feat: init project
yugasun
7 years ago
parent
28cf46138a
commit
82f77ad9e7
@ -0,0 +1,22 @@
|
||||
{
|
||||
"presets": [
|
||||
["env",
|
||||
{
|
||||
"targets": {
|
||||
"browsers": "last 2 versions, > 1%, ie >= 6, Android >= 4, iOS >= 6, and_uc > 9",
|
||||
"node": "0.10"
|
||||
},
|
||||
"modules": false,
|
||||
"loose": false
|
||||
}],
|
||||
"stage-2"
|
||||
],
|
||||
"plugins": [
|
||||
["transform-runtime", {
|
||||
"helpers": false,
|
||||
"polyfill": false,
|
||||
"regenerator": false,
|
||||
"moduleName": "babel-runtime"
|
||||
}]
|
||||
]
|
||||
}
|
||||
@ -0,0 +1,12 @@
|
||||
root = true
|
||||
|
||||
[{*.js,*.css,*.html}]
|
||||
indent_style = space
|
||||
indent_size = 4
|
||||
end_of_line = lf
|
||||
charset = utf-8
|
||||
insert_final_newline = true
|
||||
|
||||
[{package.json,.*rc,*.yml}]
|
||||
indent_style = space
|
||||
indent_size = 2
|
||||
@ -0,0 +1 @@
|
||||
test
|
||||
@ -0,0 +1,45 @@
|
||||
module.exports = {
|
||||
root: true,
|
||||
|
||||
parserOptions: {
|
||||
sourceType: 'module',
|
||||
},
|
||||
|
||||
env: {
|
||||
browser: true,
|
||||
es6: true,
|
||||
node: true,
|
||||
},
|
||||
|
||||
extends: ['airbnb-base'],
|
||||
|
||||
rules: {
|
||||
'no-shadow': [
|
||||
'error',
|
||||
{
|
||||
allow: ['state'],
|
||||
},
|
||||
],
|
||||
// 'import/extensions': 'off',
|
||||
'import/extensions': [
|
||||
'error',
|
||||
'always',
|
||||
{
|
||||
js: 'never',
|
||||
},
|
||||
],
|
||||
'import/no-unresolved': 'off',
|
||||
'no-param-reassign': 'off',
|
||||
'consistent-return': 'off',
|
||||
'global-require': 'off',
|
||||
'import/no-dynamic-require': 'off',
|
||||
'import/no-extraneous-dependencies': 'off',
|
||||
|
||||
// 4 行空格缩进
|
||||
indent: ['error', 4, { SwitchCase: 1 }],
|
||||
|
||||
'max-len': ['error', { code: 150 }],
|
||||
|
||||
'operator-linebreak': 0,
|
||||
},
|
||||
};
|
||||
@ -0,0 +1,3 @@
|
||||
node_modules
|
||||
dist
|
||||
.DS_Store
|
||||
@ -0,0 +1,11 @@
|
||||
node_modules
|
||||
config
|
||||
demo
|
||||
src
|
||||
test
|
||||
.babelrc
|
||||
.editorconfig
|
||||
.travis.yml
|
||||
CHANGELOG.md
|
||||
package-lock.json
|
||||
TODO.md
|
||||
@ -0,0 +1,3 @@
|
||||
language: node_js
|
||||
node_js:
|
||||
- "8"
|
||||
@ -0,0 +1 @@
|
||||
# Change Log
|
||||
@ -0,0 +1,128 @@
|
||||
# [qrcode-decoder](https://github.com/yugasun/qrcode-decoder)
|
||||
|
||||
[](https://github.com/yugasun/qrcode-decoder/blob/master/LICENSE)
|
||||
[](https://travis-ci.org/yugasun/qrcode-decoder)
|
||||
[](http://www.npmtrends.com/qrcode-decoder)
|
||||
|
||||
[简体中文](./README.zh-CN.md) | English
|
||||
|
||||
A tool for decoding qrcode.
|
||||
|
||||
## Directory
|
||||
|
||||
```
|
||||
.
|
||||
├── demo code demo
|
||||
├── dist build output
|
||||
├── doc docs
|
||||
├── src source code
|
||||
├── test unit test
|
||||
├── CHANGELOG.md change log
|
||||
└── TODO.md todo list
|
||||
```
|
||||
|
||||
## Guide
|
||||
|
||||
Use `npm` to install.
