lib/gui_lite.py

   1 from PyQt4.QtCore import *
   2 from PyQt4.QtGui import *
   3 from i18n import _
   4 import decimal
   5 import random
   6 import re
   7 import sys
   8 import time
   9
  10 try:
  11     import lib.gui_qt as gui_qt
  12 except ImportError:
  13     import electrum.gui_qt as gui_qt
  14
  15 def IconButton(filename, parent=None):
  16     pixmap = QPixmap(filename)
  17     icon = QIcon(pixmap)
  18     return QPushButton(icon, "", parent)
  19
  20 class Timer(QThread):
  21     def run(self):
  22         while True:
  23             self.emit(SIGNAL('timersignal'))
  24             time.sleep(0.5)
  25
  26 class ElectrumGui:
  27
  28     def __init__(self, wallet):
  29         self.wallet = wallet
  30         self.app = QApplication(sys.argv)
  31         with open("data/style.css") as style_file:
  32             self.app.setStyleSheet(style_file.read())
  33
  34     def main(self, url):
  35         actuator = MiniActuator(self.wallet)
  36         self.mini = MiniWindow(actuator, self.expand)
  37         driver = MiniDriver(self.wallet, self.mini)
  38
  39         timer = Timer()
  40         timer.start()
  41         self.expert = gui_qt.ElectrumWindow(self.wallet)
  42         self.expert.connect_slots(timer)
  43         self.expert.update_wallet()
  44
  45         sys.exit(self.app.exec_())
  46
  47     def expand(self):
  48         self.mini.hide()
  49         self.expert.show()
  50
  51 class MiniWindow(QDialog):
  52
  53     def __init__(self, actuator, expand_callback):
  54         super(MiniWindow, self).__init__()
  55
  56         self.actuator = actuator
  57
  58         accounts_button = IconButton("data/icons/accounts.png")
  59         accounts_button.setObjectName("accounts_button")
  60
  61         self.accounts_selector = QMenu()
  62         accounts_button.setMenu(self.accounts_selector)
  63
  64         interact_button = IconButton("data/icons/interact.png")
  65         interact_button.setObjectName("interact_button")
  66
  67         app_menu = QMenu()
  68         report_action = app_menu.addAction(_("&Report Bug"))
  69         about_action = app_menu.addAction(_("&About Electrum"))
  70         app_menu.addSeparator()
  71         quit_action = app_menu.addAction(_("&Quit"))
  72         interact_button.setMenu(app_menu)
  73
  74         self.connect(report_action, SIGNAL("triggered()"),
  75                      self.show_report_bug)
  76         self.connect(about_action, SIGNAL("triggered()"), self.show_about)
  77         self.connect(quit_action, SIGNAL("triggered()"), self.close)
  78
  79         expand_button = IconButton("data/icons/expand.png")
  80         expand_button.setObjectName("expand_button")
  81         self.connect(expand_button, SIGNAL("clicked()"), expand_callback)
  82
  83         self.balance_label = BalanceLabel()
  84         self.balance_label.setObjectName("balance_label")
  85
  86         copy_button = QPushButton(_("&Copy Address"))
  87         copy_button.setObjectName("copy_button")
  88         copy_button.setDefault(True)
  89         self.connect(copy_button, SIGNAL("clicked()"),
  90                      self.actuator.copy_address)
  91
  92         # Use QCompleter
  93         self.address_input = TextedLineEdit(_("Enter a Bitcoin address..."))
