import { ChartTheme } from '../theme';
import { Series } from './Series';

export interface ChartLegendCallbacks {
    onMove: (x: number, y: number) => void;
    onResize?: (width: number) => void;
    onInteractionStart?: () => void;
    onInteractionEnd?: () => void;
    onHoverStart?: () => void;
    onHoverEnd?: () => void;
    /**
     * Called when mouse enters a series item in legend
     * @param series - The series being hovered
     * @param highlightColor - Whether to apply color highlighting (from options)
     */
    onSeriesHoverStart?: (series: Series, highlightColor: boolean) => void;
    /**
     * Called when mouse leaves a series item in legend
     * @param series - The series that was hovered
     * @param highlightColor - Whether color highlighting was applied
     */
    onSeriesHoverEnd?: (series: Series, highlightColor: boolean) => void;
    onToggleVisibility?: (series: Series) => void;
}
/** Options for ChartLegend component */
export interface ChartLegendOptions {
    x?: number;
    y?: number;
    width?: number;
    /**
     * Highlight series color on hover (default: false)
     * When false, series still comes to foreground but color doesn't change
     */
    highlightOnHover?: boolean;
    /**
     * Bring series to foreground (z-index) on hover (default: true)
     */
    bringToFrontOnHover?: boolean;
    /** Allow dragging the legend (default: true) */
    draggable?: boolean;
    /** Allow resizing the legend (default: true) */
    resizable?: boolean;
}
export declare class ChartLegend {
    private container;
    private visualContainer;
    private header;
    private content;
    private theme;
    private series;
    private callbacks;
    private swatchCanvases;
    private options;
    private isDragging;
    private isResizing;
    private dragOffsetX;
    private dragOffsetY;
    constructor(parent: HTMLElement, theme: ChartTheme, options: ChartLegendOptions, callbacks: ChartLegendCallbacks);
    private updateStyle;
    private initDragging;
    update(series: Series[]): void;
    private render;
    updateSeriesStyle(s: Series): void;
    private paintSwatch;
    /**
     * Internal symbol drawing logic (shared with canvas export)
     */
    private drawSymbol;
    draw(ctx: CanvasRenderingContext2D, dpr: number): void;
    updateTheme(theme: ChartTheme): void;
    setWidth(width: number): void;
    setVisible(visible: boolean): void;
    destroy(): void;
}