From 510e24ff93e1d12670e0eadcf5b46aa257c7d507 Mon Sep 17 00:00:00 2001 From: Karl Berry Date: Fri, 4 Dec 2020 22:24:00 +0000 Subject: pbalance (4dec20) git-svn-id: svn://tug.org/texlive/trunk@57067 c570f23f-e606-0410-a88d-b1316a301751 --- Master/texmf-dist/tex/latex/pbalance/pbalance.sty | 672 ++++++++++++++++++++++ 1 file changed, 672 insertions(+) create mode 100644 Master/texmf-dist/tex/latex/pbalance/pbalance.sty (limited to 'Master/texmf-dist/tex/latex/pbalance') diff --git a/Master/texmf-dist/tex/latex/pbalance/pbalance.sty b/Master/texmf-dist/tex/latex/pbalance/pbalance.sty new file mode 100644 index 00000000000..e7d9dde4c9d --- /dev/null +++ b/Master/texmf-dist/tex/latex/pbalance/pbalance.sty @@ -0,0 +1,672 @@ +%% +%% This is file `pbalance.sty', +%% generated with the docstrip utility. +%% +%% The original source files were: +%% +%% pbalance.dtx (with options: `package') +%% Copyright 2020 Nelson Lago +%% +%% This work may be distributed and/or modified under the conditions of the +%% LaTeX Project Public License, either version 1.3 of this license or (at +%% your option) any later version. The latest version of this license can be +%% found at http://www.latex-project.org/lppl.txt and version 1.3 or later +%% is part of all distributions of LaTeX version 2005/12/01 or later. +%% +%% This work has the LPPL maintenance status `maintained'. +%% +%% The Current Maintainer of this work is Nelson Lago . +%% +\NeedsTeXFormat{LaTeX2e}[2015/01/01] +\ProvidesPackage{pbalance}[2020/12/03 v1.0 Poor man's balance] + +\RequirePackage{etoolbox} +\RequirePackage{expl3} +\RequirePackage{atbegshi} % Manipulate the page output routine +\RequirePackage{atveryend} % Write to the aux file after processing ends +\RequirePackage{zref-abspage} % Figure out the current page + +\AtEndOfPackage{\RequirePackage{balance}} + +\gdef \@reinserts{% + \ifvbox\@kludgeins\insert\@kludgeins + {\unvbox\@kludgeins}\fi + \ifvoid\footins\else\insert\footins{\unvbox\footins}\fi +} + +\providetoggle{@PBstabilized} +\providetoggle{@PBimpossible} + +\newtoggle{@PBdraft} +\DeclareOption{draft}{\toggletrue{@PBdraft}} +\ProcessOptions\relax + + + +\AtBeginDocument{ + \@PBifShouldBalanceNascentPage + {\@PBStartBalancing} + {} +} + +\AtBeginShipout{ + \@PBifShouldBalanceNascentPage + {\@PBStartBalancing} + {} +} + +\newcommand\@PBifShouldBalanceNascentPage[2]{ + \ifboolexpr + { + togl {@PBdraft} + or not togl {@PBstabilized} + or test {\ifdefvoid{\@PBprevLastPage}} + } + {#2} + { + % abspage refers to the finished page, not the nascent page + \ifnumcomp{\@PBprevLastPage - 1}{=}{\value{abspage}} + {#1} + {#2} + } +} + +\newcommand\shrinkLastPage[1]{\dimgdef\@PBslack{#1}} + +\newcommand\@PBStartBalancing{ + \ifdefvoid{\@PBslack} + {\@PBautomaticBalance} + {\@PBshrinkPage} +} + +\newcommand\@PBautomaticBalance{ + \@PBifBalancePossible + { + \@PBifBalancePkgPossible + {\balance} % easy peasy, use the balance package + { + \@PBifPoorBalancePossible + { + % use the poor man's