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