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