# Source code for taurus.qt.qtcore.util.tauruslog

    #!/usr/bin/env python

    # ###########################################################################
    #
    # This file is part of Taurus
    #
    # http://taurus-scada.org
    #
    # Copyright 2011 CELLS / ALBA Synchrotron, Bellaterra, Spain
    #
    # Taurus is free software: you can redistribute it and/or modify
    # it under the terms of the GNU Lesser General Public License as published by
    # the Free Software Foundation, either version 3 of the License, or
    # (at your option) any later version.
    #
    # Taurus is distributed in the hope that it will be useful,
    # but WITHOUT ANY WARRANTY; without even the implied warranty of
    # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    # GNU Lesser General Public License for more details.
    #
    # You should have received a copy of the GNU Lesser General Public License
    # along with Taurus.  If not, see <http://www.gnu.org/licenses/>.
    #
    # ###########################################################################

    """This module sets the taurus.core.util.log.Logger to be the Qt message
    handler """

    __docformat__ = "restructuredtext"

    from taurus.external.qt import Qt
    from taurus import Logger

    qtLogger = None

    QT_LEVEL_MATCHER = {
        Qt.QtDebugMsg: Logger.debug,
        Qt.QtWarningMsg: Logger.warning,
        Qt.QtCriticalMsg: Logger.error,
        Qt.QtFatalMsg: Logger.error,
        Qt.QtSystemMsg: Logger.info,
    }

    def getQtLogger():
        global qtLogger
        if qtLogger is None:
            qtLogger = Logger("QtLogger")
        return qtLogger

    def qtTaurusMessageHandler(msg_type, log_ctx, msg):
        # Qt5 version
        global qtLogger
        if qtLogger is not None:
            caller = QT_LEVEL_MATCHER.get(msg_type)
            return caller(
                "Qt%s %s.%s[%s]: %a",
                log_ctx.category,
                log_ctx.file,
                log_ctx.function,
                log_ctx.line,
                msg,
            )

    def initTaurusQtLogger():
        global qtLogger
        if not qtLogger:
            if hasattr(Qt, "qInstallMessageHandler"):
                # Qt5
                Qt.qInstallMessageHandler(qtTaurusMessageHandler)