
yMin={def.yMin}
yMinRight={def.yMinRight}
yMaxRight={def.yMaxRight}
invertRight={def.invertRight}
title={def.title}
showCredit={def.showCredit}
showLegend
height={300}
group={CHART_GROUP}
/>
{/each}
</ChartContainer>
<div class="mt-6 md:mt-10">
<ChartToolbar charts={chartInstances} fileName="week-forecast" />
<ChartToolbar charts={liveCharts} fileName="week-forecast" />
</div>
</div>
{/if}
+2 -2
View File
@@ -1,4 +1,4 @@
import type { MarkArea, WeekDailyData, WeekHourlyData } from '$lib/services/weather';
import type { DaylightBand, WeekDailyData, WeekHourlyData } from '$lib/services/weather';
export interface WeatherUnits {
temperature_unit: string;
@@ -12,7 +12,7 @@ export interface FetchedHourly {
timezone: string;
timestamps: number[];
hourlyDates: Date[];
markAreas: MarkArea[];
daylightBands: DaylightBand[];
}
export interface FetchedDaily {