diff options
Diffstat (limited to 'tex/context/base/mkiv/anch-pgr.mkxl')
| -rw-r--r-- | tex/context/base/mkiv/anch-pgr.mkxl | 445 |
1 files changed, 0 insertions, 445 deletions
diff --git a/tex/context/base/mkiv/anch-pgr.mkxl b/tex/context/base/mkiv/anch-pgr.mkxl deleted file mode 100644 index 3439fd5a2..000000000 --- a/tex/context/base/mkiv/anch-pgr.mkxl +++ /dev/null @@ -1,445 +0,0 @@ -%D \module -%D [ file=anch-pgr, % split off core-pos -%D version=1999.08.01, -%D title=\CONTEXT\ Anchoring Macros, -%D subtitle=Positioning Graphics, -%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 / Grapics} - -%D Before we come to graphics support, we have to make sure of the reference point -%D on the page. The next macros do so and are hooked into the page building routine. - -\registerctxluafile{anch-pgr}{} - -\unprotect - -%D A few more low level macros take care of defining and recalling actions. Actions -%D are saved globally! The lists can become quite long because there can be lots of -%D parameters passed on so we clean up the list afterwards. - -\newtoks\everypositionaction -\newtoks\everyinsertpositionaction -\newtoks\everycleanpositionaction - -\installcorenamespace{positionaction} -\installcorenamespace{positioncleanup} - -\protected\def\anch_positions_set_action#1% - {\expandafter\gdef\csname\??positionaction#1\endcsname} % nicely gobbles spaces - -\permanent\protected\def\doifpositionaction#1% - {\ifcsname\??positionaction#1\endcsname - \expandafter\firstofoneargument - \else - \expandafter\gobbleoneargument - \fi} - -\permanent\protected\def\doifelsepositionaction#1% - {\ifcsname\??positionaction#1\endcsname - \expandafter\firstoftwoarguments - \else - \expandafter\secondoftwoarguments - \fi} - -\aliased\let\doifpositionactionelse\doifelsepositionaction - -\protected\def\dopositionaction#1% - {\edef\currentpositionaction{#1}% - \ifcsname\??positionaction\currentpositionaction\endcsname - \anch_positions_action_indeed - \fi} - -\def\anch_positions_action_indeed - {\doifelseposition\currentpositionaction - \anch_positions_action_indeed_yes - \anch_positions_action_indeed_nop} - -\def\anch_positions_action_indeed_nop - {\anch_positions_trace_action_nop} - -\def\anch_positions_action_indeed_yes % we need a way to figure out if we have actions - {\begingroup - \setbox\scratchbox\hbox % \hpack - {\anch_positions_trace_action_yes - \the\everyinsertpositionaction - \the\everypositionaction - \begincsname\??positionaction\currentpositionaction\endcsname - \anch_positions_cleanup_action}% - \smashedbox\scratchbox % smashing is really needed else we get problems with too big overlays - \endgroup} - -\protected\def\anch_positions_trace_action_nop_indeed - {\anch_positions_trace\clap\darkred{<\currentpositionaction>}} - -\protected\def\anch_positions_trace_action_yes_indeed - {\anch_positions_trace\clap\darkgreen{<\currentpositionaction>}} - -\let\anch_positions_trace_action_nop\relax -\let\anch_positions_trace_action_yes\relax - -\appendtoks - \let\anch_positions_trace_action_nop\anch_positions_trace_action_nop_indeed - \let\anch_positions_trace_action_yes\anch_positions_trace_action_yes_indeed -\to \t_anch_positions_tracers - -%D Here the complication has to do with collecting actions for later execution. This -%D collection is especially handy when we want to move actions to a specific layer. -%D Such series of actions are stored in a macro that is cleaned up after each -%D invocation. - -\def\anch_positions_cleanup_action % not in trialtypesetting - {\ifcsname\??positioncleanup\currentpositionaction\endcsname - \the\everycleanpositionaction - \setxvalue{\??positioncleanup\currentpositionaction}{\csname\??positioncleanup\currentpositionaction\endcsname}% - \fi} - -\permanent\protected\def\handlepositionaction#1\with#2\on#3% ugly, will change - {\begingroup - \edef\currentpositionanchor - {\ifempty\currentpositionoverlay#3\else\currentpositionoverlay::\MPanchoridentifier\fi}% - \normalexpanded{\anch_positions_set_action{\currentpositionanchor}{\noexpand\getvalue{\??positioncleanup\currentpositionanchor}}}% - \let#1\relax - \ifcsname\??positioncleanup\currentpositionanchor\endcsname - \setxvalue{\??positioncleanup\currentpositionanchor}% - {\csname\??positioncleanup\currentpositionanchor\endcsname#1#2}% - \else - \setxvalue{\??positioncleanup\currentpositionanchor}% - {#1#2}% - \fi - \endgroup} - -%D The first version of this module implemented head and tail anchors. Currently we -%D stick to just one anchor and derive the head and tail anchors from this one. We -%D set these anchors before and after each page. - -\newdimen\c_anch_page_width -\newdimen\c_anch_page_height - -\protected\def\anch_positions_register_page#1% this one is flushed first ! ... can't we avoid this one - {\ifpositioning\ifcase\realpageno\or - \ifdim\c_anch_page_height=\paperheight - \ifdim\c_anch_page_width=\paperwidth - % no change - \else - \c_anch_page_width \paperwidth - \c_anch_page_height\paperheight - \anch_make_page_box{#1}% \ifvbox#1\setbox#1\hpack{\box#1}\fi - \fi - \else - \c_anch_page_width \paperwidth - \c_anch_page_height\paperheight - \anch_make_page_box{#1}% \ifvbox#1\setbox#1\hpack{\box#1}\fi - \fi - \fi\fi} - -\protected\def\anch_positions_place_anchors - {\ifpositioning - \anch_positions_place_anchors_yes - \else - \anch_positions_place_anchors_nop - \fi} - -\def\anch_positions_place_anchors_yes % todo : depth pagebox - {\begingroup - \setbox\scratchbox\emptyhbox - \ht\scratchbox\textheight - \dp\scratchbox\zeropoint % redundant - \wd\scratchbox\makeupwidth - \anch_mark_text_box\scratchbox - \box\scratchbox - \endgroup} - -\def\anch_positions_place_anchors_nop - {\vkern\textheight} - -%D \macros -%D {positionoverlay,startpositionoverlay} -%D -%D As long as we're dealing with graphics it makes much sense to use the available -%D overlay mechanism. For this purpose, we define some dedicated overlay extensions. -%D -%D \startbuffer[sample] -%D \defineoverlay [sample] [\positionoverlay{sample}] -%D -%D \startpositionoverlay{sample} -%D \setMPpositiongraphic{A-1}{connectcenter}{from=A-1,to=A-2} -%D \stoppositionoverlay -%D \stopbuffer -%D -%D \typebuffer[sample] -%D -%D \startbuffer[graphic] -%D \startMPpositiongraphic{connectcenter} -%D path pa, pb ; pair ca, cb ; -%D initialize_box(\MPpos{\MPvar{from}}) ; pa := pxy ; ca := cxy ; -%D initialize_box(\MPpos{\MPvar{to}}) ; pb := pxy ; cb := cxy ; -%D draw pa withcolor red ; -%D draw pb withcolor red ; -%D draw ca -- cb withcolor blue ; -%D anchor_box(\MPanchor{\MPvar{from}}) ; -%D \stopMPpositiongraphic -%D \stopbuffer -%D -%D We can best demonstrate this in an example, say: -%D -%D \startbuffer[text] -%D \framed -%D [backgroundachtergrond=sample,align=middle,width=7cm] -%D {We want to connect \hpos {A-1} {this} word with its -%D grammatical cousin \hpos {A-2} {that}.} -%D \stopbuffer -%D -%D \typebuffer[text] -%D -%D \startlinecorrection -%D %\getbuffer[graphic,sample,text] -%D \stoplinecorrection -%D -%D The graphic is defined in the following way, using some macros defined in an -%D auxiliary \METAPOST\ module that is preloaded. -%D -%D \typebuffer[graphic] - -\def\MPanchoridentifier{mpa} % {mp-anchor} - -%D The rest of the definitions concerning such overlays may look complicated, - -\let\currentpositionoverlay\empty - -%D Position actions are automatically executed when a position is set. - -\def\textbackgroundoverlay#1{\v!text#1} -\def\MPanchornumber {\the\realpageno} - -\permanent\protected\def\positionoverlay % the test prevents too many redundant positions - {\ifpositioning % in (not used) text* position layers - \expandafter\anch_positions_overlay_indeed - \else % also \iftrialtypesetting test here? - \expandafter\gobbleoneargument - \fi} - -\def\anch_positions_overlay_indeed#1% - {\begingroup - \edef\currentpositionoverlay{#1}% - \ifcsname\??positionaction\currentpositionoverlay::\MPanchoridentifier\endcsname - \anch_positions_overlay_compose - \fi - \endgroup} - -\def\MPoverlayanchor#1{\MPpos\MPanchorid} - -\def\anch_positions_overlay_compose - {\vpack to \d_overlay_height - {%\writestatus{!!!