"""Module Documentation here
"""
#=========================================================================================
# Licence, Reference and Credits
#=========================================================================================
__copyright__ = "Copyright (C) CCPN project (http://www.ccpn.ac.uk) 2014 - 2020"
__credits__ = ("Ed Brooksbank, Luca Mureddu, Timothy J Ragan & Geerten W Vuister")
__licence__ = ("CCPN licence. See http://www.ccpn.ac.uk/v3-software/downloads/license")
__reference__ = ("Skinner, S.P., Fogh, R.H., Boucher, W., Ragan, T.J., Mureddu, L.G., & Vuister, G.W.",
"CcpNmr AnalysisAssign: a flexible platform for integrated NMR analysis",
"J.Biomol.Nmr (2016), 66, 111-124, http://doi.org/10.1007/s10858-016-0060-y")
#=========================================================================================
# Last code modification
#=========================================================================================
__modifiedBy__ = "$modifiedBy: Ed Brooksbank $"
__dateModified__ = "$dateModified: 2020-10-27 09:43:03 +0000 (Tue, October 27, 2020) $"
__version__ = "$Revision: 3.0.1 $"
#=========================================================================================
# Created
#=========================================================================================
__author__ = "$Author: CCPN $"
__date__ = "$Date: 2017-04-07 10:28:41 +0000 (Fri, April 07, 2017) $"
#=========================================================================================
# Start of code
#=========================================================================================
from contextlib import contextmanager
from PyQt5 import QtGui, QtWidgets, QtCore
from PyQt5.QtCore import pyqtSignal
from ccpn.ui.gui.widgets.Base import Base
[docs]class Spinbox(QtWidgets.QSpinBox, Base):
returnPressed = pyqtSignal(int)
wheelChanged = pyqtSignal(int)
def __init__(self, parent, prefix=None, value=None, step=None, min=None, max=None,
showButtons=True, callback=None, editable=True, **kwds):
super().__init__(parent)
Base._init(self, **kwds)
if min is not None:
self.setMinimum(min)
if max is not None:
self.setMaximum(max)
if value is not None: #set Value only after you set min and max
self.setValue(value)
if step is not None:
self.setSingleStep(step)
if prefix:
self.setPrefix(prefix + ' ')
if showButtons is False:
self.setButtonSymbols(QtWidgets.QAbstractSpinBox.NoButtons)
self._callback = None
self.setCallback(callback)
lineEdit = self.lineEdit()
lineEdit.returnPressed.connect(self._keyPressed)
self._internalWheelEvent = True
self._keyPressed = False
# change focusPolicy so that spinboxes don't grab focus unless selected
self.setFocusPolicy(QtCore.Qt.StrongFocus)
self.setStyleSheet('Spinbox { padding: 3px 3px 3px 3px; }'
'Spinbox:disabled { background-color: white; }')
[docs] def wheelEvent(self, event: QtGui.QWheelEvent) -> None:
"""Process the wheelEvent for the spinBox
"""
# emit the value when wheel event has occurred, only when hasFocus
if self.hasFocus():
super().wheelEvent(event)
self.wheelChanged.emit(self.value())
else:
event.ignore()
@contextmanager
def _useExternalWheelEvent(self):
try:
self._internalWheelEvent = False
yield
finally:
self._internalWheelEvent = True
def _externalWheelEvent(self, event):
with self._useExternalWheelEvent():
self.wheelEvent(event)
[docs] def stepBy(self, steps: int) -> None:
if self._internalWheelEvent:
super().stepBy(steps)
else:
super().stepBy(1 if steps > 0 else -1 if steps < 0 else steps)
[docs] def get(self):
return self.value()
[docs] def set(self, p_int):
self.setValue(p_int)
def _keyPressed(self, *args):
"""emit the value when return has been pressed
"""
self.returnPressed.emit(self.value())
[docs] def setCallback(self, callback):
"""Sets callback; disconnects if callback=None
"""
if self._callback is not None:
self.valueChanged.disconnect()
if callback:
self.valueChanged.connect(callback)
self._callback = callback
def _getSaveState(self):
"""
Internal. Called for saving/restoring the widget state.
"""
return self.get()
def _setSavedState(self, value):
"""
Internal. Called for saving/restoring the widget state.
"""
return self.set(value)
if __name__ == '__main__':
from ccpn.ui.gui.widgets.Application import TestApplication
from ccpn.ui.gui.popups.Dialog import CcpnDialog
app = TestApplication()
popup = CcpnDialog()
sb = Spinbox(popup, step=10, grid=(0, 0))
sb.setPrefix('H Weight ')
popup.show()
popup.raise_()
app.start()