# -------------------------------------------------------------------------
#
#  Copyright (c) 2007, Enthought, Inc.
#  All rights reserved.
#
#  This software is provided without warranty under the terms of the BSD
#  license included in LICENSE.txt and may be redistributed only
#  under the conditions described in the aforementioned license.  The license
#  is also available online at http://www.enthought.com/licenses/BSD.txt
#
#  Thanks for using Enthought open source!
#
#  Author: David C. Morrill
#  Date:   06/05/2007
#
# -------------------------------------------------------------------------

""" Traits UI 'display only' image editor.
"""



from pyface.ui_traits import Image
from traits.api import Bool, Property

from ..basic_editor_factory import BasicEditorFactory

from ..toolkit import toolkit_object

# -------------------------------------------------------------------------
#  'ImageEditor' editor factory class:
# -------------------------------------------------------------------------


class ImageEditor(BasicEditorFactory):

    #: The editor class to be created:
    klass = Property()

    #: The optional image resource to be displayed by the editor (if not
    #: specified, the editor's object value is used as the ImageResource to
    #: display):
    image = Image

    #: The following traits are currently supported on Qt only

    #: Whether or not to scale the image to fit the available space
    scale = Bool()

    #: Whether or not to scale the image larger than the original when scaling
    allow_upscaling = Bool()

    #: Whether or not to preserve the aspect ratio when scaling
    preserve_aspect_ratio = Bool()

    #: Whether or not to allow the image to be clipped when not scaling
    allow_clipping = Bool()

    def _get_klass(self):
        """ Returns the editor class to be instantiated.
        """
        return toolkit_object("image_editor:_ImageEditor")
