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