plugins/pointofsale.py

   1 import re
   2 import platform
   3 from decimal import Decimal
   4
   5 from PyQt4.QtGui import *
   6 from PyQt4.QtCore import *
   7 import PyQt4.QtCore as QtCore
   8 import PyQt4.QtGui as QtGui
   9
  10 from electrum_gui.qt.qrcodewidget import QRCodeWidget
  11
  12 from electrum import bmp, pyqrnative, BasePlugin
  13 from electrum.i18n import _
  14
  15
  16 if platform.system() == 'Windows':
  17     MONOSPACE_FONT = 'Lucida Console'
  18 elif platform.system() == 'Darwin':
  19     MONOSPACE_FONT = 'Monaco'
  20 else:
  21     MONOSPACE_FONT = 'monospace'
  22
  23 column_index = 4
  24
  25 class QR_Window(QWidget):
  26
  27     def __init__(self, exchanger):
  28         QWidget.__init__(self)
  29         self.exchanger = exchanger
  30         self.setWindowTitle('Electrum - '+_('Invoice'))
  31         self.setMinimumSize(800, 250)
  32         self.address = ''
  33         self.label = ''
  34         self.amount = 0
  35         self.setFocusPolicy(QtCore.Qt.NoFocus)
  36
  37         main_box = QHBoxLayout()
  38
  39         self.qrw = QRCodeWidget()
  40         main_box.addWidget(self.qrw, 1)
  41
  42         vbox = QVBoxLayout()
  43         main_box.addLayout(vbox)
  44
  45         self.address_label = QLabel("")
  46         #self.address_label.setFont(QFont(MONOSPACE_FONT))
  47         vbox.addWidget(self.address_label)
  48
  49         self.label_label = QLabel("")
  50         vbox.addWidget(self.label_label)
  51
  52         self.amount_label = QLabel("")
  53         vbox.addWidget(self.amount_label)
  54
  55         vbox.addStretch(1)
  56         self.setLayout(main_box)
  57
  58
  59     def set_content(self, addr, label, amount, currency):
  60         self.address = addr
  61         address_text = "<span style='font-size: 18pt'>%s</span>" % addr if addr else ""
  62         self.address_label.setText(address_text)
  63
  64         if currency == 'BTC': currency = None
  65         amount_text = ''
  66         if amount:
  67             if currency:
  68                 self.amount = Decimal(amount) / self.exchanger.exchange(1, currency) if currency else amount
  69             else:
  70                 self.amount = Decimal(amount)
  71             self.amount = self.amount.quantize(Decimal('1.0000'))
  72
  73             if currency:
  74                 amount_text += "<span style='font-size: 18pt'>%s %s</span><br/>" % (amount, currency)
  75             amount_text += "<span style='font-size: 21pt'>%s</span> <span style='font-size: 16pt'>BTC</span> " % str(self.amount)
  76         self.amount_label.setText(amount_text)
  77
  78         self.label = label
  79         label_text = "<span style='font-size: 21pt'>%s</span>" % label if label else ""
  80         self.label_label.setText(label_text)
  81
  82         msg = 'bitcoin:'+self.address
  83         if self.amount is not None:
  84             msg += '?amount=%s'%(str( self.amount))
  85             if self.label is not None:
  86                 msg += '&label=%s'%(self.label)
  87         elif self.label is not None:
  88             msg += '?label=%s'%(self.label)
  89
  90         self.qrw.set_addr( msg )
  91
  92
  93
  94
  95 class Plugin(BasePlugin):
  96
  97     def fullname(self):
  98         return 'Point of Sale'
  99
 100     def description(self):
 101         return _('Show QR code window and amounts requested for each address. Add menu item to request amount.')+_(' Note: This requires the exchange rate plugin to be installed.')
 102
 103     def init(self):
 104         self.window = self.gui.main_window
 105         self.wallet = self.window.wallet
 106
 107         self.qr_window = None
 108         self.merchant_name = self.config.get('merchant_name', 'Invoice')
 109
 110         self.window.expert_mode = True
 111         self.window.receive_list.setColumnCount(5)
 112         self.window.receive_list.setHeaderLabels([ _('Address'), _('Label'), _('Balance'), _('Tx'), _('Request')])
 113         self.requested_amounts = {}
 114         self.toggle_QR_window(True)
 115
 116     def enable(self):
 117         if not self.config.get('use_exchange_rate'):
 118             self.gui.main_window.show_message("Please enable exchange rates first!")
