Optimized SVG demonstration projection method

Abstract

The present invention relates to the field of computer application technology, in particular, it relates to a SVG demonstration projection method. Said method can divide system into application layer, logic layer and data layer. Said data layer includes DOM original data definition zone, DOM projection zone, playback stata storage unit and other data storage unit. Said demonstration projection method also includes initialization process of projection page and interactive process with user. Besides, the above-mentioned data layer also includes playback object storage unit and data object storage unit. The described DOM projection zone only stores last projected slide and current projecting slide.

Description

technical field [0001] The invention relates to the field of computer applications, in particular to an SVG demonstration projection method. Background technique [0002] As presentation files (such as presentation files in Microsoft Office, Open Office, and WPS Office) are used more and more widely in various fields such as government offices, educational practices, and corporate communications, the requirements for presentation files themselves are also increasing. High: Presentation files can no longer be satisfied with text, graphics, images and videos, and should and must have rich and excellent interactive performance; the same set of presentation files must be easily published on different media, in addition to traditional paper and In addition to PCs, there are also handheld devices such as Web publishing, PDAs, and mobile phones. But because the demo file is a binary file, not a file based on XML (eXtensible Markup Language), it is not very easy to distribute or re...

AI Technical Summary

Problems solved by technology

But because the demo file is a binary file, not an XML (eXtensible MarkupLanguage)-based file, it is not very easy to distribute or reuse a demo file

Therefore, a lot of research is now trying to rebuild a better presentation file. The general idea is: first express the logic and performance data of the presentation based on XML, and then use XSLT or other tools to convert the XML presentation file into a specific presentation form. They all have the function of generating SVG (Scalable Vector Graphics) files, but they all directly use SVG to express the presentation content. On the one hand, many original unique concepts in the presentation file are lost, and on the other hand, the animation cannot be reused. In turn, the size of the SVG file is too large, which is not conducive to network transmission in today's environment of increasing dependence on the Internet

In addition, if the presentation file is expressed in pure XML, although the logic will be very clear, it will increase the difficulty of converting XML into an SVG standard format document that can be understood by the SVG application, and may even be impossible for the SVG application Degree

Therefore, there is an SVG format document that can retain as much as possible the unique concepts in the demonstration and is easy to be understood and applied by SVG applications. figure 1 , the company's application for an invention patent titled "A SVG Demonstration Projector and Method for Demonstration Projection" discloses a method for SVG demonstration projection, which has certain shortcomings. Copy all the Slide data in the DOM tree to the nodes in the DOM tree, so that on the one hand, the element id may not be unique in the entire DOM tree, making it extremely complicated or even impossible to implement some requirements, such as interactive animation; on the other hand , all Slide data are in the same DOM tree, and the independence between each other is poor. When switching pages, it is impossible to use the Slide that has just been played as the switching background, but only use black as the switching background; also, Because the DOM tree is frequently operated, the loading time of the data preparation stage is long and the efficiency is very low when processing large-sized documents.

Images