|
||||
|
||||
```bash
|
||||
$ npm install --save qrcode-decoder
|
||||
```
|
||||
|
||||
Using in webpack:
|
||||
|
||||
```js
|
||||
import QrcodeDecoder from 'qrcode-decoder';
|
||||
```
|
||||
|
||||
Using in browser:
|
||||
|
||||
```html
|
||||
<script src="node_modules/qrcode-decoder/dist/index.aio.js"></script>
|
||||
```
|
||||
|
||||
## Demo
|
||||
|
||||
### QrcodeDecoder()
|
||||
|
||||
User `new` to create a decoder object.
|
||||
|
||||
```javascript
|
||||
var qr = new QrcodeDecoder();
|
||||
```
|
||||
|
||||
#### decodeFromImage(img, options)
|
||||
|
||||
Decodes an image from url or an `<img>` element with a `src` attribute set.
|
||||
|
||||
```javascript
|
||||
qr.decodeFromImage(img).then((res) => {
|
||||
console.log(res);
|
||||
});
|
||||
```
|
||||
|
||||
[Demo](./demo/image.html)
|
||||
|
||||
#### decodeFromVideo(videoElem, options)
|
||||
|
||||
Decodes directly from a video with a well specified `src` attribute
|
||||
|
||||
```javascript
|
||||
qr.decodeFromVideo(videoElement).then((res) => {
|
||||
console.log(res);
|
||||
});
|
||||
```
|
||||
|
||||
[Demo](./demo/video.html)
|
||||
|
||||
#### decodeFromCamera(videoElem, options)
|
||||
|
||||
Decodes from a videoElement.
|
||||
|
||||
```javascript
|
||||
qr.decodeFromCamera(videoElem).then((res) => {
|
||||
console.log(res);
|
||||
});
|
||||
```
|
||||
|
||||
[Demo](./demo/camera.html)
|
||||
|
||||
#### stop()
|
||||
|
||||
Stops the current `qr` from searching for a QRCode.
|
||||
|
||||
## Develop
|
||||
|
||||
Install dependencies:
|
||||
|
||||
```bash
|
||||
$ npm install
|
||||
```
|
||||
|
||||
Build code:
|
||||
|
||||
```bash
|
||||
$ npm run build
|
||||
```
|
||||
|
||||
Run unit test:
|
||||
|
||||
```bash
|
||||
$ npm test
|
||||
```
|
||||
|
||||
Modify version in `package.json`, run `release` script:
|
||||
|
||||
```bash
|
||||
$ npm run release
|
||||
```
|
||||
|
||||
Publish
|
||||
|
||||
```bash
|
||||
$ npm publish
|
||||
```
|
||||
|
||||
## License
|
||||
|
||||
[MIT](./LICENSE)
|
||||
@ -0,0 +1,5 @@
|
||||
# TODO
|
||||
|
||||
Rewrite unit test.
|
||||
|
||||
- [] Rewrite unit test.
|
||||
@ -0,0 +1,32 @@
|
||||
// rollup.config.js
|
||||
|
||||
var babel = require('rollup-plugin-babel');
|
||||
var nodeResolve = require('rollup-plugin-node-resolve');
|
||||
var commonjs = require('rollup-plugin-commonjs');
|
||||
|
||||
var common = require('./rollup.js');
|
||||
|
||||
export default {
|
||||
input: 'src/index.js',
|
||||
output: {
|
||||
file: 'dist/index.aio.js',
|
||||
format: 'umd',
|
||||
// 如果不同时使用 export 与 export default 可打开legacy
|
||||
// legacy: true,
|
||||
// name: common.name,
|
||||
name: 'QrcodeDecoder',
|
||||
banner: common.banner,
|
||||
},
|
||||
plugins: [
|
||||
nodeResolve({
|
||||
main: true,
|
||||
}),
|
||||
commonjs({
|
||||
include: 'node_modules/**',
|
||||
}),
|
||||
babel({
|
||||
runtimeHelpers: true,
|
||||
exclude: 'node_modules/**',
|
||||
}),
|
||||
],
|
||||
};
|
||||
@ -0,0 +1,7 @@
|
||||
import config from './rollup.config';
|
||||
|
||||
// ES output
|
||||
config.output.format = 'es';
|
||||
config.output.file = 'dist/index.esm.js';
|
||||
|
||||
export default config;
|
||||
@ -0,0 +1,21 @@
|
||||
// rollup.config.js
|
||||
|
||||
var babel = require('rollup-plugin-babel');
|
||||
var common = require('./rollup.js');
|
||||
|
||||
export default {
|
||||
input: 'src/index.js',
|
||||
output: {
|
||||
file: 'dist/index.js',
|
||||
format: 'cjs',
|
||||
// 如果不同时使用 export 与 export default 可打开legacy
|
||||
// legacy: true,
|
||||
banner: common.banner,
|
||||
},
|
||||
plugins: [
|
||||
babel({
|
||||
runtimeHelpers: true,
|
||||
exclude: 'node_modules/**'
|
||||
})
|
||||
]
|
||||
};
|
||||
@ -0,0 +1,17 @@
|
||||
var pkg = require('../package.json');
|
||||
|
||||
// 兼容 qrcode-decoder 和 @yugasun/qrcode-decoder
|
||||
var name = pkg.name.split('/').pop();
|
||||
var version = pkg.version;
|
||||
|
||||
var banner =
|
||||
`/*!
