# coding: utf-8
# /*##########################################################################
#
# Copyright (c) 2014-2019 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.
#
# ###########################################################################*/
"""Abstraction of OpenGL context.

It defines a way to get current OpenGL context to support multiple
OpenGL contexts.
"""

__authors__ = ["<NAME>"]
__license__ = "MIT"
__date__ = "25/07/2016"

import contextlib


class _DEFAULT_CONTEXT(object):
    """The default value for OpenGL context"""
    pass

_context = _DEFAULT_CONTEXT
"""The current OpenGL context"""


def getCurrent():
    """Returns platform dependent object of current OpenGL context.

    This is useful to associate OpenGL resources with the context they are
    created in.

    :return: Platform specific OpenGL context
    """
    return _context


def setCurrent(context=_DEFAULT_CONTEXT):
    """Set a platform dependent OpenGL context

    :param context: Platform dependent GL context
    """
    global _context
    _context = context


@contextlib.contextmanager
def current(context):
    """Context manager setting the platform-dependent GL context

    :param context: Platform dependent GL context
    """
    previous_context = getCurrent()
    setCurrent(context)
    yield
    setCurrent(previous_context)

# coding: utf-8
# /*##########################################################################
#
# Copyright (c) 2014-2019 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.
#
# ###########################################################################*/
"""Abstraction of OpenGL context.

It defines a way to get current OpenGL context to support multiple
OpenGL contexts.
"""

__authors__ = ["<NAME>"]
__license__ = "MIT"
__date__ = "25/07/2016"

import contextlib


class _DEFAULT_CONTEXT(object):
    """The default value for OpenGL context"""
    pass

_context = _DEFAULT_CONTEXT
"""The current OpenGL context"""


def getCurrent():
    """Returns platform dependent object of current OpenGL context.

    This is useful to associate OpenGL resources with the context they are
    created in.

    :return: Platform specific OpenGL context
    """
    return _context


def setCurrent(context=_DEFAULT_CONTEXT):
    """Set a platform dependent OpenGL context

    :param context: Platform dependent GL context
    """
    global _context
    _context = context


@contextlib.contextmanager
def current(context):
    """Context manager setting the platform-dependent GL context

    :param context: Platform dependent GL context
    """
    previous_context = getCurrent()
    setCurrent(context)
    yield
    setCurrent(previous_context)

# coding: utf-8 # /*########################################################################## # # Copyright (c) 2014-2019 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. # # ###########################################################################*/ Abstraction of OpenGL context.  It defines a way to get current OpenGL context to support multiple OpenGL contexts. The default value for OpenGL context The current OpenGL context Returns platform dependent object of current OpenGL context.      This is useful to associate OpenGL resources with the context they are     created in.      :return: Platform specific OpenGL context Set a platform dependent OpenGL context      :param context: Platform dependent GL context Context manager setting the platform-dependent GL context      :param context: Platform dependent GL context