feat: refactor with ts
yugasun
5 years ago
committed by
Yuga Sun
parent
2737d1970b
commit
d55e4ddcef
@ -1,22 +1,71 @@
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{
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"presets": [
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["env",
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[
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"@babel/env",
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{
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"modules": false,
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"targets": {
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"browsers": "last 2 versions, > 1%, ie >= 11",
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"node": "8.0"
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"browsers": [
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">0.25%"
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]
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},
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"modules": false,
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"loose": false
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}],
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"stage-2"
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"useBuiltIns": "usage"
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}
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],
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"@babel/typescript"
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],
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"env": {
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"development": {
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"plugins": [
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"@babel/transform-runtime"
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]
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},
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"production": {
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"plugins": [
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"@babel/transform-runtime",
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"transform-remove-console"
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]
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},
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"test": {
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"presets": [
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[
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"@babel/env",
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{
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"modules": "commonjs",
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"targets": {
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"node": "current"
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}
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}
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],
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"@babel/typescript"
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]
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}
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},
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"plugins": [
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["transform-runtime", {
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"helpers": false,
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"polyfill": false,
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"regenerator": false,
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"moduleName": "babel-runtime"
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}]
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"@babel/plugin-syntax-dynamic-import",
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"@babel/plugin-syntax-import-meta",
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"@babel/plugin-proposal-class-properties",
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"@babel/plugin-proposal-json-strings",
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[
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"@babel/plugin-proposal-decorators",
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{
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"legacy": true
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}
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],
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"@babel/plugin-proposal-function-sent",
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"@babel/plugin-proposal-export-namespace-from",
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"@babel/plugin-proposal-numeric-separator",
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"@babel/plugin-proposal-throw-expressions",
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"@babel/plugin-proposal-export-default-from",
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"@babel/plugin-proposal-logical-assignment-operators",
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"@babel/plugin-proposal-optional-chaining",
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[
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"@babel/plugin-proposal-pipeline-operator",
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{
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"proposal": "minimal"
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}
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],
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"@babel/plugin-proposal-nullish-coalescing-operator",
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"@babel/plugin-proposal-do-expressions"
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]
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}
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@ -1,12 +1,7 @@
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root = true
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[{*.js,*.css,*.html}]
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indent_style = space
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indent_size = 4
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end_of_line = lf
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charset = utf-8
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[*]
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insert_final_newline = true
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[{package.json,.*rc,*.yml}]
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[*.{js,ts}]
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indent_style = space
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indent_size = 2
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charset = utf-8
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@ -1 +0,0 @@
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test
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@ -1,45 +0,0 @@
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module.exports = {
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root: true,
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parserOptions: {
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sourceType: 'module',
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},
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env: {
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browser: true,
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es6: true,
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node: true,
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},
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extends: ['airbnb-base'],
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rules: {
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'no-shadow': [
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'error',
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{
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allow: ['state'],
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},
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],
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// 'import/extensions': 'off',
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'import/extensions': [
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'error',
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'always',
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{
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js: 'never',
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},
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],
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'import/no-unresolved': 'off',
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'no-param-reassign': 'off',
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'consistent-return': 'off',
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'global-require': 'off',
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'import/no-dynamic-require': 'off',
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'import/no-extraneous-dependencies': 'off',
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// 4 行空格缩进
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indent: ['error', 4, { SwitchCase: 1 }],
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'max-len': ['error', { code: 150 }],
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'operator-linebreak': 0,
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},
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};
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@ -1,3 +1,11 @@
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node_modules
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.DS_STORE
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lerna-debug.log
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yarn-error.log
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dist
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.DS_Store
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includes
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tsconfig.tsbuildinfo
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.env
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coverage
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yarn.lock
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.rpt2_cache
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@ -1,11 +1,22 @@
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node_modules
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config
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demo
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src
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*.map
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tests
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test
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.babelrc
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__tests__
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__test__
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.github
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.env*
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jest.config.js
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.eslintrc.js
