gui/gui_classic/qt_util.py

   1 from 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):
  27
  28     s = Timer()
  29     s.start()
  30     w = QDialog()
  31     w.resize(200, 70)
  32     w.setWindowTitle('Electrum')
  33     l = QLabel('')
  34     vbox = QVBoxLayout()
  35     vbox.addWidget(l)
  36     w.setLayout(vbox)
  37     w.show()
  38     def ff():
  39         s = f()
  40         if s: l.setText(s)
  41         else: w.close()
  42     w.connect(s, SIGNAL('timersignal'), ff)
  43     w.exec_()
  44     w.destroy()
  45
  46
  47 class HelpButton(QPushButton):
  48     def __init__(self, text):
  49         QPushButton.__init__(self, '?')
  50         self.setFocusPolicy(Qt.NoFocus)
  51         self.setFixedWidth(20)
  52         self.clicked.connect(lambda: QMessageBox.information(self, 'Help', text, 'OK') )
  53
  54
  55
  56 def backup_wallet(path):
  57     import shutil
  58     directory, fileName = os.path.split(path)
  59     try:
  60         otherpath = unicode( QFileDialog.getOpenFileName(QWidget(), _('Enter a filename for the copy of your wallet'), directory) )
  61         if otherpath and path!=otherpath:
  62             shutil.copy2(path, otherpath)
  63             QMessageBox.information(None,"Wallet backup created", _("A copy of your wallet file was created in")+" '%s'" % str(otherpath))
  64     except (IOError, os.error), reason:
  65         QMessageBox.critical(None,"Unable to create backup", _("Electrum was unable to copy your wallet file to the specified location.")+"\n" + str(reason))
  66
  67 def ok_cancel_buttons(dialog, ok_label=_("OK") ):
  68     hbox = QHBoxLayout()
  69     hbox.addStretch(1)
  70     b = QPushButton(_("Cancel"))
  71     hbox.addWidget(b)
  72     b.clicked.connect(dialog.reject)
  73     b = QPushButton(ok_label)
  74     hbox.addWidget(b)
  75     b.clicked.connect(dialog.accept)
  76     b.setDefault(True)
  77     return hbox
  78
  79 def text_dialog(parent, title, label, ok_label):
  80     dialog = QDialog(parent)
  81     dialog.setMinimumWidth(500)
  82     dialog.setWindowTitle(title)
  83     dialog.setModal(1)
  84     l = QVBoxLayout()
  85     dialog.setLayout(l)
  86     l.addWidget(QLabel(label))
  87     txt = QTextEdit()
  88     l.addWidget(txt)
  89     l.addLayout(ok_cancel_buttons(dialog, ok_label))
  90     if dialog.exec_():
  91         return unicode(txt.toPlainText())
  92