gui/qt/lite_window.py

   1 import sys
   2
   3 # Let's do some dep checking and handle missing ones gracefully
   4 try:
   5     from PyQt4.QtCore import *
   6     from PyQt4.QtGui import *
   7     from PyQt4.Qt import Qt
   8     import PyQt4.QtCore as QtCore
   9
  10 except ImportError:
  11     print "You need to have PyQT installed to run Electrum in graphical mode."
  12     print "If you have pip installed try 'sudo pip install pyqt' if you are on Debian/Ubuntu try 'sudo apt-get install python-qt4'."
  13     sys.exit(0)
  14
  15 from decimal import Decimal as D
  16 from electrum.util import get_resource_path as rsrc
  17 from electrum.bitcoin import is_valid
  18 from electrum.i18n import _
  19 import decimal
  20 import json
  21 import os.path
  22 import random
  23 import re
  24 import time
  25 from electrum.wallet import Wallet, WalletStorage
  26 import webbrowser
  27 import history_widget
  28 import receiving_widget
  29 from electrum import util
  30 import csv
  31 import datetime
  32
  33 from electrum.version import ELECTRUM_VERSION as electrum_version
  34 from electrum.util import format_satoshis, age
  35
  36 from main_window import ElectrumWindow
  37 import shutil
  38
  39 from util import *
  40
  41 bitcoin = lambda v: v * 100000000
  42
  43 def IconButton(filename, parent=None):
  44     pixmap = QPixmap(filename)
  45     icon = QIcon(pixmap)
  46     return QPushButton(icon, "", parent)
  47
  48 class Timer(QThread):
  49     def run(self):
  50         while True:
  51             self.emit(SIGNAL('timersignal'))
  52             time.sleep(0.5)
  53
  54 def resize_line_edit_width(line_edit, text_input):
  55     metrics = QFontMetrics(qApp.font())
  56     # Create an extra character to add some space on the end
  57     text_input += "A"
  58     line_edit.setMinimumWidth(metrics.width(text_input))
  59
  60 def load_theme_name(theme_path):
  61     try:
  62         with open(os.path.join(theme_path, "name.cfg")) as name_cfg_file:
  63             return name_cfg_file.read().rstrip("\n").strip()
  64     except IOError:
  65         return None
  66
  67
  68 def theme_dirs_from_prefix(prefix):
  69     if not os.path.exists(prefix):
  70         return []
  71     theme_paths = {}
  72     for potential_theme in os.listdir(prefix):
  73         theme_full_path = os.path.join(prefix, potential_theme)
  74         theme_css = os.path.join(theme_full_path, "style.css")
  75         if not os.path.exists(theme_css):
  76             continue
  77         theme_name = load_theme_name(theme_full_path)
  78         if theme_name is None:
  79             continue
  80         theme_paths[theme_name] = prefix, potential_theme
  81     return theme_paths
  82
  83 def load_theme_paths():
  84     theme_paths = {}
  85     prefixes = (util.local_data_dir(), util.appdata_dir())
  86     for prefix in prefixes:
  87         theme_paths.update(theme_dirs_from_prefix(prefix))
  88     return theme_paths
  89
  90
  91 def csv_transaction(wallet):
  92     try:
  93         select_export = _('Select file to export your wallet transactions to')
  94         fileName = QFileDialog.getSaveFileName(QWidget(), select_export, os.path.expanduser('~/electrum-history.csv'), "*.csv")
  95         if fileName:
  96             with open(fileName, "w+") as csvfile:
  97                 transaction = csv.writer(csvfile)
  98                 transaction.writerow(["transaction_hash","label", "confirmations", "value", "fee", "balance", "timestamp"])
  99                 for item in wallet.get_tx_history():
 100                     tx_hash, confirmations, is_mine, value, fee, balance, timestamp = item
 101                     if confirmations:
 102                         if timestamp is not None:
 103                             try:
 104                                 time_string = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
 105                             except [RuntimeError, TypeError, NameError] as reason:
 106                                 time_string = "unknown"
 107                                 pass
 108                         else:
 109                           time_string = "unknown"
 110                     else:
 111                         time_string = "pending"
 112
 113                     if value is not None:
 114                         value_string = format_satoshis(value, True)
 115                     else:
 116                         value_string = '--'
 117
 118                     if fee is not None:
 119                         fee_string = format_satoshis(fee, True)
 120                     else:
 121                         fee_string = '0'
 122
 123                     if tx_hash:
 124                         label, is_default_label = wallet.get_label(tx_hash)
 125                         label = label.encode('utf-8')
 126                     else:
 127                       label = ""
 128
 129                     balance_string = format_satoshis(balance, False)
 130                     transaction.writerow([tx_hash, label, confirmations, value_string, fee_string, balance_string, time_string])
 131                 QMessageBox.information(None,_("CSV Export created"), _("Your CSV export has been successfully created."))