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.eslintignore
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.prettierignore
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prettier.config.js
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release.config.js
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commitlint.config.js
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.editorconfig
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.travis.yml
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CHANGELOG.md
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package-lock.json
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TODO.md
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lerna.json
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tsconfig.tsbuildinfo
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tsconfig.json
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tsconfig.base.json
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.rpt2_cache
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.vscode
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@ -0,0 +1,9 @@
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# Development folders and files #
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#################################
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.tmp/
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node_modules/
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package.json
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.travis.yml
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dist
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@ -0,0 +1,14 @@
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{
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"printWidth": 80,
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"singleQuote": true,
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"trailingComma": "all",
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"arrowParens": "always",
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"overrides": [
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{
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"files": "*.json",
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"options": {
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"parser": "json"
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}
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}
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]
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}
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@ -1,3 +0,0 @@
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language: node_js
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node_js:
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- "8"
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@ -1 +0,0 @@
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# Change Log
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@ -1,52 +0,0 @@
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// rollup.config.js
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import babel from 'rollup-plugin-babel';
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import nodeResolve from 'rollup-plugin-node-resolve';
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import commonjs from 'rollup-plugin-commonjs';
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import { uglify } from 'rollup-plugin-uglify';
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import common from './rollup';
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const prod = process.env.NODE_ENV;
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export default {
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input: 'src/index.js',
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output: {
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file: prod ? 'dist/index.aio.min.js' : 'dist/index.aio.js',
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format: 'umd',
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// 如果不同时使用 export 与 export default 可打开legacy
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// legacy: true,
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// name: common.name,
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name: 'QrcodeDecoder',
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banner: common.banner,
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},
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plugins: [
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nodeResolve({
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main: true,
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}),
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commonjs({
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include: 'node_modules/**',
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}),
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babel({
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runtimeHelpers: true,
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exclude: 'node_modules/**',
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}),
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prod &&
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uglify({
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compress: {
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drop_debugger: true,
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drop_console: true,
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},
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output: {
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comments: (node, comment) => {
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if (comment.type === 'comment2') {
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// multiline comment
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return /@preserve|@license|@cc_on/i.test(
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comment.value,
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);
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}
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return false;
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},
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},
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}),
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],
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};
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@ -1,7 +0,0 @@
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import config from './rollup.config';
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// ES output
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config.output.format = 'es';
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config.output.file = 'dist/index.esm.js';
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export default config;
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@ -1,21 +0,0 @@
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// rollup.config.js
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import babel from 'rollup-plugin-babel';
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import common from './rollup';
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export default {
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input: 'src/index.js',
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output: {
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file: 'dist/index.js',
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format: 'cjs',
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// 如果不同时使用 export 与 export default 可打开legacy
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// legacy: true,
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banner: common.banner,
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},
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plugins: [
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babel({
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runtimeHelpers: true,
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exclude: 'node_modules/**',
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}),
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],
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};
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@ -1,18 +0,0 @@
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const pkg = require('../package.json');
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// 兼容 qrcode-decoder 和 @yugasun/qrcode-decoder
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const name = pkg.name.split('/').pop();
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const { version } = pkg;
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const banner = `/* @preserve
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* qrcode-decoder ${version} (https://github.com/yugasun/qrcode-decoder)
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* API https://github.com/yugasun/qrcode-decoder/blob/master/doc/api.md
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* Copyright 2017-${new Date().getFullYear()} yugasun. All Rights Reserved
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* Licensed under MIT (https://github.com/yugasun/qrcode-decoder/blob/master/LICENSE)
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*/
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`;
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export default {
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name,
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banner,
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};
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File diff suppressed because one or more lines are too long
File diff suppressed because it is too large
Load Diff
@ -0,0 +1,10 @@
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module.exports = {
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verbose: true,
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testTimeout: 60000,
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transform: {
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'^.+\\.tsx?$': 'ts-jest',
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},
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testRegex: '(/__tests__/.*\\.(test|spec))\\.tsx?$',
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testPathIgnorePatterns: ['/node_modules/', '/dist/', '/demo/'],
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moduleFileExtensions: ['ts', 'tsx', 'js', 'jsx', 'json', 'node'],
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};
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@ -0,0 +1,127 @@
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import * as path from 'path';
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import * as rollup from 'rollup';
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import resolve from 'rollup-plugin-node-resolve';
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import typescript2 from 'rollup-plugin-typescript2';
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import { uglify } from 'rollup-plugin-uglify';
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import globals from 'rollup-plugin-node-globals';
