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website: snapshot

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nym21
2026-01-22 13:19:50 +01:00
parent 31c5a5dde5
commit bf13249003
3 changed files with 318 additions and 452 deletions
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345
website/scripts/chart/index.js
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@@ -77,7 +77,6 @@ const lineWidth = /** @type {any} */ (1.5);
* @param {BrkClient} args.brk
* @param {true} [args.fitContent]
* @param {HTMLElement} [args.captureElement]
* @param {{unit: Unit; blueprints: AnyFetchedSeriesBlueprint[]}[]} [args.config]
*/
export function createChart({
parent,
@@ -85,7 +84,6 @@ export function createChart({
brk,
fitContent,
captureElement,
config,
}) {
const baseUrl = brk.baseUrl.replace(/\/$/, "");
@@ -173,6 +171,9 @@ export function createChart({
fontFamily: style.fontFamily,
background: { color: "transparent" },
attributionLogo: false,
panes: {
enableResize: false,
},
},
grid: {
vertLines: { visible: false },
@@ -465,10 +466,8 @@ export function createChart({
/**
* @param {Object} args
* @param {string} args.name
* @param {Unit} args.unit
* @param {number} args.order
* @param {Color[]} args.colors
* @param {LCSeriesType} args.seriesType
* @param {AnyMetricPattern} args.metric
* @param {number} args.paneIndex
* @param {boolean} [args.defaultActive]
@@ -481,14 +480,11 @@ export function createChart({
* @param {(data: any[]) => void} args.setData
* @param {(data: any) => void} args.update
* @param {() => void} args.onRemove
* @param {() => void} [args.onDataLoaded]
*/
create({
metric,
name,
unit,
order,
seriesType,
paneIndex,
defaultActive,
colors,
@@ -501,7 +497,6 @@ export function createChart({
setData,
update,
onRemove,
onDataLoaded,
}) {
const key = stringToId(name);
const id = `${key}-${paneIndex}`;
@@ -689,7 +684,7 @@ export function createChart({
.setVisibleLogicalRange({ from: -1, to: data.length });
}
// Delay until chart has applied the range
requestAnimationFrame(() => onDataLoaded?.());
requestAnimationFrame(() => blueprints.onDataLoaded?.());
} else {
// Incremental update: only process new data points
for (let i = startIdx; i < length; i++) {
@@ -723,42 +718,30 @@ export function createChart({
// index.onChange.add(setupIndexEffect);
// _cleanup = () => index.onChange.delete(setupIndexEffect);
addPriceScaleSelectorIfNeeded({
paneIndex,
seriesType,
unit,
});
return series;
},
/**
* @param {Object} args
* @param {string} args.name
* @param {Unit} args.unit
* @param {number} args.order
* @param {AnyMetricPattern} args.metric
* @param {number} [args.paneIndex]
* @param {[Color, Color]} [args.colors] - [upColor, downColor] for legend
* @param {boolean} [args.defaultActive]
* @param {boolean} [args.inverse]
* @param {CandlestickSeriesPartialOptions} [args.options]
*/
addCandlestick({
metric,
name,
unit,
order,
paneIndex = 0,
colors: customColors,
defaultActive,
inverse,
options,
}) {
const defaultGreen = inverse ? colors.red : colors.green;
const defaultRed = inverse ? colors.green : colors.red;
const upColor = customColors?.[0] ?? defaultGreen;
const downColor = customColors?.[1] ?? defaultRed;
const upColor = customColors?.[0] ?? colors.green;
const downColor = customColors?.[1] ?? colors.red;
/** @type {CandlestickISeries} */
const candlestickISeries = /** @type {any} */ (
@@ -788,8 +771,10 @@ export function createChart({
let active = defaultActive !== false;
let highlighted = true;
let showLine = visibleBarsCount > 500;
let dataLoaded = false;
/** @param {number} barCount */
const shouldShowLine = (barCount) => barCount > 500;
let showLine = shouldShowLine(visibleBarsCount);
function update() {
candlestickISeries.applyOptions({