balance algorithm + \@PBcalculateShrinkage + \@PBshrinkPage + } + {} + } + } + {} +} + +\newcommand\@PBcalculateShrinkage{ + + % Let's use some shorter names, please + \dimdef\@PBtmpH{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}Height}} + \dimdef\@PBtmpUL{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}UsedLeft}} + \dimdef\@PBtmpUR{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}UsedRight}} + + \dimdef\@PBtmpLH{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}LeftHeight}} + \dimdef\@PBtmpLFH{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}LeftFloatsHeight}} + \dimdef\@PBtmpRH{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}RightHeight}} + \dimdef\@PBtmpRFH{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}RightFloatsHeight}} + + % Figure out the amount of unused space on the last page (both + % cols); we will reduce the first column height by half that amount + \dimgdef\@PBslack{2\dimexpr\@PBtmpH\relax - \@PBtmpUL - \@PBtmpUR} + \dimgdef\@PBslack{.5\dimexpr\@PBslack\relax} + + % Actually, I lied. While half, as said above, sometimes yields + % perfectly balanced columns, that is often not the case (the page + % may have an odd number of lines, or textheight may not be a + % multiple of baselineskip, or there may be glues etc.). Sometimes + % the difference is very small, less than a line, which does not + % look good at all, and sometimes the right column is slightly + % higher than the left, which is also not ideal. Here, we force + % the left column to always be somewhat taller than the left; the + % result is often ``better''. + \dimgdef\@PBslack{\@PBslack - 1.5\baselineskip} + + % If necessary, reduce @PBslack to prevent LaTeX from adding a page + \@PBsafetyCheck +} + +\def\@PBshrinkPage{ + % Zero obviously means ``do nothing''. We could + % ``enlarge'' by 0, but IDK, maybe that would + % trigger another LaTeX pass or something. + \ifdimcomp{\@PBslack}{=}{0pt} + {} + { + % Shrink the first column + \enlargethispage{-\@PBslack} + + % Modify the behavior of \@outputdblcol + % to raise footnotes in the second column. + \global\let\@PBbalanceSecondColumn\@PBrealBalanceSecondColumn + } +} + +\pretocmd{\@outputdblcol}{\@PBbalanceSecondColumn}{}{} + +\let\@PBbalanceSecondColumn\relax + +\def\@PBrealBalanceSecondColumn{ + \if@firstcolumn + % Affects the next column + \global\let\@PBorigtextbottom\@textbottom + \gdef\@textbottom{\vskip \@PBslack plus .0001fil minus 10000fill\relax \@PBorigtextbottom} + \else + % Back to normal before starting the next page + \global\let\@textbottom\@PBorigtextbottom + \global\let\@PBbalanceSecondColumn\relax + \fi +} + + + +\newcommand\@PBifmidfloat[2]{\ifx\@midlist\empty #2\else #1\fi} +\newcommand\@PBiftopfloat[2]{\ifx\@toplist\empty #2\else #1\fi} +\newcommand\@PBifbotfloat[2]{\ifx\@botlist\empty #2\else #1\fi} +\newcommand\@PBiffootnote[2]{\ifvoid\footins #2\else #1\fi} +\newcommand\@PBiffloatcol[2]{\if@fcolmade #1\else #2\fi} +%%%\newcommand\@PBifdbltopfloat[2]{\ifx\@dbltoplist\empty #2\else #1\fi} +\newcommand\@PBifdblbotfloat[2]{% + \ifdefvoid{\@dblbotlist} + {#2} + {\ifx\@dblbotlist\empty #2\else #1\fi}% +} + +\newtoggle{@PBtmpHasFootnotes} +\newtoggle{@PBtmpHasFloats} +\newtoggle{@PBtmpHasMarginpars} + +\def\@PBcollectPageInfo{ + + \ifboolexpr + { + test {\@PBifmidfloat} or test {\@PBiftopfloat} or + test {\@PBifbotfloat} or test {\@PBifdblbotfloat} + } + {\global\toggletrue{@PBtmpHasFloats}} + {} + + \@PBiffootnote + {\global\toggletrue{@PBtmpHasFootnotes}} + {} +} + +\pretocmd{\@makecol}{\@PBcollectPageInfo}{}{} + +\pretocmd{\@addmarginpar}{\global\toggletrue{@PBtmpHasMarginpars}}{}{} + + +\ExplSyntaxOn +\seq_gclear_new:N \@PBtmpLeftFloatHeights +\seq_gclear_new:N \@PBtmpLeftFloatSpacesBelow +\def\@PBcollectFloatHeights{ + \if@firstcolumn + \dimdef\@PBfloatHeight{\@textfloatsheight - \@PBtmpHeightBefore} + \ifdimcomp{\@PBfloatHeight}{>}{0pt} + { + \global\seq_put_right:NV \@PBtmpLeftFloatHeights \@PBfloatHeight + + \dimdef\@PBspaceBelow{\@colroom - \@pageht - \@PBfloatHeight} + % within \@addtocurcol, \@pageht corresponds to all + % currently used space in the column, including footnotes + % (check \@specialoutput in the LaTeX kernel). Let's + % exclude the footnotes, we only want the space below + % the float. + \ifvoid\footins\else + \dimdef\@PBspaceBelow{\@PBspaceBelow + \ht\footins + \skip\footins + \dp\footins} + \fi + + % No idea why, but this can happen; maybe because of the page depth? + \ifdimcomp{\@PBspaceBelow}{<}{0pt} + {\dimdef\@PBspaceBelow{0pt}} + {} + + \global\seq_put_right:NV \@PBtmpLeftFloatSpacesBelow \@PBspaceBelow + } + {} + \fi +} +\ExplSyntaxOff + +\pretocmd{\@addtocurcol}{\dimgdef{\@PBtmpHeightBefore}{\@textfloatsheight}}{}{} +\apptocmd{\@addtocurcol}{\@PBcollectFloatHeights}{}{} + + +\newtoggle{@PBtmpHasFloatcol} +\newtoggle{@PBtmpIsFloatPage} + +\newcommand\@PBcollectColumnInfo{ + + \if@firstcolumn + + \@PBiffloatcol + {\global\toggletrue{@PBtmpHasFloatcol}} + {} + + % Available vertical space excluding + % dblfloats; the same for both columns + \dimgdef\@PBtmpHeight{\@colht} + + % Available vertical space excluding top/bottom floats + \dimgdef\@PBtmpLeftHeight{\@colroom} + + % Space used by \texttt{here} floats + \dimgdef\@PBtmpLeftFloatsHeight{\@textfloatsheight} + + \else + + \@PBiffloatcol + { + \iftoggle{@PBtmpHasFloatcol} + {\global\toggletrue{@PBtmpIsFloatPage}} + {\global\toggletrue{@PBtmpHasFloatcol}} + } + {} + + \dimgdef\@PBtmpRightHeight{\@colroom} + \dimgdef\@PBtmpRightFloatsHeight{\@textfloatsheight} + + \setbox\@tempboxa=\copy\@leftcolumn + \setbox\@tempboxa=\vbox{\unvbox\@tempboxa\unskip\unskip} + \dimgdef\@PBtmpUsedLeft{\ht\@tempboxa\relax} + + \setbox\@tempboxa=\copy\@outputbox + \setbox\@tempboxa=\vbox{\unvbox\@tempboxa\unskip\unskip} + \dimgdef\@PBtmpUsedRight{\ht\@tempboxa\relax} + \fi +} + +\pretocmd{\@outputdblcol}{\@PBcollectColumnInfo}{}{} + +\AtEndOfPackage{ + \pretocmd{\@BAdblcol}{\@PBcollectColumnInfo}{}{} + % Revert \balance