|
||||
* qrcode-decoder ${version} (https://github.com/yugasun/qrcode-decoder)
|
||||
* API https://github.com/yugasun/qrcode-decoder/blob/master/doc/api.md
|
||||
* Copyright 2017-${(new Date).getFullYear()} yugasun. All Rights Reserved
|
||||
* Licensed under MIT (https://github.com/yugasun/qrcode-decoder/blob/master/LICENSE)
|
||||
*/
|
||||
`;
|
||||
|
||||
exports.name = name;
|
||||
exports.banner = banner;
|
||||
@ -0,0 +1,39 @@
|
||||
<!DOCTYPE html>
|
||||
<html>
|
||||
<head>
|
||||
<title>QrcodeDecoder - Camera</title>
|
||||
</head>
|
||||
<body>
|
||||
<button id="start">Start</button> <button id="stop">Stop</button><br />
|
||||
<span id="result">Click start to scan qrcode.</span><br />
|
||||
<hr />
|
||||
<video id="video" autoplay></video>
|
||||
|
||||
<script src="../dist/index.aio.js"></script>
|
||||
<script type="text/javascript">
|
||||
function main() {
|
||||
var qr = new QrcodeDecoder();
|
||||
var video = document.querySelector('#video');
|
||||
var start = document.querySelector('#start');
|
||||
var stop = document.querySelector('#stop');
|
||||
var result = document.querySelector('#result');
|
||||
async function startScan() {
|
||||
if (!qr.isCanvasSupported()) {
|
||||
alert("Your browser doesn't match the required specs.");
|
||||
throw new Error('Canvas and getUserMedia are required');
|
||||
}
|
||||
|
||||
let code = await qr.decodeFromCamera(video);
|
||||
console.log('code', code);
|
||||
result.innerText = "Result: " + code.data;
|
||||
}
|
||||
start.onclick = startScan;
|
||||
|
||||
stop.onclick = function() {
|
||||
qr.stop();
|
||||
};
|
||||
}
|
||||
main();
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
@ -0,0 +1,31 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="UTF-8" />
|
||||
<title>QrcodeDecoder - Image</title>
|
||||
</head>
|
||||
<body>
|
||||
<button id="decode">Decode!</button><br>
|
||||
<span id="result"></span><br>
|
||||
<!-- <img src="../test/assets/qrcode.png" alt="qr code" /> -->
|
||||
<script src="../dist/index.aio.js"></script>
|
||||
<script type="module">
|
||||
function main() {
|
||||
var qr = new QrcodeDecoder();
|
||||
|
||||
var btn = document.querySelector('button#decode');
|
||||
var img = document.querySelector('img');
|
||||
var result = document.querySelector('#result');
|
||||
|
||||
btn.onclick = async () => {
|
||||
// you can also decode from image path
|
||||
const code = await qr.decodeFromImage('../test/assets/qrcode.png');
|
||||
// const code = qr.decodeFromImage(img);
|
||||
console.log(code);
|
||||
result.innerText = code.data;
|
||||
};
|
||||
}
|
||||
main();
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
@ -0,0 +1,18 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="UTF-8">
|
||||
<title>QrcodeDecoder</title>
|
||||
</head>
|
||||
<body>
|
||||
|
||||
<h1>QrcodeDecoder</h1>
|
||||
<h2>Examples</h2>
|
||||
<ul>
|
||||
<li><a href="camera.html">Camera</a></li>
|
||||
<li><a href="image.html">Image</a></li>
|
||||
<li><a href="video.html">Video</a></li>
|
||||
</ul>
|
||||
|
||||
</body>
|
||||
</html>
|
||||
@ -0,0 +1,39 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="UTF-8" />
|
||||
<title>QrcodeDecoder - Video</title>
|
||||
</head>
|
||||
<body>
|
||||
<button id="start">Start</button> <button id="stop">Stop</button><br />
|
||||
<span id="result">Click start to scan qrcode.</span><br />
|
||||
|
||||
<video src="../test/assets/qrcode-video.mp4"></video>
|
||||
|
||||
<script src="../dist/index.aio.js"></script>
|
||||
<script type="text/javascript">
|
||||
function main() {
|
||||
var video = document.querySelector('video');
|
||||
var result = document.querySelector('#result');
|
||||
var start = document.querySelector('#start');
|
||||
var stop = document.querySelector('#stop');
|
||||
var qr = new QrcodeDecoder();
|
||||
|
||||
start.onclick = startScan;
|
||||
|
||||
stop.onclick = function() {
|
||||
qr.stop();
|
||||
video.pause();
|
||||
};
|
||||
|
||||
async function startScan() {
|
||||
video.play();
|
||||
const code = await qr.decodeFromVideo(video);
|
||||
console.log('code', code);
|
||||
result.innerText = 'Result: ' + code.data;
|
||||
}
|
||||
}
|
||||
main();
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
@ -0,0 +1,49 @@
|
||||
# Api
|
||||
|
||||
### QrcodeDecoder()
|
||||
|
||||
User `new` to create a decoder object.
