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