@@ -809,8 +794,8 @@ export function createChart({
/** @type {ZoomChangeCallback} */
function handleZoom(count) {
if (!dataLoaded) return; // Ignore zoom changes until data is ready
const newShowLine = count > 500;
if (!series.hasData()) return; // Ignore zoom changes until data is ready
const newShowLine = shouldShowLine(count);
if (newShowLine === showLine) return;
showLine = newShowLine;
update();
@@ -823,8 +808,6 @@ export function createChart({
name,
order,
paneIndex,
seriesType: "Candlestick",
unit,
defaultActive,
metric,
setOrder(order) {
@@ -855,6 +838,13 @@ export function createChart({
candlestickISeries.setData(data);
const lineData = data.map((d) => ({ time: d.time, value: d.close }));
lineISeries.setData(lineData);
requestAnimationFrame(() => {
const range = ichart.timeScale().getVisibleLogicalRange();
if (range) {
showLine = shouldShowLine(range.to - range.from);
}
update();
});
},
update: (data) => {
candlestickISeries.update(data);
@@ -867,10 +857,6 @@ export function createChart({
ichart.removeSeries(candlestickISeries);
ichart.removeSeries(lineISeries);
},
onDataLoaded: () => {
dataLoaded = true;
update();
},
});
panes.register(paneIndex, series, [candlestickISeries, lineISeries]);
@@ -880,7 +866,6 @@ export function createChart({
/**
* @param {Object} args
* @param {string} args.name
* @param {Unit} args.unit
* @param {number} args.order
* @param {AnyMetricPattern} args.metric
* @param {Color | [Color, Color]} [args.color] - Single color or [positive, negative] colors
@@ -891,7 +876,6 @@ export function createChart({
addHistogram({
metric,
name,
unit,
color = [colors.green, colors.red],
order,
paneIndex = 0,
@@ -932,8 +916,6 @@ export function createChart({
name,
order,
paneIndex,
seriesType: "Bar",
unit,
defaultActive,
metric,
setOrder: (order) => iseries.setSeriesOrder(order),
@@ -987,10 +969,9 @@ export function createChart({
/**
* @param {Object} args
* @param {string} args.name
* @param {Unit} args.unit
* @param {number} args.order
* @param {AnyMetricPattern} args.metric
* @param {Color} [args.color]
* @param {Color} args.color
* @param {number} [args.paneIndex]
* @param {boolean} [args.defaultActive]
* @param {LineSeriesPartialOptions} [args.options]
@@ -998,16 +979,12 @@ export function createChart({
addLine({
metric,
name,
unit,
order,
color: _color,
color,
paneIndex = 0,
defaultActive,
options,
}) {
const color =
_color ?? (unit.id === "usd" ? colors.green : colors.orange);
/** @type {LineISeries} */
const iseries = /** @type {any} */ (
ichart.addSeries(
@@ -1039,8 +1016,6 @@ export function createChart({
name,
order,
paneIndex,
seriesType: "Line",
unit,
defaultActive,
metric,
setOrder: (order) => iseries.setSeriesOrder(order),
@@ -1080,10 +1055,9 @@ export function createChart({
/**
* @param {Object} args
* @param {string} args.name
* @param {Unit} args.unit
* @param {number} args.order
* @param {AnyMetricPattern} args.metric
* @param {Color} [args.color]
* @param {Color} args.color
* @param {number} [args.paneIndex]
* @param {boolean} [args.defaultActive]
* @param {LineSeriesPartialOptions} [args.options]
@@ -1091,16 +1065,12 @@ export function createChart({
addDots({
metric,
name,
unit,
order,
color: _color,
color,
paneIndex = 0,
defaultActive,
options,
}) {
const color =
_color ?? (unit.id === "usd" ? colors.green : colors.orange);
/** @type {LineISeries} */
const iseries = /** @type {any} */ (
ichart.addSeries(
@@ -1145,8 +1115,6 @@ export function createChart({
name,
order,
paneIndex,
seriesType: "Line",
unit,
defaultActive,
metric,
setOrder: (order) => iseries.setSeriesOrder(order),
@@ -1187,7 +1155,6 @@ export function createChart({
/**
* @param {Object} args
* @param {string} args.name
* @param {Unit} args.unit
* @param {number} args.order
* @param {AnyMetricPattern} args.metric
