添加、删除书签

import { pdfService } from '@kit.PDFKit';
import { hilog } from '@kit.PerformanceAnalysisKit';
// ...

@Entry
@Component
struct BookmarkPage {
  private pdfDocument: pdfService.PdfDocument = new pdfService.PdfDocument();
  private context = this.getUIContext().getHostContext() as Context;

  build() {
    Column() {
    // ...
        Button('addBookmark').onClick(async () => {
          // 确保在工程目录src/main/resources/resfile里有input.pdf文档
          let filePath = this.context.resourceDir + '/input.pdf';
          this.pdfDocument.loadDocument(filePath);
          // 创建书签
          let mark1: pdfService.Bookmark = this.pdfDocument.createBookmark();
          let mark2: pdfService.Bookmark = this.pdfDocument.createBookmark();
          // 设置书签的跳转信息
          let destInfo: pdfService.DestInfo = mark1.getDestInfo();
          destInfo.fitMode = pdfService.FitMode.FIT_MODE_XYZ;
          destInfo.pageIndex = 1;
          destInfo.left = 20;
          destInfo.top = 30;
          destInfo.zoom = 1.5;
          mark1.setDestInfo(destInfo);
          // 设置书签内容及样式
          let bookInfo: pdfService.BookmarkInfo = mark1.getBookmarkInfo();
          bookInfo.title = '这里是跳到第一页的书签';
          bookInfo.titleColor = 12;
          bookInfo.isBold = true;
          bookInfo.isItalic = true;
          mark1.setBookmarkInfo(bookInfo);
          // 把创建的书签插入到PDF页面
          this.pdfDocument.insertBookmark(mark1, null, 1);
          this.pdfDocument.insertBookmark(mark2, mark1, 1);
          // 设置保存文档沙箱路径并保存
          let outPdfPath = this.context.filesDir + '/testAddBookmark.pdf';
          let result = this.pdfDocument.saveDocument(outPdfPath);
          hilog.info(0x0000, 'BookmarkPage', 'saveAddBookmark %{public}s!', result ? 'success' : 'fail');
        })
        // 删除书签
        Button('removeBookmark').onClick(async () => {
          // 确保沙箱目录有testAddBookmark.pdf文档
          this.pdfDocument.loadDocument(this.context.filesDir + '/testAddBookmark.pdf');
          let bookmarks: pdfService.Bookmark = this.pdfDocument.getRootBookmark();
          if (bookmarks.isRootBookmark()) {
            let hasRemoveBookmark: boolean = this.pdfDocument.removeBookmark(bookmarks);
            hilog.info(0x0000, 'BookmarkPage', 'removeBookmark %{public}s!', hasRemoveBookmark ? 'success' : 'fail');
            let outPdfPath = this.context.filesDir + '/testRemoveBookmark.pdf';
            let result = this.pdfDocument.saveDocument(outPdfPath);
            hilog.info(0x0000, 'BookmarkPage', 'saveRemoveBookmark %{public}s!', result ? 'success' : 'fail');
          }
        })
        // ...
    }
  }
}