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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: 10/21/2004
#
#------------------------------------------------------------------------------
""" Defines the various font editors and the font editor factory, for the
wxPython user interface toolkit..
"""
#-------------------------------------------------------------------------------
# Imports:
#-------------------------------------------------------------------------------
import wx
from traits.api import Bool
from traitsui.editors.font_editor \
import ToolkitEditorFactory as BaseToolkitEditorFactory
from editor_factory \
import SimpleEditor as BaseSimpleEditor, \
TextEditor as BaseTextEditor, \
ReadonlyEditor as BaseReadonlyEditor
from editor \
import Editor
from helper \
import TraitsUIPanel, disconnect
#-------------------------------------------------------------------------------
# Constants:
#-------------------------------------------------------------------------------
# Standard font point sizes
PointSizes = [
'8', '9', '10', '11', '12', '14', '16', '18',
'20', '22', '24', '26', '28', '36', '48', '72'
]
# All available font styles
Styles = ['Normal', 'Slant', 'Italic']
# All available font weights
Weights = ['Normal', 'Light', 'Bold']
# All available font facenames
facenames = None
#---------------------------------------------------------------------------
# The wxPython ToolkitEditorFactory class.
#---------------------------------------------------------------------------
## We need to add wx-specific methods to the editor factory, and so we create
## a subclass of the BaseToolkitEditorFactory.
class ToolkitEditorFactory(BaseToolkitEditorFactory):
""" wxPython editor factory for font editors.
"""
show_style = Bool(False)
show_weight = Bool(False)
#---------------------------------------------------------------------------
# Returns a wxFont object corresponding to a specified object's font trait:
#---------------------------------------------------------------------------
def to_wx_font ( self, editor ):
""" Returns a wxFont object corresponding to a specified object's font
trait.
"""
font = editor.value
return wx.Font( font.GetPointSize(), font.GetFamily(), font.GetStyle(),
font.GetWeight(), font.GetUnderlined(),
font.GetFaceName() )
#---------------------------------------------------------------------------
# Gets the application equivalent of a wxPython Font value:
#---------------------------------------------------------------------------
def from_wx_font ( self, font ):
""" Gets the application equivalent of a wxPython Font value.
"""
return font
#---------------------------------------------------------------------------
# Returns the text representation of the specified object trait value:
#---------------------------------------------------------------------------
def str_font ( self, font ):
""" Returns the text representation of the specified object trait value.
"""
weight = { wx.LIGHT: ' Light',
wx.BOLD: ' Bold' }.get( font.GetWeight(), '' )
style = { wx.SLANT: ' Slant',
wx.ITALIC:' Italic' }.get( font.GetStyle(), '' )
return '%s point %s%s%s' % (
font.GetPointSize(), font.GetFaceName(), style, weight )
#---------------------------------------------------------------------------
# Returns a list of all available font facenames:
#---------------------------------------------------------------------------
def all_facenames ( self ):
""" Returns a list of all available font facenames.
"""
global facenames
if facenames is None:
facenames = FontEnumerator().facenames()
facenames.sort()
return facenames
#-------------------------------------------------------------------------------
# 'SimpleFontEditor' class:
#-------------------------------------------------------------------------------
class SimpleFontEditor ( BaseSimpleEditor ):
""" Simple style of font editor, which displays a text field that contains
a text representation of the font value (using that font if possible).
Clicking the field displays a font selection dialog box.
"""
#---------------------------------------------------------------------------
# Invokes the pop-up editor for an object trait:
#---------------------------------------------------------------------------
def popup_editor ( self, event ):
""" Invokes the pop-up editor for an object trait.
"""
font_data = wx.FontData()
font_data.SetInitialFont( self.factory.to_wx_font( self ) )
dialog = wx.FontDialog( self.control, font_data )
if dialog.ShowModal() == wx.ID_OK:
self.value = self.factory.from_wx_font(
dialog.GetFontData().GetChosenFont() )
self.update_editor()
dialog.Destroy()
#---------------------------------------------------------------------------
# Updates the editor when the object trait changes external to the editor:
#---------------------------------------------------------------------------
def update_editor ( self ):
""" Updates the editor when the object trait changes externally to the
editor.
"""
super( SimpleFontEditor, self ).update_editor()
set_font( self )
#---------------------------------------------------------------------------
# Returns the text representation of a specified font value:
#---------------------------------------------------------------------------
def string_value ( self, font ):
""" Returns the text representation of a specified font value.
"""
return self.factory.str_font( font )
#-------------------------------------------------------------------------------
# 'CustomFontEditor' class:
#-------------------------------------------------------------------------------
class CustomFontEditor ( Editor ):
""" Custom style of font editor, which displays the following:
* A combo box containing all available type face names.
* A combo box containing the available type sizes.
* A combo box containing the available type styles
"""
#---------------------------------------------------------------------------
# Finishes initializing the editor by creating the underlying toolkit
# widget:
#---------------------------------------------------------------------------
def init ( self, parent ):
""" Finishes initializing the editor by creating the underlying toolkit
widget.
"""
# Create a panel to hold all of the buttons:
self.control = panel = TraitsUIPanel( parent, -1 )
sizer = wx.BoxSizer( wx.VERTICAL )
# Add all of the font choice controls:
sizer2 = wx.BoxSizer( wx.HORIZONTAL )
facenames = self.factory.all_facenames()
control = self._facename = wx.Choice( panel, -1, wx.Point( 0, 0 ),
wx.Size( -1, -1 ), facenames )
sizer2.Add( control, 4, wx.EXPAND )
wx.EVT_CHOICE( panel, control.GetId(), self.update_object_parts )
control = self._point_size = wx.Choice( panel, -1, wx.Point( 0, 0 ),
wx.Size( -1, -1 ), PointSizes )
sizer2.Add( control, 1, wx.EXPAND | wx.LEFT, 3 )
wx.EVT_CHOICE( panel, control.GetId(), self.update_object_parts )
if self.factory.show_style:
self._style = wx.Choice(panel, -1, wx.Point(0,0),
wx.Size(-1, -1), Styles)
sizer2.Add(self._style, 1, wx.EXPAND | wx.LEFT, 3)
wx.EVT_CHOICE( panel, self._style.GetId(), self.update_object_parts )
if self.factory.show_weight:
self._weight = wx.Choice(panel, -1, wx.Point(0,0),
wx.Size(-1, -1), Weights)
sizer2.Add(self._weight, 1, wx.EXPAND | wx.LEFT, 3)
wx.EVT_CHOICE( panel, self._weight.GetId(), self.update_object_parts )
sizer.Add( sizer2, 0, wx.EXPAND )
# Set-up the layout:
panel.SetSizer( sizer )
self.set_tooltip()
#---------------------------------------------------------------------------
# Disposes of the contents of an editor:
#---------------------------------------------------------------------------
def dispose ( self ):
""" Disposes of the contents of an editor.
"""
disconnect( self._facename, wx.EVT_CHOICE )
disconnect( self._point_size, wx.EVT_CHOICE )
if self.factory.show_style:
disconnect(self._style, wx.EVT_CHOICE)
if self.factory.show_weight:
disconnect(self._weight, wx.EVT_CHOICE)
super( CustomFontEditor, self ).dispose()
#---------------------------------------------------------------------------
# Handles the user modifying one of the font components:
#---------------------------------------------------------------------------
def update_object_parts ( self, event ):
""" Handles the user modifying one of the font components.
"""
point_size = int( self._point_size.GetStringSelection() )
facename = self._facename.GetStringSelection()
style = wx.FONTSTYLE_NORMAL
if self.factory.show_style:
style += self._style.GetCurrentSelection()
weight = wx.FONTWEIGHT_NORMAL
if self.factory.show_weight:
weight += self._weight.GetCurrentSelection()
font = wx.Font( point_size, wx.DEFAULT, style, weight,
faceName = facename )
self.value = self.factory.from_wx_font( font )
#---------------------------------------------------------------------------
# Updates the editor when the object trait changes external to the editor:
#---------------------------------------------------------------------------
def update_editor ( self ):
""" Updates the editor when the object trait changes externally to the
editor.
"""
font = self.factory.to_wx_font( self )
try:
self._facename.SetStringSelection( font.GetFaceName() )
except:
self._facename.SetSelection( 0 )
try:
self._point_size.SetStringSelection( str( font.GetPointSize() ) )
except:
self._point_size.SetSelection( 0 )
#---------------------------------------------------------------------------
# Returns the text representation of a specified font value:
#---------------------------------------------------------------------------
def string_value ( self, font ):
""" Returns the text representation of a specified font value.
"""
return self.factory.str_font( font )
#-------------------------------------------------------------------------------
# 'TextFontEditor' class:
#-------------------------------------------------------------------------------
class TextFontEditor ( BaseTextEditor ):
""" Text style of font editor, which displays an editable text field
containing a text representation of the font value (using that font if
possible).
"""
#---------------------------------------------------------------------------
# Handles the user changing the contents of the edit control:
#---------------------------------------------------------------------------
def update_object ( self, event ):
""" Handles the user changing the contents of the edit control.
"""
self.value = self.control.GetValue()
#---------------------------------------------------------------------------
# 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.
"""
super( TextFontEditor, self ).update_editor()
set_font( self )
#---------------------------------------------------------------------------
# Returns the text representation of a specified font value:
#---------------------------------------------------------------------------
def string_value ( self, font ):
""" Returns the text representation of a specified font value.
"""
return self.factory.str_font( font )
#-------------------------------------------------------------------------------
# 'ReadonlyFontEditor' class:
#-------------------------------------------------------------------------------
class ReadonlyFontEditor ( BaseReadonlyEditor ):
""" Read-only style of font editor, which displays a read-only text field
containing a text representation of the font value (using that font if
possible).
"""
#---------------------------------------------------------------------------
# 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.
"""
super( ReadonlyFontEditor, self ).update_editor()
set_font( self )
#---------------------------------------------------------------------------
# Returns the text representation of a specified font value:
#---------------------------------------------------------------------------
def string_value ( self, font ):
""" Returns the text representation of a specified font value.
"""
return self.factory.str_font( font )
#-------------------------------------------------------------------------------
# Set the editor control's font to match a specified font:
#-------------------------------------------------------------------------------
def set_font ( editor ):
""" Sets the editor control's font to match a specified font.
"""
font = editor.factory.to_wx_font( editor )
font.SetPointSize( min( 10, font.GetPointSize() ) )
editor.control.SetFont( font )
#-------------------------------------------------------------------------------
# 'FontEnumerator' class:
#-------------------------------------------------------------------------------
class FontEnumerator ( wx.FontEnumerator ):
""" An enumeration of fonts.
"""
#---------------------------------------------------------------------------
# Returns a list of all available font facenames:
#---------------------------------------------------------------------------
def facenames ( self ):
""" Returns a list of all available font facenames.
"""
self._facenames = []
self.EnumerateFacenames()
return self._facenames
#---------------------------------------------------------------------------
# Adds a facename to the list of facenames:
#---------------------------------------------------------------------------
def OnFacename ( self, facename ):
""" Adds a facename to the list of facenames.
"""
self._facenames.append( facename )
return True
# Define the names SimpleEditor, CustomEditor, TextEditor and ReadonlyEditor
# which are looked up by the editor factory for the font editor.
SimpleEditor = SimpleFontEditor
CustomEditor = CustomFontEditor
TextEditor = TextFontEditor
ReadonlyEditor = ReadonlyFontEditor
### EOF #######################################################################
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