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
   8 class Timer(QThread):
   9     def run(self):
  10         while True:
  11             self.emit(SIGNAL('timersignal'))
  12             time.sleep(0.5)
  13
  14
  15 class EnterButton(QPushButton):
  16     def __init__(self, text, func):
  17         QPushButton.__init__(self, text)
  18         self.func = func
  19         self.clicked.connect(func)
  20
  21     def keyPressEvent(self, e):
  22         if e.key() == Qt.Key_Return:
  23             apply(self.func,())
  24
  25
  26
  27
  28
  29 class HelpButton(QPushButton):
  30     def __init__(self, text):
  31         QPushButton.__init__(self, '?')
  32         self.setFocusPolicy(Qt.NoFocus)
  33         self.setFixedWidth(20)
  34         self.clicked.connect(lambda: QMessageBox.information(self, 'Help', text, 'OK') )
  35
  36
  37
  38
  39 def close_button(dialog, label=_("Close") ):
  40     hbox = QHBoxLayout()
  41     hbox.addStretch(1)
  42     b = QPushButton(label)
  43     hbox.addWidget(b)
  44     b.clicked.connect(dialog.close)
  45     b.setDefault(True)
  46     return hbox
  47
  48 def ok_cancel_buttons(dialog, ok_label=_("OK") ):
  49     hbox = QHBoxLayout()
  50     hbox.addStretch(1)
  51     b = QPushButton(_("Cancel"))
  52     hbox.addWidget(b)
  53     b.clicked.connect(dialog.reject)
  54     b = QPushButton(ok_label)
  55     hbox.addWidget(b)
  56     b.clicked.connect(dialog.accept)
  57     b.setDefault(True)
  58     return hbox
  59
  60 def text_dialog(parent, title, label, ok_label, default=None):
  61     dialog = QDialog(parent)
  62     dialog.setMinimumWidth(500)
  63     dialog.setWindowTitle(title)
  64     dialog.setModal(1)
  65     l = QVBoxLayout()
  66     dialog.setLayout(l)
  67     l.addWidget(QLabel(label))
  68     txt = QTextEdit()
  69     if default:
  70         txt.setText(default)
  71     l.addWidget(txt)
  72     l.addLayout(ok_cancel_buttons(dialog, ok_label))
  73     if dialog.exec_():
  74         return unicode(txt.toPlainText())
  75
  76
  77 class MyTreeWidget(QTreeWidget):
  78     def __init__(self, parent):
  79         QTreeWidget.__init__(self, parent)
  80         self.setContextMenuPolicy(Qt.CustomContextMenu)
  81         self.connect(self, SIGNAL('itemActivated(QTreeWidgetItem*, int)'), self.itemactivated)
  82
  83     def itemactivated(self, item):
  84         if not item: return
  85         for i in range(0,self.viewport().height()/5):
  86             if self.itemAt(QPoint(0,i*5)) == item:
  87                 break
  88         else:
  89             return
  90         for j in range(0,30):
  91             if self.itemAt(QPoint(0,i*5 + j)) != item:
  92                 break
  93         self.emit(SIGNAL('customContextMenuRequested(const QPoint&)'), QPoint(50, i*5 + j - 1))
  94