home *** CD-ROM | disk | FTP | other *** search
- // -*- C++ -*-
- /* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
- Written by James Clark (jjc@jclark.com)
-
- 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 2, 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 groff; see the file COPYING. If not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "eqn.h"
- #include "pbox.h"
-
- class accent_box : public pointer_box {
- private:
- box *ab;
- public:
- accent_box(box *, box *);
- ~accent_box();
- int compute_metrics(int);
- void output();
- void debug_print();
- void check_tabs(int);
- };
-
- box *make_accent_box(box *p, box *q)
- {
- return new accent_box(p, q);
- }
-
- accent_box::accent_box(box *pp, box *qq) : ab(qq), pointer_box(pp)
- {
- }
-
- accent_box::~accent_box()
- {
- delete ab;
- }
-
- #if 0
- int accent_box::compute_metrics(int style)
- {
- int r = p->compute_metrics(style);
- p->compute_skew();
- ab->compute_metrics(style);
- printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]\n", uid, p->uid);
- printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid);
- printf(".nr " SUP_RAISE_FORMAT " \\n[" HEIGHT_FORMAT "]-%dM>?0\n",
- uid, p->uid, x_height);
- printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]+\\n["
- SUP_RAISE_FORMAT "]\n",
- uid, ab->uid, uid);
- return r;
- }
-
- void accent_box::output()
- {
- printf("\\h'\\n[" WIDTH_FORMAT "]u-\\n[" WIDTH_FORMAT "]u/2u+\\n["
- SKEW_FORMAT "]u'",
- p->uid, ab->uid, p->uid);
- printf("\\v'-\\n[" SUP_RAISE_FORMAT "]u'", uid);
- ab->output();
- printf("\\h'-\\n[" WIDTH_FORMAT "]u'", ab->uid);
- printf("\\v'\\n[" SUP_RAISE_FORMAT "]u'", uid);
- printf("\\h'-(\\n[" WIDTH_FORMAT "]u-\\n[" WIDTH_FORMAT "]u/2u+\\n["
- SKEW_FORMAT "]u)'",
- p->uid, ab->uid, p->uid);
- p->output();
- }
- #endif
-
- /* This version copes with the possibility of an accent's being wider
- than its accentee. LEFT_WIDTH_FORMAT gives the distance from the
- left edge of the resulting box to the middle of the accentee's box.*/
-
- int accent_box::compute_metrics(int style)
- {
- int r = p->compute_metrics(style);
- p->compute_skew();
- ab->compute_metrics(style);
- printf(".nr " LEFT_WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]/2"
- ">?(\\n[" WIDTH_FORMAT "]/2-\\n[" SKEW_FORMAT "])\n",
- uid, p->uid, ab->uid, p->uid);
- printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]/2"
- ">?(\\n[" WIDTH_FORMAT "]/2+\\n[" SKEW_FORMAT "])"
- "+\\n[" LEFT_WIDTH_FORMAT "]\n",
- uid, p->uid, ab->uid, p->uid, uid);
- printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid);
- printf(".nr " SUP_RAISE_FORMAT " \\n[" HEIGHT_FORMAT "]-%dM>?0\n",
- uid, p->uid, x_height);
- printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]+\\n["
- SUP_RAISE_FORMAT "]\n",
- uid, ab->uid, uid);
- if (r)
- printf(".nr " MARK_REG " +\\n[" LEFT_WIDTH_FORMAT "]"
- "-(\\n[" WIDTH_FORMAT "]/2)'\n",
- uid, p->uid);
- return r;
- }
-
- void accent_box::output()
- {
- printf("\\Z" DELIMITER_CHAR);
- printf("\\h'\\n[" LEFT_WIDTH_FORMAT "]u+\\n[" SKEW_FORMAT "]u"
- "-(\\n[" WIDTH_FORMAT "]u/2u)'",
- uid, p->uid, ab->uid);
- printf("\\v'-\\n[" SUP_RAISE_FORMAT "]u'", uid);
- ab->output();
- printf(DELIMITER_CHAR);
- printf("\\Z" DELIMITER_CHAR);
- printf("\\h'\\n[" LEFT_WIDTH_FORMAT "]u-(\\n[" WIDTH_FORMAT "]u/2u)'",
- uid, p->uid);
- p->output();
- printf(DELIMITER_CHAR);
- printf("\\h'\\n[" WIDTH_FORMAT "]u'", uid);
- }
-
- void accent_box::check_tabs(int level)
- {
- ab->check_tabs(level + 1);
- p->check_tabs(level + 1);
- }
-
- void accent_box::debug_print()
- {
- fprintf(stderr, "{ ");
- p->debug_print();
