Bug 66277 - Use columnalign to implement matrix alignment
Use columnalign to implement matrix alignment
 Status: RESOLVED FIXED None LibreOffice Unclassified Formula Editor (show other bugs) 4.2.0.0.alpha0+ Master All All medium normal Frédéric Wang target:4.2.0

 Reported: 2013-06-27 21:12 UTC by Frédéric Wang 2013-07-09 09:12 UTC (History) 0 users

Attachments
Sample output (4.56 KB, text/html)
2013-06-29 20:59 UTC, Frédéric Wang
Details

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 Frédéric Wang 2013-06-27 21:12:51 UTC Two examples from the LibreOffice doc: matrix{ a =b a # "=" # alignl{b} ## = c +1 {} # "=" # alignl{c+1} } stack{ 'phantom') alignl{a} = b # alignl{phantom{a} = c+1} } The equal signs are supposed to be aligned but this property is lost when exported to MathML. The mtable@columnalign attribute should be used instead. This will work in MathJax and Firefox (but note the following bug: https://bugzilla.mozilla.org/show_bug.cgi?id=491384). Frédéric Wang 2013-06-27 21:55:32 UTC Mass changes to assign bugs to myself. Frédéric Wang 2013-06-29 20:58:09 UTC I've submitted a patch for review: https://gerrit.libreoffice.org/#/c/4625/ Testcases (some are from the user manual): matrix{ alignr x+y # {}={} # alignl 2 ## alignr x # {}={} # alignl 2-y } {alignl x^2 - 9} over {alignl x} newline left(binom { alignr 100} {alignr 7} right) stack{Hello world # alignl(a)} matrix{ a # "=" # alignl{b} ## {} # "=" # alignl{c+1} } alignl a^2 + b^2 = c^2 newline alignc 2 * (1 + 2 + 3 + 4 + 5) = 6 * 5 newline alignr %gamma = x^2 - y^2 Note that StarMath applies alignment recursively: that is if you align some cells in a matrix the same alignment will apply for example to numerator and denominator of fractions inside the matrix cell. That seems a bit weird to me and I don't think that's what we want in general. The MathML output only applies alignment at the specified level. I think it's better and anyway it's easier to handle. Frédéric Wang 2013-06-29 20:59:17 UTC Created attachment 81724 [details] Sample output As usual, I attach the new output in a Web page that you can open in Firefox. If you see https://bugzilla.mozilla.org/show_bug.cgi?id=491384 try to zoom in/out the page. Commit Notification 2013-07-09 09:12:18 UTC Frederic Wang committed a patch related to this issue. It has been pushed to "master": http://cgit.freedesktop.org/libreoffice/core/commit/?id=89bb6fd1918f342886bd1c6f4e4824a6e87743d4 fdo#66277 - fix alignment for binom and stack too. The patch should be included in the daily builds available at http://dev-builds.libreoffice.org/daily/ in the next 24-48 hours. More information about daily builds can be found at: http://wiki.documentfoundation.org/Testing_Daily_Builds Affected users are encouraged to test the fix and report feedback.