openlp/openlp/core/lib/settingsmanager.py

210 lines
7.5 KiB
Python

# -*- coding: utf-8 -*-
# vim: autoindent shiftwidth=4 expandtab textwidth=80 tabstop=4 softtabstop=4
###############################################################################
# OpenLP - Open Source Lyrics Projection #
# --------------------------------------------------------------------------- #
# Copyright (c) 2008-2010 Raoul Snyman #
# Portions copyright (c) 2008-2010 Tim Bentley, Jonathan Corwin, Michael #
# Gorven, Scott Guerrieri, Christian Richter, Maikel Stuivenberg, Martin #
# Thompson, Jon Tibble, Carsten Tinggaard #
# --------------------------------------------------------------------------- #
# 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; version 2 of the License. #
# #
# 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, write to the Free Software Foundation, Inc., 59 #
# Temple Place, Suite 330, Boston, MA 02111-1307 USA #
###############################################################################
"""
Provide handling for persisting OpenLP settings. OpenLP uses QSettings to
manage settings persistence. QSettings provides a single API for saving and
retrieving settings from the application but writes to disk in an OS dependant
format.
"""
import os
from PyQt4 import QtCore
from openlp.core.utils import AppLocation
class SettingsManager(object):
"""
Class to control the initial settings for the UI and provide helper
functions for the loading and saving of application settings.
"""
def __init__(self, screen):
self.screen = screen.current
self.width = self.screen[u'size'].width()
self.height = self.screen[u'size'].height()
self.mainwindow_height = self.height * 0.8
mainwindow_docbars = self.width / 5
self.mainwindow_left = 0
self.mainwindow_right = 0
if mainwindow_docbars > 300:
self.mainwindow_left = 300
self.mainwindow_right = 300
else:
self.mainwindow_left = mainwindow_docbars
self.mainwindow_right = mainwindow_docbars
self.slidecontroller = (self.width - (
self.mainwindow_left + self.mainwindow_right) - 100 ) / 2
self.slidecontroller_image = self.slidecontroller - 50
def get_preview_visibility(self):
"""
Return the preview panel's visibility.
"""
return QtCore.QSettings().value(u'user interface/preview panel',
QtCore.QVariant(True)).toBool()
def set_preview_visibility(self, visible):
"""
Set the preview panel's visibility.
"""
QtCore.QSettings().setValue(u'user interface/preview panel',
QtCore.QVariant(visible))
def get_live_visibility(self):
"""
Return the live panel's visibility.
"""
return QtCore.QSettings().value(u'user interface/live panel',
QtCore.QVariant(True)).toBool()
def set_live_visibility(self, visible):
"""
Set the live panel's visibility.
"""
QtCore.QSettings().setValue(u'user interface/live panel',
QtCore.QVariant(visible))
@staticmethod
def get_last_dir(section, num=None):
"""
Read the last directory used for plugin.
``section``
The section of code calling the method. This is used in the
settings key.
``num``
Defaults to *None*. A further qualifier.
"""
if num:
name = u'last directory %d' % num
else:
name = u'last directory'
last_dir = unicode(QtCore.QSettings().value(
section + u'/' + name, QtCore.QVariant(u'')).toString())
return last_dir
@staticmethod
def set_last_dir(section, directory, num=None):
"""
Save the last directory used for plugin.
``section``
The section of code calling the method. This is used in the
settings key.
``directory``
The directory being stored in the settings.
``num``
Defaults to *None*. A further qualifier.
"""
if num:
name = u'last directory %d' % num
else:
name = u'last directory'
QtCore.QSettings().setValue(
section + u'/' + name, QtCore.QVariant(directory))
@staticmethod
def set_list(section, name, list):
"""
Save a list to application settings.
``section``
The section of the settings to store this list.
``name``
The name of the list to save.
``list``
The list of values to save.
"""
settings = QtCore.QSettings()
settings.beginGroup(section)
old_count = settings.value(
u'%s count' % name, QtCore.QVariant(0)).toInt()[0]
new_count = len(list)
settings.setValue(u'%s count' % name, QtCore.QVariant(new_count))
for counter in range (0, new_count):
settings.setValue(
u'%s %d' % (name, counter), QtCore.QVariant(list[counter-1]))
if old_count > new_count:
# Tidy up any old list items
for counter in range(new_count, old_count):
settings.remove(u'%s %d' % (name, counter))
settings.endGroup()
@staticmethod
def load_list(section, name):
"""
Load a list from the config file.
``section``
The section of the settings to load the list from.
``name``
The name of the list.
"""
settings = QtCore.QSettings()
settings.beginGroup(section)
list_count = settings.value(
u'%s count' % name, QtCore.QVariant(0)).toInt()[0]
list = []
if list_count:
for counter in range(0, list_count):
item = unicode(
settings.value(u'%s %d' % (name, counter)).toString())
if item:
list.append(item)
settings.endGroup()
return list
@staticmethod
def get_files(section=None, extension=None):
"""
Get a list of files from the data files path.
``section``
Defaults to *None*. The section of code getting the files - used
to load from a section's data subdirectory.
``extension``
Defaults to *None*. The extension to search for.
"""
path = AppLocation.get_data_path()
if section:
path = os.path.join(path, section)
try:
files = os.listdir(path)
except OSError:
return []
if extension:
return [filename for filename in files
if extension == os.path.splitext(filename)[1]]
else:
# no filtering required
return files