- fprintf(stderr, " } accent { ");
- ab->debug_print();
- fprintf(stderr, " }");
- }
-
- class overline_char_box : public simple_box {
- public:
- overline_char_box();
- void output();
- void debug_print();
- };
-
- overline_char_box::overline_char_box()
- {
- }
-
- void overline_char_box::output()
- {
- printf("\\v'-%dM/2u-%dM'", 7*default_rule_thickness, x_height);
- printf((draw_flag ? "\\D'l%dM 0'" : "\\l'%dM\\&\\(ru'"),
- accent_width);
- printf("\\v'%dM/2u+%dM'", 7*default_rule_thickness, x_height);
- }
-
- void overline_char_box::debug_print()
- {
- fprintf(stderr, "<overline char>");
- }
-
- class overline_box : public pointer_box {
- public:
- overline_box(box *);
- int compute_metrics(int);
- void output();
- void debug_print();
- };
-
- box *make_overline_box(box *p)
- {
- if (p->is_char())
- return new accent_box(p, new overline_char_box);
- else
- return new overline_box(p);
- }
-
- overline_box::overline_box(box *pp) : pointer_box(pp)
- {
- }
-
- int overline_box::compute_metrics(int style)
- {
- int r = p->compute_metrics(cramped_style(style));
- // 9
- printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]+%dM\n",
- uid, p->uid, default_rule_thickness*5);
- printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]\n", uid, p->uid);
- printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid);
- return r;
- }
-
- void overline_box::output()
- {
- // 9
- printf("\\Z" DELIMITER_CHAR);
- printf("\\v'-\\n[" HEIGHT_FORMAT "]u-(%dM/2u)'",
- p->uid, 7*default_rule_thickness);
- if (draw_flag)
- printf("\\D'l\\n[" WIDTH_FORMAT "]u 0'", p->uid);
- else
- printf("\\l'\\n[" WIDTH_FORMAT "]u\\&\\(ru'", p->uid);
- printf(DELIMITER_CHAR);
- p->output();
- }
-
- void overline_box::debug_print()
- {
- fprintf(stderr, "{ ");
- p->debug_print();
- fprintf(stderr, " } bar");
- }
-
- class uaccent_box : public pointer_box {
- box *ab;
- public:
- uaccent_box(box *, box *);
- ~uaccent_box();
- int compute_metrics(int);
- void output();
- void compute_subscript_kern();
- void check_tabs(int);
- void debug_print();
- };
-
- box *make_uaccent_box(box *p, box *q)
- {
- return new uaccent_box(p, q);
- }
-
- uaccent_box::uaccent_box(box *pp, box *qq)
- : pointer_box(pp), ab(qq)
- {
- }
-
- uaccent_box::~uaccent_box()
- {
- delete ab;
- }
-
- int uaccent_box::compute_metrics(int style)
- {
- int r = p->compute_metrics(style);
- ab->compute_metrics(style);
- printf(".nr " LEFT_WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]/2"
- ">?(\\n[" WIDTH_FORMAT "]/2)\n",
- uid, p->uid, ab->uid);
- printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]/2"
- ">?(\\n[" WIDTH_FORMAT "]/2)"
- "+\\n[" LEFT_WIDTH_FORMAT "]\n",
- uid, p->uid, ab->uid, uid);
- printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]\n", uid, p->uid);
- printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]"
- "+\\n[" DEPTH_FORMAT "]\n",
- uid, p->uid, ab->uid);
- if (r)
- printf(".nr " MARK_REG " +\\n[" LEFT_WIDTH_FORMAT "]"
- "-(\\n[" WIDTH_FORMAT "]/2)'\n",
- uid, p->uid);
- return r;
- }
-
- void uaccent_box::output()
- {
- printf("\\Z" DELIMITER_CHAR);
- printf("\\h'\\n[" LEFT_WIDTH_FORMAT "]u-(\\n[" WIDTH_FORMAT "]u/2u)'",
- uid, ab->uid);
- printf("\\v'\\n[" DEPTH_FORMAT "]u'", p->uid);
- ab->output();
- printf(DELIMITER_CHAR);
- printf("\\Z" DELIMITER_CHAR);
- printf("\\h'\\n[" LEFT_WIDTH_FORMAT "]u-(\\n[" WIDTH_FORMAT "]u/2u)'",
- uid, p->uid);
- p->output();
- printf(DELIMITER_CHAR);
- printf("\\h'\\n[" WIDTH_FORMAT "]u'", uid);
- }
-
- void uaccent_box::check_tabs(int level)
- {
- ab->check_tabs(level + 1);
- p->check_tabs(level + 1);
- }
-
- void uaccent_box::compute_subscript_kern()
