move units and amount formatting to simple_config

electrum/gui/kivy/main_window.py

@@ -258,16 +258,10 @@ class ElectrumWindow(App):
         self.show_info(_('Payment failed') + '\n\n' + reason)
 
     def _get_bu(self):
-        decimal_point = self.electrum_config.get('decimal_point', DECIMAL_POINT_DEFAULT)
-        try:
-            return decimal_point_to_base_unit_name(decimal_point)
-        except UnknownBaseUnit:
-            return decimal_point_to_base_unit_name(DECIMAL_POINT_DEFAULT)
+        return self.electrum_config.get_base_unit()
 
     def _set_bu(self, value):
-        assert value in base_units.keys()
-        decimal_point = base_unit_name_to_decimal_point(value)
-        self.electrum_config.set_key('decimal_point', decimal_point, True)
+        self.electrum_config.set_base_unit(value)
         self._trigger_update_status()
         self._trigger_update_history()
 
@@ -279,7 +273,7 @@ class ElectrumWindow(App):
         self._trigger_update_history()
 
     def decimal_point(self):
-        return base_units[self.base_unit]
+        return self.electrum_config.get_decimal_point()
 
     def btc_to_fiat(self, amount_str):
         if not amount_str:

electrum/gui/qt/main_window.py

@@ -192,12 +192,6 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
 
         self.create_status_bar()
         self.need_update = threading.Event()
-        self.decimal_point = config.get('decimal_point', DECIMAL_POINT_DEFAULT)
-        try:
-            decimal_point_to_base_unit_name(self.decimal_point)
-        except UnknownBaseUnit:
-            self.decimal_point = DECIMAL_POINT_DEFAULT
-        self.num_zeros = int(config.get('num_zeros', 0))
 
         self.completions = QStringListModel()
 
@@ -859,24 +853,23 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger):
         self.notify_transactions()
 
     def format_amount(self, x, is_diff=False, whitespaces=False):
-        return format_satoshis(x, self.num_zeros, self.decimal_point, is_diff=is_diff, whitespaces=whitespaces)
+        return self.config.format_amount(x, is_diff=is_diff, whitespaces=whitespaces)
 
     def format_amount_and_units(self, amount):
-        text = self.format_amount(amount) + ' '+ self.base_unit()
+        text = self.config.format_amount_and_units(amount)
         x = self.fx.format_amount_and_units(amount) if self.fx else None
         if text and x:
             text += ' (%s)'%x
         return text
 
     def format_fee_rate(self, fee_rate):
-        # fee_rate is in sat/kB
-        return format_fee_satoshis(fee_rate/1000, num_zeros=self.num_zeros) + ' sat/byte'
+        return self.config.format_fee_rate(fee_rate)
 
     def get_decimal_point(self):
-        return self.decimal_point
+        return self.config.get_decimal_point()
 
     def base_unit(self):
-        return decimal_point_to_base_unit_name(self.decimal_point)
+        return self.config.get_base_unit()
 
     def connect_fields(self, window, btc_e, fiat_e, fee_e):
 

electrum/gui/qt/settings_dialog.py

@@ -33,7 +33,7 @@ from PyQt5.QtWidgets import (QComboBox,  QTabWidget,
 
 from electrum.i18n import _
 from electrum import util, coinchooser, paymentrequest
-from electrum.util import base_units_list, base_unit_name_to_decimal_point
+from electrum.util import base_units_list
 
 from .util import (ColorScheme, WindowModalDialog, HelpLabel, Buttons,
                    CloseButton)
@@ -89,14 +89,14 @@ class SettingsDialog(WindowModalDialog):
         nz_label = HelpLabel(_('Zeros after decimal point') + ':', nz_help)
         nz = QSpinBox()
         nz.setMinimum(0)
-        nz.setMaximum(self.window.decimal_point)
-        nz.setValue(self.window.num_zeros)
+        nz.setMaximum(self.config.decimal_point)
+        nz.setValue(self.config.num_zeros)
         if not self.config.is_modifiable('num_zeros'):
             for w in [nz, nz_label]: w.setEnabled(False)
         def on_nz():
             value = nz.value()
-            if self.window.num_zeros != value:
-                self.window.num_zeros = value
+            if self.config.num_zeros != value:
+                self.config.num_zeros = value
                 self.config.set_key('num_zeros', value, True)
                 self.window.history_list.update()
                 self.window.address_list.update()
@@ -209,9 +209,8 @@ you close all your wallet windows. Use this to keep your local watchtower runnin
                 return
             edits = self.window.amount_e, self.window.receive_amount_e
             amounts = [edit.get_amount() for edit in edits]
-            self.window.decimal_point = base_unit_name_to_decimal_point(unit_result)
-            self.config.set_key('decimal_point', self.window.decimal_point, True)
-            nz.setMaximum(self.window.decimal_point)
+            self.config.set_base_unit(unit_result)
+            nz.setMaximum(self.config.decimal_point)
             self.window.history_list.update()
             self.window.request_list.update()
             self.window.address_list.update()

electrum/simple_config.py

@@ -13,8 +13,9 @@ from aiorpcx import NetAddress
 
 from . import util
 from . import constants
-from .util import (user_dir, make_dir,
-                   NoDynamicFeeEstimates, format_fee_satoshis, quantize_feerate)
+from .util import base_units, base_unit_name_to_decimal_point
+from .util import format_satoshis, format_fee_satoshis, decimal_point_to_base_unit_name, DECIMAL_POINT_DEFAULT
+from .util import user_dir, make_dir, NoDynamicFeeEstimates, quantize_feerate
 from .i18n import _
 from .logging import get_logger, Logger
 
@@ -103,6 +104,14 @@ class SimpleConfig(Logger):
 
         self._check_dependent_keys()
 
+        # units and formatting
+        self.decimal_point = self.get('decimal_point', DECIMAL_POINT_DEFAULT)
+        try:
+            decimal_point_to_base_unit_name(self.decimal_point)
+        except UnknownBaseUnit:
+            self.decimal_point = DECIMAL_POINT_DEFAULT
+        self.num_zeros = int(self.get('num_zeros', 0))
+
     def electrum_path(self):
         # Read electrum_path from command line
         # Otherwise use the user's default data directory.
@@ -604,6 +613,26 @@ class SimpleConfig(Logger):
             except:
                 pass
 
+    def format_amount(self, x, is_diff=False, whitespaces=False):
+        return format_satoshis(x, self.num_zeros, self.decimal_point, is_diff=is_diff, whitespaces=whitespaces)
+
+    def format_amount_and_units(self, amount):
+        return self.format_amount(amount) + ' '+ self.base_unit()
+
+    def format_fee_rate(self, fee_rate):
+        return format_fee_satoshis(fee_rate/1000, num_zeros=self.num_zeros) + ' sat/byte'
+
+    def get_base_unit(self):
+        return decimal_point_to_base_unit_name(self.decimal_point)
+
+    def set_base_unit(self, unit):
+        assert unit in base_units.keys()
+        self.decimal_point = base_unit_name_to_decimal_point(unit)
+        self.set_key('decimal_point', self.decimal_point, True)
+
+    def get_decimal_point(self):
+        return self.decimal_point
+
 
 def read_user_config(path):
     """Parse and store the user config settings in electrum.conf into user_config[]."""