Add AccoutManager method setRelayFee.

Use Roboto font. Display fee in atoms / byte. Add space above relay fee
section. Halve high fee.

decred/decred/wallet/accounts.py

@@ -145,6 +145,18 @@ def setNode(self, node):
         for acct in self.accounts.values():
             acct.setNode(node)
 
+    def setRelayFee(self, idx, fee):
+        """
+        Save the relay fee for account at index.
+
+        Args:
+            idx (int): The account's index.
+            fee (int): The relay fee in smallest unit/kb.
+        """
+        acct = self.acctDB[idx]
+        acct.relayFee = fee
+        self.acctDB[idx] = acct
+
     def coinKey(self, cryptoKey):
         """
         Decrypt the coin-type extended key.

tinywallet/tinywallet/screens.py

@@ -477,7 +477,7 @@ def __init__(self, acctMgr, acct, assetScreen):
         self.ticketStats = None
         self.balance = None
         self.settingsScreen = AccountSettingsScreen(
-            self.account.relayFee, self.saveName, self.saveRelayFee
+            self.account.relayFee, self.saveName, self.setRelayFee
         )
         self.stakeScreen = StakingScreen(acct)
         self.wgt.setFixedSize(
@@ -719,15 +719,14 @@ def saveName(self, newName):
         self.assetScreen.doButtons()
         app.home()
 
-    def saveRelayFee(self, relayFee):
+    def setRelayFee(self, relayFee):
         """
         Changes and saves the relayFee of the account.
 
         Args:
             int: The new relayFee.
         """
-        self.account.relayFee = relayFee
-        self.acctMgr.saveAccount(self.account.idx)
+        self.acctMgr.setRelayFee(self.account.idx, relayFee)
 
     def stackAndSync(self):
         """
@@ -1845,7 +1844,7 @@ class AccountSettingsScreen(Screen):
     Account settings screen.
     """
 
-    def __init__(self, relayFee, saveName, saveRelayFee):
+    def __init__(self, relayFee, saveName, setRelayFee):
         """
         Args:
             saveName (function): A callback function to be called after the user
@@ -1859,7 +1858,7 @@ def __init__(self, relayFee, saveName, saveRelayFee):
             TinyDialog.maxHeight * 0.9 - TinyDialog.topMenuHeight,
         )
         self.saveName = saveName
-        self.saveRelayFee = saveRelayFee
+        self.setRelayFee = setRelayFee
 
         gear = SVGWidget("gear", h=20)
         lbl = Q.makeLabel("Account Settings", 22)
@@ -1868,6 +1867,11 @@ def __init__(self, relayFee, saveName, saveRelayFee):
 
         self.layout.addStretch(1)
 
+        def insertSpace():
+            spacer = Q.makeLabel("", 5)
+            spacer.setContentsMargins(0, 5, 0, 0)
+            grid.addWidget(spacer, row, 0, 1, 4)
+
         # ACCOUNT NAME
 
         wgt, grid = Q.makeWidget(QtWidgets.QWidget, Q.GRID)
@@ -1894,7 +1898,7 @@ def __init__(self, relayFee, saveName, saveRelayFee):
         self.feeRates = {
             self.lowStr: 4000,
             self.defaultStr: int(DefaultRelayFeePerKb),
-            self.highStr: 114000,
+            self.highStr: 50000,
         }
         self.feeLvl = ""
 
@@ -1913,22 +1917,34 @@ def setChecked(btn):
                 btn.setChecked(True)
 
         row += 1
-        grid.addWidget(Q.makeLabel("Relay Fee", 14, Q.ALIGN_LEFT), row, 0)
+        insertSpace()
+        row += 1
+        lbl = Q.makeLabel("Relay Fee", 14, Q.ALIGN_LEFT)
+        grid.addWidget(lbl, row, 0)
+        self.feeLbl = lbl = Q.makeLabel("", 14, Q.ALIGN_LEFT)
+        self.setFeeLbl(relayFee)
+        grid.addWidget(lbl, row, 1)
         row += 1
         btn1 = QtWidgets.QRadioButton(self.lowStr)
+        Q.setProperties(btn1, fontFamily="Roboto", fontSize=14)
         setChecked(btn1)
         btn1.toggled.connect(lambda: self.relayFeeChangeClicked(self.lowStr))
         btn2 = QtWidgets.QRadioButton(self.defaultStr)
+        Q.setProperties(btn2, fontFamily="Roboto", fontSize=14)
         setChecked(btn2)
         btn2.toggled.connect(lambda: self.relayFeeChangeClicked(self.defaultStr))
         btn3 = QtWidgets.QRadioButton(self.highStr)
+        Q.setProperties(btn3, fontFamily="Roboto", fontSize=14)
         setChecked(btn3)
         btn3.toggled.connect(lambda: self.relayFeeChangeClicked(self.highStr))
         wgt, _ = Q.makeRow(btn1, btn2, btn3)
         grid.addWidget(wgt, row, 0, 1, -1)
 
         self.layout.addStretch(1)
 
+    def setFeeLbl(self, fee):
+        self.feeLbl.setText(f"{fee//1000} atoms/byte")
+
     def nameChangeClicked(self, e):
         """
         Qt slot for nameField.clicked signal.
@@ -1940,7 +1956,7 @@ def nameChangeClicked(self, e):
         self.nameField.setText("")
         self.saveName(newName)
 
-    def relayFeeChangeClicked(self, feeLvl, e=None):
+    def relayFeeChangeClicked(self, feeLvl):
         """
         Qt slot connected to relay fee radio button clicked signal. Changes the
         relay fee to feeLvl.
@@ -1949,7 +1965,8 @@ def relayFeeChangeClicked(self, feeLvl, e=None):
             return
         self.feeLvl = feeLvl
         fee = self.feeRates[feeLvl]
-        self.saveRelayFee(fee)
+        self.setRelayFee(fee)
+        self.setFeeLbl(fee)
         log.info(f"relay fee changed to {fee} atoms/kb")
         app.appWindow.showSuccess(f"using {feeLvl} fees")