 132     except (IOError, os.error), reason:
 133         export_error_label = _("Electrum was unable to produce a transaction export.")
 134         QMessageBox.critical(None,_("Unable to create csv"), export_error_label + "\n" + str(reason))
 135
 136
 137
 138 class TransactionWindow(QDialog):
 139
 140     def set_label(self):
 141         label = unicode(self.label_edit.text())
 142         self.parent.wallet.labels[self.tx_id] = label
 143
 144         super(TransactionWindow, self).accept()
 145
 146     def __init__(self, transaction_id, parent):
 147         super(TransactionWindow, self).__init__()
 148
 149         self.tx_id = str(transaction_id)
 150         self.parent = parent
 151
 152         self.setModal(True)
 153         self.resize(200,100)
 154         self.setWindowTitle(_("Transaction successfully sent"))
 155
 156         self.layout = QGridLayout(self)
 157         history_label = "%s\n%s" % (_("Your transaction has been sent."), _("Please enter a label for this transaction for future reference."))
 158         self.layout.addWidget(QLabel(history_label))
 159
 160         self.label_edit = QLineEdit()
 161         self.label_edit.setPlaceholderText(_("Transaction label"))
 162         self.label_edit.setObjectName("label_input")
 163         self.label_edit.setAttribute(Qt.WA_MacShowFocusRect, 0)
 164         self.label_edit.setFocusPolicy(Qt.ClickFocus)
 165         self.layout.addWidget(self.label_edit)
 166
 167         self.save_button = QPushButton(_("Save"))
 168         self.layout.addWidget(self.save_button)
 169         self.save_button.clicked.connect(self.set_label)
 170
 171         self.exec_()
 172
 173 class MiniWindow(QDialog):
 174
 175     def __init__(self, actuator, expand_callback, config):
 176         super(MiniWindow, self).__init__()
 177
 178         self.actuator = actuator
 179         self.config = config
 180         self.btc_balance = None
 181         self.use_exchanges = ["Blockchain", "CoinDesk"]
 182         self.quote_currencies = ["BRL", "CNY", "EUR", "GBP", "RUB", "USD"]
 183         self.actuator.set_configured_currency(self.set_quote_currency)
 184         self.actuator.set_configured_exchange(self.set_exchange)
 185
 186         # Needed because price discovery is done in a different thread
 187         # which needs to be sent back to this main one to update the GUI
 188         self.connect(self, SIGNAL("refresh_balance()"), self.refresh_balance)
 189
 190         self.balance_label = BalanceLabel(self.change_quote_currency, self)
 191         self.balance_label.setObjectName("balance_label")
 192
 193
 194         # Bitcoin address code
 195         self.address_input = QLineEdit()
 196         self.address_input.setPlaceholderText(_("Enter a Bitcoin address or contact"))
 197         self.address_input.setObjectName("address_input")
 198
 199         self.address_input.setFocusPolicy(Qt.ClickFocus)
 200
 201         self.address_input.textChanged.connect(self.address_field_changed)
 202         resize_line_edit_width(self.address_input,
 203                                "1BtaFUr3qVvAmwrsuDuu5zk6e4s2rxd2Gy")
 204
 205         self.address_completions = QStringListModel()
 206         address_completer = QCompleter(self.address_input)
 207         address_completer.setCaseSensitivity(False)
 208         address_completer.setModel(self.address_completions)
 209         self.address_input.setCompleter(address_completer)
 210
 211         address_layout = QHBoxLayout()
 212         address_layout.addWidget(self.address_input)
 213
 214         self.amount_input = QLineEdit()
 215         self.amount_input.setPlaceholderText(_("... and amount") + " (%s)"%self.actuator.g.base_unit())
 216         self.amount_input.setObjectName("amount_input")
 217
 218         self.amount_input.setFocusPolicy(Qt.ClickFocus)
 219         # This is changed according to the user's displayed balance
 220         self.amount_validator = QDoubleValidator(self.amount_input)
 221         self.amount_validator.setNotation(QDoubleValidator.StandardNotation)
 222         self.amount_validator.setDecimals(8)
 223         self.amount_input.setValidator(self.amount_validator)
 224
 225         # This removes the very ugly OSX highlighting, please leave this in :D
 226         self.address_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 227         self.amount_input.setAttribute(Qt.WA_MacShowFocusRect, 0)
 228         self.amount_input.textChanged.connect(self.amount_input_changed)
 229
