deno.land / x / billboardjs@3.6.0 / ChartInternal / internals / scale.ts
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247/** * Copyright (c) 2017 ~ present NAVER Corp. * billboard.js project is licensed under the MIT license */import { scaleTime as d3ScaleTime, scaleUtc as d3ScaleUtc, scaleLinear as d3ScaleLinear, scaleLog as d3ScaleLog, scaleSymlog as d3ScaleSymlog} from "d3-scale";import {isString, isValue, parseDate} from "../../module/util";import type {IDataRow, IGridData} from "../data/IData";
/** * Get scale * @param {string} [type='linear'] Scale type * @param {number} [min] Min range * @param {number} [max] Max range * @returns {d3.scaleLinear|d3.scaleTime} scale * @private */export function getScale(type = "linear", min = 0, max = 1): any { const scale = ({ linear: d3ScaleLinear, log: d3ScaleSymlog, _log: d3ScaleLog, time: d3ScaleTime, utc: d3ScaleUtc })[type]();
scale.type = type; /_?log/.test(type) && scale.clamp(true);
return scale.range([min, max]);}
export default { /** * Get x Axis scale function * @param {number} min Min value * @param {number} max Max value * @param {Array} domain Domain value * @param {Function} offset The offset getter to be sum * @returns {Function} scale * @private */ getXScale(min: number, max: number, domain: number[], offset: Function) { const $$ = this; const scale = $$.scale.zoom || getScale($$.axis.getAxisType("x"), min, max);
return $$.getCustomizedScale( domain ? scale.domain(domain) : scale, offset ); },
/** * Get y Axis scale function * @param {string} id Axis id: 'y' or 'y2' * @param {number} min Min value * @param {number} max Max value * @param {Array} domain Domain value * @returns {Function} Scale function * @private */ getYScale(id: "y" | "y2", min: number, max: number, domain: number[]): Function { const $$ = this; const scale = getScale($$.axis.getAxisType(id), min, max);
domain && scale.domain(domain);
return scale; },
/** * Get y Axis scale * @param {string} id Axis id * @param {boolean} isSub Weather is sub Axis * @returns {Function} Scale function * @private */ getYScaleById(id: string, isSub = false): Function { const isY2 = this.axis.getId(id) === "y2"; const key = isSub ? (isY2 ? "subY2" : "subY") : (isY2 ? "y2" : "y");
return this.scale[key]; },
/** * Get customized scale * @param {d3.scaleLinear|d3.scaleTime} scaleValue Scale function * @param {Function} offsetValue Offset getter to be sum * @returns {Function} Scale function * @private */ getCustomizedScale(scaleValue: Function | any, offsetValue): Function { const $$ = this; const offset = offsetValue || (() => $$.axis.x.tickOffset()); const scale = function(d, raw) { const v = scaleValue(d) + offset();
return raw ? v : Math.ceil(v); };
// copy original scale methods for (const key in scaleValue) { scale[key] = scaleValue[key]; }
scale.orgDomain = () => scaleValue.domain(); scale.orgScale = () => scaleValue;
// define custom domain() for categorized axis if ($$.axis.isCategorized()) { scale.domain = function(domainValue) { let domain = domainValue;
if (!arguments.length) { domain = this.orgDomain();
return [domain[0], domain[1] + 1]; }
scaleValue.domain(domain);
return scale; }; }
return scale; },
/** * Update scale * @param {boolean} isInit Param is given at the init rendering * @param {boolean} updateXDomain If update x domain * @private */ updateScales(isInit: boolean, updateXDomain = true): void { const $$ = this; const {axis, config, format, org, scale, state: {width, height, width2, height2, hasAxis} } = $$;
if (hasAxis) { const isRotated = config.axis_rotated; const resettedPadding = $$.getResettedPadding(1);
// update edges const min = { x: isRotated ? resettedPadding : 0, y: isRotated ? 0 : height, subX: isRotated ? 1 : 0, subY: isRotated ? 0 : height2 };
const max = { x: isRotated ? height : width, y: isRotated ? width : resettedPadding, subX: isRotated ? height : width, subY: isRotated ? width2 : 1 };
// update scales // x Axis const xDomain = updateXDomain && scale.x?.orgDomain(); const xSubDomain = updateXDomain && org.xDomain;
scale.x = $$.getXScale(min.x, max.x, xDomain, () => axis.x.tickOffset()); scale.subX = $$.getXScale(min.x, max.x, xSubDomain, d => ( d % 1 ? 0 : (axis.subX ?? axis.x).tickOffset()) );
format.xAxisTick = axis.getXAxisTickFormat(); format.subXAxisTick = axis.getXAxisTickFormat(true);
axis.setAxis("x", scale.x, config.axis_x_tick_outer, isInit);
if (config.subchart_show) { axis.setAxis("subX", scale.subX, config.axis_x_tick_outer, isInit); }
// y Axis scale.y = $$.getYScale("y", min.y, max.y, scale.y ? scale.y.domain() : config.axis_y_default); scale.subY = $$.getYScale( "y", min.subY, max.subY, scale.subY ? scale.subY.domain() : config.axis_y_default);
axis.setAxis("y", scale.y, config.axis_y_tick_outer, isInit);
// y2 Axis if (config.axis_y2_show) { scale.y2 = $$.getYScale("y2", min.y, max.y, scale.y2 ? scale.y2.domain() : config.axis_y2_default); scale.subY2 = $$.getYScale( "y2", min.subY, max.subY, scale.subY2 ? scale.subY2.domain() : config.axis_y2_default);
axis.setAxis("y2", scale.y2, config.axis_y2_tick_outer, isInit); } } else { // update for arc $$.updateArc?.(); } },
/** * Get the zoom or unzoomed scaled value * @param {Date|number|object} d Data value * @returns {number|null} * @private */ xx(d: IDataRow): number | null { const $$ = this; const {config, scale: {x, zoom}} = $$; const fn = config.zoom_enabled && zoom ? zoom : x;
return d ? fn(isValue(d.x) ? d.x : d) : null; },
xv(d: IGridData): number { const $$ = this; const {axis, config, scale: {x, zoom}} = $$; const fn = config.zoom_enabled && zoom ? zoom : x; let value = $$.getBaseValue(d);
if (axis.isTimeSeries()) { value = parseDate.call($$, value); } else if (axis.isCategorized() && isString(value)) { value = config.axis_x_categories.indexOf(value); }
return Math.ceil(fn(value)); },
yv(d: IGridData): number { const $$ = this; const {scale: {y, y2}} = $$; const yScale = d.axis && d.axis === "y2" ? y2 : y;
return Math.ceil(yScale($$.getBaseValue(d))); },
subxx(d: IDataRow): number | null { return d ? this.scale.subX(d.x) : null; }};
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