122 lines
2.8 KiB
C++
122 lines
2.8 KiB
C++
// -*- C++ -*-
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/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
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Written by James Clark (jjc@jclark.com)
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This file is part of groff.
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groff is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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groff is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with groff; see the file COPYING. If not, write to the Free Software
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Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "eqn.h"
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#include "pbox.h"
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class mark_box : public pointer_box {
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public:
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mark_box(box *);
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int compute_metrics(int);
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void output();
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void debug_print();
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};
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// we push down marks so that they don't interfere with spacing
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box *make_mark_box(box *p)
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{
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list_box *b = p->to_list_box();
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if (b != 0) {
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b->list.p[0] = make_mark_box(b->list.p[0]);
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return b;
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}
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else
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return new mark_box(p);
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}
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mark_box::mark_box(box *pp) : pointer_box(pp)
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{
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}
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void mark_box::output()
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{
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p->output();
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}
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int mark_box::compute_metrics(int style)
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{
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int res = p->compute_metrics(style);
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if (res)
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error("multiple marks and lineups");
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printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]\n", uid, p->uid);
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printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]\n", uid, p->uid);
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printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid);
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printf(".nr " MARK_REG " 0\n");
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return FOUND_MARK;
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}
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void mark_box::debug_print()
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{
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fprintf(stderr, "mark { ");
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p->debug_print();
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fprintf(stderr, " }");
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}
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class lineup_box : public pointer_box {
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public:
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lineup_box(box *);
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void output();
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int compute_metrics(int style);
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void debug_print();
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};
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// we push down lineups so that they don't interfere with spacing
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box *make_lineup_box(box *p)
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{
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list_box *b = p->to_list_box();
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if (b != 0) {
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b->list.p[0] = make_lineup_box(b->list.p[0]);
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return b;
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}
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else
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return new lineup_box(p);
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}
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lineup_box::lineup_box(box *pp) : pointer_box(pp)
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{
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}
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void lineup_box::output()
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{
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p->output();
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}
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int lineup_box::compute_metrics(int style)
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{
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int res = p->compute_metrics(style);
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if (res)
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error("multiple marks and lineups");
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printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]\n", uid, p->uid);
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printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]\n", uid, p->uid);
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printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid);
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printf(".nr " MARK_REG " 0\n");
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return FOUND_LINEUP;
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}
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void lineup_box::debug_print()
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{
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fprintf(stderr, "lineup { ");
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p->debug_print();
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fprintf(stderr, " }");
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}
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