* @param {number} [args.paneIndex]
@@ -1199,7 +1166,6 @@ export function createChart({
addBaseline({
metric,
name,
unit,
order,
paneIndex: _paneIndex,
defaultActive,
@@ -1249,8 +1215,6 @@ export function createChart({
name,
order,
paneIndex,
seriesType: "Baseline",
unit,
defaultActive,
metric,
setOrder: (order) => iseries.setSeriesOrder(order),
@@ -1290,21 +1254,16 @@ export function createChart({
};
/**
* @param {Object} args
* @param {Unit} args.unit
* @param {LCSeriesType} args.seriesType
* @param {number} args.paneIndex
* @param {number} paneIndex
* @param {Unit} unit
*/
function addPriceScaleSelectorIfNeeded({ unit, paneIndex, seriesType }) {
function applyScaleForUnit(paneIndex, unit) {
const id = `${chartId}-scale`;
/** @type {"lin" | "log"} */
const defaultValue =
unit.id === "usd" && seriesType !== "Baseline" ? "log" : "lin";
const defaultValue = unit.id === "usd" ? "log" : "lin";
const persisted = createPersistedValue({
defaultValue,
storageKey: `${id}-scale-${paneIndex}`,
defaultValue: /** @type {"lin" | "log"} */ (defaultValue),
storageKey: `${id}-${paneIndex}-${unit.id}`,
urlKey: paneIndex === 0 ? "price_scale" : "unit_scale",
serialize: (v) => v,
deserialize: (s) => /** @type {"lin" | "log"} */ (s),
@@ -1312,15 +1271,19 @@ export function createChart({
/** @param {"lin" | "log"} value */
const applyScale = (value) => {
try {
const pane = ichart.panes().at(paneIndex);
pane?.priceScale("right").applyOptions({
mode: value === "lin" ? 0 : 1,
});
} catch {}
panes.whenReady(paneIndex, () => {
try {
ichart
.panes()
.at(paneIndex)
?.priceScale("right")
.applyOptions({
mode: value === "lin" ? 0 : 1,
});
} catch {}
});
};
// Apply scale immediately
applyScale(persisted.value);
fieldsets.addIfNeeded({
@@ -1330,7 +1293,7 @@ export function createChart({
createChild() {
const field = createChoiceField({
choices: /** @type {const} */ (["lin", "log"]),
id: stringToId(`${id} ${paneIndex} ${unit}`),
id: stringToId(`${id} ${paneIndex}`),
initialValue: persisted.value,
onChange(value) {
persisted.set(value);
@@ -1343,11 +1306,206 @@ export function createChart({
});
}
const blueprints = {
/** @type {{ map: Map<Unit, AnyFetchedSeriesBlueprint[]>, series: AnySeries[], unit: Unit | null, legend: Legend }[]} */
panes: [
{ map: new Map(), series: [], unit: null, legend: legends.top },
{ map: new Map(), series: [], unit: null, legend: legends.bottom },
],
/** @type {VoidFunction | undefined} */
onDataLoaded: undefined,
/** @param {number} paneIndex */
rebuildPane(paneIndex) {
const pane = this.panes[paneIndex];
const { map, series, unit, legend } = pane;
if (!unit) {
series.forEach((s) => s.remove());
pane.series = [];
legend.removeFrom(0);
return;
}
const idx = index.get();
legend.removeFrom(0);
// Store old series to remove AFTER adding new ones
// This prevents pane collapse which loses scale settings
const oldSeries = [...series];
pane.series = [];
map.get(unit)?.forEach((blueprint, order) => {
const options = blueprint.options;
const indexes = Object.keys(blueprint.metric.by);
const defaultColor = unit.id === "usd" ? colors.green : colors.orange;
if (indexes.includes(idx)) {
switch (blueprint.type) {
case "Baseline": {
pane.series.push(
serieses.addBaseline({
metric: blueprint.metric,
name: blueprint.title,
defaultActive: blueprint.defaultActive,
paneIndex,
options: {
...options,
topLineColor:
blueprint.color?.() ?? blueprint.colors?.[0](),
bottomLineColor:
blueprint.color?.() ?? blueprint.colors?.[1](),
},
order,
}),
);
break;
}
case "Histogram": {
pane.series.push(
serieses.addHistogram({
metric: blueprint.metric,
name: blueprint.title,
color: blueprint.color,
defaultActive: blueprint.defaultActive,
paneIndex,
options,
order,
}),
);
break;
}
case "Candlestick": {