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import commonjs from 'rollup-plugin-commonjs';
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import ts from 'typescript';
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import { createLogger } from './logger';
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const logBundle = createLogger('bundle');
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const plugins: rollup.Plugin[] = [
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resolve({
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browser: true,
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jsnext: true,
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preferBuiltins: true,
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}),
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commonjs(),
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typescript2({
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tsconfig: path.join(__dirname, '..', 'tsconfig.json'),
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typescript: ts, // ensure we're using the same typescript (3.x) for rollup as for regular builds etc
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tsconfigOverride: {
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module: 'esnext',
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stripInternal: true,
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emitDeclarationOnly: false,
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composite: false,
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declaration: false,
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declarationMap: false,
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sourceMap: false,
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},
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}),
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];
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async function bundleEsm() {
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const bundle = await rollup.rollup({
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input: path.join(process.cwd(), 'src/index.ts'),
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plugins: [...plugins, globals()],
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external: ['jsqr'],
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});
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await bundle.write({
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file: 'dist/index.esm.js',
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name: 'QrcodeDecoder',
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format: 'esm',
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sourcemap: false,
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globals: {
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jsqr: 'jsqr',
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tslib: 'tslib',
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},
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});
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}
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async function bundleUmd() {
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const bundle = await rollup.rollup({
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input: path.join(process.cwd(), 'src/index.ts'),
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plugins: [...plugins],
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external: ['jsqr'],
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});
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await bundle.write({
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file: 'dist/index.js',
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exports: 'named',
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name: 'QrcodeDecoder',
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format: 'umd',
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sourcemap: false,
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globals: {
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jsqr: 'jsqr',
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tslib: 'tslib',
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},
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});
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}
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async function bundleAio() {
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const bundle = await rollup.rollup({
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input: path.join(process.cwd(), 'src/index.ts'),
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plugins: [
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...plugins,
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uglify({
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compress: {
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drop_debugger: true,
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drop_console: true,
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},
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}),
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],
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});
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await bundle.write({
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file: 'dist/index.min.js',
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name: 'QrcodeDecoder',
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format: 'iife',
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sourcemap: false,
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});
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}
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async function bundle() {
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try {
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const outputs = process.argv.slice(2)[0].split(',');
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logBundle(`Creating bundle`);
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if (outputs.indexOf('esm') === -1) {
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logBundle(`Skipping esm`);
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} else {
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logBundle(`Creating esm`);
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await bundleEsm();
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}
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if (outputs.indexOf('umd') === -1) {
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logBundle(`Skipping umd`);
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} else {
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logBundle(`Creating umd`);
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await bundleUmd();
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}
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if (outputs.indexOf('aio') === -1) {
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logBundle(`Skipping umd aio`);
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} else {
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logBundle(`Creating umd aio`);
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await bundleAio();
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}
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} catch (err) {
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logBundle('Failed to bundle:');
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logBundle(err);
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process.exit(1);
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}
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}
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bundle();
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@ -0,0 +1,16 @@
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import * as l from 'fancy-log';
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const log = <typeof import('fancy-log')>(<any>(<any>l).default || l);
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import * as c from 'chalk';
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const chalk = <import('chalk').Chalk>(c.default || c);
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export function createLogger(name: string): typeof log {
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const prefix = `> ${chalk.green(name)} `;
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const logger = <typeof log>log.bind(log, prefix);
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logger.info = log.info.bind(log, prefix);
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logger.dir = log.dir.bind(log, prefix);
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logger.warn = log.warn.bind(log, prefix);
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logger.error = log.error.bind(log, prefix);
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return logger;
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}
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export { chalk as c };
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@ -0,0 +1,8 @@
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{
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"compilerOptions": {
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"esModuleInterop": true,
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"module": "commonjs",
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"target": "es2015",
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"resolveJsonModule": true
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}
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}
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@ -1,376 +0,0 @@
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import 'babel-polyfill';
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import jsQR from 'jsqr';
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/* eslint-disable no-underscore-dangle */
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class QrcodeDecoder {
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/**
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* Constructor for QrcodeDecoder
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*/
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constructor() {
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this.timerCapture = null;
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this.canvasElem = null;
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this.gCtx = null;
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this.stream = null;
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this.videoElem = null;
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this.getUserMediaHandler = null;
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this.videoConstraints = { video: true, audio: false };
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this.defaultOption = { inversionAttempts: 'attemptBoth' };
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}
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/**
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* Verifies if canvas element is supported.
