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#/*##########################################################################
# Copyright (C) 2004-2016 V.A. Sole, European Synchrotron Radiation Facility
#
# This file is part of the PyMca X-ray Fluorescence Toolkit developed at
# the ESRF by the Software group.
#
# 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.
#
#############################################################################*/
__author__ = "V.A. Sole - ESRF Data Analysis"
__contact__ = "sole@esrf.fr"
__license__ = "MIT"
__copyright__ = "European Synchrotron Radiation Facility, Grenoble, France"
import sys
import traceback
"""
This module simplifies writing code that has to deal with with PySide and PyQt4.
"""
# force cx_freeze to consider sip among the modules to add
# to the binary packages
if (('PySide' in sys.modules) or
(hasattr(sys, 'argv') and 'PySide' in sys.argv)):
# argv might not be defined for embedded python (e.g., in Qt designer)
from PySide.QtCore import *
from PySide.QtGui import *
try:
from PySide.QtSvg import *
except:
pass
try:
from PySide.QtOpenGL import *
except:
pass
pyqtSignal = Signal
#matplotlib has difficulties to identify PySide
try:
import matplotlib
matplotlib.rcParams['backend.qt4']='PySide'
except:
pass
elif "PyQt5" in sys.modules:
try:
import sip
except:
# PyQt5 always uses API 2
pass
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtPrintSupport import *
try:
from PyQt5.QtOpenGL import *
except:
pass
try:
from PyQt5.QtSvg import *
except:
pass
else:
if sys.version < "3.0.0":
try:
import sip
sip.setapi("QString", 2)
sip.setapi("QVariant", 2)
except:
print("Cannot set sip API") # Console widget not available
try:
from PyQt4.QtCore import *
from PyQt4.QtGui import *
try:
from PyQt4.QtOpenGL import *
except:
pass
try:
from PyQt4.QtSvg import *
except:
pass
except ImportError:
try:
# try PySide
from PySide.QtCore import *
from PySide.QtGui import *
try:
from PySide.QtSvg import *
except:
pass
try:
from PySide.QtOpenGL import *
except:
pass
pyqtSignal = Signal
#matplotlib has difficulties to identify PySide
try:
import matplotlib
matplotlib.rcParams['backend.qt4']='PySide'
except:
pass
except ImportError:
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtPrintSupport import *
try:
from PyQt5.QtOpenGL import *
except:
pass
try:
from PyQt5.QtSvg import *
except:
pass
# provide a exception handler but not implement it by default
def exceptionHandler(type_, value, trace):
print("%s %s %s" % (type_, value, ''.join(traceback.format_tb(trace))))
msg = QMessageBox()
msg.setWindowTitle("Unhandled exception")
msg.setIcon(QMessageBox.Critical)
msg.setInformativeText("%s %s\nPlease report details" % (type_, value))
msg.setDetailedText(("%s " % value) + ''.join(traceback.format_tb(trace)))
msg.raise_()
msg.exec_()
# Overwrite the QFileDialog to make sure that by default it
# returns non-native dialogs as it was the traditional behavior of Qt
_QFileDialog = QFileDialog
class QFileDialog(_QFileDialog):
def __init__(self, *args, **kwargs):
try:
_QFileDialog.__init__(self, *args, **kwargs)
except:
# not all versions support kwargs
_QFileDialog.__init__(self, *args)
try:
self.setOptions(_QFileDialog.DontUseNativeDialog)
except:
print("WARNING: Cannot force default QFileDialog behavior")
class HorizontalSpacer(QWidget):
def __init__(self, *args):
QWidget.__init__(self, *args)
self.setSizePolicy(QSizePolicy(QSizePolicy.Expanding,
QSizePolicy.Fixed))
class VerticalSpacer(QWidget):
def __init__(self, *args):
QWidget.__init__(self, *args)
self.setSizePolicy(QSizePolicy(QSizePolicy.Fixed,
QSizePolicy.Expanding))
if sys.version < '3.0':
import types
# perhaps a better name would be safe unicode?
# should this method be a more generic tool to
# be found outside PyMcaQt?
def safe_str(potentialQString):
if type(potentialQString) == types.StringType or\
type(potentialQString) == types.UnicodeType:
return potentialQString
try:
# default, just str
x = str(potentialQString)
except UnicodeEncodeError:
# try user OS file system encoding
# expected to be 'mbcs' under windows
# and 'utf-8' under MacOS X
try:
x = unicode(potentialQString, sys.getfilesystemencoding())
return x
except:
# on any error just keep going
pass
# reasonable tries are 'utf-8' and 'latin-1'
# should I really go beyond those?
# In fact, 'utf-8' is the default file encoding for python 3
encodingOptions = ['utf-8', 'latin-1', 'utf-16', 'utf-32']
for encodingOption in encodingOptions:
try:
x = unicode(potentialQString, encodingOption)
break
except UnicodeDecodeError:
if encodingOption == encodingOptions[-1]:
raise
return x
else:
safe_str = str
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