  94         self.address_input.setObjectName("address_input")
  95         self.connect(self.address_input, SIGNAL("textChanged(QString)"),
  96                      self.address_field_changed)
  97         metrics = QFontMetrics(qApp.font())
  98         self.address_input.setMinimumWidth(
  99             metrics.width("1E4vM9q25xsyDwWwdqHUWnwshdWC9PykmL"))
 100
 101         self.valid_address = QCheckBox()
 102         self.valid_address.setObjectName("valid_address")
 103         self.valid_address.setEnabled(False)
 104         self.valid_address.setChecked(False)
 105
 106         address_layout = QHBoxLayout()
 107         address_layout.addWidget(self.address_input)
 108         address_layout.addWidget(self.valid_address)
 109
 110         self.amount_input = TextedLineEdit(_("... and amount"))
 111         self.amount_input.setObjectName("amount_input")
 112         # This is changed according to the user's displayed balance
 113         self.amount_validator = QDoubleValidator(self.amount_input)
 114         self.amount_validator.setNotation(QDoubleValidator.StandardNotation)
 115         self.amount_validator.setRange(0, 0)
 116         self.amount_validator.setDecimals(2)
 117         self.amount_input.setValidator(self.amount_validator)
 118
 119         amount_layout = QHBoxLayout()
 120         amount_layout.addWidget(self.amount_input)
 121         amount_layout.addStretch()
 122
 123         send_button = QPushButton(_("&Send"))
 124         send_button.setObjectName("send_button")
 125         self.connect(send_button, SIGNAL("clicked()"), self.send)
 126
 127         main_layout = QGridLayout(self)
 128         main_layout.addWidget(accounts_button, 0, 0)
 129         main_layout.addWidget(interact_button, 1, 0)
 130         main_layout.addWidget(expand_button, 2, 0)
 131
 132         main_layout.addWidget(self.balance_label, 0, 1)
 133         main_layout.addWidget(copy_button, 0, 2)
 134
 135         main_layout.addLayout(address_layout, 1, 1, 1, -1)
 136
 137         main_layout.addLayout(amount_layout, 2, 1)
 138         main_layout.addWidget(send_button, 2, 2)
 139
 140         self.setWindowTitle("Electrum")
 141         self.setWindowFlags(Qt.Window|Qt.MSWindowsFixedSizeDialogHint)
 142         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 143         self.setObjectName("main_window")
 144         self.show()
 145
 146     def closeEvent(self, event):
 147         super(MiniWindow, self).closeEvent(event)
 148         qApp.quit()
 149
 150     def activate(self):
 151         pass
 152
 153     def deactivate(self):
 154         pass
 155
 156     def set_balances(self, btc_balance, quote_balance, quote_currency):
 157         self.balance_label.set_balances( \
 158             btc_balance, quote_balance, quote_currency)
 159         self.amount_validator.setRange(0, btc_balance)
 160         main_account_info = \
 161             "Checking - %s BTC (%s %s)" % (btc_balance,
 162                                            quote_balance, quote_currency)
 163         self.setWindowTitle("Electrum - %s" % main_account_info)
 164         self.accounts_selector.clear()
 165         self.accounts_selector.addAction("%s" % main_account_info)
 166
 167     def send(self):
 168         self.actuator.send(self.address_input.text(),
 169                            self.amount_input.text(), self)
 170
 171     def address_field_changed(self, address):
 172         if self.actuator.is_valid(address):
 173             self.valid_address.setChecked(True)
 174         else:
 175             self.valid_address.setChecked(False)
 176
 177     def show_about(self):
 178         QMessageBox.about(self, "Electrum",
 179             "Electrum's focus is speed, with low resource usage and simplifying Bitcoin. You do not need to perform regular backups, because your wallet can be recovered from a secret phrase that you can memorize or write on paper. Startup times are instant because it operates in conjuction with high-performance servers that handle the most complicated parts of the Bitcoin system.")
 180
 181     def show_report_bug(self):
 182         QMessageBox.information(self, "Electrum - Reporting Bugs",
 183             "Email bug reports to %s@%s.net" % ("genjix", "riseup"))
 184
 185 class BalanceLabel(QLabel):
 186
 187     def __init__(self, parent=None):
 188         super(QLabel, self).__init__("Connecting...", parent)
 189
 190     def set_balances(self, btc_balance, quote_balance, quote_currency):
 191         label_text = "<span style='font-size: 16pt'>%s</span> <span style='font-size: 10pt'>BTC</span> <span style='font-size: 10pt'>(%s %s)</span>" % (btc_balance, quote_balance, quote_currency)
 192         self.setText(label_text)
 193
 194 class TextedLineEdit(QLineEdit):
 195
 196     def __init__(self, inactive_text, parent=None):
 197         super(QLineEdit, self).__init__(parent)
 198         self.inactive_text = inactive_text
 199         self.become_inactive()
 200
 201     def mousePressEvent(self, event):
 202         if self.isReadOnly():
 203             self.become_active()
 204         QLineEdit.mousePressEvent(self, event)
 205
 206     def focusOutEvent(self, event):
 207         if self.text() == "":
 208             self.become_inactive()
 209         QLineEdit.focusOutEvent(self, event)
 210
 211     def focusInEvent(self, event):
 212         if self.isReadOnly():
 213             self.become_active()
