gui/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 import traceback
   7 import sys
   8 import threading
   9
  10 class WaitingDialog(QThread):
  11     def __init__(self, parent, message, run_task, on_complete=None):
  12         QThread.__init__(self)
  13         self.parent = parent
  14         self.d = QDialog(parent)
  15         self.d.setWindowTitle('Please wait')
  16         l = QLabel(message)
  17         vbox = QVBoxLayout(self.d)
  18         vbox.addWidget(l)
  19         self.run_task = run_task
  20         self.on_complete = on_complete
  21         self.d.connect(self.d, SIGNAL('done'), self.close)
  22         self.d.show()
  23
  24     def run(self):
  25         self.error = None
  26         try:
  27             self.result = self.run_task()
  28         except Exception as e:
  29             traceback.print_exc(file=sys.stdout)
  30             self.error = str(e)
  31         self.d.emit(SIGNAL('done'))
  32
  33     def close(self):
  34         self.d.accept()
  35         if self.error:
  36             QMessageBox.warning(self.parent, _('Error'), self.error, _('OK'))
  37             return
  38
  39         if self.on_complete:
  40             if type(self.result) is tuple:
  41                 self.on_complete(*self.result)
  42             else:
  43                 self.on_complete(self.result)
  44
  45
  46
  47 class Timer(QThread):
  48     def run(self):
  49         while True:
  50             self.emit(SIGNAL('timersignal'))
  51             time.sleep(0.5)
  52
  53
  54 class EnterButton(QPushButton):
  55     def __init__(self, text, func):
  56         QPushButton.__init__(self, text)
  57         self.func = func
  58         self.clicked.connect(func)
  59
  60     def keyPressEvent(self, e):
  61         if e.key() == Qt.Key_Return:
  62             apply(self.func,())
  63
  64
  65
  66
  67
  68 class HelpButton(QPushButton):
  69     def __init__(self, text):
  70         QPushButton.__init__(self, '?')
  71         self.help_text = text
  72         self.setFocusPolicy(Qt.NoFocus)
  73         self.setFixedWidth(20)
  74         self.alt = None
  75         self.clicked.connect(self.onclick)
  76
  77     def set_alt(self, func):
  78         self.alt = func
  79
  80     def onclick(self):
  81         if self.alt:
  82             apply(self.alt)
  83         else:
  84             QMessageBox.information(self, 'Help', self.help_text, 'OK')
  85
  86
  87
  88 def close_button(dialog, label=_("Close") ):
  89     hbox = QHBoxLayout()
  90     hbox.addStretch(1)
  91     b = QPushButton(label)
  92     hbox.addWidget(b)
  93     b.clicked.connect(dialog.close)
  94     b.setDefault(True)
  95     return hbox
  96
  97 def ok_cancel_buttons2(dialog, ok_label=_("OK") ):
  98     hbox = QHBoxLayout()
  99     hbox.addStretch(1)
 100     b = QPushButton(_("Cancel"))
 101     hbox.addWidget(b)
 102     b.clicked.connect(dialog.reject)
 103     b = QPushButton(ok_label)
 104     hbox.addWidget(b)
 105     b.clicked.connect(dialog.accept)
 106     b.setDefault(True)
 107     return hbox, b
 108
 109 def ok_cancel_buttons(dialog, ok_label=_("OK") ):
 110     hbox, b = ok_cancel_buttons2(dialog, ok_label)
 111     return hbox
 112
 113 def text_dialog(parent, title, label, ok_label, default=None):
 114     from qrtextedit import QRTextEdit
 115     dialog = QDialog(parent)
 116     dialog.setMinimumWidth(500)
 117     dialog.setWindowTitle(title)
 118     dialog.setModal(1)
 119     l = QVBoxLayout()
 120     dialog.setLayout(l)
 121     l.addWidget(QLabel(label))
 122     txt = QRTextEdit()
 123     if default:
 124         txt.setText(default)
 125     l.addWidget(txt)
 126     l.addLayout(ok_cancel_buttons(dialog, ok_label))
 127     if dialog.exec_():
 128         return unicode(txt.toPlainText())
 129
 130
 131
 132 def address_field(addresses):
 133     hbox = QHBoxLayout()
 134     address_e = QLineEdit()
 135     if addresses:
 136         address_e.setText(addresses[0])
 137     def func():
 138         i = addresses.index(str(address_e.text())) + 1
 139         i = i % len(addresses)
 140         address_e.setText(addresses[i])
 141     button = QPushButton(_('Address'))
 142     button.clicked.connect(func)
 143     hbox.addWidget(button)
 144     hbox.addWidget(address_e)
 145     return hbox, address_e
 146
 147
 148 def filename_field(parent, config, defaultname, select_msg):
 149
 150     vbox = QVBoxLayout()
 151     vbox.addWidget(QLabel(_("Format")))
 152     gb = QGroupBox("format", parent)
 153     b1 = QRadioButton(gb)
 154     b1.setText(_("CSV"))
 155     b1.setChecked(True)
 156     b2 = QRadioButton(gb)
 157     b2.setText(_("json"))
 158     vbox.addWidget(b1)
 159     vbox.addWidget(b2)
 160
 161     hbox = QHBoxLayout()
 162
 163     directory = config.get('io_dir', unicode(os.path.expanduser('~')))
 164     path = os.path.join( directory, defaultname )
 165     filename_e = QLineEdit()
 166     filename_e.setText(path)
 167
 168     def func():
 169         text = unicode(filename_e.text())
 170         _filter = "*.csv" if text.endswith(".csv") else "*.json" if text.endswith(".json") else None
 171         p = unicode( QFileDialog.getSaveFileName(None, select_msg, text, _filter))
 172         if p:
 173             filename_e.setText(p)
 174
 175     button = QPushButton(_('File'))
 176     button.clicked.connect(func)
 177     hbox.addWidget(button)
 178     hbox.addWidget(filename_e)
 179     vbox.addLayout(hbox)
 180
 181     def set_csv(v):
 182         text = unicode(filename_e.text())
 183         text = text.replace(".json",".csv") if v else text.replace(".csv",".json")
 184         filename_e.setText(text)
 185
 186     b1.clicked.connect(lambda: set_csv(True))
 187     b2.clicked.connect(lambda: set_csv(False))
 188
 189     return vbox, filename_e, b1
 190
 191
 192
 193 class MyTreeWidget(QTreeWidget):
 194     def __init__(self, parent):
 195         QTreeWidget.__init__(self, parent)
 196         self.setContextMenuPolicy(Qt.CustomContextMenu)
 197         self.connect(self, SIGNAL('itemActivated(QTreeWidgetItem*, int)'), self.itemactivated)
 198
 199     def itemactivated(self, item):
 200         if not item: return
 201         for i in range(0,self.viewport().height()/5):
 202             if self.itemAt(QPoint(0,i*5)) == item:
 203                 break
 204         else:
 205             return
 206         for j in range(0,30):
 207             if self.itemAt(QPoint(0,i*5 + j)) != item:
 208                 break
 209         self.emit(SIGNAL('customContextMenuRequested(const QPoint&)'), QPoint(50, i*5 + j - 1))
 210
 211
 212
 213
 214 if __name__ == "__main__":
 215     app = QApplication([])
 216     t = WaitingDialog(None, 'testing ...', lambda: [time.sleep(1)], lambda x: QMessageBox.information(None, 'done', "done", _('OK')))
 217     t.start()
 218     app.exec_()