1# coding: utf-8 2from .otBase import BaseTTXConverter 3 4 5class table__c_i_d_g(BaseTTXConverter): 6 """The AAT ``cidg`` table has almost the same structure as ``gidc``, 7just mapping CIDs to GlyphIDs instead of the reverse direction. 8 9It is useful for fonts that may be used by a PDF renderer in lieu of 10a font reference with a known glyph collection but no subsetted 11glyphs. For instance, a PDF can say “please use a font conforming 12to Adobe-Japan-1”; the ``cidg`` mapping is necessary if the font is, 13say, a TrueType font. ``gidc`` is lossy for this purpose and is 14obsoleted by ``cidg``. 15 16For example, the first font in ``/System/Library/Fonts/PingFang.ttc`` 17(which Apple ships pre-installed on MacOS 10.12.6) has a ``cidg`` table. 18""" 19 pass 20