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.ig
sboxes.tmac
Copyright (C) 2021 Free Software Foundation, Inc.
Written by Deri James (deri@chuzzlewit.myzen.co.uk)
This file is part of groff.
groff is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your
option) any later version.
groff is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
..
.if !\n(.g \
. ab groff sboxes macros require groff extensions; aborting
.
.if \n(.C \
. ab groff sboxes macros do not work in compatibility mode; aborting
.
.\" See if already loaded.
.if r GSBOX .nx
.nr GSBOX 1
.nr bx@stack 0
.
.de sboxes*error
. tm sboxes.tmac:\\n[.F]:\\n[.c]: error: \\$*
..
.
.de pdfbackground
.device pdf: background \\$*
..
.\" Link into ms macros to trap footnote growth
.am fn@print-sep
.nr bx@pb \\n[nl]u-2p
.nop \!x X pdf: background footnote \\n[bx@pb]z
.rr bx@pb
..
.\" Has PD been actioned?
.am par*start
.nr bx@PD \\n[PD]
..
.
.de BoxStart
. fl
. nr bx@stack \\n[bx@stack]+1u
. nr bx@shad 0
. nr bx@outl 0
. nr bx@ind 1P
. ds bx@wt 0
. ds bx@type "\"
. while \\n[.$] \{\
. ie 'SHADED'\\$1' \{\
. nop \\M[\\$2]\c
. nr bx@shad 1
. as bx@type "fill\"
. shift 2
. \}
. el \{\
. ie 'OUTLINED'\\$1' \{\
. nop \\m[\\$2]\c
. nr bx@outl 1
. as bx@type "box\"
. shift 2
. \}
. el \{\
. ie 'WEIGHT'\\$1' \{\
. ds bx@wt \\$2
. shift 2
. \}
. el \{\
. ie 'INDENT'\\$1' \{\
. nr bx@ind \\$2
. shift 2
. \}
. el \{\
. sboxes*error ignoring unrecognized BoxStart parameter '\\$1'
. shift
. \}
. \}
. \}
. \}
. \}
.
. if '\\*[bx@type]'' .ds bx@type "fill"
. nr bx@l \\n[\\n[.ev]:li]s+\\n[.o]s-\\n[bx@ind]u
. nr bx@r \\n[bx@l]u+\\n[.l]-\\n[\\n[.ev]:li]+(\\n[bx@ind]u*2u)
. nr bx@gap \\n[.v]-\\n[.ps]+\\*[bx@wt]
. nr bx@bot \\n[.p]u-\\n[FM]u+\\n[bx@ind]u+\\n[.ps]u
. nr bx@top \\n[HM]-\\n[bx@ind]u+\\n[bx@gap]u
. ne \\n[bx@ind]u+2v+\\*[bx@wt]
. sp -(2v-(\\n[bx@PD]u*2u))u
. pdfbackground \\*[bx@type] \\n[bx@l]z \\n[bx@top]z \\n[bx@r]z \\n[bx@bot]z \\*[bx@wt] \\n[nl]z
. sp (\\n[bx@ind]u-1v)u
. if (\\n[bx@shad]=1) .nop \\M[]\c
. if (\\n[bx@outl]=1) .nop \\m[]\c
. ds bx@ind\\n[bx@stack] \\n[bx@ind]
. rr bx@shad bx@outl bx@ind bx@bot bx@top bx@l bx@r
. rm wt type
. sp -(\\n[bx@gap]u)
. nr bx@PD 0
..
.de BoxStop
. sp \\*[bx@ind\\n[bx@stack]]u-\\n[.psr]u
. pdfbackground off
. nr bx@stack \\n[bx@stack]-1u
..
.\" Local Variables:
.\" mode: nroff
.\" fill-column: 72
.\" End:
.\" vim: set expandtab filetype=groff textwidth=72:
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