def qapplication():
"""Either return a reference to an existing application instance
or create a new one
:return: A reference to the QApplication object
"""
app = QApplication.instance()
if app is None:
# attributes that must be set before creating QApplication
QCoreApplication.setAttribute(Qt.AA_ShareOpenGLContexts)
argv = sys.argv[:]
argv[0] = APPNAME # replace application name
# Workaround a segfault importing readline with PyQt5
# This is because PyQt5 messes up pystate (internal) modules_by_index
# so PyState_FindModule will return null instead of the module address.
# Readline (so far) is the only module that falls over during init as it blindly uses FindModules result
# The workaround mentioned in https://groups.google.com/forum/#!topic/leo-editor/ghiIN7irzY0
if sys.platform == "linux" or sys.platform == "linux2" or sys.platform == "darwin":
importlib.import_module("readline")
app = QApplication(argv)
app.setOrganizationName(ORGANIZATION)
app.setOrganizationDomain(ORG_DOMAIN)
app.setApplicationName(APPNAME)
app.setApplicationVersion(mantid_version_str())
# Spin up the usage service and set the name for the usage reporting
# The report is sent when the FrameworkManager kicks up
UsageService.setApplicationName(APPNAME)
app.setAttribute(Qt.AA_UseHighDpiPixmaps)
if hasattr(Qt, 'AA_DisableWindowContextHelpButton'):
app.setAttribute(Qt.AA_DisableWindowContextHelpButton)
return app
def qapplication():
"""Either return a reference to an existing application instance
or create a new one
:return: A reference to the QApplication object
"""
app = QApplication.instance()
if app is None:
QCoreApplication.setAttribute(Qt.AA_ShareOpenGLContexts)
argv = sys.argv[:]
argv[0] = APPNAME # replace application name
# Workaround a segfault with the IPython console when using Python 3.5 + PyQt 5
# Without this using this fix the above combination causes a segfault when the IPython
# console is started
# The workaround mentioned in https://groups.google.com/forum/#!topic/leo-editor/ghiIN7irzY0
# is to ensure readline is imported before the QApplication object is created
if sys.version_info[0] == 3 and sys.version_info[1] == 5:
importlib.import_module("readline")
app = QApplication(argv)
app.setOrganizationName(ORGANIZATION)
app.setOrganizationDomain(ORG_DOMAIN)
app.setApplicationName(APPNAME)
app.setApplicationVersion(mantid_version_str())
# Spin up the usage service and set the name for the usage reporting
# The report is sent when the FrameworkManager kicks up
UsageService.setApplicationName(APPNAME)
if is_required_version(required_version='5.10.0', version=qVersion()):
app.setAttribute(Qt.AA_DisableWindowContextHelpButton)
return app
def qapplication():
"""Either return a reference to an existing application instance
or create a new one
:return: A reference to the QApplication object
"""
app = QApplication.instance()
if app is None:
QCoreApplication.setAttribute(Qt.AA_ShareOpenGLContexts)
argv = sys.argv[:]
argv[0] = APPNAME # replace application name
# Workaround a segfault with the IPython console when using Python 3.5 + PyQt 5
# Without this using this fix the above combination causes a segfault when the IPython
# console is started
# The workaround mentioned in https://groups.google.com/forum/#!topic/leo-editor/ghiIN7irzY0
# is to ensure readline is imported before the QApplication object is created
if sys.version_info[0] == 3 and sys.version_info[1] == 5:
importlib.import_module("readline")
app = QApplication(argv)
app.setOrganizationName(ORGANIZATION)
app.setOrganizationDomain(ORG_DOMAIN)
app.setApplicationName(APPNAME)
app.setApplicationVersion(mantid_version_str())
# Spin up the usage service and set the name for the usage reporting
# The report is sent when the FrameworkManager kicks up
UsageService.setApplicationName(APPNAME)
return app
