change tx size to label. small fix re connecting slider and feerate. slider changes look when its value is ignored.

gui/qt/fee_slider.py

@@ -54,3 +54,28 @@ class FeeSlider(QSlider):
                 self.setValue(pos)
             tooltip = self.get_tooltip(pos, fee_rate)
             self.setToolTip(tooltip)
+
+    def activate(self):
+        self.setStyleSheet('')
+
+    def deactivate(self):
+        # TODO it would be nice to find a platform-independent solution
+        # that makes the slider look as if it was disabled
+        self.setStyleSheet(
+            """
+            QSlider::groove:horizontal {
+                border: 1px solid #999999;
+                height: 8px;
+                background: qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 #B1B1B1, stop:1 #B1B1B1);
+                margin: 2px 0;
+            }
+
+            QSlider::handle:horizontal {
+                background: qlineargradient(x1:0, y1:0, x2:1, y2:1, stop:0 #b4b4b4, stop:1 #8f8f8f);
+                border: 1px solid #5c5c5c;
+                width: 12px;
+                margin: -2px 0;
+                border-radius: 3px;
+            }
+            """
+        )

gui/qt/main_window.py

@@ -1067,8 +1067,12 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
                 self.config.set_key('fee_level', pos, False)
             else:
                 self.config.set_key('fee_per_kb', fee_rate, False)
+
+            self.feerate_e.setAmount(fee_rate // 1000)
+            self.fee_e.setModified(False)
+
+            self.fee_slider.activate()
             self.spend_max() if self.is_max else self.update_fee()
-            self.feerate_e.setAmount(fee_rate//1000)
 
         self.fee_slider = FeeSlider(self, self.config, fee_cb)
         self.fee_slider.setFixedWidth(140)
@@ -1084,10 +1088,17 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
                 # edit_changed was edited just now, so make sure we will
                 # freeze the correct fee setting (this)
                 edit_other.setModified(False)
+            self.fee_slider.deactivate()
             self.update_fee()
 
-        self.size_e = AmountEdit(lambda: 'bytes')
-        self.size_e.setFrozen(True)
+        class TxSizeLabel(QLabel):
+            def setAmount(self, byte_size):
+                self.setText('x   %s bytes   =' % byte_size)
+
+        self.size_e = TxSizeLabel()
+        self.size_e.setAlignment(Qt.AlignCenter)
+        self.size_e.setAmount(0)
+        self.size_e.setStyleSheet(ColorScheme.DEFAULT.as_stylesheet())
 
         self.feerate_e = FeerateEdit(lambda: 2 if self.fee_unit else 0)
         self.feerate_e.textEdited.connect(partial(on_fee_or_feerate, self.feerate_e, False))
@@ -1118,8 +1129,6 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
         hbox.addWidget(self.size_e)
         hbox.addWidget(self.fee_e)
 
-        self.size_e.setStyleSheet(ColorScheme.BLUE.as_stylesheet())
-
         vbox_feecontrol = QVBoxLayout()
         vbox_feecontrol.addWidget(self.fee_adv_controls)
         vbox_feecontrol.addWidget(self.fee_slider)
@@ -1643,9 +1652,10 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, PrintError):
         self.payment_request = None
         self.payto_e.is_pr = False
         for e in [self.payto_e, self.message_e, self.amount_e, self.fiat_send_e,
-                  self.fee_e, self.feerate_e, self.size_e]:
+                  self.fee_e, self.feerate_e]:
             e.setText('')
             e.setFrozen(False)
+        self.size_e.setAmount(0)
         self.set_pay_from([])
         #self.rbf_checkbox.setChecked(False)
         self.tx_external_keypairs = {}