better QR codes, still needs improvement

README.md

@@ -50,14 +50,16 @@ python multiwallet_gui/app.py
 ```
 
 ## Roadmap:
+* Add support for choosing other checksum words
 * Add detailed TX view (not just summary) to UI
-* Add QR code generation on send/receive
+* Add QR encode on address verification
+* Add QR gifs
 * Add units (sats/BTC) toggle
 * Test/release on multiple OS
 * Better form handling/validation
 * Support arbitrary paths
 * Add libsec
-* Add webcam on receive/send
+* Add webcam on receive/send for qrdecode
 * Sign binaries
 * Dark mode
 * Reproducible build

multiwallet_gui/helper.py

@@ -52,10 +52,11 @@ def _msgbox_err(main_text=None, informative_text=None, detailed_text=None):
 
 
 class QRPopup(QDialog):
-    def __init__(self, window_title, qr_text):
+    def __init__(self, qr_text, window_title, window_height):
         super().__init__()
 
         self.setWindowTitle(window_title)
+        # self.height = window_height
 
         self.setMaximumHeight(16777215)
         self.setMaximumWidth(16777215)
@@ -68,25 +69,34 @@ def __init__(self, window_title, qr_text):
         self.labelImage.setMaximumHeight(16777215)
         self.labelImage.setMaximumWidth(16777215)
 
-        self._set_pixmap()
+        self._set_pixmap(height_to_use=window_height * 0.9)
 
         self.vbox.addWidget(self.labelImage)
         self.setLayout(self.vbox)
 
         self.show()
 
-    def _set_pixmap(self):
+    def _set_pixmap(self, height_to_use=None):
+        if height_to_use is None:
+            height_to_use = self.height() * 0.9
+
         self.pixmap = create_qt_pixmap_qr(text=self.qr_text).scaledToHeight(
-            self.height() * 0.9
+            height_to_use
         )
         self.labelImage.setPixmap(self.pixmap)
 
     def resizeEvent(self, event):
         self.pixmap = self._set_pixmap()
 
 
-def qr_dialog(qr_text, window_title):
-    dialog = QRPopup(qr_text=qr_text, window_title=strip_html(window_title))
+def qr_dialog(qwidget, qr_text, window_title):
+    # set to 90% of max size: https://stackoverflow.com/questions/35887237/current-screen-size-in-python3-with-pyqt5
+    window_height = qwidget.screen().size().height() * 0.9
+    dialog = QRPopup(
+        qr_text=qr_text,
+        window_title=strip_html(window_title),
+        window_height=window_height,
+    )
     return dialog.exec_()
 
 

multiwallet_gui/seedpicker.py

@@ -204,6 +204,7 @@ def process_submit(self):
 
     def make_qr_popup(self):
         qr_dialog(
+            qwidget=self,
             qr_text=self.pubResultsROEdit.toPlainText(),
             window_title=self.pubResultsLabel.text(),
         )

multiwallet_gui/send.py

@@ -5,7 +5,9 @@
     BITCOIN_TESTNET_TOOLTIP,
     BITCOIN_MAINNET_TOOLTIP,
     _clean_submisission,
+    create_qr_icon,
     _msgbox_err,
+    qr_dialog,
 )
 from PyQt5.QtWidgets import (
     QVBoxLayout,
@@ -44,10 +46,10 @@ class SendTab(QWidget):
 
     # FIXME (add support and UX for this)
     UNITS = "sats"
-    IS_TESTNET = True  # No way to reliably infer this from the PSBT unfortunately :(
 
     def __init__(self):
         super().__init__()
+
         vbox = QVBoxLayout()
 
         self.psbtLabel = QLabel(
@@ -109,9 +111,14 @@ def __init__(self):
         self.psbtSignedLabel.setToolTip(
             "Signed version for your online computer to broadcast to the bitcoin network (once you have collected enough signatures)."
         )
-        self.psbtSignedEdit = QPlainTextEdit("")
-        self.psbtSignedEdit.setReadOnly(True)
-        self.psbtSignedEdit.setHidden(True)
+        self.psbtSignedROEdit = QPlainTextEdit("")
+        self.psbtSignedROEdit.setReadOnly(True)
+        self.psbtSignedROEdit.setHidden(True)
+
+        self.qrButton = QPushButton()
+        self.qrButton.setText("QR")
+        self.qrButton.setHidden(True)
+        self.qrButton.clicked.connect(self.make_qr_popup)
 
         for widget in (
             self.psbtLabel,
@@ -127,7 +134,8 @@ def __init__(self):
             self.psbtDecodedLabel,
             self.psbtDecodedROEdit,
             self.psbtSignedLabel,
-            self.psbtSignedEdit,
+            self.psbtSignedROEdit,
+            self.qrButton,
         ):
             vbox.addWidget(widget)
 
@@ -139,15 +147,25 @@ def decode_psbt(self):
     def sign_psbt(self):
         return self.process_psbt(sign_tx=True)
 
+    def make_qr_popup(self):
+        return qr_dialog(
+            qwidget=self,
+            qr_text=self.psbtSignedROEdit.toPlainText(),
+            window_title=self.psbtSignedLabel.text(),
+        )
+
     def process_psbt(self, sign_tx=True):
         # Clear any previous submission in case of errors
         self.psbtDecodedLabel.setText("")
         self.psbtDecodedROEdit.clear()
         self.psbtDecodedROEdit.setHidden(True)
 
         self.psbtSignedLabel.setText("")
-        self.psbtSignedEdit.clear()
-        self.psbtSignedEdit.setHidden(True)
+        self.psbtSignedROEdit.clear()
+        self.psbtSignedROEdit.setHidden(True)
+
+        self.qrButton.setHidden(True)
+        self.qrButton.setText("")
         # TODO: why setText and not hide?
 
         if self.infernetwork_button.isChecked():
@@ -433,8 +451,12 @@ def process_psbt(self, sign_tx=True):
         try:
             if psbt_obj.sign_with_private_keys(private_keys) is True:
                 self.psbtSignedLabel.setText("<b>Signed PSBT to Broadcast</b>")
-                self.psbtSignedEdit.setHidden(False)
-                self.psbtSignedEdit.appendPlainText(psbt_obj.serialize_base64())
+                self.psbtSignedROEdit.setHidden(False)
+                self.psbtSignedROEdit.appendPlainText(psbt_obj.serialize_base64())
+
+                self.qrButton.setHidden(False)
+                self.qrButton.setText("QR")
+                self.qrButton.setIcon(create_qr_icon())
             else:
                 return _msgbox_err(
                     main_text="Transaction Not Signed",

setup.py

@@ -11,7 +11,7 @@
 
 setup(
     name="multiwallet",
-    version="0.3.7",
+    version="0.3.8",
     author="Michael Flaxman",
     author_email="multiwallet@michaelflaxman.com",
     description="Stateless multisig bitcoin wallet",