import { WatermarkConfig } from '../types/style.js';
import { Paragraph, TextRun, VerticalPositionAlign, HorizontalPositionAlign } from 'docx';
/**
* 水印处理器类
* 负责创建和配置文档水印
*/
export class WatermarkProcessor {
/**
* 创建水印配置
*/
static createWatermark(config: WatermarkConfig): any {
const {
text,
font = '宋体',
size = 100,
color = 'CCCCCC',
opacity = 0.3,
rotation = -45,
position = 'diagonal'
} = config;
// docx库的水印配置
return {
text: text,
font: font,
size: size,
color: color,
opacity: Math.max(0, Math.min(1, opacity)), // 确保在0-1之间
angle: rotation
};
}
/**
* 验证水印配置
*/
static validateWatermarkConfig(config: WatermarkConfig): { valid: boolean; errors: string[] } {
const errors: string[] = [];
if (!config.text || config.text.trim() === '') {
errors.push('水印文本不能为空');
}
if (config.size && (config.size < 10 || config.size > 500)) {
errors.push('水印字号应在10-500之间');
}
if (config.color && !/^[0-9A-Fa-f]{6}$/.test(config.color)) {
errors.push('水印颜色格式无效，应为6位十六进制');
}
if (config.opacity !== undefined && (config.opacity < 0 || config.opacity > 1)) {
errors.push('水印透明度应在0-1之间');
}
if (config.rotation !== undefined && (config.rotation < -360 || config.rotation > 360)) {
errors.push('水印旋转角度应在-360到360度之间');
}
return {
valid: errors.length === 0,
errors
};
}
/**
* 获取默认水印配置
*/
static getDefaultConfig(): WatermarkConfig {
return {
text: '机密文档',
font: '宋体',
size: 100,
color: 'CCCCCC',
opacity: 0.3,
rotation: -45,
position: 'diagonal'
};
}
/**
* 合并水印配置
*/
static mergeConfig(base: WatermarkConfig, override: Partial<WatermarkConfig>): WatermarkConfig {
return {
...base,
...override
};
}
}
