Fixes rounding display issue on Android

Bet size was showing very long float.

Author: AndreMiras

src/constants.py

@@ -0,0 +1,3 @@
+# default pyethapp keystore path
+KEYSTORE_DIR_SUFFIX = ".config/pyethapp/keystore/"
+ROUND_DIGITS = 1

src/etheroll.kv

@@ -10,7 +10,7 @@
 #:import Toolbar kivymd.toolbar.Toolbar
 #:import AddressButton addressbutton.AddressButton
 #:import RollResultsScreen roll_results.RollResultsScreen
-#:import ROUND_DIGITS etheroll.ROUND_DIGITS
+#:import ROUND_DIGITS constants.ROUND_DIGITS
 
 
 # need this hack to push widgets up

src/etheroll.py

@@ -21,6 +21,7 @@
 from raven.conf import setup_logging
 from raven.handlers.logging import SentryHandler
 
+import constants
 from utils import (Dialog, SubScreen, patch_find_library_android,
                    patch_typing_python351, run_in_thread)
 from version import __version__
@@ -31,10 +32,6 @@
 from ethereum_utils import AccountUtils  # noqa: E402, isort:skip
 import pyetheroll  # noqa: E402, isort:skip
 
-# default pyethapp keystore path
-KEYSTORE_DIR_SUFFIX = ".config/pyethapp/keystore/"
-ROUND_DIGITS = 1
-
 
 class PasswordForm(BoxLayout):
     password = StringProperty()
@@ -329,7 +326,7 @@ def _after_init(self, dt):
 
     @staticmethod
     def bind_slider_input(
-            slider, inpt, cast_to=float, round_digits=ROUND_DIGITS):
+            slider, inpt, cast_to=float, round_digits=constants.ROUND_DIGITS):
         """
         Binds slider <-> input both ways.
         """
@@ -356,7 +353,8 @@ def value(self):
         Returns normalized bet size value.
         """
         try:
-            return round(float(self.ids.bet_size_input_id.text), ROUND_DIGITS)
+            return round(
+                float(self.ids.bet_size_input_id.text), constants.ROUND_DIGITS)
         except ValueError:
             return 0
 
@@ -490,7 +488,8 @@ def get_default_keystore_path():
         # uses kivy user_data_dir (/sdcard/<app_name>)
         if platform == "android":
             KEYSTORE_DIR_PREFIX = App.get_running_app().user_data_dir
-        keystore_dir = os.path.join(KEYSTORE_DIR_PREFIX, KEYSTORE_DIR_SUFFIX)
+        keystore_dir = os.path.join(
+            KEYSTORE_DIR_PREFIX, constants.KEYSTORE_DIR_SUFFIX)
         return keystore_dir
 
     def bind_wager_property(self):

src/roll_results.py

@@ -3,6 +3,7 @@
 from kivy.properties import ListProperty
 from kivymd.list import TwoLineListItem
 
+import constants
 from utils import SubScreen, load_kv_from_py, run_in_thread
 
 load_kv_from_py(__file__)
@@ -51,8 +52,8 @@ def create_item_from_dict(roll_dict):
         """
         bet_size_ether = roll_dict['bet_size_ether']
         roll_under = roll_dict['roll_under']
-        text = 'roll under: {}, bet size: {} ETH'.format(
-            roll_under, bet_size_ether)
+        text = 'roll under: {0}, bet size: {1:.{2}f} ETH'.format(
+            roll_under, bet_size_ether, constants.ROUND_DIGITS)
         secondary_text = text
         list_item = TwoLineListItem(
             text=text, secondary_text=secondary_text)