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#-------------------------------------------------------------------------------
#
# Copyright (c) 2007, 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: 08/11/2007
#
#-------------------------------------------------------------------------------
""" Defines a themed read-only text string.
"""
#-------------------------------------------------------------------------------
# Imports:
#-------------------------------------------------------------------------------
import wx
from image_slice \
import paint_parent
from helper \
import BufferDC
#-------------------------------------------------------------------------------
# Class 'ImageText'
#-------------------------------------------------------------------------------
class ImageText ( wx.PyWindow ):
""" Defines a text control that displays an ImageSlice in its background.
"""
#-- wx.PyWindow Method Overrides -------------------------------------------
def __init__ ( self, parent, theme, text = '', border=False ):
""" Initializes the object.
"""
self._theme = theme
self._border = border
if theme is not None:
self._image_slice = theme.image_slice
super( ImageText, self ).__init__( parent, -1,
style = wx.FULL_REPAINT_ON_RESIZE )
self._text_size = None
self._text = text
# Set up the painting event handlers:
wx.EVT_ERASE_BACKGROUND( self, self._erase_background )
wx.EVT_PAINT( self, self._on_paint )
size = self.GetMinSize()
self.SetMinSize( size )
self.SetSize( size )
def AcceptsFocus ( self ):
""" Indicate that we are a static control that does not accept focus.
"""
return False
#-- wxPython Event Handlers ------------------------------------------------
def _erase_background ( self, event ):
""" Do not erase the background here (do it in the 'on_paint' handler).
"""
pass
def _on_paint ( self, event ):
""" Paint the background using the associated ImageSlice object.
"""
dc = BufferDC( self )
paint_parent( dc, self )
if self._theme is not None:
wdx, wdy = self.GetClientSize()
self._image_slice.fill( dc, 0, 0, wdx, wdy, True )
dc.SetTextForeground( self._image_slice.content_color )
dc.SetBackgroundMode( wx.TRANSPARENT )
dc.SetFont( self.GetFont() )
tx, ty, tdx, tdy = self._get_text_bounds()
dc.DrawText( self._text, tx, ty )
dc.copy()
def GetMinSize ( self ):
""" Returns the minimum size for the window.
"""
tdx, tdy, descent, leading = self._get_text_size()
if self._theme is None:
return wx.Size( tdx + 8, tdy + 4 )
content = self._theme.content
tdx += (content.left + content.right)
tdy += (content.top + content.bottom)
slice = self._image_slice
return wx.Size( max( slice.left + slice.right,
slice.xleft + slice.xright + tdx + 8 ),
max( slice.top + slice.bottom,
slice.xtop + slice.xbottom + tdy + 4 ) )
def SetFont ( self, font ):
""" Set the window font.
"""
super( ImageText, self ).SetFont( font )
self._refresh()
def SetLabel ( self, label ):
""" Set the window label.
"""
self._text = label
self._refresh()
def _refresh ( self ):
""" Refreshes the contents of the control.
"""
if self._text_size is not None:
self.RefreshRect( wx.Rect( *self._get_text_bounds() ), False )
self._text_size = None
self.SetMinSize( self.GetMinSize() )
self.RefreshRect( wx.Rect( *self._get_text_bounds() ), False )
def _get_text_size ( self, text = None ):
""" Returns the text size information for the window.
"""
if self._text_size is None:
if text is None:
text = self._text
if text.strip() == '':
text = 'M'
self._text_size = self.GetFullTextExtent( text )
return self._text_size
def _get_text_bounds ( self ):
""" Get the window bounds of where the current text should be
displayed.
"""
tdx, tdy, descent, leading = self._get_text_size()
wdx, wdy = self.GetClientSize()
theme = self._theme
if theme is None:
return ( wdx - tdx, (wdy - tdy) / 2, tdx, tdy )
slice = self._image_slice
content = theme.content
ady = wdy - slice.xtop - slice.xbottom
ty = (wdy + slice.xtop + content.top - slice.xtop -
slice.xbottom - tdy) / 2
alignment = theme.alignment
if alignment == 'left':
tx = slice.xleft + content.left
elif alignment == 'center':
adx = wdx - slice.xleft - slice.xright
tx = slice.xleft + content.left + 4 + ((adx - tdx) / 2)
else:
tx = wdx - tdx - slice.xright - content.right
return ( tx + theme.label.left, ty + theme.label.top, tdx, tdy )
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