|
||||
|
||||
```javascript
|
||||
var qr = new QrcodeDecoder();
|
||||
```
|
||||
|
||||
#### decodeFromImage(img, options)
|
||||
|
||||
Decodes an image from url or an `<img>` element with a `src` attribute set.
|
||||
|
||||
```javascript
|
||||
qr.decodeFromImage(img).then((res) => {
|
||||
console.log(res);
|
||||
});
|
||||
```
|
||||
|
||||
[Demo](./demo/image.html)
|
||||
|
||||
#### decodeFromVideo(videoElem, options)
|
||||
|
||||
Decodes directly from a video with a well specified `src` attribute
|
||||
|
||||
```javascript
|
||||
qr.decodeFromVideo(videoElement).then((res) => {
|
||||
console.log(res);
|
||||
});
|
||||
```
|
||||
|
||||
[Demo](./demo/video.html)
|
||||
|
||||
#### decodeFromCamera(videoElem, options)
|
||||
|
||||
Decodes from a videoElement.
|
||||
|
||||
```javascript
|
||||
qr.decodeFromCamera(videoElem).then((res) => {
|
||||
console.log(res);
|
||||
});
|
||||
```
|
||||
|
||||
[Demo](./demo/camera.html)
|
||||
|
||||
#### stop()
|
||||
|
||||
Stops the current `qr` from searching for a QRCode.
|
||||
@ -0,0 +1,49 @@
|
||||
# Api
|
||||
|
||||
### QrcodeDecoder()
|
||||
|
||||
通过 `new` 关键字生成处理对象。
|
||||
|
||||
```javascript
|
||||
var qr = new QrcodeDecoder();
|
||||
```
|
||||
|
||||
#### decodeFromImage(img, options)
|
||||
|
||||
解析页面中的图片二维码。
|
||||
|
||||
```javascript
|
||||
qr.decodeFromImage(img).then((res) => {
|
||||
console.log(res);
|
||||
});
|
||||
```
|
||||
|
||||
[Demo](./demo/image.html)
|
||||
|
||||
#### decodeFromVideo(videoElem, options)
|
||||
|
||||
解析页面中的视频中的二维码。
|
||||
|
||||
```javascript
|
||||
qr.decodeFromVideo(videoElement).then((res) => {
|
||||
console.log(res);
|
||||
});
|
||||
```
|
||||
|
||||
[Demo](./demo/video.html)
|
||||
|
||||
#### decodeFromCamera(videoElem, options)
|
||||
|
||||
通过获取摄像头视频来扫描解析二维码。
|
||||
|
||||
```javascript
|
||||
qr.decodeFromCamera(videoElem).then((res) => {
|
||||
console.log(res);
|
||||
});
|
||||
```
|
||||
|
||||
[Demo](./demo/camera.html)
|
||||
|
||||
#### stop()
|
||||
|
||||
停止当前视频捕获。
|
||||
@ -0,0 +1,54 @@
|
||||
{
|
||||
"name": "qrcode-decoder",
|
||||
"version": "1.1.0",
|
||||
"description": "Tool for decoding qrcode",
|
||||
"main": "dist/index.js",
|
||||
"jsnext:main": "dist/index.esm.js",
|
||||
"module": "dist/index.esm.js",
|
||||
"sideEffects": false,
|
||||
"scripts": {
|
||||
"clean": "rimraf ./dist",
|
||||
"lint": "eslint src",
|
||||
"build:self": "rollup -c config/rollup.config.js",
|
||||
"build:esm": "rollup -c config/rollup.config.esm.js",
|
||||
"build:aio": "rollup -c config/rollup.config.aio.js",
|
||||
"build": "npm run clean && npm run build:self && npm run build:esm && npm run build:aio",
|
||||
"test": "npm run lint && npm run build",
|
||||
"zuul-test": "zuul --local 8080 --ui mocha-bdd -- test/test.js",
|
||||
"release": "git commit -am $npm_package_version && git tag $npm_package_version && git push && git push --tags"
|
||||
},
|
||||
"author": "yugasun",
|
||||
"license": "MIT",
|
||||
"repository": {
|
||||
"type": "git",
|
||||
"url": "git://github.com/yugasun/qrcode-decoder.git"
|
||||
},
|
||||
"bugs": {
|
||||
"url": "https://github.com/yugasun/qrcode-decoder/issues"
|
||||
},
|
||||
"devDependencies": {
|
||||
"babel-core": "6.26.0",
|
||||
"babel-plugin-transform-runtime": "6.23.0",
|
||||
"babel-preset-env": "1.6.1",
|
||||
"babel-preset-stage-2": "^6.24.1",
