core/ui: Fix repaint bug in QR code rendering #1067.

trezor · Jun 25, 2020 · f382f77 · f382f77
1 parent 312d6ea
commit f382f77
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diff --git 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
@@ -9,4 +9,6 @@ def __init__(self, data: str, x: int, y: int, scale: int):
         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