From 17ae96be9871f51eef33f3be62de86ae8fe54772 Mon Sep 17 00:00:00 2001
From: Tamara Steinwender <tamara.steinwender@tugraz.at>
Date: Tue, 3 Nov 2020 15:13:03 +0100
Subject: [PATCH] Try a fix for IOS QR code reader problem
---
packages/qr-code-scanner/src/qr-code-scanner.js | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/packages/qr-code-scanner/src/qr-code-scanner.js b/packages/qr-code-scanner/src/qr-code-scanner.js
index 42b3674c..36282770 100644
--- a/packages/qr-code-scanner/src/qr-code-scanner.js
+++ b/packages/qr-code-scanner/src/qr-code-scanner.js
@@ -161,6 +161,8 @@ export class QrCodeScanner extends ScopedElementsMixin(DBPLitElement) {
this._outputData = null;
this._videoRunning = false;
this._lock = new Mutex();
+
+ this.videoReady = false;
}
static get scopedElements() {
@@ -261,10 +263,11 @@ export class QrCodeScanner extends ScopedElementsMixin(DBPLitElement) {
let detectorRunning = false;
const tick = () => {
+ console.log("---", this.videoReady);
this._requestID = null;
- if (video.readyState === video.HAVE_ENOUGH_DATA) {
+ if (video.readyState === video.HAVE_ENOUGH_DATA || this.videoReady) {
this._loading = false;
-
+ this.videoReady = true;
// draw into a temporary canvas first
canvasElement.height = video.videoHeight;
canvasElement.width = video.videoWidth;
@@ -404,6 +407,7 @@ export class QrCodeScanner extends ScopedElementsMixin(DBPLitElement) {
this._askPermission = false;
this._videoRunning = false;
this._loading = false;
+ this.videoReady = false;
this._loadingMessage = '';
} finally {
--
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