Method and system for conversion of PDF (Portable Document Format) file into SWF (Shock Wave Flash) file

Abstract

The invention discloses a method for conversion of a PDF (Portable Document Format) file into an SWF (Shock Wave Flash) file. Text character on each page of the PDF file, pictures in the PDF file and graphic layers in the PDF file can be obtained through analyzing the PDF file, and unconventional characters excluded in a conventional conversion character library are substituted by conventional characters included in the conventional conversion character library according to a substitution rule. If no substitution rules are provided, the PDF page including the unconventional characters is imaged, and pixel identification is then carried out for the imaged page to convert the page of the PDF file including the unconventional characters into the SWF file. The invention also discloses a system for conversion of the PDF file into the SWF file. Due to the substitution and imaging treatment of the unconventional characters in the method and system for conversion of the PDF file into the SWF file, the missing of part of a text and garbled codes can be avoided during conversion of the PDF file into the SWF file.

Description

technical field [0001] The invention relates to computer application technology, in particular to a method and system for converting a PDF file to a SWF file. Background technique [0002] SWF (shock wave flash) is a special format for the animation design software Flash of Macromedia (now acquired by ADOBE). It is an animation file format that supports vector and dot matrix graphics. It is widely used in web design, animation production, etc. In the field, SWF files are also commonly referred to as Flash files. Due to its excellent effects and cross-platform features, SWF plays an important role in Internet reading. SWF is very popular, and now more than 99% of Internet users can read SWF files. [0003] PDF (Portable Document Format, portable file format) is a widely used electronic file format. [0004] For conversion from PDF to SWF, it is very urgent and necessary. Existing PDF to SWF file conversion tools (such as pdf2swf.exe), the method of converting PDF files to ...

AI Technical Summary

Problems solved by technology

[0011] Because the authors who generate PDF files use various fonts, and the general PDF to SWF conversion system (such as pdf2swf.exe) has limited conversion fonts, and usually lacks a variety of non-Western fonts, the fonts used in PDF files are very different. It may exceed the conversion font capacity of the general PDF to SWF conversion system, coupled with font copyright (such as Founder font copyright), in the process of PDF to SWF conversion, some texts will be missing and garbled;

[0012] In addition, because of the need for printing, the direct conversion will cause the generated SWF file to be too large; in addition, PDF file editors will use a large number of layers because of the pursuit of various artistic effects, and a large number of layers will lead to a heavy program calculation load , would directly result in a conversion error

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