qt coin control: introduce second status bar

electrum/gui/qt/main_window.py

@@ -174,6 +174,8 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
 
         self.completions = QStringListModel()
 
+        coincontrol_sb = self.create_coincontrol_statusbar()
+
         self.tabs = tabs = QTabWidget(self)
         self.send_tab = self.create_send_tab()
         self.receive_tab = self.create_receive_tab()
@@ -202,7 +204,14 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
         add_optional_tab(tabs, self.console_tab, read_QIcon("tab_console.png"), _("Con&sole"), "console")
 
         tabs.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
-        self.setCentralWidget(tabs)
+
+        central_widget = QWidget()
+        vbox = QVBoxLayout(central_widget)
+        vbox.setContentsMargins(0, 0, 0, 0)
+        vbox.addWidget(tabs)
+        vbox.addWidget(coincontrol_sb)
+
+        self.setCentralWidget(central_widget)
 
         if self.config.get("is_maximized"):
             self.showMaximized()
@@ -1759,8 +1768,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
     def create_utxo_tab(self):
         from .utxo_list import UTXOList
         self.utxo_list = UTXOList(self)
-        t = self.utxo_list.get_toolbar()
-        return self.create_list_tab(self.utxo_list, t)
+        return self.create_list_tab(self.utxo_list)
 
     def create_contacts_tab(self):
         from .contact_list import ContactList
@@ -1948,6 +1956,33 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
         run_hook('create_status_bar', sb)
         self.setStatusBar(sb)
 
+    def create_coincontrol_statusbar(self):
+        self.coincontrol_sb = sb = QStatusBar()
+        sb.setSizeGripEnabled(False)
+        sb.setFixedHeight(3 * char_width_in_lineedit())
+        sb.setStyleSheet('QStatusBar::item {border: None;} '
+                         + ColorScheme.GREEN.as_stylesheet(True))
+
+        self.coincontrol_label = QLabel()
+        self.coincontrol_label.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Preferred)
+        self.coincontrol_label.setTextInteractionFlags(Qt.TextSelectableByMouse)
+        sb.addWidget(self.coincontrol_label)
+
+        clear_cc_button = EnterButton(_('Reset'), lambda: self.utxo_list.set_spend_list([]))
+        clear_cc_button.setStyleSheet("margin-right: 5px;")
+        sb.addPermanentWidget(clear_cc_button)
+
+        sb.setVisible(False)
+        return sb
+
+    def set_coincontrol_msg(self, msg: Optional[str]) -> None:
+        if not msg:
+            self.coincontrol_label.setText("")
+            self.coincontrol_sb.setVisible(False)
+            return
+        self.coincontrol_label.setText(msg)
+        self.coincontrol_sb.setVisible(True)
+
     def update_lock_icon(self):
         icon = read_QIcon("lock.png") if self.wallet.has_password() else read_QIcon("unlock.png")
         self.password_button.setIcon(icon)

electrum/gui/qt/utxo_list.py

@@ -58,8 +58,6 @@ class UTXOList(MyTreeView):
         super().__init__(parent, self.create_menu,
                          stretch_column=self.Columns.LABEL,
                          editable_columns=[])
-        self.cc_label = QLabel('')
-        self.clear_cc_button = EnterButton(_('Reset'), lambda: self.set_spend_list([]))
         self.spend_list = []  # type: Sequence[str]
         self.setModel(QStandardItemModel(self))
         self.setSelectionMode(QAbstractItemView.ExtendedSelection)
@@ -76,14 +74,16 @@ class UTXOList(MyTreeView):
         for idx, utxo in enumerate(utxos):
             self.insert_utxo(idx, utxo)
         self.filter()
-        self.clear_cc_button.setEnabled(bool(self.spend_list))
-        # update cc_label
+        # update coincontrol status bar
         coins = [self.utxo_dict[x] for x in self.spend_list] or utxos
         coins = self._filter_frozen_coins(coins)
         amount = sum(x.value_sats() for x in coins)
         amount_str = self.parent.format_amount_and_units(amount)
         num_outputs_str = _("{} outputs available ({} total)").format(len(coins), len(utxos))
-        self.cc_label.setText(f'{num_outputs_str}, {amount_str}')
+        if self.spend_list:
+            self.parent.set_coincontrol_msg(_("Coin control active") + f': {num_outputs_str}, {amount_str}')
+        else:
+            self.parent.set_coincontrol_msg(None)
 
     def insert_utxo(self, idx, utxo: PartialTxInput):
         address = utxo.address
@@ -145,13 +145,6 @@ class UTXOList(MyTreeView):
         if not all([prevout_str in utxo_set for prevout_str in self.spend_list]):
             self.spend_list = []
 
-    def get_toolbar(self):
-        h = QHBoxLayout()
-        h.addWidget(self.cc_label)
-        h.addStretch()
-        h.addWidget(self.clear_cc_button)
-        return h
-
     def create_menu(self, position):
         selected = self.get_selected_outpoints()
         if not selected: