text: # 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.
  #
  # ###########################################################################*/
  
  """This module inits matplotlib and setups the backend to use.
  
  It MUST be imported prior to any other import of matplotlib.
  
  It provides the matplotlib :class:`FigureCanvasQTAgg` class corresponding
  to the used backend.
  """
  
  __authors__ = ["T. Vincent"]
  __license__ = "MIT"
  __date__ = "16/10/2020"
  
  import sys
  import logging
  
  _logger = logging.getLogger(__name__)
  
  _check_matplotlib = 'matplotlib' in sys.modules
  
  from silx.gui import qt
  
  import matplotlib
  
  
  def _configure(backend, backend_qt4=None, check=False):
      if check:
          valid = matplotlib.rcParams['backend'] == backend
          if backend_qt4 is not None:
              valid = valid and matplotlib.rcParams['backend.qt4'] == backend_qt4
  
          if not valid:
              _logger.warning('matplotlib already loaded, setting its backend may not work')
          return
      matplotlib.rcParams['backend'] = backend
      if backend_qt4 is not None:
          matplotlib.rcParams['backend.qt4'] = backend_qt4
  
  
  if qt.BINDING == 'PySide':
      _configure('Qt4Agg', 'PySide', check=_check_matplotlib)
      from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg  # noqa
  
  elif qt.BINDING == 'PyQt4':
      _configure('Qt4Agg', check=_check_matplotlib)
      from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg  # noqa
  
  elif qt.BINDING == 'PyQt5':
      _configure('Qt5Agg', check=_check_matplotlib)
      from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg  # noqa
  
  from matplotlib import pyplot  # noqa
  from matplotlib import pylab  # noqa
  