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*/
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/* eslint-disable class-methods-use-this */
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isCanvasSupported() {
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const elem = document.createElement('canvas');
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return !!(elem.getContext && elem.getContext('2d'));
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}
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/**
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* draw lint
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*
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* @param {object} begin line begin point
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* @param {object} end line end point
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* @param {string} color color string
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*/
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// _drawLine(begin, end, color) {
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// this.gCtx.beginPath();
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// this.gCtx.moveTo(begin.x, begin.y);
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// this.gCtx.lineTo(end.x, end.y);
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// this.gCtx.lineWidth = 4;
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// this.gCtx.strokeStyle = color;
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// this.gCtx.stroke();
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// }
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/**
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* create qrcode marker
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*
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* @param {object} code jsqr parse code object
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*/
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// _createQrcodeMark(code) {
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// this._drawLine(
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// code.location.topLeftCorner,
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// code.location.topRightCorner,
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// '#FF3B58',
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// );
|
||||
// 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;
|
||||
if (options.crossOrigin) {
|
||||
imgDom.crossOrigin = options.crossOrigin;
|
||||
}
|
||||
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;
|
||||
|
||||
// fix: clear black bg after camera capture
|
||||
this.videoElem.srcObject = null;
|
||||
}
|
||||
|
||||
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 +1,320 @@
|
||||
import { Options } from 'jsqr';
|
||||
import jsQR from 'jsqr';
|
||||
|
||||
class QrcodeDecoder {
|
||||
timerCapture: null | NodeJS.Timeout;
|
||||
canvasElem: null | HTMLCanvasElement;
|
||||
gCtx: null | CanvasRenderingContext2D;
|
||||
stream: null | MediaStream;
|
||||
videoElem: null | HTMLVideoElement;
|
||||
getUserMediaHandler: null;
|
||||
videoConstraints: MediaStreamConstraints;
|
||||
defaultOption: Options;
|
||||
|
||||
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.
|
||||
*/
|
||||
isCanvasSupported() {
|
||||
const elem = document.createElement('canvas');
|
||||
return !!(elem.getContext && elem.getContext('2d'));
|
||||
}
|
||||
|
||||
_createImageData(target: CanvasImageSource, width: number, height: number) {
|
||||
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: number, height: number) {
|
||||
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: HTMLVideoElement, options: 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: HTMLVideoElement, 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;
|
||||
|
||||
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: HTMLVideoElement, 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: HTMLImageElement,
|
||||
options: { crossOrigin?: string } = {},
|
||||
) {
|
||||
let imgDom: HTMLImageElement | null = null;
|
||||
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;
|
||||
if (options.crossOrigin) {
|
||||
imgDom.crossOrigin = options.crossOrigin;
|
||||
}
|
||||
const proms = () =>
|
||||
new Promise((resolve) => {
|
||||
imgDom!.onload = () => resolve(true);
|
||||
});
|
||||
await proms();
|
||||
}
|
||||
|
||||
let code = null;
|
||||
if (imgDom) {
|
||||
code = this._decodeFromImageElm(imgDom, opts);
|
||||
}
|
||||
return code;
|
||||
}
|
||||
|
||||
_decodeFromImageElm(imgObj: HTMLImageElement, options = {}) {
|
||||
const opts: Options = {
|
||||
...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 = null;
|
||||
|
||||
// fix: clear black bg after camera capture
|
||||
this.videoElem!.srcObject = null;
|
||||
}
|
||||
|
||||
if (this.timerCapture) {
|
||||
clearTimeout(this.timerCapture);
|
||||
this.timerCapture = null;
|
||||
}
|
||||
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the sourceId for the camera to use.
