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Fix: Explicitly request camera permission before starting Quagga

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- Added getUserMedia call before Quagga.init to trigger browser permission dialog
- Better error messages for permission denied/not found/in use

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
Eduard Wisch 2026-02-17 11:38:01 +01:00
parent fb6351aa29
commit 55dd2af732
2 changed files with 29 additions and 12 deletions
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2
core/modules/modHandyBarcodeScanner.class.php
View file

@ -76,7 +76,7 @@ class modHandyBarcodeScanner extends DolibarrModules
$this->editor_squarred_logo = ''; // Must be image filename into the module/img directory followed with @modulename. Example: 'myimage.png@handybarcodescanner'
// Possible values for version are: 'development', 'experimental', 'dolibarr', 'dolibarr_deprecated', 'experimental_deprecated' or a version string like 'x.y.z'
$this->version = '1.0';
$this->version = '1.1';
// Url to the file with your last numberversion of this module
//$this->url_last_version = 'http://www.example.com/versionmodule.txt';

39
js/scanner.js
View file

@ -165,6 +165,33 @@
elements.startBtn.disabled = true;
elements.startBtn.textContent = 'Initialisiere...';
// First request camera permission explicitly
navigator.mediaDevices.getUserMedia({ video: { facingMode: 'environment' } })
.then(function(stream) {
// Permission granted - stop the test stream
stream.getTracks().forEach(track => track.stop());
// Now start Quagga
initQuagga();
})
.catch(function(err) {
console.error('Camera permission error:', err);
elements.startBtn.disabled = false;
elements.startBtn.textContent = CONFIG.lang.startScan || 'Scan starten';
let errorMsg = CONFIG.lang.cameraError || 'Kamerafehler';
if (err.name === 'NotAllowedError') {
errorMsg = 'Kamerazugriff verweigert. Bitte Berechtigung in den Browser-Einstellungen erteilen.';
} else if (err.name === 'NotFoundError') {
errorMsg = 'Keine Kamera gefunden.';
} else if (err.name === 'NotReadableError') {
errorMsg = 'Kamera wird bereits verwendet.';
}
showToast(errorMsg, 'error');
});
}
function initQuagga() {
Quagga.init({
inputStream: {
name: "Live",
@ -191,17 +218,7 @@
console.error('Quagga init error:', err);
elements.startBtn.disabled = false;
elements.startBtn.textContent = CONFIG.lang.startScan || 'Scan starten';
// Show specific error message
let errorMsg = CONFIG.lang.cameraError || 'Kamerafehler';
if (err.name === 'NotAllowedError') {
errorMsg = 'Kamerazugriff verweigert. Bitte Berechtigung erteilen.';
} else if (err.name === 'NotFoundError') {
errorMsg = 'Keine Kamera gefunden.';
} else if (err.name === 'NotReadableError') {
errorMsg = 'Kamera wird bereits verwendet.';
}
showToast(errorMsg, 'error');
showToast(CONFIG.lang.cameraError || 'Kamerafehler', 'error');
return;
}