gui/gui_classic/qt_util.py

   1 from electrum.i18n import _
   2 from PyQt4.QtGui import *
   3 from PyQt4.QtCore import *
   4 import os.path
   5 import time
   6
   7
   8 class Timer(QThread):
   9     def run(self):
  10         while True:
  11             self.emit(SIGNAL('timersignal'))
  12             time.sleep(0.5)
  13
  14
  15 class EnterButton(QPushButton):
  16     def __init__(self, text, func):
  17         QPushButton.__init__(self, text)
  18         self.func = func
  19         self.clicked.connect(func)
  20
  21     def keyPressEvent(self, e):
  22         if e.key() == Qt.Key_Return:
  23             apply(self.func,())
  24
  25
  26 def waiting_dialog(f, w=None):
  27
  28     s = Timer()
  29     s.start()
  30     if not w:
  31         w = QDialog()
  32         w.resize(200, 70)
  33         w.setWindowTitle('Electrum')
  34     else:
  35         if w.layout(): QWidget().setLayout(w.layout())
  36
  37     l = QLabel('')
  38     vbox = QVBoxLayout(w)
  39     vbox.addWidget(l)
  40     w.show()
  41     def ff():
  42         s = f()
  43         if s: l.setText(s)
  44         else: w.accept()
  45     w.connect(s, SIGNAL('timersignal'), ff)
  46     w.exec_()
  47     #w.destroy()
  48
  49
  50 class HelpButton(QPushButton):
  51     def __init__(self, text):
  52         QPushButton.__init__(self, '?')
  53         self.setFocusPolicy(Qt.NoFocus)
  54         self.setFixedWidth(20)
  55         self.clicked.connect(lambda: QMessageBox.information(self, 'Help', text, 'OK') )
  56
  57
  58
  59 def backup_wallet(path):
  60     import shutil
  61     directory, fileName = os.path.split(path)
  62     try:
  63         otherpath = unicode( QFileDialog.getOpenFileName(QWidget(), _('Enter a filename for the copy of your wallet'), directory) )
  64         if otherpath and path!=otherpath:
  65             shutil.copy2(path, otherpath)
  66             QMessageBox.information(None,"Wallet backup created", _("A copy of your wallet file was created in")+" '%s'" % str(otherpath))
  67     except (IOError, os.error), reason:
  68         QMessageBox.critical(None,"Unable to create backup", _("Electrum was unable to copy your wallet file to the specified location.")+"\n" + str(reason))
  69
  70 def ok_cancel_buttons(dialog, ok_label=_("OK") ):
  71     hbox = QHBoxLayout()
  72     hbox.addStretch(1)
  73     b = QPushButton(_("Cancel"))
  74     hbox.addWidget(b)
  75     b.clicked.connect(dialog.reject)
  76     b = QPushButton(ok_label)
  77     hbox.addWidget(b)
  78     b.clicked.connect(dialog.accept)
  79     b.setDefault(True)
  80     return hbox
  81
  82 def text_dialog(parent, title, label, ok_label):
  83     dialog = QDialog(parent)
  84     dialog.setMinimumWidth(500)
  85     dialog.setWindowTitle(title)
  86     dialog.setModal(1)
  87     l = QVBoxLayout()
  88     dialog.setLayout(l)
  89     l.addWidget(QLabel(label))
  90     txt = QTextEdit()
  91     l.addWidget(txt)
  92     l.addLayout(ok_cancel_buttons(dialog, ok_label))
  93     if dialog.exec_():
  94         return unicode(txt.toPlainText())
  95