# -*-python-*-
#-------------------------------------------------------------------------------
#
#   OpenAlea.SConsX: SCons extension package for building platform
#                    independant packages.
#
#   Copyright 2006-2009 INRIA - CIRAD - INRA
#
#   File author(s): Christophe Pradal <christophe.prada@cirad.fr>
#
#   Distributed under the Cecill-C License.
#   See accompanying file LICENSE.txt or copy at
#       http://www.cecill.info/licences/Licence_CeCILL-C_V1-en.html
#
#   OpenAlea WebSite : http://openalea.gforge.inria.fr
#
#-------------------------------------------------------------------------------
""" QT configure environment. """

__license__ = "Cecill-C"
__revision__ = "$Id$"

import os
import sys
from openalea.sconsx.config import platform, Win32, Posix, exist
from SCons.Tool import Tool


pj = os.path.join
exists = os.path.exists


class QT:

    def __init__(self, config):
        self.name = 'qt'
        self.config = config
        self._default = {}

    def default(self):

        qt_dir = os.getenv("QTDIR")
        qt_lib = '$QTDIR/lib'
        qt_bin = '$QTDIR/bin'
        qt_inc = '$QTDIR/include'

        if not qt_dir:
            if isinstance(platform, Win32):
                qt_dir = pj('C:', 'QT')
            elif isinstance(platform, Posix):
                qt_dir = pj('/usr', 'lib', 'qt3')
                if not exists(pj(qt_dir, 'bin')):
                    # Use LSB spec
                    qt_dir = '/usr'
                    qt_bin = '/usr/bin'
                    qt_inc = '/usr/include/qt3'
                    qt_lib = '/usr/lib'

        self._default["QTDIR"] = qt_dir
        self._default["QT_BINPATH"] = qt_bin
        self._default["QT_CPPPATH"] = qt_inc
        self._default["QT_LIBPATH"] = qt_lib

    def option(self, opts):

        self.default()

        opts.Add(('QTDIR', 'QT directory',
                  self._default['QTDIR']))
        opts.Add(('QT_BINPATH', 'QT binaries path.',
                  self._default['QT_BINPATH']))
        opts.Add(('QT_CPPPATH', 'QT includes path.',
                  self._default['QT_CPPPATH']))
        opts.Add(('QT_LIBPATH', 'QT lib path.',
                  self._default['QT_LIBPATH']))

    def update(self, env):
        """ Update the environment with specific flags """

        t = Tool('qt')
        t(env)

        if isinstance(platform, Win32):
            qt_lib = 'qt-mtnc321'
        else:
            qt_lib = 'qt-mt'

        libpath = str(env.subst(env['QT_LIBPATH']))
        multithread = exist(qt_lib, libpath)
        if multithread:
            env.AppendUnique(CPPDEFINES=['QT_THREAD_SUPPORT'])
            env.Replace(QT_LIB=qt_lib)

        if isinstance(platform, Win32):
            env.AppendUnique(CPPDEFINES=['QT_DLL'])

    def configure(self, config):
        if not config.conf.CheckLibWithHeader('qt-mt',
                                              ['qapplication.h', 'qgl.h', 'qthread.h'],
                                              'c++',
                                              'QApplication qapp(0,0);', autoadd=0):

            print("""Error: QT not found ! 
                  Please, install QT and try again.""")
            sys.exit(-1)


def create(config):
    " Create qt tool "
    qt = QT(config)

    return qt