PDF configurations for legacy document preview in Intelligent Media Management-Intelligent Media Management(IMM)-阿里云帮助中心

Perform operations on PDF documents, such as retrieving the page number, jumping to a page, and setting the page rendering mode.

Important

This document is no longer maintained. Use the new version of Intelligent Media Management.

For a comparison of the new and legacy versions of Intelligent Media Management, see New and legacy version guide.
For more information about document preview in the new version of Intelligent Media Management, see WebOffice frontend development.

Get page numbers and jump to pages

Retrieve the total number of pages

 /*
  * @return: number
  */
  let totalPages = await demo.PDFApplication().ActivePDF.PagesCount

Retrieve the current page number

 /*
  * @return: number
  */
  let totalPages = await demo.PDFApplication().ActivePDF.CurrentPage

Jump to a specific page

 /*
  * @param : { PageNum: number }
  */
  let PageNum = 10
  await demo.PDFApplication().ActivePDF.JumpToPage({PageNum})

Current page change event

  function eventHandle() {
    // do something
  }
  // Add a listener for the current page change event.
  demo.PDFApplication().Sub.CurrentPageChange = eventHandle
  // Destroy the event listener.
  demo.PDFApplication().Sub.CurrentPageChange = null

Set the page rendering mode

This feature is supported in V1.1.2 and later versions.

  /*
  * 1: Single-page mode
  * 0: Multi-page mode
  */
  // Set the mode to single-page mode.
  demo.PDFApplication().ActivePDF.PageMode = 1