/**
 * Flex layout engine.
 * Computes positions and sizes for a VNode tree using flexbox-like rules.
 */
import { CellBuffer } from "./buffer.js";
import { LogicalBuffer } from "./logical-buffer.js";
import { type VNode } from "./vnode.js";
/**
 * Clip region for overflow handling.
 * Content outside this region will be clipped.
 */
export interface ClipRegion {
    minX: number;
    minY: number;
    maxX: number;
    maxY: number;
}
export interface LayoutBox {
    x: number;
    y: number;
    width: number;
    height: number;
    innerX: number;
    innerY: number;
    innerWidth: number;
    innerHeight: number;
    node: VNode;
    children: LayoutBox[];
    zIndex: number;
}
export interface LayoutContext {
    x: number;
    y: number;
    width: number;
    height: number;
}
export interface LayoutResult {
    box: LayoutBox;
    absoluteBoxes: LayoutBox[];
}
/**
 * Compute layout for a VNode tree.
 */
export declare function computeLayout(node: VNode, context: LayoutContext): LayoutBox;
/**
 * Render a LayoutBox tree to a CellBuffer.
 */
export declare function renderToBuffer(box: LayoutBox, buffer: CellBuffer, clip?: ClipRegion | null): void;
/**
 * Render a LayoutBox tree to a LogicalBuffer.
 * Text is written at full length - wrapping happens at display time.
 */
export declare function renderToLogicalBuffer(box: LayoutBox, buffer: LogicalBuffer, clip?: ClipRegion | null): void;
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