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#------------------------------------------------------------------------------
# Copyright (c) 2005, 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!
#
# Author: David C. Morrill
# Date: 12/02/2004
# Description: Define the Tkinter implementation of the various image
# enumeration editors and the image enumeration editor factory.
#
# Symbols defined: ToolkitEditorFactory
#
#------------------------------------------------------------------------------
#-------------------------------------------------------------------------------
# Imports:
#-------------------------------------------------------------------------------
import sys
import tk
from os import getcwd
from os.path import join, dirname, exists
from enum_editor import ToolkitEditorFactory as EditorFactory
from editor import Editor
from helper import bitmap_cache, position_near
from image_control import ImageControl
from enthought.traits.api import Str, Type, Module, Any
#-------------------------------------------------------------------------------
# 'ToolkitEditorFactory' class:
#-------------------------------------------------------------------------------
class ToolkitEditorFactory ( EditorFactory ):
#---------------------------------------------------------------------------
# Trait definitions:
#---------------------------------------------------------------------------
suffix = Str # Suffix to add to values to form image names
path = Str # Path to use to locate image files
klass = Type # Class used to derive the path to the image files
module = Module # Module used to derive the path to the image files
#---------------------------------------------------------------------------
# Performs any initialization needed after all constructor traits have
# been set:
#---------------------------------------------------------------------------
def init ( self ):
""" Performs any initialization needed after all constructor traits
have been set.
"""
super( ToolkitEditorFactory, self ).init()
self._update_path()
#---------------------------------------------------------------------------
# Handles one of the items defining the path being updated:
#---------------------------------------------------------------------------
def _update_path ( self ):
""" Handles one of the items defining the path being updated.
"""
if self.path != '':
self._image_path = self.path
elif self.klass is not None:
if self.klass.__module__ == '__main__':
dirs = [ join( dirname( sys.argv[0] ), 'images' ),
join( getcwd(), 'images' ) ]
self._image_path = self.path
for d in dirs:
if exists( d ):
self._image_path = d
break
else:
self._image_path = join( dirname( sys.modules[
self.klass.__module__ ].__file__ ), 'images' )
elif self.module is not None:
self._image_path = join( dirname( self.module.__file__ ), 'images' )
def _path_changed ( self ):
self._update_path()
def _klass_changed ( self ):
self._update_path()
def _module_changed ( self ):
self._update_path()
#---------------------------------------------------------------------------
# 'Editor' factory methods:
#---------------------------------------------------------------------------
def simple_editor ( self, ui, object, name, description, parent ):
return SimpleEditor( parent,
factory = self,
ui = ui,
object = object,
name = name,
description = description )
def custom_editor ( self, ui, object, name, description, parent ):
return CustomEditor( parent,
factory = self,
ui = ui,
object = object,
name = name,
description = description )
def readonly_editor ( self, ui, object, name, description, parent ):
return ReadonlyEditor( parent,
factory = self,
ui = ui,
object = object,
name = name,
description = description )
#-------------------------------------------------------------------------------
# 'ReadonlyEditor' class:
#-------------------------------------------------------------------------------
class ReadonlyEditor ( Editor ):
#---------------------------------------------------------------------------
# Finishes initializing the editor by creating the underlying toolkit
# widget:
#---------------------------------------------------------------------------
def init ( self, parent ):
""" Finishes initializing the editor by creating the underlying toolkit
widget.
"""
self.control = ImageControl( parent,
bitmap_cache( self.str_value + self.factory.suffix,
False, self.factory._image_path ) )
#---------------------------------------------------------------------------
# Updates the editor when the object trait changes external to the editor:
#---------------------------------------------------------------------------
def update_editor ( self ):
""" Updates the editor when the object trait changes external to the
editor.
"""
self.control.Bitmap( bitmap_cache( self.str_value + self.factory.suffix,
False, self.factory._image_path ) )
#-------------------------------------------------------------------------------
# 'SimpleEditor' class:
#-------------------------------------------------------------------------------
class SimpleEditor ( ReadonlyEditor ):
#---------------------------------------------------------------------------
# Finishes initializing the editor by creating the underlying toolkit
# widget:
#---------------------------------------------------------------------------
def init ( self, parent ):
""" Finishes initializing the editor by creating the underlying toolkit
widget.
"""
super( SimpleEditor, self ).init( parent )
self.control.Selected( True )
self.control.Handler( self.popup_editor )
#---------------------------------------------------------------------------
# Handles the user clicking the ImageControl to display the pop-up dialog:
#---------------------------------------------------------------------------
def popup_editor ( self, control ):
""" Handles the user clicking the ImageControl to display the pop-up
dialog.
"""
ImageEnumDialog( self )
#-------------------------------------------------------------------------------
# 'CustomEditor' class:
#-------------------------------------------------------------------------------
class CustomEditor ( Editor ):
#---------------------------------------------------------------------------
# Trait definitions:
#---------------------------------------------------------------------------
update_handler = Any # Callback to call when any button clicked
#---------------------------------------------------------------------------
# Finishes initializing the editor by creating the underlying toolkit
# widget:
#---------------------------------------------------------------------------
def init ( self, parent ):
""" Finishes initializing the editor by creating the underlying toolkit
widget.
"""
self._create_image_grid( parent )
#---------------------------------------------------------------------------
# Populates a specified window with a grid of image buttons:
#---------------------------------------------------------------------------
def _create_image_grid ( self, parent ):
""" Populates a specified window with a grid of image buttons.
"""
# Create the panel to hold the ImageControl buttons:
self.control = panel = wx.Panel( parent, -1 )
# Create the main sizer:
if self.factory.cols > 1:
sizer = wx.GridSizer( 0, self.factory.cols, 0, 0 )
else:
sizer = wx.BoxSizer( wx.VERTICAL )
# Add the set of all possible choices:
cur_value = self.str_value
for value in self.factory._names:
control = ImageControl( panel,
bitmap_cache( value + self.factory.suffix, False,
self.factory._image_path ),
value == cur_value,
self.update_object )
control.value = value
sizer.Add( control, 0, wx.ALL, 2 )
self.set_tooltip( control )
# Finish setting up the control layout:
panel.SetAutoLayout( True )
panel.SetSizer( sizer )
sizer.Fit( panel )
#---------------------------------------------------------------------------
# Handles the user clicking on an ImageControl to set an object value:
#---------------------------------------------------------------------------
def update_object ( self, control ):
""" Handles the user clicking on an ImageControl to set an object value.
"""
self.value = control.value
if self.update_handler is not None:
self.update_handler()
#---------------------------------------------------------------------------
# Updates the editor when the object trait changes external to the editor:
#---------------------------------------------------------------------------
def update_editor ( self ):
""" Updates the editor when the object trait changes external to the
editor.
"""
value = self.str_value
for control in self.control.GetChildren():
control.Selected( value == control.value )
#-------------------------------------------------------------------------------
# 'ImageEnumDialog' class:
#-------------------------------------------------------------------------------
class ImageEnumDialog ( wx.Frame ):
#---------------------------------------------------------------------------
# Initializes the object:
#---------------------------------------------------------------------------
def __init__ ( self, editor ):
""" Initializes the object.
"""
wx.Frame.__init__( self, editor.control, -1, '',
style = wx.SIMPLE_BORDER )
wx.EVT_ACTIVATE( self, self._on_close_dialog )
self._closed = False
dlg_editor = CustomEditor( self,
factory = editor.factory,
ui = editor.ui,
object = editor.object,
name = editor.name,
description = editor.description,
update_handler = self._close_dialog )
# Wrap the dialog around the image button panel:
sizer = wx.BoxSizer( wx.VERTICAL )
sizer.Add( dlg_editor.control )
sizer.Fit( self )
# Position the dialog:
position_near( editor.control, self )
self.Show()
#---------------------------------------------------------------------------
# Closes the dialog:
#---------------------------------------------------------------------------
def _on_close_dialog ( self, event ):
""" Closes the dialog.
"""
if not event.GetActive():
self._close_dialog()
#---------------------------------------------------------------------------
# Closes the dialog:
#---------------------------------------------------------------------------
def _close_dialog ( self ):
""" Closes the dialog.
"""
if not self._closed:
self._closed = True
self.Destroy()
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