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