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Diffstat (limited to 'macros/luatex/optex/base/sections.opm')
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diff --git a/macros/luatex/optex/base/sections.opm b/macros/luatex/optex/base/sections.opm new file mode 100644 index 0000000000..45a3e61d28 --- /dev/null +++ b/macros/luatex/optex/base/sections.opm @@ -0,0 +1,411 @@ +%% This is part of OpTeX project, see http://petr.olsak.net/optex + +\_codedecl \chap {Titles, chapters, sections, subsections <2020-03-28>} % preloaded in format + + \_doc --------------------------- + We are using scaled fonts for titles + \`\_titfont`, \`\_chapfont`, \`\_secfont` and \`\_seccfont`. + They are scaled from main fonts size + of the document, which is declared by first `\typosize[<fo-size>/<b-size>]` + command. + \_cod --------------------------- + +\_def \_titfont {\_scalemain\_typoscale[\_magstep4/\_magstep5]\_boldify} +\_def \_chapfont {\_scalemain\_typoscale[\_magstep3/\_magstep3]\_boldify} +\_def \_secfont {\_scalemain\_typoscale[\_magstep2/\_magstep2]\_boldify} +\_def \_seccfont {\_scalemain\_typoscale[\_magstep1/\_magstep1]\_boldify} + + \_doc --------------------------- + The \`\tit` macro is defined by `\eoldef`, it means that the parameter is + separated by end of line. The macros `\chap`, `\sec` and `\secc` use + `\eoldef` too. + \_cod --------------------------- + +\_eoldef\_tit #1{\_vglue\_titskip + {\_leftskip=0pt plus1fill \_rightskip=\_leftskip % centering + \_titfont \_noindent #1\_par}% + \_nobreak\_bigskip +} +\_public \tit ; + + \_doc --------------------------- + You can re-define \`\_printchap`, \`\_printsec` or \`\_printsecc` macros if + another design of section titles is needed. These macros gets the + `<title>` text in its parameter. The common recommendations for these macros are: + \begitems + * Use \^`\_abovetitle``{<penaltyA>}{<skipA>}` and \^`\_belowtitle``{<skipB>}` + for inserting vertical material above and below the section title. + The arguments of these macros are normally used, i.\,e.\ \^`\_abovetitle` + inserts `<penaltyA><skipA>` and \^`\_belowtitle` inserts `<skipB>`. + But there is an + exception: if \^`\_belowtitle``{<skipB>}` is immediately followed by + \^`\_abovetitle``{<penaltyA>}{<skipA>}` (for example section title is + immediately followed by subsection title), then only `<skipA>` is generated, + i.\,e.\ `<skipB><penaltyA><skipA>` is reduced only to `<skipA>`. + The reason of such behavior: we don't want to duplicate vertical skip + and we don't want to use negative penalty in such cases. + Moreover, \^`\_abovetitle``{<penaltyA>}{<skipA>}` takes previous whatever + vertical skip (other than from `\_belowtitle`) and generates only + greater from this pair of skips. It means that `<whatever-skip><penaltyA><skipA>` + is transformed to `<penaltyA>`max(`<whatever-skip><skipA>`). + The reason of such behavior: we don't want to + duplicate vertical skips (from `\_belowlistskip`, for example) above the title. + * Use \^`\_printrefnum``[<pre>@<post>]` in horizontal mode. It prints + `<pre><ref-num><post>`. The `<ref-num>` is \^`\_thechapnum` or \^`\_thesecnum` + or \^`\_theseccnum` depending on what type o title is processed. + If \^`\nonum` prefix is used then \^`\_printrefnum` prints nothing. + The macro \^`\_printrefnum` does more work: it creates destination of hyperlinks + (if \^`\hyperlinks``{}{}` is used) and saves references from label (if + \^`\label``[<label>]` precedes) and saves references for table of contents + (if \^`\maketoc` is used). + * Use \^`\nbpar` for closing the paragraph for printing title. This + command inserts `\_nobreak` between each line of such paragraph, so + the title cannot be broken to more pages. + * You can use \^`\_firstnoindent` in order to the first paragraph after + the title is not indented. + \enditems + \_cod --------------------------- + +\_def\_printchap #1{\_vfill\_supereject + {\_chapfont \_noindent \_mtext{chap} \_printrefnum[@]\_par + \_nobreak\_smallskip + \_noindent \_raggedright #1\_nbpar}\_mark{}% + \_nobreak \_belowtitle{\_bigskip}% + \_firstnoindent +} +\_def\_printsec#1{\_par + \_abovetitle{\_penalty-400}\_bigskip + {\_secfont \_noindent \_raggedright \_printrefnum[@\_quad]#1\_nbpar}\_insertmark{#1}% + \_nobreak \_belowtitle{\_medskip}% + \_firstnoindent +} +\_def\_printsecc#1{\_par + \_abovetitle{\_penalty-200}\_medskip + {\_seccfont \_noindent \_raggedright \_printrefnum[@\_quad]#1\_nbpar}% + \_nobreak \_belowtitle{\_medskip}% + \_firstnoindent +} + + \_doc -------------------------- + The \`\_sectionlevel` is the level of the printed section: + \begitems + * `\_sectionlevel=0` -- reserved for parts of the book (unused by default) + * `\_sectionlevel=1` -- chapters (used in `\chap`) + * `\_sectionlevel=2` -- sections (used in `\sec`) + * `\_sectionlevel=3` -- subsections (used in `\secc`) + * `\_sectionlevel=4` -- subsubsections (unused by default) + \enditems + \_cod -------------------------- + +\_newcount\_sectionlevel +\_def \_secinfo {\_ifcase \_sectionlevel + part\_or chap\_or sec\_or secc\_or seccc\_fi +} + + \_doc -------------------------- + The \`\_chapx` initializes counters used in chapters, + the \`\_secx` initializes counters in sections + and \`\_seccx` initializes counters in subsections. + If you have more types of numbered objects in your document then you can + declare appropriate counters and do `\addto\_chapx{\yourcounter=0 }` + for example. If you have another concept of numbering objects used in your + document, you can re-define these macros. All settings here are global + because it is used by `{\_globaldefs=1 \_chapx}`. + + Default concept: Tables, figuers and display maths are numbered + from one in each section -- subsetions doesn't reset these counters. + Footnotes declared by \^`\fnotenumchapters` are numbered in each chapter + from one. + + The `\_the*` macros + \`\_thechapnum`, \`\_thesecnum`, \`\_theseccnum`, + \`\_thetnum`, \`\_thefnum` and \`\_thednum` + include the format of numbers used when the object + is printing. If chapter is never used in the document then `\_chapnum=0` + and \`\_othe``\_chapnum.` expands to empty. Sections have numbers <num> and + subsections <num>.<num>. On the other hand, if chapter is used in the + document then `\_chapnum>0` and sections have numbers` <num>.<num>` + and subsections have numbers `<num>.<num>.<num>`. + + \_cod -------------------------- + +\_newcount \_chapnum % chapters +\_newcount \_secnum % sections +\_newcount \_seccnum % subsections +\_newcount \_tnum % table numbers +\_newcount \_fnum % figure numbers +\_newcount \_dnum % numbered display maths + +\_def \_chapx {\_secx \_secnum=0 \_lfnotenum=0 } +\_def \_secx {\_seccx \_seccnum=0 \_tnum=0 \_fnum=0 \_dnum=0 \_resetABCDE } +\_def \_seccx {} + +\_def \_thechapnum {\_the\_chapnum} +\_def \_thesecnum {\_othe\_chapnum.\_the\_secnum} +\_def \_theseccnum {\_othe\_chapnum.\_the\_secnum.\_the\_seccnum} +\_def \_thetnum {\_othe\_chapnum.\_the\_secnum.\_the\_tnum} +\_def \_thefnum {\_othe\_chapnum.\_the\_secnum.\_the\_fnum} +\_def \_thednum {(\_the\_dnum)} + +\_def\_othe #1.