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