@visactor/vchart/esm/component/axis/util.js

charts lib based @visactor/VGrammar

import { get } from "@visactor/vutils";

import { transformComponentStyle } from "../../util/style";

export const DEFAULT_TITLE_STYLE = {
    left: {
        textAlign: "center",
        textBaseline: "bottom"
    },
    right: {
        textAlign: "center",
        textBaseline: "bottom"
    },
    radius: {},
    angle: {}
};

export function transformAxisLineStyle(lineCfg) {
    return (lineCfg = transformComponentStyle(lineCfg)).startSymbol = transformComponentStyle(lineCfg.startSymbol), 
    lineCfg.endSymbol = transformComponentStyle(lineCfg.endSymbol), lineCfg;
}

export function getAxisLabelOffset(axisSpec) {
    let labelOffset = 0;
    return get(axisSpec, "tick.visible") && (labelOffset += get(axisSpec, "tick.tickSize")), 
    get(axisSpec, "label.visible") && (labelOffset += get(axisSpec, "label.space")), 
    labelOffset;
}

export function getLinearAxisSpecDomain(axisSpec, defaultDomain) {
    var _a, _b, _c, _d, _e, _f;
    return {
        min: null !== (_c = null !== (_a = axisSpec.min) && void 0 !== _a ? _a : null === (_b = axisSpec.range) || void 0 === _b ? void 0 : _b.min) && void 0 !== _c ? _c : null == defaultDomain ? void 0 : defaultDomain.min,
        max: null !== (_f = null !== (_d = axisSpec.max) && void 0 !== _d ? _d : null === (_e = axisSpec.range) || void 0 === _e ? void 0 : _e.max) && void 0 !== _f ? _f : null == defaultDomain ? void 0 : defaultDomain.max
    };
}

export function isValidCartesianAxis(spec) {
    const orient = null == spec ? void 0 : spec.orient;
    return "top" === orient || "bottom" === orient || "left" === orient || "right" === orient || "z" === orient;
}

export function isValidPolarAxis(spec) {
    const orient = null == spec ? void 0 : spec.orient;
    return "angle" === orient || "radius" === orient;
}

export const isDiscreteAxis = axisType => "band" === axisType || "ordinal" === axisType || "point" === axisType;

export function getAxisItem(value, normalizedValue) {
    return {
        id: value,
        label: value,
        value: normalizedValue,
        rawValue: value
    };
}

export function shouldUpdateAxis(preHelper, curHelper, forceUpdate) {
    return forceUpdate || !preHelper || preHelper.getAxisId() === curHelper.getAxisId();
}
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