 230         #if self.actuator.g.wallet.seed:
 231         self.send_button = QPushButton(_("&Send"))
 232         #else:
 233         #    self.send_button = QPushButton(_("&Create"))
 234
 235         self.send_button.setObjectName("send_button")
 236         self.send_button.setDisabled(True);
 237         self.send_button.clicked.connect(self.send)
 238
 239         # Creating the receive button
 240         self.switch_button = QPushButton( QIcon(":icons/switchgui.png"),'' )
 241         self.switch_button.setMaximumWidth(25)
 242         self.switch_button.setFlat(True)
 243         self.switch_button.clicked.connect(expand_callback)
 244
 245         main_layout = QGridLayout(self)
 246
 247         main_layout.addWidget(self.balance_label, 0, 0, 1, 3)
 248         main_layout.addWidget(self.switch_button, 0, 3)
 249
 250         main_layout.addWidget(self.address_input, 1, 0, 1, 4)
 251         main_layout.addWidget(self.amount_input, 2, 0, 1, 2)
 252         main_layout.addWidget(self.send_button, 2, 2, 1, 2)
 253
 254         self.send_button.setMaximumWidth(125)
 255
 256         self.history_list = history_widget.HistoryWidget()
 257         self.history_list.setObjectName("history")
 258         self.history_list.hide()
 259         self.history_list.setAlternatingRowColors(True)
 260
 261         main_layout.addWidget(self.history_list, 3, 0, 1, 4)
 262
 263         self.receiving = receiving_widget.ReceivingWidget(self)
 264         self.receiving.setObjectName("receiving")
 265
 266         # Add to the right side
 267         self.receiving_box = QGroupBox(_("Select a receiving address"))
 268         extra_layout = QGridLayout()
 269
 270         # Checkbox to filter used addresses
 271         hide_used = QCheckBox(_('Hide used addresses'))
 272         hide_used.setChecked(True)
 273         hide_used.stateChanged.connect(self.receiving.toggle_used)
 274
 275         # Events for receiving addresses
 276         self.receiving.clicked.connect(self.receiving.copy_address)
 277         self.receiving.itemDoubleClicked.connect(self.receiving.edit_label)
 278         self.receiving.itemChanged.connect(self.receiving.update_label)
 279
 280
 281         # Label
 282         extra_layout.addWidget( QLabel(_('Selecting an address will copy it to the clipboard.') + '\n' + _('Double clicking the label will allow you to edit it.') ),0,0)
 283
 284         extra_layout.addWidget(self.receiving, 1,0)
 285         extra_layout.addWidget(hide_used, 2,0)
 286         extra_layout.setColumnMinimumWidth(0,200)
 287
 288         self.receiving_box.setLayout(extra_layout)
 289         main_layout.addWidget(self.receiving_box,0,4,-1,3)
 290         self.receiving_box.hide()
 291
 292         self.main_layout = main_layout
 293
 294         quit_shortcut = QShortcut(QKeySequence("Ctrl+Q"), self)
 295         quit_shortcut.activated.connect(self.close)
 296         close_shortcut = QShortcut(QKeySequence("Ctrl+W"), self)
 297         close_shortcut.activated.connect(self.close)
 298
 299         g = self.config.get("winpos-lite",[4, 25, 351, 149])
 300         self.setGeometry(g[0], g[1], g[2], g[3])
 301
 302         show_hist = self.config.get("gui_show_history",False)
 303         self.show_history(show_hist)
 304         show_hist = self.config.get("gui_show_receiving",False)
 305         self.toggle_receiving_layout(show_hist)
 306
 307         self.setWindowIcon(QIcon(":icons/electrum.png"))
 308         self.setWindowTitle("Electrum")
 309         self.setWindowFlags(Qt.Window|Qt.MSWindowsFixedSizeDialogHint)
 310         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 311         self.setObjectName("main_window")
 312
 313
 314     def context_menu(self):
 315         view_menu = QMenu()
 316         themes_menu = view_menu.addMenu(_("&Themes"))
 317         selected_theme = self.actuator.selected_theme()
 318         theme_group = QActionGroup(self)
 319         for theme_name in self.actuator.theme_names():
 320             theme_action = themes_menu.addAction(theme_name)
 321             theme_action.setCheckable(True)
 322             if selected_theme == theme_name:
 323                 theme_action.setChecked(True)
 324             class SelectThemeFunctor:
 325                 def __init__(self, theme_name, toggle_theme):
 326                     self.theme_name = theme_name
 327                     self.toggle_theme = toggle_theme
 328                 def __call__(self, checked):
 329                     if checked:
