Coloured Punctuation and Annotation
wjgo_10009 at btinternet.com
Thu Apr 6 13:39:51 CDT 2017
Michael Everson wrote:
> No. Here is an example of a font available in two variants. In one variant, all those grey swirls are fused to the letters, and it can all be printed in black or one colour ink.
> There is also a second set of fonts included which separates the swirls from the letters, and those can be used in typesetting to get the two-colour effect you see here. That can’t really be done using standard encoding. You’d probably see IIVVOORRYY in the backing store for that word, with every other letter being set in the letter font and the swirl font.
Richard Wordingham mentioned the following.
> The third glyph would use 'index' 0xFFFF to specify that it be displayed in the foreground colour.
If the OpenType specification were augmented so that 'index' 0xFFFE were to specify that the appropriate part of the glyph be displayed in the "first decoration colour", a colour specified in the application program and not in the font; and an application program were augmented so that an end user were able to choose first decoration colour as well as choosing foreground colour, then would that produce the result for which Michael is looking?
Thursday 6 April 2017
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