root/trunk/RBRapier/RBRapier/Formats/SVG/SVGSkin/use.py

#!/usr/bin/env python
##~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
##~ License 
##~ 
##- The RuneBlade Foundation library is intended to ease some 
##- aspects of writing intricate Jabber, XML, and User Interface (wxPython, etc.) 
##- applications, while providing the flexibility to modularly change the 
##- architecture. Enjoy.
##~ 
##~ Copyright (C) 2002  TechGame Networks, LLC.
##~ 
##~ This library is free software; you can redistribute it and/or
##~ modify it under the terms of the BSD style License as found in the 
##~ LICENSE file included with this distribution.
##~ 
##~ TechGame Networks, LLC can be reached at:
##~ 3578 E. Hartsel Drive #211
##~ Colorado Springs, Colorado, USA, 80920
##~
##~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#~ Imports 
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

import warnings
from SVGSkinObject import SVGSkinObject
from SVGItems.Styled import StyledSVGItem

#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#~ Definitions 
#~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

class use(StyledSVGItem, SVGSkinObject):
    def InterpretSettings(self, settings):
        StyledSVGItem.InterpretSettings(self, settings)

        width = settings.get('width', None)
        if width is not None:
            width = self._asCoord(width)
            if width < 0 and width is not None:
                raise ValueError, '"width" attribute can not be negative"'
        height = settings.get('height', None)
        if height is not None:
            height = self._asCoord(height)
            if height < 0 and height is not None:
                raise ValueError, '"height" attribute can not be negative"'
        self.object.SetDimensions(width, height)

        xlink = settings[('http://www.w3.org/1999/xlink', 'href')]
        try:
            xlinkbase, xlinktag = xlink.split('#', 1)
        except ValueError:
            xlinkbase, xlinktag = xlink, None

        if xlinkbase or not xlinktag:
            warnings.warn('All xlinks must be document relative for now, but xlink contained %r' % xlink)

        useitem = self.context.idmapping[xlinktag]
        self.object.SetUseItem(useitem)