From 0c4b2814757206b69acd8561e10ccba01cfc7447 Mon Sep 17 00:00:00 2001
From: Thauan Amorim <thauanssussu@gmail.com>
Date: Sun, 9 Feb 2025 18:44:26 -0300
Subject: [PATCH] [feature/1630] Add QR code button on signed transaction
 screen

---
 .../transaction/HeadersController.java        | 20 +++++++++++++++++++
 .../sparrow/transaction/headers.fxml          |  5 +++++
 2 files changed, 25 insertions(+)

diff --git a/src/main/java/com/sparrowwallet/sparrow/transaction/HeadersController.java b/src/main/java/com/sparrowwallet/sparrow/transaction/HeadersController.java
index 2a7f2912..1e36c6b2 100644
--- a/src/main/java/com/sparrowwallet/sparrow/transaction/HeadersController.java
+++ b/src/main/java/com/sparrowwallet/sparrow/transaction/HeadersController.java
@@ -9,6 +9,7 @@ import com.sparrowwallet.drongo.psbt.PSBT;
 import com.sparrowwallet.drongo.psbt.PSBTInput;
 import com.sparrowwallet.drongo.uri.BitcoinURI;
 import com.sparrowwallet.drongo.wallet.*;
+import com.sparrowwallet.hummingbird.UR;
 import com.sparrowwallet.hummingbird.registry.CryptoPSBT;
 import com.sparrowwallet.sparrow.AppServices;
 import com.sparrowwallet.sparrow.EventManager;
@@ -230,6 +231,9 @@ public class HeadersController extends TransactionFormController implements Init
     @FXML
     private Button saveFinalButton;
 
+    @FXML
+    private Button showTransactionButton;
+
     @FXML
     private Button payjoinButton;
 
@@ -463,6 +467,8 @@ public class HeadersController extends TransactionFormController implements Init
         broadcastButton.managedProperty().bind(broadcastButton.visibleProperty());
         saveFinalButton.managedProperty().bind(saveFinalButton.visibleProperty());
         saveFinalButton.visibleProperty().bind(broadcastButton.visibleProperty().not());
+        showTransactionButton.managedProperty().bind(showTransactionButton.visibleProperty());
+        showTransactionButton.visibleProperty().bind(broadcastButton.visibleProperty().not());
         broadcastButton.visibleProperty().bind(AppServices.onlineProperty());
 
         BitcoinURI payjoinURI = getPayjoinURI();
@@ -1280,6 +1286,20 @@ public class HeadersController extends TransactionFormController implements Init
         }
     }
 
+    public void showTransaction(ActionEvent event) {
+        try {
+            Transaction transaction = headersForm.getPsbt().extractTransaction();
+            byte[] txBytes = transaction.bitcoinSerialize();
+            UR ur = UR.fromBytes(txBytes);
+            BBQR bbqr = new BBQR(BBQRType.TXN, txBytes);
+            QRDisplayDialog qrDisplayDialog = new QRDisplayDialog(ur, bbqr, false, false, false);
+            qrDisplayDialog.showAndWait();
+        } catch (Exception exception) {
+            log.error("Error creating UR", exception);
+            AppServices.showErrorDialog("Error displaying transaction QR code", exception.getMessage());
+        }
+    }
+
     public void getPayjoinTransaction(ActionEvent event) {
         BitcoinURI payjoinURI = getPayjoinURI();
         if(payjoinURI == null) {
diff --git a/src/main/resources/com/sparrowwallet/sparrow/transaction/headers.fxml b/src/main/resources/com/sparrowwallet/sparrow/transaction/headers.fxml
index b6b92ac6..c7e26af0 100644
--- a/src/main/resources/com/sparrowwallet/sparrow/transaction/headers.fxml
+++ b/src/main/resources/com/sparrowwallet/sparrow/transaction/headers.fxml
@@ -293,6 +293,11 @@
                             <Tooltip text="Connect to a server (bottom right toggle) to broadcast a transaction" />
                         </tooltip>
                     </Button>
+                    <Button fx:id="showTransactionButton" defaultButton="true" HBox.hgrow="ALWAYS" text="Show Transaction as QR" contentDisplay="TOP" wrapText="true" textAlignment="CENTER" onAction="#showTransaction">
+                        <graphic>
+                            <Glyph fontFamily="Font Awesome 5 Free Solid" fontSize="20" icon="QRCODE" />
+                        </graphic>
+                    </Button>
                     <Button fx:id="payjoinButton" defaultButton="true" HBox.hgrow="ALWAYS" text="Get Payjoin Transaction" contentDisplay="TOP" wrapText="true" textAlignment="CENTER" onAction="#getPayjoinTransaction">
                         <graphic>
                             <Glyph fontFamily="Font Awesome 5 Free Solid" fontSize="20" icon="RANDOM" />