Source code for lib_openmolar.common.qt4.widgets.preference_manager
#! /usr/bin/env python
# -*- coding: utf-8 -*-
###############################################################################
## ##
## Copyright 2010, Neil Wallace <rowinggolfer@googlemail.com> ##
## ##
## This program is free software: you can redistribute it and/or modify ##
## it under the terms of the GNU General Public License as published by ##
## the Free Software Foundation, either version 3 of the License, or ##
## (at your option) any later version. ##
## ##
## This program is distributed in the hope that it will be useful, ##
## but WITHOUT ANY WARRANTY; without even the implied warranty of ##
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ##
## GNU General Public License for more details. ##
## ##
## You should have received a copy of the GNU General Public License ##
## along with this program. If not, see <http://www.gnu.org/licenses/>. ##
## ##
###############################################################################
from PyQt4 import QtGui, QtCore
from lib_openmolar.common.qt4.widgets import Advisor
[docs]class Preference(object):
'''
A custom data structure used by PreferencesDialog
'''
[docs] def __init__(self, title):
self.title = title
self.widget = QtGui.QLabel(title + " hello world")
self.icon = QtGui.QIcon.fromTheme("help-about")
[docs]class PreferencesDialog(QtGui.QDialog, Advisor):
'''
A custom dialog providing a listWidget and a connected panel
'''
[docs] def __init__(self, parent=None):
QtGui.QDialog.__init__(self, parent)
Advisor.__init__(self, parent)
self.setWindowTitle(u"Openmolar %s"% _("Preferences"))
self.listwidget = QtGui.QListWidget()
close_but = QtGui.QPushButton(_("Close"))
left_frame = QtGui.QFrame()
layout = QtGui.QVBoxLayout(left_frame)
layout.addWidget(QtGui.QLabel(_("Preference Options")))
layout.addWidget(self.listwidget)
layout.addWidget(close_but)
self.stackedwidget = QtGui.QStackedWidget(self)
splitter = QtGui.QSplitter(self)
splitter.addWidget(left_frame)
splitter.addWidget(self.stackedwidget)
self.connect(self.listwidget,
QtCore.SIGNAL("currentRowChanged (int)"),
self.stackedwidget.setCurrentIndex)
self.add_font_option()
layout = QtGui.QVBoxLayout(self)
layout.addWidget(splitter)
close_but.clicked.connect(self.accept)
[docs] def add_font_option(self):
'''
this is so useful, I include it by default
'''
pref = Preference(_("Fonts"))
pref.setWidget(FontOptionsWidget(self.parent()))
pref.setIcon(QtGui.QIcon.fromTheme("applications-fonts"))
self.add_preference_dialog(pref)
[docs] def add_preference_dialog(self, preference):
'''
takes a single instance of Preference class
and adds it to the dialog
'''
self.insert_preference_dialog(-1, preference)
[docs] def insert_preference_dialog(self, index, preference):
'''
takes a single instance of Preference class
and adds it to the dialog
'''
count = self.listwidget.count()
if index < 0 or index > count:
index = count
list_widget_item = QtGui.QListWidgetItem()
list_widget_item.setIcon(preference.icon)
list_widget_item.setText(preference.title)
self.listwidget.insertItem(index, list_widget_item)
scrollarea = QtGui.QScrollArea(self)
scrollarea.setWidgetResizable(True)
scrollarea.setWidget(preference.widget)
self.stackedwidget.insertWidget(index, scrollarea)
self.listwidget.setCurrentRow(index)
[docs]class FontOptionsWidget(QtGui.QWidget):
'''
a widget, added at runtime to the preferences dialog,
standard fonts dialog
'''
[docs] def __init__(self, parent=None):
super(FontOptionsWidget, self).__init__(parent)
try:
self.systemFont = parent.system_font
self.initialFont = parent.font()
except AttributeError:
font = QtGui.QApplication.instance().font()
self.systemFont = font
self.initialFont = font
self.fontdialog = QtGui.QFontDialog()
self.fontdialog.setCurrentFont(self.initialFont)
self.fontdialog.setOption(self.fontdialog.NoButtons)
buttonBox = QtGui.QDialogButtonBox(self)
buttonBox.addButton(buttonBox.Apply)
self.resetBut = buttonBox.addButton(_("Reset to Original Font"),
buttonBox.RejectRole)
self.systemBut = buttonBox.addButton(_("Use System Font"),
buttonBox.ResetRole)
layout = QtGui.QVBoxLayout(self)
layout.addWidget(self.fontdialog)
layout.addWidget(buttonBox)
self.connect(buttonBox, QtCore.SIGNAL("clicked (QAbstractButton *)"),
self.apply)
[docs] def apply(self, but):
if but == self.resetBut:
self.fontdialog.setCurrentFont(self.initialFont)
elif but == self.systemBut:
self.fontdialog.setCurrentFont(self.systemFont)
QtGui.QApplication.instance().setFont(self.fontdialog.currentFont())
def _test():
app = QtGui.QApplication([])
dl = PreferencesDialog()
dl.show()
app.exec_()
if __name__ == "__main__":
import gettext
gettext.install("")
_test()