|
||||
"cdkit": "1.1.0",
|
||||
"es5-shim": "4.5.10",
|
||||
"eslint": "4.18.2",
|
||||
"eslint-config-airbnb-base": "^13.1.0",
|
||||
"eslint-plugin-import": "^2.14.0",
|
||||
"expect.js": "0.3.1",
|
||||
"jsdom": "^13.0.0",
|
||||
"mocha": "3.5.3",
|
||||
"mocha-jsdom": "^2.0.0",
|
||||
"rimraf": "2.6.2",
|
||||
"rollup": "0.57.1",
|
||||
"rollup-plugin-babel": "3.0.3",
|
||||
"rollup-plugin-commonjs": "8.3.0",
|
||||
"rollup-plugin-node-resolve": "3.0.3",
|
||||
"zuul": "^3.12.0"
|
||||
},
|
||||
"dependencies": {
|
||||
"babel-polyfill": "^6.26.0",
|
||||
"jsqr": "^1.1.1"
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,370 @@
|
||||
import 'babel-polyfill';
|
||||
import jsQR from 'jsqr';
|
||||
/* eslint-disable no-underscore-dangle */
|
||||
class QrcodeDecoder {
|
||||
/**
|
||||
* Constructor for QrcodeDecoder
|
||||
*/
|
||||
constructor() {
|
||||
this.timerCapture = null;
|
||||
this.canvasElem = null;
|
||||
this.gCtx = null;
|
||||
this.stream = null;
|
||||
this.videoElem = null;
|
||||
this.getUserMediaHandler = null;
|
||||
this.videoConstraints = { video: true, audio: false };
|
||||
|
||||
this.defaultOption = { inversionAttempts: 'attemptBoth' };
|
||||
}
|
||||
|
||||
/**
|
||||
* Verifies if canvas element is supported.
|
||||
*/
|
||||
/* eslint-disable class-methods-use-this */
|
||||
isCanvasSupported() {
|
||||
const elem = document.createElement('canvas');
|
||||
return !!(elem.getContext && elem.getContext('2d'));
|
||||
}
|
||||
|
||||
/**
|
||||
* draw lint
|
||||
*
|
||||
* @param {object} begin line begin point
|
||||
* @param {object} end line end point
|
||||
* @param {string} color color string
|
||||
*/
|
||||
// _drawLine(begin, end, color) {
|
||||
// this.gCtx.beginPath();
|
||||
// this.gCtx.moveTo(begin.x, begin.y);
|
||||
// this.gCtx.lineTo(end.x, end.y);
|
||||
// this.gCtx.lineWidth = 4;
|
||||
// this.gCtx.strokeStyle = color;
|
||||
// this.gCtx.stroke();
|
||||
// }
|
||||
|
||||
/**
|
||||
* create qrcode marker
|
||||
*
|
||||
* @param {object} code jsqr parse code object
|
||||
*/
|
||||
// _createQrcodeMark(code) {
|
||||
// this._drawLine(
|
||||
// code.location.topLeftCorner,
|
||||
// code.location.topRightCorner,
|
||||
// '#FF3B58',
|
||||
// );
|
||||
// this._drawLine(
|
||||
// code.location.topRightCorner,
|
||||
// code.location.bottomRightCorner,
|
||||
// '#FF3B58',
|
||||
// );
|
||||
// this._drawLine(
|
||||
// code.location.bottomRightCorner,
|
||||
// code.location.bottomLeftCorner,
|
||||
// '#FF3B58',
|
||||
// );
|
||||
// this._drawLine(
|
||||
// code.location.bottomLeftCorner,
|
||||
// code.location.topLeftCorner,
|
||||
// '#FF3B58',
|
||||
// );
|
||||
// }
|
||||
|
||||
_createImageData(target, width, height) {
|
||||
if (!this.canvasElem) {
|
||||
this._prepareCanvas(width, height);
|
||||
}
|
||||
|
||||
this.gCtx.clearRect(0, 0, width, height);
|
||||
this.gCtx.drawImage(target, 0, 0, width, height);
|
||||
|
||||
const imageData = this.gCtx.getImageData(
|
||||
0,
|
||||
0,
|
||||
this.canvasElem.width,
|
||||
this.canvasElem.height,
|
||||
);
|
||||
|
||||
return imageData;
|
||||
}
|
||||
|
||||
/**
|
||||
* Prepares the canvas element (which will
|
||||
* receive the image from the camera and provide
|
||||
* what the algorithm needs for checking for a
|
||||
* QRCode and then decoding it.)
