option to display zeros after decimal point

gui.py

@@ -249,9 +249,24 @@ def run_settings_dialog(wallet, parent):
     fee.show()
     vbox.pack_start(fee, False,False, 5)
             
+    nz = gtk.HBox()
+    nz_entry = gtk.Entry()
+    nz_label = gtk.Label('Display zeros:')
+    nz_label.set_size_request(150,10)
+    nz_label.show()
+    nz.pack_start(nz_label,False, False, 10)
+    nz_entry.set_text( str( wallet.num_zeros ))
+    nz_entry.connect('changed', numbify, True)
+    nz_entry.show()
+    nz.pack_start(nz_entry,False,False, 10)
+    add_help_button(nz, "Number of zeros displayed after the decimal point.\nFor example, if this number is 2, then '5.' is displayed as '5.00'")
+    nz.show()
+    vbox.pack_start(nz, False,False, 5)
+            
     dialog.show()
     r = dialog.run()
     fee = fee_entry.get_text()
+    nz = nz_entry.get_text()
         
     dialog.destroy()
     if r==gtk.RESPONSE_CANCEL:
@@ -262,9 +277,19 @@ def run_settings_dialog(wallet, parent):
     except:
         show_message("error")
         return
+    if wallet.fee != fee:
+        wallet.fee = fee
+        wallet.save()
 
-    wallet.fee = fee
+    try:
-    wallet.save()
+        nz = int( nz )
+        if nz>8: nz = 8
+    except:
+        show_message("error")
+        return
+    if wallet.num_zeros != nz:
+        wallet.num_zeros = nz
+        wallet.save()
 
 
 
@@ -1104,8 +1129,8 @@ class ElectrumWindow:
                 self.status_image.set_from_stock(gtk.STOCK_YES, gtk.ICON_SIZE_MENU)
                 self.network_button.set_tooltip_text("Connected to %s:%d.\n%d blocks\nresponse time: %f"%(interface.host, interface.port, self.wallet.blocks, interface.rtime))
                 c, u = self.wallet.get_balance()
-                text =  "Balance: %s "%( format_satoshis(c) )
+                text =  "Balance: %s "%( format_satoshis(c,False,self.wallet.num_zeros) )
-                if u: text +=  "[%s unconfirmed]"%( format_satoshis(u,True).strip() )
+                if u: text +=  "[%s unconfirmed]"%( format_satoshis(u,True,self.wallet.num_zeros).strip() )
         else:
             self.status_image.set_from_stock(gtk.STOCK_NO, gtk.ICON_SIZE_MENU)
             self.network_button.set_tooltip_text("Trying to contact %s.\n%d blocks"%(interface.host, self.wallet.blocks))
@@ -1187,7 +1212,7 @@ class ElectrumWindow:
                 
 
             self.history_list.prepend( [tx_hash, conf_icon, time_str, label, is_default_label,
-                                        format_satoshis(v,True), format_satoshis(balance), tooltip, details] )
+                                        format_satoshis(v,True,self.wallet.num_zeros), format_satoshis(balance,False,self.wallet.num_zeros), tooltip, details] )
         if cursor: self.history_treeview.set_cursor( cursor )
 
 

gui_qt.py

@@ -208,8 +208,8 @@ class ElectrumWindow(QMainWindow):
                 icon = QIcon(":icons/status_waiting.png")
             else:
                 c, u = self.wallet.get_balance()
-                text =  "Balance: %s "%( format_satoshis(c) )
+                text =  "Balance: %s "%( format_satoshis(c,False,self.wallet.num_zeros) )
-                if u: text +=  "[%s unconfirmed]"%( format_satoshis(u,True).strip() )
+                if u: text +=  "[%s unconfirmed]"%( format_satoshis(u,True,self.wallet.num_zeros).strip() )
                 icon = QIcon(":icons/status_connected.png")
         else:
             text = "Not connected"
@@ -337,7 +337,7 @@ class ElectrumWindow(QMainWindow):
             is_default_label = (label == '') or (label is None)
             if is_default_label: label = tx['default_label']
 
-            item = QTreeWidgetItem( [ '', time_str, label, format_satoshis(v,True), format_satoshis(balance)] )
+            item = QTreeWidgetItem( [ '', time_str, label, format_satoshis(v,True,self.wallet.num_zeros), format_satoshis(balance,False,self.wallet.num_zeros)] )
             item.setFont(2, QFont(MONOSPACE_FONT))
             item.setFont(3, QFont(MONOSPACE_FONT))
             item.setFont(4, QFont(MONOSPACE_FONT))
@@ -883,14 +883,20 @@ class ElectrumWindow(QMainWindow):
 
         grid = QGridLayout()
         grid.setSpacing(8)
+        vbox.addLayout(grid)
 
         fee_e = QLineEdit()
         fee_e.setText("%s"% str( Decimal( self.wallet.fee)/100000000 ) )
         grid.addWidget(QLabel('Fee per tx. input'), 2, 0)
         grid.addWidget(fee_e, 2, 1)
-        vbox.addLayout(grid)
         fee_e.textChanged.connect(lambda: numbify(fee_e,False))
 
+        nz_e = QLineEdit()
+        nz_e.setText("%d"% self.wallet.num_zeros)
+        grid.addWidget(QLabel('Zeros displayed after decimal point'), 3, 0)
+        grid.addWidget(nz_e, 3, 1)
+        nz_e.textChanged.connect(lambda: numbify(nz_e,True))
+
         vbox.addLayout(ok_cancel_buttons(d))
         d.setLayout(vbox) 
 
@@ -903,8 +909,22 @@ class ElectrumWindow(QMainWindow):
             QMessageBox.warning(self, 'Error', 'Invalid value:%s'%fee, 'OK')
             return
 
-        self.wallet.fee = fee
+        if self.wallet.fee != fee:
-        self.wallet.save()
+            self.wallet.fee = fee
+            self.wallet.save()
+        
+        nz = unicode(nz_e.text())
+        try:
+            nz = int( nz )
+            if nz>8: nz=8
+        except:
+            QMessageBox.warning(self, 'Error', 'Invalid value:%s'%nz, 'OK')
+            return
+
+        if self.wallet.num_zeros != nz:
+            self.wallet.num_zeros = nz
+            self.update_history_tab()
+            self.wallet.save()
 
     @staticmethod 
     def network_dialog(wallet, parent=None):

wallet.py

@@ -223,13 +223,14 @@ def raw_tx( inputs, outputs, for_sig = None ):
 
 
 
-def format_satoshis(x, is_diff=False):
+def format_satoshis(x, is_diff=False, num_zeros = 0):
     from decimal import Decimal
     s = str( Decimal(x) /100000000 )
     if is_diff and x>0:
         s = "+" + s
     if not '.' in s: s += '.'
     p = s.find('.')
+    s += "0"*( 1 + num_zeros - ( len(s) - p ))
     s += " "*( 9 - ( len(s) - p ))
     s = " "*( 5 - ( p )) + s
     return s
@@ -558,6 +559,7 @@ class Wallet:
             'aliases':self.aliases,
             'authorities':self.authorities,
             'receipts':self.receipts,
+            'num_zeros':self.num_zeros,
             }
         f = open(self.path,"w")
         f.write( repr(s) )
@@ -593,6 +595,7 @@ class Wallet:
             self.aliases = d.get('aliases',{})
             self.authorities = d.get('authorities',{})
             self.receipts = d.get('receipts',{})
+            self.num_zeros = d.get('num_zeros',0)
         except:
             raise BaseException("cannot read wallet file")