import { BarcodeSymbology, PrintDataField, PrintElement, PrintPaper, PrintSystemVar } from './types';
/** 预设纸张 */
export declare const PRESET_PAPERS: PrintPaper[];
/** 默认纸张 */
export declare const DEFAULT_PAPER: PrintPaper;
/** 默认字体族 */
export declare const DEFAULT_FONT_FAMILY = "Microsoft YaHei";
/** 字号预设 */
export declare const FONT_SIZE_PRESETS: number[];
/** 常用颜色 */
export declare const COLOR_PRESETS: string[];
/** 条码码制选项 */
export declare const BARCODE_SYMBOLOGY_OPTIONS: Array<{
    label: string;
    value: BarcodeSymbology;
}>;
/** 系统变量选项 */
export declare const SYSTEM_VAR_OPTIONS: Array<{
    label: string;
    value: PrintSystemVar;
}>;
/** 系统变量格式化（日期类） */
export declare const SYSTEM_VAR_DATE_FORMAT: Record<string, string>;
/** 默认数据字段（用于演示） */
export declare const DEFAULT_DATA_FIELDS: PrintDataField[];
/** 创建默认文本元素 */
export declare const createTextElement: (overrides?: Partial<PrintElement>) => PrintElement;
/** 创建默认条码元素 */
export declare const createBarcodeElement: (overrides?: Partial<PrintElement>) => PrintElement;
/** 创建默认二维码元素 */
export declare const createQrcodeElement: (overrides?: Partial<PrintElement>) => PrintElement;
/** 创建默认图片元素 */
export declare const createImageElement: (overrides?: Partial<PrintElement>) => PrintElement;
/** 创建默认直线元素 */
export declare const createLineElement: (overrides?: Partial<PrintElement>) => PrintElement;
/** 创建默认矩形元素 */
export declare const createRectElement: (overrides?: Partial<PrintElement>) => PrintElement;
/** 创建默认日期时间元素 */
export declare const createDateTimeElement: (overrides?: Partial<PrintElement>) => PrintElement;
/** 创建默认计数器元素 */
export declare const createCounterElement: (overrides?: Partial<PrintElement>) => PrintElement;
/** 创建默认表格元素 */
export declare const createTableElement: (overrides?: Partial<PrintElement>) => PrintElement;
/** 元素工厂函数映射 */
export declare const ELEMENT_FACTORIES: Record<string, (overrides?: Partial<PrintElement>) => PrintElement>;
/** MM 转 PX 比例（96 DPI：1mm ≈ 3.7795px） */
export declare const MM_TO_PX = 3.7795275591;
/** PX 转 MM 比例 */
export declare const PX_TO_MM: number;
/** MM 转 PT 比例（1pt = 1/72 inch, 1 inch = 25.4mm） */
export declare const MM_TO_PT: number;
/** PT 转 MM 比例 */
export declare const PT_TO_MM: number;
/** 默认缩放 */
export declare const DEFAULT_ZOOM = 1;
/** 缩放范围 */
export declare const ZOOM_RANGE: {
    min: number;
    max: number;
};
/** 缩放步进 */
export declare const ZOOM_STEP = 0.1;
/** 默认吸附阈值 */
export declare const DEFAULT_SNAP_THRESHOLD = 1;
/** 历史记录最大长度 */
export declare const MAX_HISTORY_SIZE = 50;