From c7edba0990be451352c77cb6ca7431fdf907779d Mon Sep 17 00:00:00 2001
From: ThomasV <thomasv@gitorious>
Date: Sat, 5 Jan 2013 15:23:35 +0100
Subject: [PATCH] currency conversions (bkkcoins)

---
 lib/exchange_rate.py |  5 ++++-
 lib/gui_qt.py        | 40 ++++++++++++++++++++++++++++++++++++----
 lib/simple_config.py |  2 +-
 3 files changed, 41 insertions(+), 6 deletions(-)

diff --git a/lib/exchange_rate.py b/lib/exchange_rate.py
index bde5f52d..dc6ad13a 100644
--- a/lib/exchange_rate.py
+++ b/lib/exchange_rate.py
@@ -46,9 +46,12 @@ class Exchanger(threading.Thread):
             self.parent.emit(SIGNAL("refresh_balance()"))
         except KeyError:
             pass
+            
+    def get_currencies(self):
+        return [] if self.quote_currencies == None else sorted(self.quote_currencies.keys())
 
     def _lookup_rate(self, response, quote_id):
-        return decimal.Decimal(response[str(quote_id)]["15m"])
+        return decimal.Decimal(str(response[str(quote_id)]["15m"]))
 
 if __name__ == "__main__":
     exch = Exchanger(("BRL", "CNY", "EUR", "GBP", "RUB", "USD"))
diff --git a/lib/gui_qt.py b/lib/gui_qt.py
index 914e1e91..54b2bdc7 100644
--- a/lib/gui_qt.py
+++ b/lib/gui_qt.py
@@ -38,6 +38,7 @@ except:
 
 from wallet import format_satoshis
 import bmp, mnemonic, pyqrnative, qrscanner
+import exchange_rate
 
 from decimal import Decimal
 
@@ -334,6 +335,9 @@ class ElectrumWindow(QMainWindow):
         self.connect(self, QtCore.SIGNAL('updatesignal'), self.update_wallet)
         #self.connect(self, SIGNAL('editamount'), self.edit_amount)
         self.history_list.setFocus(True)
+        
+        self.exchanger = exchange_rate.Exchanger(self)
+        self.connect(self, SIGNAL("refresh_balance()"), self.update_wallet)
 
         # dark magic fix by flatfly; https://bitcointalk.org/index.php?topic=73651.msg959913#msg959913
         if platform.system() == 'Windows':
@@ -383,6 +387,7 @@ class ElectrumWindow(QMainWindow):
                 c, u = self.wallet.get_balance()
                 text =  _( "Balance" ) + ": %s "%( format_satoshis(c,False,self.wallet.num_zeros) )
                 if u: text +=  "[%s unconfirmed]"%( format_satoshis(u,True,self.wallet.num_zeros).strip() )
+                text += self.create_quote_text(Decimal(c+u)/100000000)
                 icon = QIcon(":icons/status_connected.png")
         else:
             text = _( "Not connected" )
@@ -401,7 +406,15 @@ class ElectrumWindow(QMainWindow):
             self.update_contacts_tab()
             self.update_completions()
 
-
+    def create_quote_text(self, btc_balance):
+        quote_currency = self.config.get("currency", "None")
+        quote_balance = self.exchanger.exchange(btc_balance, quote_currency)
+        if quote_balance is None:
+            quote_text = ""
+        else:
+            quote_text = "  (%.2f %s)" % (quote_balance, quote_currency)
+        return quote_text
+        
     def create_history_tab(self):
         self.history_list = l = MyTreeWidget(self)
         l.setColumnCount(5)
@@ -1586,19 +1599,33 @@ class ElectrumWindow(QMainWindow):
         if not self.config.is_modifiable('language'):
             for w in [lang_combo, lang_label]: w.setEnabled(False)
 
+        currencies = self.exchanger.get_currencies()
+        currencies.insert(0, "None")
 
+        cur_label=QLabel(_('Currency') + ':')
+        grid_ui.addWidget(cur_label , 9, 0)
+        cur_combo = QComboBox()
+        cur_combo.addItems(currencies)
+        try:
+            index = currencies.index(self.config.get('currency', "None"))
+        except:
+            index = 0
+        cur_combo.setCurrentIndex(index)
+        grid_ui.addWidget(cur_combo, 9, 1)
+        grid_ui.addWidget(HelpButton(_('Select which currency is used for quotes. ')), 9, 2)
+        
         view_label=QLabel(_('Receive Tab') + ':')
-        grid_ui.addWidget(view_label , 9, 0)
+        grid_ui.addWidget(view_label , 10, 0)
         view_combo = QComboBox()
         view_combo.addItems([_('Simple'), _('Advanced'), _('Point of Sale')])
         view_combo.setCurrentIndex(self.receive_tab_mode)
-        grid_ui.addWidget(view_combo, 9, 1)
+        grid_ui.addWidget(view_combo, 10, 1)
         hh = _('This selects the interaction mode of the "Receive" tab. ') + '\n\n' \
              + _('Simple') +   ': ' + _('Show only addresses and labels.') + '\n\n' \
              + _('Advanced') + ': ' + _('Show address balances and add extra menu items to freeze/prioritize addresses.') + '\n\n' \
              + _('Point of Sale') + ': ' + _('Show QR code window and amounts requested for each address. Add menu item to request amount.') + '\n\n' 
         
-        grid_ui.addWidget(HelpButton(hh), 9, 2)
+        grid_ui.addWidget(HelpButton(hh), 10, 2)
         
         vbox.addLayout(ok_cancel_buttons(d))
         d.setLayout(vbox) 
@@ -1661,6 +1688,11 @@ class ElectrumWindow(QMainWindow):
         if lang_request != self.config.get('language'):
             self.config.set_key("language", lang_request, True)
             need_restart = True
+            
+        cur_request = str(currencies[cur_combo.currentIndex()])
+        if cur_request != self.config.get('currency', "None"):
+            self.config.set_key('currency', cur_request, True)
+            self.update_wallet()
 
         if need_restart:
             QMessageBox.warning(self, _('Success'), _('Please restart Electrum to activate the new GUI settings'), _('OK'))
diff --git a/lib/simple_config.py b/lib/simple_config.py
index a94b837e..8cfa24dd 100644
--- a/lib/simple_config.py
+++ b/lib/simple_config.py
@@ -94,7 +94,7 @@ a SimpleConfig instance then reads the wallet file.
             try:
                 out = ast.literal_eval(out)
             except:
-                print "type error, using default value"
+                print "type error for '%s': using default value"%key
                 out = default
 
         return out