pane.series.push(
serieses.addCandlestick({
metric: blueprint.metric,
name: blueprint.title,
colors: blueprint.colors,
defaultActive: blueprint.defaultActive,
paneIndex,
options,
order,
}),
);
break;
}
case "Dots": {
pane.series.push(
serieses.addDots({
metric: blueprint.metric,
color: blueprint.color ?? defaultColor,
name: blueprint.title,
defaultActive: blueprint.defaultActive,
paneIndex,
options,
order,
}),
);
break;
}
case "Line":
case undefined:
pane.series.push(
serieses.addLine({
metric: blueprint.metric,
color: blueprint.color ?? defaultColor,
name: blueprint.title,
defaultActive: blueprint.defaultActive,
paneIndex,
options,
order,
}),
);
}
}
});
// Remove old series AFTER adding new ones to prevent pane collapse
oldSeries.forEach((s) => s.remove());
// Ensure other pane's series are in their correct pane before applying scale
// (they may have been collapsed when this pane was empty)
const otherPaneIndex = paneIndex === 0 ? 1 : 0;
panes.moveTo(otherPaneIndex, otherPaneIndex);
// Apply scale after series are created and panes are properly separated
applyScaleForUnit(paneIndex, unit);
},
rebuild() {
this.rebuildPane(0);
this.rebuildPane(1);
},
};
// Rebuild when index changes
index.onChange.add(() => blueprints.rebuild());
const chart = {
index,
legends,
serieses,
addFieldsetIfNeeded: fieldsets.addIfNeeded.bind(fieldsets),
/**
* @param {Object} args
* @param {Map<Unit, AnyFetchedSeriesBlueprint[]>} args.top
* @param {Map<Unit, AnyFetchedSeriesBlueprint[]>} args.bottom
* @param {VoidFunction} [args.onDataLoaded]
*/
setBlueprints({ top, bottom, onDataLoaded }) {
blueprints.panes[0].map = top;
blueprints.panes[1].map = bottom;
blueprints.onDataLoaded = onDataLoaded;
// Set up unit selectors for each pane
[top, bottom].forEach((map, paneIndex) => {
const units = Array.from(map.keys());
if (!units.length) {
blueprints.panes[paneIndex].unit = null;
return;
}
const defaultUnit = units[0];
const persistedUnit = createPersistedValue({
defaultValue: /** @type {string} */ (defaultUnit.id),
urlKey: paneIndex === 0 ? "u0" : "u1",
serialize: (v) => v,
deserialize: (s) => s,
});
// Find unit matching persisted value, or use default
const initialUnit =
units.find((u) => u.id === persistedUnit.value) ?? defaultUnit;
blueprints.panes[paneIndex].unit = initialUnit;
fieldsets.addIfNeeded({
id: `${chartId}-unit`,
paneIndex,
position: "nw",
createChild() {
return createChoiceField({
choices: units,
id: `pane-${paneIndex}-unit`,
initialValue: blueprints.panes[paneIndex].unit ?? defaultUnit,
toKey: (u) => u.id,
toLabel: (u) => u.name,
type: "select",
sorted: true,
onChange(unit) {
persistedUnit.set(unit.id);
blueprints.panes[paneIndex].unit = unit;
blueprints.rebuildPane(paneIndex);
},
});
},
});
});
blueprints.rebuild();
return blueprints;
},
destroy() {
removeThemeListener();
clearInterval(refreshInterval);
@@ -1355,31 +1513,6 @@ export function createChart({
},
};
config?.forEach(({ unit, blueprints }, paneIndex) => {
blueprints.forEach((blueprint, order) => {
const common = {
metric: blueprint.metric,
name: blueprint.title,
unit,
defaultActive: blueprint.defaultActive,
paneIndex,
options: blueprint.options,
order,
};
if (blueprint.type === "Candlestick") {
serieses.addCandlestick({ ...common, colors: blueprint.colors });
} else if (blueprint.type === "Baseline") {
serieses.addBaseline(common);
} else if (blueprint.type === "Histogram") {
serieses.addHistogram({ ...common, color: blueprint.color });
} else if (blueprint.type === "Dots") {
serieses.addDots({ ...common, color: blueprint.color });
} else {
serieses.addLine({ ...common, color: blueprint.color });
}
});
});
if (captureElement && canCapture) {
const domain = document.createElement("p");
domain.innerText = window.location.host;