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# coding: utf-8
# /*##########################################################################
# Copyright (C) 2016-2018 European Synchrotron Radiation Facility
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# ############################################################################*/
"""Context shared through all the application"""
__authors__ = ["V. Valls"]
__license__ = "MIT"
__date__ = "10/05/2019"
import weakref
import logging
import functools
import os
from silx.gui import qt
from ..utils import stringutil
_logger = logging.getLogger(__name__)
class ApplicationContext(object):
__instance = None
@staticmethod
def _releaseSingleton():
ApplicationContext.__instance = None
@staticmethod
def instance():
"""
:rtype: CalibrationContext
"""
assert(ApplicationContext.__instance is not None)
return ApplicationContext.__instance
def __init__(self, settings=None):
assert(ApplicationContext.__instance is None)
self.__parent = None
self.__dialogStates = {}
self.__dialogGeometry = {}
self.__settings = settings
ApplicationContext.__instance = self
def saveSettings(self):
"""Save the settings of all the application"""
# Synchronize the file storage
self.__settings.sync()
def restoreWindowLocationSettings(self, groupName, window):
"""Restore the window settings using this settings object
:param qt.QSettings settings: Initialized settings
"""
settings = self.__settings
if settings is None:
_logger.debug("Settings not set")
return
settings.beginGroup(groupName)
size = settings.value("size", qt.QSize())
pos = settings.value("pos", qt.QPoint())
isFullScreen = settings.value("full-screen", False)
try:
if not isinstance(isFullScreen, bool):
isFullScreen = stringutil.to_bool(isFullScreen)
except ValueError:
isFullScreen = False
settings.endGroup()
if not pos.isNull():
window.move(pos)
if not size.isNull():
window.resize(size)
if isFullScreen:
window.showFullScreen()
def saveWindowLocationSettings(self, groupName, window):
"""Save the window settings to this settings object
:param qt.QSettings settings: Initialized settings
"""
settings = self.__settings
if settings is None:
_logger.debug("Settings not set")
return
isFullScreen = bool(window.windowState() & qt.Qt.WindowFullScreen)
if isFullScreen:
# show in normal to catch the normal geometry
window.showNormal()
settings.beginGroup(groupName)
settings.setValue("size", window.size())
settings.setValue("pos", window.pos())
settings.setValue("full-screen", isFullScreen)
settings.endGroup()
if isFullScreen:
window.showFullScreen()
def setParent(self, parent):
self.__parent = weakref.ref(parent)
def parent(self):
if self.__parent is None:
return None
return self.__parent()
def __configureDialog(self, dialog):
dialogState = self.__dialogStates.get(type(dialog), None)
if dialogState is None:
currentDirectory = os.getcwd()
dialog.setDirectory(currentDirectory)
else:
dialog.restoreState(dialogState)
geometry = self.__dialogGeometry.get(type(dialog), None)
if geometry is not None:
dialog.setGeometry(geometry)
def __saveDialogState(self, dialog):
self.__dialogStates[type(dialog)] = dialog.saveState()
self.__dialogGeometry[type(dialog)] = dialog.geometry()
def createFileDialog(self, parent, previousFile=None):
"""Create a file dialog configured with a default path.
:rtype: qt.QFileDialog
"""
dialog = qt.QFileDialog(parent)
dialog.finished.connect(functools.partial(self.__saveDialogState, dialog))
self.__configureDialog(dialog)
if previousFile is not None:
if os.path.exists(previousFile):
if os.path.isdir(previousFile):
directory = previousFile
else:
directory = os.path.dirname(previousFile)
dialog.setDirectory(directory)
return dialog
def createImageFileDialog(self, parent, previousFile=None):
"""Create an image file dialog configured with a default path.
:rtype: silx.gui.dialog.ImageFileDialog.ImageFileDialog
"""
from silx.gui.dialog.ImageFileDialog import ImageFileDialog
dialog = ImageFileDialog(parent)
dialog.finished.connect(functools.partial(self.__saveDialogState, dialog))
if hasattr(self, "getRawColormap"):
colormap = self.getRawColormap()
colormap = colormap.copy()
colormap.setVRange(None, None)
dialog.setColormap(colormap)
self.__configureDialog(dialog)
if previousFile is not None:
dialog.selectUrl(previousFile)
return dialog
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