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Method and apparatus for compatibility of canvas definition

A definition and canvas technology, applied in the direction of program control device, user interface execution, etc., can solve problems such as blind spots in ultrasonic ranging, and achieve clear display and clear canvas effect

Inactive Publication Date: 2018-12-18
ZHEJIANG NUMBER CHAIN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a canvas clarity compatible method, device and circuit to solve the problem of blind spots when using a single probe for ultrasonic ranging

Method used

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  • Method and apparatus for compatibility of canvas definition
  • Method and apparatus for compatibility of canvas definition
  • Method and apparatus for compatibility of canvas definition

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no. 2 example

[0057] See image 3 , Provided by the preferred embodiment of the present invention figure 1 The schematic diagram of the functional units of the canvas definition compatible device 100 is shown. It should be noted that the basic principles and technical effects of the canvas definition compatible device 100 provided in this embodiment are the same as those in the above embodiments. For a brief description, for the parts not mentioned in the embodiments of the present invention, please refer to the above The corresponding content in the embodiment. The canvas definition compatible device 100 includes:

[0058] The data acquisition unit 110 is configured to acquire the width and height of a canvas container preset by a device to the device pixel ratio.

[0059] Understandably, step S101 may be performed by the data obtaining unit 110.

[0060] The container creation unit 120 is configured to create a first container with an absolute positioning style, and set the first container ou...

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Abstract

The invention provides a canvas definition compatibility method and device, which relate to the definition compatibility technical field. By obtaining a width-to-height ratio of a canvas container preset by the device to the pixel of the device, and then creating the canvas node, and according to the width and height of the canvas, the actual width and height of the canvas, the pixel ratio of thedevice and the formula of the pre-stored conversion matrix are used to obtain the conversion matrix of the device, the canvas background object is obtained according to the canvas node, and finally the canvas is optimized according to the canvas background object and the conversion matrix to make the canvas clear. The canvas definition compatibility method and apparatus provided by the present invention have the effect of realizing clear display even for a device with a device pixel ratio greater than 1.

Description

Technical field [0001] The present invention relates to the technical field of definition compatibility, and in particular, to a canvas definition compatibility method and device. Background technique [0002] With the development of Internet technology, the front end, as a branch, has also developed vigorously in recent years. [0003] Among them, the Canvas (canvas) tag is an important part of the front end, which allows users to realize the graphic design of the web page without using pictures. However, for some devices with a device pixel ratio greater than 1, when the canvas is directly used for painting, the problem of unclear canvas display may occur. [0004] In view of this, how to solve the above problems is the focus of attention of those skilled in the art. Summary of the invention [0005] In view of this, the purpose of the present invention is to provide a method, device and circuit for canvas definition compatibility, so as to solve the problem of blind spots in ultr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/451
CPCG06F9/451
Inventor 尹雪松
Owner ZHEJIANG NUMBER CHAIN TECH CO LTD
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