Add touch-friendly SeedQR transcription viewer

src/gui/common.py

@@ -176,7 +176,7 @@ def align_button_pair(btn1, btn2):
     btn2.set_x(HOR_RES // 2 + PADDING // 2)
 
 
-def add_qrcode(text, y=QR_PADDING, scr=None, style=None, width=None):
+def add_qrcode(text, y=QR_PADDING, scr=None, style=None, width=None, sensitive=False):
     """Helper functions that creates a title-styled label"""
     if scr is None:
         scr = lv.scr_act()
@@ -185,6 +185,7 @@ def add_qrcode(text, y=QR_PADDING, scr=None, style=None, width=None):
         width = 350
 
     qr = QRCode(scr)
+    qr.sensitive = sensitive
     qr.set_text(text)
     qr.set_size(width)
     qr.set_text(text)

src/gui/components/qrcode.py

@@ -38,6 +38,9 @@ def __init__(self, *args, **kwargs):
 
         self.encoder = None
         self._autoplay = True
+        # When True, this QR encodes secret material (mnemonic, SeedQR
+        # digits/bytes): never print its contents, even in the simulator.
+        self.sensitive = False
 
         self.qr = lvqr.QRCode(self)
         self._text = "Text"
@@ -244,7 +247,7 @@ def update_note(self):
         self.check_controls()
 
     def set_text(self, text="Text", set_first_frame=False):
-        if platform.simulator and self._text != text:
+        if platform.simulator and not self.sensitive and self._text != text:
             print("QR on screen:", text)
         self.encoder = None
         self._text = text
@@ -288,8 +291,8 @@ def check_controls(self):
         self.play.set_hidden((not self.is_fullscreen) or (self.idx is not None) or (self.encoder is None))
 
     def _set_text(self, text):
-        # one bcur frame doesn't require checksum
-        print(text)
+        if platform.simulator and not self.sensitive:
+            print(text)
         self.set_style(qr_style)
         self.qr.set_text(text)
         self.qr.align(self, lv.ALIGN.CENTER, 0, -100 if self.is_fullscreen else 0)

src/gui/screens/__init__.py

@@ -8,3 +8,4 @@
 from .mnemonic import MnemonicScreen, NewMnemonicScreen, RecoverMnemonicScreen
 from .transaction import TransactionScreen
 from .settings import DevSettings
+from .seedqr import SeedQROverviewScreen, SeedQRZoomScreen, show_seedqr

src/gui/screens/qralert.py

@@ -14,11 +14,12 @@ def __init__(
         button_text="Close",
         note=None,
         transcribe=False,
+        sensitive=False,
     ):
         if qr_message is None:
             qr_message = message
         super().__init__(title, message, button_text, note=note)
-        self.qr = add_qrcode(qr_message, scr=self, width=qr_width)
+        self.qr = add_qrcode(qr_message, scr=self, width=qr_width, sensitive=sensitive)
         self.qr.align(self.page, lv.ALIGN.IN_TOP_MID, 0, 20)
         self.message.align(self.qr, lv.ALIGN.OUT_BOTTOM_MID, 0, 20)
         if transcribe: