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small re-write of section on design issues authored by Peter Krautzberger's avatar Peter Krautzberger
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STIX-feedback.md
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...@@ -2,17 +2,14 @@ This page collects information about the STIX fonts and how to create STIX webfo ...@@ -2,17 +2,14 @@ This page collects information about the STIX fonts and how to create STIX webfo
# Design Issues # Design Issues
The webfonts will not be a full substitute for the STIX fonts in browsers with native MathML support for several reasons. The webfonts will not be a full substitute for the STIX fonts in browsers with native MathML support.
This is due to the way browsers handle math fonts right now. While glyphs at unicode codepoints generally work, stretchy characters require the combination of severaly glyphs; some of these glyphs are stored in non-unicode positions and accessed through OpenType Math Tables -- which no browser currently supports. On the one hand, this due to the way browsers (specifically Firefox) handle math fonts right now. While glyphs at unicode codepoints generally work, stretchy characters require the combination of severaly glyphs; some of these glyphs are stored in non-unicode positions and accessed through OpenType Math Tables -- which no browser currently supports. To resolve this problem, Firefox has the relevant table information hardcoded in its source -- but only for STIX and Asana fonts; see https://developer.mozilla.org/en-US/docs/Mozilla/MathML_Project/Fonts for more information. (Safari does not handle non-unicode glyphs and only a few unicode constructions).
To resolve this problem, Firefox has the relevant table information hardcoded in its source -- but only for STIX and Asana fonts; see https://developer.mozilla.org/en-US/docs/Mozilla/MathML_Project/Fonts for more information. (Safari does not handle non-unicode glyphs and only a few unicode constructions). On the other hand, even if browsers supported Open Type Math Tables, splitting the fonts would require dropping the Open Type Math table. It also requires adding space characters for monospace, moving non-Unicode glyphs to the Plane0 PUA etc.
Even if browsers supported Open Type Math Tables, splitting the fonts would require dropping the Open Type Math table. It also requires adding space characters for monospace, moving non-Unicode glyphs to the Plane0 PUA etc.
Besides these technical issues, using the mathjax-webfonts would be slightly cumbersome as authors would have to specify 114 instead of 4 webfonts. Besides these technical issues, using the mathjax-webfonts would be slightly cumbersome as authors would have to specify 114 instead of 4 webfonts.
# Technical issues. # Technical issues.
* In STIXMath-Regular.otf, some glyphs used as components of stretchy operators (e.g. pieces of parenthesis) could be encoded as characters from the Miscellaneous Technical unicode block. This includes those from uni2320.s1 to uni23B3.s1 and from uni23B7.s1 to uni23B9.s1 * In STIXMath-Regular.otf, some glyphs used as components of stretchy operators (e.g. pieces of parenthesis) could be encoded as characters from the Miscellaneous Technical unicode block. This includes those from uni2320.s1 to uni23B3.s1 and from uni23B7.s1 to uni23B9.s1
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