 214         QLineEdit.focusInEvent(self, event)
 215
 216     def become_inactive(self):
 217         self.setText(self.inactive_text)
 218         self.setReadOnly(True)
 219         self.recompute_style()
 220
 221     def become_active(self):
 222         self.setText("")
 223         self.setReadOnly(False)
 224         self.recompute_style()
 225
 226     def recompute_style(self):
 227         qApp.style().unpolish(self)
 228         qApp.style().polish(self)
 229         # also possible but more expensive:
 230         #qApp.setStyleSheet(qApp.styleSheet())
 231
 232 class MiniActuator:
 233
 234     def __init__(self, wallet):
 235         self.wallet = wallet
 236
 237     def copy_address(self):
 238         addrs = [addr for addr in self.wallet.all_addresses()
 239                  if not self.wallet.is_change(addr)]
 240         qApp.clipboard().setText(random.choice(addrs))
 241
 242     def send(self, address, amount, parent_window):
 243         recipient = unicode(address).strip()
 244
 245         # alias
 246         match1 = re.match(ALIAS_REGEXP, r)
 247         # label or alias, with address in brackets
 248         match2 = re.match('(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>', r)
 249
 250         if match1:
 251             dest_address = \
 252                 self.wallet.get_alias(recipient, True,
 253                                       self.show_message, self.question)
 254             if not dest_address:
 255                 return
 256         elif match2:
 257             dest_address = match2.group(2)
 258         else:
 259             dest_address = recipient
 260
 261         if not self.wallet.is_valid(dest_address):
 262             QMessageBox.warning(parent_window, _('Error'),
 263                 _('Invalid Bitcoin Address') + ':\n' + dest_address, _('OK'))
 264             return
 265
 266         convert_amount = lambda amount: \
 267             int(decimal.Decimal(unicode(amount)) * 100000000)
 268
 269         amount = convert_amount(amount)
 270
 271         if self.wallet.use_encryption:
 272             password = self.password_dialog()
 273             if not password:
 274                 return
 275         else:
 276             password = None
 277
 278         try:
 279             tx = self.wallet.mktx(dest_address, amount, "", password, fee)
 280         except BaseException, e:
 281             self.show_message(str(e))
 282             return
 283
 284         status, msg = self.wallet.sendtx( tx )
 285         if status:
 286             QMessageBox.information(self, '', _('Payment sent.')+'\n'+msg, _('OK'))
 287             self.do_clear()
 288             self.update_contacts_tab()
 289         else:
 290             QMessageBox.warning(self, _('Error'), msg, _('OK'))
 291
 292     def is_valid(self, address):
 293         return self.wallet.is_valid(address)
 294
 295 class MiniDriver(QObject):
 296
 297     INITIALIZING = 0
 298     CONNECTING = 1
 299     SYNCHRONIZING = 2
 300     READY = 3
 301
 302     def __init__(self, wallet, window):
 303         super(QObject, self).__init__()
 304
 305         self.wallet = wallet
 306         self.window = window
 307
 308         self.wallet.register_callback(self.update_callback)
 309
 310         self.state = None
 311
 312         self.initializing()
 313         self.connect(self, SIGNAL("updatesignal()"), self.update)
 314
 315     # This is a hack to workaround that Qt does not like changing the
 316     # window properties from this other thread before the runloop has
 317     # been called from.
 318     def update_callback(self):
 319         self.emit(SIGNAL("updatesignal()"))
 320
 321     def update(self):
 322         if not self.wallet.interface:
 323             self.initializing()
 324         elif not self.wallet.interface.is_connected:
 325             self.connecting()
 326         elif not self.wallet.blocks == -1:
 327             self.connecting()
 328         elif not self.wallet.is_up_to_date:
 329             self.synchronizing()
 330         else:
 331             self.ready()
 332
 333         if self.wallet.up_to_date:
 334             self.update_balance()
 335
 336     def initializing(self):
 337         if self.state == self.INITIALIZING:
 338             return
 339         self.state = self.INITIALIZING
 340         self.window.deactivate()
 341
 342     def connecting(self):
 343         if self.state == self.CONNECTING:
 344             return
 345         self.state = self.CONNECTING
 346         self.window.deactivate()
 347
 348     def synchronizing(self):
 349         if self.state == self.SYNCHRONIZING:
 350             return
 351         self.state = self.SYNCHRONIZING
 352         self.window.deactivate()
 353
 354     def ready(self):
 355         if self.state == self.READY:
 356             return
 357         self.state = self.READY
 358         self.window.activate()
 359
 360     def update_balance(self):
 361         conf_balance, unconf_balance = self.wallet.get_balance()
 362         balance = conf_balance if unconf_balance is None else unconf_balance
 363         self.window.set_balances(balance, balance * 6, 'EUR')
 364
 365 if __name__ == "__main__":
 366     app = QApplication(sys.argv)
 367     with open("data/style.css") as style_file:
 368         app.setStyleSheet(style_file.read())
 369     mini = MiniWindow()
 370     sys.exit(app.exec_())
 371