}{\currentpositionoverlay/\MPanchoridentifier/\MPanchornumber}% - \edef\MPanchorid{\currentpositionoverlay::\MPanchoridentifier:\MPanchornumber}% realpageno - % \edef\MPanchor##1{\MPpos\MPanchorid}% - \let\MPanchor\MPoverlayanchor % no need to fetch it already, seldom used - \the\everyinsertpositionaction - \copyposition{\currentpositionoverlay::\MPanchoridentifier}\MPanchorid - \setbox\scratchbox\hbox to \d_overlay_width % \hpack - {\dopositionaction{\currentpositionoverlay::\MPanchoridentifier}\hss}% - \ht\scratchbox\d_overlay_height - \dp\scratchbox\zeropoint - \anch_mark_tagged_box\scratchbox\MPanchorid % needs an hbox - \box\scratchbox - \vfill}} - -\permanent\protected\def\positionregionoverlay % shares regions - {\ifpositioning - \expandafter\anch_positions_region_overlay_indeed - \else % also \iftrialtypesetting test here? - \expandafter\gobbletwoarguments - \fi} - -\let\currentpositionregion\empty - -\def\anch_positions_region_overlay_indeed#1#2% - {\begingroup - \edef\currentpositionregion {#1}% - \edef\currentpositionoverlay{#2}% - \ifcsname\??positionaction\currentpositionoverlay::\MPanchoridentifier\endcsname - \anch_positions_region_overlay_compose - \fi - \endgroup} - -\def\anch_positions_region_overlay_compose - {\vpack to \d_overlay_height - {\let\MPanchorid\currentpositionregion - \let\MPanchor\MPoverlayanchor % no need to fetch it already, seldom used - \the\everyinsertpositionaction - \copyposition{\currentpositionoverlay::\MPanchoridentifier}\MPanchorid - \setbox\scratchbox\hbox to \d_overlay_width % \hpack - {\dopositionaction{\currentpositionoverlay::\MPanchoridentifier}\hss}% - \ht\scratchbox\d_overlay_height - \dp\scratchbox\zeropoint - \box\scratchbox - \vfill}} - -% \let\anch_positions_overlay_nop\gobbleoneargument - -\permanent\protected\def\startpositionoverlay - {\iftrialtypesetting - \expandafter\anch_positions_overlay_start_nop - \else - \expandafter\anch_positions_overlay_start_yes - \fi} - -\def\anch_positions_overlay_start_nop#1\stoppositionoverlay - {} - -\ifdefined\checkpositionoverlays \else \let\checkpositionoverlays\relax \fi - -\let\currentpositionoverlay\empty - -\def\anch_positions_overlay_start_yes#1% - {\checkpositionoverlays - \edef\currentpositionoverlay{#1}} - -\permanent\protected\def\stoppositionoverlay - {\let\currentpositionoverlay\empty} - -%D A position graphic is a normal (non||reused) \METAPOST\ graphic, used -%D immediately, with zero dimensions, so that a sequence of them does not harm. - -\installcorenamespace{positiongraphic} -\installcorenamespace{positionmethod} -%installcorenamespace{graphicvariable} - -\newbox\b_anch_positions_graphic - -\permanent\tolerant\protected\def\startMPpositiongraphic#=#*#=#:#3\stopMPpositiongraphic % tag list mpcode - {\setgvalue{\??positiongraphic#1}{\anch_positions_meta_graphic_use{#1}{#2}{#3}}} - -\aliased\let\stopMPpositiongraphic\relax - -\def\anch_positions_meta_graphic_prepare - {\ifcsname\??graphicvariable\currentmpvariableclass:self\endcsname \else - \letvalue{\??graphicvariable\currentmpvariableclass:self}\currentposition - \fi - \ifcsname\??graphicvariable\currentmpvariableclass:from\endcsname \else - \letvalue{\??graphicvariable\currentmpvariableclass:from}\currentposition - \fi} - -\def\anch_positions_meta_graphic_use#1#2#3% - {\begingroup - \meta_prepare_variables{#2}% - \anch_positions_meta_graphic_prepare - \startMPcode#3\stopMPcode - \endgroup} - -\permanent\tolerant\protected\def\MPpositiongraphic#=#*#=% - {\ifcsname\??positionmethod#1\endcsname % method - \expandafter\anch_positions_meta_graphic_direct_method - \orelse\ifcsname\??positiongraphic#1\endcsname - \expandafter\anch_positions_meta_graphic_direct_normal - \else - \expandafter\gobbletwoarguments - \fi{#1}{#2}} - -\def\anch_positions_meta_graphic_direct_method{\anch_positions_meta_graphic_direct\??positionmethod } -\def\anch_positions_meta_graphic_direct_normal{\anch_positions_meta_graphic_direct\??positiongraphic} - -\def\anch_positions_meta_graphic_direct#1#2#3% what tag setups - {\begingroup - \setupMPvariables[#2][#3]% - \edef\currentmpvariableclass{#2}% - \anch_positions_meta_graphic_prepare - \obeyMPboxorigin % do we also set the size ? when needed this must be done in mp ... might change - \enforced\def\MPpositiongraphic{\anch_positions_meta_graphic_nested{#3}}% takes two extra arguments - \setbox\b_anch_positions_graphic\hbox % \hpack - {\ignorespaces\begincsname#1#2\endcsname\removelastspace}% - \smashbox\b_anch_positions_graphic - \box\b_anch_positions_graphic - \endgroup} - -\def\anch_positions_meta_graphic_nested#1#2#3% nesting used in prikkels / pascal (might go away) - {\begingroup - \setupMPvariables[#2][#1,#3]% - \edef\currentmpvariableclass{#2}% - \anch_positions_meta_graphic_prepare - \begincsname\??positiongraphic#2\endcsname - \endgroup}% - -\permanent\def\startMPpositionmethod#1#2\stopMPpositionmethod - {\setgvalue{\??positionmethod#1}{#2}} % todo: var list here - -\aliased\let\stopMPpositionmethod\relax - -%D Simple one position graphics. - -\permanent\tolerant\protected\def\setMPpositiongraphic#=#*#=#*#=% - {\ifempty\currentpositionoverlay - \anch_positions_set_action{#1}{\MPpositiongraphic{#2}{#3}}% - \else % silly can be one - \anch_positions_meta_graphic_handle{#1}{#2}{#3}% - \fi} - -\def\anch_positions_meta_graphic_handle#1#2#3% combine with boxes - {\handlepositionaction\anch_positions_meta_graphic_handle_indeed\with{#1}{#2}{#3}\on{#2}} - -\def\anch_positions_meta_graphic_insert#1#2#3% pos tag setups - {\ifnum\MPp{#1}=\realpageno\relax % extra saveguard - \def\currentposition{#1}\MPpositiongraphic{#2}{#3}% - \fi} - -\let\anch_positions_meta_graphic_handle_indeed\relax - -\appendtoks - \let\anch_positions_meta_graphic_handle_indeed\anch_positions_meta_graphic_insert -\to \everyinsertpositionaction - -\def\anch_positions_meta_graphic_cleanup#1#2#3% pos tag setups - {\ifnum\MPp{#1}<\realpageno \else - \noexpand\anch_positions_meta_graphic_handle_indeed{#1}{#2}{#3}% - \fi} - -\appendtoks - \let\anch_positions_meta_graphic_handle_indeed\anch_positions_meta_graphic_cleanup -\to \everycleanpositionaction - -%D Graphics that span two positions (beware, does not cross pages). - -\permanent\tolerant\protected\def\setMPpositiongraphicrange#=#*#=#*#=#*#=% - {\ifempty\currentpositionoverlay - \anch_positions_set_action{#1}{\MPpositiongraphic{#3}{#4}}% - \else - \anch_positions_meta_graphic_handle_range{#1}{#2}{#3}{#4}% - \fi} - -\def\anch_positions_meta_graphic_handle_range#1#2#3#4% - {\handlepositionaction\anch_positions_meta_graphic_handle_range_indeed\with{#1}{#2}{#3}{#4}\on{#2}} - -\def\anch_positions_meta_graphic_insert_range#1#2#3#4% pos pos tag setups - {\clf_doifelserangeonpage{#1}{#2}\realpageno - {\def\currentposition{#1}% - \MPpositiongraphic{#3}{#4}}% - {}} - -\appendtoks - \let\anch_positions_meta_graphic_handle_range_indeed\anch_positions_meta_graphic_insert_range -\to \everyinsertpositionaction - -\def\anch_positions_meta_graphic_cleanup_range#1#2#3#4% pos tag setups - {\ifnum\MPp{#2}<\realpageno \else - \noexpand \anch_positions_meta_graphic_handle_range_indeed{#1}{#2}{#3}{#4}% - \fi} - -\appendtoks - \let\anch_positions_meta_graphic_handle_range_indeed\anch_positions_meta_graphic_cleanup_range -\to \everycleanpositionaction - -\let\anch_positions_meta_graphic_handle_range_indeed\gobblefourarguments - -% Helpers: - -\permanent\def\MPgetposboxes #1#2{\clf_fetchposboxes{#1}{#2}\realpageno} -\permanent\def\MPgetmultipars#1#2{\clf_fetchmultipar{#1}{#2}\realpageno} - -\protect \endinput |