[XeTeX] Coloured fonts

[Adam Twardoch (Lists)]

PANOSE has nothing to do with color.

On Thu, 18 Mar 2021 at 21:35, Ross Moore <ross.moore at mq.edu.au> wrote:

> Hi David, Philip.
>
>
> On 19 Mar 2021, at 7:17 am, David Carlisle <d.p.carlisle at gmail.com> wrote:
>
> Not sure if xetex can do colour fonts currently,
>
>
> According to here:
>
>      https://www.colorfonts.wtf
>
> there’s not many applications that do support this new technology.
>
> The colour doesn’t show in Phil’s example PDF, neither in Adobe’s
>  Illustrator, nor Acrobat Pro,
> despite Adobe being one of the instigators of this font format.
> So presumably the font isn’t installed correctly into the PDF.
>
> Presumably the  /Style  dictionary here:
>
> 9 0 obj
> <<
> /Descent -173
> /StemV 87
> /Ascent 631
> /FontName /THVNSG+BabelStoneXiangqiColour
> /ItalicAngle 0
> /Style
> <<
> /Panose <080002020604010101010101>
> >>
> /AvgWidth 734
> /FontBBox [-14 -232 1014 795]
> /Type /FontDescriptor
> /CIDSet 16 0 R
> /CapHeight 631
> /Flags 4
> /FontFile2 17 0 R
> >>
> endobj
>
> is where the colour is specified, by that /Panose  entry.
> But there must be something else that is missing.
>
>
> Unfortunately the link to get the font doesn’t work for me.
>
>
> So David, could you possibly send the PDF of the example you posted below,
> please?
>
>
> You can always experiment with luatex which gets this if using harfbuzz
>
> <image.png>
>
> \documentclass{article}
>
> \usepackage{fontspec}
>
> \newfontfamily\chess[Renderer=HarfBuzz]{BabelStoneXiangqiColour.ttf}
> \begin{document}
>
> testing {\chess ^^^^^^01fa64}
>
> \end{document}
>
>
>
> On Thu, 18 Mar 2021 at 18:39, Philip Taylor <P.Taylor at rhul.ac.uk> wrote:
>
>> Seeking to re-typeset a long out-of-print classic on Xiang-Qi ("Chinese
>> Chess"), but with the pieces shewn as they really are rather than as
>> upper-case Latin letters requiring a gloss (the presentation chosen by the
>> original author), I downloaded and installed Andrew West's BabelStone
>> Xiangqi Colour font <https://www.babelstone.co.uk/Fonts/Xiangqi.html>.
>> I then wrote a short piece of XeTeX code to check that the glyphs/pieces
>> appear in the PDF as they should, and very sadly they do not, coming out as
>> monochrome rather than in colour (see attached PDF).
>>
>> The red pieces are described by Andrew as *red Chinese characters on a
>> sandy yellow background*, and the black pieces as *black Chinese
>> characters on a sandy yellow background.*  In the resulting PDF,
>> however, they appear as white Hanzi on a black ground and black Hanzi on a
>> white ground.  Does XeTeX support coloured fonts, and if so, how do I
>> persuade it to render these glyphs as intended rather than in monochrome ?
>>
>> I can, of course, load \font \redpieces = "BabelStone Xiangqi
>> Colour":color=FF0000 scaled \magstep 5 (see code below), but that still
>> does not give me the sandy yellow ground that each glyph was designed to
>> have.
>>
>> 'opentype-info.tex', when run against BabelStone Xiangqi Colour, tells
>> me that the font does not provide any Opentype layout features, so it does
>> not look as if XeTeX's "/ICU:+abcd" convention would allow me to indicate
>> that I require colour support.
>>
>> % !TeX Program=XeTeX
>>
>> \font \pieces = "BabelStone Xiangqi Colour" scaled \magstep 5
>> \font \redpieces = "BabelStone Xiangqi Colour":color=FF0000 scaled
>> \magstep 5
>> \font \blackpieces = "BabelStone Xiangqi Colour" scaled \magstep 5
>> \pieces
>> \centerline {\char "1FA60\relax \ \char "1FA61\relax \ \char "1FA62\relax
>> \ \char "1FA63\relax \ \char "1FA64\relax \ \char "1FA65\relax \ \char
>> "1FA66\relax}
>> \centerline {\strut}
>> \centerline {\char "1FA67\relax \ \char "1FA68\relax \ \char "1FA69\relax
>> \ \char "1FA6A\relax \ \char "1FA6B\relax \ \char "1FA6C\relax \ \char
>> "1FA6D\relax}
>> \centerline {\strut}
>> \centerline {\strut}
>> \centerline {\redpieces \char "1FA60\relax \ \char "1FA61\relax \ \char
>> "1FA62\relax \ \char "1FA63\relax \ \char "1FA64\relax \ \char "1FA65\relax
>> \ \char "1FA66\relax}
>> \centerline {\strut}
>> \centerline {\blackpieces \char "1FA67\relax \ \char "1FA68\relax \ \char
>> "1FA69\relax \ \char "1FA6A\relax \ \char "1FA6B\relax \ \char "1FA6C\relax
>> \ \char "1FA6D\relax}
>> \end
>>
>> --
>> *Philip Taylor*
>>
>
>
>
> Cheers.
>
> Ross
>
>
> Dr Ross Moore
> Department of Mathematics and Statistics
> 12 Wally’s Walk, Level 7, Room 734
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> Macquarie University, NSW 2109, Australia
> T: +61 2 9850 8955  |  F: +61 2 9850 8114
> M:+61 407 288 255  |  E: ross.moore at mq.edu.au
> http://www.maths.mq.edu.au
>
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