import { NavigationContext } from './ChartNavigation';
import { ZoomOptions } from '../../types';

/**
 * Auto-scale all axes to fit data
 */
export declare function autoScaleAll(ctx: NavigationContext): void;
/**
 * Fit view to data or explicit ranges. Returns false when there is nothing to fit.
 */
export declare function fitToData(ctx: NavigationContext, options?: {
    x?: [number, number];
    y?: [number, number];
    padding?: number | {
        x?: number;
        y?: number;
    };
}): boolean;
/**
 * Auto-scale only Y-axes to fit data (keeps X-axis stable)
 * Used during streaming to prevent X-axis shifting
 */
export declare function autoScaleYOnly(ctx: NavigationContext): void;
/**
 * Handle box zoom selection
 */
export declare function handleBoxZoom(ctx: NavigationContext, selectionRect: {
    x: number;
    y: number;
    width: number;
    height: number;
} | null, currentRect: {
    x: number;
    y: number;
    width: number;
    height: number;
} | null, zoom: (options: ZoomOptions) => void): {
    x: number;
    y: number;
    width: number;
    height: number;
} | null;