before next page if it exists (it might be a float page) + \patchcmd{\@BAdblcol}{\endgroup}{\endgroup\nobalance}{}{} +} + + +\ExplSyntaxOn +\AtBeginShipout{ + \ifboolexpr + { + % A float page is not the last text page, ignore + togl {@PBtmpIsFloatPage} + or + % A page with a float column on the left and an empty + % column on the right is not the last text page, ignore + ( + togl {@PBtmpHasFloatcol} + and + test {\ifdimcomp{\@PBtmpUsedRight}{=}{\topskip}} + ) + } + {} + { + % This page is a candidate to be the last page + \xdef\@PBlastPage{\the\value{abspage}} + \@PBcopyPageData{tmp}{candidate} + } + + % Reset before processing next page + \global\togglefalse{@PBtmpHasFloats} + \global\togglefalse{@PBtmpHasFloatcol} + \global\togglefalse{@PBtmpHasFootnotes} + \global\togglefalse{@PBtmpHasMarginpars} + \global\togglefalse{@PBtmpIsFloatPage} + + \seq_gclear_new:N \@PBtmpLeftFloatHeights + \seq_gclear_new:N \@PBtmpLeftFloatSpacesBelow +} +\ExplSyntaxOff + + +\AfterLastShipout{\@PBcopyPageData{candidate}{pg\@Roman{\@PBlastPage}}} + + +\AfterLastShipout{ + % Reset \@PBimpossible if we are in draft mode, + % so the user can start over if they want to. + \iftoggle{@PBdraft}{\togglefalse{@PBimpossible}}{} + + \ifboolexpr{togl {@PBdraft} or togl {@PBimpossible}} + {} + { + \ifdefvoid{\@PBprevLastPage} + {\@PBsaveUnbalancedInfo\@PBnotifyRerun} % First pass + { + \iftoggle{@PBstabilized} + {\@PBmanageBalancingPasses} + { + \@PBifSomethingChanged[unbal] + % Document still changing; discard data from previous pass + {\@PBsaveUnbalancedInfo[update]\@PBnotifyRerun} + % No changes, so let's balance from now on (once @PBstabilized + % becomes true, it never reverts back to false, unless the aux + % file is deleted). + {\toggletrue{@PBstabilized}\@PBsaveUnbalancedInfo\@PBnotifyRerun} + } + } + \@PBsaveToggle{@PBstabilized} + } + + \@PBsaveToggle{@PBimpossible} + \immediate\write\@mainaux{\gdef\string\@PBprevLastPhysPage{\the\value{abspage}}} +} + +\newcommand\@PBmanageBalancingPasses{ + % This is the second pass or later after we started balancing + + \providetoggle{@PBpg\@Roman{\@PBlastPage}alreadyBalanced} + + \iftoggle{@PBpg\@Roman{\@PBlastPage}alreadyBalanced} + { + % Third pass or later; document was already + % balanced, so there should be no more changes + \@PBifSomethingChanged + % The document has changed, so we need to measure + % stuff again; clear aux file and start over. + {\@PBnotifyRerun} + % Nothing changed, just write the same info down + {\@PBsaveUnbalancedInfo\@PBsaveBalancedInfo} + } + % Second pass, which means something did change: we have just + % balanced the columns for the first time. + { + \xdef\@tempa{\the\value{abspage}} + \ifboolexpr + { + test {\ifdefstrequal{\@PBprevLastPage}{\@PBlastPage}} + and + test {\ifdefstrequal{\@PBprevLastPhysPage}{\@tempa}} + } + % All is well; save the new info + {\@PBsaveUnbalancedInfo\@PBsaveBalancedInfo} + % Oh, no! As we attempted to balance, we actually changed + % the number of pages (maybe