- {
- box::compute_subscript_kern(); // want 0 subscript kern
- }
-
- void uaccent_box::debug_print()
- {
- fprintf(stderr, "{ ");
- p->debug_print();
- fprintf(stderr, " } uaccent { ");
- ab->debug_print();
- fprintf(stderr, " }");
- }
-
- class underline_char_box : public simple_box {
- public:
- underline_char_box();
- void output();
- void debug_print();
- };
-
- underline_char_box::underline_char_box()
- {
- }
-
- void underline_char_box::output()
- {
- printf("\\v'%dM/2u'", 7*default_rule_thickness);
- printf((draw_flag ? "\\D'l%dM 0'" : "\\l'%dM\\&\\(ru'"),
- accent_width);
- printf("\\v'-%dM/2u'", 7*default_rule_thickness);
- }
-
- void underline_char_box::debug_print()
- {
- fprintf(stderr, "<underline char>");
- }
-
-
- class underline_box : public pointer_box {
- public:
- underline_box(box *);
- int compute_metrics(int);
- void output();
- void compute_subscript_kern();
- void debug_print();
- };
-
- box *make_underline_box(box *p)
- {
- if (p->is_char())
- return new uaccent_box(p, new underline_char_box);
- else
- return new underline_box(p);
- }
-
- underline_box::underline_box(box *pp) : pointer_box(pp)
- {
- }
-
- int underline_box::compute_metrics(int style)
- {
- int r = p->compute_metrics(style);
- // 10
- printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]+%dM\n",
- uid, p->uid, default_rule_thickness*5);
- printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]\n", uid, p->uid);
- printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]\n", uid, p->uid);
- return r;
- }
-
- void underline_box::output()
- {
- // 10
- printf("\\Z" DELIMITER_CHAR);
- printf("\\v'\\n[" DEPTH_FORMAT "]u+(%dM/2u)'",
- p->uid, 7*default_rule_thickness);
- if (draw_flag)
- printf("\\D'l\\n[" WIDTH_FORMAT "]u 0'", p->uid);
- else
- printf("\\l'\\n[" WIDTH_FORMAT "]u\\&\\(ru'", p->uid);
- printf(DELIMITER_CHAR);
- p->output();
- }
-
- // we want an underline box to have 0 subscript kern
-
- void underline_box::compute_subscript_kern()
- {
- box::compute_subscript_kern();
- }
-
- void underline_box::debug_print()
- {
- fprintf(stderr, "{ ");
- p->debug_print();
- fprintf(stderr, " } under");
- }
-
- size_box::size_box(char *s, box *pp) : size(s), pointer_box(pp)
- {
- }
-
- int size_box::compute_metrics(int style)
- {
- printf(".nr " SIZE_FORMAT " \\n[.s]\n", uid);
- printf(".ps %s\n", size);
- printf(".nr " SMALL_SIZE_FORMAT " \\n[.s]\n", uid);
- int r = p->compute_metrics(style);
- printf(".ps \\n[" SIZE_FORMAT "]\n", uid);
- printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]\n", uid, p->uid);
- printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]\n", uid, p->uid);
- printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid);
- return r;
- }
-
- void size_box::output()
- {
- printf("\\s[\\n[" SMALL_SIZE_FORMAT "]]", uid);
- p->output();
- printf("\\s[\\n[" SIZE_FORMAT "]]", uid);
- }
-
- size_box::~size_box()
- {
- a_delete size;
- }
-
- void size_box::debug_print()
- {
- fprintf(stderr, "size %s { ", size);
- p->debug_print();
- fprintf(stderr, " }");
- }
-
-
- font_box::font_box(char *s, box *pp) : pointer_box(pp), f(s)
- {
- }
-
- font_box::~font_box()
- {
- a_delete f;
- }
-
- int font_box::compute_metrics(int style)
- {
- const char *old_roman_font = current_roman_font;
- current_roman_font = f;
- printf(".nr " FONT_FORMAT " \\n[.f]\n", uid);
- printf(".ft %s\n", f);
- int r = p->compute_metrics(style);
- current_roman_font = old_roman_font;
- printf(".ft \\n[" FONT_FORMAT "]\n", uid);
- printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]\n", uid, p->uid);
- printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]\n", uid, p->uid);
- printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid);
- return r;
- }
-
- void font_box::output()
- {
- printf("\\f[%s]", f);
- const char *old_roman_font = current_roman_font;
- current_roman_font = f;
- p->output();
- current_roman_font = old_roman_font;
- printf("\\f[\\n[" FONT_FORMAT "]]", uid);
- }
-
- void font_box::debug_print()
- {
- fprintf(stderr, "font %s { ", f);
- p->debug_print();
- fprintf(stderr, " }");
- }
-
- fat_box::fat_box(box *pp) : pointer_box(pp)
- {
- }
-
- int fat_box::compute_metrics(int style)
- {
- int r = p->compute_metrics(style);
- printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]+%dM\n",
- uid, p->uid, fat_offset);
- printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]\n", uid, p->uid);
- printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid);
- return r;
- }
-
- void fat_box::output()
- {
- p->output();
- printf("\\h'-\\n[" WIDTH_FORMAT "]u'", p->uid);
- printf("\\h'%dM'", fat_offset);
- p->output();
- }
-
-
- void fat_box::debug_print()
- {
- fprintf(stderr, "fat { ");
- p->debug_print();
- fprintf(stderr, " }");
- }
-
-
- vmotion_box::vmotion_box(int i, box *pp) : n(i), pointer_box(pp)
- {
- }
-
- int vmotion_box::compute_metrics(int style)
- {
- int r = p->compute_metrics(style);
- printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]\n", uid, p->uid);
- if (n > 0) {
- printf(".nr " HEIGHT_FORMAT " %dM+\\n[" HEIGHT_FORMAT "]\n",
- uid, n, p->uid);
- printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid);
- }
- else {
- printf(".nr " DEPTH_FORMAT " %dM+\\n[" DEPTH_FORMAT "]>?0\n",
- uid, -n, p->uid);
- printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]\n",
- uid, p->uid);
- }
- return r;
- }
-
- void vmotion_box::output()
- {
- printf("\\v'%dM'", -n);
- p->output();
- printf("\\v'%dM'", n);
- }
-
- void vmotion_box::debug_print()
- {
- if (n >= 0)
- fprintf(stderr, "up %d { ", n);
- else
- fprintf(stderr, "down %d { ", -n);
- p->debug_print();
- fprintf(stderr, " }");
- }
-
- hmotion_box::hmotion_box(int i, box *pp) : n(i), pointer_box(pp)
- {
- }
-
- int hmotion_box::compute_metrics(int style)
- {
- int r = p->compute_metrics(style);
- printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]+%dM\n",
- uid, p->uid, n);
- printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]\n", uid, p->uid);
- printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]\n", uid, p->uid);
- if (r)
- printf(".nr " MARK_REG " +%dM\n", n);
- return r;
- }
-
- void hmotion_box::output()
- {
- printf("\\h'%dM'", n);
- p->output();
- }
-
- void hmotion_box::debug_print()
- {
- if (n >= 0)
- fprintf(stderr, "fwd %d { ", n);
- else
- fprintf(stderr, "back %d { ", -n);
- p->debug_print();
- fprintf(stderr, " }");
- }
-
- vcenter_box::vcenter_box(box *pp) : pointer_box(pp)
- {
- }
-
- int vcenter_box::compute_metrics(int style)
- {
- int r = p->compute_metrics(style);
- printf(".nr " WIDTH_FORMAT " 0\\n[" WIDTH_FORMAT "]\n", uid, p->uid);
- printf(".nr " SUP_RAISE_FORMAT " \\n[" DEPTH_FORMAT "]-\\n["
- HEIGHT_FORMAT "]/2+%dM\n",
- uid, p->uid, p->uid, axis_height);
- printf(".nr " HEIGHT_FORMAT " \\n[" HEIGHT_FORMAT "]+\\n["
- SUP_RAISE_FORMAT "]>?0\n", uid, p->uid, uid);
- printf(".nr " DEPTH_FORMAT " \\n[" DEPTH_FORMAT "]-\\n["
- SUP_RAISE_FORMAT "]>?0\n", uid, p->uid, uid);
-
- return r;
- }
-
- void vcenter_box::output()
- {
- printf("\\v'-\\n[" SUP_RAISE_FORMAT "]u'", uid);
- p->output();
- printf("\\v'\\n[" SUP_RAISE_FORMAT "]u'", uid);
- }
-
- void vcenter_box::debug_print()
- {
- fprintf(stderr, "vcenter { ");
- p->debug_print();
- fprintf(stderr, " }");
- }
-
-