Thank you for all of this work, Frédéric! I don’t think our WebML rendering has ever looked so good! :-)
-Brent > On Jul 13, 2016, at 10:22 AM, Frédéric WANG <fred.w...@free.fr> wrote: > > Hi WebKit developers, > > We are happy to announce that we are done with the MathML refactoring > proposed last December [1]. The first phase was a big clean up of the > MathML implementation and you can find details in a first blog post [2] > but essentially: > > * MathML renderer classes now derive from RenderBlock instead of > RenderFlexible (except RenderMathMLTable which still derives from > RenderTable) so we no longer interfere with the flexbox code. > * MathML renderer classes do not create anonymous renderers any more > (except RenderMathMLFenced which creates anonymous > RenderMathMLOperators) so the render tree essentially matches the DOM tree. > * MathML renderer classes now perform simple box layout (again except > for RenderMathMLTable and RenderMathMLFenced) and should be much more > consistent with the rest of the WebKit code. > > Many MathML rendering bugs have been fixed as an immediate consequence > of this clean up. But it also became much easier to follow OpenType MATH > & TeX rules for layout [3] and to implement important MathML features. > This has been done in a second phase and you can find details on the > MathML improvements in a second blog post [4]. > > During the development, we also decided to include a third phase: Moving > the parsing of MathML attributes into the DOM classes instead of doing > it in the renderer classes. This has only been partially achieved but > could be addressed in future developments. For those who are interested, > it is tracked in [5]. > > Finally, we tested the rendering on GTK, EFL, OS X and iOS ports and it > seems good. The status of the Windows port is unknown. We expanded the > test suite with more MathML tests and performed some gardening: > * All the tests pass on the GTK bots. > * All but the mismatch tests pass on EFL bots (it's not clear whether > screenshots are correctly taken). > * As discussed in a previous thread, OS X and iOS bots lack > pre-installed math fonts [6] and these fonts are not whitelisted by the > test runner. Most of the failures were due to tests requiring such math > fonts and so these tests are now skipped. > * The Windows port also has several unexplained failures but someone > should analyze that more carefully. > > We plan to continue MathML developments in the future including > finishing some refactoring (RenderMathMLTable, attribute parsing...) and > improving MathML support and rendering quality. > > Thank you again to all the people who made this contribution possible! > > Frédéric, for the Igalia's Web Platform Team > > [1] https://trac.webkit.org/wiki/MathML/Early_2016_Refactoring > [2] http://frederic-wang.fr/mathml-refactoring-in-webkit.html > [3] http://www.mathml-association.org/MathMLinHTML5/ > [4] http://frederic-wang.fr/mathml-improvements-in-webkit.html > [5] https://webkit.org/b/156536 > [6] https://trac.webkit.org/wiki/MathML/Fonts > > > _______________________________________________ > webkit-dev mailing list > webkit-dev@lists.webkit.org > https://lists.webkit.org/mailman/listinfo/webkit-dev _______________________________________________ webkit-dev mailing list webkit-dev@lists.webkit.org https://lists.webkit.org/mailman/listinfo/webkit-dev