The Design And Implementation Of The Plotting Component Library With Cross-platform

Situational plot is a direction in the development of computer graphics.Although computer plotting software is becoming more and more mature,the users put higher requrements on the plotting software,it's hard to transplant between platforms for the existing plotting system which's implementation is limitation of the underlying operating system.The country promulgated a series of policies to protect the basic information,and encourage based software localization,in this situation the plotting system with cross-platform ability will have a very good development in the market.Due to the differences between the operating systems,the componets which are developed on the window system cannot be used in the domestic operating system,so design and implement a set of development framework that produces the imitation component with cross-platform ability according to the Microsoft's COM standard,which can solve the above problems.Firstly,this paper points out the topic background and research signficance with the needs of customers and the national policy,through researching the literature,summarizes the progress of computer plotting system at home and abroad,and summarizes the current existing problems and developing direction of plotting software.Then introduce the content associated with Microsoft components,including the implementation,the development methods and the application of the component,etc.Then expounds the selection of cross-platform tools and the design and implement the important class library in the development framework with the ability of producing the imitation component.Based on the research of the cross-platform imitation component framework as well as to the internal Qt graphical view,animation framework and SVG graphics format,the design is determined to the cross-platform situational plotting imitation component,the connection between the map and plotting component,the plotting component interface,symbol library,database and the plotting component are designed and implemented in detail.Finally through a concrete instance,each function in the plotting component is successfully verified,and realize the cross-platform characteristic of the plotting system.Finally,the paper summarizes the research achievements related to this topic,and points out the next research direction.