fix(core): fix missing refresh in progress layout

[no changelog]

core/embed/rust/src/ui/model_tt/bootloader/mod.rs

@@ -261,11 +261,10 @@ fn screen_progress(
         bg_color,
     );
     display::loader(progress, -20, fg_color, bg_color, icon);
+    display::refresh();
     if initialize {
         fadein();
     }
-
-    display::refresh();
 }
 
 #[no_mangle]

core/src/apps/bitcoin/sign_tx/approvers.py

@@ -16,6 +16,8 @@ from .sig_hasher import BitcoinSigHasher
 from .tx_info import OriginalTxInfo
 
 if TYPE_CHECKING:
+    from typing import Optional
+
     from trezor.crypto import bip32
     from trezor.messages import SignTx, TxAckPaymentRequest, TxInput, TxOutput
 
@@ -23,6 +25,7 @@ if TYPE_CHECKING:
     from apps.common.keychain import Keychain
 
     from ..authorization import CoinJoinAuthorization
+    from .bitcoin import Bitcoin
     from .payment_request import PaymentRequestVerifier
     from .tx_info import TxInfo
 
@@ -132,7 +135,12 @@ class Approver:
     ) -> None:
         raise NotImplementedError
 
-    async def approve_tx(self, tx_info: TxInfo, orig_txs: list[OriginalTxInfo]) -> None:
+    async def approve_tx(
+        self,
+        tx_info: TxInfo,
+        orig_txs: list[OriginalTxInfo],
+        signer: Optional[Bitcoin],
+    ) -> None:
         self.finish_payment_request()
 
 
@@ -270,13 +278,18 @@ class BasicApprover(Approver):
         else:
             return TR.bitcoin__title_update_transaction
 
-    async def approve_tx(self, tx_info: TxInfo, orig_txs: list[OriginalTxInfo]) -> None:
+    async def approve_tx(
+        self,
+        tx_info: TxInfo,
+        orig_txs: list[OriginalTxInfo],
+        signer: Optional[Bitcoin],
+    ) -> None:
         from trezor.wire import NotEnoughFunds
 
         coin = self.coin  # local_cache_attribute
         amount_unit = self.amount_unit  # local_cache_attribute
 
-        await super().approve_tx(tx_info, orig_txs)
+        await super().approve_tx(tx_info, orig_txs, signer)
 
         if self.has_unverified_external_input:
             await helpers.confirm_unverified_external_input()
@@ -336,6 +349,8 @@ class BasicApprover(Approver):
                     )
 
             if not self.is_payjoin():
+                if signer is not None:
+                    signer.init_signing()
                 title = self._replacement_title(tx_info, orig_txs)
                 # Not a PayJoin: Show the actual fee difference, since any difference in the fee is
                 # coming entirely from the user's own funds and from decreases of external outputs.
@@ -344,6 +359,8 @@ class BasicApprover(Approver):
                     title, fee - orig_fee, fee, fee_rate, coin, amount_unit
                 )
             elif spending > orig_spending:
+                if signer is not None:
+                    signer.init_signing()
                 title = self._replacement_title(tx_info, orig_txs)
                 # PayJoin and user is spending more: Show the increase in the user's contribution
                 # to the fee, ignoring any contribution from external inputs. Decreasing of
@@ -363,6 +380,9 @@ class BasicApprover(Approver):
                     tx_info.tx.lock_time, tx_info.lock_time_disabled()
                 )
 
+            if signer is not None:
+                signer.init_signing()
+
             if not self.external_in:
                 await helpers.confirm_total(
                     total,
@@ -511,10 +531,15 @@ class CoinJoinApprover(Approver):
             self.h_request.get_digest(),
         )
 
-    async def approve_tx(self, tx_info: TxInfo, orig_txs: list[OriginalTxInfo]) -> None:
+    async def approve_tx(
+        self,
+        tx_info: TxInfo,
+        orig_txs: list[OriginalTxInfo],
+        signer: Optional[Bitcoin],
+    ) -> None:
         from ..authorization import FEE_RATE_DECIMALS
 