|
||||
*/
|
||||
setGroupId(groupId: string) {
|
||||
if (groupId) {
|
||||
this.videoConstraints.video = {
|
||||
advanced: [{ groupId }],
|
||||
};
|
||||
} else {
|
||||
this.videoConstraints.video = true;
|
||||
}
|
||||
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets a list of all available video sources on
|
||||
* the current device.
|
||||
*/
|
||||
async getVideoDevices() {
|
||||
if (navigator.mediaDevices.enumerateDevices) {
|
||||
const devices = await navigator.mediaDevices.enumerateDevices();
|
||||
return devices.filter((item: MediaDeviceInfo) => {
|
||||
if (item.kind === 'videoinput') {
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
});
|
||||
} else {
|
||||
throw new Error(
|
||||
'Current browser doest not support MediaStreamTrack.getSources',
|
||||
);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
export default QrcodeDecoder;
|
||||
@ -0,0 +1,24 @@
|
||||
{
|
||||
"compilerOptions": {
|
||||
"rootDir": "src",
|
||||
"outDir": "dist",
|
||||
"baseUrl": ".",
|
||||
"downlevelIteration": true,
|
||||
"emitDecoratorMetadata": true,
|
||||
"esModuleInterop": true,
|
||||
"experimentalDecorators": true,
|
||||
"preserveConstEnums": true,
|
||||
"importHelpers": false,
|
||||
"target": "es5",
|
||||
"module": "commonjs",
|
||||
"lib": ["es5", "es6", "dom"],
|
||||
"moduleResolution": "node",
|
||||
"sourceMap": false,
|
||||
"paths": {
|
||||
"*": ["typings/*", "includes/*"]
|
||||
},
|
||||
"resolveJsonModule": true,
|
||||
"noUnusedLocals": true,
|
||||
"strict": true
|
||||
}
|
||||
}
|
||||
@ -1 +0,0 @@
|
||||
make test for your own private key
|
||||
@ -1,37 +0,0 @@
|
||||
<!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>
|
||||
@ -1,57 +0,0 @@
|
||||
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 = 'demo/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('demo/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', 'demo/assets/qrcode-video.mp4');
|
||||
|
||||
const result = await qr.decodeFromVideo(video);
|
||||
expect(result.data).to.equal('192.168.1.13:3000');
|
||||
});
|
||||
});
|
||||
});
|
||||
|
||||
@ -0,0 +1,25 @@
|
||||
{
|
||||
"compilerOptions": {
|
||||
"baseUrl": ".",
|
||||
"composite": true,
|
||||
"declaration": true,
|
||||
"declarationMap": true,
|
||||
"downlevelIteration": true,
|
||||
"emitDecoratorMetadata": true,
|
||||
"esModuleInterop": true,
|
||||
"experimentalDecorators": true,
|
||||
"preserveConstEnums": true,
|
||||
"importHelpers": false,
|
||||
"lib": ["esnext", "dom"],
|
||||
"module": "ESNext",
|
||||
"moduleResolution": "node",
|
||||
"sourceMap": false,
|
||||
"paths": {
|
||||
"*": ["typings/*", "includes/*"]
|
||||
},
|
||||
"resolveJsonModule": true,
|
||||
"noUnusedLocals": true,
|
||||
"strict": true,
|
||||
"target": "es5"
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,23 @@
|
||||
{
|
||||
"extends": ["tslint:latest", "tslint-config-prettier"],
|
||||
"rules": {
|
||||
"interface-name": [true, "never-prefix"],
|
||||
"member-access": false,
|
||||
"no-angle-bracket-type-assertion": false,
|
||||
"no-bitwise": false,
|
||||
"no-console": false,
|
||||
"no-default-export": true,
|
||||
"no-empty-interface": false,
|
||||
"no-implicit-dependencies": false,
|
||||
"no-submodule-imports": false,
|
||||
"ordered-imports": [false],
|
||||
"object-literal-sort-keys": false,
|
||||
"object-literal-key-quotes": [true, "as-needed"],
|
||||
"quotemark": [true, "single"],
|
||||
"semicolon": [true, "always", "ignore-bound-class-methods"],
|
||||
"jsx-boolean-value": false
|
||||
},
|
||||
"linterOptions": {
|
||||
"exclude": ["config/**/*.js", "node_modules/**/*.ts"]
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue