zz-chart/lib/chart/color.js

Alauda Chart components by Alauda Frontend Team

import { DEFAULT_COLORS } from "../utils/constant.js";
export class ChartColorManager {
    constructor() {
        this.colorMap = new Map();
    }
    getChartColor(key) {
        if (!key)
            return DEFAULT_COLORS[0];
        if (this.colorMap.has(key)) {
            return this.colorMap.get(key);
        }
        const color = DEFAULT_COLORS[this.colorMap.size % DEFAULT_COLORS.length];
        this.colorMap.set(key, color);
        return color;
    }
    cleanupChartColors(validKeys) {
        const currentKeys = new Set(validKeys);
        for (const key of this.colorMap.keys()) {
            if (!currentKeys.has(key)) {
                this.colorMap.delete(key);
            }
        }
    }
    reset() {
        this.colorMap.clear();
    }
}
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