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Diffstat (limited to 'tex/context/base/mkiv/anch-tab.mkiv')
| -rw-r--r-- | tex/context/base/mkiv/anch-tab.mkiv | 383 |
1 files changed, 383 insertions, 0 deletions
diff --git a/tex/context/base/mkiv/anch-tab.mkiv b/tex/context/base/mkiv/anch-tab.mkiv new file mode 100644 index 000000000..7e0116cbf --- /dev/null +++ b/tex/context/base/mkiv/anch-tab.mkiv @@ -0,0 +1,383 @@ +%D \module +%D [ file=anch-pgr, % moved from anch-pgr (1999.08.01) +%D version=2011.12.19, % 1999.08.01, +%D title=\CONTEXT\ Anchoring Macros, +%D subtitle=Table Extensions, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See mreadme.pdf for +%C details. + +\writestatus{loading}{ConTeXt Anchoring Macros / Table Extensions} + +%D This is just a playground and functionality might change or even +%D dissappear in favour of better solutions. + +\unprotect + +\newcount\c_anch_tabs + +\unexpanded\def\tabl_tabulate_hook_b + {\iftrialtypesetting\else + \ifpositioning + \ifcase\c_tabl_tabulate_noflines % \ifnum\c_tabl_tabulate_noflines=\c_tabl_tabulate_totalnoflines + \tabl_tabulate_hook_b_first + \else + \tabl_tabulate_hook_b_next + \fi + \fi + \fi} + +\unexpanded\def\tabl_tabulate_hook_e + {\iftrialtypesetting\else + \ifpositioning + \ifcase\c_tabl_tabulate_noflines % \ifnum\c_tabl_tabulate_noflines=\c_tabl_tabulate_totalnoflines + \tabl_tabulate_hook_e_first + \else + \tabl_tabulate_hook_e_next + \fi + \fi + \fi} + +\unexpanded\def\tabl_tabulate_hook_b_first + {\clf_bposcolumnregistered{tabulate:\the\c_anch_tabs:\the\c_tabl_tabulate_column}} + +\unexpanded\def\tabl_tabulate_hook_b_next + {\clf_bposcolumn{tabulate:\the\c_anch_tabs:\the\c_tabl_tabulate_column}} + +\unexpanded\def\tabl_tabulate_hook_e_first + {\clf_eposcolumnregistered} + +\unexpanded\def\tabl_tabulate_hook_e_next + {\clf_eposcolumn} + +% \appendtoks \registerparoptions \to \everypar + +\appendtoks + \global\advance\c_anch_tabs\plusone +\to \everytabulate + +%D Beware, the following code is somewhat weird and experimental and might be +%D dropped or become a loadable module. + +%D \macros +%D {GFC, GTC, GSC} +%D +%D The next macros extend tables and tabulation with backgrounds and position +%D related features. Areas are specified with symbolic names, and symbolic +%D references to the graphics involved. Each table has its own namespace. + +\newconditional\tablehaspositions +\newcount \noftabpositions +\newtoks \posXCtoks + +\def\anch_tabulate_bpos{\bpos} +\def\anch_tabulate_epos{\epos} + +\installcorenamespace{positiontables} + +\def\tbPOSprefix + {\??positiontables\number\noftabpositions:} + +\def\tablepos + {\normalexpanded{\global\posXCtoks\emptytoks\the\posXCtoks}} + +\let\tabulatepos\tablepos + +\unexpanded\def\tbXC {\dosingleempty\anch_tables_XC } +\unexpanded\def\tbGSC{\dosingleempty\anch_tables_GSC} +\unexpanded\def\tbGFC{\dosingleempty\anch_tables_GFC} +\unexpanded\def\tbGTC{\dosingleempty\anch_tables_GTC} + +\def\anch_table_check_state + {\iftrialtypesetting + \global\settrue\tablehaspositions + \firstargumentfalse + \fi} + +\def\anch_tables_XC [#1]{\anch_table_check_state\iffirstargument\anch_tables_indeed_XC [#1]\else\expandafter\fi\NC} +\def\anch_tables_GSC[#1]{\anch_table_check_state\iffirstargument\anch_tables_indeed_GSC[#1]\else\expandafter\NC\fi} +\def\anch_tables_GFC[#1]{\anch_table_check_state\iffirstargument\anch_tables_indeed_GFC[#1]\else\expandafter\NC\fi} +\def\anch_tables_GTC[#1]{\anch_table_check_state\iffirstargument\anch_tables_indeed_GTC[#1]\else\expandafter\NC\fi} + +\def\anch_tables_indeed_XC[#1]% + {{\let\NC\relax\processcommalist[#1]\anch_tables_step_XC}} + +\def\anch_tables_step_XC#1% + {\anch_tables_step_indeed_XC[#1]} + +\def\anch_tables_step_indeed_XC[#1#2]% + {\if#1>\anch_tables_indeed_GFC [#2:#2]\else + \if#1+\anch_tables_indeed_GFC [#2:#2]\else + \if#1<\anch_tables_indeed_GTC [#2:#2]\else + \if#1-\anch_tables_indeed_GTC [#2:#2]\else + \if#1=\anch_tables_indeed_GSC [#2:#2]\else + \anch_tables_indeed_GSC[#1#2:#1#2]\fi\fi\fi\fi\fi} + +\def\anch_tables_indeed_GSC[#1]% + {\processcommalist[#1]\anch_tables_step_GSC} + +\def\anch_tables_step_GSC#1% + {\anch_tables_append_GSC[#1:#1]} + +\def\anch_tables_append_GSC[#1:#2:#3]% + {\doglobal\appendtoks\anch_tables_process_GSC[#1:#2]\to\posXCtoks\NC} + +\def\anch_tables_process_GSC[#1:#2]% + {\remappositionframed{#2}{\tbPOSprefix#1}% + \anch_tabulate_bpos{\tbPOSprefix#1}% + \doglobal\appendtoks\@EA\anch_tabulate_epos\@EA{\tbPOSprefix#1}\to\posXCtoks} + +\def\anch_tables_indeed_GFC[#1]% + {\doglobal\appendtoks\anch_tables_delayed_GFC[#1]\to\posXCtoks\NC} + +\def\anch_tables_delayed_GFC[#1]% + {\processcommalist[#1]\anch_tables_step_GFC} + +\def\anch_tables_step_GFC#1% + {\anch_tables_process_GFC[#1:#1]} + +\def\anch_tables_process_GFC[#1:#2:#3]% + {\remappositionframed{#2}{\tbPOSprefix#1}% + \anch_tabulate_bpos{\tbPOSprefix#1}} + +\def\anch_tables_indeed_GTC[#1]% + {\doglobal\appendtoks\anch_tables_delayed_GTC[#1]\to\posXCtoks\NC} + +\def\anch_tables_delayed_GTC[#1]% + {\doglobal\appendtoks\anch_tables_process_GTC[#1]\to\posXCtoks} + +\def\anch_tables_process_GTC[#1]% + {\processcommalist[#1]\anch_tables_step_GTC} + +\def\anch_tables_step_GTC#1% + {\anch_tables_step_indeed_GTC[#1:#1]} + +\def\anch_tables_step_indeed_GTC[#1:#2]% + {\anch_tabulate_epos{\tbPOSprefix#1}} + +%D The amount of code to support tables and tabulation is rather +%D minimalistic. + +\let\tabulatepos\tablepos + +\def\tabulatenormalpos + {\iftrialtypesetting + % nothing + \else\ifconditional\tablehaspositions + \hss\tabulatepos\hss + \else + % nothing + \fi\fi} + +\def\tabulateequalpos + {\iftrialtypesetting + \tabulateEQ + \else\ifconditional\tablehaspositions + \tabulateEQpos + \else + \tabulateEQ + \fi\fi} + +\def\tabulateEQpos + {\setbox\scratchbox\hbox{\tabulateEQ}% + \hbox to \wd\scratchbox{\hss\kern\zeropoint\tabulatepos\hss}% hpack + \kern-\wd\scratchbox + \box\scratchbox} + +\appendtoks + \global\advance\noftabpositions\plusone + \global\setfalse\tablehaspositions +\to \everytabulate + +% We