Denozordec
89b6cc5185
- Integrated dynamic theming for chart colors using a centralized theme file, enhancing visual consistency across charts. - Refactored chart initialization logic to ensure proper destruction and recreation of charts on data updates, improving performance and responsiveness. - Updated chart options to utilize theme colors for grid, ticks, and legends, providing a more cohesive user experience.
24 lines
1.1 KiB
TypeScript
24 lines
1.1 KiB
TypeScript
/** Доля изменения для тренд-бейджа; null если сравнивать не с чем. */
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export function percentChange(prev: number, cur: number): number | null {
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if (!Number.isFinite(prev) || !Number.isFinite(cur)) return null;
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if (prev === 0 && cur === 0) return null;
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if (prev === 0) return cur === 0 ? null : null; // избегаем бесконечного %; покажем только направление отдельно
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const p = ((cur - prev) / Math.abs(prev)) * 100;
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return Number.isFinite(p) ? p : null;
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}
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/** Для prev===0 и cur>0 возвращает «рост от нуля». */
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export function trendFromZero(prev: number, cur: number): 'up' | 'down' | 'flat' | null {
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if (!Number.isFinite(prev) || !Number.isFinite(cur)) return null;
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if (prev === 0 && cur === 0) return null;
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if (prev === 0) return cur > 0 ? 'up' : cur < 0 ? 'down' : 'flat';
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if (cur > prev) return 'up';
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if (cur < prev) return 'down';
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return 'flat';
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}
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export function formatSignedPercent(p: number): string {
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const sign = p > 0 ? '+' : '';
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return `${sign}${p.toFixed(1)}%`;
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}
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