mirror of
https://git.lyx.org/repos/lyx.git
synced 2025-01-23 16:52:02 +00:00
f643ae7007
The purpose of this branch is to improve the spacing in math equations * do not use hardcoded pixel values, but math units that depend on zoom and dpi. This should be good for HiDPI systems. * implement as much as possible the math typesetting algorithm described in Appendix G of the TeXbook. One typical example of the spacing algorithm is that ``-a'' has no spacing, contrary to ``a + b''. This reflects the unitary/binary minus that will indeed happen in typeset output. Together with the better character substitution that has already been implemented by Guillaume, we get a nice improvement of mathed looks. What makes this code complicated is that it handles macros properly: the spacing inside the macro will depend on the values of the arguments and the elements that are before and after the macro. As a result, many definitions in lib/symbols are now just copy/pasted from the relevant sty file. In particular, it is now possible to make use of \mathrel, \mathbin, etc. macros to specify spacing. This merge is a starting point. Remaining work includes * proper handling of sub/superscript nucleus and of font-changing insets (as is done in the TeX algorithm). * proper typesetting of fractions Thanks to Guillaume for extensive testing.