From f382f77c89ef925c09a9027dafffda313c04b3ca Mon Sep 17 00:00:00 2001
From: Andrew Kozlik <andrew.kozlik@gmail.com>
Date: Thu, 25 Jun 2020 11:39:40 +0200
Subject: [PATCH] core/ui: Fix repaint bug in QR code rendering #1067.

---
 core/ChangeLog           | 1 +
 core/src/trezor/ui/qr.py | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/core/ChangeLog b/core/ChangeLog
index b21963847f..777f0e0b5e 100644
--- a/core/ChangeLog
+++ b/core/ChangeLog
@@ -19,6 +19,7 @@ _Most likely to be released on July 1st._
 
 ### Fixed
 - Fix cancel icon in PIN dialog.  #1042
+- Fix repaint bug in QR code rendering.  #1067
 
 ### Security
 
diff --git a/core/src/trezor/ui/qr.py b/core/src/trezor/ui/qr.py
index 73ca541a11..5f5e31c5e9 100644
--- a/core/src/trezor/ui/qr.py
+++ b/core/src/trezor/ui/qr.py
@@ -9,4 +9,6 @@ class Qr(ui.Component):
         self.scale = scale
 
     def on_render(self) -> None:
-        ui.display.qrcode(self.x, self.y, self.data.encode(), self.scale)
+        if self.repaint:
+            ui.display.qrcode(self.x, self.y, self.data.encode(), self.scale)
+            self.repaint = False