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#****************************************************************************
# optiondlg.py, provides classes for option setting dialogs
#
# Copyright (C) 2014, Douglas W. Bell
#
# This is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License, either Version 2 or any later
# version. This program is distributed in the hope that it will be useful,
# but WITTHOUT ANY WARRANTY. See the included LICENSE file for details.
#*****************************************************************************
import sys
from PyQt4 import QtCore, QtGui
class OptionDlg(QtGui.QDialog):
"""Works with Option class to provide a dialog for pref/options.
"""
def __init__(self, option, parent=None):
QtGui.QDialog.__init__(self, parent)
self.setWindowFlags(QtCore.Qt.Dialog | QtCore.Qt.WindowTitleHint |
QtCore.Qt.WindowSystemMenuHint)
self.option = option
topLayout = QtGui.QVBoxLayout(self)
self.setLayout(topLayout)
self.columnLayout = QtGui.QHBoxLayout()
topLayout.addLayout(self.columnLayout)
self.gridLayout = QtGui.QGridLayout()
self.columnLayout.addLayout(self.gridLayout)
self.oldLayout = self.gridLayout
ctrlLayout = QtGui.QHBoxLayout()
topLayout.addLayout(ctrlLayout)
ctrlLayout.addStretch(0)
okButton = QtGui.QPushButton(_('&OK'), self)
ctrlLayout.addWidget(okButton)
okButton.clicked.connect(self.accept)
cancelButton = QtGui.QPushButton(_('&Cancel'), self)
ctrlLayout.addWidget(cancelButton)
cancelButton.clicked.connect(self.reject)
self.setWindowTitle(_('Preferences'))
self.itemList = []
self.curGroup = None
def addItem(self, dlgItem, widget, label=None):
"""Add a control with optional label, called by OptionDlgItem.
"""
row = self.gridLayout.rowCount()
if label:
self.gridLayout.addWidget(label, row, 0)
self.gridLayout.addWidget(widget, row, 1)
else:
self.gridLayout.addWidget(widget, row, 0, 1, 2)
self.itemList.append(dlgItem)
def startGroupBox(self, title, intSpace=5):
"""Use a group box for next added items.
"""
self.curGroup = QtGui.QGroupBox(title, self)
row = self.oldLayout.rowCount()
self.oldLayout.addWidget(self.curGroup, row, 0, 1, 2)
self.gridLayout = QtGui.QGridLayout(self.curGroup)
self.gridLayout.setVerticalSpacing(intSpace)
def endGroupBox(self):
"""Cancel group box for next added items.
"""
self.gridLayout = self.oldLayout
self.curGroup = None
def startNewColumn(self):
"""Cancel any group box and start a second column.
"""
self.curGroup = None
row = self.oldLayout.rowCount()
self.gridLayout = QtGui.QGridLayout()
self.columnLayout.addLayout(self.gridLayout)
self.oldLayout = self.gridLayout
def parentGroup(self):
"""Return parent for new widgets.
"""
if self.curGroup:
return self.curGroup
return self
def accept(self):
"""Called by dialog when OK button pressed.
"""
for item in self.itemList:
item.updateData()
QtGui.QDialog.accept(self)
class OptionDlgItem:
"""Base class for items to add to dialog.
"""
def __init__(self, dlg, key, writeChg):
self.dlg = dlg
self.key = key
self.writeChg = writeChg
self.control = None
def updateData(self):
"""Dummy update function.
"""
pass
class OptionDlgBool(OptionDlgItem):
"""Holds widget for bool checkbox.
"""
def __init__(self, dlg, key, menuText, writeChg=True):
OptionDlgItem.__init__(self, dlg, key, writeChg)
self.control = QtGui.QCheckBox(menuText, dlg.parentGroup())
self.control.setChecked(dlg.option.boolData(key))
dlg.addItem(self, self.control)
def updateData(self):
"""Update Option class based on checkbox status.
"""
if self.control.isChecked() != self.dlg.option.boolData(self.key):
if self.control.isChecked():
self.dlg.option.changeData(self.key, 'yes', self.writeChg)
else:
self.dlg.option.changeData(self.key, 'no', self.writeChg)
class OptionDlgInt(OptionDlgItem):
"""Holds widget for int spinbox.
