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Diffstat (limited to 'tex/context/base/core-pos.mkii')
| -rw-r--r-- | tex/context/base/core-pos.mkii | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/tex/context/base/core-pos.mkii b/tex/context/base/core-pos.mkii new file mode 100644 index 000000000..754673cfa --- /dev/null +++ b/tex/context/base/core-pos.mkii @@ -0,0 +1,184 @@ +%D \module +%D [ file=core-pos, +%D version=1999.08.01, +%D title=\CONTEXT\ Core Macros, +%D subtitle=Positioning Support, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA / Hans Hagen \& Ton Otten}] +%C +%C This module is part of the \CONTEXT\ macro||package and is +%C therefore copyrighted by \PRAGMA. See mreadme.pdf for +%C details. + +\unprotect + +%D A unique prefix used for storing data. + +\def\POSprefix{POS::} + +%D Reading form the utility file. + +\def\pxypos {\pospxy} % obsolete +\def\pxyposwhd {\pospxywhd} % obsolete +\def\pxyposplus{\pospxyplus} % obsolete + +\def\resetpositions + {\let\pospxy \gobblefourarguments + \let\pospxywhd \gobblesevenarguments + \let\pospxyplus\gobbleeightarguments} + +\def\setpositions + {\let\pospxy \setpospxy + \let\pospxywhd \setpospxywhd + \let\pospxyplus\setpospxyplus} + +%D We need to initialize. + +\resetpositions + +\addutilityreset{positions} + +%D Core set macros: + +\def\setpospxy#1#2#3#4% + {\@EA\xdef\csname\POSprefix#1\endcsname + {\number#2,% + \the\dimexpr#3\ifnum\positionanchormode=\plusone-\MPx\pageanchor\fi\relax,% + \the\dimexpr#4\ifnum\positionanchormode=\plusone-\MPy\pageanchor\fi\relax}} + +\def\setpospxywhd#1#2#3#4#5#6#7% + {\@EA\xdef\csname\POSprefix#1\endcsname + {\number#2,% + \the\dimexpr#3\ifnum\positionanchormode=\plusone-\MPx\pageanchor\fi\relax,% + \the\dimexpr#4\ifnum\positionanchormode=\plusone-\MPy\pageanchor\fi\relax,% + \the\dimexpr#5\relax,% + \the\dimexpr#6\relax,% + \the\dimexpr#7\relax}} + +\def\setpospxyplus#1#2#3#4#5#6#7#8% + {\@EA\xdef\csname\POSprefix#1\endcsname + {\number#2,% + \the\dimexpr#3\ifnum\positionanchormode=\plusone-\MPx\pageanchor\fi\relax,% + \the\dimexpr#4\ifnum\positionanchormode=\plusone-\MPy\pageanchor\fi\relax,% + \the\dimexpr#5\relax,% + \the\dimexpr#6\relax,% + \the\dimexpr#7\relax,% + #8}} + +%D Sometimes we want to trick the position handler a bit: + +\def\replacepospxywhd#1#2#3#4#5#6#7% + {\@EA\xdef\csname\POSprefix#1\endcsname + {\number#2,% + \the\dimexpr#3\relax,% + \the\dimexpr#4\relax,% + \the\dimexpr#5\relax,% + \the\dimexpr#6\relax,% + \the\dimexpr#7\relax}} + +%D Writing to the utility file. + +\def\dolazysaveposition#1#2#3#4% tag page x y + {\expanded{\writeutilitycommand{\noexpand\pospxy + {#1}{#2}{#3}{#4}}}} + +\def\dolazysavepositionwhd#1#2#3#4#5#6#7% tag page x y w h d + {\expanded{\writeutilitycommand{\noexpand\pospxywhd + {#1}{#2}{#3}{#4}{#5}{#6}{#7}}}} + +\def\dolazysavepositionplus#1#2#3#4#5#6#7#8% tag page x y w h d list + {\expanded{\writeutilitycommand{\noexpand\pospxyplus + {#1}{#2}{#3}{#4}{#5}{#6}{#7}{#8}}}} + +\def\dosaveposition#1#2#3#4% tag page x y + {\expanded{\immediatewriteutilitycommand{\noexpand\pospxy + {#1}{#2}{#3}{#4}}}} + +\def\dosavepositionwhd#1#2#3#4#5#6#7% tag page x y w h d + {\expanded{\immediatewriteutilitycommand{\noexpand\pospxywhd + {#1}{#2}{#3}{#4}{#5}{#6}{#7}}}} + +\def\dosavepositionplus#1#2#3#4#5#6#7#8% tag page x y w h d list + {\expanded{\immediatewriteutilitycommand{\noexpand\pospxyplus + {#1}{#2}{#3}{#4}{#5}{#6}{#7}{#8}}}} + +\def\MPp {\doMPxyhdwlr\doMPp } +\def\MPx {\doMPxyhdwlr\doMPx } +\def\MPy {\doMPxyhdwlr\doMPy } +\def\MPw {\doMPxyhdwlr\doMPw } +\def\MPh {\doMPxyhdwlr\doMPh } +\def\MPd {\doMPxyhdwlr\doMPd } +\def\MPxy {\doMPxyhdwlr\doMPxy } +\def\MPll {\doMPxyhdwlr\doMPll } +\def\MPlr {\doMPxyhdwlr\doMPlr } +\def\MPur {\doMPxyhdwlr\doMPur } +\def\MPul {\doMPxyhdwlr\doMPul } +\def\MPpos{\doMPxyhdwlr\doMPpos} + +\def\doMPp #1,#2,#3,#4,#5,#6,#7\relax{#1} +\def\doMPx #1,#2,#3,#4,#5,#6,#7\relax{#2} +\def\doMPy #1,#2,#3,#4,#5,#6,#7\relax{#3} +\def\doMPw #1,#2,#3,#4,#5,#6,#7\relax{#4} +\def\doMPh #1,#2,#3,#4,#5,#6,#7\relax{#5} +\def\doMPd #1,#2,#3,#4,#5,#6,#7\relax{#6} +\def\doMPxy #1,#2,#3,#4,#5,#6,#7\relax{(#2,#3)} +\def\doMPll #1,#2,#3,#4,#5,#6,#7\relax{(#2,#3-#6)} +\def\doMPlr #1,#2,#3,#4,#5,#6,#7\relax{(#2+#4,#3-#6)} +\def\doMPur #1,#2,#3,#4,#5,#6,#7\relax{(#2+#4,#3+#5)} +\def\doMPul #1,#2,#3,#4,#5,#6,#7\relax{(#2,#3+#5)} +\def\doMPpos#1,#2,#3,#4,#5,#6,#7\relax{#1,#2,#3,#4,#5,#6} + +\def\doMPxyhdwlr#1#2% + {\ifcsname\POSprefix#2\endcsname + \@EA\@EA\@EA#1\csname\POSprefix#2\endcsname,0pt,0pt,0pt,0pt\relax + \else + #10,0pt,0pt,0pt,0pt,0pt,0pt\relax + \fi} + +% \def\doMPxyhdwlr#1#2% evt kan \s!unknown leeg zijn +% {\@EA\@EA\@EA#1\csname\POSprefix +% \ifcsname\POSprefix#2\endcsname#2\else\s!unknown\fi\endcsname +% ,0pt,0pt,0pt,0pt\relax} +% +% \setvalue{\POSprefix\s!unknown}{0,0pt,0pt} + +\def\MPplus {\MPdoplus\doMPplus} +\def\MPrest#1{\MPdoplus\doMPrest{#1}{}} + +\def\MPdoplus#1#2#3#4% + {\ifcsname\POSprefix#2\endcsname + \@EA\@EA\@EA#1\csname\POSprefix#2\endcsname,,,,,,,,,\relax{#3}% + \else + #4% + \fi} + +\def\doMPplus#1,#2,#3,#4,#5,#6,% + {\dodoMPplus} + +\def\dodoMPplus#1,#2,#3,#4,#5,#6,#7,#8\relax#9% + {\ifcase#9\or#1\or#2\or#3\or#4\or#5\or#6\or#7\else\dododoMPplus#8\relax{#9}\fi} + +\def\dododoMPplus#1,#2,#3,#4,#5,#6,#7,#8\relax#9% + {\ifcase#9\or\or\or\or\or\or\or\or#1\or#2\or#3\or#4\or#5\or#6\or#7\fi} + +\def\doMPrest#1,#2,#3,#4,#5,#6,#7,,#8\relax#9% + {#7} + +%D Testing: + +\def\doifpositionelse#1% + {\ifcsname\POSprefix#1\endcsname + \expandafter\firstoftwoarguments + \else + \expandafter\secondoftwoarguments + \fi} + +%D Copying: + +\def\copyposition#1#2% + {\ifcsname\POSprefix#2\endcsname + \global\@EA\let\csname\POSprefix#1\@EA\endcsname\csname\POSprefix#2\endcsname + \fi} + +\protect \endinput |