2 /* Copyright (C) 1989, 1990, 1991, 1992, 2002 Free Software Foundation, Inc.
3 Written by James Clark (jjc@jclark.com)
5 This file is part of groff.
7 groff is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 groff is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License along
18 with groff; see the file COPYING. If not, write to the Free Software
19 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 class limit_box : public box {
30 limit_box(box *, box *, box *);
32 int compute_metrics(int);
38 box *make_limit_box(box *pp, box *qq, box *rr)
40 return new limit_box(pp, qq, rr);
43 limit_box::limit_box(box *pp, box *qq, box *rr)
44 : p(pp), from(qq), to(rr)
46 spacing_type = p->spacing_type;
49 limit_box::~limit_box()
56 int limit_box::compute_metrics(int style)
58 printf(".nr " SIZE_FORMAT " \\n[.ps]\n", uid);
59 if (!(style <= SCRIPT_STYLE && one_size_reduction_flag))
61 printf(".nr " SMALL_SIZE_FORMAT " \\n[.ps]\n", uid);
65 res = from->compute_metrics(cramped_style(script_style(style)));
70 int r = to->compute_metrics(script_style(style));
72 error("multiple marks and lineups");
78 printf(".ps \\n[" SIZE_FORMAT "]u\n", uid);
79 int r = p->compute_metrics(style);
80 p->compute_subscript_kern();
82 error("multiple marks and lineups");
87 printf(".nr " LEFT_WIDTH_FORMAT " "
88 "0\\n[" WIDTH_FORMAT "]",
91 printf(">?(\\n[" SUB_KERN_FORMAT "]+\\n[" WIDTH_FORMAT "])",
94 printf(">?(-\\n[" SUB_KERN_FORMAT "]+\\n[" WIDTH_FORMAT "])",
97 printf(".nr " WIDTH_FORMAT " "
98 "0\\n[" WIDTH_FORMAT "]",
101 printf(">?(-\\n[" SUB_KERN_FORMAT "]+\\n[" WIDTH_FORMAT "])",
104 printf(">?(\\n[" SUB_KERN_FORMAT "]+\\n[" WIDTH_FORMAT "])",
106 printf("/2+\\n[" LEFT_WIDTH_FORMAT "]\n", uid);
107 printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]", uid, p->uid);
109 printf(">?\\n[" WIDTH_FORMAT "]", to->uid);
111 printf(">?\\n[" WIDTH_FORMAT "]", from->uid);
114 printf(".nr " MARK_REG " +(\\n[" LEFT_WIDTH_FORMAT "]"
115 "-(\\n[" WIDTH_FORMAT "]/2))\n",
118 printf(".nr " SUP_RAISE_FORMAT " %dM+\\n[" DEPTH_FORMAT
119 "]>?%dM+\\n[" HEIGHT_FORMAT "]\n",
120 uid, big_op_spacing1, to->uid, big_op_spacing3, p->uid);
121 printf(".nr " HEIGHT_FORMAT " \\n[" SUP_RAISE_FORMAT "]+\\n["
122 HEIGHT_FORMAT "]+%dM\n",
123 uid, uid, to->uid, big_op_spacing5);
126 printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]\n", uid, p->uid);
128 printf(".nr " SUB_LOWER_FORMAT " %dM+\\n[" HEIGHT_FORMAT
129 "]>?%dM+\\n[" DEPTH_FORMAT "]\n",
130 uid, big_op_spacing2, from->uid, big_op_spacing4, p->uid);
131 printf(".nr " DEPTH_FORMAT " \\n[" SUB_LOWER_FORMAT "]+\\n["
132 DEPTH_FORMAT "]+%dM\n",
133 uid, uid, from->uid, big_op_spacing5);
136 printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid);
140 void limit_box::output()
142 printf("\\s[\\n[" SMALL_SIZE_FORMAT "]u]", uid);
144 printf("\\Z" DELIMITER_CHAR);
145 printf("\\v'-\\n[" SUP_RAISE_FORMAT "]u'", uid);
146 printf("\\h'\\n[" LEFT_WIDTH_FORMAT "]u"
147 "+(-\\n[" WIDTH_FORMAT "]u+\\n[" SUB_KERN_FORMAT "]u/2u)'",
148 uid, to->uid, p->uid);
150 printf(DELIMITER_CHAR);
153 printf("\\Z" DELIMITER_CHAR);
154 printf("\\v'\\n[" SUB_LOWER_FORMAT "]u'", uid);
155 printf("\\h'\\n[" LEFT_WIDTH_FORMAT "]u"
156 "+(-\\n[" SUB_KERN_FORMAT "]u-\\n[" WIDTH_FORMAT "]u/2u)'",
157 uid, p->uid, from->uid);
159 printf(DELIMITER_CHAR);
161 printf("\\s[\\n[" SIZE_FORMAT "]u]", uid);
162 printf("\\Z" DELIMITER_CHAR);
163 printf("\\h'\\n[" LEFT_WIDTH_FORMAT "]u"
164 "-(\\n[" WIDTH_FORMAT "]u/2u)'",
167 printf(DELIMITER_CHAR);
168 printf("\\h'\\n[" WIDTH_FORMAT "]u'", uid);
171 void limit_box::debug_print()
173 fprintf(stderr, "{ ");
175 fprintf(stderr, " }");
177 fprintf(stderr, " from { ");
179 fprintf(stderr, " }");
182 fprintf(stderr, " to { ");
184 fprintf(stderr, " }");
188 void limit_box::check_tabs(int level)
191 to->check_tabs(level + 1);
193 from->check_tabs(level + 1);
194 p->check_tabs(level + 1);