Rendering method applied to electronic whiteboard, and electronic whiteboard

Abstract

Embodiments of the invention disclose a rendering method applied to an electronic whiteboard, and the electronic whiteboard. The method comprises the steps of firstly performing synthesis operation onall graphic layers in the electronic whiteboard to obtain a synthesized original picture, and storing the original picture in a graph buffer area; secondly copying the original picture to a native layer of the electronic whiteboard, and drawing a corresponding graph in the to-be-processed picture according to touch operation after the touch operation of a user on the electronic whiteboard is received, wherein the original picture in the native layer is the to-be-processed picture; and thirdly according to the graph drawn in the to-be-processed picture, updating the original picture in the graph buffer area. According to the scheme disclosed by the method, the rendering of the electronic whiteboard can be realized and the interaction with a SurfaceFlinger service is not required; and the graphic layers are synthesized by the SurfaceFlinger service. Therefore, compared with the prior art, the scheme disclosed by the method has the advantages that the time for rendering the electronic whiteboard can be shortened and the rendering speed of the electronic whiteboard is increased.

Description

technical field [0001] The present application relates to the technical field of terminal equipment, in particular to a rendering method applied to an electronic whiteboard and the electronic whiteboard. Background technique [0002] The electronic whiteboard is a new type of teaching media. During use, the user can touch the screen of the electronic whiteboard. The electronic whiteboard renders according to the user's touch, generates a corresponding view, and displays the view through the screen. , so that various participants in the teaching process can see the view. Since electronic whiteboards can replace traditional blackboards and projectors, they are increasingly used. [0003] In the prior art, the electronic whiteboard usually adopts the following methods when rendering, see figure 1 As shown in the flowchart, when the user performs a touch operation on the screen of the electronic whiteboard, through step S101, the electronic whiteboard collects the coordinates ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of slow rendering speed in electronic whiteboards in the prior art, the present invention discloses a rendering method applied to electronic whiteboards and electronic whiteboards through the following embodiments

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