|
||||
*
|
||||
*
|
||||
* @param {DOMElement} canvasElem the canvas
|
||||
* element
|
||||
* @param {number} width The width that
|
||||
* the canvas element
|
||||
* should have
|
||||
* @param {number} height The height that
|
||||
* the canvas element
|
||||
* should have
|
||||
* @return {DOMElement} the canvas
|
||||
* after the resize if width and height
|
||||
* provided.
|
||||
*/
|
||||
_prepareCanvas(width, height) {
|
||||
if (!this.canvasElem) {
|
||||
this.canvasElem = document.createElement('canvas');
|
||||
this.canvasElem.style.width = `${width}px`;
|
||||
this.canvasElem.style.height = `${height}px`;
|
||||
this.canvasElem.width = width;
|
||||
this.canvasElem.height = height;
|
||||
}
|
||||
|
||||
this.gCtx = this.canvasElem.getContext('2d');
|
||||
}
|
||||
|
||||
/**
|
||||
* Based on the video dimensions and the canvas
|
||||
* that was previously generated captures the
|
||||
* video/image source and then paints into the
|
||||
* canvas so that the decoder is able to work as
|
||||
* it expects.
|
||||
* @param {DOMElement} videoElem <video> dom element
|
||||
* @param {Object} options options (optional) - Additional options.
|
||||
* inversionAttempts - (attemptBoth (default), dontInvert, onlyInvert, or invertFirst)
|
||||
* refer to jsqr options: https://github.com/cozmo/jsQR
|
||||
*/
|
||||
async _captureToCanvas(videoElem, options) {
|
||||
if (this.timerCapture) {
|
||||
clearTimeout(this.timerCapture);
|
||||
}
|
||||
const proms = () => {
|
||||
const p = new Promise(async (resolve) => {
|
||||
let code;
|
||||
if (videoElem.videoWidth && videoElem.videoHeight) {
|
||||
const imageData = this._createImageData(
|
||||
videoElem,
|
||||
videoElem.videoWidth,
|
||||
videoElem.videoHeight,
|
||||
);
|
||||
|
||||
code = jsQR(
|
||||
imageData.data,
|
||||
imageData.width,
|
||||
imageData.height,
|
||||
options,
|
||||
);
|
||||
|
||||
if (code) {
|
||||
resolve(code);
|
||||
} else {
|
||||
this.timerCapture = setTimeout(async () => {
|
||||
code = await this._captureToCanvas(
|
||||
videoElem,
|
||||
options,
|
||||
);
|
||||
resolve(code);
|
||||
}, 500);
|
||||
}
|
||||
} else {
|
||||
this.timerCapture = setTimeout(async () => {
|
||||
code = await this._captureToCanvas(videoElem, options);
|
||||
resolve(code);
|
||||
}, 500);
|
||||
}
|
||||
});
|
||||
|
||||
return p;
|
||||
};
|
||||
|
||||
const result = await proms();
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
/**
|
||||
* Prepares the video element for receiving
|
||||
* camera's input. Releases a stream if there
|
||||
* was any (resets).
|
||||
*
|
||||
* @param {DOMElement} videoElem <video> dom element
|
||||
* @param {Object} options options (optional) - Additional options.
