feat(round-14): GDPR脱敏被遗忘权/展会海报排版/全球雷达热力散点/DeepLink深度路由 (95套件1053测试全绿)

backend/src/modules/card/service/poster-layout.ts

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+import { Provide } from '@midwayjs/core';
+import { BaseService } from '@cool-midway/core';
+
+export type PosterAspectRatio = 'story_9_16' | 'feed_4_5';
+
+export interface PosterCanvasDimensions {
+  width: number;
+  height: number;
+  aspectRatio: '9:16' | '4:5';
+}
+
+export interface PosterLayoutOptions {
+  aspectRatio?: PosterAspectRatio;
+  cardName: string;
+  title?: string;
+  company?: string;
+  eventName?: string;
+  boothNumber?: string;
+  qrCodeSize?: number;
+}
+
+export interface PosterElementBox {
+  x: number;
+  y: number;
+  width: number;
+  height: number;
+  fontSize?: number;
+  isMultiLine?: boolean;
+}
+
+export interface PosterElementBoxesResult {
+  avatarBox: PosterElementBox;
+  nameBox: PosterElementBox;
+  titleBox: PosterElementBox;
+  companyBox: PosterElementBox;
+  eventBox: PosterElementBox;
+  qrBox: PosterElementBox;
+}
+
+export interface PosterLayoutManifest {
+  canvas: PosterCanvasDimensions;
+  themeColor: string;
+  elements: Array<{
+    type: 'text' | 'image' | 'qrcode' | 'rect';
+    box: PosterElementBox;
+    content?: string;
+  }>;
+}
+
+/**
+ * 计算海报画布尺寸
+ */
+export function calculatePosterCanvasDimensions(
+  ratio: PosterAspectRatio = 'story_9_16'
+): PosterCanvasDimensions {
+  if (ratio === 'feed_4_5') {
+    return {
+      width: 1080,
+      height: 1350,
+      aspectRatio: '4:5',
+    };
+  }
+  return {
+    width: 1080,
+    height: 1920,
+    aspectRatio: '9:16',
+  };
+}
+
+/**
+ * 计算多元素布局坐标盒
+ */
+export function calculatePosterElementBoxes(
+  options: PosterLayoutOptions
+): PosterElementBoxesResult {
+  const canvas = calculatePosterCanvasDimensions(options.aspectRatio);
+  const W = canvas.width;
+  const H = canvas.height;
+  const qrSize = options.qrCodeSize || 240;
+
+  // 头像居中排布在顶部 15% 位置
+  const avatarBox: PosterElementBox = {
+    x: (W - 160) / 2,
+    y: Math.round(H * 0.12),
+    width: 160,
+    height: 160,
+  };
+
+  // 姓名位于头像下方
+  const nameBox: PosterElementBox = {
+    x: 80,
+    y: avatarBox.y + avatarBox.height + 32,
+    width: W - 160,
+    height: 60,
+    fontSize: 48,
+  };
+
+  // 职位 (根据字数判断是否多行)
+  const isTitleLong = (options.title || '').length > 35;
+  const titleBox: PosterElementBox = {
+    x: 80,
+    y: nameBox.y + nameBox.height + 16,
+    width: W - 160,
+    height: isTitleLong ? 64 : 36,
+    fontSize: 28,
+    isMultiLine: isTitleLong,
+  };
+
+  // 公司
+  const companyBox: PosterElementBox = {
+    x: 80,
+    y: titleBox.y + titleBox.height + 16,
+    width: W - 160,
+    height: 36,
+    fontSize: 26,
+  };
+
+  // 展会卡片信息盒 (中下部)
+  const eventBox: PosterElementBox = {
+    x: 100,
+    y: Math.round(H * 0.52),
+    width: W - 200,
+    height: 180,
+    fontSize: 32,
+  };
+
+  // 二维码位于最底部且居中
+  const qrBox: PosterElementBox = {
+    x: (W - qrSize) / 2,
+    y: H - qrSize - (canvas.aspectRatio === '9:16' ? 180 : 100),
+    width: qrSize,
+    height: qrSize,
+  };
+
+  return {
+    avatarBox,
+    nameBox,
+    titleBox,
+    companyBox,
+    eventBox,
+    qrBox,
+  };
+}
+
+/**
+ * 展会海报轻量级排版引擎
+ */
+@Provide()
+export class CardPosterLayoutEngine extends BaseService {
+  /**
+   * 生成排版元数据 Manifest
+   */
+  generateLayoutManifest(options: PosterLayoutOptions): PosterLayoutManifest {
+    const canvas = calculatePosterCanvasDimensions(options.aspectRatio);
+    const boxes = calculatePosterElementBoxes(options);
+
+    const elements: PosterLayoutManifest['elements'] = [
+      {
+        type: 'text',
+        box: boxes.nameBox,
+        content: options.cardName,
+      },
+      {
+        type: 'text',
+        box: boxes.titleBox,
+        content: options.title,
+      },
+      {
+        type: 'text',
+        box: boxes.companyBox,
+        content: options.company,
+      },
+      {
+        type: 'qrcode',
+        box: boxes.qrBox,
+        content: 'https://omnicard.ai/p/card',
+      },
+    ];
+
+    if (options.eventName) {
+      elements.push({
+        type: 'rect',
+        box: boxes.eventBox,
+        content: `${options.eventName} | ${options.boothNumber || ''}`,
+      });
+    }
+
+    return {
+      canvas,
+      themeColor: '#0B5CFF', // 钴蓝主色
+      elements,
+    };
+  }
+}