"""
def __init__(self, dlg, key, menuText, min, max, writeChg=True, step=1,
wrap=False, suffix=''):
OptionDlgItem.__init__(self, dlg, key, writeChg)
label = QtGui.QLabel(menuText, dlg.parentGroup())
self.control = QtGui.QSpinBox(dlg.parentGroup())
self.control.setMinimum(min)
self.control.setMaximum(max)
self.control.setSingleStep(step)
self.control.setWrapping(wrap)
self.control.setSuffix(suffix)
self.control.setValue(dlg.option.intData(key, min, max))
dlg.addItem(self, self.control, label)
def updateData(self):
"""Update Option class based on spinbox status.
"""
if self.control.value() != int(self.dlg.option.numData(self.key)):
self.dlg.option.changeData(self.key, repr(self.control.value()),
self.writeChg)
class OptionDlgDbl(OptionDlgItem):
"""Holds widget for double line edit.
"""
def __init__(self, dlg, key, menuText, min, max, writeChg=True):
OptionDlgItem.__init__(self, dlg, key, writeChg)
label = QtGui.QLabel(menuText, dlg.parentGroup())
self.control = QtGui.QLineEdit(repr(dlg.option.numData(key, min, max)),
dlg.parentGroup())
valid = QtGui.QDoubleValidator(min, max, 6, self.control)
self.control.setValidator(valid)
dlg.addItem(self, self.control, label)
def updateData(self):
"""Update Option class based on edit status.
"""
text = self.control.text()
unusedPos = 0
if self.control.validator().validate(text, unusedPos)[0] != \
QtGui.QValidator.Acceptable:
return
num = float(text)
if num != self.dlg.option.numData(self.key):
self.dlg.option.changeData(self.key, repr(num), self.writeChg)
class OptionDlgStr(OptionDlgItem):
"""Holds widget for string line edit.
"""
def __init__(self, dlg, key, menuText, writeChg=True):
OptionDlgItem.__init__(self, dlg, key, writeChg)
label = QtGui.QLabel(menuText, dlg.parentGroup())
self.control = QtGui.QLineEdit(dlg.option.strData(key, True),
dlg.parentGroup())
dlg.addItem(self, self.control, label)
def updateData(self):
"""Update Option class based on edit status.
"""
newStr = self.control.text()
if newStr != self.dlg.option.strData(self.key, True):
self.dlg.option.changeData(self.key, newStr, self.writeChg)
class OptionDlgRadio(OptionDlgItem):
"""Holds widget for exclusive radio button group.
"""
def __init__(self, dlg, key, headText, textList, writeChg=True):
# textList is list of tuples: optionText, labelText
OptionDlgItem.__init__(self, dlg, key, writeChg)
self.optionList = [x[0] for x in textList]
buttonBox = QtGui.QGroupBox(headText, dlg.parentGroup())
self.control = QtGui.QButtonGroup(buttonBox)
layout = QtGui.QVBoxLayout(buttonBox)
buttonBox.setLayout(layout)
optionSetting = dlg.option.strData(key)
id = 0
for optionText, labelText in textList:
button = QtGui.QRadioButton(labelText, buttonBox)
layout.addWidget(button)
self.control.addButton(button, id)
id += 1
if optionText == optionSetting:
button.setChecked(True)
dlg.addItem(self, buttonBox)
def updateData(self):
"""Update Option class based on button status.
"""
data = self.optionList[self.control.checkedId()]
if data != self.dlg.option.strData(self.key):
self.dlg.option.changeData(self.key, data, self.writeChg)
class OptionDlgPush(OptionDlgItem):
"""Holds widget for extra misc. push button.
"""
def __init__(self, dlg, text, cmd):
OptionDlgItem.__init__(self, dlg, '', 0)
self.control = QtGui.QPushButton(text, dlg.parentGroup())
self.control.clicked.connect(cmd)
dlg.addItem(self, self.control)
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