 330                         self.toggle_theme(self.theme_name)
 331             delegate = SelectThemeFunctor(theme_name, self.toggle_theme)
 332             theme_action.toggled.connect(delegate)
 333             theme_group.addAction(theme_action)
 334         view_menu.addSeparator()
 335
 336         show_receiving = view_menu.addAction(_("Show Receiving addresses"))
 337         show_receiving.setCheckable(True)
 338         show_receiving.toggled.connect(self.toggle_receiving_layout)
 339         show_receiving.setChecked(self.config.get("gui_show_receiving",False))
 340
 341         show_history = view_menu.addAction(_("Show History"))
 342         show_history.setCheckable(True)
 343         show_history.toggled.connect(self.show_history)
 344         show_history.setChecked(self.config.get("gui_show_history",False))
 345
 346         return view_menu
 347
 348
 349
 350     def toggle_theme(self, theme_name):
 351         self.actuator.change_theme(theme_name)
 352         # Recompute style globally
 353         qApp.style().unpolish(self)
 354         qApp.style().polish(self)
 355
 356     def closeEvent(self, event):
 357         g = self.geometry()
 358         self.config.set_key("winpos-lite", [g.left(),g.top(),g.width(),g.height()],True)
 359         self.actuator.g.closeEvent(event)
 360         qApp.quit()
 361
 362     def set_payment_fields(self, dest_address, amount):
 363         self.address_input.setText(dest_address)
 364         self.address_field_changed(dest_address)
 365         self.amount_input.setText(amount)
 366
 367     def activate(self):
 368         pass
 369
 370     def deactivate(self):
 371         pass
 372
 373     def set_exchange(self, use_exchange):
 374         if use_exchange not in self.use_exchanges:
 375             return
 376         self.use_exchanges.remove(use_exchange)
 377         self.use_exchanges.insert(0, use_exchange)
 378         self.refresh_balance()
 379
 380     def set_quote_currency(self, currency):
 381         """Set and display the fiat currency country."""
 382         if currency not in self.quote_currencies:
 383             return
 384         self.quote_currencies.remove(currency)
 385         self.quote_currencies.insert(0, currency)
 386         self.refresh_balance()
 387
 388     def change_quote_currency(self, forward=True):
 389         if forward:
 390             self.quote_currencies = \
 391                 self.quote_currencies[1:] + self.quote_currencies[0:1]
 392         else:
 393             self.quote_currencies = \
 394                 self.quote_currencies[-1:] + self.quote_currencies[0:-1]
 395         self.actuator.set_config_currency(self.quote_currencies[0])
 396         self.refresh_balance()
 397
 398     def refresh_balance(self):
 399         if self.btc_balance is None:
 400             # Price has been discovered before wallet has been loaded
 401             # and server connect... so bail.
 402             return
 403         self.set_balances(self.btc_balance)
 404         self.amount_input_changed(self.amount_input.text())
 405
 406     def set_balances(self, btc_balance):
 407         """Set the bitcoin balance and update the amount label accordingly."""
 408         self.btc_balance = btc_balance
 409         quote_text = self.create_quote_text(btc_balance)
 410         if quote_text:
 411             quote_text = "(%s)" % quote_text
 412
 413         amount = self.actuator.g.format_amount(btc_balance)
 414         unit = self.actuator.g.base_unit()
 415
 416         self.balance_label.set_balance_text(amount, unit, quote_text)
 417         self.setWindowTitle("Electrum %s - %s %s" % (electrum_version, amount, unit))
 418
 419     def amount_input_changed(self, amount_text):
 420         """Update the number of bitcoins displayed."""
 421         self.check_button_status()
 422
 423         try:
 424             amount = D(str(amount_text)) * (10**self.actuator.g.decimal_point)
 425         except decimal.InvalidOperation:
 426             self.balance_label.show_balance()
 427         else:
 428             quote_text = self.create_quote_text(amount)
 429             if quote_text:
 430                 self.balance_label.set_amount_text(quote_text)
 431                 self.balance_label.show_amount()
 432             else:
 433                 self.balance_label.show_balance()
 434
 435     def create_quote_text(self, btc_balance):
 436         """Return a string copy of the amount fiat currency the
 437         user has in bitcoins."""
