Top 10 Examples of "jsqr in functional component" in JavaScript
Dive into secure and efficient coding practices with our curated list of the top 10 examples showcasing 'jsqr' in functional components in JavaScript. Our advanced machine learning engine meticulously scans each line of code, cross-referencing millions of open source libraries to ensure your implementation is not just functional, but also robust and secure. Elevate your React applications to new heights by mastering the art of handling side effects, API calls, and asynchronous operations with confidence and precision.
const tick = () => {
this._onReadyStateChange(true);
if (this._video && this._video.readyState === this._video.HAVE_ENOUGH_DATA) {
this._onReadyStateChange(false);
canvasElement.hidden = false;
canvasElement.height = this._video.videoHeight;
canvasElement.width = this._video.videoWidth;
canvas.drawImage(this._video, 0, 0, canvasElement.width, canvasElement.height);
let imageData = canvas.getImageData(0, 0, canvasElement.width, canvasElement.height);
let code = jsQR(imageData.data, imageData.width, imageData.height, {
inversionAttempts: 'dontInvert',
});
if (code) {
let pincode = '';
let data = code.data.match(/^https?:\/\/(.*?)\/(\d+)_([\da-f]+)$/i);
if (data) {
if (data[1].split(':')[0] === 'localhost') { // local debug
pincode = data[2];
} else {
if (
data[1].split(':')[0] === location.host &&
crc32(data[2]).toString(16).toLowerCase() === data[3].toLowerCase()
) {
pincode = data[2];
}getPixels(input.src,function(err,pixels){
if(err) throw err;
var w = pixels.shape[0];
var h = pixels.shape[1];
var decoded = jsQR.decodeQRFromImage(pixels.data,w,h);
// This output is accessible to Image Sequencer
step.output = input;
step.output.data = decoded;
// Tell Image Sequencer that this step is complete
callback();
options.step.qrval = decoded;
});jimp.read(buffer, (err, image) => {
if (err){ return callback(err); }
// 2. Decode QRCode
let data = jsQr.decodeQRFromImage(image.bitmap.data, image.bitmap.width, image.bitmap.height);
// 3. Check is JSON
try {
let json = JSON.parse(data);
return callback(undefined, json);
} catch (ex) { /* exception */ }
// 4. Is string
if (data.indexOf('http') !== 0) {
return callback(undefined, { 'text' : data });
}
// 5. Parse URL parameters
let qs = data.indexOf('?')
if (qs < 0) return callback(undefined, { url : data });tick() {
let self = this;
if (self.video.readyState === self.video.HAVE_ENOUGH_DATA) {
self.canvasElement.height = self.video.videoHeight;
self.canvasElement.width = self.video.videoWidth;
self.canvas.drawImage(self.video, 0, 0, self.canvasElement.width, self.canvasElement.height);
var imageData = self.canvas.getImageData(0, 0, self.canvasElement.width, self.canvasElement.height);
var code = jsQR(imageData.data, imageData.width, imageData.height);
if (code) {
try {
let wallet = JSON.parse(code.data)
console.log('success detect QR, close camera!');
if(wallet && wallet.data && wallet.data.name){
this.stopScan();
$("#importWalletName").text(wallet.data.name);
self.qrcodeWallet = wallet;
$('#importQrcodeModal').modal('show');
}else{
console.log('Detect qr, but not NEM qr. continue ...')
}reader.onload = (e: ProgressEvent): void => {
const canvas = document.createElement('canvas');
canvas.width = width;
canvas.height = height;
const ctx = canvas.getContext('2d');
ctx.drawImage(img, 0, 0, width * 4, height * 4, 0, 0, width, height);
const {data} = ctx.getImageData(0, 0, width, height);
const qr = jsQR(data, width, height);
if (qr) {
const url = new URLSearchParams(qr.data);
const recipient = url.get('receiver').trim();
this.applyRecipientType(recipient);
this.validateRecipient(recipient);
this.qrCodeUpload.emit({
recipient: this.recipient,
amountNQT: url.get('amountNQT'),
feeNQT: url.get('feeNQT'),
immutable: url.get('immutable') === 'true',
feeSuggestionType: url.get('feeSuggestionType'),
messageIsText: url.get('messageIsText') !== 'false'
});
this.notifierService.notify('success', 'QR parsed successfully');
} else {
this.notifierService.notify('error', 'Error parsing QR code');jimp.read(buffer, (err, image) => {
if(err){
return node.error(err);
}
//Decode
let jsonQrData = jsQr.decodeQRFromImage(image.bitmap.data, image.bitmap.width, image.bitmap.height);
//safe parsing of qrCode message to json object
try {
msg[node.output] = JSON.parse(jsonQrData);
} catch (ex) {
//if it is an URL
if(jsonQrData.match(/^http(s)?:\/\//)){
//Save the full URL
let urlTab, params, paramsTab, url = jsonQrData;
msg[node.output] = {};
msg[node.output].url = url;
urlTab = url.split('?');
if(urlTab.length > 1){
params = urlTab[1];
msg[node.output].params = {};
paramsTab = params.split('&');
//Save every params of the URL in an objectprivate tick() {
if (this.video.readyState === this.video.HAVE_ENOUGH_DATA) {
const ctx = this.canvasElement.getContext('2d');
if (ctx) {
this.canvasElement.height = this.video.videoHeight;
this.canvasElement.width = this.video.videoWidth;
ctx.drawImage(this.video, 0, 0, this.canvasElement.width, this.canvasElement.height);
const imageData = ctx.getImageData(0, 0, this.canvasElement.width, this.canvasElement.height);
const code = jsQR(imageData.data, imageData.width, imageData.height, {
inversionAttempts: 'dontInvert',
});
if (code) {
this.surveyCode = code.data
.replace(location.origin, '')
.replace('https://baloise.github.io', '')
.replace('/this-or-that', '')
.replace('/index.html', '')
.replace('#/', '')
.replace('/vote', '')
.replace(/\//g, '');
if (this.stream) {
this.stream.getTracks().forEach(value => value.stop());
}
this.isScanEnabled = false;
}Jimp.read(imageBuffer, (err, image) => {
if (err) {
return reject(err)
}
const qrCodeImageArray = new Uint8ClampedArray(image.bitmap.data.buffer)
const qrCodeResult = jsQR(
qrCodeImageArray,
image.bitmap.width,
image.bitmap.height,
)
if (qrCodeResult) {
return resolve(qrCodeResult.data)
} else {
return reject(new Error('WXGetQRCode() qrCode decode fail'))
}
})
})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);_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;
}