import { PdfElementType, PdfElementTypePreset, PdfFont, PdfPage, PdfTemplate } from './types';
/** 默认页面（A4，单位 mm） */
export declare const DEFAULT_PDF_PAGE: PdfPage;
/** 默认字体 */
export declare const DEFAULT_PDF_FONT: PdfFont;
/** MM 转 PX（96 DPI） */
export declare const MM_TO_PX = 3.7795275591;
/** 元素类型预设 */
export declare const PDF_ELEMENT_TYPE_PRESETS: PdfElementTypePreset[];
/** 字体族预设 */
export declare const PDF_FONT_FAMILY_PRESETS: string[];
/** 纸张预设 */
export declare const PDF_PAPER_PRESETS: {
    label: any;
    width: number;
    height: number;
}[];
/** 创建空模板 */
export declare const createTemplate: (overrides?: Partial<PdfTemplate>) => PdfTemplate;
/** 创建元素工厂 */
export declare const createElement: (type: PdfElementType, overrides?: Partial<any>) => {
    type: "heading";
    text: any;
    font: {
        size: number;
        weight: "bold";
        family: string;
        style?: "normal" | "italic";
        color?: string;
    };
    align: "left";
    id: string;
    x: number;
    y: number;
    width: number;
    height: number;
    rotation: number;
    zIndex: number;
} | {
    type: "text";
    text: any;
    font: {
        family: string;
        size: number;
        weight?: "normal" | "bold";
        style?: "normal" | "italic";
        color?: string;
    };
    align: "left";
    id: string;
    x: number;
    y: number;
    width: number;
    height: number;
    rotation: number;
    zIndex: number;
} | {
    type: "paragraph";
    text: any;
    font: {
        family: string;
        size: number;
        weight?: "normal" | "bold";
        style?: "normal" | "italic";
        color?: string;
    };
    align: "left";
    height: number;
    id: string;
    x: number;
    y: number;
    width: number;
    rotation: number;
    zIndex: number;
} | {
    type: "image";
    src: string;
    fit: "contain";
    height: number;
    id: string;
    x: number;
    y: number;
    width: number;
    rotation: number;
    zIndex: number;
} | {
    type: "table";
    columns: {
        field: string;
        label: any;
        width: number;
        align: "left";
    }[];
    headerBgColor: string;
    borderColor: string;
    height: number;
    width: number;
    id: string;
    x: number;
    y: number;
    rotation: number;
    zIndex: number;
} | {
    type: "divider";
    color: string;
    thickness: number;
    style: "solid";
    height: number;
    width: number;
    id: string;
    x: number;
    y: number;
    rotation: number;
    zIndex: number;
} | {
    type: "pageBreak";
    height: number;
    width: number;
    id: string;
    x: number;
    y: number;
    rotation: number;
    zIndex: number;
} | {
    type: "barcode";
    value: string;
    format: "CODE128";
    height: number;
    width: number;
    id: string;
    x: number;
    y: number;
    rotation: number;
    zIndex: number;
} | {
    type: "qrcode";
    value: string;
    format: "QR";
    height: number;
    width: number;
    id: string;
    x: number;
    y: number;
    rotation: number;
    zIndex: number;
} | {
    type: "signature";
    src: string;
    fit: "contain";
    height: number;
    width: number;
    id: string;
    x: number;
    y: number;
    rotation: number;
    zIndex: number;
} | {
    type: "checkbox";
    label: any;
    checked: boolean;
    height: number;
    width: number;
    id: string;
    x: number;
    y: number;
    rotation: number;
    zIndex: number;
} | {
    type: "date";
    text: string;
    font: {
        family: string;
        size: number;
        weight?: "normal" | "bold";
        style?: "normal" | "italic";
        color?: string;
    };
    align: "left";
    dataField: string;
    id: string;
    x: number;
    y: number;
    width: number;
    height: number;
    rotation: number;
    zIndex: number;
};