blind-friendly-library

Blind friendly lib

Web accessibility for people with disabilities

• demo

Table of Contents

• Blind friendly lib
  • Table of Contents
  • Technologies Used
  • Instalition and Usage
  • Project Setup
  • Configure library

Technologies Used

• JS
• NODE.JS

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Instalition and Usage

• install library

npm i blind-friendly-library

• This library needs to be imported into the main.js file in the project, specifically importing the index.js file (setBFL() function).

import { setBFL } from '../../lib/index.js';

• Then run the setBFL() function and insert the parameters you have chosen to set the speaker's voice.

setBFL(1,1,1.2,"en"); //(volume,rate,pitch,lang)

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Project Setup

• The project has three main functions TTS (text to speech), SF (speech focus) and VC (voice control).

1. SF (speech focus)

• Speech focus works by itself right after installing the library.
• Switched on with the CTRL+SHIFT+1 key.
• Switch between elements via the TAB key.

2. TTS (text to speech)

• Text to speech works using custom data-speaker attributes. These are added to the elements to be read.

<p data-speaker>Lorem ipsum dolor sit amet, consectetuer adipiscing elit.</p>

• Text to speech is activated using the CTRL+SHIFT+2 key.
• Use the arrows (<-,->) to move between elements.

3. VC (voice control)

• This function works by using custom attributes data-el-text, which are loaded when this function is run and then searches them to see if what the user said is in them. The value of the custom attribute specifies the name by which the element can be found.

<a data-el-text="Home">HOME</a>

<a data-el-text="Home" data-el-text-en="Home" data-el-text-cs="Domů">HOME</a>

• You can add the action, which will be performed. (default = click())

<a data-el-text="Home" data-el-action="click">HOME</a>

• Speech to text is enabled using the CTRL+SHIFT+3 key and then the user enters what is to be done. 4. Manual
• Press CTRL+SHIFT+4 to turn on the guide.

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Configure library

Keyboard shortCuts change

• You can also use the function to override keys to trigger functions in main.js

const myKey = {
  kscFocus: 'event.key === "1"',
  kscSpeaker: 'event.key === "2"',
  kscVoiceControl: 'event.key === "3"',
  kscManual: 'event.key === "4"',
};
setBFL(1, 1, 1.2, "en");
setKeyBFL(myKey); 

Importing Speaker functions

• Functions to make for example GUI for your Speaker, or just start Speaker from Button.

  import * as BFL from "blind-friendly-library/src/lib/index.js";
  
  BFL.startGlobalSpeaker();
  
  BFL.setSpeedOfSpeaker(newValue);
  BFL.pauseButton();
  BFL.stopSpeaker();
  BFL.previousArticle();
  BFL.nextArticle();
  
  BFL.hasPrevious();
  BFL.hasNext();
  BFL.isPauseBfl();
  
  this.isGlobalSpeakerStarted = false;

• Voice control function for adding a new command

  BFL.addCommand('new commad', () => { console.log('This is a new command!'); });