File: svg_button_editor.py

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#------------------------------------------------------------------------------
#
#  Copyright (c) 2009, Enthought, Inc.
#  All rights reserved.
#
#  This software is provided without warranty under the terms of the BSD
#  license included in enthought/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!
#
#------------------------------------------------------------------------------

""" Traits UI button editor for SVG images.
"""

#-------------------------------------------------------------------------------
#  Imports:
#-------------------------------------------------------------------------------

from enable.savage.trait_defs.ui.toolkit import toolkit_object

from traits.api import Bool, Enum, Int, Property, Range, Str, Any

from traitsui.api import View
from traitsui.basic_editor_factory import BasicEditorFactory
from traitsui.ui_traits import AView

#-------------------------------------------------------------------------------
#  'SVGEditor' editor factory class:
#-------------------------------------------------------------------------------

class SVGButtonEditor(BasicEditorFactory):

    # The editor class to be created
    klass = Property

    # Value to set when the button is clicked
    value = Property

    label = Str

    filename = Str

    # Extra padding to add to both the left and the right sides
    width_padding = Range( 0, 31, 3 )

    # Extra padding to add to both the top and the bottom sides
    height_padding = Range( 0, 31, 3 )

    # Presentation style
    style = Enum( 'button', 'radio', 'toolbar', 'checkbox' )

    # Orientation of the text relative to the image
    orientation = Enum( 'vertical', 'horizontal' )

    # The optional view to display when the button is clicked:
    view = AView

    width = Int(32)
    height = Int(32)

    tooltip = Str

    toggle = Bool(True)

    # the toggle state displayed
    toggle_state = Bool(False)

    # a file holding the image to display when toggled
    toggle_filename = Any

    toggle_label = Str

    toggle_tooltip = Str

    traits_view = View( [ 'value', '|[]' ] )

    #---------------------------------------------------------------------------
    #  object API
    #---------------------------------------------------------------------------

    def __init__ ( self, **traits ):
        self._value = 0
        super( SVGButtonEditor, self ).__init__( **traits)

    #---------------------------------------------------------------------------
    #  Traits properties
    #---------------------------------------------------------------------------

    def _get_klass(self):
        """ Returns the toolkit-specific editor class to be instantiated.
        """
        return toolkit_object('svg_button_editor:SVGButtonEditor')

    def _get_value ( self ):
        return self._value

    def _set_value ( self, value ):
        self._value = value
        if isinstance(value, basestring):
            try:
                self._value = int( value )
            except:
                try:
                    self._value = float( value )
                except:
                    pass