How to use the enaml.qt.docking.q_guide_rose.QGuideRose.Guide function in enaml

_guides = Value(factory=lambda: {
        QGuideRose.Guide.CompassNorth: GuideImage('arrow_north'),
        QGuideRose.Guide.CompassEast: GuideImage('arrow_east'),
        QGuideRose.Guide.CompassSouth: GuideImage('arrow_south'),
        QGuideRose.Guide.CompassWest: GuideImage('arrow_west'),
        QGuideRose.Guide.CompassCenter: GuideImage('center'),
    })

Instances of this class should be used once and discarded.

    """
    BAR_POSITIONS = {
        'top': QDockBar.North,
        'right': QDockBar.East,
        'bottom': QDockBar.South,
        'left': QDockBar.West,
    }

    BORDER_GUIDES = {
        'top': QGuideRose.Guide.BorderNorth,
        'right': QGuideRose.Guide.BorderEast,
        'bottom': QGuideRose.Guide.BorderSouth,
        'left': QGuideRose.Guide.BorderWest,
    }

    ITEM_GUIDES = {
        'top': QGuideRose.Guide.CompassNorth,
        'right': QGuideRose.Guide.CompassEast,
        'bottom': QGuideRose.Guide.CompassSouth,
        'left': QGuideRose.Guide.CompassWest,
    }

    TAB_GUIDES = {
        'default': QGuideRose.Guide.CompassCenter,
        'top': QGuideRose.Guide.CompassExNorth,
        'right': QGuideRose.Guide.CompassExEast,
        'bottom': QGuideRose.Guide.CompassExSouth,
        'left': QGuideRose.Guide.CompassExWest,
    }

def layout(self, pos):
        """ Layout the guides for the extended compass.

        Parameters
        ----------
        pos : QPoint
            The center point of the compass.

        """
        x = pos.x()
        y = pos.y()
        Guide = QGuideRose.Guide
        guides = self._guides
        guides[Guide.CompassNorth].rect = QRect(x - 15, y - 64, 31, 31)
        guides[Guide.CompassEast].rect = QRect(x + 34, y - 15, 31, 31)
        guides[Guide.CompassSouth].rect = QRect(x - 15, y + 34, 31, 31)
        guides[Guide.CompassWest].rect = QRect(x - 64, y - 15, 31, 31)
        guides[Guide.CompassCenter].rect = QRect(x - 15, y - 15, 31, 31)
        guides[Guide.CompassExNorth].rect = QRect(x - 15, y - 29, 31, 10)
        guides[Guide.CompassExEast].rect = QRect(x + 20, y - 15, 10, 31)
        guides[Guide.CompassExSouth].rect = QRect(x - 15, y + 20, 31, 10)
        guides[Guide.CompassExWest].rect = QRect(x - 29, y - 15, 10, 31)
        self._box.rect = QRect(x - 69, y - 69, 139, 139)

_guides = Value(factory=lambda: {
        QGuideRose.Guide.BorderNorth: GuideImage('thin_horizontal'),
        QGuideRose.Guide.BorderExNorth: GuideImage('bar_horizontal'),
        QGuideRose.Guide.BorderEast: GuideImage('thin_vertical'),
        QGuideRose.Guide.BorderExEast: GuideImage('bar_vertical'),
        QGuideRose.Guide.BorderSouth: GuideImage('thin_horizontal'),
        QGuideRose.Guide.BorderExSouth: GuideImage('bar_horizontal'),
        QGuideRose.Guide.BorderWest: GuideImage('thin_vertical'),
        QGuideRose.Guide.BorderExWest: GuideImage('bar_vertical'),
    })

guides[Guide.CompassEast].rect = QRect(x + 34, y - 15, 31, 31)
        guides[Guide.CompassSouth].rect = QRect(x - 15, y + 34, 31, 31)
        guides[Guide.CompassWest].rect = QRect(x - 64, y - 15, 31, 31)
        guides[Guide.CompassCenter].rect = QRect(x - 15, y - 15, 31, 31)
        guides[Guide.CompassExNorth].rect = QRect(x - 15, y - 29, 31, 10)
        guides[Guide.CompassExEast].rect = QRect(x + 20, y - 15, 10, 31)
        guides[Guide.CompassExSouth].rect = QRect(x - 15, y + 20, 31, 10)
        guides[Guide.CompassExWest].rect = QRect(x - 29, y - 15, 10, 31)
        self._box.rect = QRect(x - 69, y - 69, 139, 139)


class SingleGuide(GuideHandler):
    """ A base class for defining a single guide.

    """
    guide_enum = Int(QGuideRose.Guide.NoGuide)

    image_name = Str('')

    _box = Value(factory=lambda: GuideImage('guide_box'))

    _guide = Typed(GuideImage)

    def _default__guide(self):
        """ The default value handler for the '_guide' attribute.

        """
        return GuideImage(self.image_name)

    def iterguides(self):
        """ Iterate the guides for the compass.

_guides = Value(factory=lambda: {
        QGuideRose.Guide.CompassNorth: GuideImage('arrow_north'),
        QGuideRose.Guide.CompassEast: GuideImage('arrow_east'),
        QGuideRose.Guide.CompassSouth: GuideImage('arrow_south'),
        QGuideRose.Guide.CompassWest: GuideImage('arrow_west'),
        QGuideRose.Guide.CompassCenter: GuideImage('center'),
    })

class SplitHorizontalGuide(SingleGuide):
    """ A single guide which uses the horizontal split image.

    """
    guide_enum = set_default(QGuideRose.Guide.SplitHorizontal)

    image_name = set_default('split_horizontal')


class SplitVerticalGuide(SingleGuide):
    """ A single guide which uses the vertical split image.

    """
    guide_enum = set_default(QGuideRose.Guide.SplitVertical)

    image_name = set_default('split_vertical')


class AreaCenterGuide(SingleGuide):
    """ A single guide which uses the area center image.

    """
    guide_enum = set_default(QGuideRose.Guide.AreaCenter)

    image_name = set_default('center')

Parameters
        ----------
        pos : QPoint
            The point of interest, expressed in layout coordinates.

        Returns
        -------
        result : Guide
            The enum value for the guide at the given position.

        """
        for enum, guide in self.iterguides():
            if guide.contains(pos):
                return enum
        return QGuideRose.Guide.NoGuide

_boxes = Value(factory=lambda: {
        QGuideRose.Guide.BorderNorth: GuideImage('guide_box'),
        QGuideRose.Guide.BorderEast: GuideImage('guide_box'),
        QGuideRose.Guide.BorderSouth: GuideImage('guide_box'),
        QGuideRose.Guide.BorderWest: GuideImage('guide_box'),
    })

_guides = Value(factory=lambda: {
        QGuideRose.Guide.CompassNorth: GuideImage('arrow_north'),
        QGuideRose.Guide.CompassEast: GuideImage('arrow_east'),
        QGuideRose.Guide.CompassSouth: GuideImage('arrow_south'),
        QGuideRose.Guide.CompassWest: GuideImage('arrow_west'),
        QGuideRose.Guide.CompassCenter: GuideImage('center'),
        QGuideRose.Guide.CompassExNorth: GuideImage('bar_horizontal'),
        QGuideRose.Guide.CompassExEast: GuideImage('bar_vertical'),
        QGuideRose.Guide.CompassExSouth: GuideImage('bar_horizontal'),
        QGuideRose.Guide.CompassExWest: GuideImage('bar_vertical'),
    })