diff options
Diffstat (limited to 'tex/context/base/mkiv/anch-pgr.mkiv')
| -rw-r--r-- | tex/context/base/mkiv/anch-pgr.mkiv | 96 |
1 files changed, 24 insertions, 72 deletions
diff --git a/tex/context/base/mkiv/anch-pgr.mkiv b/tex/context/base/mkiv/anch-pgr.mkiv index a7ad26dff..1a583142e 100644 --- a/tex/context/base/mkiv/anch-pgr.mkiv +++ b/tex/context/base/mkiv/anch-pgr.mkiv @@ -13,18 +13,16 @@ \writestatus{loading}{ConTeXt Anchoring Macros / Grapics} -%D Before we come to graphics support, we have to make sure of -%D the reference point on the page. The next macros do so and -%D are hooked into the page building routine. +%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}{1.001} \unprotect -%D A few more low level macros take care of defining and recalling -%D actions. Actions are saved globally! The lists can become quite -%D long because there can be lots of parameters passed on so we -%D clean up the list afterwards. +%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 @@ -91,22 +89,15 @@ \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 -%D for later execution. This collection is especially handy -%D when we want to move actions to a specific layer. Such -%D series of actions are stored in a macro that is cleaned up -%D after each invocation. +%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 - % \iflocalpositioning - % % erase - % \expandafter\let\csname\??positioncleanup\currentpositionaction\endcsname\empty - % \else - % globalize expansion cleans up - \setxvalue{\??positioncleanup\currentpositionaction}{\csname\??positioncleanup\currentpositionaction\endcsname}% - % \fi + \setxvalue{\??positioncleanup\currentpositionaction}{\csname\??positioncleanup\currentpositionaction\endcsname}% \fi} \def\handlepositionaction#1\with#2\on#3% ugly @@ -124,10 +115,9 @@ \fi \endgroup} -%D The first version of this module implemented head and tail -%D anchors. Currently we stick to just one anchor and derive -%D the head and tail anchors from this one. We set these -%D anchors before and after each page. +%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 @@ -160,7 +150,7 @@ {\begingroup \setbox\scratchbox\emptyhbox \ht\scratchbox\textheight - \dp\scratchbox\zeropoint + \dp\scratchbox\zeropoint % redundant \wd\scratchbox\makeupwidth \anch_mark_text_box\scratchbox \box\scratchbox @@ -172,9 +162,8 @@ %D \macros %D {positionoverlay,startpositionoverlay} %D -%D As long as we're dealing with graphics it makes much sense -%D to use the available overlay mechanism. For this purpose, we -%D define some dedicated overlay extensions. +%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}] @@ -213,27 +202,18 @@ %D %\getbuffer[graphic,sample,text] %D \stoplinecorrection %D -%D The graphic is defined in the following way, using some -%D macros defined in an auxiliary \METAPOST\ module that is -%D preloaded. +%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 -%D look complicated, +%D The rest of the definitions concerning such overlays may look complicated, \let\currentpositionoverlay\empty -%D Position actions are automatically executed when a position -%D is set. - -% \newcount\localpositionnumber % incremented elsewhere -% \newif\iflocalpositioning -% -% \def\textbackgroundoverlay#1{\iflocalpositioning\v!local\else\v!text\fi#1} -% \def\MPanchornumber {\the\iflocalpositioning\localpositionnumber\else\realpageno\fi} +%D Position actions are automatically executed when a position is set. \def\textbackgroundoverlay#1{\v!text#1} \def\MPanchornumber {\the\realpageno} @@ -327,35 +307,8 @@ \unexpanded\def\stoppositionoverlay {\let\currentpositionoverlay\empty} -% needs checking if still needed -% -% \def\resetpositionoverlay#1% -% {\anch_positions_set_action{#1::\MPanchoridentifier::}{}} -% -% \def\handlepositionboxes#1#2#3% -% {\handlepositionaction\dohandlepositionboxes\with{#1}{#2}{#3}\on{#2}} -% -% \def\doinsertpositionboxes#1#2#3% pos tag setups -% {\ifnum\MPp{#1}=\realpageno\relax % can be sped up -% \executeifdefined{\MPoverlayposprefix#1}\gobblethreearguments{#1}{#2}{#3}% not used -% \fi} -% -% \appendtoks -% \let\dohandlepositionboxes\doinsertpositionboxes % was handle ? -% \to \everyinsertpositionaction -% -% \def\docleanpositionboxes#1#2#3% pos tag setups -% {\ifnum\MPp{#1}<\realpageno \else -% \noexpand \dohandlepositionboxes{#1}{#2}{#3}% reinsert -% \fi} -% -% \appendtoks -% \let\dohandlepositionboxes\docleanpositionboxes -% \to \everycleanpositionaction - -%D A position graphic is a normal (non||reused) \METAPOST\ -%D graphic, used immediately, with zero dimensions, so that a -%D sequence of them does not harm. +%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} @@ -505,8 +458,7 @@ % Helpers: -\def\MPgetposboxes #1#2{\clf_fetchposboxes {#1}{#2}\realpageno} -\def\MPgetmultipars #1#2{\clf_fetchmultipar {#1}{#2}\realpageno} -\def\MPgetmultishapes#1#2{\clf_fetchmultishape{#1}{#2}\realpageno} +\def\MPgetposboxes #1#2{\clf_fetchposboxes{#1}{#2}\realpageno} +\def\MPgetmultipars#1#2{\clf_fetchmultipar{#1}{#2}\realpageno} \protect \endinput |