 438         from electrum.plugins import run_hook
 439         r = {}
 440         run_hook('set_quote_text', btc_balance, r)
 441         return r.get(0,'')
 442
 443     def send(self):
 444         if self.actuator.send(self.address_input.text(),
 445                               self.amount_input.text(), self):
 446             self.address_input.setText("")
 447             self.amount_input.setText("")
 448
 449     def check_button_status(self):
 450         """Check that the bitcoin address is valid and that something
 451         is entered in the amount before making the send button clickable."""
 452         try:
 453             value = D(str(self.amount_input.text())) * (10**self.actuator.g.decimal_point)
 454         except decimal.InvalidOperation:
 455             value = None
 456         # self.address_input.property(...) returns a qVariant, not a bool.
 457         # The == is needed to properly invoke a comparison.
 458         if (self.address_input.property("isValid") == True and
 459             value is not None and 0 < value <= self.btc_balance):
 460             self.send_button.setDisabled(False)
 461         else:
 462             self.send_button.setDisabled(True)
 463
 464     def address_field_changed(self, address):
 465         # label or alias, with address in brackets
 466         match2 = re.match("(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>",
 467                           address)
 468         if match2:
 469           address = match2.group(2)
 470           self.address_input.setText(address)
 471
 472         if is_valid(address):
 473             self.check_button_status()
 474             self.address_input.setProperty("isValid", True)
 475             self.recompute_style(self.address_input)
 476         else:
 477             self.send_button.setDisabled(True)
 478             self.address_input.setProperty("isValid", False)
 479             self.recompute_style(self.address_input)
 480
 481         if len(address) == 0:
 482             self.address_input.setProperty("isValid", None)
 483             self.recompute_style(self.address_input)
 484
 485     def recompute_style(self, element):
 486         self.style().unpolish(element)
 487         self.style().polish(element)
 488
 489     def copy_address(self):
 490         receive_popup = ReceivePopup(self.receive_button)
 491         self.actuator.copy_address(receive_popup)
 492
 493     def update_completions(self, completions):
 494         self.address_completions.setStringList(completions)
 495
 496
 497     def update_history(self, tx_history):
 498
 499         self.history_list.empty()
 500
 501         for item in tx_history[-10:]:
 502             tx_hash, conf, is_mine, value, fee, balance, timestamp = item
 503             label = self.actuator.g.wallet.get_label(tx_hash)[0]
 504             v_str = self.actuator.g.format_amount(value, True)
 505             self.history_list.append(label, v_str, age(timestamp))
 506
 507
 508     def the_website(self):
 509         webbrowser.open("http://electrum.org")
 510
 511
 512     def toggle_receiving_layout(self, toggle_state):
 513         if toggle_state:
 514             self.receiving_box.show()
 515         else:
 516             self.receiving_box.hide()
 517         self.config.set_key("gui_show_receiving", toggle_state)
 518
 519     def show_history(self, toggle_state):
 520         if toggle_state:
 521             self.main_layout.setRowMinimumHeight(3,200)
 522             self.history_list.show()
 523         else:
 524             self.main_layout.setRowMinimumHeight(3,0)
 525             self.history_list.hide()
 526         self.config.set_key("gui_show_history", toggle_state)
 527
 528 class BalanceLabel(QLabel):
 529
 530     SHOW_CONNECTING = 1
 531     SHOW_BALANCE = 2
 532     SHOW_AMOUNT = 3
 533
 534     def __init__(self, change_quote_currency, parent=None):
 535         super(QLabel, self).__init__(_("Connecting..."), parent)
 536         self.change_quote_currency = change_quote_currency
 537         self.state = self.SHOW_CONNECTING
 538         self.balance_text = ""
 539         self.amount_text = ""
 540         self.parent = parent
 541
 542     def mousePressEvent(self, event):
 543         """Change the fiat currency selection if window background is clicked."""
 544         if self.state != self.SHOW_CONNECTING:
 545             if event.button() == Qt.LeftButton:
 546                 self.change_quote_currency()
 547             else:
 548                 position = event.globalPos()
 549                 menu = self.parent.context_menu()
 550                 menu.exec_(position)
 551
 552
 553     def set_balance_text(self, amount, unit, quote_text):
 554         """Set the amount of bitcoins in the gui."""