-        await super().approve_tx(tx_info, orig_txs)
+        await super().approve_tx(tx_info, orig_txs, signer)
 
         if not self._verify_coinjoin_request(tx_info):
             raise DataError("Invalid signature in coinjoin request.")

core/src/apps/bitcoin/sign_tx/bitcoin.py

@@ -40,6 +40,20 @@ _SERIALIZED_TX_BUFFER = empty_bytearray(_MAX_SERIALIZED_CHUNK_SIZE)
 
 
 class Bitcoin:
+    def init_signing(self) -> None:
+        # Next shown progress bar is already signing progress, but it isn't shown until approval from next dialog
+        progress.init_signing(
+            len(self.external),
+            len(self.segwit),
+            len(self.presigned),
+            self.taproot_only,
+            self.serialize,
+            self.coin,
+            self.tx_info.tx,
+            self.orig_txs,
+        )
+        self.signing = True
+
     async def signer(self) -> None:
         progress.init(
             self.tx_info.tx, is_coinjoin=isinstance(self.approver, CoinJoinApprover)
@@ -56,18 +70,13 @@ class Bitcoin:
         await self.step2_approve_outputs()
 
         # Check fee, approve lock_time and total.
-        await self.approver.approve_tx(self.tx_info, self.orig_txs)
+        await self.approver.approve_tx(self.tx_info, self.orig_txs, self)
 
-        progress.init_signing(
-            len(self.external),
-            len(self.segwit),
-            len(self.presigned),
-            self.taproot_only,
-            self.serialize,
-            self.coin,
-            self.tx_info.tx,
-            self.orig_txs,
-        )
+        # Make sure proper progress is shown, in case dialog was not required
+        if not self.signing:
+            self.init_signing()
+            progress.report_init()
+        progress.report()
 
         # Following steps can take a long time, make sure autolock doesn't kick in.
         # This is set to True again after workflow is finished in start_default().
@@ -129,6 +138,9 @@ class Bitcoin:
         # indicates whether all internal inputs are Taproot
         self.taproot_only = True
 
+        # indicates whether the transaction is being signed
+        self.signing = False
+
         # transaction and signature serialization
         _SERIALIZED_TX_BUFFER[:] = bytes()
         self.serialized_tx = _SERIALIZED_TX_BUFFER

core/src/apps/bitcoin/sign_tx/progress.py

@@ -97,9 +97,6 @@ class Progress:
         if serialize and not coin.decred:
             self.steps += tx.outputs_count
 
-        self.report_init()
-        self.report()
-
     def init_prev_tx(self, inputs: int, outputs: int) -> None:
         self.prev_tx_step = _PREV_TX_MULTIPLIER / (inputs + outputs)
 

core/src/trezor/ui/layouts/tr/progress.py

@@ -17,6 +17,7 @@ class RustProgress:
         self.layout = layout
         self.layout.attach_timer_fn(self.set_timer)
         self.layout.paint()
+        ui.refresh()
 
     def set_timer(self, token: int, deadline: int) -> None:
         raise RuntimeError  # progress layouts should not set timers

core/src/trezor/ui/layouts/tt/progress.py

@@ -18,6 +18,7 @@ class RustProgress:
         ui.backlight_fade(ui.style.BACKLIGHT_DIM)
         self.layout.attach_timer_fn(self.set_timer)
         self.layout.paint()
+        ui.refresh()
         ui.backlight_fade(ui.style.BACKLIGHT_NORMAL)
 
     def set_timer(self, token: int, deadline: int) -> None:

core/tests/test_apps.bitcoin.approver.py

@@ -188,7 +188,7 @@ class TestApprover(unittest.TestCase):
             else:
                 await_result(approver.add_external_output(txo, script_pubkey=bytes(22)))
 
-        await_result(approver.approve_tx(TxInfo(signer, tx), []))
+        await_result(approver.approve_tx(TxInfo(signer, tx), [], None))
 
     def test_coinjoin_input_account_depth_mismatch(self):
         txi = TxInput(