{\_ifnum#1>0 \_the#1.\_fi} +\_def\_incr #1{\_global\_advance#1by1 } + + \_doc ---------------------------- + The \`\notoc` and \`\nonum` prefixes are implemented by + internal `\_ifnotoc` and `\_ifnonum`. They are reset + after each chapter/section/subsection by the \`\_resetnonumnotoc` macro. + \_cod ---------------------------- + +\_newifi \_ifnotoc \_notocfalse \_def\_notoc {\_global\_notoctrue} +\_newifi \_ifnonum \_nonumfalse \_def\_nonum {\_global\_nonumtrue} +\_def \_resetnonumnotoc{\_global\_notocfalse \_global\_nonumfalse} +\_public \notoc \nonum ; + + \_doc ---------------------------- + The \`\chap`, \`\sec` and \`\secc` macros are implemented here. + The \`\_inchap`, \`\_insec` and \`\_insecc` macros does the real work, + First, we read the optional parameter `[<label>]`, if it exists. + \_cod ---------------------------- + +\_optdef\_chap[]{\_trylabel \_inchap} +\_optdef\_sec []{\_trylabel \_insec} +\_optdef\_secc[]{\_trylabel \_insecc} +\_def\_trylabel{\_istoksempty\_opt\_iffalse \_label[\_the\_opt]\_fi} + +\_eoldef\_inchap #1{\_par \_sectionlevel=1 + \_def \_savedtitle {#1}% saved to .ref file + \_ifnonum \_else {\_globaldefs=1 \_incr\_chapnum \_chapx}\_fi + \_edef \_therefnum {\_ifnonum \_space \_else \_thechapnum \_fi}% + \_printchap{#1}% + \_resetnonumnotoc +} +\_eoldef\_insec #1{\_par \_sectionlevel=2 + \_def \_savedtitle {#1}% saved to .ref file + \_ifnonum \_else {\_globaldefs=1 \_incr\_secnum \_secx}\_fi + \_edef \_therefnum {\_ifnonum \_space \_else \_thesecnum \_fi}% + \_printsec{#1}% + \_resetnonumnotoc +} +\_eoldef\_insecc #1{\_par \_sectionlevel=3 + \_def \_savedtitle {#1}% saved to .ref file + \_ifnonum \_else {\_globaldefs=1 \_incr\_seccnum \_seccx}\_fi + \_edef \_therefnum {\_ifnonum \_space \_else \_theseccnum \_fi}% + \_printsecc{#1}% + \_resetnonumnotoc +} +\_public \chap \sec \secc ; + + \_doc ---------------------------- + The \`\_printrefnum``[<pre>@<post>]` macro is used in `\_print*` macros. + \nl + The \`\_wtotoc` `{<level>}{<info>}{<ref-num>}{<title-text>}` + macro expands its parameters and does \^`\_wref`. + + Note that the `<tite-text>` is `\detokenize`d before `\_wref`, so the + problem of \"fragile macros" from old \LaTeX/ never occurs. + \_cod ---------------------------- + +\_def \_printrefnum [#1@#2]{\_leavevmode % we must be in horizontal mode + \_ifnonum \_else #1\_therefnum #2\_fi + \_wlabel \_therefnum % references, if `\label[<label>]` is declared + \_ifnotoc \_else \_incr \_tocrefnum + \_dest[toc:\_the\_tocrefnum]% + \_wtotoc{\_the\_sectionlevel}{\_secinfo}% + {\_therefnum}{\_detokenize\_ea{\_savedtitle}}% + \_fi +} +\_def \_wtotoc #1#2#3#4{\_edef\_tmp{{#1}{#2}{#3}{#4}}\_ea\_wtotocA\_tmp} +\_def \_wtotocA #1#2#3#4{\_wref\_Xtoc{{#1}{#2}{#3}{#4}}} + + \_doc ----------------------------- + The \`\_abovetitle``{<penaltyA>}{<skipA>}` and \`\_belowtitle``{<skipB>}` pair + communicates using a special penalty 11333 in vertical mode. + The `\_belowtitle` puts the vertical skip (its value is saved in + `\_savedtitleskip`) followed by this special penalty. + The `\_abovetitle` reads `\lastpenalty` and if it has this special value + then it removes the skip used before and don't use the parameter. + The `\abovetitle` creates `<skipA>` only if whatever previous skip is less + or equal than `<skipA>`. We must save `<whatever-skip>`, remove it, + create `<penaltyA>` (if `\_belowtitle` does not preceded) and create + <whatever-skip> or `<skipA>` depending on what is greater. + The amount of `<skipA>` is measured using `\setbox0=\vbox`. + \_cod ----------------------------- + +\_newskip \_savedtitleskip +\_newskip \_savedlastskip +\_def\_abovetitle #1#2{\_savedlastskip=\_lastskip % <whatever-skip> + \_ifdim\_lastskip>0pt \_vskip-\_lastskip \_fi + \_ifnum\_lastpenalty=11333 \_vskip-\_savedtitleskip \_else #1\_fi + \_ifdim\_savedlastskip>0pt \_setbox0=\_vbox{#2\_global\_tmpdim=\_lastskip}% + \_else \_tmpdim=\_maxdimen \_fi + \_ifdim\_savedlastskip>\_tmpdim \vskip\_savedlastskip \_else #2\_fi +} +\_def\_belowtitle #1{#1\_global\_savedtitleskip=\_lastskip \_penalty11333 } + + \_doc ----------------------------- + \`\nbpar` sets `\interlinepenaty` value. + \`\nl` is \"new line" in text (or titles), but space in toc or headlines or outlines. + \_cod ----------------------------- + +\_def\_nbpar{{\_interlinepenalty=10000\_endgraf}} + +\_protected\_def\_nl{\_hfil\_break} +\_regmacro {\_def\_nl{\_unskip\_space}} {\_def\_nl{\_unskip\_space}} {\_def\_nl{ }} +\_regmacro {\_def\nl{\_unskip\_space}} {\_def\nl{\_unskip\_space}} {\_def\nl{ }} + +\_public \nbpar \nl ; + + \_doc ----------------------------- + \`\_firstnoindent` puts a material to `\everypar` in order to next + paragraph will be without indentation. It is useful after titles. + If you dislike this feature then you can say `\let\_firtnoindent=\relax`. + The \`\_wipeepar` removes the material from `\everypar`. + \_cod ----------------------------- + +\_def \_firstnoindent {\_global\_everypar={\_wipeepar \_setbox7=\_lastbox}} +\_def \_wipeepar {\_global\_everypar={}} + + \_doc ----------------------------- + The `\mark` (for running heads) is used in `\_printsection` only. We + suppose that chapters will be printed after `\vfil\break`, so user can + implement chapter titles for running headers directly by macros, no + `\mark` mechanism is needed. But sections need `\mark`s. And they can be + mixed with chapter's running heads, of course. + + The \`\_insermark``{<title text>}` saves `\mark` in the format + `{<title-num>} {<title-text>}`, so it can be printed \"as is" in + `\headline` (see the space between them), or you can define a formating + macro with two parameters for processing these data, if you need it. + \_cod ----------------------------- + +\_def\_insertmark#1{\_mark{{\_ifnonum\_else\_therefnum\_fi} {\_unexpanded{#1}}}} + + \_doc ----------------------------- + \OpTeX/ sets `\headline={}` by default, so no running headings are printed. + You can activate the running headings by following code, for example: + \begtt + \addto\_chapx {\_edef\_runningchap {\_thechapnum: \_unexpanded\_ea{\_savedtitle}}} + \def \formathead #1#2{\isempty{#1}\iffalse #1: #2\fi} + \headline = {% + \ifodd \pageno + \hfil \ea\formathead\firstmark{}{}% + \else + Chapter: \runningchap \hfil + \fi + } + \endtt + The \`\caption``/<letter>` uses `\_<letter>num` counter. + The group opened by `\caption` is finalized by first `\par` from + empty line or from `\vskip` or from `\endinsert`. + The `\_printcaption<letter>` is called, it starts with + printing of the caption.\nl + The \`\cskip` macro inserts nobreakable vertical space between caption and + the object. + \_cod ----------------------------- + +\_def\_caption/#1{\_def\_tmpa{#1}\_nospaceafter \_capA} +\_optdef\_capA []{\_trylabel \_incaption} +\_def\_incaption {\_bgroup + \_ifcsname _\_tmpa num\_endcsname \_ea\_incr \_csname _\_tmpa num\_endcsname + \_else \_opwarning{Unknown caption /\_tmpa}\_fi + \_edef\_thecapnum {\_csname _the\_tmpa num\_endcsname}% + \_edef\_thecaptitle{\_mtext{\_tmpa}}% + \_ifcsname _everycaption\_tmpa\_endcsname + \_ea\_the \_csname _everycaption\_tmpa\_endcsname \_fi + \_def\_par{\_nbpar\_egroup}\_let\par=\_par + \_cs{_printcaption\_tmpa}% +} +\_def \_cskip {\_par\_nobreak\_medskip} % space between caption and the object + +\_public \caption \cskip ; + + \_doc ----------------------------- + The \`\_printcaptiont` and \`\_printcaptionf` macros start in vertical mode. + They switch to horizontal mode and use `\_wlabel\_thecapnum` (in order to + make reference and hyperlink destination) a they can use: + \begitems + * `\_thecaptitle` ... expands to the word Table or Figure (depending on + the current language). + * `\_thecapnum` ... expands to `\the<letter>num` (caption number). + \enditems + \_cod ----------------------------- + +\_def \_printcaptiont {% + \_noindent \_wlabel\_thecapnum {\_bf\_thecaptitle~\_thecapnum}\_enspace + \_narrowlastlinecentered\_iindent +} +\_let \_printcaptionf = \_printcaptiont % caption of figures = caption of tables + + \_doc ----------------------------- + The default format of `\caption` text is paragraph in block narrower by + `\_iindent` and with the last line is centered. This setting is done by + the \`\_narrowlastlinecentered` macro. + \_cod ----------------------------- + +\_def\_narrowlastlinecentered#1{% + \_leftskip=#1plus1fil + \_rightskip=#1plus-1fil + \_parfillskip=0pt plus2fil +} + + \_doc ----------------------------- + \`\eqmark` is processed in display mode (we add `\eqno` primitive) + or in internal mode when `\eqaligno` is used (we don't add `\eqno`). + \_cod ----------------------------- + +\_optdef\_eqmark []{\_trylabel \_ineqmark} +\_def\_ineqmark{\_incr\_dnum + \_ifinner\_else\_eqno \_fi + \_wlabel\_thednum \_thednum +} +\_public \eqmark ; + + \_doc ----------------------------- + The \`\numberedpar` `<letter>{<name>}` is implemented here. + \_cod ----------------------------- + +\_newcount\_counterA \_newcount\_counterB \_newcount\_counterC +\_newcount\_counterD \_newcount\_counterE + +\_def\_resetABCDE {\_counterA=0 \_counterB=0 \_counterC=0 \_counterD=0 \_counterE=0 } + +\_def \_theAnum {\_othe\_chapnum.\_othe\_secnum.\_the\_counterA} +\_def \_theBnum {\_othe\_chapnum.\_othe\_secnum.\_the\_counterB} +\_def \_theCnum {\_othe\_chapnum.\_othe\_secnum.\_the\_counterC} +\_def \_theDnum {\_othe\_chapnum.\_othe\_secnum.\_the\_counterD} +\_def \_theEnum {\_othe\_chapnum.\_othe\_secnum.\_the\_counterE} + +\_def\_numberedpar#1#2{\_ea \_incr \_csname _counter#1\_endcsname + \_def\_tmpa{#1}\_def\_tmpb{#2}\_numberedparparam} +\_optdef\_numberedparparam[]{% + \_ea \_printnumberedpar \_csname _the\_tmpa num\_ea\_endcsname\_ea{\_tmpb}} + +\_public \numberedpar ; + + \_doc ----------------------------- + The \`\_printnumberedpar` `\theXnum {<name>}` opens numbered paragraph and + prints it. The optional parameter is in `\_the\_opt`. You can re-define + it if you need another design. + + `\_printnumberedpar` needs not to be re-defined if you only want to print + Theorems in italic and to insert vertical skips (for example). You can do this + by the following code: + \begtt + \def\theorem {\medskip\bgroup\it \numberedpar A{Theorem}} + \def\endtheorem {\par\egroup\medskip} + + \theorem Let $M$ be... \endtheorem + \endtt + \_cod ----------------------------- + +\_def \_printnumberedpar #1#2{\_par + \_noindent\_wlabel #1% + {\_bf #2 #1\_istoksempty\_opt\_iffalse \_space \_the\_opt \_fi.}\_space + \_ignorespaces +} + +\_endcode % ------------------------------------- + +2020-04-28 \_secfonts etc: \_boldify is last. +2020-04-22 \_chapx, \_secx, \_seccx rewritten +2020-03-14 introduced |