need to handle paragraphs as well. + +\let\anch_tabulate_flush_epos\relax + +\def\anch_tabulate_bpos_indeed + {\bpos} + +\def\anch_tabulate_epos_indeed#1% + {\ifvoid\b_tabl_tabulate_current\c_tabl_tabulate_column + \epos{#1}% + \glet\anch_tabulate_flush_epos\relax + \else + \gdef\anch_tabulate_flush_epos{\epos{#1}}% + \fi} + +\def\flushtabulatesplitbox + {\box\b_tabl_tabulate + \iftrialtypesetting\else\ifconditional\tablehaspositions\anch_tabulate_flush_epos\fi\fi} + +\appendtoks + \let\anch_tabulate_bpos\anch_tabulate_bpos_indeed % ? + \let\anch_tabulate_epos\anch_tabulate_epos_indeed % ? + \glet\anch_tabulate_flush_epos\relax +\to \everytabulate + +%D In order to prevent potential clashes with abbreviations, postpone the mapping. + +\appendtoks + \let\GSC\tbGSC + \let\GFC\tbGFC + \let\GTC\tbGTC + \let\XC \tbXC +\to \everytabulate + +%D \macros +%D {definepositionframed} +%D +%D The next example show how to provide backgrounds to table cells. First we define +%D some framed backgrounds. +%D +%D \startbuffer +%D \definepositionframed[x][background=color,backgroundcolor=red] +%D \definepositionframed[y][background=color,backgroundcolor=green] +%D \definepositionframed[z][background=color,backgroundcolor=blue] +%D \stopbuffer +%D +%D \typebuffer +%D +%D % \getbuffer +%D +%D \startbuffer +%D \starttabulate[|c|c|c|] +%D \GFC[f:x] this is a small \NC table \NC in which we \NC \FR +%D \NC will demonstrate \GFC[g:z] that this \GTC[g] positioning \NC \MR +%D \GSC[e:y] mechanism also \GTC[f] works quite well \NC in tables \NC \LR +%D \stoptabulate +%D \stopbuffer +%D +%D The table itself defines three areas (a, b and~c) using these frames. +%D +%D \typebuffer +%D % \getbuffer +%D +%D Tables (based on \TABLE) are supported by: + +\def\normalTABLEsimplebar {\unskip\!ttRightGlue&\tablepos&} % | +\def\normalTABLEcomplexbar{\unskip\!ttRightGlue&\omit\tablepos\!ttAlternateVrule} % \| +\def\normalTABLEquote {\unskip\!ttRightGlue&\omit\tablepos&} % " + +\appendtoks + \global\advance\noftabpositions\plusone + \global\setfalse\tablehaspositions +\to \everytable + +%D Since we don't want nameclashes: + +\appendtoks + \let\GSC\tbGSC + \let\GFC\tbGFC + \let\GTC\tbGTC + \let\XC \tbXC +\to \everytable + +%D In the previous example, we could have provided an overlay to the framed definition. +%D A more direct approach is demonstrated below: +%D +%D \startbuffer +%D \def\cw#1{\color[white]{#1}} +%D +%D \startMPpositiongraphic{tableshade} +%D initialize_area(\MPpos{\MPvar{from}},\MPpos{\MPvar{to}}) ; +%D color c ; c := \MPvar{color} ; +%D linear_shade(pxy,0,.4c,.9c) ; +%D anchor_area(\MPanchor{\MPvar{from}}) ; +%D \stopMPpositiongraphic +%D +%D \setMPpositiongraphic{b:x}{tableshade}{from=b:x,to=e:x,color=red} +%D \setMPpositiongraphic{b:y}{tableshade}{from=b:y,to=e:y,color=green} +%D \setMPpositiongraphic{b:z}{tableshade}{from=b:z,to=e:z,color=blue} +%D \stopbuffer +%D +%D \typebuffer \getbuffer +%D +%D The definition of the table looks about the same as the previous one: +%D +%D \startbuffer +%D \starttable[|c|c|c|] +%D \GFC[b:z] \cw{this is a small} \NC \cw{table} \NC in which we \NC \FR +%D \NC \cw{will demonstrate} \GFC[c:y] \cw{that this} \GTC[c] \cw{positioning} \NC \MR +%D \GSC[a:x] \cw{mechanism also} \GTC[b] \cw{works quite well} \NC in tables \NC \LR +%D \stoptable +%D \stopbuffer +%D +%D \typebuffer +%D +%D \getbuffer + +% \definepositionframed[w][background=color,backgroundcolor=yellow] +% \definepositionframed[x][background=color,backgroundcolor=red] +% \definepositionframed[y][background=color,backgroundcolor=green] +% \definepositionframed[z][background=color,backgroundcolor=blue] +% +% \starttabulate[|c|c|c|] +% \NC this is a small \NC table \NC in which we \NC \FR +% \NC will demonstrate \NC that this \NC positioning \NC \MR +% \NC mechanism also \NC works quite well \NC in tables \NC \LR +% \stoptabulate +% +% \starttabulate[|c|c|c|] +% \GFC[f:x] this is a small \GTC table \NC in which we \NC \FR +% \NC will demonstrate \GFC[g:z] that this \GTC[g] positioning \NC \MR +% \GSC[e:y] mechanism also \GTC[f] works quite well \NC in tables \NC \LR +% \stoptabulate +% +% \starttabulate[|c|c|c|] +% \GFC[f:x,d:w] this is a small \GTC[d] table \NC in which we \NC \FR +% \NC will demonstrate \GFC[g:z] that this \GTC[g] positioning \NC \MR +% \GSC[e:y] mechanism also \GTC[f] works quite well \NC in tables \NC \LR +% \stoptabulate +% +% \starttabulate[|c|c|c|] +% \XC[+f:x] this is a small \XC table \NC in which we \NC \FR +% \NC will demonstrate \XC[+g:z] that this \XC[-g] positioning \NC \MR +% \XC[=e:y] mechanism also \XC[-f] works quite well \NC in tables \NC \LR +% \stoptabulate +% +% \starttabulate[|c|c|c|] +% \XC[+f:x,+d:w] this is a small \XC[-d] table \NC in which we \NC \FR +% \NC will demonstrate \XC[+g:z] that this \XC[-g] positioning \NC \MR +% \XC[=e:y] mechanism also \XC[-f] works quite well \NC in tables \NC \LR +% \stoptabulate + +% evt [b:x] +% +% \definepositionframed[x][background=color,fillcolor=red] +% \definepositionframed[y][background=color,fillcolor=green] +% \definepositionframed[z][background=color,fillcolor=blue] + +\unexpanded\def\remappositionframed#1#2% from to + {\copyposition{b:#1}{b:#2}% + \copyposition{e:#1}{e:#2}% + \anch_positions_set_action{b:#2}{\dopositionaction{b:#1}}} + +\unexpanded\def\definepositionframed + {\dodoubleargument\anch_framed_define} + +\def\anch_framed_define[#1][#2]% + {\anch_positions_set_action{b:#1}{\anch_framed_handle[#1][#2]}} + +\unexpanded\def\anch_framed_handle + {\bgroup + \anch_framed_indeed} + +\unexpanded\def\positionframed + {\bgroup + \dodoubleempty\anch_framed_indeed} + +\def\anch_framed_indeed[#1][#2]% + {\setbox\scratchbox\hpack + {\scratchwidth \dimexpr\MPx{e:#1}-\MPx{b:#1}\relax + \scratchdepth \dimexpr\MPy{b:#1}-\MPy{e:#1}+\MPd{e:#1}\relax + \scratchheight\dimexpr\scratchdepth+\MPh{b:#1}\relax + \lower\scratchdepth\hpack + {\framed[\c!width=\scratchwidth,\c!height=\scratchheight,\c!offset=\v!overlay,#2]{}}}% + \smashedbox\scratchbox + \egroup} + +\protect \endinput |