import type { ToolName } from "./schemas.js";
import type { CanvasSnapshot } from "./types.js";
export type CanvasToolRequest = {
    name: "canvas_apply_ops";
    input: Record<string, unknown>;
};
/** 将上层画布工具调用转换为前端可执行的批量操作。 */
export declare function buildCanvasToolRequest(name: ToolName, input: Record<string, unknown>, state: CanvasSnapshot | null): CanvasToolRequest;
/** 按最大边限制计算附件图片节点尺寸，并保持原始比例。 */
export declare function fitAttachmentNodeSize(width: number, height: number): {
    width: number;
    height: number;
};