we added a float page, maybe + % we turned the last float page into a text page etc.). If + % we continue, the document might never converge (endless + % ``please rerun LaTeX'' messages). Let's give up balancing. + {\toggletrue{@PBimpossible}} + } +} + + +\newcommand\@PBifBalancePossible[2]{ + \iftoggle{@PBunbalpg\@Roman{\@PBprevLastPage}HasFloatcol} + {#2} + {#1} +} + +\newcommand\@PBifBalancePkgPossible[2]{ + \ifboolexpr + { + togl {@PBunbalpg\@Roman{\@PBprevLastPage}HasFloats} + or + togl {@PBunbalpg\@Roman{\@PBprevLastPage}HasFootnotes} + or + togl {@PBunbalpg\@Roman{\@PBprevLastPage}HasMarginpars} + } + {#2} + {#1} +} + + +\newcommand\@PBifPoorBalancePossible[2]{ + + % Let's use some shorter names, please + \dimdef\@PBtmpH{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}Height}} + \dimdef\@PBtmpUL{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}UsedLeft}} + \dimdef\@PBtmpUR{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}UsedRight}} + + \dimdef\@PBtmpLH{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}LeftHeight}} + \dimdef\@PBtmpLFH{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}LeftFloatsHeight}} + \dimdef\@PBtmpRH{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}RightHeight}} + \dimdef\@PBtmpRFH{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}RightFloatsHeight}} + + \ifboolexpr{ + % Plenty of space on right column, difference is worth it + test {\ifdimcomp{\@PBtmpUL}{>}{\@PBtmpUR + 6\baselineskip}} + or + ( + test {\ifdimcomp{\@PBtmpUL}{>}{4\baselineskip}} + and + test {\ifdimcomp{\@PBtmpUR}{=}{\topskip}} % column is empty + ) + }{#1}{#2} +} + + + +\ExplSyntaxOn +\def\@PBsafetyCheck{ + + % Let's use some shorter names, please + \dimdef\@PBtmpH{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}Height}} + \dimdef\@PBtmpUL{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}UsedLeft}} + \dimdef\@PBtmpUR{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}UsedRight}} + + \dimdef\@PBtmpLH{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}LeftHeight}} + \dimdef\@PBtmpLFH{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}LeftFloatsHeight}} + \dimdef\@PBtmpRH{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}RightHeight}} + \dimdef\@PBtmpRFH{\csuse{@PBunbalpg\@Roman{\@PBprevLastPage}RightFloatsHeight}} + + % Make sure we do not push top/bottom floats out of the left col + \dimdef\@PBmaxSlack{\@PBtmpLH} + + \dimdef\@PBtmpdim{0pt} + + % Start from the bottom + \numdef{\@PBtmpcnt}{\seq_count:c {@PBunbalpg\@Roman{\@PBprevLastPage}LeftFloatHeights}} + \int_while_do:nNnn {\@PBtmpcnt} > {0} + { + + \dimdef\@PBcurrentFloatHeight + {\seq_item:cn {@PBunbalpg\@Roman{\@PBprevLastPage}LeftFloatHeights} {\@PBtmpcnt}} + + \dimdef\@PBcurrentFloatSpaceBelow + {\seq_item:cn {@PBunbalpg\@Roman{\@PBprevLastPage}LeftFloatSpacesBelow} {\@PBtmpcnt}} + + \dimdef{\@PBtmpdim}{\@PBtmpdim + \@PBcurrentFloatHeight} + + \ifboolexpr + { + % Does the float fit in the second column? + test {\ifdimcomp{\@PBtmpdim}{<}{\@PBtmpRH - \@PBtmpRFH}} + and + % Is there something above this float, i.e., if we move + % this float to the next column, will anything remain? + test + { + \ifdimcomp + {\@PBcurrentFloatSpaceBelow + \@PBcurrentFloatHeight} + {<} + {\@PBtmpLH - 6\baselineskip} + } + } + {\numdef{\@PBtmpcnt}{\@PBtmpcnt - 1}} % this one is ok; check next + { + % this one should not be moved, we found the limit + \ifdimcomp{\@PBmaxSlack}{>}{\@PBcurrentFloatSpaceBelow} + {\dimdef{\@PBmaxSlack}{\@PBcurrentFloatSpaceBelow}} + {} + \numdef{\@PBtmpcnt}{0} % exit the loop + } + } + + \ifdimcomp{\@PBmaxSlack}{<}{\@PBslack} + {\dimgdef{\@PBslack}{\@PBmaxSlack}} + {} +} +\ExplSyntaxOff + +\newcommand\@PBifSomethingChanged[3][bal]{ + \ifdefstrequal{\@PBprevLastPage}{\@PBlastPage} + { + \@PBifPageDataMatches + {pg\@Roman{\@PBlastPage}} + {#1pg\@Roman{\@PBlastPage}} + {#3} + {#2} + } + {#2} +} + +\newcommand\@PBifPageDataMatches[4]{ + \ifboolexpr{ + test {\@PBifTogglesMatch{@PB#1HasFloats}{@PB#2HasFloats}} + and test {\@PBifTogglesMatch{@PB#1HasFloatcol}{@PB#2HasFloatcol}} + and test {\@PBifTogglesMatch{@PB#1HasFootnotes}{@PB#2HasFootnotes}} + and test {\@PBifTogglesMatch{@PB#1HasMarginpars}{@PB#2HasMarginpars}} + and test {\@PBifDimensionsMatch{@PB#1Height}{@PB#2Height}} + and test {\@PBifDimensionsMatch{@PB#1LeftHeight}{@PB#2LeftHeight}} + and test {\@PBifDimensionsMatch{@PB#1RightHeight}{@PB#2RightHeight}} + and test {\@PBifDimensionsMatch{@PB#1UsedLeft}{@PB#2UsedLeft}} + and test {\@PBifDimensionsMatch{@PB#1UsedRight}{@PB#2UsedRight}} + } + {#3} + {#4} +} + +\newcommand\@PBifTogglesMatch[4]{ + \ifboolexpr{(togl{#1} or not togl{#2}) and (togl{#2} or not togl{#1})} + {#3} + {#4} +} + +\newcommand\@PBifDimensionsMatch[4]{ + \ifdimcomp{\csuse{#1}}{=}{\csuse{#2}} + {#3} + {#4} +} + +\newcommand\@PBsaveUnbalancedInfo[1][]{ + + \immediate\write\@mainaux{\gdef\string\@PBprevLastPage{\@PBlastPage}} + + \ifboolexpr{test {\ifdefvoid{\@PBprevLastPage}} or test {\ifstrequal{#1}{update}}} + % Columns are currently unbalanced, either because this is + % the first pass (we do not have any previous information) + % or because the document has not stabilized yet, so any + % previous information is unreliable. Save the information + % we just collected as ``unbalanced''. + {\@PBsavePageDataAs{pg\@Roman{\@PBlastPage}}{unbalpg\@Roman{\@PBlastPage}}} + % Not the first pass, so columns are possibly balanced; + % to save the unbalanced information, repeat what was + % gathered during the first pass. + {\@PBsavePageData{unbalpg\@Roman{\@PBprevLastPage}}} +} + +\def\@PBsaveBalancedInfo{ + \global\toggletrue{@PBpg\@Roman{\@PBlastPage}alreadyBalanced} + \@PBsaveToggle{@PBpg\@Roman{\@PBlastPage}alreadyBalanced} + + \@PBsavePageDataAs{pg\@Roman{\@PBlastPage}}{balpg\@Roman{\@PBlastPage}} +} + +\def\@PBnotifyRerun{ + \AtVeryEndDocument{ + \PackageWarningNoLine{pbalance} + {Last page columns not balanced. Rerun LaTeX} + } +} + +\ExplSyntaxOn +\newcommand\@PBcopyPageData[2]{ + + \global\providetoggle{@PB#2HasFloats} + \global\providetoggle{@PB#2HasFloatcol} + \global\providetoggle{@PB#2HasFootnotes} + \global\providetoggle{@PB#2HasMarginpars} + + \iftoggle{@PB#1HasFloats} + {\global\toggletrue{@PB#2HasFloats}} + {\global\togglefalse{@PB#2HasFloats}} + + \iftoggle{@PB#1HasFloatcol} + {\global\toggletrue{@PB#2HasFloatcol}} + {\global\togglefalse{@PB#2HasFloatcol}} + + \iftoggle{@PB#1HasFootnotes} + {\global\toggletrue{@PB#2HasFootnotes}} + {\global\togglefalse{@PB#2HasFootnotes}} + + \iftoggle{@PB#1HasMarginpars} + {\global\toggletrue{@PB#2HasMarginpars}} + {\global\togglefalse{@PB#2HasMarginpars}} + + \csdimgdef{@PB#2Height}{\csuse{@PB#1Height}} + \csdimgdef{@PB#2LeftHeight}{\csuse{@PB#1LeftHeight}} + \csdimgdef{@PB#2LeftFloatsHeight}{\csuse{@PB#1LeftFloatsHeight}} + \csdimgdef{@PB#2RightHeight}{\csuse{@PB#1RightHeight}} + \csdimgdef{@PB#2RightFloatsHeight}{\csuse{@PB#1RightFloatsHeight}} + \csdimgdef{@PB#2UsedLeft}{\csuse{@PB#1UsedLeft}} + \csdimgdef{@PB#2UsedRight}{\csuse{@PB#1UsedRight}} + + \seq_gclear_new:c {@PB#2LeftFloatHeights} + \seq_gclear_new:c {@PB#2LeftFloatSpacesBelow} + \seq_gset_eq:cc {@PB#2LeftFloatHeights} {@PB#1LeftFloatHeights} + \seq_gset_eq:cc {@PB#2LeftFloatSpacesBelow} {@PB#1LeftFloatSpacesBelow} +} +\ExplSyntaxOff + +\newcommand\@PBsavePageDataAs[2]{ + \@PBsaveDimAs{@PB#1Height}{@PB#2Height} + \@PBsaveDimAs{@PB#1LeftHeight}{@PB#2LeftHeight} + \@PBsaveDimAs{@PB#1LeftFloatsHeight}{@PB#2LeftFloatsHeight} + \@PBsaveDimAs{@PB#1RightHeight}{@PB#2RightHeight} + \@PBsaveDimAs{@PB#1RightFloatsHeight}{@PB#2RightFloatsHeight} + \@PBsaveDimAs{@PB#1UsedLeft}{@PB#2UsedLeft} + \@PBsaveDimAs{@PB#1UsedRight}{@PB#2UsedRight} + + \@PBsaveToggleAs{@PB#1HasFloats}{@PB#2HasFloats} + \@PBsaveToggleAs{@PB#1HasFloatcol}{@PB#2HasFloatcol} + \@PBsaveToggleAs{@PB#1HasFootnotes}{@PB#2HasFootnotes} + \@PBsaveToggleAs{@PB#1HasMarginpars}{@PB#2HasMarginpars} + + \@PBsaveSeqAs{@PB#1LeftFloatHeights}{@PB#2LeftFloatHeights} + \@PBsaveSeqAs{@PB#1LeftFloatSpacesBelow}{@PB#2LeftFloatSpacesBelow} +} + +\newcommand\@PBsavePageData[1]{ + \@PBsavePageDataAs{#1}{#1} +} + +\newcommand\@PBsaveToggleAs[2]{ + \immediate\write\@mainaux{\providetoggle{#2}} + \iftoggle{#1} + {\immediate\write\@mainaux{\global\toggletrue{#2}}} + {\immediate\write\@mainaux{\global\togglefalse{#2}}} +} + +\newcommand\@PBsaveToggle[1]{ + \@PBsaveToggleAs{#1}{#1} +} + +\newcommand\@PBsaveDimAs[2]{ + \immediate\write\@mainaux{\csdimgdef{#2}{\csuse{#1}}} +} + +\newcommand\@PBsaveDim[1]{ + \@PBsaveDimAs{#1}{#1} +} + +\ExplSyntaxOn +\newcommand\@PBsaveSeqAs[2]{ + \immediate\write\@mainaux{\string\ExplSyntaxOn} + \immediate\write\@mainaux{\string\seq_gclear_new:c {#2}} + \seq_map_inline:cn {#1} + {\immediate\write\@mainaux{\string\global\string\seq_put_right:cn {#2}{##1}}} + \immediate\write\@mainaux{\string\ExplSyntaxOff} +} +\ExplSyntaxOff + +\newcommand\@PBsaveSeq[1]{ + \@PBsaveSeqAs{#1}{#1} +} + +\endinput +%% +%% End of file `pbalance.sty'. -- cgit v1.2.3