class ExampleDialog(QDialog):
def __init__(self, parent):
QDialog.__init__(self, parent)
# enable minimize button
# testing to make sure key events are processed
# correctly when minimized
self.setWindowFlags(self.windowFlags()
| QtCore.Qt.WindowMinimizeButtonHint)
self.setGeometry(100, 100, 200, 100)
self.setWindowTitle("Hello World")
self.setToolTip("This is a <b>QWidget</b> widget")
self.btn = QPushButton("Log Text", self)
self.btn.setToolTip("This is a <b>QPushButton</b> widget")
self.btn.resize(self.btn.sizeHint())
self.btn.clicked.connect(self.logText)
self.lineedit = QLineEdit("Hello World", self)
self.lineedit.setToolTip("Type Something")
layout = QVBoxLayout(self)
layout.addWidget(self.lineedit)
layout.addWidget(self.btn)
def logText(self):
Application.LogMessage(self.lineedit.text())
class ExampleDialog( QDialog ):
def __init__( self, parent ):
QDialog.__init__( self, parent )
# enable minimize button
# testing to make sure key events are processed
# correctly when minimized
self.setWindowFlags(self.windowFlags() |
QtCore.Qt.WindowMinimizeButtonHint )
self.setGeometry( 100, 100, 200, 100 )
self.setWindowTitle( "Hello World" )
self.setToolTip( "This is a <b>QWidget</b> widget" )
self.btn = QPushButton( "Log Text", self )
self.btn.setToolTip( "This is a <b>QPushButton</b> widget" )
self.btn.resize( self.btn.sizeHint() )
self.btn.clicked.connect( self.logText )
self.lineedit = QLineEdit( "Hello World", self )
self.lineedit.setToolTip( "Type Something" )
layout = QVBoxLayout( self )
layout.addWidget( self.lineedit )
layout.addWidget( self.btn )
def logText( self ):
Application.LogMessage( self.lineedit.text() )
class UnitInputDialog(QDialog):
"""Dialog to select new units. Checks compatibility while typing
and does not allow to continue if incompatible.
Returns None if cancelled.
:param units: current units.
:param parent: parent widget.
>>> new_units = UnitInputDialog.get_units('ms')
"""
def __init__(self, units, parent=None):
super().__init__(parent)
self.setupUi(parent)
self.units = units
self.source_units.setText(str(units))
def setupUi(self, parent):
self.resize(275, 172)
self.setWindowTitle('Convert units')
self.layout = QVBoxLayout(parent)
self.layout.setSizeConstraint(QLayout.SetFixedSize)
align = (Qt.AlignRight | Qt.AlignTrailing | Qt.AlignVCenter)
self.layout1 = QHBoxLayout()
self.label1 = QLabel()
self.label1.setMinimumSize(QSize(100, 0))
self.label1.setText('Convert from:')
self.label1.setAlignment(align)
self.layout1.addWidget(self.label1)
self.source_units = QLineEdit()
self.source_units.setReadOnly(True)
self.layout1.addWidget(self.source_units)
self.layout.addLayout(self.layout1)
self.layout2 = QHBoxLayout()
self.label2 = QLabel()
self.label2.setMinimumSize(QSize(100, 0))
self.label2.setText('to:')
self.label2.setAlignment(align)
self.layout2.addWidget(self.label2)
self.destination_units = QLineEdit()
self.layout2.addWidget(self.destination_units)
self.layout.addLayout(self.layout2)
self.message = QLabel()
self.message.setText('')
self.message.setAlignment(Qt.AlignCenter)
self.layout.addWidget(self.message)
self.buttonBox = QDialogButtonBox()
self.buttonBox.setOrientation(Qt.Horizontal)
self.buttonBox.setStandardButtons(QDialogButtonBox.Ok)
self.layout.addWidget(self.buttonBox)
self.buttonBox.setEnabled(False)
self.buttonBox.accepted.connect(self.accept)
self.destination_units.textChanged.connect(self.check)
self.setLayout(self.layout)
self.destination_units.setFocus()
def check(self):
units = self.destination_units.text().strip()
if not units:
return
try:
new_units = Q_(1, units)
factor = self.units.to(new_units).magnitude
except LookupError or SyntaxError:
self.message.setText('Cannot parse units')
self.buttonBox.setEnabled(False)
except ValueError:
self.message.setText('Incompatible units')
self.buttonBox.setEnabled(False)
else:
self.message.setText('factor {:f}'.format(factor))
self.buttonBox.setEnabled(True)
@staticmethod
def get_units(units):
"""Creates and display a UnitInputDialog and return new units.
Return None if the user cancelled.
"""
dialog = UnitInputDialog(Q_(1, units.units))
if dialog.exec_():
return dialog.destination_units.text()
return None
class UnitInputDialog(QDialog):
"""Dialog to select new units. Checks compatibility while typing
and does not allow to continue if incompatible.
Returns None if cancelled.
:param units: current units.
:param parent: parent widget.
>>> new_units = UnitInputDialog.get_units('ms')
"""
def __init__(self, units, parent=None):
super().__init__(parent)
self.setupUi(parent)
self.units = units
self.source_units.setText(str(units))
def setupUi(self, parent):
self.resize(275, 172)
self.setWindowTitle('Convert units')
self.layout = QVBoxLayout(parent)
self.layout.setSizeConstraint(QLayout.SetFixedSize)
align = (Qt.AlignRight | Qt.AlignTrailing | Qt.AlignVCenter)
self.layout1 = QHBoxLayout()
self.label1 = QLabel()
self.label1.setMinimumSize(QSize(100, 0))
self.label1.setText('Convert from:')
self.label1.setAlignment(align)
self.layout1.addWidget(self.label1)
self.source_units = QLineEdit()
self.source_units.setReadOnly(True)
self.layout1.addWidget(self.source_units)
self.layout.addLayout(self.layout1)
self.layout2 = QHBoxLayout()
self.label2 = QLabel()
self.label2.setMinimumSize(QSize(100, 0))
self.label2.setText('to:')
self.label2.setAlignment(align)
self.layout2.addWidget(self.label2)
self.destination_units = QLineEdit()
self.layout2.addWidget(self.destination_units)
self.layout.addLayout(self.layout2)
self.message = QLabel()
self.message.setText('')
self.message.setAlignment(Qt.AlignCenter)
self.layout.addWidget(self.message)
self.buttonBox = QDialogButtonBox()
self.buttonBox.setOrientation(Qt.Horizontal)
self.buttonBox.setStandardButtons(QDialogButtonBox.Ok)
self.layout.addWidget(self.buttonBox)
self.buttonBox.setEnabled(False)
self.buttonBox.accepted.connect(self.accept)
self.destination_units.textChanged.connect(self.check)
self.setLayout(self.layout)
self.destination_units.setFocus()
def check(self):
units = self.destination_units.text().strip()
if not units:
return
try:
new_units = Q_(1, units)
factor = self.units.to(new_units).magnitude
except LookupError or SyntaxError:
self.message.setText('Cannot parse units')
self.buttonBox.setEnabled(False)
except ValueError:
self.message.setText('Incompatible units')
self.buttonBox.setEnabled(False)
else:
self.message.setText('factor {:f}'.format(factor))
self.buttonBox.setEnabled(True)
@staticmethod
def get_units(units):
"""Creates and display a UnitInputDialog and return new units.
Return None if the user cancelled.
"""
dialog = UnitInputDialog(Q_(1, units.units))
if dialog.exec_():
return dialog.destination_units.text()
return None