From 6a83a0b649fcee760607238fb975c4ebf5f623b2 Mon Sep 17 00:00:00 2001
From: Christoph Reiter <reiter.christoph@gmail.com>
Date: Wed, 21 Oct 2020 11:52:58 +0200
Subject: [PATCH] Only emit an event if we get a new code
There is no need to emit the same thing 5 times a second.
---
packages/qr-code-scanner/src/qr-code-scanner.js | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/packages/qr-code-scanner/src/qr-code-scanner.js b/packages/qr-code-scanner/src/qr-code-scanner.js
index d318bc97..698f772d 100644
--- a/packages/qr-code-scanner/src/qr-code-scanner.js
+++ b/packages/qr-code-scanner/src/qr-code-scanner.js
@@ -212,6 +212,7 @@ export class QrCodeScanner extends ScopedElementsMixin(DBPLitElement) {
const that = this;
let lastVideoTime = -1;
let lastCode = null;
+ let lastSentData = null;
function tick() {
that._requestID = null;
@@ -347,7 +348,9 @@ export class QrCodeScanner extends ScopedElementsMixin(DBPLitElement) {
outputMessage.hidden = true;
outputData.parentElement.hidden = false;
outputData.innerText = code.data;
- that.sendUrl(code.data);
+ if (lastSentData !== code.data)
+ that.sendUrl(code.data);
+ lastSentData = code.data;
} else {
outputMessage.hidden = false;
outputData.parentElement.hidden = true;
--
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