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path: root/metapost/context/base/mpiv/mp-bare.mpiv
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%D \module
%D   [       file=mp-bare.mpiv,
%D        version=2014.10.31,
%D          title=\CONTEXT\ \METAPOST\ graphics,
%D       subtitle=plain plugins,
%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 licen-en.pdf for
%C details.

if known context_bare : endinput ; fi ;
boolean context_bare  ; context_bare := true ;

boolean mfun_use_one_pass ; mfun_use_one_pass := runscript("mp.print(metapost.use_one_pass)") ;

vardef colordecimals primary c =
    if cmykcolor c  :
        decimal cyanpart c & ":" & decimal magentapart c & ":" & decimal yellowpart c & ":" & decimal blackpart c
    elseif rgbcolor c :
        decimal redpart c & ":" & decimal greenpart c & ":" & decimal bluepart c
    else :
        decimal c
    fi
enddef ;

if mfun_use_one_pass :

    rgbcolor mfun_tt_r ;
    numeric mfun_tt_n ; mfun_tt_n := 0 ;
    picture mfun_tt_o ; mfun_tt_o := nullpicture ;
    picture mfun_tt_c ; mfun_tt_c := nullpicture ;

    def mfun_reset_tex_texts =
        mfun_tt_n := 0 ;
        mfun_tt_o := nullpicture ; % redundant
        mfun_tt_c := nullpicture ; % redundant
    enddef ;

    def mfun_flush_tex_texts =
    enddef ;

    vardef rawtextext(expr s) =
        if s = "" :
            nullpicture
        else :
            mfun_tt_n := mfun_tt_n + 1 ;
            mfun_tt_c := nullpicture ;
            mfun_tt_o := nullpicture ;
            addto mfun_tt_o doublepath origin _op_ ; % save drawoptions
            mfun_tt_r := runscript("mp.SomeText(" & decimal mfun_tt_n & "," & ditto & s & ditto & ")") ;
            addto mfun_tt_c doublepath unitsquare
                xscaled redpart mfun_tt_r
                yscaled (greenpart mfun_tt_r + bluepart mfun_tt_r)
                shifted (0,-bluepart mfun_tt_r)
                withprescript "mf_object=text"
                withprescript "tx_index=" & decimal mfun_tt_n
                withprescript "tx_color=" & colordecimals colorpart mfun_tt_o
            ;
            mfun_tt_c
        fi
    enddef ;

    vardef rawmadetext =
        mfun_tt_n := mfun_tt_n + 1 ;
        mfun_tt_c := nullpicture ;
        mfun_tt_o := nullpicture ;
        addto mfun_tt_o doublepath origin _op_ ; % save drawoptions
        mfun_tt_r := runscript("mp.MadeText(" & decimal mfun_tt_n & ")") ;
        addto mfun_tt_c doublepath unitsquare
            xscaled redpart mfun_tt_r
            yscaled (greenpart mfun_tt_r + bluepart mfun_tt_r)
            shifted (0,-bluepart mfun_tt_r)
            withprescript "mf_object=text"
            withprescript "tx_index=" & decimal mfun_tt_n
            withprescript "tx_color=" & colordecimals colorpart mfun_tt_o
        ;
        mfun_tt_c
    enddef ;

else :

    numeric mfun_tt_w[], mfun_tt_h[], mfun_tt_d[] ;
    numeric mfun_tt_n ; mfun_tt_n := 0 ;
    picture mfun_tt_p ; mfun_tt_p := nullpicture ;
    picture mfun_tt_o ; mfun_tt_o := nullpicture ;
    picture mfun_tt_c ; mfun_tt_c := nullpicture ;

    if unknown mfun_trial_run :
        boolean mfun_trial_run ;
        mfun_trial_run := false ;
    fi ;

    if unknown mfun_first_run :
        boolean mfun_first_run ;
        mfun_first_run := true ;
    fi ;

    def mfun_reset_tex_texts =
        mfun_tt_n := 0 ;
        mfun_tt_p := nullpicture ;
        mfun_tt_o := nullpicture ; % redundant
        mfun_tt_c := nullpicture ; % redundant
    enddef ;

    def mfun_flush_tex_texts =
        addto currentpicture also mfun_tt_p
    enddef ;

    vardef rawtextext(expr str) = % todo: avoid currentpicture
        if str = "" :
            nullpicture
        else :
            mfun_tt_n := mfun_tt_n + 1 ;
            mfun_tt_c := nullpicture ;
            if mfun_trial_run :
                mfun_tt_o := nullpicture ;
                addto mfun_tt_o doublepath origin _op_ ; % save drawoptions
                addto mfun_tt_c doublepath unitsquare
                    withprescript "tx_number=" & decimal mfun_tt_n
                    withprescript "tx_stage=trial"
                    withprescript "tx_color=" & colordecimals colorpart mfun_tt_o
                    withpostscript str ;
                addto mfun_tt_p also mfun_tt_c ;
            elseif known mfun_tt_d[mfun_tt_n] :
                addto mfun_tt_c doublepath unitsquare
                    xscaled mfun_tt_w[mfun_tt_n]
                    yscaled (mfun_tt_h[mfun_tt_n] + mfun_tt_d[mfun_tt_n])
                    shifted (0,-mfun_tt_d[mfun_tt_n])
                    withprescript "tx_number=" & decimal mfun_tt_n
                    withprescript "tx_stage=final" ;
            else :
                addto mfun_tt_c doublepath unitsquare ; % unitpicture
            fi ;
            mfun_tt_c
        fi
    enddef ;

fi ;

extra_beginfig := extra_beginfig & "mfun_reset_tex_texts ;" ;
extra_endfig   := "mfun_flush_tex_texts ; mfun_reset_tex_texts ; " & extra_endfig ;

primarydef str infont name = % nasty hack
    if name = "" :
        rawtextext(str)
    else :
        rawtextext("\definedfont[" & name & "]" & str)
    fi
enddef ;