|
||||
* inversionAttempts - (attemptBoth (default), dontInvert, onlyInvert, or invertFirst)
|
||||
* refer to jsqr options: https://github.com/cozmo/jsQR
|
||||
*/
|
||||
async decodeFromCamera(videoElem, options = {}) {
|
||||
const opts = {
|
||||
...this.defaultOption,
|
||||
...options,
|
||||
};
|
||||
|
||||
this.stop();
|
||||
if (!navigator.mediaDevices.getUserMedia) {
|
||||
throw new Error("Couldn't get video from camera");
|
||||
}
|
||||
|
||||
try {
|
||||
const stream = await navigator.mediaDevices.getUserMedia(
|
||||
this.videoConstraints,
|
||||
);
|
||||
videoElem.srcObject = stream;
|
||||
// videoElem.src = window.URL.createObjectURL(stream);
|
||||
this.videoElem = videoElem;
|
||||
this.stream = stream;
|
||||
this.videoDimensions = false;
|
||||
|
||||
const code = await this.decodeFromVideo(videoElem, opts);
|
||||
return code;
|
||||
} catch (e) {
|
||||
throw e;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Prepares the video element for video file.
|
||||
*
|
||||
* @param {DOMElement} videoElem <video> dom element
|
||||
* @param {Object} options options (optional) - Additional options.
|
||||
* inversionAttempts - (attemptBoth (default), dontInvert, onlyInvert, or invertFirst)
|
||||
* refer to jsqr options: https://github.com/cozmo/jsQR
|
||||
*/
|
||||
async decodeFromVideo(videoElem, options = {}) {
|
||||
const opts = {
|
||||
...this.defaultOption,
|
||||
...options,
|
||||
};
|
||||
try {
|
||||
this.videoElem = videoElem;
|
||||
const code = await this._captureToCanvas(videoElem, opts);
|
||||
return code;
|
||||
} catch (e) {
|
||||
throw e;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Decodes an image from its src.
|
||||
* @param {DOMElement} imageElem
|
||||
* @param {Object} options options (optional) - Additional options.
|
||||
* inversionAttempts - (attemptBoth (default), dontInvert, onlyInvert, or invertFirst)
|
||||
* refer to jsqr options: https://github.com/cozmo/jsQR
|
||||
*/
|
||||
async decodeFromImage(img, options = {}) {
|
||||
let imgDom;
|
||||
const opts = {
|
||||
...this.defaultOption,
|
||||
...options,
|
||||
};
|
||||
if (+img.nodeType > 0) {
|
||||
if (!img.src) {
|
||||
throw new Error('The ImageElement must contain a src');
|
||||
}
|
||||
imgDom = img;
|
||||
} else if (typeof img === 'string') {
|
||||
imgDom = document.createElement('img');
|
||||
imgDom.src = img;
|
||||
// const proms = () => new Promise((resolve) => {
|
||||
// imgDom.onload = () => resolve(true);
|
||||
// });
|
||||
// await proms();
|
||||
}
|
||||
|
||||
let code = false;
|
||||
if (imgDom) {
|
||||
code = this._decodeFromImageElm(imgDom, opts);
|
||||
}
|
||||
return code;
|
||||
}
|
||||
|
||||
_decodeFromImageElm(imgObj, options = {}) {
|
||||
const opts = {
|
||||
...this.defaultOption,
|
||||
...options,
|
||||
};
|
||||
const imageData = this._createImageData(
|
||||
imgObj,
|
||||
imgObj.width,
|
||||
imgObj.height,
|
||||
);
|
||||
|
||||
const code = jsQR(
|
||||
imageData.data,
|
||||
imageData.width,
|
||||
imageData.height,
|
||||
opts,
|
||||
);
|
||||
|
||||
if (code) {
|
||||
return code;
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Releases a video stream that was being
|
||||
* captured by prepareToVideo
|
||||
*/
|
||||
stop() {
|
||||
if (this.stream) {
|
||||
const track = this.stream.getTracks()[0];
|
||||
track.stop();
|
||||
this.stream = undefined;
|
||||
}
|
||||
|
||||
if (this.timerCapture) {
|
||||
clearTimeout(this.timerCapture);
|
||||
this.timerCapture = undefined;
|
||||
}
|
||||
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the sourceId for the camera to use.
|
||||
*
|
||||
* The sourceId can be found using the
|
||||
* getVideoSources function on a browser that
|
||||
* supports it (currently only Chrome).
|
||||
*
|
||||
* @param {String} sourceId The id of the
|
||||
* video source you want to use (or false to use
|
||||
* the current default)
|
||||
*/
|
||||
setSourceId(sourceId) {
|
||||
if (sourceId) {
|
||||
this.videoConstraints.video = {
|
||||
optional: [{ sourceId }],
|
||||
};
|
||||
} else {
|
||||
this.videoConstraints.video = true;
|
||||
}
|
||||
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets a list of all available video sources on
|
||||
* the current device.
