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authorAlexandre Marie <alexandre.marie@synchrotron-soleil.fr>2019-07-09 10:20:20 +0200
committerAlexandre Marie <alexandre.marie@synchrotron-soleil.fr>2019-07-09 10:20:20 +0200
commit654a6ac93513c3cc1ef97cacd782ff674c6f4559 (patch)
tree3b986e4972de7c57fa465820367602fc34bcb0d3 /silx/gui/_glutils/Context.py
parenta763e5d1b3921b3194f3d4e94ab9de3fbe08bbdd (diff)
New upstream version 0.11.0+dfsg
Diffstat (limited to 'silx/gui/_glutils/Context.py')
-rw-r--r--silx/gui/_glutils/Context.py42
1 files changed, 27 insertions, 15 deletions
diff --git a/silx/gui/_glutils/Context.py b/silx/gui/_glutils/Context.py
index 7600992..c62dbb9 100644
--- a/silx/gui/_glutils/Context.py
+++ b/silx/gui/_glutils/Context.py
@@ -1,7 +1,7 @@
# coding: utf-8
# /*##########################################################################
#
-# Copyright (c) 2014-2017 European Synchrotron Radiation Facility
+# 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
@@ -32,32 +32,44 @@ __authors__ = ["T. Vincent"]
__license__ = "MIT"
__date__ = "25/07/2016"
+import contextlib
-# context #####################################################################
+class _DEFAULT_CONTEXT(object):
+ """The default value for OpenGL context"""
+ pass
-def _defaultGLContextGetter():
- return None
+_context = _DEFAULT_CONTEXT
+"""The current OpenGL context"""
-_glContextGetter = _defaultGLContextGetter
-
-def getGLContext():
+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
- :rtype: None by default or a platform dependent object"""
- return _glContextGetter()
+ """
+ return _context
+
+
+def setCurrent(context=_DEFAULT_CONTEXT):
+ """Set a platform dependent OpenGL context
+
+ :param context: Platform dependent GL context
+ """
+ global _context
+ _context = context
-def setGLContextGetter(getter=_defaultGLContextGetter):
- """Set a platform dependent function to retrieve the current OpenGL context
+@contextlib.contextmanager
+def current(context):
+ """Context manager setting the platform-dependent GL context
- :param getter: Platform dependent GL context getter
- :type getter: Function with no args returning the current OpenGL context
+ :param context: Platform dependent GL context
"""
- global _glContextGetter
- _glContextGetter = getter
+ previous_context = getCurrent()
+ setCurrent(context)
+ yield
+ setCurrent(previous_context)