 555         if self.state == self.SHOW_CONNECTING:
 556             self.state = self.SHOW_BALANCE
 557
 558         self.balance_text = "<span style='font-size: 18pt'>%s</span>"%amount\
 559             + " <span style='font-size: 10pt'>%s</span>" % unit \
 560             + " <span style='font-size: 10pt'>%s</span>" % quote_text
 561
 562         if self.state == self.SHOW_BALANCE:
 563             self.setText(self.balance_text)
 564
 565     def set_amount_text(self, quote_text):
 566         self.amount_text = "<span style='font-size: 10pt'>%s</span>" % quote_text
 567         if self.state == self.SHOW_AMOUNT:
 568             self.setText(self.amount_text)
 569
 570     def show_balance(self):
 571         if self.state == self.SHOW_AMOUNT:
 572             self.state = self.SHOW_BALANCE
 573             self.setText(self.balance_text)
 574
 575     def show_amount(self):
 576         if self.state == self.SHOW_BALANCE:
 577             self.state = self.SHOW_AMOUNT
 578             self.setText(self.amount_text)
 579
 580 def ok_cancel_buttons(dialog):
 581     row_layout = QHBoxLayout()
 582     row_layout.addStretch(1)
 583     ok_button = QPushButton(_("OK"))
 584     row_layout.addWidget(ok_button)
 585     ok_button.clicked.connect(dialog.accept)
 586     cancel_button = QPushButton(_("Cancel"))
 587     row_layout.addWidget(cancel_button)
 588     cancel_button.clicked.connect(dialog.reject)
 589     return row_layout
 590
 591 class PasswordDialog(QDialog):
 592
 593     def __init__(self, parent):
 594         super(QDialog, self).__init__(parent)
 595
 596         self.setModal(True)
 597
 598         self.password_input = QLineEdit()
 599         self.password_input.setEchoMode(QLineEdit.Password)
 600
 601         main_layout = QVBoxLayout(self)
 602         message = _('Please enter your password')
 603         main_layout.addWidget(QLabel(message))
 604
 605         grid = QGridLayout()
 606         grid.setSpacing(8)
 607         grid.addWidget(QLabel(_('Password')), 1, 0)
 608         grid.addWidget(self.password_input, 1, 1)
 609         main_layout.addLayout(grid)
 610
 611         main_layout.addLayout(ok_cancel_buttons(self))
 612         self.setLayout(main_layout)
 613
 614     def run(self):
 615         if not self.exec_():
 616             return
 617         return unicode(self.password_input.text())
 618
 619 class ReceivePopup(QDialog):
 620
 621     def leaveEvent(self, event):
 622         self.close()
 623
 624     def setup(self, address):
 625         label = QLabel(_("Copied your Bitcoin address to the clipboard!"))
 626         address_display = QLineEdit(address)
 627         address_display.setReadOnly(True)
 628         resize_line_edit_width(address_display, address)
 629
 630         main_layout = QVBoxLayout(self)
 631         main_layout.addWidget(label)
 632         main_layout.addWidget(address_display)
 633
 634         self.setMouseTracking(True)
 635         self.setWindowTitle("Electrum - " + _("Receive Bitcoin payment"))
 636         self.setWindowFlags(Qt.Window|Qt.FramelessWindowHint|
 637                             Qt.MSWindowsFixedSizeDialogHint)
 638         self.layout().setSizeConstraint(QLayout.SetFixedSize)
 639         #self.setFrameStyle(QFrame.WinPanel|QFrame.Raised)
 640         #self.setAlignment(Qt.AlignCenter)
 641
 642     def popup(self):
 643         parent = self.parent()
 644         top_left_pos = parent.mapToGlobal(parent.rect().bottomLeft())
 645         self.move(top_left_pos)
 646         center_mouse_pos = self.mapToGlobal(self.rect().center())
 647         QCursor.setPos(center_mouse_pos)
 648         self.show()
 649
 650 class MiniActuator:
 651     """Initialize the definitions relating to themes and
 652     sending/receiving bitcoins."""
 653
 654
 655     def __init__(self, main_window):
 656         """Retrieve the gui theme used in previous session."""
 657         self.g = main_window
 658         self.theme_name = self.g.config.get('litegui_theme','Cleanlook')
 659         self.themes = load_theme_paths()
 660         self.load_theme()
 661
 662     def load_theme(self):
 663         """Load theme retrieved from wallet file."""
 664         try:
 665             theme_prefix, theme_path = self.themes[self.theme_name]
 666         except KeyError:
 667             util.print_error("Theme not found!", self.theme_name)
 668             return
 669         full_theme_path = "%s/%s/style.css" % (theme_prefix, theme_path)
 670         with open(full_theme_path) as style_file:
 671             qApp.setStyleSheet(style_file.read())
 672
 673     def theme_names(self):
 674         """Sort themes."""