|
||||
* @param {Function} cb callback to be resolved
|
||||
* with error (first param) ou results (second
|
||||
* param) - a list containing all of the sources
|
||||
* that are of the 'video' kind.
|
||||
*/
|
||||
getVideoSources() {
|
||||
const sources = [];
|
||||
|
||||
if (!(MediaStreamTrack && MediaStreamTrack.getSources)) {
|
||||
throw new Error(
|
||||
'Current browser doest not support MediaStreamTrack.getSources',
|
||||
);
|
||||
}
|
||||
|
||||
MediaStreamTrack.getSources((sourceInfos) => {
|
||||
sourceInfos.forEach((sourceInfo) => {
|
||||
if (sourceInfo.kind === 'video') {
|
||||
sources.push(sourceInfo);
|
||||
}
|
||||
});
|
||||
});
|
||||
return sources;
|
||||
}
|
||||
}
|
||||
|
||||
export default QrcodeDecoder;
|
||||
@ -0,0 +1 @@
|
||||
make test for your own private key
|
||||
Binary file not shown.
|
After Width: | Height: | Size: 23 KiB |
Binary file not shown.
Binary file not shown.
|
After Width: | Height: | Size: 935 B |
@ -0,0 +1,37 @@
|
||||
<!DOCTYPE html>
|
||||
<html>
|
||||
|
||||
<head>
|
||||
<title>Mocha</title>
|
||||
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
||||
<link rel="stylesheet" href="../../node_modules/mocha/mocha.css" />
|
||||
</head>
|
||||
|
||||
<body>
|
||||
<div id="mocha"></div>
|
||||
<script src="../../node_modules/es5-shim/es5-shim.js"></script>
|
||||
<script src="../../node_modules/es5-shim/es5-sham.js"></script>
|
||||
|
||||
<script src="../../node_modules/mocha/mocha.js"></script>
|
||||
<script src="../../node_modules/expect.js/index.js"></script>
|
||||
<script>
|
||||
mocha.setup('bdd');
|
||||
</script>
|
||||
<script src="../../dist/index.aio.js"></script>
|
||||
<script>
|
||||
var libs = {
|
||||
'expect.js': expect,
|
||||
'../dist/index.js': window['qrcode-decoder']
|
||||
};
|
||||
var require = function(path) {
|
||||
return libs[path];
|
||||
}
|
||||
</script>
|
||||
<script src="../test.js"></script>
|
||||
<script>
|
||||
mocha.run();
|
||||
</script>
|
||||
</body>
|
||||
|
||||
</html>
|
||||
@ -0,0 +1,57 @@
|
||||
const expect = require('expect.js');
|
||||
const QrcodeDecoder = require('../dist/index.js');
|
||||
|
||||
describe('QrcodeDecoder', function () {
|
||||
// global.mocha.checkLeaks = false;
|
||||
this.timeout(180000);
|
||||
|
||||
it('be defined', function () {
|
||||
expect(QrcodeDecoder).to.be.ok();
|
||||
});
|
||||
|
||||
var qr;
|
||||
|
||||
beforeEach(function () {
|
||||
qr = new QrcodeDecoder();
|
||||
});
|
||||
|
||||
describe('decodeFromImage', function () {
|
||||
it('decode image from img element', function (done) {
|
||||
const img = document.createElement('img');
|
||||
img.src = 'test/assets/qrcode.png';
|
||||
img.onload = async function () {
|
||||
const result = await qr.decodeFromImage(img);
|
||||
expect(result.data).to.equal('192.168.1.13:3000');
|
||||
done();
|
||||
}
|
||||
|
||||
});
|
||||
|
||||
it('decode image from img url', async function () {
|
||||
const result = await qr.decodeFromImage('test/assets/qrcode.png');
|
||||
expect(result.data).to.equal('192.168.1.13:3000');
|
||||
});
|
||||
|
||||
it('throw if no src in image element', async function (done) {
|
||||
var img = document.createElement('img');
|
||||
try {
|
||||
await qr.decodeFromImage(img);
|
||||
} catch(e) {
|
||||
expect(e.message).to.equal('The ImageElement must contain a src')
|
||||
done();
|
||||
}
|
||||
});
|
||||
});
|
||||
|
||||
describe('decodeFromCamera', function () {
|
||||
it('decode from a video with qrcode', async function () {
|
||||
const video = document.createElement('video');
|
||||
video.setAttribute('autoplay', true);
|
||||
video.setAttribute('src', 'test/assets/qrcode-video.mp4');
|
||||
|
||||
const result = await qr.decodeFromVideo(video);
|
||||
expect(result.data).to.equal('192.168.1.13:3000');
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
Loading…
Reference in New Issue