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.qrcodewidget import QRCodeWidget
  11 from electrum_gui import bmp, pyqrnative
  12
  13 from electrum_gui.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 = 3
  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 config = {}
  96
  97 def get_info():
  98     return 'Point of Sale', _('Show QR code window and amounts requested for each address. Add menu item to request amount.')
  99
 100 def init(gui):
 101     global config
 102     config = gui.config
 103     gui.requested_amounts = config.get('requested_amounts',{})
 104     gui.merchant_name = config.get('merchant_name', 'Invoice')
 105     gui.qr_window = None
 106     do_enable(gui, is_enabled())
 107
 108 def is_enabled():
 109     return config.get('pointofsale') is True
 110
 111 def is_available():
 112     return True
 113
 114
 115 def toggle(gui):
 116     enabled = not is_enabled()
 117     config.set_key('pointofsale', enabled, True)
 118     do_enable(gui, enabled)
 119     update_gui(gui)
 120     return enabled
 121
 122
 123 def do_enable(gui, enabled):
 124     if enabled:
 125         gui.expert_mode = True
 126         gui.set_hook('item_changed', item_changed)
 127         gui.set_hook('current_item_changed', recv_changed)
 128         gui.set_hook('receive_menu', receive_menu)
 129         gui.set_hook('update_receive_item', update_receive_item)
 130         gui.set_hook('timer_actions', timer_actions)
 131         gui.set_hook('close_main_window', close_main_window)
 132         gui.set_hook('init', update_gui)
 133     else:
 134         gui.unset_hook('item_changed', item_changed)
 135         gui.unset_hook('current_item_changed', recv_changed)
 136         gui.unset_hook('receive_menu', receive_menu)
 137         gui.unset_hook('update_receive_item', update_receive_item)
 138         gui.unset_hook('timer_actions', timer_actions)
 139         gui.unset_hook('close_main_window', close_main_window)
 140         gui.unset_hook('init', update_gui)
 141
 142
 143
 144 def update_gui(gui):
 145     enabled = is_enabled()
 146     if enabled:
 147         gui.receive_list.setHeaderLabels([ _('Address'), _('Label'), _('Balance'), _('Request')])
 148     else:
 149         gui.receive_list.setHeaderLabels([ _('Address'), _('Label'), _('Balance'), _('Tx')])
 150
 151     toggle_QR_window(gui, enabled)
 152
 153
 154
 155 def toggle_QR_window(self, show):
 156     if show and not self.qr_window:
 157         self.qr_window = QR_Window(self.exchanger)
 158         self.qr_window.setVisible(True)
 159         self.qr_window_geometry = self.qr_window.geometry()
 160         item = self.receive_list.currentItem()
 161         if item:
 162             address = str(item.text(1))
 163             label = self.wallet.labels.get(address)
 164             amount, currency = self.requested_amounts.get(address, (None, None))
 165             self.qr_window.set_content( address, label, amount, currency )
 166
 167     elif show and self.qr_window and not self.qr_window.isVisible():
 168         self.qr_window.setVisible(True)
 169         self.qr_window.setGeometry(self.qr_window_geometry)
 170
 171     elif not show and self.qr_window and self.qr_window.isVisible():
 172         self.qr_window_geometry = self.qr_window.geometry()
 173         self.qr_window.setVisible(False)
 174
 175
 176
 177
 178 def item_changed(self, item, column):
 179     if column == column_index:
 180         address = str( item.text(0) )
 181         text = str( item.text(column) )
 182         try:
 183             seq = self.wallet.get_address_index(address)
 184             index = seq[-1]
 185         except:
 186             print "cannot get index"
 187             return
 188
 189         text = text.strip().upper()
 190         print text
 191         m = re.match('^(\d+(|\.\d*))\s*(|BTC|EUR|USD|GBP|CNY|JPY|RUB|BRL)$', text)
 192         if m:
 193             amount = m.group(1)
 194             currency = m.group(3)
 195             if not currency:
 196                 currency = 'BTC'
 197             else:
 198                 currency = currency.upper()
 199
 200             self.requested_amounts[address] = (amount, currency)
 201             self.wallet.config.set_key('requested_amounts', self.requested_amounts, True)
 202
 203             label = self.wallet.labels.get(address)
 204             if label is None:
 205                 label = self.merchant_name + ' - %04d'%(index+1)
 206                 self.wallet.labels[address] = label
 207
 208             if self.qr_window:
 209                 self.qr_window.set_content( address, label, amount, currency )
 210
 211         else:
 212             item.setText(column,'')
 213             if address in self.requested_amounts:
 214                 self.requested_amounts.pop(address)
 215
 216         self.update_receive_item(self.receive_list.currentItem())
 217
 218
 219 def recv_changed(self, a):
 220     if a is not None and self.qr_window and self.qr_window.isVisible():
 221         address = str(a.text(0))
 222         label = self.wallet.labels.get(address)
 223         try:
 224             amount, currency = self.requested_amounts.get(address, (None, None))
 225         except:
 226             amount, currency = None, None
 227         self.qr_window.set_content( address, label, amount, currency )
 228
 229
 230
 231 def edit_amount(self):
 232     l = self.receive_list
 233     item = l.currentItem()
 234     item.setFlags(Qt.ItemIsEditable|Qt.ItemIsSelectable | Qt.ItemIsUserCheckable | Qt.ItemIsEnabled | Qt.ItemIsDragEnabled)
 235     l.editItem( item, column_index )
 236     item.setFlags(Qt.ItemIsSelectable | Qt.ItemIsUserCheckable | Qt.ItemIsEnabled | Qt.ItemIsDragEnabled)
 237
 238 def receive_menu(self, menu):
 239     menu.addAction(_("Request amount"), lambda: edit_amount(self))
 240
 241
 242 def update_receive_item(self, address, item):
 243     try:
 244         amount, currency = self.requested_amounts.get(address, (None, None))
 245     except:
 246         print "cannot get requested amount", address, self.requested_amounts.get(address)
 247         amount, currency = None, None
 248         self.requested_amounts.pop(address)
 249
 250     amount_str = amount + (' ' + currency if currency else '') if amount is not None  else ''
 251     item.setData(column_index,0,amount_str)
 252
 253
 254 def close_main_window(self):
 255     if self.qr_window:
 256         self.qr_window.close()
 257         self.qr_window = None
 258
 259
 260 def timer_actions(self):
 261     if self.qr_window:
 262         self.qr_window.qrw.update_qr()