 675         return sorted(self.themes.keys())
 676
 677     def selected_theme(self):
 678         """Select theme."""
 679         return self.theme_name
 680
 681     def change_theme(self, theme_name):
 682         """Change theme."""
 683         self.theme_name = theme_name
 684         self.g.config.set_key('litegui_theme',theme_name)
 685         self.load_theme()
 686
 687     def set_configured_exchange(self, set_exchange):
 688         use_exchange = self.g.config.get('use_exchange')
 689         if use_exchange is not None:
 690             set_exchange(use_exchange)
 691
 692     def set_configured_currency(self, set_quote_currency):
 693         """Set the inital fiat currency conversion country (USD/EUR/GBP) in
 694         the GUI to what it was set to in the wallet."""
 695         currency = self.g.config.get('currency')
 696         # currency can be none when Electrum is used for the first
 697         # time and no setting has been created yet.
 698         if currency is not None:
 699             set_quote_currency(currency)
 700
 701     def set_config_exchange(self, conversion_exchange):
 702         self.g.config.set_key('exchange',conversion_exchange,True)
 703         self.g.update_status()
 704
 705     def set_config_currency(self, conversion_currency):
 706         """Change the wallet fiat currency country."""
 707         self.g.config.set_key('currency',conversion_currency,True)
 708         self.g.update_status()
 709
 710     def copy_address(self, receive_popup):
 711         """Copy the wallet addresses into the client."""
 712         addrs = [addr for addr in self.g.wallet.addresses(True)
 713                  if not self.g.wallet.is_change(addr)]
 714         # Select most recent addresses from gap limit
 715         addrs = addrs[-self.g.wallet.gap_limit:]
 716         copied_address = random.choice(addrs)
 717         qApp.clipboard().setText(copied_address)
 718         receive_popup.setup(copied_address)
 719         receive_popup.popup()
 720
 721     def waiting_dialog(self, f):
 722         s = Timer()
 723         s.start()
 724         w = QDialog()
 725         w.resize(200, 70)
 726         w.setWindowTitle('Electrum')
 727         l = QLabel(_('Sending transaction, please wait.'))
 728         vbox = QVBoxLayout()
 729         vbox.addWidget(l)
 730         w.setLayout(vbox)
 731         w.show()
 732         def ff():
 733             s = f()
 734             if s: l.setText(s)
 735             else: w.close()
 736         w.connect(s, QtCore.SIGNAL('timersignal'), ff)
 737         w.exec_()
 738         w.destroy()
 739
 740
 741     def send(self, address, amount, parent_window):
 742         """Send bitcoins to the target address."""
 743         dest_address = self.fetch_destination(address)
 744
 745         if dest_address is None or not is_valid(dest_address):
 746             QMessageBox.warning(parent_window, _('Error'),
 747                 _('Invalid Bitcoin Address') + ':\n' + address, _('OK'))
 748             return False
 749
 750         amount = D(unicode(amount)) * (10*self.g.decimal_point)
 751         print "amount", amount
 752         return
 753
 754         if self.g.wallet.use_encryption:
 755             password_dialog = PasswordDialog(parent_window)
 756             password = password_dialog.run()
 757             if not password:
 758                 return
 759         else:
 760             password = None
 761
 762         fee = 0
 763         # 0.1 BTC = 10000000
 764         if amount < bitcoin(1) / 10:
 765             # 0.001 BTC
 766             fee = bitcoin(1) / 1000
 767
 768         try:
 769             tx = self.g.wallet.mktx([(dest_address, amount)], password, fee)
 770         except Exception as error:
 771             QMessageBox.warning(parent_window, _('Error'), str(error), _('OK'))
 772             return False
 773
 774         if tx.is_complete:
 775             h = self.g.wallet.send_tx(tx)
 776
 777             self.waiting_dialog(lambda: False if self.g.wallet.tx_event.isSet() else _("Sending transaction, please wait..."))
