/**
 * Canvas Renderer for Graph Visualization
 * Handles rendering, pan, zoom, and interactions
 */
import { DocumentGraph, GraphNode } from "./graph-builder";
export interface RenderOptions {
    nodeRadius?: number;
    nodeColor?: string;
    nodeStroke?: string;
    nodeStrokeWidth?: number;
    edgeColor?: string;
    edgeWidth?: number;
    labelFont?: string;
    labelColor?: string;
    labelSize?: number;
    showLabels?: boolean;
    highlightColor?: string;
}
export declare class CanvasRenderer {
    private canvas;
    private ctx;
    private graph;
    private options;
    private offsetX;
    private offsetY;
    private scale;
    private isDragging;
    private dragStartX;
    private dragStartY;
    private hoveredNode;
    private selectedNode;
    private onNodeClick?;
    private onNodeHover?;
    constructor(canvas: HTMLCanvasElement, graph: DocumentGraph, options?: RenderOptions);
    /**
     * Render the graph
     */
    render(): void;
    /**
     * Render edges
     */
    private renderEdges;
    /**
     * Render nodes
     */
    private renderNodes;
    /**
     * Render labels
     */
    private renderLabels;
    /**
     * Setup event listeners for interaction
     */
    private setupEventListeners;
    /**
     * Get node at screen position
     */
    private getNodeAtPosition;
    /**
     * Get computed CSS color value
     */
    private getComputedColor;
    /**
     * Set node click callback
     */
    setOnNodeClick(callback: (node: GraphNode) => void): void;
    /**
     * Set node hover callback
     */
    setOnNodeHover(callback: (node: GraphNode | null) => void): void;
    /**
     * Reset view (center and fit)
     */
    resetView(): void;
    /**
     * Update canvas size
     */
    resize(width: number, height: number): void;
}