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Diffstat (limited to 'silx/gui/utils/matplotlib.py')
-rw-r--r-- | silx/gui/utils/matplotlib.py | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/silx/gui/utils/matplotlib.py b/silx/gui/utils/matplotlib.py new file mode 100644 index 0000000..484e01a --- /dev/null +++ b/silx/gui/utils/matplotlib.py @@ -0,0 +1,71 @@ +# coding: utf-8 +# /*########################################################################## +# +# Copyright (c) 2016-2020 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. +# +# ###########################################################################*/ + +from __future__ import absolute_import + +"""This module initializes matplotlib and sets-up 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__ = "02/05/2018" + + +from pkg_resources import parse_version +import matplotlib + +from .. import qt + + +def _matplotlib_use(backend, force): + """Wrapper of `matplotlib.use` to set-up backend. + + It adds extra initialization for PySide and PySide2 with matplotlib < 2.2. + """ + # This is kept for compatibility with matplotlib < 2.2 + if parse_version(matplotlib.__version__) < parse_version('2.2'): + if qt.BINDING == 'PySide': + matplotlib.rcParams['backend.qt4'] = 'PySide' + if qt.BINDING == 'PySide2': + matplotlib.rcParams['backend.qt5'] = 'PySide2' + + matplotlib.use(backend, force=force) + + +if qt.BINDING in ('PyQt4', 'PySide'): + _matplotlib_use('Qt4Agg', force=False) + from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg # noqa + +elif qt.BINDING in ('PyQt5', 'PySide2'): + _matplotlib_use('Qt5Agg', force=False) + from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg # noqa + +else: + raise ImportError("Unsupported Qt binding: %s" % qt.BINDING) |