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         else:
  77             self.amount = None
  78
  79         self.amount_label.setText(amount_text)
  80
  81         self.label = label
  82         label_text = "<span style='font-size: 21pt'>%s</span>" % label if label else ""
  83         self.label_label.setText(label_text)
  84
  85         msg = 'bitcoin:'+self.address
  86         if self.amount is not None:
  87             msg += '?amount=%s'%(str( self.amount))
  88             if self.label is not None:
  89                 msg += '&label=%s'%(self.label)
  90         elif self.label is not None:
  91             msg += '?label=%s'%(self.label)
  92
  93         self.qrw.set_addr( msg )
  94
  95
  96
  97
  98 class Plugin(BasePlugin):
  99
 100     def fullname(self):
 101         return 'Point of Sale'
 102
 103     def description(self):
 104         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.')
 105
 106     def init(self):
 107         self.window = self.gui.main_window
 108         self.wallet = self.window.wallet
 109
 110         self.qr_window = None
 111         self.merchant_name = self.config.get('merchant_name', 'Invoice')
 112
 113         self.window.expert_mode = True
 114         self.window.receive_list.setColumnCount(5)
 115         self.window.receive_list.setHeaderLabels([ _('Address'), _('Label'), _('Balance'), _('Tx'), _('Request')])
 116         self.requested_amounts = {}
 117         self.toggle_QR_window(True)
 118
 119     def enable(self):
 120         if not self.config.get('use_exchange_rate'):
 121             self.gui.main_window.show_message("Please enable exchange rates first!")
 122             return False
 123
 124         return BasePlugin.enable(self)
 125
 126
 127     def load_wallet(self, wallet):
 128         self.wallet = wallet
 129         self.requested_amounts = self.wallet.storage.get('requested_amounts',{})
 130
 131     def close(self):
 132         self.window.receive_list.setHeaderLabels([ _('Address'), _('Label'), _('Balance'), _('Tx')])
 133         self.window.receive_list.setColumnCount(4)
 134         for i,width in enumerate(self.window.column_widths['receive']):
 135             self.window.receive_list.setColumnWidth(i, width)
 136         self.toggle_QR_window(False)
 137
 138
 139     def close_main_window(self):
 140         if self.qr_window:
 141             self.qr_window.close()
 142             self.qr_window = None
 143
 144
 145     def timer_actions(self):
 146         if self.qr_window:
 147             self.qr_window.qrw.update_qr()
 148
 149
 150     def toggle_QR_window(self, show):
 151         if show and not self.qr_window:
 152             self.qr_window = QR_Window(self.gui.exchanger)
 153             self.qr_window.setVisible(True)
 154             self.qr_window_geometry = self.qr_window.geometry()
 155             item = self.window.receive_list.currentItem()
 156             if item:
 157                 address = str(item.text(1))
 158                 label = self.wallet.labels.get(address)
 159                 amount, currency = self.requested_amounts.get(address, (None, None))
 160                 self.qr_window.set_content( address, label, amount, currency )
 161
 162         elif show and self.qr_window and not self.qr_window.isVisible():
 163             self.qr_window.setVisible(True)
 164             self.qr_window.setGeometry(self.qr_window_geometry)
 165
 166         elif not show and self.qr_window and self.qr_window.isVisible():
 167             self.qr_window_geometry = self.qr_window.geometry()
 168             self.qr_window.setVisible(False)
 169
 170
 171
 172     def update_receive_item(self, address, item):
 173         try:
 174             amount, currency = self.requested_amounts.get(address, (None, None))
 175         except Exception:
 176             print "cannot get requested amount", address, self.requested_amounts.get(address)
 177             amount, currency = None, None
 178             self.requested_amounts.pop(address)
 179
 180         amount_str = amount + (' ' + currency if currency else '') if amount is not None  else ''
 181         item.setData(column_index,0,amount_str)
 182
 183
 184
 185     def current_item_changed(self, a):
 186         if not self.wallet:
 187             return
 188         if a is not None and self.qr_window and self.qr_window.isVisible():
 189             address = str(a.text(0))
 190             label = self.wallet.labels.get(address)
 191             try:
 192                 amount, currency = self.requested_amounts.get(address, (None, None))
 193             except Exception:
 194                 amount, currency = None, None
 195             self.qr_window.set_content( address, label, amount, currency )
 196
 197
 198
 199     def item_changed(self, item, column):
 200         if column != column_index:
 201             return
 202         address = str( item.text(0) )
 203         text = str( item.text(column) )
 204         try:
 205             seq = self.wallet.get_address_index(address)
 206             index = seq[1][1]
 207         except Exception:
 208             print "cannot get index"
 209             return
 210
 211         text = text.strip().upper()
 212         #print text
 213         m = re.match('^(\d*(|\.\d*))\s*(|BTC|EUR|USD|GBP|CNY|JPY|RUB|BRL)$', text)
 214         if m and m.group(1) and m.group(1)!='.':
 215             amount = m.group(1)
 216             currency = m.group(3)
 217             if not currency:
 218                 currency = 'BTC'
 219             else:
 220                 currency = currency.upper()
 221
 222             self.requested_amounts[address] = (amount, currency)
 223             self.wallet.storage.put('requested_amounts', self.requested_amounts, True)
 224
 225             label = self.wallet.labels.get(address)
 226             if label is None:
 227                 label = self.merchant_name + ' - %04d'%(index+1)
 228                 self.wallet.labels[address] = label
 229
 230             if self.qr_window:
 231                 self.qr_window.set_content( address, label, amount, currency )
 232
 233         else:
 234             item.setText(column,'')
 235             if address in self.requested_amounts:
 236                 self.requested_amounts.pop(address)
 237
 238         self.window.update_receive_item(self.window.receive_list.currentItem())
 239
 240
 241
 242
 243     def edit_amount(self):
 244         l = self.window.receive_list
 245         item = l.currentItem()
 246         item.setFlags(Qt.ItemIsEditable|Qt.ItemIsSelectable | Qt.ItemIsUserCheckable | Qt.ItemIsEnabled | Qt.ItemIsDragEnabled)
 247         l.editItem( item, column_index )
 248         item.setFlags(Qt.ItemIsSelectable | Qt.ItemIsUserCheckable | Qt.ItemIsEnabled | Qt.ItemIsDragEnabled)
 249
 250
 251     def receive_menu(self, menu):
 252         menu.addAction(_("Request amount"), self.edit_amount)
 253         menu.addAction(_("Show Invoice"), lambda: self.toggle_QR_window(True))
 254
 255