 778
 779             status, message = self.g.wallet.receive_tx(h, tx)
 780
 781             if not status:
 782                 import tempfile
 783                 dumpf = tempfile.NamedTemporaryFile(delete=False)
 784                 dumpf.write(tx)
 785                 dumpf.close()
 786                 print "Dumped error tx to", dumpf.name
 787                 QMessageBox.warning(parent_window, _('Error'), message, _('OK'))
 788                 return False
 789
 790             TransactionWindow(message, self)
 791         else:
 792             filename = 'unsigned_tx_%s' % (time.mktime(time.gmtime()))
 793             try:
 794                 fileName = QFileDialog.getSaveFileName(QWidget(), _("Select a transaction filename"), os.path.expanduser('~/%s' % (filename)))
 795                 with open(fileName,'w') as f:
 796                     f.write(json.dumps(tx.as_dict(),indent=4) + '\n')
 797                 QMessageBox.information(QWidget(), _('Unsigned transaction created'), _("Unsigned transaction was saved to file:") + " " +fileName, _('OK'))
 798             except Exception as e:
 799                 QMessageBox.warning(QWidget(), _('Error'), _('Could not write transaction to file: %s' % e), _('OK'))
 800         return True
 801
 802     def fetch_destination(self, address):
 803         recipient = unicode(address).strip()
 804
 805         # alias
 806         match1 = re.match("^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$",
 807                           recipient)
 808
 809         # label or alias, with address in brackets
 810         match2 = re.match("(.*?)\s*\<([1-9A-HJ-NP-Za-km-z]{26,})\>",
 811                           recipient)
 812
 813         if match1:
 814             dest_address = \
 815                 self.g.wallet.get_alias(recipient, True,
 816                                       self.show_message, self.question)
 817             return dest_address
 818         elif match2:
 819             return match2.group(2)
 820         else:
 821             return recipient
 822
 823
 824
 825
 826
 827 class MiniDriver(QObject):
 828
 829     INITIALIZING = 0
 830     CONNECTING = 1
 831     SYNCHRONIZING = 2
 832     READY = 3
 833
 834     def __init__(self, main_window, mini_window):
 835         super(QObject, self).__init__()
 836
 837         self.g = main_window
 838         self.network = main_window.network
 839         self.window = mini_window
 840
 841         if self.network:
 842             self.network.register_callback('updated',self.update_callback)
 843             self.network.register_callback('connected', self.update_callback)
 844             self.network.register_callback('disconnected', self.update_callback)
 845
 846         self.state = None
 847
 848         self.initializing()
 849         self.connect(self, SIGNAL("updatesignal()"), self.update)
 850         self.update_callback()
 851
 852     # This is a hack to workaround that Qt does not like changing the
 853     # window properties from this other thread before the runloop has
 854     # been called from.
 855     def update_callback(self):
 856         self.emit(SIGNAL("updatesignal()"))
 857
 858     def update(self):
 859         if not self.network:
 860             self.initializing()
 861         elif not self.network.interface:
 862             self.initializing()
 863         elif not self.network.interface.is_connected:
 864             self.connecting()
 865
 866         if self.g.wallet is None:
 867             self.ready()
 868         elif not self.g.wallet.up_to_date:
 869             self.synchronizing()
 870         else:
 871             self.ready()
 872             self.update_balance()
 873             self.update_completions()
 874             self.update_history()
 875             self.window.receiving.update_list()
 876
 877
 878     def initializing(self):
 879         if self.state == self.INITIALIZING:
 880             return
 881         self.state = self.INITIALIZING
 882         self.window.deactivate()
 883
 884     def connecting(self):
 885         if self.state == self.CONNECTING:
 886             return
 887         self.state = self.CONNECTING
 888         self.window.deactivate()
 889
 890     def synchronizing(self):
 891         if self.state == self.SYNCHRONIZING:
 892             return
 893         self.state = self.SYNCHRONIZING
 894         self.window.deactivate()
 895
 896     def ready(self):
 897         if self.state == self.READY:
 898             return
 899         self.state = self.READY
 900         self.window.activate()
 901
 902     def update_balance(self):
 903         conf_balance, unconf_balance = self.g.wallet.get_balance()
 904         balance = D(conf_balance + unconf_balance)
 905         self.window.set_balances(balance)
 906
 907     def update_completions(self):
 908         completions = []
 909         for addr, label in self.g.wallet.labels.items():
 910             if addr in self.g.wallet.addressbook:
 911                 completions.append("%s <%s>" % (label, addr))
 912         self.window.update_completions(completions)
 913
 914     def update_history(self):
 915         tx_history = self.g.wallet.get_tx_history()
 916         self.window.update_history(tx_history)
 917
 918
 919 if __name__ == "__main__":
 920     app = QApplication(sys.argv)
 921     with open(rsrc("style.css")) as style_file:
 922         app.setStyleSheet(style_file.read())
 923     mini = MiniWindow()
 924     sys.exit(app.exec_())
 925