 119             return False
 120
 121         return BasePlugin.enable(self)
 122
 123
 124     def load_wallet(self, wallet):
 125         self.wallet = wallet
 126         self.requested_amounts = self.wallet.storage.get('requested_amounts',{})
 127
 128     def close(self):
 129         self.window.receive_list.setHeaderLabels([ _('Address'), _('Label'), _('Balance'), _('Tx')])
 130         self.window.receive_list.setColumnCount(4)
 131         for i,width in enumerate(self.window.column_widths['receive']):
 132             self.window.receive_list.setColumnWidth(i, width)
 133         self.toggle_QR_window(False)
 134
 135
 136     def close_main_window(self):
 137         if self.qr_window:
 138             self.qr_window.close()
 139             self.qr_window = None
 140
 141
 142     def timer_actions(self):
 143         if self.qr_window:
 144             self.qr_window.qrw.update_qr()
 145
 146
 147     def toggle_QR_window(self, show):
 148         if show and not self.qr_window:
 149             self.qr_window = QR_Window(self.gui.exchanger)
 150             self.qr_window.setVisible(True)
 151             self.qr_window_geometry = self.qr_window.geometry()
 152             item = self.window.receive_list.currentItem()
 153             if item:
 154                 address = str(item.text(1))
 155                 label = self.wallet.labels.get(address)
 156                 amount, currency = self.requested_amounts.get(address, (None, None))
 157                 self.qr_window.set_content( address, label, amount, currency )
 158
 159         elif show and self.qr_window and not self.qr_window.isVisible():
 160             self.qr_window.setVisible(True)
 161             self.qr_window.setGeometry(self.qr_window_geometry)
 162
 163         elif not show and self.qr_window and self.qr_window.isVisible():
 164             self.qr_window_geometry = self.qr_window.geometry()
 165             self.qr_window.setVisible(False)
 166
 167
 168
 169     def update_receive_item(self, address, item):
 170         try:
 171             amount, currency = self.requested_amounts.get(address, (None, None))
 172         except Exception:
 173             print "cannot get requested amount", address, self.requested_amounts.get(address)
 174             amount, currency = None, None
 175             self.requested_amounts.pop(address)
 176
 177         amount_str = amount + (' ' + currency if currency else '') if amount is not None  else ''
 178         item.setData(column_index,0,amount_str)
 179
 180
 181
 182     def current_item_changed(self, a):
 183         if not self.wallet:
 184             return
 185         if a is not None and self.qr_window and self.qr_window.isVisible():
 186             address = str(a.text(0))
 187             label = self.wallet.labels.get(address)
 188             try:
 189                 amount, currency = self.requested_amounts.get(address, (None, None))
 190             except Exception:
 191                 amount, currency = None, None
 192             self.qr_window.set_content( address, label, amount, currency )
 193
 194
 195
 196     def item_changed(self, item, column):
 197         if column != column_index:
 198             return
 199         address = str( item.text(0) )
 200         text = str( item.text(column) )
 201         try:
 202             seq = self.wallet.get_address_index(address)
 203             index = seq[1][1]
 204         except Exception:
 205             print "cannot get index"
 206             return
 207
 208         text = text.strip().upper()
 209         #print text
 210         m = re.match('^(\d*(|\.\d*))\s*(|BTC|EUR|USD|GBP|CNY|JPY|RUB|BRL)$', text)
 211         if m and m.group(1) and m.group(1)!='.':
 212             amount = m.group(1)
 213             currency = m.group(3)
 214             if not currency:
 215                 currency = 'BTC'
 216             else:
 217                 currency = currency.upper()
 218
 219             self.requested_amounts[address] = (amount, currency)
 220             self.wallet.storage.put('requested_amounts', self.requested_amounts, True)
 221
 222             label = self.wallet.labels.get(address)
 223             if label is None:
 224                 label = self.merchant_name + ' - %04d'%(index+1)
 225                 self.wallet.labels[address] = label
 226
 227             if self.qr_window:
 228                 self.qr_window.set_content( address, label, amount, currency )
 229
 230         else:
 231             item.setText(column,'')
 232             if address in self.requested_amounts:
 233                 self.requested_amounts.pop(address)
 234
 235         self.window.update_receive_item(self.window.receive_list.currentItem())
 236
 237
 238
 239
 240     def edit_amount(self):
 241         l = self.window.receive_list
 242         item = l.currentItem()
 243         item.setFlags(Qt.ItemIsEditable|Qt.ItemIsSelectable | Qt.ItemIsUserCheckable | Qt.ItemIsEnabled | Qt.ItemIsDragEnabled)
 244         l.editItem( item, column_index )
 245         item.setFlags(Qt.ItemIsSelectable | Qt.ItemIsUserCheckable | Qt.ItemIsEnabled | Qt.ItemIsDragEnabled)
 246
 247
 248     def receive_menu(self, menu):
 249         menu.addAction(_("Request amount"), self.edit_amount)
 250         menu.addAction(_("Show Invoice"), lambda: self.toggle_QR_window(True))
 251
 252